./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2562551451 <...> unlink("./520/binderfs" [pid 5049] close(3 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1016, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] newfstatat(AT_FDCWD, "./504/blkio.bfq.io_wait_time_recursive", [pid 11193] set_robust_list(0x555556ac56a0, 24 [pid 11192] chdir("./520" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 990 [pid 11193] <... set_robust_list resumed>) = 0 [pid 11192] <... chdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11193] chdir("./494" [pid 11192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] unlink("./504/blkio.bfq.io_wait_time_recursive" [pid 11193] <... chdir resumed>) = 0 [pid 11192] <... prctl resumed>) = 0 [pid 11193] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11192] setpgid(0, 0 [pid 5046] <... unlink resumed>) = 0 [pid 11193] <... prctl resumed>) = 0 [pid 11192] <... setpgid resumed>) = 0 [pid 5049] rmdir("./509" [pid 11193] setpgid(0, 0 [pid 11192] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11193] <... setpgid resumed>) = 0 [pid 11193] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11192] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11193] <... symlink resumed>) = 0 [pid 11192] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./507", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./504/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./507", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./504/cgroup.net", [pid 11193] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11192] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./520/cgroup", [pid 5049] mkdir("./510", 0777 [pid 5047] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11193] <... symlink resumed>) = 0 [pid 11192] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5046] unlink("./504/cgroup.net" [pid 11193] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11192] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11193] <... openat resumed>) = 3 [pid 11192] <... openat resumed>) = 3 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5051] unlink("./520/cgroup" [pid 5046] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11193] write(3, "1000", 4) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 11193] close(3 [pid 11192] write(3, "1000", 4 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11193] <... close resumed>) = 0 [pid 11192] <... write resumed>) = 4 [pid 5047] getdents64(3, [pid 5046] close(3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11193] symlink("/dev/binderfs", "./binderfs" [pid 11192] close(3 [pid 11193] <... symlink resumed>) = 0 [pid 11192] <... close resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... close resumed>) = 0 [pid 11192] symlink("/dev/binderfs", "./binderfs" [pid 11193] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11192] <... symlink resumed>) = 0 [pid 5051] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./504" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11193] <... futex resumed>) = 0 [pid 11193] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11192] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11193] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11192] <... futex resumed>) = 0 [pid 11193] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11192] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... rmdir resumed>) = 0 [pid 11193] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11192] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11193] <... mmap resumed>) = 0x7f504ff5f000 [pid 11192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11193] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", [pid 5047] umount2("./507/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./505", 0777./strace-static-x86_64: Process 11194 attached [pid 11193] <... mprotect resumed>) = 0 [pid 11192] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11194] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... mkdir resumed>) = 0 [pid 11193] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11192] <... mprotect resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./507/cgroup.cpu", [pid 11194] <... set_robust_list resumed>) = 0 [pid 11193] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11192] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11194] chdir("./510" [pid 11193] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11194] <... chdir resumed>) = 0 [pid 11192] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 11195 attached [pid 11194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11193] <... clone3 resumed> => {parent_tid=[991]}, 88) = 991 [pid 11192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11195] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11194] <... prctl resumed>) = 0 [pid 11193] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./520/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./507/cgroup.cpu" [pid 11195] <... rseq resumed>) = 0 [pid 11194] setpgid(0, 0 [pid 11193] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11197 attached [pid 11195] set_robust_list(0x7f504ff7f9a0, 24 [pid 11194] <... setpgid resumed>) = 0 [pid 11193] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11192] <... clone3 resumed> => {parent_tid=[1044]}, 88) = 1044 [pid 11197] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11195] <... set_robust_list resumed>) = 0 [pid 11194] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11193] <... futex resumed>) = 0 [pid 11197] <... rseq resumed>) = 0 [pid 11195] rt_sigprocmask(SIG_SETMASK, [], [pid 11192] rt_sigprocmask(SIG_SETMASK, [], [pid 11197] set_robust_list(0x7f504ff7f9a0, 24 [pid 11195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11193] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11197] <... set_robust_list resumed>) = 0 [pid 11195] open(".", O_RDONLY [pid 11192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11197] rt_sigprocmask(SIG_SETMASK, [], [pid 11195] <... open resumed>) = 3 [pid 11194] <... symlink resumed>) = 0 [pid 11192] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11196 attached [pid 11197] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1022 [pid 5047] umount2("./507/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1012 [pid 11197] open(".", O_RDONLY [pid 11196] set_robust_list(0x555556ac56a0, 24 [pid 11195] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11192] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11197] <... open resumed>) = 3 [pid 11196] <... set_robust_list resumed>) = 0 [pid 11195] <... futex resumed>) = 1 [pid 11194] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11193] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./520/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11197] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11196] chdir("./505" [pid 11195] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11194] <... symlink resumed>) = 0 [pid 11193] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./507/binderfs", [pid 11197] <... futex resumed>) = 1 [pid 11196] <... chdir resumed>) = 0 [pid 11195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11194] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11193] <... futex resumed>) = 0 [pid 11192] <... futex resumed>) = 0 [pid 11197] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11195] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11194] <... symlink resumed>) = 0 [pid 11193] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./520/cgroup.net" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11197] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11196] <... prctl resumed>) = 0 [pid 11195] <... fcntl resumed>) = 0 [pid 11192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./507/binderfs" [pid 11197] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11196] setpgid(0, 0 [pid 11195] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11192] <... futex resumed>) = 0 [pid 11197] <... fcntl resumed>) = 0 [pid 11196] <... setpgid resumed>) = 0 [pid 11195] <... futex resumed>) = 1 [pid 11193] <... futex resumed>) = 0 [pid 11192] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 11197] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11195] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11193] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11197] <... futex resumed>) = 0 [pid 11196] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11194] <... openat resumed>) = 3 [pid 11193] <... futex resumed>) = 0 [pid 11192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11197] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11195] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11196] <... symlink resumed>) = 0 [pid 11195] <... openat resumed>) = 4 [pid 11194] write(3, "1000", 4 [pid 11193] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11192] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 11197] <... openat resumed>) = 4 [pid 11196] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11195] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11194] <... write resumed>) = 4 [pid 11192] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./507/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11193] <... futex resumed>) = ? [pid 11197] +++ killed by SIGIO +++ [pid 11196] <... symlink resumed>) = 0 [pid 11195] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11196] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11194] close(3 [pid 5051] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./507/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] rmdir("./520" [pid 5047] unlink("./507/cgroup" [pid 11192] +++ killed by SIGIO +++ [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1043, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11194] <... close resumed>) = 0 [pid 11196] <... symlink resumed>) = 0 [pid 5047] umount2("./507/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11194] symlink("/dev/binderfs", "./binderfs" [pid 5050] umount2("./520", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] newfstatat(AT_FDCWD, "./507/blkio.bfq.io_wait_time_recursive", [pid 11193] +++ killed by SIGIO +++ [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] mkdir("./521", 0777 [pid 5050] <... openat resumed>) = 3 [pid 5051] <... mkdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11194] <... symlink resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5047] unlink("./507/blkio.bfq.io_wait_time_recursive" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=990, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 11198 attached [pid 11196] <... openat resumed>) = 3 [pid 11194] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11198] set_robust_list(0x555556ac56a0, 24 [pid 11194] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1044 [pid 5047] <... unlink resumed>) = 0 [pid 11198] <... set_robust_list resumed>) = 0 [pid 11196] write(3, "1000", 4 [pid 11194] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, [pid 5047] umount2("./507/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11198] chdir("./521" [pid 11196] <... write resumed>) = 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11198] <... chdir resumed>) = 0 [pid 11196] close(3 [pid 11194] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./520/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./507/cgroup.net", [pid 11198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11196] <... close resumed>) = 0 [pid 11194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11198] <... prctl resumed>) = 0 [pid 11196] symlink("/dev/binderfs", "./binderfs" [pid 11194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./494", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11198] setpgid(0, 0 [pid 11194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./520/cgroup.cpu", [pid 11198] <... setpgid resumed>) = 0 [pid 11196] <... symlink resumed>) = 0 [pid 11194] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./507/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11198] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11196] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11194] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./520/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./494", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11196] <... futex resumed>) = 0 [pid 11194] <... mprotect resumed>) = 0 [pid 11198] <... symlink resumed>) = 0 [pid 11196] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] <... openat resumed>) = 3 [pid 11198] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11196] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] newfstatat(3, "", [pid 11196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] umount2("./520/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11196] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11194] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11198] <... symlink resumed>) = 0 [pid 11198] symlink("/syzcgroup/net/syz5", "./cgroup.net") = 0 [pid 11196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11194] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 5045] getdents64(3, [pid 11198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... close resumed>) = 0 [pid 5045] umount2("./494/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11196] <... mmap resumed>) = 0x7f504ff5f000 [pid 11194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./520/binderfs", [pid 5047] rmdir("./507" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11198] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./520/binderfs" [pid 11196] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] newfstatat(AT_FDCWD, "./494/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11198] write(3, "1000", 4) = 4 [pid 11198] close(3 [pid 5047] <... rmdir resumed>) = 0 [pid 11198] <... close resumed>) = 0 [pid 11198] symlink("/dev/binderfs", "./binderfs" [pid 11196] <... mprotect resumed>) = 0 [pid 11198] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] unlink("./494/cgroup.cpu"./strace-static-x86_64: Process 11199 attached [pid 11199] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11196] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11199] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11198] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11198] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./508", 0777 [pid 11199] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11198] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11196] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11194] <... clone3 resumed> => {parent_tid=[1023]}, 88) = 1023 [pid 5050] newfstatat(AT_FDCWD, "./520/cgroup", [pid 5045] umount2("./494/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11198] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11198] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11200 attached [pid 11200] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11198] <... clone3 resumed> => {parent_tid=[1045]}, 88) = 1045 [pid 11200] <... rseq resumed>) = 0 [pid 11198] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... mkdir resumed>) = 0 [pid 11200] set_robust_list(0x7f504ff7f9a0, 24 [pid 11198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11194] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./494/binderfs", [pid 11200] <... set_robust_list resumed>) = 0 [pid 11198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11200] rt_sigprocmask(SIG_SETMASK, [], [pid 11198] <... futex resumed>) = 0 [pid 11194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./520/cgroup"./strace-static-x86_64: Process 11201 attached [pid 11200] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11194] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] unlink("./494/binderfs" [pid 11201] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11200] open(".", O_RDONLY [pid 11199] <... futex resumed>) = 0 [pid 11196] <... clone3 resumed> => {parent_tid=[1013]}, 88) = 1013 [pid 11194] <... futex resumed>) = 1 [pid 11201] <... rseq resumed>) = 0 [pid 11201] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11200] <... open resumed>) = 3 [pid 11199] open(".", O_RDONLY [pid 11196] rt_sigprocmask(SIG_SETMASK, [], [pid 11194] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11201] rt_sigprocmask(SIG_SETMASK, [], [pid 11200] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11199] <... open resumed>) = 3 [pid 11196] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11201] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11200] <... futex resumed>) = 1 [pid 11199] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11198] <... futex resumed>) = 0 [pid 11196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./494/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11202 attached [pid 11201] open(".", O_RDONLY [pid 11200] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11199] <... futex resumed>) = 1 [pid 11198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11194] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11202] set_robust_list(0x555556ac56a0, 24 [pid 11201] <... open resumed>) = 3 [pid 11200] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11199] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11198] <... futex resumed>) = 0 [pid 11196] <... futex resumed>) = 0 [pid 11194] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1018 [pid 11202] <... set_robust_list resumed>) = 0 [pid 11201] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11200] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11194] <... futex resumed>) = 0 [pid 5050] unlink("./520/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./494/cgroup", [pid 11202] chdir("./508" [pid 11201] <... futex resumed>) = 0 [pid 11200] <... fcntl resumed>) = 0 [pid 11199] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11194] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11201] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11200] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11199] <... fcntl resumed>) = 0 [pid 11196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11202] <... chdir resumed>) = 0 [pid 11202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] unlink("./494/cgroup" [pid 11202] <... prctl resumed>) = 0 [pid 11201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11200] <... futex resumed>) = 1 [pid 11199] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11198] <... futex resumed>) = 0 [pid 11196] <... futex resumed>) = 0 [pid 5050] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11201] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11200] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11199] <... futex resumed>) = 1 [pid 11198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11194] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11202] setpgid(0, 0 [pid 11201] <... fcntl resumed>) = 0 [pid 11200] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11199] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11198] <... futex resumed>) = 0 [pid 11194] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./520/cgroup.net", [pid 11201] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11200] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11194] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11202] <... setpgid resumed>) = 0 [pid 11201] <... futex resumed>) = 1 [pid 11199] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11198] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11196] <... futex resumed>) = 0 [pid 11194] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./520/cgroup.net" [pid 5045] umount2("./494/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11202] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11201] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11200] <... openat resumed>) = 4 [pid 11199] <... openat resumed>) = 4 [pid 11198] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11194] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11199] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11196] <... futex resumed>) = 0 [pid 11194] restart_syscall(<... resuming interrupted futex ...> [pid 5045] newfstatat(AT_FDCWD, "./494/blkio.bfq.io_wait_time_recursive", [pid 11202] <... symlink resumed>) = 0 [pid 11201] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11200] +++ killed by SIGIO +++ [pid 11196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11194] <... restart_syscall resumed>) = ? [pid 5050] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11201] <... openat resumed>) = 4 [pid 11198] +++ killed by SIGIO +++ [pid 11202] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11199] +++ killed by SIGIO +++ [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./494/blkio.bfq.io_wait_time_recursive" [pid 5050] close(3 [pid 11202] <... symlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 11201] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] rmdir("./520" [pid 11202] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11196] <... futex resumed>) = ? [pid 5050] <... rmdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11202] <... symlink resumed>) = 0 [pid 11201] +++ killed by SIGIO +++ [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1044, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] umount2("./494/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] mkdir("./521", 0777 [pid 11202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./494/cgroup.net", [pid 5050] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11202] <... openat resumed>) = 3 [pid 5045] unlink("./494/cgroup.net" [pid 11202] write(3, "1000", 4 [pid 11194] +++ killed by SIGIO +++ [pid 5051] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 11202] <... write resumed>) = 4 [pid 11196] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11203 attached ) = 3 [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1022, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 11202] close(3 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1012, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] getdents64(3, [pid 11203] set_robust_list(0x555556ac56a0, 24 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 5045] close(3 [pid 11202] <... close resumed>) = 0 [pid 11203] <... set_robust_list resumed>) = 0 [pid 11202] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./510", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11203] chdir("./521" [pid 5051] unlink("./521/cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11202] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./510", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] rmdir("./494" [pid 11203] <... chdir resumed>) = 0 [pid 11202] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... openat resumed>) = 3 [pid 5051] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11203] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11202] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./521/binderfs", [pid 5049] getdents64(3, [pid 5046] umount2("./505", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 11203] <... prctl resumed>) = 0 [pid 11202] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1045 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11202] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] unlink("./521/binderfs" [pid 5049] umount2("./510/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11203] setpgid(0, 0 [pid 11202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./505", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] mkdir("./495", 0777 [pid 11203] <... setpgid resumed>) = 0 [pid 11202] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./510/cgroup.cpu", [pid 5046] <... openat resumed>) = 3 [pid 5045] <... mkdir resumed>) = 0 [pid 11203] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(3, "", [pid 5051] newfstatat(AT_FDCWD, "./521/cgroup", [pid 5049] unlink("./510/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11203] <... symlink resumed>) = 0 [pid 11202] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11203] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11202] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] getdents64(3, ./strace-static-x86_64: Process 11204 attached [pid 11203] <... symlink resumed>) = 0 [pid 11202] <... mprotect resumed>) = 0 [pid 5051] unlink("./521/cgroup" [pid 5049] umount2("./510/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11203] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11202] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11204] set_robust_list(0x555556ac56a0, 24 [pid 5051] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./505/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 992 [pid 11204] <... set_robust_list resumed>) = 0 [pid 11202] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./510/binderfs", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11204] chdir("./495" [pid 5049] unlink("./510/binderfs") = 0 [pid 11202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] newfstatat(AT_FDCWD, "./505/cgroup.cpu", ./strace-static-x86_64: Process 11205 attached [pid 11204] <... chdir resumed>) = 0 [pid 11203] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./510/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11205] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11204] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11202] <... clone3 resumed> => {parent_tid=[1019]}, 88) = 1019 [pid 5051] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./505/cgroup.cpu" [pid 11205] <... rseq resumed>) = 0 [pid 11204] <... prctl resumed>) = 0 [pid 11202] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11205] set_robust_list(0x7f504ff7f9a0, 24 [pid 11204] setpgid(0, 0 [pid 11203] <... openat resumed>) = 3 [pid 11202] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 5049] newfstatat(AT_FDCWD, "./510/cgroup", [pid 5046] <... unlink resumed>) = 0 [pid 11205] <... set_robust_list resumed>) = 0 [pid 11204] <... setpgid resumed>) = 0 [pid 11203] write(3, "1000", 4 [pid 11202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./505/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11205] rt_sigprocmask(SIG_SETMASK, [], [pid 11204] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11203] <... write resumed>) = 4 [pid 11202] <... futex resumed>) = 0 [pid 5051] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11205] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11203] close(3 [pid 11202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11204] <... symlink resumed>) = 0 [pid 11203] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./510/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./505/binderfs", [pid 11205] open(".", O_RDONLY [pid 11204] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11203] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./521/cgroup.net", [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11203] <... symlink resumed>) = 0 [pid 5046] unlink("./505/binderfs" [pid 11205] <... open resumed>) = 3 [pid 11204] <... symlink resumed>) = 0 [pid 11203] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./510/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11205] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11204] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11203] <... futex resumed>) = 0 [pid 5051] unlink("./521/cgroup.net" [pid 11205] <... futex resumed>) = 1 [pid 11202] <... futex resumed>) = 0 [pid 11203] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11205] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11204] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./505/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11205] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11203] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./510/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11205] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./505/cgroup", [pid 11205] <... fcntl resumed>) = 0 [pid 11203] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11202] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] unlink("./510/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11205] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11203] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11203] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] close(3 [pid 5046] unlink("./505/cgroup" [pid 11205] <... futex resumed>) = 0 [pid 11203] <... mmap resumed>) = 0x7f504ff5f000 [pid 11202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11205] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11203] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./510/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11205] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11203] <... mprotect resumed>) = 0 [pid 11202] <... futex resumed>) = 0 [pid 5051] rmdir("./521" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./505/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11205] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./510/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./505/blkio.bfq.io_wait_time_recursive", [pid 5049] unlink("./510/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./505/blkio.bfq.io_wait_time_recursive") = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 11204] <... openat resumed>) = 3 [pid 5049] <... close resumed>) = 0 [pid 11205] <... openat resumed>) = 4 [pid 11203] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11202] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] mkdir("./522", 0777 [pid 5046] umount2("./505/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11205] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11204] write(3, "1000", 4 [pid 11203] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11202] restart_syscall(<... resuming interrupted futex ...> [pid 5049] rmdir("./510" [pid 11204] <... write resumed>) = 4 [pid 11203] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11202] <... restart_syscall resumed>) = ? [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11204] close(3 [pid 5049] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11206 attached [pid 11206] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5049] mkdir("./511", 0777 [pid 11206] <... rseq resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11206] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11206] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11206] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11207 attached [pid 11204] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./505/cgroup.net", [pid 11207] set_robust_list(0x555556ac56a0, 24 [pid 11205] +++ killed by SIGIO +++ [pid 11207] <... set_robust_list resumed>) = 0 [pid 11204] symlink("/dev/binderfs", "./binderfs" [pid 11203] <... clone3 resumed> => {parent_tid=[1046]}, 88) = 1046 [pid 11207] chdir("./522" [pid 11203] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11204] <... symlink resumed>) = 0 [pid 11203] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11207] <... chdir resumed>) = 0 [pid 11204] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11203] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./505/cgroup.net" [pid 11207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 11208 attached [pid 5046] <... unlink resumed>) = 0 [pid 11207] setpgid(0, 0 [pid 11206] <... futex resumed>) = 0 [pid 11203] <... futex resumed>) = 1 [pid 11208] set_robust_list(0x555556ac56a0, 24 [pid 11206] open(".", O_RDONLY [pid 11203] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11204] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1024 [pid 5046] getdents64(3, [pid 11208] <... set_robust_list resumed>) = 0 [pid 11207] <... setpgid resumed>) = 0 [pid 11206] <... open resumed>) = 3 [pid 11204] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11207] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11206] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11204] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11202] +++ killed by SIGIO +++ [pid 11208] chdir("./511" [pid 11204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1046 [pid 5046] close(3 [pid 11204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1018, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11208] <... chdir resumed>) = 0 [pid 11207] <... symlink resumed>) = 0 [pid 11206] <... futex resumed>) = 1 [pid 11204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11203] <... futex resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... close resumed>) = 0 [pid 11208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11204] <... mmap resumed>) = 0x7f504ff5f000 [pid 11206] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11204] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11203] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] rmdir("./505" [pid 11208] <... prctl resumed>) = 0 [pid 11206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11203] <... futex resumed>) = 0 [pid 11208] setpgid(0, 0 [pid 11207] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11206] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11203] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11208] <... setpgid resumed>) = 0 [pid 11207] <... symlink resumed>) = 0 [pid 11206] <... fcntl resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5047] umount2("./508", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11206] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11206] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11203] <... futex resumed>) = 0 [pid 11207] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11203] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] openat(AT_FDCWD, "./508", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11208] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11207] <... symlink resumed>) = 0 [pid 11206] <... futex resumed>) = 0 [pid 11204] <... mprotect resumed>) = 0 [pid 11203] <... futex resumed>) = 1 [pid 5046] mkdir("./506", 0777 [pid 5047] <... openat resumed>) = 3 [pid 11206] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5047] newfstatat(3, "", [pid 11206] <... openat resumed>) = 4 [pid 11203] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... mkdir resumed>) = 0 [pid 11207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11208] <... symlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11207] <... openat resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11207] write(3, "1000", 4 [pid 11208] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11206] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11204] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./508/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11208] <... symlink resumed>) = 0 [pid 11207] <... write resumed>) = 4 [pid 11204] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11203] <... futex resumed>) = ? [pid 11207] close(3 [pid 11206] +++ killed by SIGIO +++ [pid 11204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] newfstatat(AT_FDCWD, "./508/cgroup.cpu", ./strace-static-x86_64: Process 11209 attached [pid 11208] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11207] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11209] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11208] <... symlink resumed>) = 0 [pid 5047] unlink("./508/cgroup.cpu") = 0 [pid 11207] symlink("/dev/binderfs", "./binderfs" [pid 11209] <... rseq resumed>) = 0 [pid 11208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11204] <... clone3 resumed> => {parent_tid=[993]}, 88) = 993 [pid 5047] umount2("./508/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11204] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11209] set_robust_list(0x7f504ff7f9a0, 24 [pid 11207] <... symlink resumed>) = 0 [pid 11204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11209] <... set_robust_list resumed>) = 0 [pid 11204] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./508/binderfs", [pid 11209] rt_sigprocmask(SIG_SETMASK, [], [pid 11208] write(3, "1000", 4 [pid 11204] <... futex resumed>) = 0 [pid 11209] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11208] <... write resumed>) = 4 [pid 11204] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11208] close(3 [pid 11207] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11210 attached [pid 11209] open(".", O_RDONLY [pid 11208] <... close resumed>) = 0 [pid 5047] unlink("./508/binderfs" [pid 11210] set_robust_list(0x555556ac56a0, 24 [pid 11209] <... open resumed>) = 3 [pid 11208] symlink("/dev/binderfs", "./binderfs" [pid 11207] <... futex resumed>) = 0 [pid 11203] +++ killed by SIGIO +++ [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1014 [pid 11210] <... set_robust_list resumed>) = 0 [pid 11209] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11208] <... symlink resumed>) = 0 [pid 11207] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1045, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... unlink resumed>) = 0 [pid 11209] <... futex resumed>) = 1 [pid 11208] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11207] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11204] <... futex resumed>) = 0 [pid 11210] chdir("./506" [pid 11208] <... futex resumed>) = 0 [pid 11204] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./508/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11210] <... chdir resumed>) = 0 [pid 11208] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11204] <... futex resumed>) = 0 [pid 11210] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11208] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11204] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11210] <... prctl resumed>) = 0 [pid 11208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./508/cgroup", [pid 11210] setpgid(0, 0 [pid 11208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11210] <... setpgid resumed>) = 0 [pid 11208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11210] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11209] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11208] <... mmap resumed>) = 0x7f504ff5f000 [pid 11207] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... openat resumed>) = 3 [pid 5047] unlink("./508/cgroup" [pid 11207] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11209] <... fcntl resumed>) = 0 [pid 11207] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11210] <... symlink resumed>) = 0 [pid 11209] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11208] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11207] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(3, "", [pid 5047] <... unlink resumed>) = 0 [pid 11208] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11210] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11209] <... futex resumed>) = 1 [pid 11207] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11204] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 11209] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11210] <... symlink resumed>) = 0 [pid 11208] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11207] <... mprotect resumed>) = 0 [pid 11204] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./508/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./508/blkio.bfq.io_wait_time_recursive", [pid 11210] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11208] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11210] <... symlink resumed>) = 0 [pid 11209] <... futex resumed>) = 0 [pid 11208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11207] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11204] <... futex resumed>) = 1 [pid 11209] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11207] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11204] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11207] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./508/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11212 attached ./strace-static-x86_64: Process 11211 attached [pid 11210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11209] <... openat resumed>) = 4 [pid 11208] <... clone3 resumed> => {parent_tid=[1025]}, 88) = 1025 [pid 11204] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] unlink("./521/cgroup.cpu" [pid 11212] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11211] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11210] <... openat resumed>) = 3 [pid 11209] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11207] <... clone3 resumed> => {parent_tid=[1047]}, 88) = 1047 [pid 11204] syscall_0x417(0x7f504ff7ff00, 0x20, 0, 0x53053053, 0x7f504ff7f6c0, 0x7ffee211fb77 [pid 11208] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11212] <... rseq resumed>) = 0 [pid 11211] <... rseq resumed>) = 0 [pid 11210] write(3, "1000", 4 [pid 11208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11207] rt_sigprocmask(SIG_SETMASK, [], [pid 11212] set_robust_list(0x7f504ff7f9a0, 24 [pid 11207] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11212] <... set_robust_list resumed>) = 0 [pid 11207] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11212] rt_sigprocmask(SIG_SETMASK, [], [pid 11207] <... futex resumed>) = 0 [pid 11212] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11211] set_robust_list(0x7f504ff7f9a0, 24 [pid 11210] <... write resumed>) = 4 [pid 11208] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11207] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./508/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11212] open(".", O_RDONLY [pid 11211] <... set_robust_list resumed>) = 0 [pid 11210] close(3 [pid 11208] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11211] rt_sigprocmask(SIG_SETMASK, [], [pid 11210] <... close resumed>) = 0 [pid 11208] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./521/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./508/cgroup.net", [pid 11211] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11210] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11212] <... open resumed>) = 3 [pid 11211] open(".", O_RDONLY [pid 11210] <... symlink resumed>) = 0 [pid 5050] unlink("./521/binderfs" [pid 11212] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11211] <... open resumed>) = 3 [pid 11210] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./508/cgroup.net" [pid 11210] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11211] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11212] <... futex resumed>) = 1 [pid 11211] <... futex resumed>) = 1 [pid 11210] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11208] <... futex resumed>) = 0 [pid 11207] <... futex resumed>) = 0 [pid 11212] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11211] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11210] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11208] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11207] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 11212] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11211] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11209] +++ killed by SIGIO +++ [pid 11208] <... futex resumed>) = 0 [pid 11207] <... futex resumed>) = 0 [pid 11204] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11211] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11210] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11208] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./521/cgroup", [pid 5047] close(3 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=992, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11211] <... fcntl resumed>) = 0 [pid 11210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 11211] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11210] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] unlink("./521/cgroup" [pid 11212] <... fcntl resumed>) = 0 [pid 11211] <... futex resumed>) = 1 [pid 11208] <... futex resumed>) = 0 [pid 11207] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5047] rmdir("./508" [pid 11212] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11211] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11210] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11208] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11212] <... futex resumed>) = 0 [pid 11207] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11212] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11207] <... futex resumed>) = 0 [pid 11210] <... mprotect resumed>) = 0 [pid 11212] <... openat resumed>) = 4 [pid 11211] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11208] <... futex resumed>) = 0 [pid 5050] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 [pid 5045] umount2("./495", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11211] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11208] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 11211] <... openat resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./495", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11212] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11210] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11207] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 11212] <... futex resumed>) = ? [pid 11210] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11212] +++ killed by SIGIO +++ [pid 11211] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11208] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... unlink resumed>) = 0 [pid 5047] mkdir("./509", 0777 [pid 5045] <... openat resumed>) = 3 [pid 11208] restart_syscall(<... resuming interrupted futex ...> [pid 11210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... mkdir resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11208] <... restart_syscall resumed>) = ? [pid 5050] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11213 attached [pid 11210] <... clone3 resumed> => {parent_tid=[1015]}, 88) = 1015 [pid 11213] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11210] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11213] set_robust_list(0x7f504ff7f9a0, 24 [pid 11210] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11207] +++ killed by SIGIO +++ [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11213] <... set_robust_list resumed>) = 0 [pid 11210] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11213] rt_sigprocmask(SIG_SETMASK, [], [pid 11210] <... futex resumed>) = 0 [pid 11213] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11210] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11213] open(".", O_RDONLY [pid 5050] newfstatat(AT_FDCWD, "./521/cgroup.net", [pid 5045] getdents64(3, [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1046, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./521/cgroup.net" [pid 5045] umount2("./495/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./495/cgroup.cpu", [pid 5051] <... openat resumed>) = 3 [pid 5050] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11214 attached [pid 11213] <... open resumed>) = 3 [pid 11211] +++ killed by SIGIO +++ [pid 11208] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./495/cgroup.cpu" [pid 11214] set_robust_list(0x555556ac56a0, 24 [pid 11213] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] close(3 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1024, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1020 [pid 5045] <... unlink resumed>) = 0 [pid 11214] <... set_robust_list resumed>) = 0 [pid 11213] <... futex resumed>) = 1 [pid 11210] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] <... close resumed>) = 0 [pid 11214] chdir("./509" [pid 11213] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11210] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./521" [pid 5045] umount2("./495/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11214] <... chdir resumed>) = 0 [pid 11213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11210] <... futex resumed>) = 0 [pid 5051] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11214] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11213] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11210] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11214] <... prctl resumed>) = 0 [pid 11213] <... fcntl resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./495/binderfs", [pid 11214] setpgid(0, 0 [pid 5051] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 5050] mkdir("./522", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11214] <... setpgid resumed>) = 0 [pid 11213] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5045] unlink("./495/binderfs" [pid 11213] <... futex resumed>) = 1 [pid 11210] <... futex resumed>) = 0 [pid 5051] unlink("./522/cgroup.cpu" [pid 11213] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] umount2("./511", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11214] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11210] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11213] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5045] umount2("./495/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11214] <... symlink resumed>) = 0 [pid 5051] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./495/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./495/cgroup" [pid 11213] <... openat resumed>) = 4 [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./522/binderfs", [pid 5045] umount2("./495/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./495/blkio.bfq.io_wait_time_recursive", [pid 5051] unlink("./522/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11214] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./495/blkio.bfq.io_wait_time_recursive" [pid 5051] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./522/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./495/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./522/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./511", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11214] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./495/cgroup.net", [pid 5049] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11215 attached [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11215] set_robust_list(0x555556ac56a0, 24 [pid 11210] <... futex resumed>) = 0 [pid 5051] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./495/cgroup.net" [pid 11215] <... set_robust_list resumed>) = 0 [pid 11210] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11215] chdir("./522" [pid 11214] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11213] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 5051] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", [pid 5045] getdents64(3, [pid 11215] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11215] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11214] <... symlink resumed>) = 0 [pid 11213] <... futex resumed>) = ? [pid 5051] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 5049] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11215] <... prctl resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] close(3) = 0 [pid 11215] setpgid(0, 0) = 0 [pid 11215] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./495" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./522/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./522/cgroup.net") = 0 [pid 11215] <... symlink resumed>) = 0 [pid 11214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... rmdir resumed>) = 0 [pid 11215] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11214] <... openat resumed>) = 3 [pid 5051] close(3) = 0 [pid 11215] <... symlink resumed>) = 0 [pid 11214] write(3, "1000", 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1047 [pid 5049] umount2("./511/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11214] <... write resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11214] close(3 [pid 5049] newfstatat(AT_FDCWD, "./511/cgroup.cpu", [pid 11214] <... close resumed>) = 0 [pid 11215] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11214] symlink("/dev/binderfs", "./binderfs" [pid 5051] rmdir("./522" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./496", 0777 [pid 11215] <... symlink resumed>) = 0 [pid 11214] <... symlink resumed>) = 0 [pid 11213] +++ killed by SIGIO +++ [pid 11210] +++ killed by SIGIO +++ [pid 5051] <... rmdir resumed>) = 0 [pid 5049] unlink("./511/cgroup.cpu" [pid 5045] <... mkdir resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1014, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... restart_syscall resumed>) = 0 [pid 5051] mkdir("./523", 0777 [pid 5049] <... unlink resumed>) = 0 [pid 11215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11214] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] umount2("./506", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./506", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11215] <... openat resumed>) = 3 [pid 11214] <... futex resumed>) = 0 [pid 5049] umount2("./511/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", ./strace-static-x86_64: Process 11216 attached ./strace-static-x86_64: Process 11217 attached [pid 11216] set_robust_list(0x555556ac56a0, 24 [pid 11215] write(3, "1000", 4 [pid 11214] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11217] set_robust_list(0x555556ac56a0, 24 [pid 11216] <... set_robust_list resumed>) = 0 [pid 11215] <... write resumed>) = 4 [pid 11214] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1048 [pid 5049] newfstatat(AT_FDCWD, "./511/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 994 [pid 11217] <... set_robust_list resumed>) = 0 [pid 11216] chdir("./496" [pid 11215] close(3 [pid 11214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11214] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./511/binderfs" [pid 5046] getdents64(3, [pid 11214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11216] <... chdir resumed>) = 0 [pid 11215] <... close resumed>) = 0 [pid 11216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11215] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 11217] chdir("./523" [pid 11216] <... prctl resumed>) = 0 [pid 11215] <... symlink resumed>) = 0 [pid 11214] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11216] setpgid(0, 0 [pid 5046] umount2("./506/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11216] <... setpgid resumed>) = 0 [pid 11215] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11217] <... chdir resumed>) = 0 [pid 11216] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11215] <... futex resumed>) = 0 [pid 11214] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./511/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./506/cgroup.cpu", [pid 11217] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] newfstatat(AT_FDCWD, "./511/cgroup", [pid 11217] <... prctl resumed>) = 0 [pid 11216] <... symlink resumed>) = 0 [pid 11215] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11215] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11214] <... mprotect resumed>) = 0 [pid 11217] setpgid(0, 0 [pid 11215] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] unlink("./511/cgroup" [pid 5046] unlink("./506/cgroup.cpu" [pid 11217] <... setpgid resumed>) = 0 [pid 11216] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11215] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11216] <... symlink resumed>) = 0 [pid 11215] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11215] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 11215] <... mprotect resumed>) = 0 [pid 11216] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11217] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11214] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11217] <... symlink resumed>) = 0 [pid 11216] <... symlink resumed>) = 0 [pid 11215] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11214] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./511/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11217] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11215] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./506/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11218 attached [pid 11217] <... symlink resumed>) = 0 [pid 11215] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./511/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11219 attached [pid 11218] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11217] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11216] <... openat resumed>) = 3 [pid 11214] <... clone3 resumed> => {parent_tid=[1021]}, 88) = 1021 [pid 11219] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11218] <... rseq resumed>) = 0 [pid 11217] <... symlink resumed>) = 0 [pid 11215] <... clone3 resumed> => {parent_tid=[1048]}, 88) = 1048 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./506/binderfs", [pid 11218] set_robust_list(0x7f504ff7f9a0, 24 [pid 11216] write(3, "1000", 4 [pid 11214] rt_sigprocmask(SIG_SETMASK, [], [pid 11218] <... set_robust_list resumed>) = 0 [pid 11216] <... write resumed>) = 4 [pid 11214] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11218] rt_sigprocmask(SIG_SETMASK, [], [pid 11216] close(3 [pid 11214] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./511/blkio.bfq.io_wait_time_recursive" [pid 11216] <... close resumed>) = 0 [pid 11219] <... rseq resumed>) = 0 [pid 11217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11215] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11219] set_robust_list(0x7f504ff7f9a0, 24 [pid 11217] <... openat resumed>) = 3 [pid 11215] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11214] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./506/binderfs" [pid 11219] <... set_robust_list resumed>) = 0 [pid 11218] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11217] write(3, "1000", 4 [pid 11216] symlink("/dev/binderfs", "./binderfs" [pid 11215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11214] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./511/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11219] rt_sigprocmask(SIG_SETMASK, [], [pid 11217] <... write resumed>) = 4 [pid 11215] <... futex resumed>) = 0 [pid 11217] close(3 [pid 11216] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11218] open(".", O_RDONLY [pid 11219] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11217] <... close resumed>) = 0 [pid 11215] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./511/cgroup.net", [pid 5046] umount2("./506/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11219] open(".", O_RDONLY [pid 11218] <... open resumed>) = 3 [pid 11217] symlink("/dev/binderfs", "./binderfs" [pid 11216] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11218] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] <... futex resumed>) = 0 [pid 11218] <... futex resumed>) = 1 [pid 5049] unlink("./511/cgroup.net" [pid 11218] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11216] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11214] <... futex resumed>) = 0 [pid 11216] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11214] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11218] <... futex resumed>) = 0 [pid 11214] <... futex resumed>) = 1 [pid 11219] <... open resumed>) = 3 [pid 11218] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11217] <... symlink resumed>) = 0 [pid 11216] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11214] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11219] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11218] <... fcntl resumed>) = 0 [pid 11217] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./506/cgroup", [pid 11219] <... futex resumed>) = 1 [pid 11217] <... futex resumed>) = 0 [pid 11215] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11219] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11217] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11218] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5046] unlink("./506/cgroup" [pid 11219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11218] <... futex resumed>) = 1 [pid 11217] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11216] <... mmap resumed>) = 0x7f504ff5f000 [pid 11215] <... futex resumed>) = 0 [pid 11214] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11219] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11218] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11217] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11216] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11215] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11214] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] close(3 [pid 11219] <... fcntl resumed>) = 0 [pid 11218] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11214] <... futex resumed>) = 0 [pid 5046] umount2("./506/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11219] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11218] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11214] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11219] <... futex resumed>) = 1 [pid 11217] <... mmap resumed>) = 0x7f504ff5f000 [pid 11215] <... futex resumed>) = 0 [pid 11219] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11217] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./506/blkio.bfq.io_wait_time_recursive", [pid 11219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11218] <... openat resumed>) = 4 [pid 11217] <... mprotect resumed>) = 0 [pid 11216] <... mprotect resumed>) = 0 [pid 11215] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11219] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11218] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11217] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11215] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./511" [pid 11219] <... openat resumed>) = 4 [pid 11217] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11216] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11215] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] unlink("./506/blkio.bfq.io_wait_time_recursive" [pid 11214] <... futex resumed>) = ? [pid 11219] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11218] +++ killed by SIGIO +++ [pid 11217] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... rmdir resumed>) = 0 [pid 5049] mkdir("./512", 0777 [pid 11216] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11219] +++ killed by SIGIO +++ [pid 5049] <... mkdir resumed>) = 0 [pid 11215] +++ killed by SIGIO +++ [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1047, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] umount2("./506/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11217] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 ./strace-static-x86_64: Process 11221 attached [pid 11221] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11217] rt_sigprocmask(SIG_SETMASK, [], [pid 11216] <... clone3 resumed> => {parent_tid=[995]}, 88) = 995 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11220 attached [pid 11221] <... rseq resumed>) = 0 [pid 11217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11216] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./506/cgroup.net", [pid 11221] set_robust_list(0x7f504ff7f9a0, 24 [pid 11217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11214] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11222 attached [pid 11221] <... set_robust_list resumed>) = 0 [pid 11220] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11217] <... futex resumed>) = 0 [pid 11216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11222] set_robust_list(0x555556ac56a0, 24 [pid 11221] rt_sigprocmask(SIG_SETMASK, [], [pid 11220] <... rseq resumed>) = 0 [pid 11217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11216] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1026 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1020, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] unlink("./506/cgroup.net" [pid 11222] <... set_robust_list resumed>) = 0 [pid 11221] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11220] set_robust_list(0x7f504ff7f9a0, 24 [pid 11216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./509", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11221] open(".", O_RDONLY [pid 11220] <... set_robust_list resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11221] <... open resumed>) = 3 [pid 11220] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./509", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] close(3 [pid 11222] chdir("./512" [pid 11221] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11220] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(3, "", [pid 5047] <... openat resumed>) = 3 [pid 5046] <... close resumed>) = 0 [pid 11222] <... chdir resumed>) = 0 [pid 11221] <... futex resumed>) = 1 [pid 5046] rmdir("./506" [pid 11222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11221] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11220] open(".", O_RDONLY [pid 11216] <... futex resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11222] <... prctl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11220] <... open resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 5046] mkdir("./507", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] getdents64(3, [pid 5047] umount2("./509/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11222] setpgid(0, 0 [pid 11220] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... mkdir resumed>) = 0 [pid 11222] <... setpgid resumed>) = 0 [pid 11221] <... futex resumed>) = 0 [pid 11220] <... futex resumed>) = 1 [pid 11217] <... futex resumed>) = 0 [pid 11216] <... futex resumed>) = 1 [pid 5050] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11221] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11220] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./509/cgroup.cpu", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11222] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11221] <... fcntl resumed>) = 0 [pid 11220] <... fcntl resumed>) = 0 [pid 11217] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11222] <... symlink resumed>) = 0 [pid 11221] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11220] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11223 attached [pid 11222] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11221] <... futex resumed>) = 1 [pid 11220] <... futex resumed>) = 0 [pid 11217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11216] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./509/cgroup.cpu" [pid 11223] set_robust_list(0x555556ac56a0, 24 [pid 11221] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11220] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./522/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1016 [pid 11223] <... set_robust_list resumed>) = 0 [pid 11222] <... symlink resumed>) = 0 [pid 11220] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11217] <... futex resumed>) = 0 [pid 11220] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11223] chdir("./507" [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./509/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] <... chdir resumed>) = 0 [pid 11222] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11221] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11220] <... openat resumed>) = 4 [pid 11216] <... futex resumed>) = 0 [pid 5050] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11221] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11223] <... prctl resumed>) = 0 [pid 11222] <... symlink resumed>) = 0 [pid 11220] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./509/binderfs", [pid 11222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11217] <... futex resumed>) = ? [pid 11216] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] newfstatat(AT_FDCWD, "./522/binderfs", [pid 11220] +++ killed by SIGIO +++ [pid 11223] setpgid(0, 0 [pid 11216] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11223] <... setpgid resumed>) = 0 [pid 11221] <... openat resumed>) = ? [pid 11223] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11222] <... openat resumed>) = 3 [pid 5050] unlink("./522/binderfs" [pid 5047] unlink("./509/binderfs" [pid 11222] write(3, "1000", 4 [pid 11223] <... symlink resumed>) = 0 [pid 11222] <... write resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11217] +++ killed by SIGIO +++ [pid 5050] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5047] umount2("./509/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./509/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11223] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1048, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11222] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./509/cgroup" [pid 11223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... unlink resumed>) = 0 [pid 11223] <... openat resumed>) = 3 [pid 11222] <... close resumed>) = 0 [pid 11221] +++ killed by SIGIO +++ [pid 11216] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./522/cgroup", [pid 11223] write(3, "1000", 4 [pid 11222] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./509/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=994, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11223] <... write resumed>) = 4 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11223] close(3 [pid 11222] <... symlink resumed>) = 0 [pid 5051] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./522/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... restart_syscall resumed>) = 0 [pid 11223] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11223] symlink("/dev/binderfs", "./binderfs" [pid 11222] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./509/blkio.bfq.io_wait_time_recursive", [pid 11223] <... symlink resumed>) = 0 [pid 11222] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./496", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] <... futex resumed>) = 0 [pid 11222] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(3, "", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11223] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11222] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", [pid 5047] unlink("./509/blkio.bfq.io_wait_time_recursive" [pid 11223] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] openat(AT_FDCWD, "./496", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11223] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5050] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11223] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] newfstatat(3, "", [pid 11223] <... mmap resumed>) = 0x7f504ff5f000 [pid 11222] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./509/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11223] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11223] <... mprotect resumed>) = 0 [pid 11222] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./509/cgroup.net", [pid 11222] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./523/cgroup.cpu", [pid 11223] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 11222] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./523/cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./522/cgroup.net", [pid 5047] unlink("./509/cgroup.net" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11223] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./496/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11223] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11224 attached [pid 11222] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./522/cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./496/cgroup.cpu", [pid 11224] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11223] <... clone3 resumed> => {parent_tid=[1017]}, 88) = 1017 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11224] <... rseq resumed>) = 0 [pid 11223] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] getdents64(3, [pid 11224] set_robust_list(0x7f504ff7f9a0, 24 [pid 11223] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] unlink("./496/cgroup.cpu" [pid 11224] <... set_robust_list resumed>) = 0 [pid 11223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11225 attached [pid 11224] rt_sigprocmask(SIG_SETMASK, [], [pid 11223] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5047] close(3 [pid 11222] <... clone3 resumed> => {parent_tid=[1027]}, 88) = 1027 [pid 5051] newfstatat(AT_FDCWD, "./523/binderfs", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11225] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11224] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./496/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11225] <... rseq resumed>) = 0 [pid 11224] open(".", O_RDONLY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11225] set_robust_list(0x7f504ff7f9a0, 24 [pid 11224] <... open resumed>) = 3 [pid 11222] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] close(3 [pid 5047] <... close resumed>) = 0 [pid 11225] <... set_robust_list resumed>) = 0 [pid 11224] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./523/binderfs" [pid 5050] <... close resumed>) = 0 [pid 5047] rmdir("./509" [pid 5045] newfstatat(AT_FDCWD, "./496/binderfs", [pid 11225] rt_sigprocmask(SIG_SETMASK, [], [pid 11224] <... futex resumed>) = 1 [pid 11223] <... futex resumed>) = 0 [pid 11222] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11225] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11224] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... rmdir resumed>) = 0 [pid 11225] open(".", O_RDONLY) = 3 [pid 11224] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11223] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] rmdir("./522" [pid 5045] unlink("./496/binderfs" [pid 11225] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11224] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11222] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11225] <... futex resumed>) = 0 [pid 11224] <... fcntl resumed>) = 0 [pid 11222] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... rmdir resumed>) = 0 [pid 5047] mkdir("./510", 0777 [pid 11225] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11224] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11224] <... futex resumed>) = 1 [pid 11223] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./523/cgroup", [pid 5050] mkdir("./523", 0777 [pid 5045] umount2("./496/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11224] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11224] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11223] <... futex resumed>) = 0 [pid 11222] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./523/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./496/cgroup", [pid 11225] <... futex resumed>) = 0 [pid 11224] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11222] <... futex resumed>) = 1 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11225] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11224] <... openat resumed>) = 4 [pid 11222] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11225] <... fcntl resumed>) = 0 [pid 5045] unlink("./496/cgroup" [pid 11225] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11224] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11223] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 11225] <... futex resumed>) = 1 [pid 11222] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11225] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11222] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./496/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11222] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11225] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11222] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./496/blkio.bfq.io_wait_time_recursive", [pid 11225] <... openat resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11226 attached [pid 5045] unlink("./496/blkio.bfq.io_wait_time_recursive" [pid 11226] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... unlink resumed>) = 0 [pid 11226] <... set_robust_list resumed>) = 0 [pid 11222] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11226] chdir("./523" [pid 11225] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11222] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- ./strace-static-x86_64: Process 11227 attached [pid 11226] <... chdir resumed>) = 0 [pid 5045] umount2("./496/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11225] <... futex resumed>) = ? [pid 11226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11227] set_robust_list(0x555556ac56a0, 24 [pid 11226] <... prctl resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./496/cgroup.net", [pid 11227] <... set_robust_list resumed>) = 0 [pid 11226] setpgid(0, 0 [pid 11227] chdir("./510" [pid 11226] <... setpgid resumed>) = 0 [pid 11225] +++ killed by SIGIO +++ [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./496/cgroup.net" [pid 11226] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11224] +++ killed by SIGIO +++ [pid 11223] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1049 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1022 [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11227] <... chdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 5045] getdents64(3, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11227] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] unlink("./523/cgroup.net" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1016, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5045] close(3 [pid 11227] <... prctl resumed>) = 0 [pid 11222] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11226] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5045] rmdir("./496" [pid 11227] setpgid(0, 0 [pid 11226] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1026, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] umount2("./507", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] close(3) = 0 [pid 11227] <... setpgid resumed>) = 0 [pid 5051] rmdir("./523" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 11227] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11226] <... symlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./507", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11227] <... symlink resumed>) = 0 [pid 11226] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5045] mkdir("./497", 0777 [pid 11227] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11226] <... symlink resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] mkdir("./524", 0777 [pid 5049] umount2("./512", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 5045] <... mkdir resumed>) = 0 [pid 11226] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11227] <... symlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./512", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11227] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5046] getdents64(3, [pid 5049] newfstatat(3, "", [pid 11227] <... symlink resumed>) = 0 [pid 11226] write(3, "1000", 4 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11228 attached [pid 11226] <... write resumed>) = 4 [pid 11228] set_robust_list(0x555556ac56a0, 24 [pid 11227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11226] close(3 [pid 5049] getdents64(3, [pid 5046] umount2("./507/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 996 [pid 11228] <... set_robust_list resumed>) = 0 [pid 11227] <... openat resumed>) = 3 [pid 11226] <... close resumed>) = 0 ./strace-static-x86_64: Process 11229 attached [pid 11228] chdir("./497" [pid 11226] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11227] write(3, "1000", 4 [pid 11228] <... chdir resumed>) = 0 [pid 11227] <... write resumed>) = 4 [pid 11226] <... symlink resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1050 [pid 11229] set_robust_list(0x555556ac56a0, 24 [pid 11228] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./512/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./507/cgroup.cpu", [pid 11227] close(3 [pid 11229] <... set_robust_list resumed>) = 0 [pid 11228] <... prctl resumed>) = 0 [pid 11226] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11227] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11228] setpgid(0, 0 [pid 11229] chdir("./524" [pid 11227] symlink("/dev/binderfs", "./binderfs" [pid 11226] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./512/cgroup.cpu", [pid 5046] unlink("./507/cgroup.cpu" [pid 11229] <... chdir resumed>) = 0 [pid 11228] <... setpgid resumed>) = 0 [pid 11226] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11228] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11226] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11227] <... symlink resumed>) = 0 [pid 11229] <... prctl resumed>) = 0 [pid 11229] setpgid(0, 0 [pid 11227] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11228] <... symlink resumed>) = 0 [pid 5049] unlink("./512/cgroup.cpu" [pid 5046] umount2("./507/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11229] <... setpgid resumed>) = 0 [pid 11228] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11227] <... futex resumed>) = 0 [pid 11226] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11228] <... symlink resumed>) = 0 [pid 11226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./512/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11229] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11227] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./507/binderfs", [pid 11227] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11228] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11227] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11226] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./512/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11229] <... symlink resumed>) = 0 [pid 11228] <... symlink resumed>) = 0 [pid 11226] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11226] <... mprotect resumed>) = 0 [pid 5049] unlink("./512/binderfs" [pid 11229] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11227] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11226] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./507/binderfs" [pid 11227] <... mmap resumed>) = 0x7f504ff5f000 [pid 11226] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11228] <... openat resumed>) = 3 [pid 5049] umount2("./512/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11230 attached [pid 11226] <... clone3 resumed> => {parent_tid=[1050]}, 88) = 1050 [pid 5049] newfstatat(AT_FDCWD, "./512/cgroup", [pid 11230] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11226] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11230] <... rseq resumed>) = 0 [pid 11227] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11226] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11230] set_robust_list(0x7f504ff7f9a0, 24 [pid 11226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11230] <... set_robust_list resumed>) = 0 [pid 11226] <... futex resumed>) = 0 [pid 5049] unlink("./512/cgroup" [pid 11230] rt_sigprocmask(SIG_SETMASK, [], [pid 11229] <... symlink resumed>) = 0 [pid 11228] write(3, "1000", 4 [pid 11226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11227] <... mprotect resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11230] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11229] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11228] <... write resumed>) = 4 [pid 5046] umount2("./507/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11230] open(".", O_RDONLY [pid 5049] umount2("./512/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11228] close(3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./507/cgroup", [pid 11228] <... close resumed>) = 0 [pid 11227] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11228] symlink("/dev/binderfs", "./binderfs" [pid 11229] <... symlink resumed>) = 0 [pid 11227] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11230] <... open resumed>) = 3 [pid 11229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11227] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./512/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./507/cgroup" [pid 11230] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11228] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11231 attached [pid 11230] <... futex resumed>) = 1 [pid 11226] <... futex resumed>) = 0 [pid 5049] unlink("./512/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 11231] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11230] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11231] <... rseq resumed>) = 0 [pid 11230] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11226] <... futex resumed>) = 0 [pid 11230] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11231] set_robust_list(0x7f504ff7f9a0, 24 [pid 11230] <... fcntl resumed>) = 0 [pid 11226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./512/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11231] <... set_robust_list resumed>) = 0 [pid 11230] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11229] <... openat resumed>) = 3 [pid 11228] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11227] <... clone3 resumed> => {parent_tid=[1023]}, 88) = 1023 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./507/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11231] rt_sigprocmask(SIG_SETMASK, [], [pid 11230] <... futex resumed>) = 0 [pid 11229] write(3, "1000", 4 [pid 11228] <... futex resumed>) = 0 [pid 11227] rt_sigprocmask(SIG_SETMASK, [], [pid 11226] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11231] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11230] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11229] <... write resumed>) = 4 [pid 11228] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11227] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./512/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11231] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11230] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11229] close(3 [pid 11228] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11227] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11226] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11231] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11230] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11229] <... close resumed>) = 0 [pid 11228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11227] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./507/blkio.bfq.io_wait_time_recursive", [pid 11231] open(".", O_RDONLY [pid 11230] <... openat resumed>) = 4 [pid 11229] symlink("/dev/binderfs", "./binderfs" [pid 11228] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11227] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./512/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11231] <... open resumed>) = 3 [pid 11228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] unlink("./507/blkio.bfq.io_wait_time_recursive" [pid 11229] <... symlink resumed>) = 0 [pid 11228] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 11231] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11230] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11228] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./507/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11231] <... futex resumed>) = 1 [pid 11229] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11228] <... mprotect resumed>) = 0 [pid 11227] <... futex resumed>) = 0 [pid 11231] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11226] <... futex resumed>) = ? [pid 5049] getdents64(3, [pid 11230] +++ killed by SIGIO +++ [pid 11229] <... futex resumed>) = 0 [pid 11228] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11227] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11229] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11227] <... futex resumed>) = 1 [pid 5046] newfstatat(AT_FDCWD, "./507/cgroup.net", [pid 11229] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11228] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11227] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11231] <... futex resumed>) = 0 [pid 11229] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11231] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] close(3./strace-static-x86_64: Process 11232 attached [pid 11229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11231] <... fcntl resumed>) = 0 [pid 11232] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11229] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... close resumed>) = 0 [pid 5046] unlink("./507/cgroup.net" [pid 11231] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11232] <... rseq resumed>) = 0 [pid 5049] rmdir("./512" [pid 11231] <... futex resumed>) = 1 [pid 11232] set_robust_list(0x7f504ff7f9a0, 24 [pid 11227] <... futex resumed>) = 0 [pid 11229] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11228] <... clone3 resumed> => {parent_tid=[997]}, 88) = 997 [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11232] <... set_robust_list resumed>) = 0 [pid 11231] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11229] <... mprotect resumed>) = 0 [pid 11228] rt_sigprocmask(SIG_SETMASK, [], [pid 11227] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11229] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11228] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] getdents64(3, [pid 11228] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11226] +++ killed by SIGIO +++ [pid 11231] <... openat resumed>) = 4 [pid 11229] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11228] <... futex resumed>) = 0 [pid 11227] <... futex resumed>) = 0 [pid 5049] mkdir("./513", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11229] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11228] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1049, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11232] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5050] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11229] <... clone3 resumed> => {parent_tid=[1051]}, 88) = 1051 [pid 5049] <... mkdir resumed>) = 0 [pid 11232] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11231] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11227] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11229] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11232] open(".", O_RDONLY [pid 5046] close(3 [pid 11229] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5046] <... close resumed>) = 0 [pid 11229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 11229] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] rmdir("./507" [pid 11229] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... rmdir resumed>) = 0 [pid 5050] getdents64(3, [pid 11231] +++ killed by SIGIO +++ [pid 11227] +++ killed by SIGIO +++ [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./523/cgroup.cpu", [pid 5046] mkdir("./508", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5050] unlink("./523/cgroup.cpu" [pid 11232] <... open resumed>) = 3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11233 attached [pid 11232] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11234 attached [pid 11233] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11232] <... futex resumed>) = 1 [pid 11228] <... futex resumed>) = 0 [pid 11234] set_robust_list(0x555556ac56a0, 24 [pid 11233] <... rseq resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1022, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11234] <... set_robust_list resumed>) = 0 [pid 11233] set_robust_list(0x7f504ff7f9a0, 24 [pid 11228] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11234] chdir("./513" [pid 11232] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11228] <... futex resumed>) = 0 [pid 5050] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11234] <... chdir resumed>) = 0 [pid 11233] <... set_robust_list resumed>) = 0 [pid 11232] <... fcntl resumed>) = 0 [pid 11228] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11233] rt_sigprocmask(SIG_SETMASK, [], [pid 11232] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11233] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11232] <... futex resumed>) = 1 [pid 5047] umount2("./510", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11234] <... prctl resumed>) = 0 [pid 11233] open(".", O_RDONLY [pid 11228] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./523/binderfs", [pid 11232] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11234] setpgid(0, 0 [pid 11233] <... open resumed>) = 3 [pid 11232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11228] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11234] <... setpgid resumed>) = 0 [pid 11233] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11232] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11228] <... futex resumed>) = 0 [pid 5050] unlink("./523/binderfs" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1028 [pid 5047] openat(AT_FDCWD, "./510", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11235 attached [pid 11234] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11233] <... futex resumed>) = 1 [pid 11232] <... openat resumed>) = 4 [pid 11229] <... futex resumed>) = 0 [pid 11228] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... openat resumed>) = 3 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1018 [pid 11233] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 11233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11232] +++ killed by SIGIO +++ [pid 11229] <... futex resumed>) = 0 [pid 11233] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11229] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11233] <... fcntl resumed>) = 0 [pid 11235] set_robust_list(0x555556ac56a0, 24 [pid 11234] <... symlink resumed>) = 0 [pid 11233] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11235] <... set_robust_list resumed>) = 0 [pid 5050] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11235] chdir("./508" [pid 11234] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11233] <... futex resumed>) = 1 [pid 11229] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 11235] <... chdir resumed>) = 0 [pid 11234] <... symlink resumed>) = 0 [pid 11233] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] newfstatat(AT_FDCWD, "./523/cgroup", [pid 11235] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11235] <... prctl resumed>) = 0 [pid 11234] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11233] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11229] <... futex resumed>) = 0 [pid 11228] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11235] setpgid(0, 0 [pid 5050] unlink("./523/cgroup" [pid 5047] umount2("./510/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11235] <... setpgid resumed>) = 0 [pid 11234] <... symlink resumed>) = 0 [pid 11233] <... openat resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=996, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11235] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11235] <... symlink resumed>) = 0 [pid 11234] <... openat resumed>) = 3 [pid 11233] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11229] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./510/cgroup.cpu", [pid 11235] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11234] write(3, "1000", 4 [pid 11233] <... futex resumed>) = ? [pid 5050] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11235] <... symlink resumed>) = 0 [pid 11234] <... write resumed>) = 4 [pid 11233] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./510/cgroup.cpu" [pid 11234] close(3 [pid 11235] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11234] <... close resumed>) = 0 [pid 5050] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./497", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11235] <... symlink resumed>) = 0 [pid 11234] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 11235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11234] <... symlink resumed>) = 0 [pid 11229] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./510/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11235] <... openat resumed>) = 3 [pid 11234] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./497", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11235] write(3, "1000", 4 [pid 11234] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1050, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] newfstatat(AT_FDCWD, "./510/binderfs", [pid 11235] <... write resumed>) = 4 [pid 11234] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11235] close(3 [pid 11234] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11235] <... close resumed>) = 0 [pid 11235] symlink("/dev/binderfs", "./binderfs" [pid 11234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./510/binderfs" [pid 11235] <... symlink resumed>) = 0 [pid 11234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 5045] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", [pid 11234] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 5050] unlink("./523/cgroup.net" [pid 11235] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11234] <... mprotect resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./510/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11235] <... futex resumed>) = 0 [pid 11234] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] getdents64(3, [pid 5045] getdents64(3, [pid 11235] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11234] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11235] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] close(3 [pid 5047] newfstatat(AT_FDCWD, "./510/cgroup", [pid 5045] umount2("./497/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11235] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./524/cgroup.cpu", ./strace-static-x86_64: Process 11236 attached [pid 11235] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11236] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11234] <... clone3 resumed> => {parent_tid=[1029]}, 88) = 1029 [pid 5050] rmdir("./523" [pid 5047] unlink("./510/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./497/cgroup.cpu", [pid 11236] <... rseq resumed>) = 0 [pid 11235] <... mmap resumed>) = 0x7f504ff5f000 [pid 11234] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./524/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 11236] set_robust_list(0x7f504ff7f9a0, 24 [pid 11235] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11236] <... set_robust_list resumed>) = 0 [pid 11235] <... mprotect resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5045] unlink("./497/cgroup.cpu" [pid 11236] rt_sigprocmask(SIG_SETMASK, [], [pid 11235] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11235] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11234] <... futex resumed>) = 0 [pid 5051] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11236] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11235] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] mkdir("./524", 0777 [pid 5047] umount2("./510/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11237 attached [pid 11236] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./524/binderfs", [pid 5045] umount2("./497/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11237] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11235] <... clone3 resumed> => {parent_tid=[1019]}, 88) = 1019 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11237] <... rseq resumed>) = 0 [pid 11236] <... open resumed>) = 3 [pid 11235] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./524/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11237] set_robust_list(0x7f504ff7f9a0, 24 [pid 11236] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11235] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./510/blkio.bfq.io_wait_time_recursive", [pid 11237] <... set_robust_list resumed>) = 0 [pid 11236] <... futex resumed>) = 1 [pid 11235] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11234] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./497/binderfs", [pid 11237] rt_sigprocmask(SIG_SETMASK, [], [pid 11235] <... futex resumed>) = 0 [pid 11234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11235] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11234] <... futex resumed>) = 0 [pid 5051] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11237] open(".", O_RDONLY [pid 11236] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11237] <... open resumed>) = 3 [pid 11236] <... fcntl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./524/cgroup", [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] unlink("./510/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./497/binderfs" [pid 11237] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11237] <... futex resumed>) = 1 [pid 11235] <... futex resumed>) = 0 [pid 11237] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11235] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./524/cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11235] <... futex resumed>) = 0 [pid 5045] umount2("./497/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11237] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11235] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 11237] <... fcntl resumed>) = 0 [pid 11237] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11235] <... futex resumed>) = 0 [pid 5051] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11237] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11235] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11237] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11235] <... futex resumed>) = 0 [pid 11236] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 11237] <... openat resumed>) = 4 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11238 attached [pid 11236] <... futex resumed>) = 1 [pid 11235] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11234] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11238] set_robust_list(0x555556ac56a0, 24 [pid 11234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11238] <... set_robust_list resumed>) = 0 [pid 11238] chdir("./524" [pid 11236] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11234] <... futex resumed>) = 0 [pid 5051] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./510/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./497/cgroup", [pid 11238] <... chdir resumed>) = 0 [pid 11236] <... openat resumed>) = 4 [pid 11234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1051 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11238] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11236] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11234] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./510/cgroup.net", [pid 5045] unlink("./497/cgroup" [pid 11238] <... prctl resumed>) = 0 [pid 11237] +++ killed by SIGIO +++ [pid 11235] +++ killed by SIGIO +++ [pid 5051] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11238] setpgid(0, 0 [pid 11236] +++ killed by SIGIO +++ [pid 5047] unlink("./510/cgroup.net" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1018, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] umount2("./497/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11238] <... setpgid resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11238] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] umount2("./508", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./497/blkio.bfq.io_wait_time_recursive", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11238] <... symlink resumed>) = 0 [pid 11234] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] openat(AT_FDCWD, "./508", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11238] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] close(3 [pid 5046] <... openat resumed>) = 3 [pid 5045] unlink("./497/blkio.bfq.io_wait_time_recursive" [pid 5051] unlink("./524/cgroup.net" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1028, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11238] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... close resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11238] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] getdents64(3, [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] rmdir("./510" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11238] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] umount2("./497/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... close resumed>) = 0 [pid 11238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] rmdir("./524" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11238] <... openat resumed>) = 3 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] umount2("./513", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./511", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] mkdir("./525", 0777) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 5046] umount2("./508/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./497/cgroup.net", [pid 11238] write(3, "1000", 4 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] openat(AT_FDCWD, "./513", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11238] <... write resumed>) = 4 [pid 5049] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(3, "", [pid 5046] newfstatat(AT_FDCWD, "./508/cgroup.cpu", [pid 5045] unlink("./497/cgroup.net" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11239 attached [pid 11238] close(3 [pid 5049] getdents64(3, [pid 5046] unlink("./508/cgroup.cpu" [pid 5045] getdents64(3, [pid 11239] set_robust_list(0x555556ac56a0, 24 [pid 11238] <... close resumed>) = 0 ./strace-static-x86_64: Process 11240 attached [pid 11238] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1052 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11239] <... set_robust_list resumed>) = 0 [pid 11239] chdir("./525" [pid 5049] umount2("./513/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11238] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 11239] <... chdir resumed>) = 0 [pid 11238] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./513/cgroup.cpu", [pid 5046] umount2("./508/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11240] set_robust_list(0x555556ac56a0, 24 [pid 11239] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11238] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1024 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./497" [pid 11240] <... set_robust_list resumed>) = 0 [pid 11239] <... prctl resumed>) = 0 [pid 11238] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] unlink("./513/cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./508/binderfs", [pid 11240] chdir("./511" [pid 11239] setpgid(0, 0 [pid 11238] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11240] <... chdir resumed>) = 0 [pid 11239] <... setpgid resumed>) = 0 [pid 11238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11239] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11238] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./513/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./508/binderfs" [pid 5045] mkdir("./498", 0777 [pid 11240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11240] setpgid(0, 0 [pid 11238] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./513/binderfs", [pid 11240] <... setpgid resumed>) = 0 [pid 11238] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./508/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11240] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11238] <... mprotect resumed>) = 0 [pid 5049] unlink("./513/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11238] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./508/cgroup", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11239] <... symlink resumed>) = 0 [pid 11238] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11240] <... symlink resumed>) = 0 [pid 11239] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./513/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./508/cgroup"./strace-static-x86_64: Process 11241 attached [pid 11240] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11239] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11242 attached [pid 11241] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... unlink resumed>) = 0 [pid 11242] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11241] <... set_robust_list resumed>) = 0 [pid 11239] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11238] <... clone3 resumed> => {parent_tid=[1052]}, 88) = 1052 [pid 5049] newfstatat(AT_FDCWD, "./513/cgroup", [pid 5046] umount2("./508/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11242] <... rseq resumed>) = 0 [pid 11239] <... symlink resumed>) = 0 [pid 11238] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 998 [pid 11241] chdir("./498" [pid 11240] <... symlink resumed>) = 0 [pid 11239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11238] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11240] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11242] set_robust_list(0x7f504ff7f9a0, 24 [pid 11241] <... chdir resumed>) = 0 [pid 5049] unlink("./513/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11242] <... set_robust_list resumed>) = 0 [pid 11240] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./508/blkio.bfq.io_wait_time_recursive", [pid 11242] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./513/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11241] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11239] <... openat resumed>) = 3 [pid 11238] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./508/blkio.bfq.io_wait_time_recursive" [pid 11242] open(".", O_RDONLY [pid 11241] <... prctl resumed>) = 0 [pid 11239] write(3, "1000", 4 [pid 11238] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./513/blkio.bfq.io_wait_time_recursive", [pid 5046] <... unlink resumed>) = 0 [pid 11242] <... open resumed>) = 3 [pid 11241] setpgid(0, 0 [pid 11240] <... openat resumed>) = 3 [pid 11239] <... write resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11242] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11241] <... setpgid resumed>) = 0 [pid 11239] close(3 [pid 5049] unlink("./513/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./508/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11242] <... futex resumed>) = 1 [pid 11241] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11240] write(3, "1000", 4 [pid 11239] <... close resumed>) = 0 [pid 11238] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11242] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11240] <... write resumed>) = 4 [pid 11238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11242] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11238] <... futex resumed>) = 0 [pid 11242] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11239] symlink("/dev/binderfs", "./binderfs" [pid 11240] close(3 [pid 11238] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./513/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./508/cgroup.net", [pid 11242] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11240] <... close resumed>) = 0 [pid 11238] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11242] <... futex resumed>) = 0 [pid 11241] <... symlink resumed>) = 0 [pid 11240] symlink("/dev/binderfs", "./binderfs" [pid 11239] <... symlink resumed>) = 0 [pid 11238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./513/cgroup.net", [pid 5046] unlink("./508/cgroup.net" [pid 11242] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11240] <... symlink resumed>) = 0 [pid 11239] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11238] <... futex resumed>) = 0 [pid 11241] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11240] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11239] <... futex resumed>) = 0 [pid 11239] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11240] <... futex resumed>) = 0 [pid 11239] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11240] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11239] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] unlink("./513/cgroup.net" [pid 5046] getdents64(3, [pid 11241] <... symlink resumed>) = 0 [pid 11240] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11239] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 11242] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11239] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11238] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 11241] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11238] <... futex resumed>) = ? [pid 5046] rmdir("./508" [pid 11242] +++ killed by SIGIO +++ [pid 11241] <... symlink resumed>) = 0 [pid 11240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11239] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] close(3 [pid 5046] <... rmdir resumed>) = 0 [pid 11241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11240] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... close resumed>) = 0 [pid 11240] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11239] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11238] +++ killed by SIGIO +++ [pid 5049] rmdir("./513" [pid 5046] mkdir("./509", 0777 [pid 11241] <... openat resumed>) = 3 [pid 11240] <... mprotect resumed>) = 0 [pid 11239] <... mprotect resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1051, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... rmdir resumed>) = 0 [pid 11241] write(3, "1000", 4 [pid 11240] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... mkdir resumed>) = 0 [pid 11241] <... write resumed>) = 4 [pid 11240] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11241] close(3 [pid 11240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11241] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11243 attached [pid 11239] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... openat resumed>) = 3 [pid 5049] mkdir("./514", 0777 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11243] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11239] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11241] symlink("/dev/binderfs", "./binderfs" [pid 11240] <... clone3 resumed> => {parent_tid=[1025]}, 88) = 1025 [pid 5050] newfstatat(3, "", [pid 11241] <... symlink resumed>) = 0 [pid 11240] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 11241] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11240] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11241] <... futex resumed>) = 0 [pid 11240] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... mkdir resumed>) = 0 [pid 11239] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11243] <... rseq resumed>) = 0 [pid 11241] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11240] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11243] set_robust_list(0x7f504ff7f9a0, 24./strace-static-x86_64: Process 11244 attached [pid 11241] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11243] <... set_robust_list resumed>) = 0 [pid 11244] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11243] rt_sigprocmask(SIG_SETMASK, [], [pid 11241] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11239] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11245 attached [pid 11244] <... rseq resumed>) = 0 [pid 11243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11241] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11239] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./524/cgroup.cpu", [pid 11245] set_robust_list(0x555556ac56a0, 24 [pid 11244] set_robust_list(0x7f504ff7f9a0, 24 [pid 11243] open(".", O_RDONLY [pid 11241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11239] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11245] <... set_robust_list resumed>) = 0 [pid 11244] <... set_robust_list resumed>) = 0 [pid 11243] <... open resumed>) = 3 [pid 11241] <... mmap resumed>) = 0x7f504ff5f000 [pid 11239] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11245] chdir("./509" [pid 11244] rt_sigprocmask(SIG_SETMASK, [], [pid 11239] <... futex resumed>) = 0 [pid 5050] unlink("./524/cgroup.cpu" [pid 11244] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11243] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11241] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11239] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1020 [pid 11245] <... chdir resumed>) = 0 [pid 11244] open(".", O_RDONLY [pid 11241] <... mprotect resumed>) = 0 [pid 11244] <... open resumed>) = 3 [pid 11243] <... futex resumed>) = 1 [pid 11240] <... futex resumed>) = 0 [pid 11245] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11244] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11241] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11246 attached [pid 11245] <... prctl resumed>) = 0 [pid 11243] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11240] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11246] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1030 [pid 11246] <... set_robust_list resumed>) = 0 [pid 11243] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11240] <... futex resumed>) = 0 [pid 11243] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11240] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11246] chdir("./514" [pid 11245] setpgid(0, 0 [pid 11244] <... futex resumed>) = 1 [pid 11243] <... fcntl resumed>) = 0 [pid 11241] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11239] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11246] <... chdir resumed>) = 0 [pid 11245] <... setpgid resumed>) = 0 [pid 11244] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11243] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11241] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11239] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./524/binderfs", [pid 11246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11245] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11243] <... futex resumed>) = 1 [pid 11240] <... futex resumed>) = 0 [pid 11239] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11247 attached [pid 11246] <... prctl resumed>) = 0 [pid 11244] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11243] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11240] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11239] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./524/binderfs" [pid 11244] <... fcntl resumed>) = 0 [pid 11245] <... symlink resumed>) = 0 [pid 11244] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11245] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11244] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11247] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11246] setpgid(0, 0 [pid 11245] <... symlink resumed>) = 0 [pid 11243] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11241] <... clone3 resumed> => {parent_tid=[999]}, 88) = 999 [pid 11240] <... futex resumed>) = 0 [pid 11239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11247] <... rseq resumed>) = 0 [pid 11246] <... setpgid resumed>) = 0 [pid 11243] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11241] rt_sigprocmask(SIG_SETMASK, [], [pid 11240] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11239] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 11247] set_robust_list(0x7f504ff7f9a0, 24 [pid 11246] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11241] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11247] <... set_robust_list resumed>) = 0 [pid 11241] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11247] rt_sigprocmask(SIG_SETMASK, [], [pid 11245] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11244] <... futex resumed>) = 0 [pid 11239] <... futex resumed>) = 1 [pid 5050] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11247] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11246] <... symlink resumed>) = 0 [pid 11245] <... symlink resumed>) = 0 [pid 11244] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11241] <... futex resumed>) = 0 [pid 11239] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11247] open(".", O_RDONLY [pid 11246] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11244] <... openat resumed>) = 4 [pid 11243] <... openat resumed>) = 4 [pid 11241] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./524/cgroup", [pid 11247] <... open resumed>) = 3 [pid 11244] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11239] <... futex resumed>) = ? [pid 11247] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11246] <... symlink resumed>) = 0 [pid 11245] <... openat resumed>) = 3 [pid 11243] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./524/cgroup" [pid 11247] <... futex resumed>) = 1 [pid 11246] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11241] <... futex resumed>) = 0 [pid 11240] <... futex resumed>) = ? [pid 11247] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11246] <... symlink resumed>) = 0 [pid 11245] write(3, "1000", 4 [pid 11241] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 11247] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11247] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11245] <... write resumed>) = 4 [pid 11244] +++ killed by SIGIO +++ [pid 11241] <... futex resumed>) = 0 [pid 11239] +++ killed by SIGIO +++ [pid 5050] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11247] <... fcntl resumed>) = 0 [pid 11246] <... openat resumed>) = 3 [pid 11245] close(3 [pid 11241] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11245] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11245] symlink("/dev/binderfs", "./binderfs" [pid 11247] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11246] write(3, "1000", 4 [pid 11241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11245] <... symlink resumed>) = 0 [pid 11247] <... futex resumed>) = 0 [pid 11246] <... write resumed>) = 4 [pid 11241] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 11247] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11246] close(3 [pid 11241] <... futex resumed>) = 0 [pid 11247] <... openat resumed>) = 4 [pid 11245] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11243] +++ killed by SIGIO +++ [pid 11240] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11246] <... close resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1052, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 11245] <... futex resumed>) = 0 [pid 11246] symlink("/dev/binderfs", "./binderfs" [pid 11247] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11245] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11241] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1024, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11247] <... futex resumed>) = ? [pid 11246] <... symlink resumed>) = 0 [pid 11245] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 11247] +++ killed by SIGIO +++ [pid 11245] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11245] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11246] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... openat resumed>) = 3 [pid 11246] <... futex resumed>) = 0 [pid 11245] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(3, "", [pid 5050] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 5047] umount2("./511", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11246] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11245] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11246] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11245] <... mprotect resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] unlink("./524/cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11246] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11245] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11245] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./511", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11246] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5047] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11248 attached [pid 11246] <... mprotect resumed>) = 0 [pid 11241] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(3, "", [pid 11248] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11246] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11245] <... clone3 resumed> => {parent_tid=[1021]}, 88) = 1021 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11248] <... rseq resumed>) = 0 [pid 11246] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] getdents64(3, [pid 5051] unlink("./525/cgroup.cpu" [pid 5050] <... close resumed>) = 0 [pid 11248] set_robust_list(0x7f504ff7f9a0, 24 [pid 11245] rt_sigprocmask(SIG_SETMASK, [], [pid 11246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11248] <... set_robust_list resumed>) = 0 [pid 11245] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] rmdir("./524" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=998, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 11249 attached [pid 11248] rt_sigprocmask(SIG_SETMASK, [], [pid 11245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./498", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11246] <... clone3 resumed> => {parent_tid=[1031]}, 88) = 1031 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11249] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11248] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11246] rt_sigprocmask(SIG_SETMASK, [], [pid 11245] <... futex resumed>) = 0 [pid 5051] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./511/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./498", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11249] <... rseq resumed>) = 0 [pid 11248] open(".", O_RDONLY [pid 11246] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11249] set_robust_list(0x7f504ff7f9a0, 24 [pid 11248] <... open resumed>) = 3 [pid 11246] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11245] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] mkdir("./525", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 11249] <... set_robust_list resumed>) = 0 [pid 11248] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11246] <... futex resumed>) = 0 [pid 11245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./525/binderfs", [pid 11249] rt_sigprocmask(SIG_SETMASK, [], [pid 11248] <... futex resumed>) = 0 [pid 11246] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 11249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11248] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11245] <... futex resumed>) = 0 [pid 11249] open(".", O_RDONLY [pid 11248] <... fcntl resumed>) = 0 [pid 11245] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./525/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11249] <... open resumed>) = 3 [pid 11248] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] getdents64(3, [pid 11249] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11248] <... futex resumed>) = 0 [pid 11245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./511/cgroup.cpu", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11249] <... futex resumed>) = 1 [pid 11248] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11246] <... futex resumed>) = 0 [pid 11245] <... futex resumed>) = 0 [pid 5051] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11249] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11246] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./498/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11248] <... openat resumed>) = 4 [pid 11246] <... futex resumed>) = 0 [pid 11245] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./511/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11249] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11246] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./525/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./498/cgroup.cpu", [pid 11249] <... fcntl resumed>) = 0 [pid 11248] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11249] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./498/cgroup.cpu" [pid 11249] <... futex resumed>) = 1 [pid 11246] <... futex resumed>) = 0 [pid 5047] umount2("./511/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11250 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1053 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11249] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11246] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./525/cgroup" [pid 11249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11246] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./498/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11249] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11246] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11249] <... openat resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./511/binderfs", [pid 5051] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 5045] newfstatat(AT_FDCWD, "./498/binderfs", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11250] set_robust_list(0x555556ac56a0, 24 [pid 5047] unlink("./511/binderfs" [pid 11249] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11246] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./525/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./498/binderfs" [pid 11250] <... set_robust_list resumed>) = 0 [pid 11245] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] umount2("./511/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./498/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11250] chdir("./525" [pid 5051] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./511/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./498/cgroup", [pid 11250] <... chdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 5047] unlink("./511/cgroup" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1020, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11250] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./525/cgroup.net" [pid 5045] unlink("./498/cgroup" [pid 11250] <... prctl resumed>) = 0 [pid 11249] +++ killed by SIGIO +++ [pid 11246] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11250] setpgid(0, 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1030, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] rmdir("./525" [pid 11250] <... setpgid resumed>) = 0 [pid 5047] umount2("./511/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./509", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11250] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] umount2("./498/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11250] <... symlink resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11250] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] mkdir("./526", 0777 [pid 5047] newfstatat(AT_FDCWD, "./511/blkio.bfq.io_wait_time_recursive", [pid 5046] openat(AT_FDCWD, "./509", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11250] <... symlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] umount2("./514", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./498/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11250] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./511/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11250] <... symlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./514", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./498/blkio.bfq.io_wait_time_recursive" [pid 5049] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] newfstatat(3, "", [pid 11250] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./498/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./509/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11250] write(3, "1000", 4 [pid 5047] umount2("./511/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11251 attached [pid 11250] <... write resumed>) = 4 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./509/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./498/cgroup.net", [pid 11251] set_robust_list(0x555556ac56a0, 24 [pid 11250] close(3 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1054 [pid 5049] umount2("./514/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./511/cgroup.net", [pid 11251] <... set_robust_list resumed>) = 0 [pid 11250] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11251] chdir("./526" [pid 11250] symlink("/dev/binderfs", "./binderfs" [pid 11251] <... chdir resumed>) = 0 [pid 11250] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./514/cgroup.cpu", [pid 5047] unlink("./511/cgroup.net") = 0 [pid 11251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11251] <... prctl resumed>) = 0 [pid 11250] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./514/cgroup.cpu" [pid 5047] getdents64(3, [pid 11251] setpgid(0, 0 [pid 11250] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./509/cgroup.cpu" [pid 5045] unlink("./498/cgroup.net" [pid 11251] <... setpgid resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11250] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] umount2("./509/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11251] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 5049] umount2("./514/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11250] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] close(3 [pid 11250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5047] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./509/binderfs", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11251] <... symlink resumed>) = 0 [pid 11250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] rmdir("./511" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3 [pid 11250] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./514/binderfs", [pid 5046] unlink("./509/binderfs" [pid 5045] <... close resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] rmdir("./498" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./514/binderfs" [pid 11250] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11251] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] mkdir("./512", 0777 [pid 11251] <... symlink resumed>) = 0 [pid 5046] umount2("./509/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 11250] <... mprotect resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./509/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./509/cgroup" [pid 5045] mkdir("./499", 0777 [pid 11251] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11250] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./514/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5046] umount2("./509/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11251] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./509/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11250] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./509/blkio.bfq.io_wait_time_recursive" [pid 11250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./514/cgroup", ./strace-static-x86_64: Process 11253 attached ./strace-static-x86_64: Process 11252 attached [pid 11251] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11253] set_robust_list(0x555556ac56a0, 24 [pid 11252] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11251] write(3, "1000", 4 [pid 5049] unlink("./514/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 11253] <... set_robust_list resumed>) = 0 [pid 11252] <... rseq resumed>) = 0 [pid 11251] <... write resumed>) = 4 [pid 11250] <... clone3 resumed> => {parent_tid=[1054]}, 88) = 1054 [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./509/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1000 [pid 11250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./509/cgroup.net", [pid 11251] close(3 [pid 11250] <... futex resumed>) = 0 [pid 5049] umount2("./514/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11251] <... close resumed>) = 0 [pid 5046] unlink("./509/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./514/blkio.bfq.io_wait_time_recursive", [pid 11253] chdir("./499" [pid 11252] set_robust_list(0x7f504ff7f9a0, 24 [pid 11251] symlink("/dev/binderfs", "./binderfs" [pid 11250] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11254 attached [pid 11253] <... chdir resumed>) = 0 [pid 11252] <... set_robust_list resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1026 [pid 5046] getdents64(3, [pid 11251] <... symlink resumed>) = 0 [pid 11254] set_robust_list(0x555556ac56a0, 24 [pid 11253] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11252] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] unlink("./514/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11254] <... set_robust_list resumed>) = 0 [pid 11253] <... prctl resumed>) = 0 [pid 11252] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11251] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5046] close(3 [pid 11254] chdir("./512" [pid 11252] open(".", O_RDONLY [pid 11251] <... futex resumed>) = 0 [pid 11251] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11254] <... chdir resumed>) = 0 [pid 11252] <... open resumed>) = 3 [pid 11251] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./514/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11253] setpgid(0, 0 [pid 5046] <... close resumed>) = 0 [pid 11254] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11253] <... setpgid resumed>) = 0 [pid 11252] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11251] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11254] <... prctl resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./514/cgroup.net", [pid 5046] rmdir("./509" [pid 11254] setpgid(0, 0 [pid 11252] <... futex resumed>) = 1 [pid 11251] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11250] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11254] <... setpgid resumed>) = 0 [pid 11253] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11252] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11251] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./514/cgroup.net" [pid 11254] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11253] <... symlink resumed>) = 0 [pid 11252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11251] <... mmap resumed>) = 0x7f504ff5f000 [pid 11250] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11253] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11252] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11251] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11250] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] mkdir("./510", 0777 [pid 11254] <... symlink resumed>) = 0 [pid 11253] <... symlink resumed>) = 0 [pid 11252] <... fcntl resumed>) = 0 [pid 11251] <... mprotect resumed>) = 0 [pid 5049] getdents64(3, [pid 11254] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11252] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11251] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11250] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... mkdir resumed>) = 0 [pid 11253] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11252] <... futex resumed>) = 0 [pid 11251] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11254] <... symlink resumed>) = 0 [pid 11253] <... symlink resumed>) = 0 [pid 11252] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11251] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11252] <... openat resumed>) = 4 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11254] <... symlink resumed>) = 0 [pid 11253] <... openat resumed>) = 3 [pid 11251] <... clone3 resumed> => {parent_tid=[1055]}, 88) = 1055 [pid 11250] <... futex resumed>) = 0 [pid 5049] close(3 [pid 11252] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11251] rt_sigprocmask(SIG_SETMASK, [], [pid 11253] write(3, "1000", 4 [pid 11251] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11253] <... write resumed>) = 4 [pid 11252] +++ killed by SIGIO +++ [pid 11251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11253] close(3 [pid 11251] <... futex resumed>) = 0 [pid 11253] <... close resumed>) = 0 [pid 11251] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11253] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 11256 attached ./strace-static-x86_64: Process 11255 attached ) = 0 [pid 5049] <... close resumed>) = 0 [pid 11255] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11256] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11256] chdir("./510" [pid 11253] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] rmdir("./514" [pid 11253] <... futex resumed>) = 0 [pid 11256] <... chdir resumed>) = 0 [pid 11254] <... openat resumed>) = 3 [pid 11253] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11253] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11256] <... prctl resumed>) = 0 [pid 11253] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11256] setpgid(0, 0 [pid 11253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11256] <... setpgid resumed>) = 0 [pid 11253] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11256] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11255] <... rseq resumed>) = 0 [pid 11254] write(3, "1000", 4 [pid 11253] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] mkdir("./515", 0777 [pid 11253] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11253] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11256] <... symlink resumed>) = 0 [pid 11253] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11254] <... write resumed>) = 4 [pid 11255] set_robust_list(0x7f504ff7f9a0, 24 [pid 11253] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11254] close(3 [pid 11255] <... set_robust_list resumed>) = 0 [pid 11254] <... close resumed>) = 0 ./strace-static-x86_64: Process 11257 attached [pid 11256] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11255] rt_sigprocmask(SIG_SETMASK, [], [pid 11253] <... clone3 resumed> => {parent_tid=[1001]}, 88) = 1001 [pid 11250] +++ killed by SIGIO +++ [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11257] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11256] <... symlink resumed>) = 0 [pid 11255] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11254] symlink("/dev/binderfs", "./binderfs" [pid 11253] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1022 [pid 11257] <... rseq resumed>) = 0 [pid 11255] open(".", O_RDONLY [pid 11253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1053, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11257] set_robust_list(0x7f504ff7f9a0, 24 [pid 11256] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11254] <... symlink resumed>) = 0 [pid 11253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11257] <... set_robust_list resumed>) = 0 [pid 11256] <... symlink resumed>) = 0 [pid 11255] <... open resumed>) = 3 [pid 11254] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11253] <... futex resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 11257] rt_sigprocmask(SIG_SETMASK, [], [pid 11255] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] <... futex resumed>) = 0 [pid 11253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11257] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11255] <... futex resumed>) = 1 [pid 11254] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11251] <... futex resumed>) = 0 [pid 11257] open(".", O_RDONLY [pid 11256] <... openat resumed>) = 3 [pid 11255] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11254] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 11258 attached [pid 11257] <... open resumed>) = 3 [pid 11255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11256] write(3, "1000", 4 [pid 11254] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11251] <... futex resumed>) = 0 [pid 5050] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11257] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11256] <... write resumed>) = 4 [pid 11255] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11251] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11257] <... futex resumed>) = 1 [pid 11256] close(3 [pid 11253] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1032 [pid 11258] set_robust_list(0x555556ac56a0, 24 [pid 11257] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11256] <... close resumed>) = 0 [pid 11255] <... fcntl resumed>) = 0 [pid 11254] <... mmap resumed>) = 0x7f504ff5f000 [pid 11253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... openat resumed>) = 3 [pid 11258] <... set_robust_list resumed>) = 0 [pid 11257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11256] symlink("/dev/binderfs", "./binderfs" [pid 11255] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11253] <... futex resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 11258] chdir("./515" [pid 11257] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11256] <... symlink resumed>) = 0 [pid 11255] <... futex resumed>) = 1 [pid 11254] <... mprotect resumed>) = 0 [pid 11253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11251] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11258] <... chdir resumed>) = 0 [pid 11257] <... fcntl resumed>) = 0 [pid 11256] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11255] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11254] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11258] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11257] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11256] <... futex resumed>) = 0 [pid 11255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11254] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11258] <... prctl resumed>) = 0 [pid 11257] <... futex resumed>) = 1 [pid 11256] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11255] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11253] <... futex resumed>) = 0 [pid 11258] setpgid(0, 0 [pid 11257] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11256] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11251] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11259 attached [pid 11258] <... setpgid resumed>) = 0 [pid 11257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11255] <... openat resumed>) = 4 [pid 11254] <... clone3 resumed> => {parent_tid=[1027]}, 88) = 1027 [pid 11253] <... futex resumed>) = 0 [pid 11251] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11259] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11258] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11257] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11256] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11259] <... rseq resumed>) = 0 [pid 11258] <... symlink resumed>) = 0 [pid 11256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11254] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 11259] set_robust_list(0x7f504ff7f9a0, 24 [pid 11257] <... openat resumed>) = 4 [pid 11259] <... set_robust_list resumed>) = 0 [pid 11254] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11259] rt_sigprocmask(SIG_SETMASK, [], [pid 11258] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11259] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11258] <... symlink resumed>) = 0 [pid 11254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11259] open(".", O_RDONLY [pid 11257] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11256] <... mmap resumed>) = 0x7f504ff5f000 [pid 11254] <... futex resumed>) = 0 [pid 11253] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11258] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11259] <... open resumed>) = 3 [pid 11256] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./525/cgroup.cpu" [pid 11259] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11258] <... symlink resumed>) = 0 [pid 11257] +++ killed by SIGIO +++ [pid 11256] <... mprotect resumed>) = 0 [pid 11255] +++ killed by SIGIO +++ [pid 11254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11251] +++ killed by SIGIO +++ [pid 11259] <... futex resumed>) = 0 [pid 11258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1054, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11259] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11258] <... openat resumed>) = 3 [pid 11259] <... fcntl resumed>) = 0 [pid 11254] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11259] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11256] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11258] write(3, "1000", 4 [pid 11253] +++ killed by SIGIO +++ [pid 5050] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11259] <... futex resumed>) = 0 [pid 11254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./525/binderfs", [pid 11258] <... write resumed>) = 4 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1000, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11256] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11259] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11258] close(3 [pid 11256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11254] <... futex resumed>) = 0 [pid 5051] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11259] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11258] <... close resumed>) = 0 [pid 11254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./525/binderfs"./strace-static-x86_64: Process 11260 attached [pid 11259] <... openat resumed>) = 4 [pid 11258] symlink("/dev/binderfs", "./binderfs" [pid 11256] <... clone3 resumed> => {parent_tid=[1023]}, 88) = 1023 [pid 11254] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... unlink resumed>) = 0 [pid 11260] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11259] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11254] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11260] <... rseq resumed>) = 0 [pid 11258] <... symlink resumed>) = 0 [pid 11256] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... openat resumed>) = 3 [pid 5050] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11260] set_robust_list(0x7f504ff7f9a0, 24 [pid 11258] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11260] <... set_robust_list resumed>) = 0 [pid 11258] <... futex resumed>) = 0 [pid 11256] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(3, "", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./499", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11260] rt_sigprocmask(SIG_SETMASK, [], [pid 11259] +++ killed by SIGIO +++ [pid 11258] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11254] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./525/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11260] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11258] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11256] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] openat(AT_FDCWD, "./499", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11260] open(".", O_RDONLY [pid 11258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11256] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1026, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... openat resumed>) = 3 [pid 11260] <... open resumed>) = 3 [pid 11258] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5045] newfstatat(3, "", [pid 5050] unlink("./525/cgroup" [pid 11260] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11260] <... futex resumed>) = 1 [pid 11256] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11260] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11258] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 [pid 11260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11260] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11256] <... futex resumed>) = 0 [pid 5045] getdents64(3, [pid 11260] <... fcntl resumed>) = 0 [pid 11258] <... mprotect resumed>) = 0 [pid 11256] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./512", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11260] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11258] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11260] <... futex resumed>) = 0 [pid 11258] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./526/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11260] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11256] <... futex resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./512", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./499/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11261 attached [pid 11260] <... openat resumed>) = 4 [pid 11256] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11261] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11260] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11258] <... clone3 resumed> => {parent_tid=[1033]}, 88) = 1033 [pid 11261] <... rseq resumed>) = 0 [pid 11260] <... futex resumed>) = ? [pid 11261] set_robust_list(0x7f504ff7f9a0, 24 [pid 11260] +++ killed by SIGIO +++ [pid 11258] rt_sigprocmask(SIG_SETMASK, [], [pid 11256] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./525/blkio.bfq.io_wait_time_recursive" [pid 5047] newfstatat(3, "", [pid 5045] newfstatat(AT_FDCWD, "./499/cgroup.cpu", [pid 11261] <... set_robust_list resumed>) = 0 [pid 11258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11258] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11261] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11258] <... futex resumed>) = 0 [pid 11261] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./526/binderfs", [pid 5050] <... unlink resumed>) = 0 [pid 11258] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11261] <... open resumed>) = 3 [pid 5047] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./512/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./499/cgroup.cpu" [pid 5051] unlink("./526/binderfs" [pid 5050] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./512/cgroup.cpu", [pid 11261] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11261] <... futex resumed>) = 1 [pid 11258] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11261] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11258] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./512/cgroup.cpu" [pid 11261] <... fcntl resumed>) = 0 [pid 11258] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1022, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11261] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11258] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11261] <... futex resumed>) = 0 [pid 11258] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] umount2("./510", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11261] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11258] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./512/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11261] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11258] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11261] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11258] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11261] <... openat resumed>) = 4 [pid 5051] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 5047] newfstatat(AT_FDCWD, "./512/binderfs", [pid 5046] openat(AT_FDCWD, "./510", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./499/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5047] unlink("./512/binderfs" [pid 5046] newfstatat(3, "", [pid 11258] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11261] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11258] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./512/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./499/binderfs", [pid 5050] unlink("./525/cgroup.net" [pid 11261] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11261] +++ killed by SIGIO +++ [pid 11258] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./526/cgroup", [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./512/cgroup", [pid 5046] umount2("./510/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./499/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./512/cgroup") = 0 [pid 5046] newfstatat(AT_FDCWD, "./510/cgroup.cpu", [pid 5050] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./499/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./526/cgroup" [pid 5050] close(3 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1032, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] umount2("./512/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./510/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./499/cgroup", [pid 5050] rmdir("./525" [pid 5051] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./512/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./512/blkio.bfq.io_wait_time_recursive" [pid 5051] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./515", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./499/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] umount2("./512/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./512/cgroup.net", [pid 5051] <... unlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./515", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./499/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... openat resumed>) = 3 [pid 5047] unlink("./512/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./499/blkio.bfq.io_wait_time_recursive", [pid 5051] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(3, "", [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./499/blkio.bfq.io_wait_time_recursive" [pid 5051] newfstatat(AT_FDCWD, "./526/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5051] unlink("./526/cgroup.net" [pid 5049] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./499/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./515/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./515/cgroup.cpu", [pid 5051] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5049] unlink("./515/cgroup.cpu" [pid 5051] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] rmdir("./526" [pid 5045] newfstatat(AT_FDCWD, "./499/cgroup.net", [pid 5049] umount2("./515/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./499/cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./515/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./515/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./515/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./515/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./515/cgroup" [pid 5047] rmdir("./512" [pid 5045] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./515/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./515/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./515/blkio.bfq.io_wait_time_recursive") = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./515/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./515/cgroup.net", [pid 5045] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./515/cgroup.net" [pid 5045] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] rmdir("./499" [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./515" [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] mkdir("./527", 0777) = 0 [pid 5050] mkdir("./526", 0777 [pid 5047] mkdir("./513", 0777 [pid 5046] umount2("./510/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./500", 0777 [pid 5049] mkdir("./516", 0777 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./510/binderfs", [pid 5045] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./510/binderfs"./strace-static-x86_64: Process 11262 attached [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1056 [pid 11262] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11262] chdir("./527") = 0 [pid 11262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11262] setpgid(0, 0) = 0 [pid 11262] symlink("/syzcgroup/unified/syz5", "./cgroup") = 0 [pid 11262] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 11262] symlink("/syzcgroup/net/syz5", "./cgroup.net") = 0 [pid 11262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11262] write(3, "1000", 4) = 4 [pid 11262] close(3) = 0 [pid 11262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11262] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11262] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11262] <... mmap resumed>) = 0x7f504ff5f000 [pid 11262] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 11263 attached ) = 0 [pid 11262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11264 attached [pid 11263] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1034 [pid 5046] umount2("./510/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1002 [pid 11263] <... set_robust_list resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11267 attached [pid 11264] set_robust_list(0x555556ac56a0, 24 [pid 11262] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 ./strace-static-x86_64: Process 11265 attached ./strace-static-x86_64: Process 11266 attached [pid 11267] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11264] <... set_robust_list resumed>) = 0 [pid 11263] chdir("./500" [pid 11262] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./510/cgroup", [pid 11267] <... rseq resumed>) = 0 [pid 11265] set_robust_list(0x555556ac56a0, 24 [pid 11264] chdir("./516" [pid 11262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11267] set_robust_list(0x7f504ff7f9a0, 24 [pid 11266] set_robust_list(0x555556ac56a0, 24 [pid 11265] <... set_robust_list resumed>) = 0 [pid 11264] <... chdir resumed>) = 0 [pid 11263] <... chdir resumed>) = 0 [pid 11262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1055 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1028 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11267] <... set_robust_list resumed>) = 0 [pid 11266] <... set_robust_list resumed>) = 0 [pid 11265] chdir("./526" [pid 11264] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11263] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11262] <... futex resumed>) = 0 [pid 5046] unlink("./510/cgroup" [pid 11267] rt_sigprocmask(SIG_SETMASK, [], [pid 11266] chdir("./513" [pid 11265] <... chdir resumed>) = 0 [pid 11264] <... prctl resumed>) = 0 [pid 11263] <... prctl resumed>) = 0 [pid 11262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11267] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11265] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11264] setpgid(0, 0 [pid 11263] setpgid(0, 0 [pid 5046] <... unlink resumed>) = 0 [pid 11267] open(".", O_RDONLY [pid 11266] <... chdir resumed>) = 0 [pid 11265] <... prctl resumed>) = 0 [pid 11263] <... setpgid resumed>) = 0 [pid 5046] umount2("./510/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11267] <... open resumed>) = 3 [pid 11266] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11265] setpgid(0, 0 [pid 11264] <... setpgid resumed>) = 0 [pid 11267] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11266] <... prctl resumed>) = 0 [pid 11265] <... setpgid resumed>) = 0 [pid 11264] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11263] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11267] <... futex resumed>) = 1 [pid 11266] setpgid(0, 0 [pid 11265] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11264] <... symlink resumed>) = 0 [pid 11262] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./510/blkio.bfq.io_wait_time_recursive", [pid 11267] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11266] <... setpgid resumed>) = 0 [pid 11265] <... symlink resumed>) = 0 [pid 11264] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11263] <... symlink resumed>) = 0 [pid 11262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11266] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11265] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11264] <... symlink resumed>) = 0 [pid 11263] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11262] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11267] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11266] <... symlink resumed>) = 0 [pid 11265] <... symlink resumed>) = 0 [pid 11264] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11267] <... fcntl resumed>) = 0 [pid 11266] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11263] <... symlink resumed>) = 0 [pid 11265] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5046] unlink("./510/blkio.bfq.io_wait_time_recursive" [pid 11267] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11266] <... symlink resumed>) = 0 [pid 11264] <... symlink resumed>) = 0 [pid 11263] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11267] <... futex resumed>) = 1 [pid 11265] <... symlink resumed>) = 0 [pid 11263] <... symlink resumed>) = 0 [pid 11262] <... futex resumed>) = 0 [pid 11264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... unlink resumed>) = 0 [pid 11267] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11266] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] umount2("./510/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11266] <... symlink resumed>) = 0 [pid 11265] <... openat resumed>) = 3 [pid 11264] <... openat resumed>) = 3 [pid 11262] <... futex resumed>) = 0 [pid 11267] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11265] write(3, "1000", 4 [pid 11264] write(3, "1000", 4 [pid 11263] <... openat resumed>) = 3 [pid 11262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11265] <... write resumed>) = 4 [pid 11262] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11265] close(3 [pid 11267] <... openat resumed>) = 4 [pid 11262] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11265] <... close resumed>) = 0 [pid 11265] symlink("/dev/binderfs", "./binderfs" [pid 11267] +++ killed by SIGIO +++ [pid 11266] <... openat resumed>) = 3 [pid 11264] <... write resumed>) = 4 [pid 11263] write(3, "1000", 4 [pid 5046] newfstatat(AT_FDCWD, "./510/cgroup.net", [pid 11266] write(3, "1000", 4 [pid 11265] <... symlink resumed>) = 0 [pid 11264] close(3 [pid 11263] <... write resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11266] <... write resumed>) = 4 [pid 11265] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11264] <... close resumed>) = 0 [pid 11263] close(3 [pid 11262] +++ killed by SIGIO +++ [pid 5046] unlink("./510/cgroup.net" [pid 11266] close(3 [pid 11265] <... futex resumed>) = 0 [pid 11264] symlink("/dev/binderfs", "./binderfs" [pid 11263] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11266] <... close resumed>) = 0 [pid 11265] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11263] symlink("/dev/binderfs", "./binderfs" [pid 11265] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11265] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1056, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11265] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11263] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11266] symlink("/dev/binderfs", "./binderfs" [pid 11265] <... mmap resumed>) = 0x7f504ff5f000 [pid 11264] <... symlink resumed>) = 0 [pid 5046] getdents64(3, [pid 11265] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11266] <... symlink resumed>) = 0 [pid 11265] <... mprotect resumed>) = 0 [pid 11263] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11265] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11265] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 11265] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11268 attached [pid 11265] <... clone3 resumed> => {parent_tid=[1056]}, 88) = 1056 [pid 11268] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11265] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11268] <... rseq resumed>) = 0 [pid 11265] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11268] set_robust_list(0x7f504ff7f9a0, 24 [pid 11265] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11268] <... set_robust_list resumed>) = 0 [pid 11265] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 11268] rt_sigprocmask(SIG_SETMASK, [], [pid 11265] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11264] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11263] <... futex resumed>) = 0 [pid 5046] close(3 [pid 11266] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11264] <... futex resumed>) = 0 [pid 11263] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11268] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11266] <... futex resumed>) = 0 [pid 11264] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11263] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... close resumed>) = 0 [pid 11268] open(".", O_RDONLY [pid 11266] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11264] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11263] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] unlink("./527/cgroup.cpu" [pid 5046] rmdir("./510" [pid 11268] <... open resumed>) = 3 [pid 11266] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11268] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11263] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11268] <... futex resumed>) = 1 [pid 11265] <... futex resumed>) = 0 [pid 11263] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11264] <... mmap resumed>) = 0x7f504ff5f000 [pid 11268] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11266] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11265] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11264] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11263] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11265] <... futex resumed>) = 0 [pid 11264] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./527/binderfs", [pid 11268] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11266] <... mmap resumed>) = 0x7f504ff5f000 [pid 11265] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11263] <... mprotect resumed>) = 0 [pid 11268] <... fcntl resumed>) = 0 [pid 11264] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11268] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11263] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./527/binderfs" [pid 11268] <... futex resumed>) = 1 [pid 11266] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11265] <... futex resumed>) = 0 [pid 11264] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11263] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11268] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11266] <... mprotect resumed>) = 0 [pid 11265] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11263] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 11268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11266] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11265] <... futex resumed>) = 0 [pid 5046] mkdir("./511", 0777./strace-static-x86_64: Process 11269 attached ./strace-static-x86_64: Process 11270 attached [pid 11268] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11266] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11265] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11269] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11270] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11269] <... rseq resumed>) = 0 [pid 11270] <... rseq resumed>) = 0 [pid 11266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11265] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11264] <... clone3 resumed> => {parent_tid=[1035]}, 88) = 1035 [pid 11263] <... clone3 resumed> => {parent_tid=[1003]}, 88) = 1003 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11268] <... openat resumed>) = 4 [pid 5046] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11271 attached [pid 11269] set_robust_list(0x7f504ff7f9a0, 24 [pid 11270] set_robust_list(0x7f504ff7f9a0, 24 [pid 11265] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11268] ???( [pid 11264] rt_sigprocmask(SIG_SETMASK, [], [pid 11263] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./527/cgroup", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11271] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11269] <... set_robust_list resumed>) = 0 [pid 11270] <... set_robust_list resumed>) = 0 [pid 11268] <... ??? resumed>) = ? [pid 11266] <... clone3 resumed> => {parent_tid=[1029]}, 88) = 1029 [pid 11264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11272 attached [pid 11271] <... rseq resumed>) = 0 [pid 11269] rt_sigprocmask(SIG_SETMASK, [], [pid 11270] rt_sigprocmask(SIG_SETMASK, [], [pid 11268] +++ killed by SIGIO +++ [pid 11266] rt_sigprocmask(SIG_SETMASK, [], [pid 11264] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11271] set_robust_list(0x7f504ff7f9a0, 24 [pid 11269] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11266] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11263] <... futex resumed>) = 0 [pid 5051] unlink("./527/cgroup" [pid 11272] set_robust_list(0x555556ac56a0, 24 [pid 11271] <... set_robust_list resumed>) = 0 [pid 11269] open(".", O_RDONLY [pid 11270] open(".", O_RDONLY [pid 11266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11265] +++ killed by SIGIO +++ [pid 11264] <... futex resumed>) = 0 [pid 11263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1024 [pid 11272] <... set_robust_list resumed>) = 0 [pid 11269] <... open resumed>) = 3 [pid 11272] chdir("./511" [pid 5051] <... unlink resumed>) = 0 [pid 11272] <... chdir resumed>) = 0 [pid 11272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11269] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11270] <... open resumed>) = 3 [pid 11272] <... prctl resumed>) = 0 [pid 11271] rt_sigprocmask(SIG_SETMASK, [], [pid 11266] <... futex resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1055, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11272] setpgid(0, 0) = 0 [pid 11272] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 11272] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 11272] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 11272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11270] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11271] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11264] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11272] <... openat resumed>) = 3 [pid 11271] open(".", O_RDONLY [pid 11269] <... futex resumed>) = 1 [pid 11270] <... futex resumed>) = 0 [pid 11266] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11263] <... futex resumed>) = 0 [pid 5051] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11269] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11270] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11264] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11272] write(3, "1000", 4 [pid 11271] <... open resumed>) = 3 [pid 11269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11264] <... futex resumed>) = 0 [pid 11263] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 5050] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11272] <... write resumed>) = 4 [pid 11271] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11269] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11270] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11272] close(3 [pid 11271] <... futex resumed>) = 1 [pid 11269] <... fcntl resumed>) = 0 [pid 11266] <... futex resumed>) = 0 [pid 11264] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11272] <... close resumed>) = 0 [pid 11271] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11269] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11270] <... fcntl resumed>) = 0 [pid 11266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5050] <... openat resumed>) = 3 [pid 11272] symlink("/dev/binderfs", "./binderfs" [pid 11271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11269] <... futex resumed>) = 1 [pid 11270] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11266] <... futex resumed>) = 0 [pid 11272] <... symlink resumed>) = 0 [pid 11271] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11269] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11263] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 11271] <... fcntl resumed>) = 0 [pid 11266] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11272] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11271] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11272] <... futex resumed>) = 0 [pid 11271] <... futex resumed>) = 0 [pid 11266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11272] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11271] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11266] <... futex resumed>) = 0 [pid 11272] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11270] <... futex resumed>) = 1 [pid 11264] <... futex resumed>) = 0 [pid 11263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11271] <... openat resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11266] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11269] <... futex resumed>) = 0 [pid 11270] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11264] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11263] <... futex resumed>) = 1 [pid 11269] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11264] <... futex resumed>) = 0 [pid 11263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 11270] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11264] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 11272] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11271] +++ killed by SIGIO +++ [pid 11269] <... openat resumed>) = 4 [pid 11270] <... openat resumed>) = 4 [pid 11264] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11272] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11272] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11269] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11270] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11266] +++ killed by SIGIO +++ [pid 11264] ???( [pid 5051] unlink("./527/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11272] <... mprotect resumed>) = 0 [pid 11264] <... ??? resumed>) = ? [pid 5050] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 11272] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11269] +++ killed by SIGIO +++ [pid 11270] +++ killed by SIGIO +++ [pid 11263] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 11272] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1028, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5051] close(3 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 11272] <... clone3 resumed> => {parent_tid=[1025]}, 88) = 1025 [pid 5051] rmdir("./527" [pid 5047] umount2("./513", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5047] openat(AT_FDCWD, "./513", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11272] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11273 attached [pid 11272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11264] +++ killed by SIGIO +++ [pid 11263] +++ killed by SIGIO +++ [pid 5051] mkdir("./528", 0777 [pid 5050] unlink("./526/cgroup.cpu" [pid 5047] newfstatat(3, "", [pid 11273] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1002, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... unlink resumed>) = 0 [pid 11273] <... rseq resumed>) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11273] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11273] <... set_robust_list resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11273] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11273] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./526/binderfs", [pid 5045] <... restart_syscall resumed>) = 0 [pid 11273] open(".", O_RDONLY [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11273] <... open resumed>) = 3 [pid 5050] unlink("./526/binderfs" [pid 11273] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./500", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11273] <... futex resumed>) = 1 [pid 11273] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./500", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5051] <... mkdir resumed>) = 0 [pid 11272] <... futex resumed>) = 0 [pid 5047] getdents64(3, [pid 11272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./500/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./500/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./500/cgroup.cpu" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1034, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11273] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... unlink resumed>) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] umount2("./513/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11273] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] <... restart_syscall resumed>) = 0 [pid 11273] <... fcntl resumed>) = 0 [pid 5045] umount2("./500/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11273] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./500/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./516", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./500/binderfs" [pid 11273] <... futex resumed>) = 1 [pid 11272] <... futex resumed>) = 0 [pid 5050] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./513/cgroup.cpu", ./strace-static-x86_64: Process 11274 attached [pid 11273] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./516", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11274] set_robust_list(0x555556ac56a0, 24 [pid 11273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11272] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1058 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11273] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./526/cgroup", [pid 5049] <... openat resumed>) = 3 [pid 5047] unlink("./513/cgroup.cpu" [pid 5045] umount2("./500/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11274] <... set_robust_list resumed>) = 0 [pid 11274] chdir("./528" [pid 5049] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(AT_FDCWD, "./500/cgroup", [pid 5050] unlink("./526/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 11274] <... chdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] umount2("./513/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11273] <... openat resumed>) = 4 [pid 5045] unlink("./500/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./513/binderfs", [pid 11273] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11274] <... prctl resumed>) = 0 [pid 11272] <... futex resumed>) = ? [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11273] +++ killed by SIGIO +++ [pid 5049] umount2("./516/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11274] setpgid(0, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./513/binderfs" [pid 5050] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", [pid 5049] newfstatat(AT_FDCWD, "./516/cgroup.cpu", [pid 11274] <... setpgid resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11274] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./516/cgroup.cpu" [pid 5047] umount2("./513/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./500/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./516/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./500/blkio.bfq.io_wait_time_recursive", [pid 11274] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./513/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11274] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./500/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./516/binderfs", [pid 11274] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./513/cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11274] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./526/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./516/binderfs" [pid 11274] <... symlink resumed>) = 0 [pid 5050] unlink("./526/cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./516/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./500/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./513/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./513/blkio.bfq.io_wait_time_recursive", [pid 5045] newfstatat(AT_FDCWD, "./500/cgroup.net", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./516/cgroup", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./513/blkio.bfq.io_wait_time_recursive" [pid 11274] <... openat resumed>) = 3 [pid 11272] +++ killed by SIGIO +++ [pid 5050] <... close resumed>) = 0 [pid 5049] unlink("./516/cgroup" [pid 5045] unlink("./500/cgroup.net" [pid 11274] write(3, "1000", 4 [pid 5049] <... unlink resumed>) = 0 [pid 11274] <... write resumed>) = 4 [pid 11274] close(3) = 0 [pid 5049] umount2("./516/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11274] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./516/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./516/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1024, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5050] rmdir("./526" [pid 5047] umount2("./513/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11274] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./516/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11274] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11274] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... rmdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./513/cgroup.net", [pid 5046] umount2("./511", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 11274] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] mkdir("./527", 0777 [pid 5049] newfstatat(AT_FDCWD, "./516/cgroup.net", [pid 11274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 11274] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] openat(AT_FDCWD, "./511", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] unlink("./516/cgroup.net" [pid 11274] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./513/cgroup.net" [pid 5046] <... openat resumed>) = 3 [pid 5045] rmdir("./500" [pid 11274] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11274] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./516" [pid 5045] <... rmdir resumed>) = 0 [pid 5047] getdents64(3, [pid 5046] newfstatat(3, "", [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] close(3 [pid 11274] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... close resumed>) = 0 ./strace-static-x86_64: Process 11275 attached [pid 11274] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 5047] rmdir("./513" [pid 5046] getdents64(3, [pid 5045] mkdir("./501", 0777 [pid 11275] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11274] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] mkdir("./517", 0777 [pid 11275] <... rseq resumed>) = 0 [pid 11274] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11275] set_robust_list(0x7f504ff7f9a0, 24 [pid 11274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11275] <... set_robust_list resumed>) = 0 [pid 11274] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11275] rt_sigprocmask(SIG_SETMASK, [], [pid 11274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11275] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11275] open(".", O_RDONLY [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11275] <... open resumed>) = 3 [pid 5046] umount2("./511/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11275] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11274] <... futex resumed>) = 0 [pid 11275] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] mkdir("./514", 0777 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./511/cgroup.cpu", [pid 11274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11275] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11275] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11275] <... fcntl resumed>) = 0 [pid 11274] <... futex resumed>) = 0 [pid 5046] unlink("./511/cgroup.cpu"./strace-static-x86_64: Process 11276 attached [pid 11275] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11276] set_robust_list(0x555556ac56a0, 24 [pid 11275] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11277 attached [pid 11276] <... set_robust_list resumed>) = 0 [pid 11275] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11274] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11277] set_robust_list(0x555556ac56a0, 24 [pid 11276] chdir("./527" [pid 11274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11277] <... set_robust_list resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1036 [pid 11277] chdir("./517" [pid 11274] <... futex resumed>) = 1 [pid 11275] <... futex resumed>) = 0 [pid 11274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11278 attached [pid 11276] <... chdir resumed>) = 0 [pid 11275] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5046] umount2("./511/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11278] set_robust_list(0x555556ac56a0, 24 [pid 11277] <... chdir resumed>) = 0 [pid 11276] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11275] <... openat resumed>) = 4 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11278] <... set_robust_list resumed>) = 0 [pid 11277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11276] <... prctl resumed>) = 0 [pid 11277] <... prctl resumed>) = 0 [pid 11277] setpgid(0, 0) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1057 [pid 5046] newfstatat(AT_FDCWD, "./511/binderfs", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1004 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11277] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11276] setpgid(0, 0 [pid 11278] chdir("./501" [pid 11277] <... symlink resumed>) = 0 [pid 11276] <... setpgid resumed>) = 0 [pid 11278] <... chdir resumed>) = 0 [pid 11275] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11276] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] unlink("./511/binderfs"./strace-static-x86_64: Process 11279 attached [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1030 [pid 11274] <... futex resumed>) = ? [pid 5046] <... unlink resumed>) = 0 [pid 11279] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11278] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] umount2("./511/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11279] chdir("./514" [pid 11278] <... prctl resumed>) = 0 [pid 11277] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./511/cgroup", [pid 11278] setpgid(0, 0) = 0 [pid 11279] <... chdir resumed>) = 0 [pid 11278] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./511/cgroup" [pid 11279] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11278] <... symlink resumed>) = 0 [pid 11277] <... symlink resumed>) = 0 [pid 11276] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11278] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11275] +++ killed by SIGIO +++ [pid 11274] +++ killed by SIGIO +++ [pid 11279] <... prctl resumed>) = 0 [pid 11277] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11276] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1058, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] umount2("./511/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11279] setpgid(0, 0 [pid 11278] <... symlink resumed>) = 0 [pid 11279] <... setpgid resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11278] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11277] <... symlink resumed>) = 0 [pid 11276] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./511/blkio.bfq.io_wait_time_recursive", [pid 11279] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11278] <... openat resumed>) = 3 [pid 11278] write(3, "1000", 4) = 4 [pid 11278] close(3) = 0 [pid 11278] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11278] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11278] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11278] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11279] <... symlink resumed>) = 0 [pid 11277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11279] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11277] <... openat resumed>) = 3 [pid 11278] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11276] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] unlink("./511/blkio.bfq.io_wait_time_recursive" [pid 11278] <... mprotect resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11279] <... symlink resumed>) = 0 [pid 11277] write(3, "1000", 4./strace-static-x86_64: Process 11280 attached [pid 11278] <... clone3 resumed> => {parent_tid=[1005]}, 88) = 1005 [pid 11280] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11278] rt_sigprocmask(SIG_SETMASK, [], [pid 11277] <... write resumed>) = 4 [pid 11276] <... symlink resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 11280] <... rseq resumed>) = 0 [pid 11278] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11280] set_robust_list(0x7f504ff7f9a0, 24 [pid 11279] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11280] <... set_robust_list resumed>) = 0 [pid 11278] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11278] <... futex resumed>) = 0 [pid 11280] open(".", O_RDONLY [pid 11277] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./511/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11277] <... close resumed>) = 0 [pid 11276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11279] <... symlink resumed>) = 0 [pid 11280] <... open resumed>) = 3 [pid 11278] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11280] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11276] <... openat resumed>) = 3 [pid 11280] <... futex resumed>) = 0 [pid 11278] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11280] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11278] <... futex resumed>) = 0 [pid 11278] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11280] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11280] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11278] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11280] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11278] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11277] symlink("/dev/binderfs", "./binderfs" [pid 11279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] getdents64(3, [pid 11276] write(3, "1000", 4 [pid 5046] newfstatat(AT_FDCWD, "./511/cgroup.net", [pid 11280] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11278] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = ? [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11280] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11279] <... openat resumed>) = 3 [pid 11279] write(3, "1000", 4 [pid 11277] <... symlink resumed>) = 0 [pid 11276] <... write resumed>) = 4 [pid 5051] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./511/cgroup.net" [pid 11279] <... write resumed>) = 4 [pid 11278] +++ killed by SIGIO +++ [pid 11279] close(3 [pid 11277] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11276] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1004, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11279] <... close resumed>) = 0 [pid 11277] <... futex resumed>) = 0 [pid 11276] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 5046] <... unlink resumed>) = 0 [pid 11279] symlink("/dev/binderfs", "./binderfs" [pid 11277] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11276] symlink("/dev/binderfs", "./binderfs" [pid 11279] <... symlink resumed>) = 0 [pid 11277] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11276] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 5051] unlink("./528/cgroup.cpu" [pid 5045] umount2("./501", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 5045] openat(AT_FDCWD, "./501", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11279] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11277] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11276] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... close resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11279] <... futex resumed>) = 0 [pid 11277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11276] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11279] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11276] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11279] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11277] <... mmap resumed>) = 0x7f504ff5f000 [pid 11276] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11279] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11277] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11276] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11279] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11277] <... mprotect resumed>) = 0 [pid 11276] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11277] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./511" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11279] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11279] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11276] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./528/binderfs", [pid 5045] getdents64(3, [pid 11279] <... mprotect resumed>) = 0 [pid 11277] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11276] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11279] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11277] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11276] <... mprotect resumed>) = 0 [pid 5051] unlink("./528/binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 5045] umount2("./501/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11281 attached [pid 11279] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11276] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11277] <... clone3 resumed> => {parent_tid=[1037]}, 88) = 1037 [pid 11276] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./501/cgroup.cpu", [pid 11281] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11279] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11277] rt_sigprocmask(SIG_SETMASK, [], [pid 11276] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11283 attached [pid 11281] <... rseq resumed>) = 0 [pid 11277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11282 attached [pid 11283] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11276] <... clone3 resumed> => {parent_tid=[1058]}, 88) = 1058 [pid 5046] mkdir("./512", 0777 [pid 5045] unlink("./501/cgroup.cpu" [pid 5051] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11283] <... rseq resumed>) = 0 [pid 11282] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11281] set_robust_list(0x7f504ff7f9a0, 24 [pid 11277] <... futex resumed>) = 0 [pid 11276] rt_sigprocmask(SIG_SETMASK, [], [pid 11283] set_robust_list(0x7f504ff7f9a0, 24 [pid 11282] <... rseq resumed>) = 0 [pid 11277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11276] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11282] set_robust_list(0x7f504ff7f9a0, 24 [pid 11276] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... mkdir resumed>) = 0 [pid 11282] <... set_robust_list resumed>) = 0 [pid 11276] <... futex resumed>) = 0 [pid 11283] <... set_robust_list resumed>) = 0 [pid 11282] rt_sigprocmask(SIG_SETMASK, [], [pid 11276] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11283] rt_sigprocmask(SIG_SETMASK, [], [pid 11282] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11282] open(".", O_RDONLY [pid 11283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11283] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11282] <... open resumed>) = 3 [pid 11282] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11282] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11276] <... futex resumed>) = 0 [pid 11276] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11282] <... futex resumed>) = 0 [pid 11282] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11279] <... clone3 resumed> => {parent_tid=[1031]}, 88) = 1031 [pid 11276] <... futex resumed>) = 1 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./501/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11282] <... fcntl resumed>) = 0 [pid 11281] <... set_robust_list resumed>) = 0 [pid 11279] rt_sigprocmask(SIG_SETMASK, [], [pid 11276] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./528/cgroup", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11282] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11281] rt_sigprocmask(SIG_SETMASK, [], [pid 11276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11282] <... futex resumed>) = 0 [pid 11279] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11276] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11282] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11276] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./501/binderfs", [pid 11282] <... openat resumed>) = 4 [pid 11276] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11281] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11281] open(".", O_RDONLY) = 3 [pid 5051] unlink("./528/cgroup" [pid 11282] +++ killed by SIGIO +++ [pid 11281] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11279] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11284 attached [pid 11283] <... futex resumed>) = 0 [pid 11281] <... futex resumed>) = 1 [pid 11279] <... futex resumed>) = 1 [pid 11277] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./501/binderfs" [pid 11284] set_robust_list(0x555556ac56a0, 24 [pid 11283] open(".", O_RDONLY [pid 11281] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11279] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11276] +++ killed by SIGIO +++ [pid 5051] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1026 [pid 5045] <... unlink resumed>) = 0 [pid 11284] <... set_robust_list resumed>) = 0 [pid 11283] <... open resumed>) = 3 [pid 11281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11277] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./501/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11283] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11281] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 11284] chdir("./512" [pid 11283] <... futex resumed>) = 1 [pid 11281] <... fcntl resumed>) = 0 [pid 11279] <... futex resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1057, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] <... chdir resumed>) = 0 [pid 11283] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11281] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11279] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./501/cgroup", [pid 11284] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11281] <... futex resumed>) = 1 [pid 11279] <... futex resumed>) = 0 [pid 11277] <... futex resumed>) = 0 [pid 5051] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] <... prctl resumed>) = 0 [pid 11283] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11281] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11279] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11284] setpgid(0, 0 [pid 11283] <... fcntl resumed>) = 0 [pid 11281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11277] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11283] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11281] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... openat resumed>) = 3 [pid 5045] unlink("./501/cgroup" [pid 11284] <... setpgid resumed>) = 0 [pid 11283] <... futex resumed>) = 1 [pid 11281] <... openat resumed>) = 4 [pid 11279] <... futex resumed>) = 0 [pid 11277] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 11284] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11283] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11281] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11279] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11279] <... futex resumed>) = 0 [pid 11284] <... symlink resumed>) = 0 [pid 11283] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5051] newfstatat(AT_FDCWD, "./528/cgroup.net", [pid 5050] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11279] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11284] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11283] <... openat resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./501/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11284] <... symlink resumed>) = 0 [pid 11283] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11279] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./528/cgroup.net" [pid 5050] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11281] +++ killed by SIGIO +++ [pid 11277] +++ killed by SIGIO +++ [pid 11284] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1036, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./501/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./501/blkio.bfq.io_wait_time_recursive" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./527/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 11284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11283] +++ killed by SIGIO +++ [pid 11279] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./517", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1030, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] <... close resumed>) = 0 [pid 5045] umount2("./501/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11284] <... openat resumed>) = 3 [pid 5051] rmdir("./528" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./514", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] write(3, "1000", 4 [pid 5049] openat(AT_FDCWD, "./517", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] <... write resumed>) = 4 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./527/binderfs", [pid 5049] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./514", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./501/cgroup.net", [pid 11284] close(3 [pid 5051] mkdir("./529", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11284] <... close resumed>) = 0 [pid 5050] unlink("./527/binderfs" [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./501/cgroup.net" [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11284] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./527/cgroup", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] getdents64(3, [pid 5045] close(3 [pid 11284] <... symlink resumed>) = 0 [pid 5050] unlink("./527/cgroup" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] rmdir("./501" [pid 5051] <... mkdir resumed>) = 0 [pid 5047] umount2("./514/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11284] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11284] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./517/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] mkdir("./502", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11284] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11284] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] newfstatat(AT_FDCWD, "./514/cgroup.cpu", [pid 5050] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 11284] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./517/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11284] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11286 attached => {parent_tid=[1027]}, 88) = 1027 [pid 11286] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11286] <... rseq resumed>) = 0 [pid 11284] rt_sigprocmask(SIG_SETMASK, [], [pid 11286] set_robust_list(0x7f504ff7f9a0, 24 [pid 11284] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11285 attached [pid 11286] <... set_robust_list resumed>) = 0 [pid 11284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1060 [pid 11286] rt_sigprocmask(SIG_SETMASK, [], [pid 11285] set_robust_list(0x555556ac56a0, 24 [pid 11284] <... futex resumed>) = 0 [pid 11286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11285] <... set_robust_list resumed>) = 0 [pid 11284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./517/cgroup.cpu" [pid 5047] unlink("./514/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11286] open(".", O_RDONLY [pid 11285] chdir("./529" [pid 11286] <... open resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 11286] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11285] <... chdir resumed>) = 0 [pid 11286] <... futex resumed>) = 1 [pid 11284] <... futex resumed>) = 0 [pid 11286] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11286] <... fcntl resumed>) = 0 [pid 11285] <... prctl resumed>) = 0 [pid 11286] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11285] setpgid(0, 0 [pid 11284] <... futex resumed>) = 0 [pid 11286] <... futex resumed>) = 0 [pid 11285] <... setpgid resumed>) = 0 [pid 11284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11286] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11285] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11287 attached [pid 11286] <... futex resumed>) = 0 [pid 11284] <... futex resumed>) = 1 [pid 5050] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./517/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./514/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11286] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11287] set_robust_list(0x555556ac56a0, 24 [pid 11286] <... openat resumed>) = 4 [pid 11285] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 5049] newfstatat(AT_FDCWD, "./517/binderfs", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1006 [pid 11287] <... set_robust_list resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./514/binderfs", [pid 11286] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11284] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 11287] chdir("./502" [pid 5049] unlink("./517/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11287] <... chdir resumed>) = 0 [pid 11285] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./514/binderfs" [pid 11287] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] unlink("./527/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 11286] +++ killed by SIGIO +++ [pid 11284] +++ killed by SIGIO +++ [pid 11287] <... prctl resumed>) = 0 [pid 11285] <... symlink resumed>) = 0 [pid 5049] umount2("./517/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./514/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11287] setpgid(0, 0 [pid 5050] <... unlink resumed>) = 0 [pid 11287] <... setpgid resumed>) = 0 [pid 11285] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11287] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11285] <... symlink resumed>) = 0 [pid 5050] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./517/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./514/cgroup", [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1026, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11287] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./512", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./514/cgroup" [pid 5046] openat(AT_FDCWD, "./512", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11287] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11285] <... openat resumed>) = 3 [pid 5050] close(3 [pid 5049] unlink("./517/cgroup" [pid 5046] <... openat resumed>) = 3 [pid 5046] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11285] write(3, "1000", 4 [pid 5046] umount2("./512/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11285] <... write resumed>) = 4 [pid 11287] <... symlink resumed>) = 0 [pid 11285] close(3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... close resumed>) = 0 [pid 11285] <... close resumed>) = 0 [pid 5047] umount2("./514/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11285] symlink("/dev/binderfs", "./binderfs" [pid 5049] umount2("./517/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./512/cgroup.cpu", [pid 11285] <... symlink resumed>) = 0 [pid 5050] rmdir("./527" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./514/blkio.bfq.io_wait_time_recursive", [pid 11287] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11285] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./517/blkio.bfq.io_wait_time_recursive", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11285] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./514/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./512/cgroup.cpu" [pid 11287] <... openat resumed>) = 3 [pid 11285] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... rmdir resumed>) = 0 [pid 5049] unlink("./517/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 11287] write(3, "1000", 4 [pid 11285] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11287] <... write resumed>) = 4 [pid 11285] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] mkdir("./528", 0777 [pid 5049] <... unlink resumed>) = 0 [pid 11287] close(3 [pid 11285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] umount2("./514/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./512/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11287] <... close resumed>) = 0 [pid 11285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5049] umount2("./517/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11287] symlink("/dev/binderfs", "./binderfs" [pid 11285] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./514/cgroup.net", [pid 5046] newfstatat(AT_FDCWD, "./512/binderfs", [pid 11285] <... mprotect resumed>) = 0 [pid 11287] <... symlink resumed>) = 0 [pid 11285] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] newfstatat(AT_FDCWD, "./517/cgroup.net", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11287] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./512/binderfs" [pid 11285] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./514/cgroup.net" [pid 11287] <... futex resumed>) = 0 [pid 11285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] unlink("./517/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11287] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, ./strace-static-x86_64: Process 11288 attached NULL, 8) = 0 [pid 11285] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11288] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11287] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11285] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] umount2("./512/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11288] <... rseq resumed>) = 0 [pid 11285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] getdents64(3, [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11288] set_robust_list(0x7f504ff7f9a0, 24 [pid 11285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 11288] <... set_robust_list resumed>) = 0 [pid 11285] <... futex resumed>) = 0 [pid 11288] rt_sigprocmask(SIG_SETMASK, [], [pid 11285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] close(3 [pid 5047] <... close resumed>) = 0 [pid 11288] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 11288] open(".", O_RDONLY [pid 5047] rmdir("./514"./strace-static-x86_64: Process 11289 attached [pid 11288] <... open resumed>) = 3 [pid 11287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] rmdir("./517" [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11289] set_robust_list(0x555556ac56a0, 24 [pid 11288] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11285] <... futex resumed>) = 0 [pid 11288] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11285] <... futex resumed>) = 0 [pid 11288] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11289] <... set_robust_list resumed>) = 0 [pid 11288] <... fcntl resumed>) = 0 [pid 11287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1059 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] mkdir("./515", 0777 [pid 5046] newfstatat(AT_FDCWD, "./512/cgroup", [pid 11288] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11287] <... mmap resumed>) = 0x7f504ff5f000 [pid 11288] <... futex resumed>) = 1 [pid 11285] <... futex resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11289] chdir("./528" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./512/cgroup" [pid 11288] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] mkdir("./518", 0777 [pid 11288] <... openat resumed>) = 4 [pid 11287] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... unlink resumed>) = 0 [pid 11289] <... chdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11285] <... futex resumed>) = 0 [pid 5046] umount2("./512/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11290 attached [pid 11288] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11289] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11287] <... mprotect resumed>) = 0 [pid 11285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11290] set_robust_list(0x555556ac56a0, 24 [pid 11289] <... prctl resumed>) = 0 [pid 11287] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./512/blkio.bfq.io_wait_time_recursive", [pid 11290] <... set_robust_list resumed>) = 0 [pid 11289] setpgid(0, 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11290] chdir("./515" [pid 11289] <... setpgid resumed>) = 0 [pid 5046] unlink("./512/blkio.bfq.io_wait_time_recursive" [pid 11289] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11291 attached [pid 11290] <... chdir resumed>) = 0 [pid 11287] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11285] <... futex resumed>) = ? [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1032 [pid 5046] umount2("./512/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11290] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11289] <... symlink resumed>) = 0 [pid 11287] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11291] set_robust_list(0x555556ac56a0, 24 [pid 11290] <... prctl resumed>) = 0 [pid 11289] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11291] <... set_robust_list resumed>) = 0 [pid 11290] setpgid(0, 0 [pid 11289] <... symlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1038 ./strace-static-x86_64: Process 11292 attached [pid 11290] <... setpgid resumed>) = 0 [pid 11292] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11290] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11289] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11292] <... rseq resumed>) = 0 [pid 11292] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11292] rt_sigprocmask(SIG_SETMASK, [], [pid 11289] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./512/cgroup.net", [pid 11292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11291] chdir("./518" [pid 11290] <... symlink resumed>) = 0 [pid 11289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11287] <... clone3 resumed> => {parent_tid=[1007]}, 88) = 1007 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11292] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11291] <... chdir resumed>) = 0 [pid 11289] <... openat resumed>) = 3 [pid 11287] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] unlink("./512/cgroup.net" [pid 11291] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11290] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11289] write(3, "1000", 4 [pid 11287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11291] <... prctl resumed>) = 0 [pid 11290] <... symlink resumed>) = 0 [pid 11289] <... write resumed>) = 4 [pid 11287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11291] setpgid(0, 0 [pid 11292] <... futex resumed>) = 0 [pid 11289] close(3 [pid 11287] <... futex resumed>) = 1 [pid 11292] open(".", O_RDONLY [pid 11291] <... setpgid resumed>) = 0 [pid 11290] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11289] <... close resumed>) = 0 [pid 5046] getdents64(3, [pid 11292] <... open resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11292] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11291] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11290] <... symlink resumed>) = 0 [pid 11289] symlink("/dev/binderfs", "./binderfs" [pid 11287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] close(3 [pid 11292] <... futex resumed>) = 0 [pid 11288] +++ killed by SIGIO +++ [pid 11285] +++ killed by SIGIO +++ [pid 11292] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11291] <... symlink resumed>) = 0 [pid 11290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11289] <... symlink resumed>) = 0 [pid 11287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1060, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... close resumed>) = 0 [pid 11291] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11290] <... openat resumed>) = 3 [pid 11289] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] rmdir("./512" [pid 11292] <... futex resumed>) = 0 [pid 11291] <... symlink resumed>) = 0 [pid 11290] write(3, "1000", 4 [pid 11289] <... futex resumed>) = 0 [pid 11287] <... futex resumed>) = 1 [pid 11292] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11290] <... write resumed>) = 4 [pid 11289] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11292] <... fcntl resumed>) = 0 [pid 11290] close(3 [pid 11289] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11292] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11291] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11290] <... close resumed>) = 0 [pid 11289] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... rmdir resumed>) = 0 [pid 11292] <... futex resumed>) = 1 [pid 11290] symlink("/dev/binderfs", "./binderfs" [pid 11289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11287] <... futex resumed>) = 0 [pid 11292] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11290] <... symlink resumed>) = 0 [pid 11289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11292] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11291] <... symlink resumed>) = 0 [pid 11289] <... mmap resumed>) = 0x7f504ff5f000 [pid 11287] <... futex resumed>) = 0 [pid 5046] mkdir("./513", 0777 [pid 11292] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11290] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11289] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11292] <... openat resumed>) = 4 [pid 5046] <... mkdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11289] <... mprotect resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11292] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11290] <... futex resumed>) = 0 [pid 11289] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11287] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... openat resumed>) = 3 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11290] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11287] restart_syscall(<... resuming interrupted futex ...> [pid 11290] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11289] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11287] <... restart_syscall resumed>) = ? [pid 11292] +++ killed by SIGIO +++ [pid 11290] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 11293 attached [pid 11291] <... openat resumed>) = 3 [pid 11290] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(3, "", [pid 11293] set_robust_list(0x555556ac56a0, 24 [pid 11291] write(3, "1000", 4 [pid 11290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11287] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11294 attached [pid 11293] <... set_robust_list resumed>) = 0 [pid 11291] <... write resumed>) = 4 [pid 11290] <... mmap resumed>) = 0x7f504ff5f000 [pid 11289] <... clone3 resumed> => {parent_tid=[1060]}, 88) = 1060 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1028 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1006, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5051] getdents64(3, [pid 11294] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11293] chdir("./513" [pid 11291] close(3 [pid 11290] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11289] rt_sigprocmask(SIG_SETMASK, [], [pid 11294] <... rseq resumed>) = 0 [pid 11293] <... chdir resumed>) = 0 [pid 11291] <... close resumed>) = 0 [pid 11290] <... mprotect resumed>) = 0 [pid 11289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11294] set_robust_list(0x7f504ff7f9a0, 24 [pid 11293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11291] symlink("/dev/binderfs", "./binderfs" [pid 11290] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11289] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11294] <... set_robust_list resumed>) = 0 [pid 11293] <... prctl resumed>) = 0 [pid 11291] <... symlink resumed>) = 0 [pid 11290] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11289] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11294] rt_sigprocmask(SIG_SETMASK, [], [pid 11293] setpgid(0, 0 [pid 11291] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11289] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 11294] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11293] <... setpgid resumed>) = 0 [pid 5045] umount2("./502", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11295 attached [pid 11294] open(".", O_RDONLY [pid 11290] <... clone3 resumed> => {parent_tid=[1033]}, 88) = 1033 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11295] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11294] <... open resumed>) = 3 [pid 11293] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11291] <... futex resumed>) = 0 [pid 11290] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./529/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11295] <... rseq resumed>) = 0 [pid 11294] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11291] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11290] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11295] set_robust_list(0x7f504ff7f9a0, 24 [pid 11294] <... futex resumed>) = 1 [pid 11291] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11290] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11289] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./502", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11295] <... set_robust_list resumed>) = 0 [pid 11294] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11290] <... futex resumed>) = 0 [pid 11289] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11293] <... symlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11291] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11295] rt_sigprocmask(SIG_SETMASK, [], [pid 11294] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11293] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11290] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11289] <... futex resumed>) = 0 [pid 5051] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11294] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11291] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11294] <... fcntl resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(3, "", [pid 11295] open(".", O_RDONLY [pid 11294] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11293] <... symlink resumed>) = 0 [pid 11291] <... mmap resumed>) = 0x7f504ff5f000 [pid 11289] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11295] <... open resumed>) = 3 [pid 11294] <... futex resumed>) = 0 [pid 11293] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11291] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./529/binderfs", [pid 5045] getdents64(3, [pid 11295] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11294] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11295] <... futex resumed>) = 1 [pid 11293] <... symlink resumed>) = 0 [pid 11290] <... futex resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11295] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11291] <... mprotect resumed>) = 0 [pid 11290] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./529/binderfs" [pid 11295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11290] <... futex resumed>) = 0 [pid 5045] umount2("./502/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11295] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11291] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11290] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11289] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11295] <... fcntl resumed>) = 0 [pid 11295] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./502/cgroup.cpu", [pid 11295] <... futex resumed>) = 1 [pid 11291] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11290] <... futex resumed>) = 0 [pid 11294] <... futex resumed>) = 0 [pid 11289] <... futex resumed>) = 1 [pid 5051] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11295] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11294] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11293] <... openat resumed>) = 3 [pid 11290] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11293] write(3, "1000", 4 [pid 11291] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11290] <... futex resumed>) = 0 [pid 11289] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./502/cgroup.cpu" [pid 11295] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11294] <... openat resumed>) = 4 [pid 11293] <... write resumed>) = 4 [pid 11290] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./529/cgroup", [pid 11289] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11293] close(3./strace-static-x86_64: Process 11296 attached [pid 11295] <... openat resumed>) = 4 [pid 11291] <... clone3 resumed> => {parent_tid=[1039]}, 88) = 1039 [pid 11289] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11293] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11296] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11293] symlink("/dev/binderfs", "./binderfs" [pid 11291] rt_sigprocmask(SIG_SETMASK, [], [pid 11294] +++ killed by SIGIO +++ [pid 11293] <... symlink resumed>) = 0 [pid 11296] <... rseq resumed>) = 0 [pid 11295] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11291] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11290] <... futex resumed>) = 0 [pid 5051] unlink("./529/cgroup" [pid 5045] umount2("./502/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11296] set_robust_list(0x7f504ff7f9a0, 24 [pid 11293] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11291] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11296] <... set_robust_list resumed>) = 0 [pid 11293] <... futex resumed>) = 0 [pid 11291] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11296] rt_sigprocmask(SIG_SETMASK, [], [pid 11293] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11291] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./502/binderfs", [pid 11296] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11293] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11293] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11296] open(".", O_RDONLY [pid 11293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] unlink("./502/binderfs" [pid 11293] <... mmap resumed>) = 0x7f504ff5f000 [pid 11295] +++ killed by SIGIO +++ [pid 11290] +++ killed by SIGIO +++ [pid 5045] <... unlink resumed>) = 0 [pid 11293] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1032, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11296] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 11296] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11293] <... mprotect resumed>) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11293] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11289] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./502/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11293] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1059, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11296] <... futex resumed>) = 1 [pid 11293] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11291] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./502/cgroup", [pid 11296] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11291] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./515", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11297 attached [pid 11296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11293] <... clone3 resumed> => {parent_tid=[1029]}, 88) = 1029 [pid 11291] <... futex resumed>) = 0 [pid 5051] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11293] rt_sigprocmask(SIG_SETMASK, [], [pid 11297] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11296] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11291] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./502/cgroup" [pid 11297] <... rseq resumed>) = 0 [pid 11296] <... fcntl resumed>) = 0 [pid 11293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 5050] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] openat(AT_FDCWD, "./515", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11297] set_robust_list(0x7f504ff7f9a0, 24 [pid 11296] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11293] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 11293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./529/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11297] <... set_robust_list resumed>) = 0 [pid 11296] <... futex resumed>) = 1 [pid 11291] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] newfstatat(3, "", [pid 11297] rt_sigprocmask(SIG_SETMASK, [], [pid 11296] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11291] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./502/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11297] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11291] <... futex resumed>) = 0 [pid 5050] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11297] open(".", O_RDONLY [pid 11296] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11291] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 11296] <... openat resumed>) = 4 [pid 5051] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11297] <... open resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./502/blkio.bfq.io_wait_time_recursive", [pid 5050] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 11297] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11293] <... futex resumed>) = 0 [pid 11297] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11297] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11293] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11297] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11297] <... fcntl resumed>) = 0 [pid 11296] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./515/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11297] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11291] <... futex resumed>) = ? [pid 5051] <... close resumed>) = 0 [pid 5050] unlink("./528/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./502/blkio.bfq.io_wait_time_recursive" [pid 11297] <... futex resumed>) = 1 [pid 11296] +++ killed by SIGIO +++ [pid 11293] <... futex resumed>) = 0 [pid 11291] +++ killed by SIGIO +++ [pid 5051] rmdir("./529" [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./515/cgroup.cpu", [pid 5045] <... unlink resumed>) = 0 [pid 5050] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1038, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11297] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./502/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... rmdir resumed>) = 0 [pid 11297] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11293] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./528/binderfs", [pid 5047] unlink("./515/cgroup.cpu" [pid 5051] mkdir("./530", 0777 [pid 11297] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11297] <... openat resumed>) = 4 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] umount2("./518", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./518", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] umount2("./515/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./528/binderfs" [pid 5045] newfstatat(AT_FDCWD, "./502/cgroup.net", [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] newfstatat(3, "", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11297] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11293] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5045] unlink("./502/cgroup.net"./strace-static-x86_64: Process 11298 attached [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11298] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./528/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./515/binderfs", [pid 11298] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1062 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11298] chdir("./530" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11298] <... chdir resumed>) = 0 [pid 11298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11298] setpgid(0, 0) = 0 [pid 11298] symlink("/syzcgroup/unified/syz5", "./cgroup") = 0 [pid 11298] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 5050] unlink("./528/cgroup" [pid 5045] getdents64(3, [pid 5049] umount2("./518/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./515/binderfs" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11298] symlink("/syzcgroup/net/syz5", "./cgroup.net") = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./518/cgroup.cpu", [pid 5045] <... close resumed>) = 0 [pid 11298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./502" [pid 5047] umount2("./515/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11298] <... openat resumed>) = 3 [pid 11297] +++ killed by SIGIO +++ [pid 11293] +++ killed by SIGIO +++ [pid 5050] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./518/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11298] write(3, "1000", 4 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1028, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11298] <... write resumed>) = 4 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./515/cgroup", [pid 5050] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 11298] close(3 [pid 5049] umount2("./518/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./503", 0777 [pid 11298] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./515/cgroup" [pid 11298] symlink("/dev/binderfs", "./binderfs" [pid 5046] umount2("./513", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11298] <... symlink resumed>) = 0 [pid 5050] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 5045] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./513", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11298] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./518/binderfs", [pid 5047] umount2("./515/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11298] <... futex resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11298] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11298] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] getdents64(3, [pid 11298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./528/cgroup.net", [pid 5046] umount2("./513/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./515/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./513/cgroup.cpu", [pid 5050] unlink("./528/cgroup.net" [pid 5049] unlink("./518/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./513/cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./515/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./513/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./513/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./513/binderfs" [pid 5049] umount2("./518/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./515/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11298] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] close(3 [pid 5046] umount2("./513/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11298] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11298] <... mprotect resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./518/cgroup", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./528" [pid 5047] newfstatat(AT_FDCWD, "./515/cgroup.net", ./strace-static-x86_64: Process 11299 attached [pid 11298] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./513/cgroup", [pid 11299] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1008 [pid 11299] <... set_robust_list resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11299] chdir("./503" [pid 11298] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] unlink("./513/cgroup" [pid 5049] unlink("./518/cgroup" [pid 5047] unlink("./515/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 11298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5050] mkdir("./529", 0777 [pid 11299] <... chdir resumed>) = 0 [pid 5046] umount2("./513/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11300 attached [pid 11299] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... unlink resumed>) = 0 [pid 11300] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11299] <... prctl resumed>) = 0 [pid 11298] <... clone3 resumed> => {parent_tid=[1063]}, 88) = 1063 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11300] <... rseq resumed>) = 0 [pid 11299] setpgid(0, 0 [pid 11298] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... mkdir resumed>) = 0 [pid 5049] umount2("./518/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./513/blkio.bfq.io_wait_time_recursive", [pid 11300] set_robust_list(0x7f504ff7f9a0, 24 [pid 11299] <... setpgid resumed>) = 0 [pid 11298] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11300] <... set_robust_list resumed>) = 0 [pid 11299] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11300] rt_sigprocmask(SIG_SETMASK, [], [pid 11299] <... symlink resumed>) = 0 [pid 11298] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./518/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./513/blkio.bfq.io_wait_time_recursive" [pid 11300] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11300] open(".", O_RDONLY [pid 11298] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 11300] <... open resumed>) = 3 [pid 11299] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11300] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11299] <... symlink resumed>) = 0 [pid 5047] close(3 [pid 5046] umount2("./513/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11300] <... futex resumed>) = 1 [pid 11298] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11300] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./518/blkio.bfq.io_wait_time_recursive" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11300] <... fcntl resumed>) = 0 [pid 11299] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11298] <... futex resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./513/cgroup.net", [pid 11300] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11299] <... symlink resumed>) = 0 [pid 11298] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 [pid 5047] rmdir("./515" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11301 attached [pid 11300] <... futex resumed>) = 0 [pid 5049] umount2("./518/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11301] set_robust_list(0x555556ac56a0, 24 [pid 11300] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11298] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1061 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] unlink("./513/cgroup.net" [pid 11301] <... set_robust_list resumed>) = 0 [pid 11298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./516", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 11301] chdir("./529" [pid 11300] <... futex resumed>) = 0 [pid 11299] <... openat resumed>) = 3 [pid 11298] <... futex resumed>) = 1 [pid 5047] <... mkdir resumed>) = 0 [pid 11301] <... chdir resumed>) = 0 [pid 11300] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11298] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./518/cgroup.net", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] getdents64(3, [pid 11301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11299] write(3, "1000", 4) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11301] setpgid(0, 0 [pid 11299] close(3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11299] <... close resumed>) = 0 [pid 11301] <... setpgid resumed>) = 0 [pid 5046] close(3 [pid 11299] symlink("/dev/binderfs", "./binderfs" [pid 5049] unlink("./518/cgroup.net" [pid 11301] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11299] <... symlink resumed>) = 0 [pid 11299] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11299] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11299] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11299] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] rmdir("./513" [pid 5049] getdents64(3, [pid 11299] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11301] <... symlink resumed>) = 0 [pid 11299] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] close(3 [pid 5046] <... rmdir resumed>) = 0 [pid 11300] <... openat resumed>) = 4 [pid 11299] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 11301] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11300] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] mkdir("./514", 0777./strace-static-x86_64: Process 11302 attached [pid 11299] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] rmdir("./518" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1034 ./strace-static-x86_64: Process 11303 attached [pid 11302] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... mkdir resumed>) = 0 [pid 11303] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11302] <... set_robust_list resumed>) = 0 [pid 11301] <... symlink resumed>) = 0 [pid 11299] <... clone3 resumed> => {parent_tid=[1009]}, 88) = 1009 [pid 11298] <... futex resumed>) = ? [pid 11303] <... rseq resumed>) = 0 [pid 11302] chdir("./516" [pid 11300] +++ killed by SIGIO +++ [pid 11299] rt_sigprocmask(SIG_SETMASK, [], [pid 11303] set_robust_list(0x7f504ff7f9a0, 24 [pid 11299] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11303] <... set_robust_list resumed>) = 0 [pid 11303] rt_sigprocmask(SIG_SETMASK, [], [pid 11302] <... chdir resumed>) = 0 [pid 11299] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11303] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11302] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11299] <... futex resumed>) = 0 [pid 11303] open(".", O_RDONLY [pid 11302] <... prctl resumed>) = 0 [pid 11302] setpgid(0, 0 [pid 11299] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11303] <... open resumed>) = 3 [pid 11302] <... setpgid resumed>) = 0 [pid 11302] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11303] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... rmdir resumed>) = 0 [pid 11299] <... futex resumed>) = 0 [pid 11299] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11303] <... futex resumed>) = 1 [pid 11299] <... futex resumed>) = 0 [pid 11303] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11301] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11299] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11303] <... fcntl resumed>) = 0 [pid 11302] <... symlink resumed>) = 0 [pid 11301] <... symlink resumed>) = 0 [pid 5049] mkdir("./519", 0777 [pid 11303] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11302] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11303] <... futex resumed>) = 1 [pid 11302] <... symlink resumed>) = 0 [pid 11299] <... futex resumed>) = 0 [pid 11303] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11299] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11303] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11302] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] <... mkdir resumed>) = 0 [pid 11302] <... symlink resumed>) = 0 [pid 11301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11299] <... futex resumed>) = 0 [pid 11303] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11302] <... openat resumed>) = 3 [pid 11301] <... openat resumed>) = 3 [pid 11299] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11301] write(3, "1000", 4 [pid 11299] <... futex resumed>) = ? [pid 11303] +++ killed by SIGIO +++ [pid 11302] write(3, "1000", 4./strace-static-x86_64: Process 11305 attached ./strace-static-x86_64: Process 11304 attached ) = 4 [pid 11301] <... write resumed>) = 4 [pid 11298] +++ killed by SIGIO +++ [pid 11305] set_robust_list(0x555556ac56a0, 24 [pid 11304] set_robust_list(0x555556ac56a0, 24 [pid 11301] close(3 [pid 11304] <... set_robust_list resumed>) = 0 [pid 11302] close(3 [pid 11301] <... close resumed>) = 0 [pid 11299] +++ killed by SIGIO +++ [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1062, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1040 [pid 11305] <... set_robust_list resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1030 [pid 11304] chdir("./514" [pid 11302] <... close resumed>) = 0 [pid 11301] symlink("/dev/binderfs", "./binderfs" [pid 11304] <... chdir resumed>) = 0 [pid 11302] symlink("/dev/binderfs", "./binderfs" [pid 11305] chdir("./519" [pid 11304] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11302] <... symlink resumed>) = 0 [pid 11301] <... symlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1008, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11305] <... chdir resumed>) = 0 [pid 11304] <... prctl resumed>) = 0 [pid 11302] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11305] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11304] setpgid(0, 0 [pid 11301] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11304] <... setpgid resumed>) = 0 [pid 11302] <... futex resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11304] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11302] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11304] <... symlink resumed>) = 0 [pid 11302] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... openat resumed>) = 3 [pid 5045] umount2("./503", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11304] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11302] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11304] <... symlink resumed>) = 0 [pid 11302] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(3, "", [pid 5045] openat(AT_FDCWD, "./503", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11302] <... mprotect resumed>) = 0 [pid 5051] getdents64(3, [pid 11302] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11304] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11302] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11305] <... prctl resumed>) = 0 [pid 11304] <... symlink resumed>) = 0 [pid 11302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11301] <... futex resumed>) = 0 [pid 5051] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11305] setpgid(0, 0 [pid 11301] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11305] <... setpgid resumed>) = 0 [pid 11301] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11306 attached [pid 11305] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11301] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11306] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11302] <... clone3 resumed> => {parent_tid=[1035]}, 88) = 1035 [pid 11301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 5045] umount2("./503/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11306] <... rseq resumed>) = 0 [pid 11305] <... symlink resumed>) = 0 [pid 11304] <... openat resumed>) = 3 [pid 11302] rt_sigprocmask(SIG_SETMASK, [], [pid 11301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11306] set_robust_list(0x7f504ff7f9a0, 24 [pid 11302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11301] <... mmap resumed>) = 0x7f504ff5f000 [pid 11306] <... set_robust_list resumed>) = 0 [pid 11305] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11301] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./530/cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./503/cgroup.cpu", [pid 11306] rt_sigprocmask(SIG_SETMASK, [], [pid 11304] write(3, "1000", 4 [pid 11302] <... futex resumed>) = 0 [pid 11301] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11306] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11305] <... symlink resumed>) = 0 [pid 11304] <... write resumed>) = 4 [pid 11302] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./503/cgroup.cpu" [pid 11306] open(".", O_RDONLY [pid 11305] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11304] close(3 [pid 11301] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11306] <... open resumed>) = 3 [pid 11305] <... symlink resumed>) = 0 [pid 11304] <... close resumed>) = 0 [pid 11301] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11306] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./530/binderfs", ./strace-static-x86_64: Process 11307 attached [pid 11306] <... futex resumed>) = 1 [pid 11305] <... openat resumed>) = 3 [pid 11304] symlink("/dev/binderfs", "./binderfs" [pid 11302] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./503/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11307] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11306] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11305] write(3, "1000", 4 [pid 11301] <... clone3 resumed> => {parent_tid=[1062]}, 88) = 1062 [pid 11307] <... rseq resumed>) = 0 [pid 11306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11305] <... write resumed>) = 4 [pid 11304] <... symlink resumed>) = 0 [pid 11302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11301] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./530/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11307] set_robust_list(0x7f504ff7f9a0, 24 [pid 11306] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11305] close(3 [pid 11304] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11302] <... futex resumed>) = 0 [pid 11301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./503/binderfs", [pid 11307] <... set_robust_list resumed>) = 0 [pid 11306] <... fcntl resumed>) = 0 [pid 11305] <... close resumed>) = 0 [pid 11302] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11301] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11307] rt_sigprocmask(SIG_SETMASK, [], [pid 11306] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11305] symlink("/dev/binderfs", "./binderfs" [pid 11304] <... futex resumed>) = 0 [pid 11302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11301] <... futex resumed>) = 0 [pid 5051] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11307] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11306] <... futex resumed>) = 0 [pid 11305] <... symlink resumed>) = 0 [pid 11304] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11301] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./503/binderfs" [pid 11307] open(".", O_RDONLY [pid 11306] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11305] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11304] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11302] <... futex resumed>) = 0 [pid 11307] <... open resumed>) = 3 [pid 11305] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11307] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11306] <... openat resumed>) = 4 [pid 11305] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11302] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./530/cgroup", [pid 5045] umount2("./503/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11307] <... futex resumed>) = 1 [pid 11305] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11301] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11307] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11305] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11301] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./530/cgroup" [pid 11304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11301] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./503/cgroup", [pid 11307] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11304] <... mmap resumed>) = 0x7f504ff5f000 [pid 11301] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11307] <... fcntl resumed>) = 0 [pid 11305] <... mmap resumed>) = 0x7f504ff5f000 [pid 11307] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11305] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11307] <... futex resumed>) = 1 [pid 11305] <... mprotect resumed>) = 0 [pid 11307] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11301] <... futex resumed>) = 0 [pid 11305] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11301] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11307] <... futex resumed>) = 0 [pid 11301] <... futex resumed>) = 1 [pid 11307] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11301] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11305] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11307] <... openat resumed>) = 4 [pid 11305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 11304] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11306] +++ killed by SIGIO +++ [pid 11302] +++ killed by SIGIO +++ [pid 5051] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11308 attached [pid 11307] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11305] <... clone3 resumed> => {parent_tid=[1041]}, 88) = 1041 [pid 11304] <... mprotect resumed>) = 0 [pid 11301] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11308] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11305] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 11308] <... rseq resumed>) = 0 [pid 11305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11304] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./503/cgroup" [pid 11308] set_robust_list(0x7f504ff7f9a0, 24 [pid 11305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11304] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 5045] <... unlink resumed>) = 0 [pid 11308] <... set_robust_list resumed>) = 0 [pid 11307] +++ killed by SIGIO +++ [pid 11305] <... futex resumed>) = 0 [pid 11304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11301] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1034, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] umount2("./503/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11309 attached [pid 11308] rt_sigprocmask(SIG_SETMASK, [], [pid 11305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1061, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11309] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11308] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11304] <... clone3 resumed> => {parent_tid=[1031]}, 88) = 1031 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./516", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11309] <... rseq resumed>) = 0 [pid 11308] open(".", O_RDONLY [pid 11304] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./503/blkio.bfq.io_wait_time_recursive", [pid 11309] set_robust_list(0x7f504ff7f9a0, 24 [pid 11308] <... open resumed>) = 3 [pid 11304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./516", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11309] <... set_robust_list resumed>) = 0 [pid 11304] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./530/cgroup.net" [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./503/blkio.bfq.io_wait_time_recursive" [pid 11309] rt_sigprocmask(SIG_SETMASK, [], [pid 11308] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11304] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11309] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11308] <... futex resumed>) = 1 [pid 11305] <... futex resumed>) = 0 [pid 11304] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11309] open(".", O_RDONLY [pid 11308] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] getdents64(3, [pid 5050] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./503/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11305] <... futex resumed>) = 0 [pid 11309] <... open resumed>) = 3 [pid 11308] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] newfstatat(3, "", [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11308] <... fcntl resumed>) = 0 [pid 5051] close(3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./503/cgroup.net", [pid 11309] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11308] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11309] <... futex resumed>) = 1 [pid 11308] <... futex resumed>) = 1 [pid 11305] <... futex resumed>) = 0 [pid 11304] <... futex resumed>) = 0 [pid 5047] umount2("./516/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11304] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./530" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./503/cgroup.net" [pid 11309] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11308] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11304] <... futex resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./516/cgroup.cpu", [pid 11304] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... unlink resumed>) = 0 [pid 5051] mkdir("./531", 0777 [pid 11308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11305] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11309] <... fcntl resumed>) = 0 [pid 11308] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... mkdir resumed>) = 0 [pid 5047] unlink("./516/cgroup.cpu" [pid 5045] getdents64(3, [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11309] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11308] <... openat resumed>) = 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11309] <... futex resumed>) = 1 [pid 5045] close(3 [pid 5050] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11304] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./503" [pid 11304] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11309] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11308] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11304] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 5047] umount2("./516/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11310 attached [pid 11305] <... futex resumed>) = ? [pid 11304] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11310] set_robust_list(0x555556ac56a0, 24 [pid 11304] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] mkdir("./504", 0777 [pid 11309] <... openat resumed>) = 4 [pid 11310] <... set_robust_list resumed>) = 0 [pid 11310] chdir("./531" [pid 5045] <... mkdir resumed>) = 0 [pid 11310] <... chdir resumed>) = 0 [pid 11304] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] newfstatat(AT_FDCWD, "./516/binderfs", [pid 5050] unlink("./529/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11310] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... unlink resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11310] <... prctl resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1064 [pid 5050] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./516/binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11310] setpgid(0, 0 [pid 5050] newfstatat(AT_FDCWD, "./529/binderfs", [pid 5047] <... unlink resumed>) = 0 [pid 11310] <... setpgid resumed>) = 0 [pid 11310] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./516/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./529/binderfs" [pid 11310] <... symlink resumed>) = 0 [pid 11309] +++ killed by SIGIO +++ [pid 11308] +++ killed by SIGIO +++ [pid 11305] +++ killed by SIGIO +++ [pid 11304] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11311 attached [pid 5050] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./516/cgroup", [pid 11311] set_robust_list(0x555556ac56a0, 24 [pid 11310] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1040, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1030, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11311] <... set_robust_list resumed>) = 0 [pid 11310] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./529/cgroup", [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1010 [pid 11311] chdir("./504" [pid 11310] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... restart_syscall resumed>) = 0 [pid 11310] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./516/cgroup" [pid 5046] <... restart_syscall resumed>) = 0 [pid 11311] <... chdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] unlink("./529/cgroup" [pid 5049] umount2("./519", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11311] <... prctl resumed>) = 0 [pid 11310] <... openat resumed>) = 3 [pid 5049] openat(AT_FDCWD, "./519", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./516/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11311] setpgid(0, 0) = 0 [pid 5047] newfstatat(AT_FDCWD, "./516/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./514", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11310] write(3, "1000", 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11310] <... write resumed>) = 4 [pid 5049] newfstatat(3, "", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11310] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11310] <... close resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11310] symlink("/dev/binderfs", "./binderfs" [pid 5049] umount2("./519/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11310] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./519/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11310] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./519/cgroup.cpu" [pid 11310] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11310] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./519/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11310] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./519/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11310] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5049] unlink("./519/binderfs" [pid 5050] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 5046] openat(AT_FDCWD, "./514", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11311] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5047] unlink("./516/blkio.bfq.io_wait_time_recursive" [pid 5046] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5049] umount2("./519/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./519/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11310] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./519/cgroup" [pid 5047] umount2("./516/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11311] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11311] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11310] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11311] <... symlink resumed>) = 0 [pid 11310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./519/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11311] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5050] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./516/cgroup.net", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11312 attached [pid 11310] <... clone3 resumed> => {parent_tid=[1065]}, 88) = 1065 [pid 5049] newfstatat(AT_FDCWD, "./519/blkio.bfq.io_wait_time_recursive", [pid 11312] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11311] <... symlink resumed>) = 0 [pid 11310] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./514/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11312] <... rseq resumed>) = 0 [pid 11311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 11312] set_robust_list(0x7f504ff7f9a0, 24 [pid 11310] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./519/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./516/cgroup.net" [pid 11312] <... set_robust_list resumed>) = 0 [pid 11311] <... openat resumed>) = 3 [pid 11310] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11312] rt_sigprocmask(SIG_SETMASK, [], [pid 11311] write(3, "1000", 4 [pid 11310] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./529/cgroup.net" [pid 11311] <... write resumed>) = 4 [pid 11312] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./519/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 11312] open(".", O_RDONLY [pid 11311] close(3 [pid 5050] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(AT_FDCWD, "./514/cgroup.cpu", [pid 11311] <... close resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./519/cgroup.net", [pid 11312] <... open resumed>) = 3 [pid 11311] symlink("/dev/binderfs", "./binderfs" [pid 5050] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11312] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11311] <... symlink resumed>) = 0 [pid 5049] unlink("./519/cgroup.net" [pid 5047] <... close resumed>) = 0 [pid 11312] <... futex resumed>) = 1 [pid 11311] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11310] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5046] unlink("./514/cgroup.cpu" [pid 11311] <... futex resumed>) = 0 [pid 5050] rmdir("./529" [pid 11312] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11310] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] rmdir("./516" [pid 5046] <... unlink resumed>) = 0 [pid 11312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11310] <... futex resumed>) = 0 [pid 11312] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11311] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11310] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] umount2("./514/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11312] <... fcntl resumed>) = 0 [pid 11311] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] mkdir("./530", 0777 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11312] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11311] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] newfstatat(AT_FDCWD, "./514/binderfs", [pid 11312] <... futex resumed>) = 1 [pid 11311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11310] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] close(3 [pid 11312] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11310] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11311] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./514/binderfs" [pid 11312] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11311] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11310] <... futex resumed>) = 0 [pid 5047] mkdir("./517", 0777 [pid 11311] <... mprotect resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5046] umount2("./514/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... close resumed>) = 0 ./strace-static-x86_64: Process 11313 attached [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11310] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] newfstatat(AT_FDCWD, "./514/cgroup", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1036 [pid 11311] <... clone3 resumed> => {parent_tid=[1011]}, 88) = 1011 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./519"./strace-static-x86_64: Process 11315 attached [pid 11313] set_robust_list(0x555556ac56a0, 24 [pid 11315] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11313] <... set_robust_list resumed>) = 0 [pid 11313] chdir("./517" [pid 5049] <... rmdir resumed>) = 0 [pid 11315] <... rseq resumed>) = 0 [pid 11315] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11313] <... chdir resumed>) = 0 [pid 11315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11315] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11313] <... prctl resumed>) = 0 [pid 11311] rt_sigprocmask(SIG_SETMASK, [], [pid 11313] setpgid(0, 0 [pid 11312] <... openat resumed>) = ? [pid 11311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] mkdir("./520", 0777 [pid 5046] unlink("./514/cgroup"./strace-static-x86_64: Process 11314 attached [pid 11313] <... setpgid resumed>) = 0 [pid 11311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1063 [pid 11315] <... futex resumed>) = 0 [pid 11313] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11311] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 11311] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./514/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11314] set_robust_list(0x555556ac56a0, 24 [pid 11315] open(".", O_RDONLY [pid 11313] <... symlink resumed>) = 0 [pid 11315] <... open resumed>) = 3 [pid 11313] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 11314] <... set_robust_list resumed>) = 0 [pid 11314] chdir("./530" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./514/blkio.bfq.io_wait_time_recursive", [pid 11315] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11313] <... symlink resumed>) = 0 [pid 11315] <... futex resumed>) = 1 [pid 11311] <... futex resumed>) = 0 [pid 11315] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11315] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11311] <... futex resumed>) = 0 [pid 11315] <... fcntl resumed>) = 0 [pid 11313] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11315] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11311] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11316 attached [pid 11314] <... chdir resumed>) = 0 [pid 11315] <... futex resumed>) = 0 [pid 11313] <... symlink resumed>) = 0 [pid 11311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11314] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11316] set_robust_list(0x555556ac56a0, 24 [pid 11315] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11313] <... openat resumed>) = 3 [pid 11315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11315] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11311] <... futex resumed>) = 0 [pid 11316] <... set_robust_list resumed>) = 0 [pid 11315] <... openat resumed>) = 4 [pid 11314] <... prctl resumed>) = 0 [pid 11313] write(3, "1000", 4 [pid 5046] unlink("./514/blkio.bfq.io_wait_time_recursive" [pid 11313] <... write resumed>) = 4 [pid 11313] close(3) = 0 [pid 11313] symlink("/dev/binderfs", "./binderfs" [pid 11316] chdir("./520" [pid 11314] setpgid(0, 0 [pid 11313] <... symlink resumed>) = 0 [pid 11312] +++ killed by SIGIO +++ [pid 11311] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11315] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11310] +++ killed by SIGIO +++ [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1042 [pid 5046] <... unlink resumed>) = 0 [pid 11316] <... chdir resumed>) = 0 [pid 11314] <... setpgid resumed>) = 0 [pid 11315] <... futex resumed>) = ? [pid 5046] umount2("./514/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11313] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11316] <... prctl resumed>) = 0 [pid 11314] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11313] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1064, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11316] setpgid(0, 0 [pid 11313] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11316] <... setpgid resumed>) = 0 [pid 11313] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11316] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11313] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11316] <... symlink resumed>) = 0 [pid 11313] <... mprotect resumed>) = 0 [pid 11314] <... symlink resumed>) = 0 [pid 11315] +++ killed by SIGIO +++ [pid 11313] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11313] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./514/cgroup.net", [pid 11313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11317 attached [pid 11316] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11313] <... clone3 resumed> => {parent_tid=[1037]}, 88) = 1037 [pid 5051] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11316] <... symlink resumed>) = 0 [pid 11314] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... openat resumed>) = 3 [pid 5046] unlink("./514/cgroup.net" [pid 11317] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11313] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(3, "", [pid 11317] <... rseq resumed>) = 0 [pid 11316] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11314] <... symlink resumed>) = 0 [pid 11313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11317] set_robust_list(0x7f504ff7f9a0, 24 [pid 11316] <... symlink resumed>) = 0 [pid 11313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 11317] <... set_robust_list resumed>) = 0 [pid 11316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11314] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11313] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] getdents64(3, [pid 11317] rt_sigprocmask(SIG_SETMASK, [], [pid 11316] <... openat resumed>) = 3 [pid 11313] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11317] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11314] <... symlink resumed>) = 0 [pid 11317] open(".", O_RDONLY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11317] <... open resumed>) = 3 [pid 11316] write(3, "1000", 4 [pid 11314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11311] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 5046] close(3 [pid 11317] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11316] <... write resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11317] <... futex resumed>) = 1 [pid 11316] close(3 [pid 11314] <... openat resumed>) = 3 [pid 11313] <... futex resumed>) = 0 [pid 11317] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11316] <... close resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11316] symlink("/dev/binderfs", "./binderfs" [pid 11314] write(3, "1000", 4 [pid 11313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./531/cgroup.cpu" [pid 5046] rmdir("./514" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1010, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11317] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11316] <... symlink resumed>) = 0 [pid 11314] <... write resumed>) = 4 [pid 11313] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./504", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11317] <... fcntl resumed>) = 0 [pid 11316] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11314] close(3 [pid 11313] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11317] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11316] <... futex resumed>) = 0 [pid 11314] <... close resumed>) = 0 [pid 11313] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11317] <... futex resumed>) = 0 [pid 11316] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./531/binderfs", [pid 11317] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11316] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11314] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./504", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11313] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11317] <... openat resumed>) = 4 [pid 11316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] unlink("./531/binderfs" [pid 11313] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11316] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... openat resumed>) = 3 [pid 5046] mkdir("./515", 0777 [pid 11316] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 11316] <... mprotect resumed>) = 0 [pid 11314] <... symlink resumed>) = 0 [pid 5051] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11314] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11316] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11314] <... futex resumed>) = 0 [pid 5045] getdents64(3, [pid 11314] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11318 attached [pid 11316] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11314] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./531/cgroup", [pid 5045] umount2("./504/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11318] set_robust_list(0x555556ac56a0, 24 [pid 5051] unlink("./531/cgroup" [pid 11318] <... set_robust_list resumed>) = 0 [pid 11316] <... clone3 resumed> => {parent_tid=[1043]}, 88) = 1043 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11319 attached [pid 5045] newfstatat(AT_FDCWD, "./504/cgroup.cpu", [pid 5051] <... unlink resumed>) = 0 [pid 11319] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11318] chdir("./515" [pid 11316] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11319] <... rseq resumed>) = 0 [pid 11314] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11317] +++ killed by SIGIO +++ [pid 11314] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11313] +++ killed by SIGIO +++ [pid 5045] unlink("./504/cgroup.cpu" [pid 11319] set_robust_list(0x7f504ff7f9a0, 24 [pid 11316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11316] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11319] <... set_robust_list resumed>) = 0 [pid 11318] <... chdir resumed>) = 0 [pid 11316] <... futex resumed>) = 0 [pid 11314] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1036, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1032 [pid 11319] rt_sigprocmask(SIG_SETMASK, [], [pid 11318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11316] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11314] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./517", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11319] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11314] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./504/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11319] open(".", O_RDONLY [pid 11318] <... prctl resumed>) = 0 [pid 11314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] openat(AT_FDCWD, "./517", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11320 attached [pid 11319] <... open resumed>) = 3 [pid 11318] setpgid(0, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11320] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11318] <... setpgid resumed>) = 0 [pid 5051] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 11320] <... rseq resumed>) = 0 [pid 11319] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11314] <... clone3 resumed> => {parent_tid=[1064]}, 88) = 1064 [pid 5047] newfstatat(3, "", [pid 5045] newfstatat(AT_FDCWD, "./504/binderfs", [pid 11319] <... futex resumed>) = 1 [pid 11316] <... futex resumed>) = 0 [pid 11314] rt_sigprocmask(SIG_SETMASK, [], [pid 11320] set_robust_list(0x7f504ff7f9a0, 24 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11320] <... set_robust_list resumed>) = 0 [pid 11319] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11318] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11316] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11314] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] getdents64(3, [pid 11319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11316] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11319] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11318] <... symlink resumed>) = 0 [pid 11316] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11318] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 11319] <... fcntl resumed>) = 0 [pid 11314] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./517/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./504/binderfs" [pid 11319] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11318] <... symlink resumed>) = 0 [pid 11314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11320] open(".", O_RDONLY [pid 11319] <... futex resumed>) = 1 [pid 11318] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11316] <... futex resumed>) = 0 [pid 5051] unlink("./531/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./517/cgroup.cpu", [pid 11319] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11316] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./504/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11316] <... futex resumed>) = 0 [pid 5047] unlink("./517/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11320] <... open resumed>) = 3 [pid 11319] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11318] <... symlink resumed>) = 0 [pid 11316] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./504/cgroup", [pid 11320] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11319] <... openat resumed>) = 4 [pid 11318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11316] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] umount2("./517/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11319] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11316] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11318] <... openat resumed>) = 3 [pid 5051] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11320] <... futex resumed>) = 1 [pid 11319] <... futex resumed>) = ? [pid 11314] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./517/binderfs", [pid 11320] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11319] +++ killed by SIGIO +++ [pid 11318] write(3, "1000", 4 [pid 11314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./504/cgroup" [pid 11320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11318] <... write resumed>) = 4 [pid 11314] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 11320] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11318] close(3 [pid 5047] unlink("./517/binderfs" [pid 11320] <... fcntl resumed>) = 0 [pid 11318] <... close resumed>) = 0 [pid 11314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./531" [pid 5045] <... unlink resumed>) = 0 [pid 11320] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11318] symlink("/dev/binderfs", "./binderfs" [pid 11314] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11320] <... futex resumed>) = 0 [pid 11316] +++ killed by SIGIO +++ [pid 11314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./517/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./504/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11320] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11314] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11318] <... symlink resumed>) = 0 [pid 11314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1042, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] newfstatat(AT_FDCWD, "./504/blkio.bfq.io_wait_time_recursive", [pid 11318] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./532", 0777 [pid 5047] newfstatat(AT_FDCWD, "./517/cgroup", [pid 11320] <... openat resumed>) = 4 [pid 11318] <... futex resumed>) = 0 [pid 11314] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... mkdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11320] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11318] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11314] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] unlink("./517/cgroup" [pid 5045] unlink("./504/blkio.bfq.io_wait_time_recursive" [pid 11320] <... futex resumed>) = ? [pid 11318] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] umount2("./520", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11321 attached [pid 11320] +++ killed by SIGIO +++ [pid 11318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./517/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./504/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11321] set_robust_list(0x555556ac56a0, 24 [pid 11318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11314] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11321] <... set_robust_list resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./517/blkio.bfq.io_wait_time_recursive", [pid 5045] newfstatat(AT_FDCWD, "./504/cgroup.net", [pid 11318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11318] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1063, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] unlink("./517/blkio.bfq.io_wait_time_recursive" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11321] chdir("./532" [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11318] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] openat(AT_FDCWD, "./520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11321] <... chdir resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./504/cgroup.net" [pid 11321] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] umount2("./517/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11321] <... prctl resumed>) = 0 [pid 11318] <... mprotect resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11321] setpgid(0, 0 [pid 11318] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 5047] newfstatat(AT_FDCWD, "./517/cgroup.net", [pid 11321] <... setpgid resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 11321] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11318] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] getdents64(3, [pid 11321] <... symlink resumed>) = 0 [pid 11318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11322 attached [pid 11321] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... openat resumed>) = 3 [pid 5049] umount2("./520/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./517/cgroup.net" [pid 5045] close(3 [pid 11322] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11321] <... symlink resumed>) = 0 [pid 11318] <... clone3 resumed> => {parent_tid=[1033]}, 88) = 1033 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1066 [pid 5050] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 11322] set_robust_list(0x7f504ff7f9a0, 24 [pid 11321] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11318] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./520/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 5045] rmdir("./504" [pid 11322] <... set_robust_list resumed>) = 0 [pid 11321] <... symlink resumed>) = 0 [pid 11318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 11322] rt_sigprocmask(SIG_SETMASK, [], [pid 11318] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... rmdir resumed>) = 0 [pid 11321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./520/cgroup.cpu" [pid 5047] close(3 [pid 5045] mkdir("./505", 0777 [pid 11318] <... futex resumed>) = 0 [pid 11318] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... close resumed>) = 0 [pid 11321] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11322] open(".", O_RDONLY [pid 11321] write(3, "1000", 4) = 4 [pid 11321] close(3) = 0 [pid 11322] <... open resumed>) = 3 [pid 5050] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./517" [pid 5049] umount2("./520/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11322] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11321] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11322] <... futex resumed>) = 1 [pid 11321] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11318] <... futex resumed>) = 0 [pid 11318] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11321] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11318] <... futex resumed>) = 0 [pid 11318] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11321] <... futex resumed>) = 0 [pid 11321] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11321] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11322] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./518", 0777 [pid 11322] <... fcntl resumed>) = 0 [pid 11321] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./520/binderfs", [pid 11322] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11321] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./530/cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11321] <... mprotect resumed>) = 0 [pid 5049] unlink("./520/binderfs" [pid 11322] <... futex resumed>) = 1 [pid 11321] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11318] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11322] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 11323 attached ) = -1 EAGAIN (Resource temporarily unavailable) [pid 11318] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11322] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11318] <... futex resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11323] set_robust_list(0x555556ac56a0, 24 [pid 11321] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11318] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./530/binderfs", [pid 5049] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11323] <... set_robust_list resumed>) = 0 [pid 11321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11324 attached [pid 11323] chdir("./505" [pid 11322] <... openat resumed>) = 4 [pid 11318] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1012 [pid 11324] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11322] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11318] restart_syscall(<... resuming interrupted futex ...> [pid 5050] unlink("./530/binderfs" [pid 11323] <... chdir resumed>) = 0 [pid 11321] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 5049] newfstatat(AT_FDCWD, "./520/cgroup", [pid 11323] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11321] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11323] <... prctl resumed>) = 0 [pid 11321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11323] setpgid(0, 0 [pid 11321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5049] unlink("./520/cgroup" [pid 11323] <... setpgid resumed>) = 0 [pid 11324] <... rseq resumed>) = 0 [pid 11321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11318] <... restart_syscall resumed>) = ? [pid 5050] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11323] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11322] +++ killed by SIGIO +++ [pid 5049] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11323] <... symlink resumed>) = 0 [pid 5049] unlink("./520/blkio.bfq.io_wait_time_recursive") = 0 [pid 11323] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 5049] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./520/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11324] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] newfstatat(AT_FDCWD, "./530/cgroup", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1038 [pid 11324] <... set_robust_list resumed>) = 0 [pid 11318] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11323] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] unlink("./520/cgroup.net" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1032, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11324] open(".", O_RDONLY [pid 11323] <... symlink resumed>) = 0 [pid 5050] unlink("./530/cgroup" [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11325 attached [pid 11324] <... open resumed>) = 3 [pid 11325] set_robust_list(0x555556ac56a0, 24 [pid 11323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] getdents64(3, [pid 11325] <... set_robust_list resumed>) = 0 [pid 11324] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11323] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11325] chdir("./518" [pid 11324] <... futex resumed>) = 1 [pid 11321] <... futex resumed>) = 0 [pid 5050] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11324] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11324] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11321] <... futex resumed>) = 0 [pid 5049] close(3 [pid 11325] <... chdir resumed>) = 0 [pid 11324] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11323] write(3, "1000", 4 [pid 11321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... close resumed>) = 0 [pid 11325] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11324] <... fcntl resumed>) = 0 [pid 11323] <... write resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 11325] <... prctl resumed>) = 0 [pid 11324] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11323] close(3 [pid 5049] rmdir("./520" [pid 5046] umount2("./515", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11325] setpgid(0, 0 [pid 11324] <... futex resumed>) = 1 [pid 11323] <... close resumed>) = 0 [pid 11321] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11325] <... setpgid resumed>) = 0 [pid 11324] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11323] symlink("/dev/binderfs", "./binderfs" [pid 11321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11325] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11324] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11323] <... symlink resumed>) = 0 [pid 11321] <... futex resumed>) = 0 [pid 5050] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 5046] openat(AT_FDCWD, "./515", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11324] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] mkdir("./521", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 11325] <... symlink resumed>) = 0 [pid 5050] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 11323] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11324] <... openat resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 11324] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11325] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11323] <... futex resumed>) = 0 [pid 11321] <... futex resumed>) = ? [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11325] <... symlink resumed>) = 0 [pid 11324] +++ killed by SIGIO +++ [pid 11323] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11323] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11323] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11323] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] unlink("./530/cgroup.net" [pid 5046] getdents64(3, [pid 11325] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11321] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11326 attached [pid 5050] getdents64(3, [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1044 [pid 5046] umount2("./515/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11323] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1066, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11326] set_robust_list(0x555556ac56a0, 24 [pid 11325] <... openat resumed>) = 3 [pid 11323] <... mprotect resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11326] <... set_robust_list resumed>) = 0 [pid 11325] write(3, "1000", 4 [pid 5050] close(3 [pid 5046] newfstatat(AT_FDCWD, "./515/cgroup.cpu", [pid 11323] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11323] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11326] chdir("./521" [pid 11325] <... write resumed>) = 4 [pid 11323] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11327 attached [pid 11326] <... chdir resumed>) = 0 [pid 11325] close(3 [pid 5051] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11325] <... close resumed>) = 0 [pid 11325] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... openat resumed>) = 3 [pid 5050] rmdir("./530" [pid 5046] unlink("./515/cgroup.cpu" [pid 11323] <... clone3 resumed> => {parent_tid=[1013]}, 88) = 1013 [pid 5051] newfstatat(3, "", [pid 11327] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11325] <... symlink resumed>) = 0 [pid 11323] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11327] <... rseq resumed>) = 0 [pid 11325] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 11327] set_robust_list(0x7f504ff7f9a0, 24 [pid 11326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11325] <... futex resumed>) = 0 [pid 11323] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] mkdir("./531", 0777 [pid 5046] umount2("./515/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11327] <... set_robust_list resumed>) = 0 [pid 11326] <... prctl resumed>) = 0 [pid 11325] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11323] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11327] rt_sigprocmask(SIG_SETMASK, [], [pid 11326] setpgid(0, 0 [pid 11325] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11323] <... futex resumed>) = 0 [pid 5051] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11326] <... setpgid resumed>) = 0 [pid 11325] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11323] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11327] open(".", O_RDONLY [pid 11325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 5050] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./515/binderfs", [pid 11327] <... open resumed>) = 3 [pid 11326] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11327] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11325] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11326] <... symlink resumed>) = 0 [pid 11327] <... futex resumed>) = 1 [pid 11325] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11323] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./515/binderfs" [pid 11326] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11323] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./532/cgroup.cpu" [pid 11327] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11325] <... mprotect resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11327] <... fcntl resumed>) = 0 [pid 11325] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11327] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11327] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11325] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 11328 attached [pid 11325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] umount2("./515/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11326] <... symlink resumed>) = 0 [pid 11328] set_robust_list(0x555556ac56a0, 24 [pid 11326] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11328] <... set_robust_list resumed>) = 0 [pid 11325] <... clone3 resumed> => {parent_tid=[1039]}, 88) = 1039 [pid 5046] newfstatat(AT_FDCWD, "./515/cgroup", [pid 11328] chdir("./531" [pid 11325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11328] <... chdir resumed>) = 0 [pid 11325] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11328] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11325] <... futex resumed>) = 0 [pid 5046] unlink("./515/cgroup" [pid 11328] <... prctl resumed>) = 0 [pid 11328] setpgid(0, 0 [pid 11325] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11326] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11329 attached [pid 11328] <... setpgid resumed>) = 0 [pid 11327] <... futex resumed>) = 0 [pid 11326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11323] <... futex resumed>) = 1 [pid 5051] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11327] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11329] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11328] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11326] <... openat resumed>) = 3 [pid 11323] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./515/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11329] <... rseq resumed>) = 0 [pid 11326] write(3, "1000", 4 [pid 11323] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./532/binderfs", [pid 11329] set_robust_list(0x7f504ff7f9a0, 24 [pid 11326] <... write resumed>) = 4 [pid 11323] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11329] <... set_robust_list resumed>) = 0 [pid 11326] close(3 [pid 11329] rt_sigprocmask(SIG_SETMASK, [], [pid 11323] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11326] <... close resumed>) = 0 [pid 11323] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11329] open(".", O_RDONLY [pid 11328] <... symlink resumed>) = 0 [pid 11327] <... futex resumed>) = 0 [pid 11326] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11329] <... open resumed>) = 3 [pid 11328] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11327] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5046] newfstatat(AT_FDCWD, "./515/blkio.bfq.io_wait_time_recursive", [pid 11328] <... symlink resumed>) = 0 [pid 11327] <... openat resumed>) = 4 [pid 11326] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11329] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11326] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./532/binderfs" [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1065 [pid 11329] <... futex resumed>) = 1 [pid 11326] <... futex resumed>) = 0 [pid 11326] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11325] <... futex resumed>) = 0 [pid 5046] unlink("./515/blkio.bfq.io_wait_time_recursive" [pid 11329] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11328] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11325] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 11327] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... unlink resumed>) = 0 [pid 11329] <... fcntl resumed>) = 0 [pid 11328] <... symlink resumed>) = 0 [pid 11326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11325] <... futex resumed>) = 0 [pid 11329] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11327] +++ killed by SIGIO +++ [pid 11326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11325] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11323] <... futex resumed>) = ? [pid 5046] umount2("./515/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11329] <... futex resumed>) = 0 [pid 11326] <... mmap resumed>) = 0x7f504ff5f000 [pid 11325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11329] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11326] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11325] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./515/cgroup.net", [pid 11329] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11326] <... mprotect resumed>) = 0 [pid 11325] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./532/cgroup", [pid 11329] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11326] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11328] <... openat resumed>) = 3 [pid 11325] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11328] write(3, "1000", 4 [pid 5046] unlink("./515/cgroup.net" [pid 11329] <... openat resumed>) = 4 [pid 11326] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./532/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 11326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11328] <... write resumed>) = 4 [pid 11323] +++ killed by SIGIO +++ [pid 5046] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5051] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1012, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] umount2("./505", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11329] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 5045] openat(AT_FDCWD, "./505", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11330 attached [pid 11328] close(3 [pid 11326] <... clone3 resumed> => {parent_tid=[1045]}, 88) = 1045 [pid 11325] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11329] +++ killed by SIGIO +++ [pid 11328] <... close resumed>) = 0 [pid 11326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5051] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(3, "", [pid 11326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11326] <... futex resumed>) = 0 [pid 5045] getdents64(3, [pid 11326] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11328] symlink("/dev/binderfs", "./binderfs" [pid 11325] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 5051] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 5045] umount2("./505/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11328] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./505/cgroup.cpu", [pid 5051] unlink("./532/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11330] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11328] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5046] rmdir("./515" [pid 11330] <... rseq resumed>) = 0 [pid 11328] <... futex resumed>) = 0 [pid 5045] unlink("./505/cgroup.cpu" [pid 11330] set_robust_list(0x7f504ff7f9a0, 24 [pid 11328] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1038, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... rmdir resumed>) = 0 [pid 11330] <... set_robust_list resumed>) = 0 [pid 11328] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] umount2("./518", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11330] rt_sigprocmask(SIG_SETMASK, [], [pid 11328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11330] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./516", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 11330] open(".", O_RDONLY [pid 11328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] openat(AT_FDCWD, "./518", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11330] <... open resumed>) = 3 [pid 5045] umount2("./505/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./505/binderfs", [pid 5047] <... openat resumed>) = 3 [pid 11328] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./505/binderfs" [pid 11330] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11328] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] close(3 [pid 5047] newfstatat(3, "", [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11330] <... futex resumed>) = 1 [pid 11328] <... mprotect resumed>) = 0 [pid 11326] <... futex resumed>) = 0 [pid 11326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 11326] <... futex resumed>) = 0 [pid 5045] umount2("./505/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11328] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11326] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./532" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11330] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./505/cgroup", [pid 11328] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11330] <... fcntl resumed>) = 0 [pid 5045] unlink("./505/cgroup" [pid 5051] <... rmdir resumed>) = 0 [pid 11328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11330] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./505/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./518/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./505/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./505/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11331 attached ./strace-static-x86_64: Process 11332 attached [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11330] <... futex resumed>) = 1 [pid 11328] <... clone3 resumed> => {parent_tid=[1066]}, 88) = 1066 [pid 5051] mkdir("./533", 0777 [pid 5047] newfstatat(AT_FDCWD, "./518/cgroup.cpu", [pid 11332] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11331] set_robust_list(0x555556ac56a0, 24 [pid 11332] <... rseq resumed>) = 0 [pid 11331] <... set_robust_list resumed>) = 0 [pid 11326] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11332] set_robust_list(0x7f504ff7f9a0, 24 [pid 11331] chdir("./516" [pid 11326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11332] <... set_robust_list resumed>) = 0 [pid 11330] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5047] unlink("./518/cgroup.cpu" [pid 11332] rt_sigprocmask(SIG_SETMASK, [], [pid 11331] <... chdir resumed>) = 0 [pid 11326] <... futex resumed>) = 0 [pid 5045] umount2("./505/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11326] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11332] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11331] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11330] <... openat resumed>) = ? [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11331] <... prctl resumed>) = 0 [pid 11328] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./518/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./505/cgroup.net", [pid 11331] setpgid(0, 0 [pid 11328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./518/binderfs", [pid 11328] <... futex resumed>) = 1 [pid 11332] <... futex resumed>) = 0 [pid 11331] <... setpgid resumed>) = 0 [pid 11328] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./505/cgroup.net" [pid 11332] open(".", O_RDONLY [pid 11331] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11332] <... open resumed>) = 3 [pid 5047] unlink("./518/binderfs" [pid 11332] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11331] <... symlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 11332] <... futex resumed>) = 1 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3 [pid 11332] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11328] <... futex resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11333 attached [pid 11332] <... futex resumed>) = 0 [pid 11328] <... futex resumed>) = 1 [pid 5047] umount2("./518/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11333] set_robust_list(0x555556ac56a0, 24 [pid 11332] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11331] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11328] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] rmdir("./505" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11333] <... set_robust_list resumed>) = 0 [pid 11332] <... fcntl resumed>) = 0 [pid 11331] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./518/cgroup", [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1034 [pid 5045] <... rmdir resumed>) = 0 [pid 11333] chdir("./533" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1068 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./518/cgroup" [pid 11332] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11328] <... futex resumed>) = 0 [pid 11332] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11331] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11333] <... chdir resumed>) = 0 [pid 11332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11331] <... symlink resumed>) = 0 [pid 11330] +++ killed by SIGIO +++ [pid 11328] <... futex resumed>) = 0 [pid 11326] +++ killed by SIGIO +++ [pid 5047] umount2("./518/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./506", 0777 [pid 11333] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11332] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11328] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 11332] <... openat resumed>) = 4 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1044, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] newfstatat(AT_FDCWD, "./518/blkio.bfq.io_wait_time_recursive", [pid 11333] <... prctl resumed>) = 0 [pid 11331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11333] setpgid(0, 0 [pid 11332] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11331] <... openat resumed>) = 3 [pid 11328] <... futex resumed>) = 3 [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11333] <... setpgid resumed>) = 0 [pid 11333] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./518/blkio.bfq.io_wait_time_recursive" [pid 11331] write(3, "1000", 4) = 4 [pid 11331] close(3) = 0 [pid 5049] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11332] +++ killed by SIGIO +++ [pid 11331] symlink("/dev/binderfs", "./binderfs" [pid 11328] +++ killed by SIGIO +++ [pid 5049] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11331] <... symlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11333] <... symlink resumed>) = 0 [pid 11331] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 11331] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11333] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11331] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 ./strace-static-x86_64: Process 11334 attached [pid 11333] <... symlink resumed>) = 0 [pid 11331] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1065, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./518/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11334] set_robust_list(0x555556ac56a0, 24 [pid 11331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11334] <... set_robust_list resumed>) = 0 [pid 11333] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1014 [pid 11334] chdir("./506" [pid 11331] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./518/cgroup.net", [pid 11331] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] unlink("./521/cgroup.cpu" [pid 11334] <... chdir resumed>) = 0 [pid 11333] <... symlink resumed>) = 0 [pid 11331] <... mprotect resumed>) = 0 [pid 5050] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./518/cgroup.net" [pid 5050] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11334] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11331] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... openat resumed>) = 3 [pid 5049] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11334] <... prctl resumed>) = 0 [pid 11331] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11334] setpgid(0, 0 [pid 11331] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11334] <... setpgid resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11333] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 11333] write(3, "1000", 4 [pid 5047] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, ./strace-static-x86_64: Process 11335 attached [pid 11334] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11333] <... write resumed>) = 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(AT_FDCWD, "./521/binderfs", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11335] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11334] <... symlink resumed>) = 0 [pid 11333] close(3 [pid 11331] <... clone3 resumed> => {parent_tid=[1035]}, 88) = 1035 [pid 5050] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11335] <... rseq resumed>) = 0 [pid 11333] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./521/binderfs" [pid 5047] close(3 [pid 11335] set_robust_list(0x7f504ff7f9a0, 24 [pid 11333] symlink("/dev/binderfs", "./binderfs" [pid 11331] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 5049] <... unlink resumed>) = 0 [pid 11335] <... set_robust_list resumed>) = 0 [pid 11335] rt_sigprocmask(SIG_SETMASK, [], [pid 11334] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11335] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11334] <... symlink resumed>) = 0 [pid 11333] <... symlink resumed>) = 0 [pid 11331] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 11335] open(".", O_RDONLY [pid 11334] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11333] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11331] <... futex resumed>) = 0 [pid 5050] unlink("./531/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./521/cgroup", [pid 5047] rmdir("./518" [pid 11335] <... open resumed>) = 3 [pid 11334] <... symlink resumed>) = 0 [pid 11333] <... futex resumed>) = 0 [pid 11331] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./521/cgroup") = 0 [pid 11334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11333] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 [pid 11333] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11335] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11335] <... futex resumed>) = 1 [pid 11331] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11335] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11331] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 11335] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11334] <... openat resumed>) = 3 [pid 11333] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11331] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./531/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] mkdir("./519", 0777 [pid 11335] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11334] write(3, "1000", 4 [pid 11333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11331] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 11335] <... fcntl resumed>) = 0 [pid 11334] <... write resumed>) = 4 [pid 11335] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11334] close(3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11335] <... futex resumed>) = 1 [pid 11334] <... close resumed>) = 0 [pid 11333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11331] <... futex resumed>) = 0 [pid 5050] unlink("./531/binderfs" [pid 11335] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11334] symlink("/dev/binderfs", "./binderfs" [pid 11333] <... mmap resumed>) = 0x7f504ff5f000 [pid 11335] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11331] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11334] <... symlink resumed>) = 0 [pid 11333] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11335] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11334] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11333] <... mprotect resumed>) = 0 [pid 11331] <... futex resumed>) = 0 [pid 5050] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11335] <... openat resumed>) = 4 [pid 11334] <... futex resumed>) = 0 [pid 11333] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] newfstatat(AT_FDCWD, "./521/cgroup.net", [pid 11333] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11333] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11335] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11334] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11331] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11335] <... futex resumed>) = ? [pid 11334] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] unlink("./521/cgroup.net" [pid 11335] +++ killed by SIGIO +++ [pid 11334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./531/cgroup", ./strace-static-x86_64: Process 11337 attached ./strace-static-x86_64: Process 11336 attached [pid 11334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11337] set_robust_list(0x555556ac56a0, 24 [pid 11336] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11333] <... clone3 resumed> => {parent_tid=[1069]}, 88) = 1069 [pid 5050] unlink("./531/cgroup" [pid 5049] getdents64(3, [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1040 [pid 11337] <... set_robust_list resumed>) = 0 [pid 11336] <... rseq resumed>) = 0 [pid 11334] <... mmap resumed>) = 0x7f504ff5f000 [pid 11331] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11336] set_robust_list(0x7f504ff7f9a0, 24 [pid 11334] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] close(3 [pid 11336] <... set_robust_list resumed>) = 0 [pid 11334] <... mprotect resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1034, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11336] rt_sigprocmask(SIG_SETMASK, [], [pid 11337] chdir("./519" [pid 11336] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11334] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11333] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] rmdir("./521" [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11337] <... chdir resumed>) = 0 [pid 11336] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11334] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 11337] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 11338 attached ) = 0 [pid 11336] <... futex resumed>) = 0 [pid 11333] <... futex resumed>) = 1 [pid 5049] mkdir("./522", 0777 [pid 11338] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11337] setpgid(0, 0 [pid 11336] open(".", O_RDONLY [pid 11334] <... clone3 resumed> => {parent_tid=[1015]}, 88) = 1015 [pid 11333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] umount2("./516", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11338] <... rseq resumed>) = 0 [pid 11337] <... setpgid resumed>) = 0 [pid 11336] <... open resumed>) = 3 [pid 11338] set_robust_list(0x7f504ff7f9a0, 24 [pid 11334] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11338] <... set_robust_list resumed>) = 0 [pid 11334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11337] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11338] rt_sigprocmask(SIG_SETMASK, [], [pid 11337] <... symlink resumed>) = 0 [pid 11334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11336] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./516", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11334] <... futex resumed>) = 0 [pid 11338] open(".", O_RDONLY [pid 11337] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11336] <... futex resumed>) = 1 [pid 11334] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11333] <... futex resumed>) = 0 [pid 5050] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 11338] <... open resumed>) = 3 [pid 11337] <... symlink resumed>) = 0 [pid 11336] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 11339 attached [pid 11338] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(3, "", [pid 11336] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11338] <... futex resumed>) = 1 [pid 11334] <... futex resumed>) = 0 [pid 5046] getdents64(3, [pid 11338] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11334] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1046 [pid 11338] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11334] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11338] <... fcntl resumed>) = 0 [pid 11337] <... symlink resumed>) = 0 [pid 11336] <... fcntl resumed>) = 0 [pid 11333] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11339] set_robust_list(0x555556ac56a0, 24 [pid 11338] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11336] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./531/cgroup.net" [pid 5046] umount2("./516/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11339] <... set_robust_list resumed>) = 0 [pid 11338] <... futex resumed>) = 1 [pid 11336] <... futex resumed>) = 0 [pid 11334] <... futex resumed>) = 0 [pid 11333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11338] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11339] chdir("./522" [pid 11338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11336] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11334] <... futex resumed>) = 0 [pid 11333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./516/cgroup.cpu", [pid 11338] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11334] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11337] <... openat resumed>) = 3 [pid 11336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11333] <... futex resumed>) = 0 [pid 11336] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11338] <... openat resumed>) = 4 [pid 11336] <... openat resumed>) = 4 [pid 11339] <... chdir resumed>) = 0 [pid 11337] write(3, "1000", 4 [pid 5050] getdents64(3, [pid 5046] unlink("./516/cgroup.cpu" [pid 11339] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11338] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11339] <... prctl resumed>) = 0 [pid 11334] <... futex resumed>) = ? [pid 5050] close(3 [pid 5046] <... unlink resumed>) = 0 [pid 11339] setpgid(0, 0 [pid 11338] +++ killed by SIGIO +++ [pid 11337] <... write resumed>) = 4 [pid 11336] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11333] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11339] <... setpgid resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 11339] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11337] close(3 [pid 11334] +++ killed by SIGIO +++ [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1014, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11337] <... close resumed>) = 0 [pid 5050] rmdir("./531" [pid 5046] umount2("./516/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11337] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11337] <... symlink resumed>) = 0 [pid 11339] <... symlink resumed>) = 0 [pid 11339] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./516/binderfs", [pid 11339] <... symlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./506", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./516/binderfs" [pid 11339] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5045] openat(AT_FDCWD, "./506", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11339] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5046] umount2("./516/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] mkdir("./532", 0777 [pid 11339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11337] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(3, "", [pid 11339] <... openat resumed>) = 3 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11339] write(3, "1000", 4 [pid 5045] getdents64(3, [pid 11339] <... write resumed>) = 4 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11339] close(3 [pid 11337] <... futex resumed>) = 0 [pid 5045] umount2("./506/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11339] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11339] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11337] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./516/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./506/cgroup.cpu", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./516/cgroup" [pid 11339] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11336] +++ killed by SIGIO +++ [pid 11333] +++ killed by SIGIO +++ [pid 5045] unlink("./506/cgroup.cpu" [pid 11339] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11339] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11339] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] umount2("./506/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11339] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] newfstatat(AT_FDCWD, "./506/binderfs", [pid 11339] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11339] <... mprotect resumed>) = 0 [pid 11337] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1068, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] umount2("./516/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./506/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11340 attached [pid 11339] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1067 [pid 5046] newfstatat(AT_FDCWD, "./516/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./506/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11340] set_robust_list(0x555556ac56a0, 24 [pid 11339] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11340] <... set_robust_list resumed>) = 0 [pid 11339] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11337] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./516/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./506/cgroup", ./strace-static-x86_64: Process 11341 attached [pid 11340] chdir("./532" [pid 11337] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11341] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11340] <... chdir resumed>) = 0 [pid 11339] <... clone3 resumed> => {parent_tid=[1047]}, 88) = 1047 [pid 11337] <... mprotect resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11341] <... rseq resumed>) = 0 [pid 11340] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11339] rt_sigprocmask(SIG_SETMASK, [], [pid 11337] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(3, "", [pid 5046] umount2("./516/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./506/cgroup" [pid 11341] set_robust_list(0x7f504ff7f9a0, 24 [pid 11340] <... prctl resumed>) = 0 [pid 11339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11337] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11341] <... set_robust_list resumed>) = 0 [pid 11340] setpgid(0, 0 [pid 11339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./516/cgroup.net", ./strace-static-x86_64: Process 11342 attached [pid 11341] rt_sigprocmask(SIG_SETMASK, [], [pid 11340] <... setpgid resumed>) = 0 [pid 11339] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11342] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11340] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11339] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11337] <... clone3 resumed> => {parent_tid=[1041]}, 88) = 1041 [pid 5051] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./506/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11342] <... rseq resumed>) = 0 [pid 11341] open(".", O_RDONLY [pid 11337] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./516/cgroup.net" [pid 11342] set_robust_list(0x7f504ff7f9a0, 24 [pid 11341] <... open resumed>) = 3 [pid 11340] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11341] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11340] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./506/blkio.bfq.io_wait_time_recursive", [pid 11337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11342] <... set_robust_list resumed>) = 0 [pid 11341] <... futex resumed>) = 1 [pid 11340] <... symlink resumed>) = 0 [pid 11339] <... futex resumed>) = 0 [pid 11337] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./533/cgroup.cpu" [pid 5046] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11342] rt_sigprocmask(SIG_SETMASK, [], [pid 11341] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11340] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./506/blkio.bfq.io_wait_time_recursive" [pid 11342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11339] <... futex resumed>) = 0 [pid 11337] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] close(3 [pid 11342] open(".", O_RDONLY [pid 11341] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11340] <... symlink resumed>) = 0 [pid 11339] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11342] <... open resumed>) = 3 [pid 11341] <... fcntl resumed>) = 0 [pid 11340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 11342] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./533/binderfs", [pid 5046] rmdir("./516" [pid 11342] <... futex resumed>) = 1 [pid 11341] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11340] <... openat resumed>) = 3 [pid 11337] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11342] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11341] <... futex resumed>) = 1 [pid 11340] write(3, "1000", 4 [pid 11339] <... futex resumed>) = 0 [pid 11337] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./533/binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 5045] umount2("./506/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11341] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11340] <... write resumed>) = 4 [pid 11339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11342] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11340] close(3 [pid 11339] <... futex resumed>) = 0 [pid 11337] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5046] mkdir("./517", 0777 [pid 5045] newfstatat(AT_FDCWD, "./506/cgroup.net", [pid 11342] <... fcntl resumed>) = 0 [pid 11341] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11340] <... close resumed>) = 0 [pid 11339] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11342] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11340] symlink("/dev/binderfs", "./binderfs" [pid 11337] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11342] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11341] <... openat resumed>) = 4 [pid 11337] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./506/cgroup.net" [pid 11342] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11341] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11337] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./533/cgroup", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11340] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11339] <... futex resumed>) = ? [pid 5045] <... unlink resumed>) = 0 [pid 11342] <... openat resumed>) = 4 [pid 11341] +++ killed by SIGIO +++ [pid 11340] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./533/cgroup" [pid 11340] <... futex resumed>) = 0 [pid 11342] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11337] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11340] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 5045] close(3) = 0 [pid 5045] rmdir("./506" [pid 11340] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11342] <... futex resumed>) = ? [pid 11340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11342] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11343 attached [pid 5045] <... rmdir resumed>) = 0 [pid 11343] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11343] chdir("./517" [pid 11340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11339] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", [pid 11343] <... chdir resumed>) = 0 [pid 11340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./507", 0777 [pid 11343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11340] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./533/blkio.bfq.io_wait_time_recursive" [pid 5045] <... mkdir resumed>) = 0 [pid 11343] <... prctl resumed>) = 0 [pid 11340] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1046, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... restart_syscall resumed>) = 0 [pid 11343] setpgid(0, 0 [pid 11340] <... mprotect resumed>) = 0 [pid 5051] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11343] <... setpgid resumed>) = 0 [pid 11340] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11343] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] newfstatat(AT_FDCWD, "./533/cgroup.net", [pid 11340] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11337] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1036 [pid 11343] <... symlink resumed>) = 0 [pid 5051] unlink("./533/cgroup.net" [pid 11343] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu"./strace-static-x86_64: Process 11344 attached [pid 11340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11344] set_robust_list(0x555556ac56a0, 24 [pid 5051] getdents64(3, [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1040, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11344] <... set_robust_list resumed>) = 0 [pid 5051] close(3 [pid 5049] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11345 attached [pid 11344] chdir("./507" [pid 5051] <... close resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1016 [pid 11345] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11343] <... symlink resumed>) = 0 [pid 11340] <... clone3 resumed> => {parent_tid=[1068]}, 88) = 1068 [pid 5049] <... openat resumed>) = 3 [pid 11343] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11340] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] rmdir("./533" [pid 11345] <... rseq resumed>) = 0 [pid 11344] <... chdir resumed>) = 0 [pid 11343] <... symlink resumed>) = 0 [pid 11340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5047] umount2("./519", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11345] set_robust_list(0x7f504ff7f9a0, 24 [pid 11344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./534", 0777 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11345] <... set_robust_list resumed>) = 0 [pid 11344] <... prctl resumed>) = 0 [pid 11343] <... openat resumed>) = 3 [pid 11340] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./519", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11345] rt_sigprocmask(SIG_SETMASK, [], [pid 11344] setpgid(0, 0 [pid 11343] write(3, "1000", 4 [pid 11340] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 11345] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11344] <... setpgid resumed>) = 0 [pid 11343] <... write resumed>) = 4 [pid 5047] <... openat resumed>) = 3 [pid 11345] open(".", O_RDONLY [pid 11343] close(3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11344] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11343] <... close resumed>) = 0 [pid 11343] symlink("/dev/binderfs", "./binderfs" [pid 5049] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11345] <... open resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 11345] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11344] <... symlink resumed>) = 0 [pid 11345] <... futex resumed>) = 1 [pid 11344] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11343] <... symlink resumed>) = 0 [pid 11340] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11346 attached [pid 11345] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11344] <... symlink resumed>) = 0 [pid 11343] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 5047] getdents64(3, [pid 11346] set_robust_list(0x555556ac56a0, 24 [pid 11345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11343] <... futex resumed>) = 0 [pid 11346] <... set_robust_list resumed>) = 0 [pid 11345] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11340] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1070 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11344] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11343] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11346] chdir("./534" [pid 11345] <... fcntl resumed>) = 0 [pid 11343] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] umount2("./519/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11346] <... chdir resumed>) = 0 [pid 11345] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11340] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./522/cgroup.cpu" [pid 11346] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11345] <... futex resumed>) = 0 [pid 11344] <... symlink resumed>) = 0 [pid 11343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11346] <... prctl resumed>) = 0 [pid 11345] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11346] setpgid(0, 0 [pid 11345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./519/cgroup.cpu", [pid 11343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11346] <... setpgid resumed>) = 0 [pid 11345] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11340] <... futex resumed>) = 0 [pid 5049] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11346] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11345] <... openat resumed>) = 4 [pid 11344] <... openat resumed>) = 3 [pid 11343] <... mmap resumed>) = 0x7f504ff5f000 [pid 11340] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11344] write(3, "1000", 4 [pid 11343] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] newfstatat(AT_FDCWD, "./522/binderfs", [pid 5047] unlink("./519/cgroup.cpu" [pid 11346] <... symlink resumed>) = 0 [pid 11344] <... write resumed>) = 4 [pid 11343] <... mprotect resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11346] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11345] +++ killed by SIGIO +++ [pid 11344] close(3 [pid 11343] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11344] <... close resumed>) = 0 [pid 5047] umount2("./519/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11346] <... symlink resumed>) = 0 [pid 11344] symlink("/dev/binderfs", "./binderfs" [pid 11343] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] unlink("./522/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11346] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11344] <... symlink resumed>) = 0 [pid 11344] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] newfstatat(AT_FDCWD, "./519/binderfs", [pid 11346] <... symlink resumed>) = 0 [pid 11344] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11344] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] unlink("./519/binderfs"./strace-static-x86_64: Process 11347 attached [pid 11344] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11343] <... clone3 resumed> => {parent_tid=[1037]}, 88) = 1037 [pid 5049] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11343] rt_sigprocmask(SIG_SETMASK, [], [pid 11344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] umount2("./519/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11347] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11346] <... openat resumed>) = 3 [pid 11344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11347] <... rseq resumed>) = 0 [pid 11346] write(3, "1000", 4 [pid 11344] <... mmap resumed>) = 0x7f504ff5f000 [pid 11343] <... futex resumed>) = 0 [pid 11340] +++ killed by SIGIO +++ [pid 5049] newfstatat(AT_FDCWD, "./522/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./519/cgroup", [pid 11347] set_robust_list(0x7f504ff7f9a0, 24 [pid 11346] <... write resumed>) = 4 [pid 11344] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11347] <... set_robust_list resumed>) = 0 [pid 11346] close(3 [pid 11344] <... mprotect resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./519/cgroup" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1067, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11346] <... close resumed>) = 0 [pid 11347] rt_sigprocmask(SIG_SETMASK, [], [pid 11346] symlink("/dev/binderfs", "./binderfs" [pid 5049] unlink("./522/cgroup" [pid 11347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11346] <... symlink resumed>) = 0 [pid 11344] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11347] open(".", O_RDONLY [pid 11346] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11347] <... open resumed>) = 3 [pid 11346] <... futex resumed>) = 0 [pid 11347] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11346] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11347] <... futex resumed>) = 1 [pid 11346] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11344] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11347] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11343] <... futex resumed>) = 0 [pid 5047] umount2("./519/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11348 attached [pid 11347] <... futex resumed>) = 0 [pid 11346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11343] <... futex resumed>) = 1 [pid 5050] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11348] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11347] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11346] <... mmap resumed>) = 0x7f504ff5f000 [pid 11344] <... clone3 resumed> => {parent_tid=[1017]}, 88) = 1017 [pid 11343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./519/blkio.bfq.io_wait_time_recursive", [pid 11348] <... rseq resumed>) = 0 [pid 11347] <... fcntl resumed>) = 0 [pid 11346] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11344] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 11348] set_robust_list(0x7f504ff7f9a0, 24 [pid 11347] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11346] <... mprotect resumed>) = 0 [pid 11344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11348] <... set_robust_list resumed>) = 0 [pid 11347] <... futex resumed>) = 1 [pid 11346] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11343] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 11344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11348] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] unlink("./519/blkio.bfq.io_wait_time_recursive" [pid 11347] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11346] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 11347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11344] <... futex resumed>) = 0 [pid 11343] <... futex resumed>) = 0 [pid 11348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11349 attached [pid 11348] open(".", O_RDONLY [pid 11347] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11344] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11349] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11348] <... open resumed>) = 3 [pid 11347] <... openat resumed>) = 4 [pid 11346] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 11343] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./519/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11349] <... rseq resumed>) = 0 [pid 11348] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11347] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11346] rt_sigprocmask(SIG_SETMASK, [], [pid 11343] restart_syscall(<... resuming interrupted futex ...> [pid 11349] set_robust_list(0x7f504ff7f9a0, 24 [pid 11348] <... futex resumed>) = 1 [pid 11346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11344] <... futex resumed>) = 0 [pid 11343] <... restart_syscall resumed>) = ? [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(AT_FDCWD, "./522/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11349] <... set_robust_list resumed>) = 0 [pid 11348] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11347] +++ killed by SIGIO +++ [pid 11346] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./519/cgroup.net", [pid 11346] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11346] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./522/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 5049] <... unlink resumed>) = 0 [pid 11349] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11349] open(".", O_RDONLY [pid 5050] unlink("./532/cgroup.cpu") = 0 [pid 5049] getdents64(3, [pid 11349] <... open resumed>) = 3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 11349] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11344] <... futex resumed>) = 0 [pid 5050] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11349] <... futex resumed>) = 1 [pid 11346] <... futex resumed>) = 0 [pid 11349] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11346] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] rmdir("./522" [pid 11349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11348] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11346] <... futex resumed>) = 0 [pid 11344] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11343] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./532/binderfs", [pid 5049] <... rmdir resumed>) = 0 [pid 5047] unlink("./519/cgroup.net" [pid 11349] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11348] <... fcntl resumed>) = 0 [pid 11346] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11349] <... fcntl resumed>) = 0 [pid 11348] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11348] <... futex resumed>) = 1 [pid 11344] <... futex resumed>) = 0 [pid 5047] getdents64(3, [pid 11349] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11348] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./532/binderfs" [pid 11349] <... futex resumed>) = 1 [pid 11348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11346] <... futex resumed>) = 0 [pid 11344] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./523", 0777 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11349] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11346] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11349] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11346] <... futex resumed>) = 0 [pid 5050] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1036, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11349] <... openat resumed>) = 4 [pid 11348] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11344] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 5046] umount2("./517", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./519" [pid 5050] newfstatat(AT_FDCWD, "./532/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11346] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11348] <... openat resumed>) = 4 [pid 5046] openat(AT_FDCWD, "./517", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] unlink("./532/cgroup" [pid 5046] <... openat resumed>) = 3 [pid 5047] <... rmdir resumed>) = 0 [pid 11348] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] mkdir("./520", 0777 [pid 5046] newfstatat(3, "", [pid 11344] <... futex resumed>) = ? [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11348] +++ killed by SIGIO +++ [pid 5050] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./517/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./517/cgroup.cpu", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 5046] unlink("./517/cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11349] +++ killed by SIGIO +++ [pid 11346] +++ killed by SIGIO +++ [pid 5050] unlink("./532/cgroup.net" [pid 5046] umount2("./517/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./517/binderfs", [pid 5050] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./517/binderfs"./strace-static-x86_64: Process 11351 attached [pid 5050] close(3 [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1070, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] rmdir("./532" [pid 5046] umount2("./517/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11350 attached [pid 11351] set_robust_list(0x555556ac56a0, 24 [pid 5051] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1048 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1042 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11351] <... set_robust_list resumed>) = 0 [pid 11350] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11350] <... set_robust_list resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./517/cgroup", [pid 11351] chdir("./523" [pid 11350] chdir("./520" [pid 11351] <... chdir resumed>) = 0 [pid 11351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11351] setpgid(0, 0 [pid 11350] <... chdir resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5050] mkdir("./533", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11351] <... setpgid resumed>) = 0 [pid 11350] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11344] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] unlink("./517/cgroup" [pid 11350] <... prctl resumed>) = 0 [pid 5051] getdents64(3, [pid 11351] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11350] setpgid(0, 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1016, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./517/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11351] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./534/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./517/blkio.bfq.io_wait_time_recursive", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./534/cgroup.cpu" [pid 5046] unlink("./517/blkio.bfq.io_wait_time_recursive" [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./534/binderfs", [pid 5046] umount2("./517/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./517/cgroup.net", ./strace-static-x86_64: Process 11352 attached [pid 5051] unlink("./534/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11352] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./517/cgroup.net" [pid 11351] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11350] <... setpgid resumed>) = 0 [pid 5045] umount2("./507", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11352] <... set_robust_list resumed>) = 0 [pid 11351] <... symlink resumed>) = 0 [pid 5051] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11352] chdir("./533") = 0 [pid 11350] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1069 [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11351] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11350] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./534/cgroup", [pid 11352] <... prctl resumed>) = 0 [pid 11350] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] openat(AT_FDCWD, "./507", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11352] setpgid(0, 0 [pid 11351] <... symlink resumed>) = 0 [pid 5051] unlink("./534/cgroup" [pid 5046] close(3 [pid 11352] <... setpgid resumed>) = 0 [pid 11351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11350] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11352] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] newfstatat(3, "", [pid 11350] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./517" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11352] <... symlink resumed>) = 0 [pid 11350] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11352] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11352] <... symlink resumed>) = 0 [pid 11351] <... openat resumed>) = 3 [pid 11350] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11352] symlink("/syzcgroup/net/syz4", "./cgroup.net") = 0 [pid 11351] write(3, "1000", 4 [pid 5051] unlink("./534/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./507/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11351] <... write resumed>) = 4 [pid 11350] write(3, "1000", 4 [pid 5046] mkdir("./518", 0777 [pid 11352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11351] close(3 [pid 11350] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11352] <... openat resumed>) = 3 [pid 11351] <... close resumed>) = 0 [pid 11350] close(3 [pid 11352] write(3, "1000", 4 [pid 11350] <... close resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] newfstatat(AT_FDCWD, "./507/cgroup.cpu", [pid 11352] <... write resumed>) = 4 [pid 11351] symlink("/dev/binderfs", "./binderfs" [pid 11350] symlink("/dev/binderfs", "./binderfs" [pid 5051] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11352] close(3 [pid 11350] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11353 attached [pid 11352] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./534/cgroup.net", [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1038 [pid 11353] set_robust_list(0x555556ac56a0, 24 [pid 11352] symlink("/dev/binderfs", "./binderfs" [pid 11351] <... symlink resumed>) = 0 [pid 11350] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./507/cgroup.cpu" [pid 11353] <... set_robust_list resumed>) = 0 [pid 11352] <... symlink resumed>) = 0 [pid 11351] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11350] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11353] chdir("./518" [pid 11352] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11351] <... futex resumed>) = 0 [pid 11350] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] unlink("./534/cgroup.net" [pid 5045] umount2("./507/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11353] <... chdir resumed>) = 0 [pid 11352] <... futex resumed>) = 0 [pid 11351] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11350] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11352] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11351] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11352] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11353] <... prctl resumed>) = 0 [pid 11352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11351] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./507/binderfs", [pid 11353] setpgid(0, 0 [pid 11352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11353] <... setpgid resumed>) = 0 [pid 11352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11350] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] close(3 [pid 11352] <... mmap resumed>) = 0x7f504ff5f000 [pid 11351] <... mmap resumed>) = 0x7f504ff5f000 [pid 11350] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] unlink("./507/binderfs" [pid 11351] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11350] <... mprotect resumed>) = 0 [pid 11352] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11351] <... mprotect resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11353] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11352] <... mprotect resumed>) = 0 [pid 11350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11353] <... symlink resumed>) = 0 [pid 11351] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11353] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11352] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] rmdir("./534" [pid 11353] <... symlink resumed>) = 0 [pid 11351] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./507/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11354 attached [pid 11351] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11350] <... clone3 resumed> => {parent_tid=[1043]}, 88) = 1043 [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11355 attached [pid 11354] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11353] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11352] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11350] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] newfstatat(AT_FDCWD, "./507/cgroup", [pid 11355] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11354] <... rseq resumed>) = 0 [pid 11351] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 [pid 11355] <... rseq resumed>) = 0 [pid 11354] set_robust_list(0x7f504ff7f9a0, 24 [pid 11353] <... symlink resumed>) = 0 [pid 11352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11351] rt_sigprocmask(SIG_SETMASK, [], [pid 11350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] mkdir("./535", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11355] set_robust_list(0x7f504ff7f9a0, 24 [pid 11351] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11356 attached [pid 11355] <... set_robust_list resumed>) = 0 [pid 11354] <... set_robust_list resumed>) = 0 [pid 11353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11352] <... clone3 resumed> => {parent_tid=[1070]}, 88) = 1070 [pid 11350] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./507/cgroup" [pid 11356] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11355] rt_sigprocmask(SIG_SETMASK, [], [pid 11354] rt_sigprocmask(SIG_SETMASK, [], [pid 11353] <... openat resumed>) = 3 [pid 11352] rt_sigprocmask(SIG_SETMASK, [], [pid 11351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11350] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11356] <... rseq resumed>) = 0 [pid 11355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11354] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11351] <... futex resumed>) = 0 [pid 11350] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11356] set_robust_list(0x7f504ff7f9a0, 24 [pid 11354] open(".", O_RDONLY [pid 11353] write(3, "1000", 4 [pid 11352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11356] <... set_robust_list resumed>) = 0 [pid 11355] open(".", O_RDONLY [pid 11354] <... open resumed>) = 3 [pid 11353] <... write resumed>) = 4 [pid 11352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11351] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11356] rt_sigprocmask(SIG_SETMASK, [], [pid 11353] close(3 [pid 11352] <... futex resumed>) = 0 [pid 11356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11353] <... close resumed>) = 0 [pid 11352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11356] open(".", O_RDONLY [pid 11353] symlink("/dev/binderfs", "./binderfs" [pid 11356] <... open resumed>) = 3 [pid 11353] <... symlink resumed>) = 0 [pid 11356] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11353] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11356] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11353] <... futex resumed>) = 0 [pid 11352] <... futex resumed>) = 0 [pid 11355] <... open resumed>) = 3 [pid 11354] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11353] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11357 attached [pid 11356] <... futex resumed>) = 0 [pid 11353] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11352] <... futex resumed>) = 1 [pid 11357] set_robust_list(0x555556ac56a0, 24 [pid 11356] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11353] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11357] <... set_robust_list resumed>) = 0 [pid 11356] <... fcntl resumed>) = 0 [pid 11355] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11354] <... futex resumed>) = 1 [pid 11353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11350] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1072 [pid 5045] umount2("./507/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11357] chdir("./535" [pid 11356] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11355] <... futex resumed>) = 1 [pid 11354] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11351] <... futex resumed>) = 0 [pid 11350] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11357] <... chdir resumed>) = 0 [pid 11356] <... futex resumed>) = 1 [pid 11355] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11353] <... mmap resumed>) = 0x7f504ff5f000 [pid 11352] <... futex resumed>) = 0 [pid 11351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11350] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./507/blkio.bfq.io_wait_time_recursive", [pid 11357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11356] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11354] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11353] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11351] <... futex resumed>) = 0 [pid 11350] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11357] <... prctl resumed>) = 0 [pid 11356] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11355] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11354] <... fcntl resumed>) = 0 [pid 11353] <... mprotect resumed>) = 0 [pid 11352] <... futex resumed>) = 0 [pid 11351] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./507/blkio.bfq.io_wait_time_recursive" [pid 11357] setpgid(0, 0 [pid 11356] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11355] <... fcntl resumed>) = 0 [pid 11354] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11353] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11357] <... setpgid resumed>) = 0 [pid 11356] <... openat resumed>) = 4 [pid 11355] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11354] <... futex resumed>) = 1 [pid 11350] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11355] <... futex resumed>) = 1 [pid 11354] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11351] <... futex resumed>) = 0 [pid 11350] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./507/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11355] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11350] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11354] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11351] <... futex resumed>) = 0 [pid 11350] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./507/cgroup.net", [pid 11355] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11351] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11357] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11356] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11353] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11352] <... futex resumed>) = 0 [pid 11357] <... symlink resumed>) = 0 [pid 11355] <... openat resumed>) = 4 [pid 11354] <... openat resumed>) = 4 [pid 11353] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] unlink("./507/cgroup.net"./strace-static-x86_64: Process 11358 attached [pid 11357] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11355] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11354] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11351] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5045] <... unlink resumed>) = 0 [pid 11358] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11357] <... symlink resumed>) = 0 [pid 11353] <... clone3 resumed> => {parent_tid=[1039]}, 88) = 1039 [pid 11350] <... futex resumed>) = ? [pid 11358] <... rseq resumed>) = 0 [pid 11357] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11356] +++ killed by SIGIO +++ [pid 11354] +++ killed by SIGIO +++ [pid 11353] rt_sigprocmask(SIG_SETMASK, [], [pid 11352] +++ killed by SIGIO +++ [pid 5045] getdents64(3, [pid 11358] set_robust_list(0x7f504ff7f9a0, 24 [pid 11357] <... symlink resumed>) = 0 [pid 11353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1069, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11358] <... set_robust_list resumed>) = 0 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11358] rt_sigprocmask(SIG_SETMASK, [], [pid 11353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11358] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11353] <... futex resumed>) = 0 [pid 5045] close(3 [pid 11358] open(".", O_RDONLY [pid 11357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11358] <... open resumed>) = 3 [pid 11357] <... openat resumed>) = 3 [pid 5050] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11358] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11357] write(3, "1000", 4 [pid 11353] <... futex resumed>) = 0 [pid 11358] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11357] <... write resumed>) = 4 [pid 11353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./507" [pid 5050] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11357] close(3 [pid 11353] <... futex resumed>) = 0 [pid 11358] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11357] <... close resumed>) = 0 [pid 11358] <... fcntl resumed>) = 0 [pid 11353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... rmdir resumed>) = 0 [pid 11358] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11357] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... openat resumed>) = 3 [pid 11358] <... futex resumed>) = 0 [pid 11357] <... symlink resumed>) = 0 [pid 11355] +++ killed by SIGIO +++ [pid 11353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11351] +++ killed by SIGIO +++ [pid 11350] +++ killed by SIGIO +++ [pid 5050] newfstatat(3, "", [pid 5045] mkdir("./508", 0777 [pid 11358] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1048, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11357] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11353] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11358] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11358] <... openat resumed>) = 4 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1042, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 11359 attached [pid 11357] <... futex resumed>) = 0 [pid 11353] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11358] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] getdents64(3, [pid 5047] <... restart_syscall resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1018 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11359] set_robust_list(0x555556ac56a0, 24 [pid 5050] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./520", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11357] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 5049] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11357] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11358] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] openat(AT_FDCWD, "./520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... openat resumed>) = 3 [pid 5047] <... openat resumed>) = 3 [pid 5049] newfstatat(3, "", [pid 5047] newfstatat(3, "", [pid 11357] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5047] getdents64(3, [pid 11359] <... set_robust_list resumed>) = 0 [pid 11357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./533/cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11359] chdir("./508" [pid 11357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11353] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./520/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./520/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./523/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1038, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] unlink("./523/cgroup.cpu" [pid 5047] unlink("./520/cgroup.cpu" [pid 11357] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./520/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11357] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./520/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./520/binderfs") = 0 [pid 5049] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11359] <... chdir resumed>) = 0 [pid 5050] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11357] <... mprotect resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./518", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11359] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] newfstatat(AT_FDCWD, "./533/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./520/cgroup", [pid 11359] <... prctl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./523/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11359] setpgid(0, 0 [pid 11357] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./533/binderfs" [pid 11359] <... setpgid resumed>) = 0 [pid 11357] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] openat(AT_FDCWD, "./518", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./520/cgroup" [pid 11359] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11357] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] unlink("./523/binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5047] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./520/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./520/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./520/cgroup.net"./strace-static-x86_64: Process 11360 attached [pid 11359] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11359] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11360] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11357] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 5050] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11360] <... rseq resumed>) = 0 [pid 11359] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11360] set_robust_list(0x7f504ff7f9a0, 24 [pid 11359] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11357] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./533/cgroup", [pid 5046] getdents64(3, [pid 11360] <... set_robust_list resumed>) = 0 [pid 11359] <... symlink resumed>) = 0 [pid 11357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 11360] rt_sigprocmask(SIG_SETMASK, [], [pid 11359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11357] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./533/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./523/cgroup", [pid 5047] <... close resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11360] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11359] <... openat resumed>) = 3 [pid 11357] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./520" [pid 11360] open(".", O_RDONLY [pid 11359] write(3, "1000", 4 [pid 11357] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./523/cgroup" [pid 5047] <... rmdir resumed>) = 0 [pid 5046] umount2("./518/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11360] <... open resumed>) = 3 [pid 11359] <... write resumed>) = 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11359] close(3 [pid 5046] newfstatat(AT_FDCWD, "./518/cgroup.cpu", [pid 11359] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", [pid 11360] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] mkdir("./521", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11359] symlink("/dev/binderfs", "./binderfs" [pid 5050] unlink("./533/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./518/cgroup.cpu" [pid 11359] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", [pid 11360] <... futex resumed>) = 1 [pid 11359] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 11360] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11359] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 11359] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11357] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./533/cgroup.net", [pid 11359] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11357] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./518/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11361 attached [pid 11360] <... futex resumed>) = 0 [pid 11359] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11357] <... futex resumed>) = 1 [pid 5050] unlink("./533/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11361] set_robust_list(0x555556ac56a0, 24 [pid 11360] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11357] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11361] <... set_robust_list resumed>) = 0 [pid 11360] <... fcntl resumed>) = 0 [pid 11359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1044 [pid 5046] newfstatat(AT_FDCWD, "./518/binderfs", [pid 11361] chdir("./521" [pid 11360] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11360] <... futex resumed>) = 1 [pid 11359] <... mmap resumed>) = 0x7f504ff5f000 [pid 11357] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11361] <... chdir resumed>) = 0 [pid 11360] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11359] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11357] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11361] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11357] <... futex resumed>) = 0 [pid 5050] close(3 [pid 5049] unlink("./523/cgroup.net" [pid 5046] unlink("./518/binderfs" [pid 11361] <... prctl resumed>) = 0 [pid 11360] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11357] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... close resumed>) = 0 [pid 11361] setpgid(0, 0 [pid 11360] <... openat resumed>) = 4 [pid 11359] <... mprotect resumed>) = 0 [pid 5050] rmdir("./533" [pid 5046] <... unlink resumed>) = 0 [pid 11361] <... setpgid resumed>) = 0 [pid 11359] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11357] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./518/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11361] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11360] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11359] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11357] ???( [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11361] <... symlink resumed>) = 0 [pid 5050] mkdir("./534", 0777 [pid 5046] newfstatat(AT_FDCWD, "./518/cgroup", [pid 11361] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11361] <... symlink resumed>) = 0 [pid 11360] +++ killed by SIGIO +++ [pid 11359] <... clone3 resumed> => {parent_tid=[1019]}, 88) = 1019 [pid 11357] <... ??? resumed>) = ? [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11359] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11362 attached [pid 11361] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5050] <... mkdir resumed>) = 0 [pid 11362] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11361] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5049] close(3 [pid 5046] unlink("./518/cgroup" [pid 11359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11362] <... rseq resumed>) = 0 [pid 11359] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... close resumed>) = 0 [pid 11362] set_robust_list(0x7f504ff7f9a0, 24 [pid 11361] write(3, "1000", 4 [pid 11362] <... set_robust_list resumed>) = 0 [pid 11361] <... write resumed>) = 4 [pid 11359] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11362] rt_sigprocmask(SIG_SETMASK, [], [pid 11359] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./523" [pid 5046] umount2("./518/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11362] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11361] close(3 [pid 11362] open(".", O_RDONLY [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11362] <... open resumed>) = 3 [pid 11361] <... close resumed>) = 0 [pid 11362] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11359] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11363 attached [pid 11362] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11361] symlink("/dev/binderfs", "./binderfs" [pid 11359] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./518/blkio.bfq.io_wait_time_recursive", [pid 11363] set_robust_list(0x555556ac56a0, 24 [pid 11362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11361] <... symlink resumed>) = 0 [pid 11359] <... futex resumed>) = 0 [pid 11357] +++ killed by SIGIO +++ [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1071 [pid 5049] mkdir("./524", 0777 [pid 11363] <... set_robust_list resumed>) = 0 [pid 11362] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11361] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11359] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11363] chdir("./534" [pid 11362] <... fcntl resumed>) = 0 [pid 11361] <... futex resumed>) = 0 [pid 11362] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11361] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11363] <... chdir resumed>) = 0 [pid 11362] <... futex resumed>) = 1 [pid 11361] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11359] <... futex resumed>) = 0 [pid 5046] unlink("./518/blkio.bfq.io_wait_time_recursive" [pid 11363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11362] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11361] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11359] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1072, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... mkdir resumed>) = 0 [pid 11363] <... prctl resumed>) = 0 [pid 11362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11361] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11359] <... futex resumed>) = 0 [pid 5051] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11363] setpgid(0, 0 [pid 11362] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11359] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./518/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11363] <... setpgid resumed>) = 0 [pid 11362] <... openat resumed>) = 4 [pid 11361] <... mmap resumed>) = 0x7f504ff5f000 [pid 11359] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11363] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11362] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11361] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11363] <... symlink resumed>) = 0 [pid 11361] <... mprotect resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11361] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./518/cgroup.net", [pid 5051] newfstatat(3, "", ./strace-static-x86_64: Process 11364 attached [pid 11363] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11362] +++ killed by SIGIO +++ [pid 11361] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11364] set_robust_list(0x555556ac56a0, 24 [pid 11363] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 11364] <... set_robust_list resumed>) = 0 [pid 11363] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11361] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11359] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1050 [pid 5046] unlink("./518/cgroup.net"./strace-static-x86_64: Process 11365 attached [pid 11364] chdir("./524" [pid 11363] <... symlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1018, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11365] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11361] <... clone3 resumed> => {parent_tid=[1045]}, 88) = 1045 [pid 11364] <... chdir resumed>) = 0 [pid 11363] <... openat resumed>) = 3 [pid 11364] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11361] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11365] <... rseq resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11365] set_robust_list(0x7f504ff7f9a0, 24 [pid 11364] <... prctl resumed>) = 0 [pid 11363] write(3, "1000", 4 [pid 11361] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11365] <... set_robust_list resumed>) = 0 [pid 11364] setpgid(0, 0 [pid 11363] <... write resumed>) = 4 [pid 11361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./535/cgroup.cpu", [pid 11365] rt_sigprocmask(SIG_SETMASK, [], [pid 11363] close(3 [pid 11361] <... futex resumed>) = 0 [pid 11363] <... close resumed>) = 0 [pid 11361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11365] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11364] <... setpgid resumed>) = 0 [pid 11363] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./508", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11365] open(".", O_RDONLY [pid 11363] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11364] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11363] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11363] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11363] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11365] <... open resumed>) = 3 [pid 11364] <... symlink resumed>) = 0 [pid 5051] unlink("./535/cgroup.cpu" [pid 5046] close(3 [pid 5045] openat(AT_FDCWD, "./508", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11364] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11365] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11364] <... symlink resumed>) = 0 [pid 11363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11365] <... futex resumed>) = 1 [pid 11363] <... mmap resumed>) = 0x7f504ff5f000 [pid 11361] <... futex resumed>) = 0 [pid 11365] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11364] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11363] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] rmdir("./518" [pid 5045] newfstatat(3, "", [pid 11365] <... fcntl resumed>) = 0 [pid 11364] <... symlink resumed>) = 0 [pid 11363] <... mprotect resumed>) = 0 [pid 11361] <... futex resumed>) = 0 [pid 5051] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... rmdir resumed>) = 0 [pid 11365] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11363] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./519", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11365] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11363] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./535/binderfs", [pid 5045] getdents64(3, [pid 11364] <... openat resumed>) = 3 [pid 11363] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11366 attached [pid 11365] <... futex resumed>) = 0 [pid 11364] write(3, "1000", 4 [pid 11361] <... futex resumed>) = 1 [pid 5051] unlink("./535/binderfs" [pid 11366] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11365] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11364] <... write resumed>) = 4 [pid 11363] <... clone3 resumed> => {parent_tid=[1072]}, 88) = 1072 [pid 11361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... mkdir resumed>) = 0 [pid 5045] umount2("./508/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11366] <... rseq resumed>) = 0 [pid 11365] <... openat resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 11366] set_robust_list(0x7f504ff7f9a0, 24 [pid 11364] close(3 [pid 11366] <... set_robust_list resumed>) = 0 [pid 11364] <... close resumed>) = 0 [pid 11366] rt_sigprocmask(SIG_SETMASK, [], [pid 11364] symlink("/dev/binderfs", "./binderfs" [pid 11366] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11365] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11363] rt_sigprocmask(SIG_SETMASK, [], [pid 11361] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11366] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11364] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./508/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11365] +++ killed by SIGIO +++ [pid 11364] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11363] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./535/cgroup", [pid 5045] unlink("./508/cgroup.cpu" [pid 11364] <... futex resumed>) = 0 [pid 11364] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 ./strace-static-x86_64: Process 11367 attached [pid 11366] <... futex resumed>) = 0 [pid 11363] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11366] open(".", O_RDONLY [pid 11364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11363] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11367] set_robust_list(0x555556ac56a0, 24 [pid 11364] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./535/cgroup" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1040 [pid 5045] umount2("./508/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11367] <... set_robust_list resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11367] chdir("./519" [pid 11366] <... open resumed>) = 3 [pid 11364] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./508/binderfs", [pid 11366] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11364] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11367] <... chdir resumed>) = 0 [pid 11366] <... futex resumed>) = 1 [pid 11364] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11363] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./508/binderfs" [pid 11367] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11366] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11363] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11361] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11368 attached [pid 11367] <... prctl resumed>) = 0 [pid 11366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11363] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1044, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... unlink resumed>) = 0 [pid 11368] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11367] setpgid(0, 0 [pid 5051] unlink("./535/blkio.bfq.io_wait_time_recursive" [pid 11368] <... rseq resumed>) = 0 [pid 11367] <... setpgid resumed>) = 0 [pid 11366] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11363] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./508/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11368] set_robust_list(0x7f504ff7f9a0, 24 [pid 11366] <... fcntl resumed>) = 0 [pid 11364] <... clone3 resumed> => {parent_tid=[1051]}, 88) = 1051 [pid 11368] <... set_robust_list resumed>) = 0 [pid 11367] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11366] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11364] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11368] rt_sigprocmask(SIG_SETMASK, [], [pid 11367] <... symlink resumed>) = 0 [pid 11366] <... futex resumed>) = 1 [pid 11364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11363] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./508/cgroup", [pid 11368] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11367] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11366] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11364] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11363] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11367] <... symlink resumed>) = 0 [pid 11366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11364] <... futex resumed>) = 0 [pid 11363] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11368] open(".", O_RDONLY [pid 11366] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11364] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11363] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11367] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./508/cgroup" [pid 11368] <... open resumed>) = 3 [pid 11367] <... symlink resumed>) = 0 [pid 5051] unlink("./535/cgroup.net" [pid 5047] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11368] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11368] <... futex resumed>) = 1 [pid 11367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11366] <... openat resumed>) = 4 [pid 11364] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] umount2("./508/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11368] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11366] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] getdents64(3, [pid 11368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11364] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11363] <... futex resumed>) = ? [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11368] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11367] <... openat resumed>) = 3 [pid 11366] +++ killed by SIGIO +++ [pid 11364] <... futex resumed>) = 0 [pid 5051] close(3 [pid 5047] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./508/blkio.bfq.io_wait_time_recursive", [pid 11368] <... fcntl resumed>) = 0 [pid 11367] write(3, "1000", 4 [pid 11364] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11368] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11367] <... write resumed>) = 4 [pid 11364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 11368] <... futex resumed>) = 0 [pid 11367] close(3 [pid 11364] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./535" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./508/blkio.bfq.io_wait_time_recursive" [pid 11368] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11367] <... close resumed>) = 0 [pid 11364] <... futex resumed>) = 0 [pid 5047] unlink("./521/cgroup.cpu" [pid 11368] <... openat resumed>) = 4 [pid 11367] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11363] +++ killed by SIGIO +++ [pid 5051] mkdir("./536", 0777 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1071, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] umount2("./508/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11368] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11364] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11368] <... futex resumed>) = ? [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11367] <... symlink resumed>) = 0 [pid 5047] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./508/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11367] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./521/binderfs", [pid 11367] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11367] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5047] unlink("./521/binderfs" [pid 11367] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... unlink resumed>) = 0 [pid 11367] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5047] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./521/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./521/cgroup" [pid 11367] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11369 attached [pid 11368] +++ killed by SIGIO +++ [pid 11367] <... mprotect resumed>) = 0 [pid 11364] +++ killed by SIGIO +++ [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1074 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./508/cgroup.net" [pid 11369] set_robust_list(0x555556ac56a0, 24 [pid 5050] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11369] <... set_robust_list resumed>) = 0 [pid 11367] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1050, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11369] chdir("./536" [pid 11367] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(3, "", [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11369] <... chdir resumed>) = 0 [pid 11367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3./strace-static-x86_64: Process 11370 attached [pid 11369] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] getdents64(3, [pid 5047] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 11370] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11369] <... prctl resumed>) = 0 [pid 11367] <... clone3 resumed> => {parent_tid=[1041]}, 88) = 1041 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11370] <... rseq resumed>) = 0 [pid 11369] setpgid(0, 0 [pid 11367] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./508" [pid 11370] set_robust_list(0x7f504ff7f9a0, 24 [pid 11369] <... setpgid resumed>) = 0 [pid 11367] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./521/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./521/cgroup.net" [pid 5045] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11369] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./521" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11370] <... set_robust_list resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11370] rt_sigprocmask(SIG_SETMASK, [], [pid 11367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11370] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11367] <... futex resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 11369] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./534/cgroup.cpu", [pid 5045] mkdir("./509", 0777 [pid 5047] mkdir("./522", 0777 [pid 11370] open(".", O_RDONLY [pid 5047] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./534/cgroup.cpu") = 0 [pid 5049] newfstatat(3, "", [pid 11367] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11370] <... open resumed>) = 3 [pid 11369] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11371 attached [pid 11370] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11369] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 11369] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11371] set_robust_list(0x555556ac56a0, 24 [pid 11370] <... futex resumed>) = 1 [pid 5050] newfstatat(AT_FDCWD, "./534/binderfs", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1046 [pid 11371] <... set_robust_list resumed>) = 0 [pid 11370] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11371] chdir("./522" [pid 11369] <... symlink resumed>) = 0 [pid 5050] unlink("./534/binderfs" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11367] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11372 attached [pid 11369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11371] <... chdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11372] set_robust_list(0x555556ac56a0, 24 [pid 11371] setpgid(0, 0 [pid 11369] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11371] <... setpgid resumed>) = 0 [pid 11371] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11369] write(3, "1000", 4 [pid 5050] newfstatat(AT_FDCWD, "./534/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./534/cgroup" [pid 11372] <... set_robust_list resumed>) = 0 [pid 11370] <... futex resumed>) = 0 [pid 11369] <... write resumed>) = 4 [pid 11367] <... futex resumed>) = 1 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1020 [pid 11371] <... symlink resumed>) = 0 [pid 11370] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 5049] newfstatat(AT_FDCWD, "./524/cgroup.cpu", [pid 11369] close(3 [pid 11367] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11371] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11370] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11369] <... close resumed>) = 0 [pid 11367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11372] chdir("./509" [pid 11371] <... symlink resumed>) = 0 [pid 11370] <... futex resumed>) = 0 [pid 11372] <... chdir resumed>) = 0 [pid 11369] symlink("/dev/binderfs", "./binderfs" [pid 11367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./524/cgroup.cpu" [pid 11372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11372] setpgid(0, 0 [pid 11371] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11370] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11372] <... setpgid resumed>) = 0 [pid 11371] <... symlink resumed>) = 0 [pid 11370] <... openat resumed>) = 4 [pid 11369] <... symlink resumed>) = 0 [pid 11367] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 11371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11370] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11372] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11371] <... openat resumed>) = 3 [pid 11369] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./534/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11372] <... symlink resumed>) = 0 [pid 11369] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11372] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11371] write(3, "1000", 4 [pid 11369] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(AT_FDCWD, "./524/binderfs", [pid 11372] <... symlink resumed>) = 0 [pid 11371] <... write resumed>) = 4 [pid 11369] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11371] close(3 [pid 11370] +++ killed by SIGIO +++ [pid 11369] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11367] +++ killed by SIGIO +++ [pid 5050] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./524/binderfs" [pid 11372] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11371] <... close resumed>) = 0 [pid 11369] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1040, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] newfstatat(AT_FDCWD, "./534/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./534/cgroup.net") = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] close(3 [pid 11372] <... openat resumed>) = 3 [pid 5050] <... close resumed>) = 0 [pid 5050] rmdir("./534" [pid 11372] write(3, "1000", 4 [pid 11371] symlink("/dev/binderfs", "./binderfs" [pid 11369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... rmdir resumed>) = 0 [pid 11372] <... write resumed>) = 4 [pid 5050] mkdir("./535", 0777 [pid 11371] <... symlink resumed>) = 0 [pid 11369] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11372] close(3 [pid 5049] newfstatat(AT_FDCWD, "./524/cgroup", [pid 11371] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11369] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11372] <... close resumed>) = 0 [pid 11372] symlink("/dev/binderfs", "./binderfs" [pid 11371] <... futex resumed>) = 0 [pid 11369] <... mprotect resumed>) = 0 [pid 5049] unlink("./524/cgroup" [pid 5046] umount2("./519", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11373 attached [pid 11372] <... symlink resumed>) = 0 [pid 11371] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11373] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1073 [pid 11373] <... set_robust_list resumed>) = 0 [pid 11373] chdir("./535" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11373] <... chdir resumed>) = 0 [pid 11373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11373] setpgid(0, 0) = 0 [pid 11371] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] openat(AT_FDCWD, "./519", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11373] symlink("/syzcgroup/unified/syz4", "./cgroup") = 0 [pid 11369] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... openat resumed>) = 3 [pid 11371] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11372] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11372] <... futex resumed>) = 0 [pid 11369] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11372] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11369] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(3, "", [pid 11373] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11372] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11371] <... mmap resumed>) = 0x7f504ff5f000 [pid 11373] <... symlink resumed>) = 0 [pid 11372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11371] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11369] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11374 attached [pid 11373] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11372] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11374] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11373] <... symlink resumed>) = 0 [pid 11372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11371] <... mprotect resumed>) = 0 [pid 11369] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 5046] getdents64(3, [pid 11374] <... rseq resumed>) = 0 [pid 11372] <... mmap resumed>) = 0x7f504ff5f000 [pid 11374] set_robust_list(0x7f504ff7f9a0, 24 [pid 11373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11374] <... set_robust_list resumed>) = 0 [pid 11373] <... openat resumed>) = 3 [pid 11372] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11374] rt_sigprocmask(SIG_SETMASK, [], [pid 11369] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11374] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11374] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11373] write(3, "1000", 4) = 4 [pid 11373] close(3) = 0 [pid 11373] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11373] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11371] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11373] <... futex resumed>) = 0 [pid 11372] <... mprotect resumed>) = 0 [pid 11371] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11369] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./519/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11373] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11373] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11372] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11369] <... futex resumed>) = 1 [pid 5049] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11374] <... futex resumed>) = 0 [pid 11373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11372] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11369] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./519/cgroup.cpu", [pid 11372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11374] open(".", O_RDONLY [pid 11373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11376 attached ./strace-static-x86_64: Process 11375 attached [pid 11374] <... open resumed>) = 3 [pid 11373] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./519/cgroup.cpu" [pid 11376] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11375] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11374] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11373] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11372] <... clone3 resumed> => {parent_tid=[1021]}, 88) = 1021 [pid 11371] <... clone3 resumed> => {parent_tid=[1047]}, 88) = 1047 [pid 5049] unlink("./524/cgroup.net" [pid 11376] <... rseq resumed>) = 0 [pid 11375] <... rseq resumed>) = 0 [pid 11374] <... futex resumed>) = 1 [pid 11373] <... mprotect resumed>) = 0 [pid 11372] rt_sigprocmask(SIG_SETMASK, [], [pid 11371] rt_sigprocmask(SIG_SETMASK, [], [pid 11369] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11376] set_robust_list(0x7f504ff7f9a0, 24 [pid 11375] set_robust_list(0x7f504ff7f9a0, 24 [pid 11374] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11373] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11372] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11369] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11376] <... set_robust_list resumed>) = 0 [pid 11375] <... set_robust_list resumed>) = 0 [pid 11374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11373] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11372] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11369] <... futex resumed>) = 0 [pid 5046] umount2("./519/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11376] rt_sigprocmask(SIG_SETMASK, [], [pid 11375] rt_sigprocmask(SIG_SETMASK, [], [pid 11374] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11372] <... futex resumed>) = 0 [pid 11371] <... futex resumed>) = 0 [pid 11369] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11376] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11375] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11374] <... fcntl resumed>) = 0 [pid 11372] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11371] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./519/binderfs", ./strace-static-x86_64: Process 11377 attached [pid 11374] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11373] <... clone3 resumed> => {parent_tid=[1074]}, 88) = 1074 [pid 11377] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11375] open(".", O_RDONLY [pid 11374] <... futex resumed>) = 1 [pid 11373] rt_sigprocmask(SIG_SETMASK, [], [pid 11369] <... futex resumed>) = 0 [pid 11377] <... rseq resumed>) = 0 [pid 11374] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11369] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11377] set_robust_list(0x7f504ff7f9a0, 24 [pid 11374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11373] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11369] <... futex resumed>) = 0 [pid 11377] <... set_robust_list resumed>) = 0 [pid 11376] open(".", O_RDONLY [pid 11374] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11373] <... futex resumed>) = 0 [pid 11369] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11377] rt_sigprocmask(SIG_SETMASK, [], [pid 11376] <... open resumed>) = 3 [pid 11375] <... open resumed>) = 3 [pid 11374] <... openat resumed>) = 4 [pid 5049] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11376] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11377] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11376] <... futex resumed>) = 1 [pid 11373] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11371] <... futex resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] unlink("./519/binderfs" [pid 11377] open(".", O_RDONLY [pid 11374] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11377] <... open resumed>) = 3 [pid 11369] <... futex resumed>) = ? [pid 11377] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11376] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11375] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11374] +++ killed by SIGIO +++ [pid 11371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./524" [pid 5046] <... unlink resumed>) = 0 [pid 11377] <... futex resumed>) = 1 [pid 11375] <... futex resumed>) = 1 [pid 11373] <... futex resumed>) = 0 [pid 11372] <... futex resumed>) = 0 [pid 11369] +++ killed by SIGIO +++ [pid 11377] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11375] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11373] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11372] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11373] <... futex resumed>) = 0 [pid 11377] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11375] <... fcntl resumed>) = 0 [pid 11377] <... fcntl resumed>) = 0 [pid 11373] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11377] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... rmdir resumed>) = 0 [pid 11376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11377] <... futex resumed>) = 0 [pid 11373] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11371] <... futex resumed>) = 0 [pid 5046] umount2("./519/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11377] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11373] <... futex resumed>) = 0 [pid 11377] <... openat resumed>) = 4 [pid 11376] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11375] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11372] <... futex resumed>) = 0 [pid 11371] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1074, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] mkdir("./525", 0777 [pid 11376] <... fcntl resumed>) = 0 [pid 11375] <... futex resumed>) = 0 [pid 11372] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./519/cgroup", [pid 11373] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11377] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 11377] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11375] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11376] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./519/cgroup" [pid 11376] <... futex resumed>) = 0 [pid 11372] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 11376] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11372] <... futex resumed>) = 1 [pid 11371] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11375] <... futex resumed>) = 0 [pid 11376] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11371] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... openat resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 11372] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11375] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11373] +++ killed by SIGIO +++ [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1073, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11376] <... openat resumed>) = 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./535/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./535/cgroup.cpu" [pid 11375] <... openat resumed>) = 4 [pid 5051] newfstatat(3, "", [pid 5046] umount2("./519/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11378 attached [pid 11376] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11375] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11371] <... futex resumed>) = -1 (errno 18446744073709551450) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./519/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1052 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./535/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./519/blkio.bfq.io_wait_time_recursive" [pid 11376] +++ killed by SIGIO +++ [pid 5050] unlink("./535/binderfs") = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11375] +++ killed by SIGIO +++ [pid 5051] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11378] set_robust_list(0x555556ac56a0, 24 [pid 5050] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11378] <... set_robust_list resumed>) = 0 [pid 11372] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./519/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./536/cgroup.cpu", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./519/cgroup.net", [pid 5050] newfstatat(AT_FDCWD, "./535/cgroup", [pid 11378] chdir("./525" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./535/cgroup") = 0 [pid 5050] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./536/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./535/blkio.bfq.io_wait_time_recursive") = 0 [pid 5050] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./519/cgroup.net" [pid 11378] <... chdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 11378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11378] setpgid(0, 0) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./535/cgroup.net" [pid 11378] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] newfstatat(AT_FDCWD, "./536/binderfs", [pid 5046] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 11371] +++ killed by SIGIO +++ [pid 5050] getdents64(3, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 5050] rmdir("./535" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1046, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] unlink("./536/binderfs" [pid 5046] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./519" [pid 5050] mkdir("./536", 0777 [pid 11378] <... symlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5051] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... mkdir resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11378] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11372] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./536/cgroup", [pid 5047] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./520", 0777 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 11378] <... symlink resumed>) = 0 [pid 5051] unlink("./536/cgroup" [pid 5047] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 11378] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11379 attached [pid 11378] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11379] set_robust_list(0x555556ac56a0, 24 [pid 11378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1075 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1020, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 11380 attached [pid 11379] <... set_robust_list resumed>) = 0 [pid 11378] <... openat resumed>) = 3 [pid 5045] umount2("./509", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11379] chdir("./536" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11380] set_robust_list(0x555556ac56a0, 24 [pid 11379] <... chdir resumed>) = 0 [pid 11378] write(3, "1000", 4 [pid 5051] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1042 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11380] <... set_robust_list resumed>) = 0 [pid 11379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11378] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./509", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11379] <... prctl resumed>) = 0 [pid 11378] close(3 [pid 5051] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 5045] <... openat resumed>) = 3 [pid 11379] setpgid(0, 0 [pid 11378] <... close resumed>) = 0 [pid 11380] chdir("./520" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11380] <... chdir resumed>) = 0 [pid 11380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11379] <... setpgid resumed>) = 0 [pid 11378] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./536/cgroup.net", [pid 5047] unlink("./522/cgroup.cpu" [pid 5045] newfstatat(3, "", [pid 11380] <... prctl resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11380] setpgid(0, 0 [pid 5047] <... unlink resumed>) = 0 [pid 11380] <... setpgid resumed>) = 0 [pid 5051] unlink("./536/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11380] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 11380] <... symlink resumed>) = 0 [pid 11379] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11378] <... symlink resumed>) = 0 [pid 5047] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 5051] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11380] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./522/binderfs", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11378] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./509/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11380] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11378] <... futex resumed>) = 0 [pid 11380] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5047] unlink("./522/binderfs" [pid 11379] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11379] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11378] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11379] <... symlink resumed>) = 0 [pid 11378] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11380] write(3, "1000", 4 [pid 11378] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11379] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./509/cgroup.cpu", [pid 11380] <... write resumed>) = 4 [pid 11378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] rmdir("./536" [pid 5047] <... unlink resumed>) = 0 [pid 11380] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11380] <... close resumed>) = 0 [pid 11378] <... mmap resumed>) = 0x7f504ff5f000 [pid 11380] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 11379] <... symlink resumed>) = 0 [pid 11380] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11380] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5047] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11378] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] unlink("./509/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11380] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11379] <... openat resumed>) = 3 [pid 11378] <... mprotect resumed>) = 0 [pid 5051] mkdir("./537", 0777 [pid 11380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11379] write(3, "1000", 4 [pid 11380] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] newfstatat(AT_FDCWD, "./522/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 11380] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11379] <... write resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11380] <... mprotect resumed>) = 0 [pid 11379] close(3 [pid 11378] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11379] <... close resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] umount2("./509/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11378] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./522/cgroup" [pid 11378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11380] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11379] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./509/binderfs", ./strace-static-x86_64: Process 11381 attached [pid 11380] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11379] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11381] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11379] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11378] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./509/binderfs"./strace-static-x86_64: Process 11382 attached [pid 11381] <... rseq resumed>) = 0 [pid 11379] <... futex resumed>) = 0 [pid 11378] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11383 attached [pid 11382] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11381] set_robust_list(0x7f504ff7f9a0, 24 [pid 11380] <... clone3 resumed> => {parent_tid=[1043]}, 88) = 1043 [pid 11379] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11378] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11383] set_robust_list(0x555556ac56a0, 24 [pid 11382] <... rseq resumed>) = 0 [pid 11381] <... set_robust_list resumed>) = 0 [pid 11380] rt_sigprocmask(SIG_SETMASK, [], [pid 11379] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1076 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11383] <... set_robust_list resumed>) = 0 [pid 11382] set_robust_list(0x7f504ff7f9a0, 24 [pid 11381] rt_sigprocmask(SIG_SETMASK, [], [pid 11380] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11379] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11378] <... futex resumed>) = 0 [pid 5047] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./509/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11382] <... set_robust_list resumed>) = 0 [pid 11381] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11378] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11383] chdir("./537" [pid 11382] rt_sigprocmask(SIG_SETMASK, [], [pid 11380] <... futex resumed>) = 0 [pid 11379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11381] open(".", O_RDONLY [pid 11379] <... mmap resumed>) = 0x7f504ff5f000 [pid 11383] <... chdir resumed>) = 0 [pid 5047] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./509/cgroup", [pid 11380] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11379] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11381] <... open resumed>) = 3 [pid 11379] <... mprotect resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11381] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./522/cgroup.net", [pid 11381] <... futex resumed>) = 1 [pid 11378] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11381] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./522/cgroup.net" [pid 11381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11378] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11381] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11382] open(".", O_RDONLY [pid 11383] <... prctl resumed>) = 0 [pid 11381] <... fcntl resumed>) = 0 [pid 11378] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11383] setpgid(0, 0 [pid 11382] <... open resumed>) = 3 [pid 11381] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] getdents64(3, [pid 11383] <... setpgid resumed>) = 0 [pid 11382] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11381] <... futex resumed>) = 0 [pid 11379] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./509/cgroup" [pid 11381] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11380] <... futex resumed>) = 0 [pid 11378] <... futex resumed>) = 0 [pid 11383] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11382] <... futex resumed>) = 1 [pid 11380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11379] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11378] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11383] <... symlink resumed>) = 0 [pid 11382] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11380] <... futex resumed>) = 0 [pid 11379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... close resumed>) = 0 [pid 11383] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11382] <... fcntl resumed>) = 0 [pid 11381] <... openat resumed>) = ? [pid 11380] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./509/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11384 attached [pid 11383] <... symlink resumed>) = 0 [pid 5047] rmdir("./522" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11384] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11382] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11380] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11379] <... clone3 resumed> => {parent_tid=[1076]}, 88) = 1076 [pid 11384] <... rseq resumed>) = 0 [pid 11382] <... futex resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11384] set_robust_list(0x7f504ff7f9a0, 24 [pid 11382] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11384] <... set_robust_list resumed>) = 0 [pid 11384] rt_sigprocmask(SIG_SETMASK, [], [pid 11383] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./509/blkio.bfq.io_wait_time_recursive", [pid 11384] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] mkdir("./523", 0777 [pid 11380] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11383] <... symlink resumed>) = 0 [pid 11382] <... openat resumed>) = 4 [pid 11381] +++ killed by SIGIO +++ [pid 11379] rt_sigprocmask(SIG_SETMASK, [], [pid 11378] +++ killed by SIGIO +++ [pid 5047] <... mkdir resumed>) = 0 [pid 11379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11384] <... futex resumed>) = 0 [pid 11379] <... futex resumed>) = 1 [pid 11383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11382] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1052, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11384] open(".", O_RDONLY [pid 5045] unlink("./509/blkio.bfq.io_wait_time_recursive" [pid 11383] <... openat resumed>) = 3 [pid 11379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11385 attached [pid 11384] <... open resumed>) = 3 [pid 11383] write(3, "1000", 4 [pid 11385] set_robust_list(0x555556ac56a0, 24 [pid 11384] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11385] <... set_robust_list resumed>) = 0 [pid 11384] <... futex resumed>) = 1 [pid 11383] <... write resumed>) = 4 [pid 11382] +++ killed by SIGIO +++ [pid 11380] +++ killed by SIGIO +++ [pid 11379] <... futex resumed>) = 0 [pid 5049] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1048 [pid 5045] umount2("./509/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11385] chdir("./523" [pid 11384] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11383] close(3 [pid 11379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11385] <... chdir resumed>) = 0 [pid 11384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11383] <... close resumed>) = 0 [pid 11379] <... futex resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1042, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] newfstatat(AT_FDCWD, "./509/cgroup.net", [pid 11385] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11384] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11383] symlink("/dev/binderfs", "./binderfs" [pid 11379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... openat resumed>) = 3 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11385] <... prctl resumed>) = 0 [pid 11384] <... fcntl resumed>) = 0 [pid 11383] <... symlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5046] <... restart_syscall resumed>) = 0 [pid 11385] setpgid(0, 0 [pid 11384] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11383] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./509/cgroup.net" [pid 11385] <... setpgid resumed>) = 0 [pid 11384] <... futex resumed>) = 1 [pid 11379] <... futex resumed>) = 0 [pid 11384] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11383] <... futex resumed>) = 0 [pid 11379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11385] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11383] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11379] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11384] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11383] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, [pid 11383] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./520", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11383] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11384] <... openat resumed>) = 4 [pid 11383] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] close(3 [pid 11383] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 5046] openat(AT_FDCWD, "./520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... close resumed>) = 0 [pid 11385] <... symlink resumed>) = 0 [pid 11384] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11383] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11379] <... futex resumed>) = 10 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11385] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu") = 0 [pid 11383] <... mprotect resumed>) = 0 [pid 5049] unlink("./525/cgroup.cpu" [pid 5046] newfstatat(3, "", [pid 5045] rmdir("./509" [pid 11385] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 11383] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11385] <... symlink resumed>) = 0 [pid 11383] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11383] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./525/binderfs", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11386 attached [pid 11385] write(3, "1000", 4 [pid 5045] mkdir("./510", 0777 [pid 11386] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11383] <... clone3 resumed> => {parent_tid=[1077]}, 88) = 1077 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./520/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 11383] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] unlink("./525/binderfs" [pid 11386] <... rseq resumed>) = 0 [pid 11384] +++ killed by SIGIO +++ [pid 11385] <... write resumed>) = 4 [pid 11379] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11386] set_robust_list(0x7f504ff7f9a0, 24 [pid 11385] close(3 [pid 11383] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./520/cgroup.cpu", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11386] <... set_robust_list resumed>) = 0 [pid 11385] <... close resumed>) = 0 [pid 11383] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11386] rt_sigprocmask(SIG_SETMASK, [], [pid 11385] symlink("/dev/binderfs", "./binderfs" [pid 11383] <... futex resumed>) = 0 [pid 5046] unlink("./520/cgroup.cpu" [pid 11386] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11385] <... symlink resumed>) = 0 [pid 11383] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1075, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11385] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11385] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./525/cgroup", [pid 11385] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] umount2("./520/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./520/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11385] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./520/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11387 attached [pid 11386] open(".", O_RDONLY [pid 11385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./525/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1022 [pid 11386] <... open resumed>) = 3 [pid 11385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... openat resumed>) = 3 [pid 5046] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./520/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11385] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 11387] set_robust_list(0x555556ac56a0, 24 [pid 11386] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11385] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./520/cgroup" [pid 11387] <... set_robust_list resumed>) = 0 [pid 11383] <... futex resumed>) = 0 [pid 11385] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 11386] <... futex resumed>) = 1 [pid 11383] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11387] chdir("./510" [pid 11386] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11385] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11383] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11387] <... chdir resumed>) = 0 [pid 11386] <... fcntl resumed>) = 0 [pid 11385] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11383] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./525/blkio.bfq.io_wait_time_recursive" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11387] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11387] <... prctl resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11387] setpgid(0, 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", [pid 11387] <... setpgid resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11387] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11386] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./520/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11388 attached [pid 11386] <... futex resumed>) = 0 [pid 11383] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11386] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11385] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 [pid 11383] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./536/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 11387] <... symlink resumed>) = 0 [pid 11386] <... openat resumed>) = 4 [pid 5046] <... unlink resumed>) = 0 [pid 11388] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11387] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11388] <... rseq resumed>) = 0 [pid 5046] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11388] set_robust_list(0x7f504ff7f9a0, 24 [pid 11387] <... symlink resumed>) = 0 [pid 11385] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11388] <... set_robust_list resumed>) = 0 [pid 11385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11388] rt_sigprocmask(SIG_SETMASK, [], [pid 11387] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11385] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11383] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./536/cgroup.cpu" [pid 5049] unlink("./525/cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./520/cgroup.net", [pid 11388] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11387] <... symlink resumed>) = 0 [pid 11385] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11388] open(".", O_RDONLY [pid 11387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11386] +++ killed by SIGIO +++ [pid 11385] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11387] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./520/cgroup.net" [pid 11388] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./536/binderfs", [pid 5049] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 11383] +++ killed by SIGIO +++ [pid 11388] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11387] write(3, "1000", 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] getdents64(3, [pid 5050] unlink("./536/binderfs" [pid 11388] <... futex resumed>) = 1 [pid 11385] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1076, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] close(3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11388] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11385] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5049] <... close resumed>) = 0 [pid 11388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11387] <... write resumed>) = 4 [pid 11385] <... futex resumed>) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5049] rmdir("./525" [pid 5046] close(3 [pid 11388] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11387] close(3 [pid 11385] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11388] <... fcntl resumed>) = 0 [pid 11387] <... close resumed>) = 0 [pid 5050] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... rmdir resumed>) = 0 [pid 5046] rmdir("./520" [pid 11388] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11387] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11388] <... futex resumed>) = 1 [pid 11385] <... futex resumed>) = 0 [pid 5051] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./536/cgroup", [pid 5049] mkdir("./526", 0777 [pid 11387] <... symlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11388] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11385] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11387] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11385] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11388] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11387] <... futex resumed>) = 0 [pid 11385] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] mkdir("./521", 0777 [pid 11387] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... openat resumed>) = 3 [pid 5050] unlink("./536/cgroup" [pid 5046] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5050] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11387] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] newfstatat(3, "", [pid 11387] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11387] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11389 attached [pid 11387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1054 [pid 5051] getdents64(3, [pid 11387] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", [pid 11389] set_robust_list(0x555556ac56a0, 24 [pid 11388] <... openat resumed>) = 4 [pid 11387] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11389] <... set_robust_list resumed>) = 0 [pid 11388] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11387] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 11389] chdir("./526" [pid 11387] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11385] <... futex resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11390 attached [pid 11389] <... chdir resumed>) = 0 [pid 11388] +++ killed by SIGIO +++ [pid 11387] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11387] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./537/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11390] set_robust_list(0x555556ac56a0, 24./strace-static-x86_64: Process 11391 attached ) = 0 [pid 11389] <... prctl resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./536/cgroup.net", [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1044 [pid 11391] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11390] chdir("./521" [pid 11389] setpgid(0, 0 [pid 11387] <... clone3 resumed> => {parent_tid=[1023]}, 88) = 1023 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11391] <... rseq resumed>) = 0 [pid 11390] <... chdir resumed>) = 0 [pid 11389] <... setpgid resumed>) = 0 [pid 11387] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./536/cgroup.net" [pid 11391] set_robust_list(0x7f504ff7f9a0, 24 [pid 11390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11389] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11387] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11385] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 11390] <... prctl resumed>) = 0 [pid 11387] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./537/binderfs", [pid 11387] <... futex resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1048, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11391] <... set_robust_list resumed>) = 0 [pid 11390] setpgid(0, 0 [pid 11387] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11391] rt_sigprocmask(SIG_SETMASK, [], [pid 11390] <... setpgid resumed>) = 0 [pid 11389] <... symlink resumed>) = 0 [pid 5051] unlink("./537/binderfs" [pid 5047] <... restart_syscall resumed>) = 0 [pid 11389] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11390] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11391] open(".", O_RDONLY [pid 5051] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 11389] <... symlink resumed>) = 0 [pid 11391] <... open resumed>) = 3 [pid 11390] <... symlink resumed>) = 0 [pid 11389] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... close resumed>) = 0 [pid 11390] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./537/cgroup", [pid 5047] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11391] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11389] <... symlink resumed>) = 0 [pid 5050] rmdir("./536" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11391] <... futex resumed>) = 1 [pid 11390] <... symlink resumed>) = 0 [pid 11389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11387] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11391] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11390] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11387] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./537/cgroup" [pid 11391] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11389] <... openat resumed>) = 3 [pid 5050] mkdir("./537", 0777 [pid 5047] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 11391] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11390] <... symlink resumed>) = 0 [pid 11389] write(3, "1000", 4 [pid 11387] <... futex resumed>) = 0 [pid 5051] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 11391] <... fcntl resumed>) = 0 [pid 11390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11389] <... write resumed>) = 4 [pid 11387] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11391] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11390] <... openat resumed>) = 3 [pid 11389] close(3 [pid 5051] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] getdents64(3, ./strace-static-x86_64: Process 11392 attached [pid 11391] <... futex resumed>) = 1 [pid 11390] write(3, "1000", 4 [pid 11389] <... close resumed>) = 0 [pid 11387] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11392] set_robust_list(0x555556ac56a0, 24 [pid 11391] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11390] <... write resumed>) = 4 [pid 11389] symlink("/dev/binderfs", "./binderfs" [pid 11387] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11392] <... set_robust_list resumed>) = 0 [pid 11390] close(3 [pid 11391] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11390] <... close resumed>) = 0 [pid 11389] <... symlink resumed>) = 0 [pid 11387] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11387] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11392] chdir("./537" [pid 11389] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11390] symlink("/dev/binderfs", "./binderfs" [pid 11392] <... chdir resumed>) = 0 [pid 11389] <... futex resumed>) = 0 [pid 5051] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./523/cgroup.cpu", [pid 11392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11389] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11392] <... prctl resumed>) = 0 [pid 11391] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11390] <... symlink resumed>) = 0 [pid 11389] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11392] setpgid(0, 0 [pid 11391] <... openat resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1077 [pid 11389] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 5047] unlink("./523/cgroup.cpu" [pid 11390] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11392] <... setpgid resumed>) = 0 [pid 11391] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11389] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11390] <... futex resumed>) = 0 [pid 11389] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11387] <... futex resumed>) = ? [pid 11391] +++ killed by SIGIO +++ [pid 11390] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11392] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] unlink("./537/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 11390] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11389] <... mmap resumed>) = 0x7f504ff5f000 [pid 11392] <... symlink resumed>) = 0 [pid 11390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11389] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11387] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11389] <... mprotect resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11389] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1022, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] umount2("./510", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./523/binderfs", [pid 5051] close(3 [pid 11390] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] openat(AT_FDCWD, "./510", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... close resumed>) = 0 [pid 11390] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11389] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11392] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11390] <... mprotect resumed>) = 0 [pid 5051] rmdir("./537" [pid 11389] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] unlink("./523/binderfs" [pid 5045] <... openat resumed>) = 3 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 11393 attached [pid 11393] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11393] <... rseq resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 11393] set_robust_list(0x7f504ff7f9a0, 24 [pid 5045] umount2("./510/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11393] <... set_robust_list resumed>) = 0 [pid 11390] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11393] rt_sigprocmask(SIG_SETMASK, [], [pid 11392] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./510/cgroup.cpu", [pid 11393] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11393] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11392] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11390] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11389] <... clone3 resumed> => {parent_tid=[1055]}, 88) = 1055 [pid 5051] mkdir("./538", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] newfstatat(AT_FDCWD, "./523/cgroup", [pid 5045] unlink("./510/cgroup.cpu" [pid 11392] <... symlink resumed>) = 0 [pid 11389] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./510/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./510/binderfs", ./strace-static-x86_64: Process 11394 attached [pid 11392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11389] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] unlink("./523/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11394] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11394] <... rseq resumed>) = 0 [pid 11393] <... futex resumed>) = 0 [pid 11389] <... futex resumed>) = 1 [pid 5045] unlink("./510/binderfs" [pid 11394] set_robust_list(0x7f504ff7f9a0, 24 [pid 11393] open(".", O_RDONLY [pid 11394] <... set_robust_list resumed>) = 0 [pid 11393] <... open resumed>) = 3 [pid 11389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11394] rt_sigprocmask(SIG_SETMASK, [], [pid 11392] <... openat resumed>) = 3 [pid 11394] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11393] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11390] <... clone3 resumed> => {parent_tid=[1045]}, 88) = 1045 [pid 5045] umount2("./510/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11394] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11393] <... futex resumed>) = 1 [pid 11392] write(3, "1000", 4 [pid 11390] rt_sigprocmask(SIG_SETMASK, [], [pid 11389] <... futex resumed>) = 0 [pid 5047] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11393] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11392] <... write resumed>) = 4 [pid 11390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11393] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11392] close(3 [pid 11390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11389] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./510/cgroup", [pid 11394] <... futex resumed>) = 0 [pid 11393] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11392] <... close resumed>) = 0 [pid 11390] <... futex resumed>) = 1 [pid 11389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11395 attached [pid 11394] open(".", O_RDONLY [pid 11393] <... fcntl resumed>) = 0 [pid 11392] symlink("/dev/binderfs", "./binderfs" [pid 11390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11395] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11394] <... open resumed>) = 3 [pid 11393] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11392] <... symlink resumed>) = 0 [pid 5045] unlink("./510/cgroup" [pid 11395] chdir("./538" [pid 11392] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1078 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11395] <... chdir resumed>) = 0 [pid 11394] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11393] <... futex resumed>) = 1 [pid 11389] <... futex resumed>) = 0 [pid 11392] <... futex resumed>) = 0 [pid 5047] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 11394] <... futex resumed>) = 1 [pid 11392] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11390] <... futex resumed>) = 0 [pid 11389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11394] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11393] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11392] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11389] <... futex resumed>) = 0 [pid 5045] umount2("./510/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11395] <... prctl resumed>) = 0 [pid 11394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11392] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11390] <... futex resumed>) = 0 [pid 11389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 11395] setpgid(0, 0 [pid 11394] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11393] <... openat resumed>) = 4 [pid 11392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11395] <... setpgid resumed>) = 0 [pid 11394] <... fcntl resumed>) = 0 [pid 11392] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 11395] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11392] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./510/blkio.bfq.io_wait_time_recursive", [pid 11395] <... symlink resumed>) = 0 [pid 11394] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11393] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11392] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] unlink("./523/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11394] <... futex resumed>) = 1 [pid 11392] <... mprotect resumed>) = 0 [pid 11394] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11389] <... futex resumed>) = ? [pid 11395] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11393] +++ killed by SIGIO +++ [pid 5045] unlink("./510/blkio.bfq.io_wait_time_recursive" [pid 11395] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./510/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./510/cgroup.net", [pid 11395] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11395] <... symlink resumed>) = 0 [pid 11392] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] unlink("./510/cgroup.net" [pid 11392] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11390] <... futex resumed>) = 0 [pid 11389] +++ killed by SIGIO +++ [pid 5047] getdents64(3, [pid 11392] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1054, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11396 attached [pid 11395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11394] <... futex resumed>) = 0 [pid 11390] <... futex resumed>) = 1 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11396] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11395] <... openat resumed>) = 3 [pid 11394] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11392] <... clone3 resumed> => {parent_tid=[1078]}, 88) = 1078 [pid 11390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... restart_syscall resumed>) = 0 [pid 11396] <... rseq resumed>) = 0 [pid 11392] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... close resumed>) = 0 [pid 11396] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11395] write(3, "1000", 4 [pid 11394] <... openat resumed>) = 4 [pid 11392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] rmdir("./523" [pid 5045] getdents64(3, [pid 11396] rt_sigprocmask(SIG_SETMASK, [], [pid 11395] <... write resumed>) = 4 [pid 11394] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11395] close(3 [pid 5045] close(3 [pid 11395] <... close resumed>) = 0 [pid 11390] <... futex resumed>) = ? [pid 5049] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11395] symlink("/dev/binderfs", "./binderfs" [pid 11394] +++ killed by SIGIO +++ [pid 11395] <... symlink resumed>) = 0 [pid 5045] rmdir("./510") = 0 [pid 11395] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11395] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11395] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11395] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11390] +++ killed by SIGIO +++ [pid 5047] mkdir("./524", 0777 [pid 11396] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11392] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11395] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] mkdir("./511", 0777 [pid 11396] open(".", O_RDONLY [pid 11395] <... mprotect resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... mkdir resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1044, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... mkdir resumed>) = 0 [pid 11396] <... open resumed>) = 3 [pid 11395] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11392] <... futex resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 11395] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11395] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11397 attached [pid 11396] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11392] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(3, "", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11397] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11396] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11395] <... clone3 resumed> => {parent_tid=[1079]}, 88) = 1079 [pid 11392] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11396] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11397] <... rseq resumed>) = 0 [pid 5046] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11392] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11398 attached [pid 5046] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11398] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... openat resumed>) = 3 [pid 11398] <... set_robust_list resumed>) = 0 [pid 11397] set_robust_list(0x7f504ff7f9a0, 24 [pid 11396] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11392] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11392] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11397] <... set_robust_list resumed>) = 0 [pid 11396] <... fcntl resumed>) = 0 [pid 11397] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11397] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11399 attached [pid 11398] chdir("./524" [pid 11397] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11396] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11395] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1050 [pid 5046] newfstatat(3, "", [pid 11398] <... chdir resumed>) = 0 [pid 11396] <... futex resumed>) = 1 [pid 11395] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11392] <... futex resumed>) = 0 [pid 11399] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11399] <... set_robust_list resumed>) = 0 [pid 11398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11396] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11392] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./526/cgroup.cpu" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1024 [pid 11398] <... prctl resumed>) = 0 [pid 11397] <... futex resumed>) = 0 [pid 11396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11395] <... futex resumed>) = 1 [pid 5046] getdents64(3, [pid 11399] chdir("./511" [pid 11398] setpgid(0, 0 [pid 11397] open(".", O_RDONLY [pid 11396] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11395] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11392] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11399] <... chdir resumed>) = 0 [pid 11398] <... setpgid resumed>) = 0 [pid 11397] <... open resumed>) = 3 [pid 11398] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11397] <... futex resumed>) = 1 [pid 11396] <... openat resumed>) = 4 [pid 11395] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 11399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11397] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11396] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11392] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11399] <... prctl resumed>) = 0 [pid 11398] <... symlink resumed>) = 0 [pid 11397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11396] <... futex resumed>) = ? [pid 11395] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11397] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11395] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11399] setpgid(0, 0 [pid 5049] newfstatat(AT_FDCWD, "./526/binderfs", [pid 5046] unlink("./521/cgroup.cpu" [pid 11399] <... setpgid resumed>) = 0 [pid 11398] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11397] <... fcntl resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11399] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11398] <... symlink resumed>) = 0 [pid 5049] unlink("./526/binderfs" [pid 11397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11398] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11397] <... futex resumed>) = 1 [pid 11395] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11398] <... symlink resumed>) = 0 [pid 11397] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(AT_FDCWD, "./521/binderfs", [pid 11397] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11395] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11397] <... openat resumed>) = 4 [pid 5046] unlink("./521/binderfs" [pid 11399] <... symlink resumed>) = 0 [pid 11398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 [pid 11399] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11398] <... openat resumed>) = 3 [pid 11396] +++ killed by SIGIO +++ [pid 11392] +++ killed by SIGIO +++ [pid 5049] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1077, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11399] <... symlink resumed>) = 0 [pid 11395] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] newfstatat(AT_FDCWD, "./526/cgroup", [pid 11399] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11398] write(3, "1000", 4 [pid 11397] <... futex resumed>) = ? [pid 5046] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11398] <... write resumed>) = 4 [pid 11397] +++ killed by SIGIO +++ [pid 5050] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11399] <... symlink resumed>) = 0 [pid 11398] close(3 [pid 5049] unlink("./526/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 11399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] newfstatat(AT_FDCWD, "./521/cgroup", [pid 11398] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11398] symlink("/dev/binderfs", "./binderfs" [pid 5050] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11395] +++ killed by SIGIO +++ [pid 11399] <... openat resumed>) = 3 [pid 11399] write(3, "1000", 4 [pid 11398] <... symlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./521/cgroup" [pid 11399] <... write resumed>) = 4 [pid 11398] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1078, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] newfstatat(3, "", [pid 5049] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", [pid 11399] close(3 [pid 11398] <... futex resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11399] <... close resumed>) = 0 [pid 11398] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, [pid 5046] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11399] symlink("/dev/binderfs", "./binderfs" [pid 11398] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11399] <... symlink resumed>) = 0 [pid 11398] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 11399] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11398] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11399] <... futex resumed>) = 0 [pid 11398] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11399] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11398] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5046] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 11399] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11398] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11399] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11398] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5050] unlink("./537/cgroup.cpu" [pid 11399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11398] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... unlink resumed>) = 0 [pid 11399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5046] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11399] <... mmap resumed>) = 0x7f504ff5f000 [pid 11398] <... clone3 resumed> => {parent_tid=[1051]}, 88) = 1051 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11399] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11398] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./521/cgroup.net", ./strace-static-x86_64: Process 11400 attached [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11400] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11398] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11400] set_robust_list(0x7f504ff7f9a0, 24 [pid 11399] <... mprotect resumed>) = 0 [pid 11398] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./537/binderfs", [pid 11400] <... set_robust_list resumed>) = 0 [pid 11399] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11398] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./521/cgroup.net" [pid 11400] rt_sigprocmask(SIG_SETMASK, [], [pid 11399] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11398] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] unlink("./537/binderfs" [pid 5049] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11400] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11401 attached [pid 11401] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11399] <... clone3 resumed> => {parent_tid=[1025]}, 88) = 1025 [pid 5046] getdents64(3, [pid 11401] <... rseq resumed>) = 0 [pid 11399] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11401] set_robust_list(0x7f504ff7f9a0, 24 [pid 11399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11400] open(".", O_RDONLY [pid 5051] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11401] <... set_robust_list resumed>) = 0 [pid 11400] <... open resumed>) = 3 [pid 11399] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./537/cgroup", [pid 5046] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11401] rt_sigprocmask(SIG_SETMASK, [], [pid 11400] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11399] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./526/cgroup.net", [pid 5051] getdents64(3, [pid 5046] <... close resumed>) = 0 [pid 11401] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11400] <... futex resumed>) = 1 [pid 11399] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11398] <... futex resumed>) = 0 [pid 5050] unlink("./537/cgroup" [pid 11401] open(".", O_RDONLY [pid 11400] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] rmdir("./521" [pid 5051] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./526/cgroup.net" [pid 11401] <... open resumed>) = 3 [pid 11398] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... rmdir resumed>) = 0 [pid 11400] <... futex resumed>) = 0 [pid 11398] <... futex resumed>) = 1 [pid 5051] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 11400] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] <... unlink resumed>) = 0 [pid 11401] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11400] <... fcntl resumed>) = 0 [pid 11398] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5046] mkdir("./522", 0777 [pid 11401] <... futex resumed>) = 1 [pid 11400] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11399] <... futex resumed>) = 0 [pid 11398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] unlink("./538/cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11401] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11400] <... futex resumed>) = 0 [pid 11399] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11398] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] close(3 [pid 11400] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11398] <... futex resumed>) = 0 [pid 5051] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 11401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11399] <... futex resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11401] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11400] <... openat resumed>) = 4 [pid 11399] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11398] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 11401] <... fcntl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./538/binderfs", [pid 5050] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] rmdir("./526" [pid 11401] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11400] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 11398] +++ killed by SIGIO +++ [pid 5051] unlink("./538/binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1050, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11401] <... futex resumed>) = 1 [pid 5050] unlink("./537/cgroup.net" [pid 5049] mkdir("./527", 0777 [pid 11399] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11399] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11401] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11399] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11399] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... mkdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11402 attached [pid 11401] <... openat resumed>) = ? [pid 5051] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1046 [pid 5050] <... close resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] rmdir("./537"./strace-static-x86_64: Process 11403 attached [pid 11402] set_robust_list(0x555556ac56a0, 24 [pid 11401] +++ killed by SIGIO +++ [pid 11399] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1056 [pid 11403] set_robust_list(0x555556ac56a0, 24 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1024, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11403] <... set_robust_list resumed>) = 0 [pid 11402] <... set_robust_list resumed>) = 0 [pid 11402] chdir("./522" [pid 5051] newfstatat(AT_FDCWD, "./538/cgroup", [pid 5050] <... rmdir resumed>) = 0 [pid 11402] <... chdir resumed>) = 0 [pid 11402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] umount2("./511", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11402] <... prctl resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11403] chdir("./527" [pid 11402] setpgid(0, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] openat(AT_FDCWD, "./511", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11402] <... setpgid resumed>) = 0 [pid 5051] unlink("./538/cgroup" [pid 5050] mkdir("./538", 0777 [pid 5047] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11402] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", [pid 11402] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11402] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] unlink("./538/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] getdents64(3, [pid 11402] <... symlink resumed>) = 0 [pid 5051] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11402] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./511/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11403] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./511/cgroup.cpu", [pid 5051] unlink("./538/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./511/cgroup.cpu" [pid 11403] <... prctl resumed>) = 0 [pid 11402] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5051] rmdir("./538" [pid 11403] setpgid(0, 0 [pid 11402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./511/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11403] <... setpgid resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./524/cgroup.cpu", [pid 11403] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11402] <... openat resumed>) = 3 [pid 11403] <... symlink resumed>) = 0 [pid 11402] write(3, "1000", 4 [pid 5051] mkdir("./539", 0777 [pid 5047] unlink("./524/cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./511/binderfs", ./strace-static-x86_64: Process 11404 attached [pid 11403] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] <... mkdir resumed>) = 0 [pid 11404] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1079 [pid 11404] <... set_robust_list resumed>) = 0 [pid 11404] chdir("./538" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11404] <... chdir resumed>) = 0 [pid 11404] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11403] <... symlink resumed>) = 0 [pid 11404] <... prctl resumed>) = 0 [pid 11404] setpgid(0, 0 [pid 11402] <... write resumed>) = 4 [pid 5047] <... unlink resumed>) = 0 [pid 11404] <... setpgid resumed>) = 0 [pid 11403] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11402] close(3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./511/binderfs"./strace-static-x86_64: Process 11405 attached [pid 11404] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11403] <... symlink resumed>) = 0 [pid 11402] <... close resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11405] set_robust_list(0x555556ac56a0, 24 [pid 11404] <... symlink resumed>) = 0 [pid 11403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11402] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1080 [pid 5047] newfstatat(AT_FDCWD, "./524/binderfs", [pid 11405] <... set_robust_list resumed>) = 0 [pid 11404] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu") = 0 [pid 11402] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./511/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11404] symlink("/syzcgroup/net/syz4", "./cgroup.net") = 0 [pid 11404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11404] write(3, "1000", 4) = 4 [pid 11404] close(3) = 0 [pid 11403] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./524/binderfs" [pid 11404] symlink("/dev/binderfs", "./binderfs" [pid 11405] chdir("./539" [pid 11404] <... symlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./511/cgroup", [pid 11402] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11405] <... chdir resumed>) = 0 [pid 11404] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11403] write(3, "1000", 4 [pid 11402] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11404] <... futex resumed>) = 0 [pid 11403] <... write resumed>) = 4 [pid 11402] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./511/cgroup" [pid 11405] <... prctl resumed>) = 0 [pid 11404] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11403] close(3 [pid 11402] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11405] setpgid(0, 0 [pid 11403] <... close resumed>) = 0 [pid 11402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] newfstatat(AT_FDCWD, "./524/cgroup", [pid 11405] <... setpgid resumed>) = 0 [pid 11403] symlink("/dev/binderfs", "./binderfs" [pid 11402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11404] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11404] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11404] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11404] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11404] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11403] <... symlink resumed>) = 0 [pid 11402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11404] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11404] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11406 attached [pid 11406] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11404] <... clone3 resumed> => {parent_tid=[1080]}, 88) = 1080 [pid 11406] <... rseq resumed>) = 0 [pid 11404] rt_sigprocmask(SIG_SETMASK, [], [pid 11406] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11404] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11404] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11406] open(".", O_RDONLY [pid 11404] <... futex resumed>) = 0 [pid 11406] <... open resumed>) = 3 [pid 11404] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11406] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11404] <... futex resumed>) = 0 [pid 11402] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] unlink("./524/cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11406] <... futex resumed>) = 1 [pid 11406] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11404] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11405] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11404] <... futex resumed>) = 0 [pid 11406] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11404] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./511/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11406] <... fcntl resumed>) = 0 [pid 11403] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11402] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... unlink resumed>) = 0 [pid 11406] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11405] <... symlink resumed>) = 0 [pid 11406] <... futex resumed>) = 1 [pid 11404] <... futex resumed>) = 0 [pid 11402] <... mprotect resumed>) = 0 [pid 5047] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11406] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11405] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11404] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11403] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11404] <... futex resumed>) = 0 [pid 11403] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11402] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./511/blkio.bfq.io_wait_time_recursive", [pid 11406] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11405] <... symlink resumed>) = 0 [pid 11404] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11403] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11402] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 11406] <... openat resumed>) = 4 [pid 11405] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11403] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11403] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11407 attached [pid 11406] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11404] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11403] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./511/blkio.bfq.io_wait_time_recursive" [pid 11407] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11403] <... mmap resumed>) = 0x7f504ff5f000 [pid 11407] <... rseq resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11407] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11405] <... symlink resumed>) = 0 [pid 11403] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11402] <... clone3 resumed> => {parent_tid=[1047]}, 88) = 1047 [pid 5047] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11407] rt_sigprocmask(SIG_SETMASK, [], [pid 11405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11403] <... mprotect resumed>) = 0 [pid 11402] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./511/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11407] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11406] +++ killed by SIGIO +++ [pid 11404] +++ killed by SIGIO +++ [pid 11403] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11405] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11407] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11402] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1079, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] newfstatat(AT_FDCWD, "./511/cgroup.net", [pid 11407] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11405] write(3, "1000", 4 [pid 11402] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11405] <... write resumed>) = 4 [pid 11402] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11407] open(".", O_RDONLY [pid 11405] close(3 [pid 11403] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./524/cgroup.net" [pid 5045] unlink("./511/cgroup.net" [pid 5050] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 11405] <... close resumed>) = 0 [pid 11405] symlink("/dev/binderfs", "./binderfs" [pid 11403] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] getdents64(3, [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11408 attached [pid 5050] getdents64(3, [pid 11408] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11405] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] getdents64(3, [pid 5047] close(3 [pid 11408] <... rseq resumed>) = 0 [pid 11407] <... open resumed>) = 3 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11408] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... close resumed>) = 0 [pid 5045] close(3 [pid 11408] <... set_robust_list resumed>) = 0 [pid 11407] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11405] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11403] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11408] rt_sigprocmask(SIG_SETMASK, [], [pid 11407] <... futex resumed>) = 1 [pid 11402] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 5045] <... close resumed>) = 0 [pid 11408] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11407] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11402] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11405] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./524" [pid 11403] rt_sigprocmask(SIG_SETMASK, [], [pid 11408] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11407] <... fcntl resumed>) = 0 [pid 11405] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11403] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11402] <... futex resumed>) = 0 [pid 5045] rmdir("./511" [pid 11405] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11403] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11402] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./538/cgroup.cpu" [pid 11405] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 11408] <... futex resumed>) = 0 [pid 11405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11403] <... futex resumed>) = 1 [pid 5047] <... rmdir resumed>) = 0 [pid 11407] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11403] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11408] open(".", O_RDONLY [pid 11405] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11408] <... open resumed>) = 3 [pid 11405] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./538/binderfs", [pid 5045] <... rmdir resumed>) = 0 [pid 11405] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] mkdir("./525", 0777 [pid 11408] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./538/binderfs" [pid 11408] <... futex resumed>) = 1 [pid 11405] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11403] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11408] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11403] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... mkdir resumed>) = 0 [pid 11408] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11403] <... futex resumed>) = 0 [pid 11403] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11408] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 5050] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11408] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11403] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11408] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11403] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./538/cgroup", [pid 11408] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11403] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11408] <... openat resumed>) = 4 [pid 11407] <... futex resumed>) = 1 [pid 11405] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11402] <... futex resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] mkdir("./512", 0777 [pid 11407] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11402] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11407] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11402] <... futex resumed>) = 0 [pid 11407] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] unlink("./538/cgroup" [pid 11402] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11407] <... openat resumed>) = 4 [pid 11402] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11408] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11407] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11403] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11409 attached [pid 11408] <... futex resumed>) = ? [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11409] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11408] +++ killed by SIGIO +++ [pid 11407] +++ killed by SIGIO +++ [pid 11405] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 5050] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./538/blkio.bfq.io_wait_time_recursive") = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11409] <... rseq resumed>) = 0 [pid 5050] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11409] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11409] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11410 attached NULL, 8) = 0 [pid 11405] rt_sigprocmask(SIG_SETMASK, [], [pid 11403] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11410] set_robust_list(0x555556ac56a0, 24 [pid 11409] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11410] <... set_robust_list resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 11410] chdir("./525" [pid 11405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1056, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11410] <... chdir resumed>) = 0 [pid 5050] unlink("./538/cgroup.net" [pid 11410] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... unlink resumed>) = 0 [pid 11410] <... prctl resumed>) = 0 [pid 11410] setpgid(0, 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11410] <... setpgid resumed>) = 0 [pid 11410] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] close(3./strace-static-x86_64: Process 11411 attached [pid 11405] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11411] set_robust_list(0x555556ac56a0, 24 [pid 11409] <... futex resumed>) = 0 [pid 11405] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... close resumed>) = 0 [pid 11411] <... set_robust_list resumed>) = 0 [pid 11409] open(".", O_RDONLY [pid 11411] chdir("./512" [pid 11410] <... symlink resumed>) = 0 [pid 11409] <... open resumed>) = 3 [pid 11402] +++ killed by SIGIO +++ [pid 5050] rmdir("./538" [pid 5049] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1052 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1046, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1026 [pid 11410] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11409] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11411] <... chdir resumed>) = 0 [pid 11410] <... symlink resumed>) = 0 [pid 11409] <... futex resumed>) = 1 [pid 11405] <... futex resumed>) = 0 [pid 11409] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11405] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] mkdir("./539", 0777 [pid 5049] <... openat resumed>) = 3 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11410] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11405] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11411] <... prctl resumed>) = 0 [pid 11409] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11405] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11409] <... fcntl resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11411] setpgid(0, 0) = 0 [pid 11410] <... symlink resumed>) = 0 [pid 11409] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11412 attached [pid 11411] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11409] <... futex resumed>) = 1 [pid 11405] <... futex resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11412] set_robust_list(0x555556ac56a0, 24 [pid 11410] <... openat resumed>) = 3 [pid 11409] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11405] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1081 [pid 5049] getdents64(3, [pid 11412] <... set_robust_list resumed>) = 0 [pid 11411] <... symlink resumed>) = 0 [pid 11410] write(3, "1000", 4 [pid 11405] <... futex resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11411] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11410] <... write resumed>) = 4 [pid 11409] <... openat resumed>) = 4 [pid 11405] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] newfstatat(3, "", [pid 11412] chdir("./539" [pid 11411] <... symlink resumed>) = 0 [pid 11410] close(3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11412] <... chdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11411] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11410] <... close resumed>) = 0 [pid 5046] getdents64(3, [pid 11410] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11410] <... symlink resumed>) = 0 [pid 5046] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11410] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11411] <... symlink resumed>) = 0 [pid 11410] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 11412] <... prctl resumed>) = 0 [pid 11411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11410] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11412] setpgid(0, 0 [pid 11411] <... openat resumed>) = 3 [pid 11410] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11409] +++ killed by SIGIO +++ [pid 11405] +++ killed by SIGIO +++ [pid 5049] unlink("./527/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11412] <... setpgid resumed>) = 0 [pid 11410] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1080, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11410] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11412] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11410] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11411] write(3, "1000", 4 [pid 11410] <... mmap resumed>) = 0x7f504ff5f000 [pid 11411] <... write resumed>) = 4 [pid 11410] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] unlink("./522/cgroup.cpu" [pid 11411] close(3 [pid 11410] <... mprotect resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11412] <... symlink resumed>) = 0 [pid 11411] <... close resumed>) = 0 [pid 11410] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... unlink resumed>) = 0 [pid 11412] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11412] <... symlink resumed>) = 0 [pid 11411] symlink("/dev/binderfs", "./binderfs" [pid 11410] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11411] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./527/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./522/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./527/binderfs" [pid 5046] unlink("./522/binderfs" [pid 11410] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11412] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11411] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5049] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./527/cgroup", [pid 5046] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11412] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... openat resumed>) = 3 [pid 5049] unlink("./527/cgroup"./strace-static-x86_64: Process 11413 attached [pid 11412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11411] <... futex resumed>) = 0 [pid 11410] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 5051] newfstatat(3, "", [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./522/cgroup", [pid 11413] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11411] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11410] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11413] <... rseq resumed>) = 0 [pid 11411] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11410] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11413] set_robust_list(0x7f504ff7f9a0, 24 [pid 11412] <... openat resumed>) = 3 [pid 11411] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11413] <... set_robust_list resumed>) = 0 [pid 11412] write(3, "1000", 4 [pid 11411] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11410] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./522/cgroup" [pid 11413] rt_sigprocmask(SIG_SETMASK, [], [pid 11412] <... write resumed>) = 4 [pid 11411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11410] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 5046] <... unlink resumed>) = 0 [pid 11413] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11412] close(3 [pid 11411] <... mmap resumed>) = 0x7f504ff5f000 [pid 11410] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11413] open(".", O_RDONLY [pid 11412] <... close resumed>) = 0 [pid 11411] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11412] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11411] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", [pid 11412] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11413] <... open resumed>) = 3 [pid 5049] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 11413] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11411] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11412] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./539/cgroup.cpu" [pid 11413] <... futex resumed>) = 1 [pid 11410] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 11413] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11410] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11413] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11410] <... futex resumed>) = 0 [pid 5049] unlink("./527/cgroup.net" [pid 5046] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11413] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11412] <... futex resumed>) = 0 [pid 11411] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11410] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11413] <... fcntl resumed>) = 0 [pid 11412] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11411] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11413] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11412] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./522/cgroup.net", ./strace-static-x86_64: Process 11414 attached [pid 11413] <... futex resumed>) = 1 [pid 11412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11410] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 11414] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11412] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11411] <... clone3 resumed> => {parent_tid=[1027]}, 88) = 1027 [pid 5051] newfstatat(AT_FDCWD, "./539/binderfs", [pid 11414] <... rseq resumed>) = 0 [pid 11412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11411] rt_sigprocmask(SIG_SETMASK, [], [pid 11414] set_robust_list(0x7f504ff7f9a0, 24 [pid 11413] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11412] <... mmap resumed>) = 0x7f504ff5f000 [pid 11411] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11410] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11414] <... set_robust_list resumed>) = 0 [pid 11413] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11412] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11411] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11410] <... futex resumed>) = 0 [pid 5051] unlink("./539/binderfs" [pid 5049] close(3 [pid 5046] unlink("./522/cgroup.net" [pid 11414] rt_sigprocmask(SIG_SETMASK, [], [pid 11413] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11412] <... mprotect resumed>) = 0 [pid 11411] <... futex resumed>) = 0 [pid 11410] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11414] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11413] <... openat resumed>) = 4 [pid 11412] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11411] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11410] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] rmdir("./527" [pid 5046] getdents64(3, [pid 11414] open(".", O_RDONLY [pid 11413] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11412] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11410] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11414] <... open resumed>) = 3 [pid 11413] <... futex resumed>) = ? [pid 11412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./539/cgroup", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11414] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11414] <... futex resumed>) = 1 [pid 11411] <... futex resumed>) = 0 [pid 11414] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11411] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./539/cgroup" [pid 11414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11411] <... futex resumed>) = 0 [pid 11414] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11411] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 11414] <... fcntl resumed>) = 0 [pid 11413] +++ killed by SIGIO +++ [pid 11410] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11415 attached [pid 11414] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11412] <... clone3 resumed> => {parent_tid=[1082]}, 88) = 1082 [pid 5051] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./528", 0777 [pid 5046] close(3 [pid 11415] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11414] <... futex resumed>) = 1 [pid 11412] rt_sigprocmask(SIG_SETMASK, [], [pid 11411] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11415] <... rseq resumed>) = 0 [pid 11414] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11412] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11411] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1052, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 11415] set_robust_list(0x7f504ff7f9a0, 24 [pid 11412] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11411] <... futex resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] rmdir("./522" [pid 11415] <... set_robust_list resumed>) = 0 [pid 11412] <... futex resumed>) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11415] rt_sigprocmask(SIG_SETMASK, [], [pid 11414] <... openat resumed>) = 4 [pid 11412] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... rmdir resumed>) = 0 [pid 11415] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11411] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", [pid 11414] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11415] open(".", O_RDONLY [pid 11414] +++ killed by SIGIO +++ [pid 5051] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./523", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11416 attached [pid 11415] <... open resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... mkdir resumed>) = 0 [pid 11415] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11416] set_robust_list(0x555556ac56a0, 24 [pid 11415] <... futex resumed>) = 1 [pid 11412] <... futex resumed>) = 0 [pid 5051] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1058 [pid 5047] <... openat resumed>) = 3 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11416] <... set_robust_list resumed>) = 0 [pid 11412] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 11412] <... futex resumed>) = 0 [pid 11415] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11412] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11411] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11415] <... fcntl resumed>) = 0 [pid 11416] chdir("./528" [pid 11415] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1026, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11416] <... chdir resumed>) = 0 [pid 11412] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11416] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11412] <... futex resumed>) = 0 [pid 11416] <... prctl resumed>) = 0 [pid 11412] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./539/cgroup.net" [pid 11415] <... futex resumed>) = 1 [pid 11412] <... futex resumed>) = 0 [pid 11415] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11412] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=48000000} [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11417 attached [pid 11416] setpgid(0, 0 [pid 11415] <... openat resumed>) = 4 [pid 11412] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./512", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11417] set_robust_list(0x555556ac56a0, 24 [pid 11416] <... setpgid resumed>) = 0 [pid 11415] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1048 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11417] <... set_robust_list resumed>) = 0 [pid 11416] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11415] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 5045] openat(AT_FDCWD, "./512", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11417] chdir("./523" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11417] <... chdir resumed>) = 0 [pid 11416] <... symlink resumed>) = 0 [pid 11412] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5047] unlink("./525/cgroup.cpu" [pid 5045] <... openat resumed>) = 3 [pid 11417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11416] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] <... close resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1081, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] newfstatat(3, "", [pid 11417] <... prctl resumed>) = 0 [pid 5051] rmdir("./539" [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11417] setpgid(0, 0 [pid 5047] <... unlink resumed>) = 0 [pid 11417] <... setpgid resumed>) = 0 [pid 11416] <... symlink resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11416] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] <... rmdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11417] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11416] <... symlink resumed>) = 0 [pid 5051] mkdir("./540", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11417] <... symlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] newfstatat(AT_FDCWD, "./525/binderfs", [pid 5045] umount2("./512/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11417] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11416] <... openat resumed>) = 3 [pid 5051] <... mkdir resumed>) = 0 [pid 11416] write(3, "1000", 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11416] <... write resumed>) = 4 [pid 11417] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./512/cgroup.cpu", [pid 11416] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11416] <... close resumed>) = 0 [pid 11416] symlink("/dev/binderfs", "./binderfs" [pid 5045] unlink("./512/cgroup.cpu" [pid 11417] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11416] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./525/binderfs" [pid 11416] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11416] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11417] <... symlink resumed>) = 0 [pid 11416] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./512/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11416] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11418 attached [pid 11417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11416] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./525/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./512/binderfs", [pid 11418] set_robust_list(0x555556ac56a0, 24 [pid 11416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1082 [pid 5050] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11417] <... openat resumed>) = 3 [pid 11416] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] unlink("./512/binderfs" [pid 11418] <... set_robust_list resumed>) = 0 [pid 11417] write(3, "1000", 4 [pid 11418] chdir("./540" [pid 11417] <... write resumed>) = 4 [pid 11416] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] unlink("./525/cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11418] <... chdir resumed>) = 0 [pid 11417] close(3 [pid 11416] <... mprotect resumed>) = 0 [pid 5050] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11417] <... close resumed>) = 0 [pid 11418] <... prctl resumed>) = 0 [pid 11417] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 11418] setpgid(0, 0 [pid 11417] <... symlink resumed>) = 0 [pid 11416] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./512/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11418] <... setpgid resumed>) = 0 [pid 11418] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 11417] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11417] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11418] <... symlink resumed>) = 0 [pid 11417] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11416] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./539/cgroup.cpu" [pid 11418] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11417] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11416] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11417] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ./strace-static-x86_64: Process 11419 attached [pid 11418] <... symlink resumed>) = 0 [pid 11417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./525/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./512/cgroup", [pid 11419] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11418] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11417] <... mmap resumed>) = 0x7f504ff5f000 [pid 11416] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11419] <... rseq resumed>) = 0 [pid 11417] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11416] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./512/cgroup" [pid 11419] set_robust_list(0x7f504ff7f9a0, 24 [pid 11418] <... symlink resumed>) = 0 [pid 11417] <... mprotect resumed>) = 0 [pid 11416] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11419] <... set_robust_list resumed>) = 0 [pid 11418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11416] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11419] rt_sigprocmask(SIG_SETMASK, [], [pid 11417] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] newfstatat(AT_FDCWD, "./539/binderfs", [pid 5047] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11419] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11418] <... openat resumed>) = 3 [pid 11417] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11416] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11418] write(3, "1000", 4 [pid 11419] open(".", O_RDONLY [pid 5050] unlink("./539/binderfs" [pid 5047] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 5045] umount2("./512/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11419] <... open resumed>) = 3 [pid 11418] <... write resumed>) = 4 [pid 11417] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11416] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11419] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11418] close(3 [pid 11416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11419] <... futex resumed>) = 0 [pid 11418] <... close resumed>) = 0 [pid 11416] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./525/cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./512/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11420 attached [pid 11419] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11418] symlink("/dev/binderfs", "./binderfs" [pid 11416] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11420] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11419] <... fcntl resumed>) = 0 [pid 11416] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./539/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11419] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11417] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 [pid 11416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11420] <... rseq resumed>) = 0 [pid 11419] <... futex resumed>) = 0 [pid 11418] <... symlink resumed>) = 0 [pid 11417] rt_sigprocmask(SIG_SETMASK, [], [pid 11416] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] unlink("./512/blkio.bfq.io_wait_time_recursive" [pid 11420] set_robust_list(0x7f504ff7f9a0, 24 [pid 11419] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11416] <... futex resumed>) = 0 [pid 11420] <... set_robust_list resumed>) = 0 [pid 5050] unlink("./539/cgroup" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11420] rt_sigprocmask(SIG_SETMASK, [], [pid 11419] <... openat resumed>) = 4 [pid 11420] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11419] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11418] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11417] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11416] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5047] close(3 [pid 5045] umount2("./512/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11420] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11419] <... futex resumed>) = ? [pid 11418] <... futex resumed>) = 0 [pid 11417] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11419] +++ killed by SIGIO +++ [pid 11418] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11417] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11418] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11417] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./512/cgroup.net", [pid 11418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11420] open(".", O_RDONLY [pid 11418] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] rmdir("./525" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11420] <... open resumed>) = 3 [pid 11418] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", [pid 5047] <... rmdir resumed>) = 0 [pid 5045] unlink("./512/cgroup.net" [pid 11416] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1058, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11420] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11418] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 5047] mkdir("./526", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 11418] <... mprotect resumed>) = 0 [pid 11420] <... futex resumed>) = 1 [pid 11417] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11420] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11418] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11417] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11420] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 5050] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11420] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11418] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11417] <... futex resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11420] <... futex resumed>) = 0 [pid 11417] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11420] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 5045] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./539/cgroup.net") = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 11418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11417] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./512"./strace-static-x86_64: Process 11422 attached [pid 11420] <... futex resumed>) = 0 [pid 11417] <... futex resumed>) = 1 [pid 5050] rmdir("./539" [pid 5049] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11422] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11420] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11417] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11421 attached [pid 11422] <... rseq resumed>) = 0 [pid 11418] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 11417] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... openat resumed>) = 3 [pid 11422] set_robust_list(0x7f504ff7f9a0, 24 [pid 11421] set_robust_list(0x555556ac56a0, 24 [pid 11420] <... openat resumed>) = 4 [pid 11418] rt_sigprocmask(SIG_SETMASK, [], [pid 11417] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] mkdir("./540", 0777 [pid 5049] newfstatat(3, "", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1054 [pid 5045] mkdir("./513", 0777 [pid 11422] <... set_robust_list resumed>) = 0 [pid 11421] <... set_robust_list resumed>) = 0 [pid 11418] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11418] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11422] rt_sigprocmask(SIG_SETMASK, [], [pid 11421] chdir("./526" [pid 11418] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5045] <... mkdir resumed>) = 0 [pid 11422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11421] <... chdir resumed>) = 0 [pid 11418] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11422] open(".", O_RDONLY [pid 11421] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11422] <... open resumed>) = 3 [pid 11421] <... prctl resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11422] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11421] setpgid(0, 0 [pid 5049] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 11421] <... setpgid resumed>) = 0 [pid 11422] <... futex resumed>) = 1 [pid 11422] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11418] <... futex resumed>) = 0 [pid 11418] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11422] <... futex resumed>) = 0 [pid 11421] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11418] <... futex resumed>) = 1 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11421] <... symlink resumed>) = 0 [pid 5049] unlink("./528/cgroup.cpu") = 0 [pid 11421] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu") = 0 [pid 5049] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./528/binderfs", [pid 11422] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11421] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11418] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11422] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11422] <... futex resumed>) = 0 [pid 11420] +++ killed by SIGIO +++ [pid 11418] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11417] +++ killed by SIGIO +++ [pid 11422] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11418] <... futex resumed>) = 0 [pid 11421] <... symlink resumed>) = 0 [pid 11418] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./528/binderfs" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1048, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 11423 attached [pid 11422] <... openat resumed>) = 4 [pid 11421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11424 attached [pid 11423] set_robust_list(0x555556ac56a0, 24 [pid 11422] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11421] <... openat resumed>) = 3 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1083 [pid 5049] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11424] set_robust_list(0x555556ac56a0, 24 [pid 11423] <... set_robust_list resumed>) = 0 [pid 11421] write(3, "1000", 4 [pid 11418] <... futex resumed>) = ? [pid 5046] <... restart_syscall resumed>) = 0 [pid 11424] <... set_robust_list resumed>) = 0 [pid 11423] chdir("./540" [pid 11422] +++ killed by SIGIO +++ [pid 11421] <... write resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1028 [pid 11424] chdir("./513" [pid 11423] <... chdir resumed>) = 0 [pid 11421] close(3 [pid 5049] newfstatat(AT_FDCWD, "./528/cgroup", [pid 11424] <... chdir resumed>) = 0 [pid 11423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11421] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11423] <... prctl resumed>) = 0 [pid 11421] symlink("/dev/binderfs", "./binderfs" [pid 5049] unlink("./528/cgroup" [pid 5046] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11423] setpgid(0, 0 [pid 11418] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11424] <... prctl resumed>) = 0 [pid 11423] <... setpgid resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11424] setpgid(0, 0 [pid 11421] <... symlink resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1082, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11424] <... setpgid resumed>) = 0 [pid 11421] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11423] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 11424] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11421] <... futex resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11423] <... symlink resumed>) = 0 [pid 11421] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11424] <... symlink resumed>) = 0 [pid 11423] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11421] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 11424] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11423] <... symlink resumed>) = 0 [pid 11421] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11424] <... symlink resumed>) = 0 [pid 11423] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11421] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 11424] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11423] <... symlink resumed>) = 0 [pid 11421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11424] <... symlink resumed>) = 0 [pid 11423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11421] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./523/cgroup.cpu", [pid 11424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11423] <... openat resumed>) = 3 [pid 11421] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(3, "", [pid 5049] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11424] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11423] write(3, "1000", 4 [pid 11421] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./528/cgroup.net", [pid 5051] getdents64(3, [pid 11424] write(3, "1000", 4 [pid 5046] unlink("./523/cgroup.cpu" [pid 11424] <... write resumed>) = 4 [pid 11423] <... write resumed>) = 4 [pid 11421] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11424] close(3 [pid 11423] close(3 [pid 11421] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./528/cgroup.net" [pid 5046] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11424] <... close resumed>) = 0 [pid 11423] <... close resumed>) = 0 [pid 11421] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11425 attached [pid 11424] symlink("/dev/binderfs", "./binderfs" [pid 11423] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 5049] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./523/binderfs", [pid 11425] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11424] <... symlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11425] <... rseq resumed>) = 0 [pid 11424] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11423] <... symlink resumed>) = 0 [pid 11421] <... clone3 resumed> => {parent_tid=[1055]}, 88) = 1055 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11425] set_robust_list(0x7f504ff7f9a0, 24 [pid 11424] <... futex resumed>) = 0 [pid 11423] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11421] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./540/cgroup.cpu" [pid 5049] <... close resumed>) = 0 [pid 5046] unlink("./523/binderfs" [pid 11425] <... set_robust_list resumed>) = 0 [pid 11424] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11423] <... futex resumed>) = 0 [pid 11421] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] rmdir("./528" [pid 5046] <... unlink resumed>) = 0 [pid 11425] rt_sigprocmask(SIG_SETMASK, [], [pid 11424] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11423] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11421] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11424] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11423] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11421] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11425] open(".", O_RDONLY [pid 11424] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11423] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11421] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./540/binderfs", [pid 5049] mkdir("./529", 0777 [pid 5046] newfstatat(AT_FDCWD, "./523/cgroup", [pid 11425] <... open resumed>) = 3 [pid 11424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11425] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11424] <... mmap resumed>) = 0x7f504ff5f000 [pid 11423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] unlink("./540/binderfs" [pid 5049] <... mkdir resumed>) = 0 [pid 5046] unlink("./523/cgroup" [pid 11425] <... futex resumed>) = 1 [pid 11423] <... mmap resumed>) = 0x7f504ff5f000 [pid 11421] <... futex resumed>) = 0 [pid 11425] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11424] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11423] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11421] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11425] <... fcntl resumed>) = 0 [pid 11424] <... mprotect resumed>) = 0 [pid 11423] <... mprotect resumed>) = 0 [pid 11421] <... futex resumed>) = 0 [pid 5046] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11425] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11424] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11425] <... futex resumed>) = 0 [pid 11423] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11421] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11425] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11423] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11421] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./540/cgroup", [pid 11425] <... futex resumed>) = 0 [pid 11424] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11421] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11426 attached [pid 11425] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11423] <... clone3 resumed> => {parent_tid=[1084]}, 88) = 1084 [pid 11421] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./540/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11428 attached ./strace-static-x86_64: Process 11427 attached [pid 11426] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11425] <... openat resumed>) = 4 [pid 11423] rt_sigprocmask(SIG_SETMASK, [], [pid 11421] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1060 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11428] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11427] set_robust_list(0x555556ac56a0, 24 [pid 11426] <... rseq resumed>) = 0 [pid 11425] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11424] <... clone3 resumed> => {parent_tid=[1029]}, 88) = 1029 [pid 11423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11421] read(1454134784, [pid 5051] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 11428] <... rseq resumed>) = 0 [pid 11427] <... set_robust_list resumed>) = 0 [pid 11426] set_robust_list(0x7f504ff7f9a0, 24 [pid 11424] rt_sigprocmask(SIG_SETMASK, [], [pid 11423] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11428] set_robust_list(0x7f504ff7f9a0, 24 [pid 11427] chdir("./529" [pid 11426] <... set_robust_list resumed>) = 0 [pid 11424] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11423] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11428] <... set_robust_list resumed>) = 0 [pid 11427] <... chdir resumed>) = 0 [pid 11426] rt_sigprocmask(SIG_SETMASK, [], [pid 11424] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11423] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11426] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 11427] <... prctl resumed>) = 0 [pid 11428] rt_sigprocmask(SIG_SETMASK, [], [pid 11427] setpgid(0, 0 [pid 11426] open(".", O_RDONLY [pid 11424] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 11428] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11427] <... setpgid resumed>) = 0 [pid 11426] <... open resumed>) = 3 [pid 11424] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11428] open(".", O_RDONLY [pid 11427] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11426] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11425] +++ killed by SIGIO +++ [pid 11421] +++ killed by SIGIO +++ [pid 5051] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./523/cgroup.net" [pid 11428] <... open resumed>) = 3 [pid 11427] <... symlink resumed>) = 0 [pid 11426] <... futex resumed>) = 1 [pid 11423] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1054, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... unlink resumed>) = 0 [pid 11427] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11426] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11423] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 11426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11428] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11426] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11423] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 11428] <... futex resumed>) = 1 [pid 11427] <... symlink resumed>) = 0 [pid 11426] <... fcntl resumed>) = 0 [pid 11424] <... futex resumed>) = 0 [pid 11423] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./540/cgroup.net" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11428] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11427] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11426] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11424] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... unlink resumed>) = 0 [pid 5046] close(3 [pid 11428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11427] <... symlink resumed>) = 0 [pid 11426] <... futex resumed>) = 0 [pid 11424] <... futex resumed>) = 0 [pid 11423] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5046] <... close resumed>) = 0 [pid 11428] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11426] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11424] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11423] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./523" [pid 11428] <... fcntl resumed>) = 0 [pid 11427] <... openat resumed>) = 3 [pid 11426] <... openat resumed>) = 4 [pid 11423] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 11427] write(3, "1000", 4 [pid 11426] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11427] <... write resumed>) = 4 [pid 11426] <... futex resumed>) = 0 [pid 5051] rmdir("./540" [pid 11428] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11427] close(3 [pid 11426] +++ killed by SIGIO +++ [pid 5047] <... openat resumed>) = 3 [pid 11428] <... futex resumed>) = 1 [pid 11427] <... close resumed>) = 0 [pid 11424] <... futex resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5046] mkdir("./524", 0777 [pid 11428] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11427] symlink("/dev/binderfs", "./binderfs" [pid 11424] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11424] <... futex resumed>) = 0 [pid 5051] mkdir("./541", 0777 [pid 5047] getdents64(3, [pid 11428] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11427] <... symlink resumed>) = 0 [pid 11424] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11428] <... openat resumed>) = 4 [pid 11427] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11427] <... futex resumed>) = 0 [pid 11423] +++ killed by SIGIO +++ [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11429 attached [pid 11427] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11427] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11428] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11424] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) ./strace-static-x86_64: Process 11430 attached [pid 11429] set_robust_list(0x555556ac56a0, 24 [pid 11427] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1083, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11429] <... set_robust_list resumed>) = 0 [pid 11427] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5047] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 11427] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11427] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] unlink("./526/cgroup.cpu" [pid 11429] chdir("./524" [pid 11427] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11430] set_robust_list(0x555556ac56a0, 24 [pid 11429] <... chdir resumed>) = 0 [pid 11428] +++ killed by SIGIO +++ [pid 11427] <... mprotect resumed>) = 0 [pid 11424] +++ killed by SIGIO +++ [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1084 [pid 5050] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11430] <... set_robust_list resumed>) = 0 [pid 11429] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11429] <... prctl resumed>) = 0 [pid 11427] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11430] chdir("./541" [pid 11427] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] newfstatat(AT_FDCWD, "./526/binderfs", [pid 11430] <... chdir resumed>) = 0 [pid 11429] setpgid(0, 0 [pid 11427] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11429] <... setpgid resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11431 attached [pid 11430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... openat resumed>) = 3 [pid 5047] unlink("./526/binderfs" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1050 [pid 11429] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11431] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11430] <... prctl resumed>) = 0 [pid 11427] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 5050] newfstatat(3, "", [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1028, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11431] <... rseq resumed>) = 0 [pid 11430] setpgid(0, 0 [pid 11427] rt_sigprocmask(SIG_SETMASK, [], [pid 11431] set_robust_list(0x7f504ff7f9a0, 24 [pid 11430] <... setpgid resumed>) = 0 [pid 11427] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11431] <... set_robust_list resumed>) = 0 [pid 11427] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11430] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11429] <... symlink resumed>) = 0 [pid 11431] rt_sigprocmask(SIG_SETMASK, [], [pid 11427] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11431] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11430] <... symlink resumed>) = 0 [pid 11429] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11427] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] newfstatat(AT_FDCWD, "./526/cgroup", [pid 11431] open(".", O_RDONLY [pid 11430] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11429] <... symlink resumed>) = 0 [pid 5050] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11431] <... open resumed>) = 3 [pid 11431] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11430] <... symlink resumed>) = 0 [pid 11429] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./526/cgroup" [pid 11431] <... futex resumed>) = 1 [pid 11430] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11427] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./513", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11431] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11430] <... symlink resumed>) = 0 [pid 11429] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11427] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11431] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./513", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11431] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11427] <... futex resumed>) = 0 [pid 5050] unlink("./540/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11431] <... fcntl resumed>) = 0 [pid 11430] <... openat resumed>) = 3 [pid 5045] <... openat resumed>) = 3 [pid 11431] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11427] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", [pid 11431] <... futex resumed>) = 0 [pid 11429] <... openat resumed>) = 3 [pid 11427] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11430] write(3, "1000", 4 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 11431] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11430] <... write resumed>) = 4 [pid 11429] write(3, "1000", 4 [pid 11427] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11431] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11430] close(3 [pid 11429] <... write resumed>) = 4 [pid 11427] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11431] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11430] <... close resumed>) = 0 [pid 11429] close(3 [pid 11427] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11430] symlink("/dev/binderfs", "./binderfs" [pid 5045] getdents64(3, [pid 11431] <... openat resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./540/binderfs", [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11431] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11430] <... symlink resumed>) = 0 [pid 11429] <... close resumed>) = 0 [pid 11427] <... futex resumed>) = ? [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./513/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11430] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11429] symlink("/dev/binderfs", "./binderfs" [pid 5050] unlink("./540/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11431] +++ killed by SIGIO +++ [pid 5045] newfstatat(AT_FDCWD, "./513/cgroup.cpu", [pid 11429] <... symlink resumed>) = 0 [pid 11430] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./526/cgroup.net", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11430] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11429] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./513/cgroup.cpu" [pid 11430] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11429] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./526/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 11430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11429] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./540/cgroup", [pid 11430] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./513/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11430] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11429] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] unlink("./540/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11430] <... mprotect resumed>) = 0 [pid 11429] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11430] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11429] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./513/binderfs", [pid 11429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11430] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11429] <... mmap resumed>) = 0x7f504ff5f000 [pid 11427] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 11429] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1060, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11432 attached [pid 11429] <... mprotect resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", [pid 5047] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11432] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11430] <... clone3 resumed> => {parent_tid=[1085]}, 88) = 1085 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./513/binderfs" [pid 11432] <... rseq resumed>) = 0 [pid 11430] rt_sigprocmask(SIG_SETMASK, [], [pid 11429] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 5047] rmdir("./526" [pid 5045] <... unlink resumed>) = 0 [pid 11432] set_robust_list(0x7f504ff7f9a0, 24 [pid 11430] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11429] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11432] <... set_robust_list resumed>) = 0 [pid 11430] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11429] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... rmdir resumed>) = 0 [pid 5045] umount2("./513/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11433 attached [pid 11432] rt_sigprocmask(SIG_SETMASK, [], [pid 11430] <... futex resumed>) = 0 [pid 5047] mkdir("./527", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11433] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11432] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11430] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11429] <... clone3 resumed> => {parent_tid=[1051]}, 88) = 1051 [pid 5049] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 11433] <... rseq resumed>) = 0 [pid 11432] open(".", O_RDONLY [pid 11429] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] newfstatat(AT_FDCWD, "./513/cgroup", [pid 11433] set_robust_list(0x7f504ff7f9a0, 24 [pid 11432] <... open resumed>) = 3 [pid 11429] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11433] <... set_robust_list resumed>) = 0 [pid 11432] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11429] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./540/cgroup.net" [pid 11432] <... futex resumed>) = 1 [pid 11430] <... futex resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5045] unlink("./513/cgroup" [pid 11433] rt_sigprocmask(SIG_SETMASK, [], [pid 11432] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11430] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11429] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11433] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11430] <... futex resumed>) = 0 [pid 11429] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11434 attached [pid 11433] open(".", O_RDONLY [pid 11432] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11430] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 5049] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11434] set_robust_list(0x555556ac56a0, 24 [pid 11433] <... open resumed>) = 3 [pid 11432] <... fcntl resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1056 [pid 5045] umount2("./513/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11434] <... set_robust_list resumed>) = 0 [pid 11433] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11432] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] close(3 [pid 5049] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11434] chdir("./527" [pid 11433] <... futex resumed>) = 1 [pid 11432] <... futex resumed>) = 1 [pid 11430] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./513/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11434] <... chdir resumed>) = 0 [pid 11433] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11432] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11430] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11429] <... futex resumed>) = 0 [pid 5050] rmdir("./540" [pid 5049] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11434] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11430] <... futex resumed>) = 0 [pid 11429] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./513/blkio.bfq.io_wait_time_recursive" [pid 11434] <... prctl resumed>) = 0 [pid 11432] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11430] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11433] <... futex resumed>) = 0 [pid 11429] <... futex resumed>) = 1 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11434] setpgid(0, 0 [pid 5045] <... unlink resumed>) = 0 [pid 11434] <... setpgid resumed>) = 0 [pid 11433] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11432] <... openat resumed>) = 4 [pid 11429] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] mkdir("./541", 0777 [pid 5049] unlink("./529/cgroup.cpu" [pid 11433] <... fcntl resumed>) = 0 [pid 11432] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] umount2("./513/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11433] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11430] <... futex resumed>) = ? [pid 11433] <... futex resumed>) = 1 [pid 11429] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11433] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11429] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./513/cgroup.net", [pid 11433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11429] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11433] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11429] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./513/cgroup.net" [pid 11434] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11433] <... openat resumed>) = 4 [pid 11429] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 5049] newfstatat(AT_FDCWD, "./529/binderfs", ./strace-static-x86_64: Process 11435 attached [pid 5045] rmdir("./513") = 0 [pid 11435] set_robust_list(0x555556ac56a0, 24 [pid 11434] <... symlink resumed>) = 0 [pid 11433] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11429] restart_syscall(<... resuming interrupted futex ...> [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11434] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11432] +++ killed by SIGIO +++ [pid 11430] +++ killed by SIGIO +++ [pid 11429] <... restart_syscall resumed>) = ? [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1085 [pid 5049] unlink("./529/binderfs" [pid 11435] <... set_robust_list resumed>) = 0 [pid 11434] <... symlink resumed>) = 0 [pid 11433] +++ killed by SIGIO +++ [pid 11429] +++ killed by SIGIO +++ [pid 5045] mkdir("./514", 0777 [pid 11435] chdir("./541" [pid 5049] <... unlink resumed>) = 0 [pid 11435] <... chdir resumed>) = 0 [pid 11434] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1084, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1050, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... mkdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./529/cgroup", [pid 11435] <... prctl resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5051] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... restart_syscall resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11435] setpgid(0, 0 [pid 11434] <... symlink resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./529/cgroup" [pid 11435] <... setpgid resumed>) = 0 [pid 11435] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11436 attached [pid 11435] <... symlink resumed>) = 0 [pid 11434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11435] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11435] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11436] set_robust_list(0x555556ac56a0, 24 [pid 5049] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1030 [pid 11436] <... set_robust_list resumed>) = 0 [pid 11435] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11436] chdir("./514" [pid 11435] <... symlink resumed>) = 0 [pid 11434] <... openat resumed>) = 3 [pid 5049] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 11435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 [pid 11435] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", [pid 5046] newfstatat(3, "", [pid 11436] <... chdir resumed>) = 0 [pid 5049] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11436] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11435] write(3, "1000", 4 [pid 11434] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11436] <... prctl resumed>) = 0 [pid 11435] <... write resumed>) = 4 [pid 11434] <... write resumed>) = 4 [pid 5051] getdents64(3, [pid 5046] getdents64(3, [pid 11436] setpgid(0, 0 [pid 11435] close(3 [pid 5049] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 11436] <... setpgid resumed>) = 0 [pid 11435] <... close resumed>) = 0 [pid 11434] close(3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11435] symlink("/dev/binderfs", "./binderfs" [pid 11434] <... close resumed>) = 0 [pid 5049] unlink("./529/cgroup.net" [pid 11436] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11435] <... symlink resumed>) = 0 [pid 11434] symlink("/dev/binderfs", "./binderfs" [pid 5051] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11436] <... symlink resumed>) = 0 [pid 11435] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11435] <... futex resumed>) = 0 [pid 11435] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11435] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] getdents64(3, [pid 11435] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11434] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11435] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] close(3 [pid 11436] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11435] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./524/cgroup.cpu", [pid 11435] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./529" [pid 11436] <... symlink resumed>) = 0 [pid 11435] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./541/cgroup.cpu" [pid 5049] <... rmdir resumed>) = 0 [pid 11434] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11435] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11437 attached [pid 11436] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11434] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11437] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11435] <... clone3 resumed> => {parent_tid=[1086]}, 88) = 1086 [pid 11434] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./530", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11437] <... rseq resumed>) = 0 [pid 11436] <... symlink resumed>) = 0 [pid 11435] rt_sigprocmask(SIG_SETMASK, [], [pid 11434] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11437] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11435] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./524/cgroup.cpu" [pid 11437] rt_sigprocmask(SIG_SETMASK, [], [pid 11435] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11437] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11436] <... openat resumed>) = 3 [pid 11435] <... futex resumed>) = 0 [pid 11434] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./541/binderfs", [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11437] open(".", O_RDONLY [pid 11434] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11437] <... open resumed>) = 3 [pid 11436] write(3, "1000", 4 [pid 11435] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11437] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11436] <... write resumed>) = 4 [pid 11435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11434] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./541/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11437] <... futex resumed>) = 0 [pid 11436] close(3 [pid 11435] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11434] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 11437] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11436] <... close resumed>) = 0 [pid 11435] <... futex resumed>) = 0 [pid 11434] <... mprotect resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./524/binderfs", [pid 11437] <... fcntl resumed>) = 0 [pid 11436] symlink("/dev/binderfs", "./binderfs" [pid 11435] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11434] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11438 attached [pid 11437] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11436] <... symlink resumed>) = 0 [pid 11435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11437] <... futex resumed>) = 0 [pid 11435] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11438] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1062 [pid 11437] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11435] <... futex resumed>) = 0 [pid 5046] unlink("./524/binderfs" [pid 11438] <... set_robust_list resumed>) = 0 [pid 11437] <... openat resumed>) = 4 [pid 11436] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11434] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11436] <... futex resumed>) = 0 [pid 11434] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./541/cgroup", [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11439 attached [pid 11438] chdir("./530" [pid 11437] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11436] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11435] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11439] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11438] <... chdir resumed>) = 0 [pid 11437] <... futex resumed>) = ? [pid 11436] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11434] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 [pid 5051] unlink("./541/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11439] <... rseq resumed>) = 0 [pid 11438] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11437] +++ killed by SIGIO +++ [pid 11436] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11434] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 11436] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11434] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11434] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11436] <... mmap resumed>) = 0x7f504ff5f000 [pid 11434] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11436] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11434] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 11436] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11438] <... prctl resumed>) = 0 [pid 11436] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./524/cgroup", [pid 11439] set_robust_list(0x7f504ff7f9a0, 24 [pid 11438] setpgid(0, 0 [pid 11439] <... set_robust_list resumed>) = 0 [pid 11438] <... setpgid resumed>) = 0 [pid 5051] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11436] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11436] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 11439] rt_sigprocmask(SIG_SETMASK, [], [pid 11438] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] unlink("./524/cgroup"./strace-static-x86_64: Process 11440 attached [pid 11439] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11436] <... clone3 resumed> => {parent_tid=[1031]}, 88) = 1031 [pid 5051] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11440] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11439] open(".", O_RDONLY [pid 11436] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11440] <... rseq resumed>) = 0 [pid 11436] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 11440] set_robust_list(0x7f504ff7f9a0, 24 [pid 11439] <... open resumed>) = 3 [pid 11438] <... symlink resumed>) = 0 [pid 11440] <... set_robust_list resumed>) = 0 [pid 11436] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11440] rt_sigprocmask(SIG_SETMASK, [], [pid 11436] <... futex resumed>) = 0 [pid 11440] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11439] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11438] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11436] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./541/cgroup.net" [pid 5046] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11435] +++ killed by SIGIO +++ [pid 11440] open(".", O_RDONLY [pid 11439] <... futex resumed>) = 1 [pid 11438] <... symlink resumed>) = 0 [pid 11434] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1085, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11440] <... open resumed>) = 3 [pid 11439] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11434] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 11440] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11439] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11438] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11434] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11439] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11438] <... symlink resumed>) = 0 [pid 5046] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 11440] <... futex resumed>) = 1 [pid 11439] <... fcntl resumed>) = 0 [pid 11438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11436] <... futex resumed>) = 0 [pid 11434] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11440] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11439] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11438] <... openat resumed>) = 3 [pid 11436] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11440] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11439] <... futex resumed>) = 0 [pid 11436] <... futex resumed>) = 0 [pid 11434] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11440] <... fcntl resumed>) = 0 [pid 11439] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11438] write(3, "1000", 4 [pid 11436] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11434] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... close resumed>) = 0 [pid 5046] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11440] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11439] <... openat resumed>) = 4 [pid 11438] <... write resumed>) = 4 [pid 11436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11434] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11440] <... futex resumed>) = 0 [pid 11438] close(3 [pid 11436] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./541" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11440] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11438] <... close resumed>) = 0 [pid 11436] <... futex resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 11438] symlink("/dev/binderfs", "./binderfs" [pid 11440] <... openat resumed>) = 4 [pid 11436] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] mkdir("./542", 0777 [pid 11438] <... symlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11438] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] unlink("./524/cgroup.net") = 0 [pid 11438] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 11440] +++ killed by SIGIO +++ [pid 11439] +++ killed by SIGIO +++ [pid 11438] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11434] +++ killed by SIGIO +++ [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11438] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11438] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 5046] close(3 [pid 11438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... close resumed>) = 0 [pid 11438] <... mmap resumed>) = 0x7f504ff5f000 [pid 11438] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./541/cgroup.cpu" [pid 5046] rmdir("./524" [pid 11438] <... mprotect resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5050] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11442 attached ./strace-static-x86_64: Process 11441 attached [pid 5050] newfstatat(AT_FDCWD, "./541/binderfs", [pid 5046] mkdir("./525", 0777 [pid 11442] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11441] set_robust_list(0x555556ac56a0, 24 [pid 11438] <... clone3 resumed> => {parent_tid=[1063]}, 88) = 1063 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1056, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... mkdir resumed>) = 0 [pid 11442] <... rseq resumed>) = 0 [pid 11441] <... set_robust_list resumed>) = 0 [pid 11438] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./541/binderfs" [pid 11436] +++ killed by SIGIO +++ [pid 11442] set_robust_list(0x7f504ff7f9a0, 24 [pid 11438] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1086 [pid 5050] <... unlink resumed>) = 0 [pid 11442] <... set_robust_list resumed>) = 0 [pid 11441] chdir("./542" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1030, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11442] rt_sigprocmask(SIG_SETMASK, [], [pid 11441] <... chdir resumed>) = 0 [pid 11438] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11442] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11441] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11438] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... restart_syscall resumed>) = 0 [pid 11442] open(".", O_RDONLY [pid 11438] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11442] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./541/cgroup", [pid 5047] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11442] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11441] <... prctl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11442] <... futex resumed>) = 1 [pid 11438] <... futex resumed>) = 0 [pid 5050] unlink("./541/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./514", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11442] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11441] setpgid(0, 0 [pid 11438] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11443 attached [pid 11442] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11441] <... setpgid resumed>) = 0 [pid 11438] <... futex resumed>) = 0 [pid 11442] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11441] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11438] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... openat resumed>) = 3 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1052 [pid 5045] openat(AT_FDCWD, "./514", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11443] set_robust_list(0x555556ac56a0, 24 [pid 11442] <... fcntl resumed>) = 0 [pid 11441] <... symlink resumed>) = 0 [pid 5050] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5045] <... openat resumed>) = 3 [pid 11443] <... set_robust_list resumed>) = 0 [pid 11442] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11443] chdir("./525" [pid 11442] <... futex resumed>) = 1 [pid 11438] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(3, "", [pid 11443] <... chdir resumed>) = 0 [pid 11442] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11441] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11438] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 11443] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11442] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11438] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11443] <... prctl resumed>) = 0 [pid 11442] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11441] <... symlink resumed>) = 0 [pid 11438] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 11443] setpgid(0, 0 [pid 11442] <... openat resumed>) = 4 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] getdents64(3, [pid 11443] <... setpgid resumed>) = 0 [pid 11442] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11441] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11438] <... futex resumed>) = -1 (errno 18446744073709551528) [pid 5050] <... unlink resumed>) = 0 [pid 11443] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11441] <... symlink resumed>) = 0 [pid 5050] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./514/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11441] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 11441] write(3, "1000", 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11441] <... write resumed>) = 4 [pid 5050] unlink("./541/cgroup.net" [pid 5047] unlink("./527/cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./514/cgroup.cpu", [pid 11443] <... symlink resumed>) = 0 [pid 11441] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 11443] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11442] +++ killed by SIGIO +++ [pid 11441] <... close resumed>) = 0 [pid 11438] +++ killed by SIGIO +++ [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11441] symlink("/dev/binderfs", "./binderfs" [pid 5050] close(3) = 0 [pid 5050] rmdir("./541" [pid 11443] <... symlink resumed>) = 0 [pid 11441] <... symlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1062, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./514/cgroup.cpu" [pid 5049] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] mkdir("./542", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11441] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./527/binderfs", [pid 11443] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11441] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./514/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11443] <... symlink resumed>) = 0 [pid 11441] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(3, "", [pid 5047] unlink("./527/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11444 attached [pid 11443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11441] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./514/binderfs", [pid 11444] set_robust_list(0x555556ac56a0, 24 [pid 11443] <... openat resumed>) = 3 [pid 11441] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1087 [pid 11441] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11444] <... set_robust_list resumed>) = 0 [pid 11443] write(3, "1000", 4 [pid 11441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./514/binderfs" [pid 11444] chdir("./542" [pid 11443] <... write resumed>) = 4 [pid 11441] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11444] <... chdir resumed>) = 0 [pid 11443] close(3 [pid 11444] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11443] <... close resumed>) = 0 [pid 11444] <... prctl resumed>) = 0 [pid 11443] symlink("/dev/binderfs", "./binderfs" [pid 11444] setpgid(0, 0 [pid 11443] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11444] <... setpgid resumed>) = 0 [pid 11444] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11441] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./527/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 11443] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11441] <... mprotect resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11444] <... symlink resumed>) = 0 [pid 5045] umount2("./514/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11444] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11443] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./527/cgroup" [pid 11444] <... symlink resumed>) = 0 [pid 11443] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] unlink("./530/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11443] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11441] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./514/cgroup", [pid 11444] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11443] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... unlink resumed>) = 0 [pid 11444] <... symlink resumed>) = 0 [pid 11443] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11441] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./514/cgroup" [pid 11441] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 11445 attached [pid 11444] <... openat resumed>) = 3 [pid 11443] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./530/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 11445] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11444] write(3, "1000", 4 [pid 11443] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11441] <... clone3 resumed> => {parent_tid=[1087]}, 88) = 1087 [pid 11445] <... rseq resumed>) = 0 [pid 11444] <... write resumed>) = 4 [pid 11443] <... mprotect resumed>) = 0 [pid 11441] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./514/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11445] set_robust_list(0x7f504ff7f9a0, 24 [pid 11444] close(3 [pid 11443] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11441] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11444] <... close resumed>) = 0 [pid 11443] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11445] <... set_robust_list resumed>) = 0 [pid 11444] symlink("/dev/binderfs", "./binderfs" [pid 11441] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./530/binderfs" [pid 5047] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11445] rt_sigprocmask(SIG_SETMASK, [], [pid 11443] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11441] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11446 attached [pid 11445] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11444] <... symlink resumed>) = 0 [pid 11441] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./514/blkio.bfq.io_wait_time_recursive", [pid 11446] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11445] open(".", O_RDONLY [pid 11444] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11443] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 11446] <... rseq resumed>) = 0 [pid 11444] <... futex resumed>) = 0 [pid 11443] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11446] set_robust_list(0x7f504ff7f9a0, 24 [pid 11445] <... open resumed>) = 3 [pid 11444] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11443] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11446] <... set_robust_list resumed>) = 0 [pid 11444] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11443] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11446] rt_sigprocmask(SIG_SETMASK, [], [pid 11445] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11443] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./514/blkio.bfq.io_wait_time_recursive" [pid 11446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11445] <... futex resumed>) = 1 [pid 11444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11443] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11441] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./530/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 11446] open(".", O_RDONLY [pid 11445] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11441] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11446] <... open resumed>) = 3 [pid 11445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11444] <... mmap resumed>) = 0x7f504ff5f000 [pid 11441] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./514/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11446] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11445] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11444] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11441] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./527/cgroup.net" [pid 11446] <... futex resumed>) = 1 [pid 11445] <... fcntl resumed>) = 0 [pid 11443] <... futex resumed>) = 0 [pid 5049] unlink("./530/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11446] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11444] <... mprotect resumed>) = 0 [pid 11443] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./514/cgroup.net", [pid 11445] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11443] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11445] <... futex resumed>) = 1 [pid 11441] <... futex resumed>) = 0 [pid 5049] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11445] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11441] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./514/cgroup.net" [pid 11445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11441] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 5047] getdents64(3, [pid 11446] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11444] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11443] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11446] <... fcntl resumed>) = 0 [pid 11445] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11444] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11441] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11446] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11447 attached [pid 11446] <... futex resumed>) = 1 [pid 11445] <... openat resumed>) = 4 [pid 11443] <... futex resumed>) = 0 [pid 11447] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11446] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11444] <... clone3 resumed> => {parent_tid=[1088]}, 88) = 1088 [pid 11443] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11447] <... rseq resumed>) = 0 [pid 11446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11444] rt_sigprocmask(SIG_SETMASK, [], [pid 11443] <... futex resumed>) = 0 [pid 11447] set_robust_list(0x7f504ff7f9a0, 24 [pid 11446] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11443] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11447] <... set_robust_list resumed>) = 0 [pid 11445] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11444] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11441] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... unlink resumed>) = 0 [pid 5047] close(3 [pid 5045] getdents64(3, [pid 11447] rt_sigprocmask(SIG_SETMASK, [], [pid 11446] <... openat resumed>) = 4 [pid 11444] <... futex resumed>) = 0 [pid 11443] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] <... close resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11447] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11446] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11444] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11443] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./527" [pid 5045] close(3 [pid 11447] open(".", O_RDONLY) = 3 [pid 5045] <... close resumed>) = 0 [pid 11447] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... rmdir resumed>) = 0 [pid 5045] rmdir("./514" [pid 5049] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 11447] <... futex resumed>) = 1 [pid 11444] <... futex resumed>) = 0 [pid 11447] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11444] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11444] <... futex resumed>) = 0 [pid 11447] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11444] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11447] <... fcntl resumed>) = 0 [pid 11445] +++ killed by SIGIO +++ [pid 11441] +++ killed by SIGIO +++ [pid 11447] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11444] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1086, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11447] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11444] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11444] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] mkdir("./528", 0777 [pid 5045] <... rmdir resumed>) = 0 [pid 11447] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11444] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11447] <... openat resumed>) = 4 [pid 5049] unlink("./530/cgroup.net" [pid 11446] +++ killed by SIGIO +++ [pid 11443] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11444] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... openat resumed>) = 3 [pid 5049] getdents64(3, [pid 5047] <... mkdir resumed>) = 0 [pid 5045] mkdir("./515", 0777 [pid 11447] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11444] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(3, "", [pid 11447] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11447] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5049] close(3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1052, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... mkdir resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11448 attached [pid 11444] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] rmdir("./530" [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5051] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1087, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... restart_syscall resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1032 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./542/cgroup.cpu"./strace-static-x86_64: Process 11449 attached [pid 11449] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11449] chdir("./515" [pid 5051] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11449] <... chdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1058 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11448] set_robust_list(0x555556ac56a0, 24 [pid 11449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11449] setpgid(0, 0) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11449] symlink("/syzcgroup/unified/syz1", "./cgroup") = 0 [pid 11448] <... set_robust_list resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] newfstatat(AT_FDCWD, "./542/binderfs", [pid 5050] <... openat resumed>) = 3 [pid 11448] chdir("./528" [pid 11449] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(3, "", [pid 11448] <... chdir resumed>) = 0 [pid 5051] unlink("./542/binderfs" [pid 5050] newfstatat(3, "", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11449] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, [pid 11449] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11448] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] mkdir("./531", 0777 [pid 11449] <... symlink resumed>) = 0 [pid 11448] <... prctl resumed>) = 0 [pid 5050] getdents64(3, [pid 11449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11448] setpgid(0, 0 [pid 11449] <... openat resumed>) = 3 [pid 11449] write(3, "1000", 4 [pid 5049] <... mkdir resumed>) = 0 [pid 11449] <... write resumed>) = 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11449] close(3) = 0 [pid 11449] symlink("/dev/binderfs", "./binderfs" [pid 11448] <... setpgid resumed>) = 0 [pid 5051] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11449] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11449] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11449] <... futex resumed>) = 0 [pid 11448] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 5051] newfstatat(AT_FDCWD, "./542/cgroup", [pid 11449] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11449] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11448] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./542/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11449] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11448] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5051] unlink("./542/cgroup" [pid 11449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11448] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./525/cgroup.cpu" [pid 11449] <... mmap resumed>) = 0x7f504ff5f000 [pid 11448] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 11449] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11448] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11450 attached [pid 5051] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", [pid 5046] <... unlink resumed>) = 0 [pid 11450] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1064 [pid 11450] <... set_robust_list resumed>) = 0 [pid 11448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] newfstatat(AT_FDCWD, "./542/binderfs", [pid 5046] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11450] chdir("./531" [pid 11449] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11448] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11450] <... chdir resumed>) = 0 [pid 11448] write(3, "1000", 4 [pid 5051] unlink("./542/blkio.bfq.io_wait_time_recursive" [pid 5050] unlink("./542/binderfs" [pid 5046] newfstatat(AT_FDCWD, "./525/binderfs", [pid 11450] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11449] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11448] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11450] <... prctl resumed>) = 0 [pid 11448] close(3 [pid 5051] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11450] setpgid(0, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./525/binderfs" [pid 11450] <... setpgid resumed>) = 0 [pid 11448] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 5050] newfstatat(AT_FDCWD, "./542/cgroup", [pid 11450] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11449] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11451 attached [pid 11448] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11451] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11450] <... symlink resumed>) = 0 [pid 11449] <... clone3 resumed> => {parent_tid=[1033]}, 88) = 1033 [pid 11450] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11448] <... symlink resumed>) = 0 [pid 5051] unlink("./542/cgroup.net" [pid 5050] unlink("./542/cgroup" [pid 11451] <... rseq resumed>) = 0 [pid 5046] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11449] rt_sigprocmask(SIG_SETMASK, [], [pid 11448] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11451] set_robust_list(0x7f504ff7f9a0, 24 [pid 11450] <... symlink resumed>) = 0 [pid 11449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 11448] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./525/cgroup", [pid 11451] <... set_robust_list resumed>) = 0 [pid 11450] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11449] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11448] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11451] rt_sigprocmask(SIG_SETMASK, [], [pid 11448] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11450] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11451] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11449] <... futex resumed>) = 0 [pid 11448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./525/cgroup" [pid 11451] open(".", O_RDONLY [pid 11450] <... openat resumed>) = 3 [pid 11449] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] rmdir("./542" [pid 11451] <... open resumed>) = 3 [pid 11450] write(3, "1000", 4 [pid 11448] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11451] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11450] <... write resumed>) = 4 [pid 11448] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./542/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11451] <... futex resumed>) = 1 [pid 11450] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11449] <... futex resumed>) = 0 [pid 5051] mkdir("./543", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 11451] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11450] <... close resumed>) = 0 [pid 11449] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11448] <... mprotect resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 11451] <... fcntl resumed>) = 0 [pid 11450] symlink("/dev/binderfs", "./binderfs" [pid 11449] <... futex resumed>) = 0 [pid 11448] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11451] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11448] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11451] <... futex resumed>) = 0 [pid 11449] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11450] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./525/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11453 attached ./strace-static-x86_64: Process 11452 attached [pid 11451] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11450] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11453] set_robust_list(0x555556ac56a0, 24 [pid 11450] <... futex resumed>) = 0 [pid 11449] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11450] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... unlink resumed>) = 0 [pid 11453] <... set_robust_list resumed>) = 0 [pid 11450] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11448] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 5050] unlink("./542/cgroup.net" [pid 5046] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11453] chdir("./543" [pid 11452] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11451] <... futex resumed>) = 0 [pid 11450] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11449] <... futex resumed>) = 1 [pid 11448] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11453] <... chdir resumed>) = 0 [pid 11452] <... rseq resumed>) = 0 [pid 11451] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11450] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11449] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1088 [pid 5050] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 11453] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11452] set_robust_list(0x7f504ff7f9a0, 24 [pid 11450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11453] <... prctl resumed>) = 0 [pid 11452] <... set_robust_list resumed>) = 0 [pid 11451] <... openat resumed>) = 4 [pid 11448] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11453] setpgid(0, 0 [pid 11452] rt_sigprocmask(SIG_SETMASK, [], [pid 11451] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11450] <... mmap resumed>) = 0x7f504ff5f000 [pid 11448] <... futex resumed>) = 0 [pid 5050] close(3 [pid 5046] unlink("./525/cgroup.net" [pid 11453] <... setpgid resumed>) = 0 [pid 11452] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11450] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11449] <... futex resumed>) = ? [pid 11448] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... close resumed>) = 0 [pid 11451] +++ killed by SIGIO +++ [pid 5046] <... unlink resumed>) = 0 [pid 11452] open(".", O_RDONLY [pid 11450] <... mprotect resumed>) = 0 [pid 5050] rmdir("./542" [pid 5046] getdents64(3, [pid 11450] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11452] <... open resumed>) = 3 [pid 5050] <... rmdir resumed>) = 0 [pid 11453] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11452] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11450] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] mkdir("./543", 0777 [pid 11452] <... futex resumed>) = 1 [pid 11450] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11448] <... futex resumed>) = 0 [pid 5046] close(3 [pid 11453] <... symlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 ./strace-static-x86_64: Process 11454 attached [pid 11452] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11448] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11454] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11450] <... clone3 resumed> => {parent_tid=[1065]}, 88) = 1065 [pid 11448] <... futex resumed>) = 0 [pid 5046] rmdir("./525" [pid 11448] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11452] <... fcntl resumed>) = 0 [pid 11454] <... rseq resumed>) = 0 [pid 11453] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11452] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11450] rt_sigprocmask(SIG_SETMASK, [], [pid 11454] set_robust_list(0x7f504ff7f9a0, 24 [pid 11453] <... symlink resumed>) = 0 [pid 11452] <... futex resumed>) = 1 [pid 11450] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11449] +++ killed by SIGIO +++ [pid 11448] <... futex resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... rmdir resumed>) = 0 [pid 11454] <... set_robust_list resumed>) = 0 [pid 11452] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11450] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11448] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11454] rt_sigprocmask(SIG_SETMASK, [], [pid 11450] <... futex resumed>) = 0 [pid 11454] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11450] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11454] open(".", O_RDONLY [pid 11453] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11454] <... open resumed>) = 3 [pid 11453] <... symlink resumed>) = 0 [pid 11452] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11448] <... futex resumed>) = 0 [pid 5046] mkdir("./526", 0777 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1032, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11455 attached [pid 11454] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11448] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11454] <... futex resumed>) = 1 [pid 11450] <... futex resumed>) = 0 [pid 11455] set_robust_list(0x555556ac56a0, 24 [pid 11454] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11453] <... openat resumed>) = 3 [pid 11452] <... openat resumed>) = 4 [pid 11450] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11455] <... set_robust_list resumed>) = 0 [pid 11454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1089 [pid 11454] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11452] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11450] <... futex resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11455] chdir("./543" [pid 11450] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11453] write(3, "1000", 4 [pid 5045] umount2("./515", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11453] <... write resumed>) = 4 [pid 11453] close(3) = 0 [pid 11453] symlink("/dev/binderfs", "./binderfs" [pid 11455] <... chdir resumed>) = 0 [pid 11453] <... symlink resumed>) = 0 [pid 11454] <... fcntl resumed>) = 0 [pid 11452] +++ killed by SIGIO +++ [pid 11448] <... futex resumed>) = ? [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] openat(AT_FDCWD, "./515", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11454] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11453] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... openat resumed>) = 3 [pid 11453] <... futex resumed>) = 0 [pid 11454] <... futex resumed>) = 1 [pid 11453] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11450] <... futex resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11455] <... prctl resumed>) = 0 [pid 11454] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11453] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11450] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11455] setpgid(0, 0 [pid 11454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11453] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11450] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11456 attached [pid 11455] <... setpgid resumed>) = 0 [pid 11454] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11453] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11450] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1054 [pid 5045] getdents64(3, [pid 11453] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11454] <... openat resumed>) = 4 [pid 11453] <... mmap resumed>) = 0x7f504ff5f000 [pid 11450] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11456] set_robust_list(0x555556ac56a0, 24 [pid 11455] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11454] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11453] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11450] ???( [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11456] <... set_robust_list resumed>) = 0 [pid 11455] <... symlink resumed>) = 0 [pid 11450] <... ??? resumed>) = ? [pid 5045] umount2("./515/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11453] <... mprotect resumed>) = 0 [pid 11456] chdir("./526" [pid 11454] +++ killed by SIGIO +++ [pid 11453] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11453] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11457 attached => {parent_tid=[1089]}, 88) = 1089 [pid 11457] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11456] <... chdir resumed>) = 0 [pid 11455] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./515/cgroup.cpu", [pid 11457] <... rseq resumed>) = 0 [pid 11455] <... symlink resumed>) = 0 [pid 11453] rt_sigprocmask(SIG_SETMASK, [], [pid 11448] +++ killed by SIGIO +++ [pid 11456] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11457] set_robust_list(0x7f504ff7f9a0, 24 [pid 11456] <... prctl resumed>) = 0 [pid 11455] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11453] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11450] +++ killed by SIGIO +++ [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1058, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5045] unlink("./515/cgroup.cpu" [pid 11457] <... set_robust_list resumed>) = 0 [pid 11456] setpgid(0, 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1064, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11453] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11456] <... setpgid resumed>) = 0 [pid 11457] rt_sigprocmask(SIG_SETMASK, [], [pid 11455] <... symlink resumed>) = 0 [pid 11453] <... futex resumed>) = 0 [pid 5045] umount2("./515/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11457] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11456] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11453] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11457] open(".", O_RDONLY [pid 11456] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./515/binderfs", [pid 11456] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11457] <... open resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11456] <... symlink resumed>) = 0 [pid 11455] <... openat resumed>) = 3 [pid 5049] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./515/binderfs" [pid 11456] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11455] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11455] <... write resumed>) = 4 [pid 11455] close(3 [pid 5049] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11457] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11457] <... futex resumed>) = 1 [pid 11456] <... symlink resumed>) = 0 [pid 11455] <... close resumed>) = 0 [pid 11453] <... futex resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... openat resumed>) = 3 [pid 11457] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11455] symlink("/dev/binderfs", "./binderfs" [pid 11453] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 5047] newfstatat(3, "", [pid 5045] umount2("./515/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11456] <... openat resumed>) = 3 [pid 11455] <... symlink resumed>) = 0 [pid 11453] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11457] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11456] write(3, "1000", 4 [pid 11455] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11453] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11457] <... fcntl resumed>) = 0 [pid 11456] <... write resumed>) = 4 [pid 11455] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./515/cgroup", [pid 11457] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11456] close(3 [pid 11455] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11456] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11455] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11457] <... futex resumed>) = 1 [pid 11457] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11456] symlink("/dev/binderfs", "./binderfs" [pid 11455] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11453] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./515/cgroup" [pid 11456] <... symlink resumed>) = 0 [pid 11455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11453] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11457] <... futex resumed>) = 0 [pid 11455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11453] <... futex resumed>) = 1 [pid 5049] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 5045] <... unlink resumed>) = 0 [pid 11457] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11456] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11455] <... mmap resumed>) = 0x7f504ff5f000 [pid 11453] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11456] <... futex resumed>) = 0 [pid 11456] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11457] <... openat resumed>) = 4 [pid 11456] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11455] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./515/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11455] <... mprotect resumed>) = 0 [pid 5049] unlink("./531/cgroup.cpu" [pid 11456] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11455] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11457] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11456] <... mmap resumed>) = 0x7f504ff5f000 [pid 11453] <... futex resumed>) = 139982915629056 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11456] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11455] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./515/blkio.bfq.io_wait_time_recursive", [pid 11456] <... mprotect resumed>) = 0 [pid 11455] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./528/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11458 attached [pid 11456] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./515/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11458] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11456] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11455] <... clone3 resumed> => {parent_tid=[1090]}, 88) = 1090 [pid 11456] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11458] <... rseq resumed>) = 0 [pid 11455] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11459 attached [pid 11458] set_robust_list(0x7f504ff7f9a0, 24 [pid 11456] <... clone3 resumed> => {parent_tid=[1055]}, 88) = 1055 [pid 11455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11459] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11458] <... set_robust_list resumed>) = 0 [pid 11457] +++ killed by SIGIO +++ [pid 11456] rt_sigprocmask(SIG_SETMASK, [], [pid 11455] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11453] +++ killed by SIGIO +++ [pid 5049] newfstatat(AT_FDCWD, "./531/binderfs", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./515/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11459] <... rseq resumed>) = 0 [pid 11458] rt_sigprocmask(SIG_SETMASK, [], [pid 11456] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11455] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./528/binderfs", [pid 11459] set_robust_list(0x7f504ff7f9a0, 24 [pid 11458] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11456] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11455] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1088, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] unlink("./531/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11459] <... set_robust_list resumed>) = 0 [pid 11458] open(".", O_RDONLY [pid 11456] <... futex resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5045] newfstatat(AT_FDCWD, "./515/cgroup.net", [pid 11459] rt_sigprocmask(SIG_SETMASK, [], [pid 11458] <... open resumed>) = 3 [pid 11456] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... restart_syscall resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./528/binderfs" [pid 11459] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11458] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11459] open(".", O_RDONLY [pid 5045] unlink("./515/cgroup.net" [pid 11458] <... futex resumed>) = 1 [pid 11459] <... open resumed>) = 3 [pid 11458] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11455] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11459] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11459] <... futex resumed>) = 1 [pid 11455] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11456] <... futex resumed>) = 0 [pid 5051] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11459] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] getdents64(3, [pid 11459] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11456] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11459] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11458] <... futex resumed>) = 0 [pid 11456] <... futex resumed>) = 0 [pid 11455] <... futex resumed>) = 1 [pid 5051] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11459] <... fcntl resumed>) = 0 [pid 11458] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11456] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11455] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11459] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(3, "", [pid 11459] <... futex resumed>) = 0 [pid 11456] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] close(3 [pid 11459] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11456] <... futex resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11459] <... openat resumed>) = 4 [pid 5051] getdents64(3, [pid 5045] rmdir("./515" [pid 11459] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11458] <... fcntl resumed>) = 0 [pid 11456] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(AT_FDCWD, "./531/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./528/cgroup", [pid 5045] <... rmdir resumed>) = 0 [pid 11459] <... futex resumed>) = ? [pid 11458] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11459] +++ killed by SIGIO +++ [pid 11458] <... futex resumed>) = 1 [pid 11455] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./531/cgroup" [pid 5047] unlink("./528/cgroup" [pid 5045] mkdir("./516", 0777 [pid 11458] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11455] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 11458] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11455] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11458] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11455] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11458] <... openat resumed>) = 4 [pid 5051] unlink("./543/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11455] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11458] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11456] +++ killed by SIGIO +++ [pid 11455] syscall_0xfffffffffffffdfc(0x7ffee211ec01, 0x7ffee211ec20, 0x7ffee211eb90, 0x100, 0, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1054, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./543/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./543/binderfs") = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./528/cgroup.net", [pid 5049] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 5047] unlink("./528/cgroup.net" [pid 5046] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./543/cgroup", [pid 5049] unlink("./531/cgroup.net" [pid 5046] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] unlink("./543/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5051] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11460 attached [pid 11458] +++ killed by SIGIO +++ [pid 11455] +++ killed by SIGIO +++ [pid 5051] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 5046] getdents64(3, [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1034 [pid 11460] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... close resumed>) = 0 [pid 5049] close(3 [pid 5046] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11460] <... set_robust_list resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", [pid 5049] <... close resumed>) = 0 [pid 5047] rmdir("./528" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11460] chdir("./516" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11460] <... chdir resumed>) = 0 [pid 5051] unlink("./543/blkio.bfq.io_wait_time_recursive" [pid 11460] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... unlink resumed>) = 0 [pid 11460] <... prctl resumed>) = 0 [pid 11460] setpgid(0, 0) = 0 [pid 11460] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./543/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11460] <... symlink resumed>) = 0 [pid 5051] unlink("./543/cgroup.net") = 0 [pid 5051] getdents64(3, [pid 11460] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11460] <... symlink resumed>) = 0 [pid 5051] close(3) = 0 [pid 5051] rmdir("./543" [pid 11460] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] <... rmdir resumed>) = 0 [pid 11460] <... symlink resumed>) = 0 [pid 5051] mkdir("./544", 0777 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1089, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 11460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... rmdir resumed>) = 0 [pid 5049] rmdir("./531" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11460] <... openat resumed>) = 3 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] unlink("./526/cgroup.cpu" [pid 5049] <... rmdir resumed>) = 0 [pid 5047] mkdir("./529", 0777 [pid 5050] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11460] write(3, "1000", 4) = 4 [pid 11460] close(3 [pid 5050] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5046] newfstatat(AT_FDCWD, "./526/binderfs", ./strace-static-x86_64: Process 11461 attached [pid 11460] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] mkdir("./532", 0777 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 11460] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11460] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1090 [pid 11460] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11460] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11460] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11460] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] unlink("./526/binderfs" [pid 11461] set_robust_list(0x555556ac56a0, 24 [pid 11460] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11462 attached [pid 11460] <... clone3 resumed> => {parent_tid=[1035]}, 88) = 1035 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./526/cgroup", [pid 11462] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11460] rt_sigprocmask(SIG_SETMASK, [], [pid 11462] <... rseq resumed>) = 0 [pid 11460] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11462] set_robust_list(0x7f504ff7f9a0, 24 [pid 11460] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11462] <... set_robust_list resumed>) = 0 [pid 11460] <... futex resumed>) = 0 [pid 11462] rt_sigprocmask(SIG_SETMASK, [], [pid 11460] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11462] open(".", O_RDONLY./strace-static-x86_64: Process 11463 attached [pid 11463] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11463] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 11464 attached [pid 11463] chdir("./532" [pid 11461] <... set_robust_list resumed>) = 0 [pid 5050] unlink("./543/cgroup.cpu" [pid 5046] unlink("./526/cgroup" [pid 11464] set_robust_list(0x555556ac56a0, 24 [pid 11463] <... chdir resumed>) = 0 [pid 11461] chdir("./544" [pid 11464] <... set_robust_list resumed>) = 0 [pid 11463] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11462] <... open resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 11464] chdir("./529" [pid 11463] <... prctl resumed>) = 0 [pid 11462] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11461] <... chdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1060 [pid 11463] setpgid(0, 0 [pid 11462] <... futex resumed>) = 1 [pid 11461] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11464] <... chdir resumed>) = 0 [pid 11463] <... setpgid resumed>) = 0 [pid 11462] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11461] <... prctl resumed>) = 0 [pid 11460] <... futex resumed>) = 0 [pid 5046] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11464] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11463] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11461] setpgid(0, 0 [pid 11460] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1066 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11464] <... prctl resumed>) = 0 [pid 11461] <... setpgid resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./543/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", [pid 11464] setpgid(0, 0 [pid 11463] <... symlink resumed>) = 0 [pid 11462] <... futex resumed>) = 0 [pid 11461] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11460] <... futex resumed>) = 1 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11464] <... setpgid resumed>) = 0 [pid 11463] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11462] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11461] <... symlink resumed>) = 0 [pid 11460] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./543/binderfs" [pid 5046] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 11464] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11462] <... fcntl resumed>) = 0 [pid 11464] <... symlink resumed>) = 0 [pid 11463] <... symlink resumed>) = 0 [pid 11462] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11461] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 11464] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11463] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11462] <... futex resumed>) = 1 [pid 11460] <... futex resumed>) = 0 [pid 5050] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11461] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11463] <... symlink resumed>) = 0 [pid 11462] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11461] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11460] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./543/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./543/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./526/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./526/cgroup.net" [pid 11460] <... futex resumed>) = 0 [pid 11463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11462] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11464] <... symlink resumed>) = 0 [pid 11460] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 5050] unlink("./543/blkio.bfq.io_wait_time_recursive" [pid 11462] <... openat resumed>) = 4 [pid 11461] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 11463] <... openat resumed>) = 3 [pid 11464] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11463] write(3, "1000", 4 [pid 11462] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11460] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./526" [pid 11464] <... symlink resumed>) = 0 [pid 11463] <... write resumed>) = 4 [pid 11461] <... openat resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./543/cgroup.net", [pid 5046] <... rmdir resumed>) = 0 [pid 11464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11463] close(3 [pid 11461] write(3, "1000", 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11463] <... close resumed>) = 0 [pid 5050] unlink("./543/cgroup.net" [pid 5046] mkdir("./527", 0777 [pid 11463] symlink("/dev/binderfs", "./binderfs" [pid 11461] <... write resumed>) = 4 [pid 11464] <... openat resumed>) = 3 [pid 11463] <... symlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11464] write(3, "1000", 4 [pid 11461] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11464] <... write resumed>) = 4 [pid 11461] <... close resumed>) = 0 [pid 5050] getdents64(3, [pid 11464] close(3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11464] <... close resumed>) = 0 [pid 11463] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11461] symlink("/dev/binderfs", "./binderfs" [pid 5050] close(3 [pid 11461] <... symlink resumed>) = 0 [pid 11463] <... futex resumed>) = 0 [pid 11463] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11462] +++ killed by SIGIO +++ [pid 11464] symlink("/dev/binderfs", "./binderfs" [pid 11460] +++ killed by SIGIO +++ [pid 5050] <... close resumed>) = 0 [pid 11463] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11461] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11464] <... symlink resumed>) = 0 [pid 11463] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] rmdir("./543" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1034, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11461] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11465 attached [pid 11463] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... rmdir resumed>) = 0 [pid 11464] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1056 [pid 11465] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11464] <... futex resumed>) = 0 [pid 11463] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11461] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] mkdir("./544", 0777 [pid 11465] chdir("./527" [pid 11464] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11463] <... mprotect resumed>) = 0 [pid 11461] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11465] <... chdir resumed>) = 0 [pid 11463] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11461] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11464] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] umount2("./516", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11463] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11461] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11465] <... prctl resumed>) = 0 [pid 11464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11463] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11461] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11465] setpgid(0, 0 [pid 11464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] openat(AT_FDCWD, "./516", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11465] <... setpgid resumed>) = 0 [pid 11464] <... mmap resumed>) = 0x7f504ff5f000 [pid 11463] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 11461] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... openat resumed>) = 3 [pid 11463] rt_sigprocmask(SIG_SETMASK, [], [pid 11461] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11465] symlink("/syzcgroup/unified/syz0", "./cgroup"./strace-static-x86_64: Process 11466 attached [pid 11464] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11463] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11461] <... mprotect resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11463] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11461] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11465] <... symlink resumed>) = 0 [pid 11466] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11465] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11463] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11466] <... rseq resumed>) = 0 [pid 11464] <... mprotect resumed>) = 0 [pid 11463] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11461] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] getdents64(3, [pid 11465] <... symlink resumed>) = 0 [pid 11461] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11467 attached [pid 11465] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11464] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 11468 attached [pid 11467] set_robust_list(0x555556ac56a0, 24 [pid 11461] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 5045] umount2("./516/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11468] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11467] <... set_robust_list resumed>) = 0 [pid 11466] set_robust_list(0x7f504ff7f9a0, 24 [pid 11465] <... symlink resumed>) = 0 [pid 11461] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11468] <... rseq resumed>) = 0 [pid 11466] <... set_robust_list resumed>) = 0 [pid 11465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11464] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11461] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1091 [pid 11468] set_robust_list(0x7f504ff7f9a0, 24 [pid 11467] chdir("./544" [pid 11461] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./516/cgroup.cpu", [pid 11468] <... set_robust_list resumed>) = 0 [pid 11466] rt_sigprocmask(SIG_SETMASK, [], [pid 11465] <... openat resumed>) = 3 [pid 11464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11461] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11469 attached [pid 11468] rt_sigprocmask(SIG_SETMASK, [], [pid 11467] <... chdir resumed>) = 0 [pid 11466] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11465] write(3, "1000", 4 [pid 11461] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11469] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11468] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11466] open(".", O_RDONLY [pid 11465] <... write resumed>) = 4 [pid 5045] unlink("./516/cgroup.cpu" [pid 11469] <... rseq resumed>) = 0 [pid 11468] open(".", O_RDONLY [pid 11467] <... prctl resumed>) = 0 [pid 11466] <... open resumed>) = 3 [pid 11465] close(3 [pid 11464] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 11466] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11465] <... close resumed>) = 0 [pid 11464] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... unlink resumed>) = 0 [pid 11469] set_robust_list(0x7f504ff7f9a0, 24 [pid 11468] <... open resumed>) = 3 [pid 11467] setpgid(0, 0 [pid 11466] <... futex resumed>) = 1 [pid 11465] symlink("/dev/binderfs", "./binderfs" [pid 11463] <... futex resumed>) = 0 [pid 11469] <... set_robust_list resumed>) = 0 [pid 11468] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] <... setpgid resumed>) = 0 [pid 11466] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11465] <... symlink resumed>) = 0 [pid 11464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11463] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./516/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11469] rt_sigprocmask(SIG_SETMASK, [], [pid 11468] <... futex resumed>) = 1 [pid 11466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11461] <... futex resumed>) = 0 [pid 11469] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11468] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11461] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11469] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11461] <... futex resumed>) = 0 [pid 11468] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11461] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11468] <... fcntl resumed>) = 0 [pid 11467] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11466] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11465] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11463] <... futex resumed>) = 0 [pid 11468] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11466] <... fcntl resumed>) = 0 [pid 11465] <... futex resumed>) = 0 [pid 11464] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11463] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11468] <... futex resumed>) = 1 [pid 11467] <... symlink resumed>) = 0 [pid 11466] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11465] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11464] <... futex resumed>) = 1 [pid 11463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11461] <... futex resumed>) = 0 [pid 11469] <... futex resumed>) = 0 [pid 11468] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11467] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11466] <... futex resumed>) = 0 [pid 11465] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11464] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11463] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11461] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./516/binderfs", [pid 11469] open(".", O_RDONLY [pid 11468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11467] <... symlink resumed>) = 0 [pid 11466] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11465] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11463] <... futex resumed>) = 0 [pid 11461] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11469] <... open resumed>) = 3 [pid 11468] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11467] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11466] <... openat resumed>) = 4 [pid 11465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11463] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11461] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11469] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./516/binderfs" [pid 11469] <... futex resumed>) = 1 [pid 11468] <... openat resumed>) = 4 [pid 11467] <... symlink resumed>) = 0 [pid 11465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... unlink resumed>) = 0 [pid 11464] <... futex resumed>) = 0 [pid 11465] <... mmap resumed>) = 0x7f504ff5f000 [pid 11464] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11464] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./516/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11467] <... openat resumed>) = 3 [pid 11465] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] newfstatat(AT_FDCWD, "./516/cgroup", [pid 11465] <... mprotect resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11469] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11465] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11469] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] write(3, "1000", 4 [pid 5045] unlink("./516/cgroup" [pid 11469] <... futex resumed>) = 1 [pid 11468] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11467] <... write resumed>) = 4 [pid 11464] <... futex resumed>) = 0 [pid 11461] <... futex resumed>) = 0 [pid 11469] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11465] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11464] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11469] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11464] <... futex resumed>) = 0 [pid 11469] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11467] close(3 [pid 11466] +++ killed by SIGIO +++ [pid 11465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11464] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11463] +++ killed by SIGIO +++ [pid 5045] <... unlink resumed>) = 0 [pid 11467] <... close resumed>) = 0 ./strace-static-x86_64: Process 11470 attached [pid 11467] symlink("/dev/binderfs", "./binderfs" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1066, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11470] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11469] <... openat resumed>) = 4 [pid 11467] <... symlink resumed>) = 0 [pid 11465] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 [pid 5045] umount2("./516/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11470] set_robust_list(0x7f504ff7f9a0, 24 [pid 11469] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11468] +++ killed by SIGIO +++ [pid 11467] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11465] rt_sigprocmask(SIG_SETMASK, [], [pid 11461] +++ killed by SIGIO +++ [pid 5049] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11470] <... set_robust_list resumed>) = 0 [pid 11467] <... futex resumed>) = 0 [pid 11464] <... futex resumed>) = ? [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11470] rt_sigprocmask(SIG_SETMASK, [], [pid 11469] +++ killed by SIGIO +++ [pid 11467] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./516/blkio.bfq.io_wait_time_recursive", [pid 11470] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11467] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11465] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1090, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11470] open(".", O_RDONLY [pid 11467] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11465] <... futex resumed>) = 0 [pid 11464] +++ killed by SIGIO +++ [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5045] unlink("./516/blkio.bfq.io_wait_time_recursive" [pid 11470] <... open resumed>) = 3 [pid 11467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11465] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... restart_syscall resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1060, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11470] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... unlink resumed>) = 0 [pid 11470] <... futex resumed>) = 0 [pid 11470] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11467] <... mmap resumed>) = 0x7f504ff5f000 [pid 11465] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 11467] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] umount2("./516/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11470] <... futex resumed>) = 0 [pid 11465] <... futex resumed>) = 1 [pid 5051] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11470] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11467] <... mprotect resumed>) = 0 [pid 11465] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11470] <... fcntl resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 11470] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./516/cgroup.net", [pid 11470] <... futex resumed>) = 0 [pid 11467] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11465] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11470] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11467] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11465] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11470] <... openat resumed>) = 4 [pid 5049] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 11470] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11465] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11471 attached [pid 11465] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./516/cgroup.net" [pid 11471] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11470] +++ killed by SIGIO +++ [pid 11471] <... rseq resumed>) = 0 [pid 11467] <... clone3 resumed> => {parent_tid=[1092]}, 88) = 1092 [pid 5051] newfstatat(AT_FDCWD, "./544/cgroup.cpu", [pid 5049] unlink("./532/cgroup.cpu" [pid 5047] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11471] set_robust_list(0x7f504ff7f9a0, 24 [pid 11467] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 11471] <... set_robust_list resumed>) = 0 [pid 11467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./544/cgroup.cpu" [pid 5049] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11471] rt_sigprocmask(SIG_SETMASK, [], [pid 11467] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] close(3 [pid 11471] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11467] <... futex resumed>) = 0 [pid 5051] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11471] open(".", O_RDONLY [pid 11465] +++ killed by SIGIO +++ [pid 5049] newfstatat(AT_FDCWD, "./532/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1056, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./532/binderfs" [pid 5047] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] rmdir("./516" [pid 11471] <... open resumed>) = 3 [pid 11467] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./544/binderfs", [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11471] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11471] <... futex resumed>) = 0 [pid 11467] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11471] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11467] <... futex resumed>) = 0 [pid 5046] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11471] <... fcntl resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11471] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11467] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11471] <... futex resumed>) = 0 [pid 11467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... openat resumed>) = 3 [pid 11471] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11467] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(3, "", [pid 11471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11467] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11471] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11467] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 11471] <... openat resumed>) = 4 [pid 5051] unlink("./544/binderfs" [pid 5049] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./529/cgroup.cpu" [pid 5045] <... rmdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11471] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11467] <... futex resumed>) = ? [pid 5049] newfstatat(AT_FDCWD, "./532/cgroup", [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] mkdir("./517", 0777 [pid 5051] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 11471] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./532/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./544/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./529/binderfs", [pid 5046] unlink("./527/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11467] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./544/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./529/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1091, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11472 attached [pid 5051] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./527/binderfs", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1036 [pid 5050] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./529/cgroup", [pid 5046] unlink("./527/binderfs" [pid 5050] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11472] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5047] unlink("./529/cgroup" [pid 11472] <... set_robust_list resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5046] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11472] chdir("./517" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5047] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./527/cgroup", [pid 11472] <... chdir resumed>) = 0 [pid 5051] unlink("./544/blkio.bfq.io_wait_time_recursive" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11472] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./527/cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./544/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 11472] <... prctl resumed>) = 0 [pid 5051] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 11472] setpgid(0, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11472] <... setpgid resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./544/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11472] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] newfstatat(AT_FDCWD, "./544/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11472] <... symlink resumed>) = 0 [pid 5051] unlink("./544/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./532/cgroup.net" [pid 5046] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./544/binderfs", [pid 5046] <... unlink resumed>) = 0 [pid 11472] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./544/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 11472] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11472] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./527/cgroup.net" [pid 5051] close(3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./544/cgroup", [pid 5049] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11472] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./544/cgroup" [pid 5046] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 5050] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 5046] rmdir("./527" [pid 11472] <... openat resumed>) = 3 [pid 5051] rmdir("./544" [pid 5050] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 5049] rmdir("./532" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11472] write(3, "1000", 4 [pid 5051] mkdir("./545", 0777 [pid 5050] unlink("./544/blkio.bfq.io_wait_time_recursive" [pid 5049] mkdir("./533", 0777 [pid 5047] unlink("./529/cgroup.net" [pid 5046] <... rmdir resumed>) = 0 [pid 11472] <... write resumed>) = 4 [pid 5047] <... unlink resumed>) = 0 [pid 11472] close(3 [pid 5046] mkdir("./528", 0777 [pid 5047] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 11472] <... close resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11472] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./544/cgroup.net", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./544/cgroup.net") = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 11472] <... symlink resumed>) = 0 [pid 5047] close(3 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] rmdir("./544" [pid 5047] <... close resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] rmdir("./529"./strace-static-x86_64: Process 11473 attached [pid 11473] set_robust_list(0x555556ac56a0, 24 [pid 5050] mkdir("./545", 0777 [pid 11473] <... set_robust_list resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 11473] chdir("./545" [pid 5047] <... rmdir resumed>) = 0 [pid 11473] <... chdir resumed>) = 0 [pid 11472] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] mkdir("./530", 0777 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11474 attached [pid 11472] <... futex resumed>) = 0 [pid 11473] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11473] <... prctl resumed>) = 0 [pid 11472] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1092 [pid 11472] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11473] setpgid(0, 0 [pid 11472] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... mkdir resumed>) = 0 [pid 11474] set_robust_list(0x555556ac56a0, 24 [pid 11473] <... setpgid resumed>) = 0 [pid 11472] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1058 ./strace-static-x86_64: Process 11476 attached ./strace-static-x86_64: Process 11475 attached [pid 11474] <... set_robust_list resumed>) = 0 [pid 11473] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11475] set_robust_list(0x555556ac56a0, 24 [pid 11473] <... symlink resumed>) = 0 [pid 11472] <... mmap resumed>) = 0x7f504ff5f000 [pid 11472] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11476] set_robust_list(0x555556ac56a0, 24 [pid 11474] chdir("./528" [pid 11473] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11472] <... mprotect resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1093 [pid 11476] <... set_robust_list resumed>) = 0 [pid 11475] <... set_robust_list resumed>) = 0 [pid 11474] <... chdir resumed>) = 0 [pid 11473] <... symlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1068 ./strace-static-x86_64: Process 11477 attached [pid 11476] chdir("./545" [pid 11472] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11475] chdir("./533" [pid 11474] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11472] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11474] <... prctl resumed>) = 0 [pid 11472] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1062 [pid 11476] <... chdir resumed>) = 0 [pid 11473] symlink("/syzcgroup/net/syz5", "./cgroup.net"./strace-static-x86_64: Process 11478 attached [pid 11476] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11477] set_robust_list(0x555556ac56a0, 24 [pid 11475] <... chdir resumed>) = 0 [pid 11474] setpgid(0, 0 [pid 11473] <... symlink resumed>) = 0 [pid 11476] <... prctl resumed>) = 0 [pid 11478] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11477] <... set_robust_list resumed>) = 0 [pid 11476] setpgid(0, 0 [pid 11475] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11474] <... setpgid resumed>) = 0 [pid 11473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11472] <... clone3 resumed> => {parent_tid=[1037]}, 88) = 1037 [pid 11478] <... rseq resumed>) = 0 [pid 11477] chdir("./530" [pid 11476] <... setpgid resumed>) = 0 [pid 11475] <... prctl resumed>) = 0 [pid 11474] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11473] <... openat resumed>) = 3 [pid 11472] rt_sigprocmask(SIG_SETMASK, [], [pid 11478] set_robust_list(0x7f504ff7f9a0, 24 [pid 11477] <... chdir resumed>) = 0 [pid 11476] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11475] setpgid(0, 0 [pid 11473] write(3, "1000", 4 [pid 11472] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11478] <... set_robust_list resumed>) = 0 [pid 11477] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11476] <... symlink resumed>) = 0 [pid 11475] <... setpgid resumed>) = 0 [pid 11474] <... symlink resumed>) = 0 [pid 11473] <... write resumed>) = 4 [pid 11472] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11478] rt_sigprocmask(SIG_SETMASK, [], [pid 11473] close(3 [pid 11478] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11477] <... prctl resumed>) = 0 [pid 11474] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11473] <... close resumed>) = 0 [pid 11472] <... futex resumed>) = 0 [pid 11478] open(".", O_RDONLY [pid 11477] setpgid(0, 0 [pid 11476] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11475] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11473] symlink("/dev/binderfs", "./binderfs" [pid 11472] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11476] <... symlink resumed>) = 0 [pid 11473] <... symlink resumed>) = 0 [pid 11473] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11478] <... open resumed>) = 3 [pid 11474] <... symlink resumed>) = 0 [pid 11473] <... futex resumed>) = 0 [pid 11475] <... symlink resumed>) = 0 [pid 11477] <... setpgid resumed>) = 0 [pid 11474] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11478] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11476] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11473] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11478] <... futex resumed>) = 0 [pid 11477] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11476] <... symlink resumed>) = 0 [pid 11475] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11474] <... symlink resumed>) = 0 [pid 11473] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11478] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11472] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11477] <... symlink resumed>) = 0 [pid 11475] <... symlink resumed>) = 0 [pid 11473] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11478] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11477] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11475] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11474] <... openat resumed>) = 3 [pid 11473] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11472] <... futex resumed>) = 0 [pid 11478] <... fcntl resumed>) = 0 [pid 11477] <... symlink resumed>) = 0 [pid 11476] <... openat resumed>) = 3 [pid 11474] write(3, "1000", 4 [pid 11473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11472] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11478] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11475] <... symlink resumed>) = 0 [pid 11474] <... write resumed>) = 4 [pid 11472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11472] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11472] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11478] <... futex resumed>) = 1 [pid 11477] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11476] write(3, "1000", 4 [pid 11473] <... mmap resumed>) = 0x7f504ff5f000 [pid 11478] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11477] <... symlink resumed>) = 0 [pid 11476] <... write resumed>) = 4 [pid 11475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11474] close(3 [pid 11473] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11472] <... futex resumed>) = 0 [pid 11478] <... openat resumed>) = 4 [pid 11477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11476] close(3 [pid 11475] <... openat resumed>) = 3 [pid 11474] <... close resumed>) = 0 [pid 11473] <... mprotect resumed>) = 0 [pid 11472] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11476] <... close resumed>) = 0 [pid 11475] write(3, "1000", 4 [pid 11474] symlink("/dev/binderfs", "./binderfs" [pid 11477] <... openat resumed>) = 3 [pid 11476] symlink("/dev/binderfs", "./binderfs" [pid 11475] <... write resumed>) = 4 [pid 11474] <... symlink resumed>) = 0 [pid 11473] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11475] close(3 [pid 11474] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11475] <... close resumed>) = 0 [pid 11475] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11474] <... futex resumed>) = 0 [pid 11474] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11475] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11473] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11476] <... symlink resumed>) = 0 [pid 11475] <... futex resumed>) = 0 [pid 11474] <... mmap resumed>) = 0x7f504ff5f000 [pid 11473] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11475] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11474] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11477] write(3, "1000", 4) = 4 [pid 11476] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11473] <... clone3 resumed> => {parent_tid=[1093]}, 88) = 1093 [pid 11475] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11474] <... mprotect resumed>) = 0 [pid 11475] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11475] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11474] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11475] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 11479 attached [pid 11479] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11474] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11479] <... rseq resumed>) = 0 [pid 11474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11479] set_robust_list(0x7f504ff7f9a0, 24 [pid 11477] close(3 [pid 11476] <... futex resumed>) = 0 [pid 11473] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11480 attached [pid 11479] <... set_robust_list resumed>) = 0 [pid 11476] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11475] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11474] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 11473] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11480] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11479] rt_sigprocmask(SIG_SETMASK, [], [pid 11478] +++ killed by SIGIO +++ [pid 11477] <... close resumed>) = 0 [pid 11476] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11475] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11474] rt_sigprocmask(SIG_SETMASK, [], [pid 11473] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11472] +++ killed by SIGIO +++ [pid 11480] <... rseq resumed>) = 0 [pid 11479] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11477] symlink("/dev/binderfs", "./binderfs" [pid 11476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11475] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11474] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11473] <... futex resumed>) = 0 [pid 11480] set_robust_list(0x7f504ff7f9a0, 24 [pid 11479] open(".", O_RDONLY [pid 11477] <... symlink resumed>) = 0 [pid 11476] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11473] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11477] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11474] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11481 attached [pid 11480] <... set_robust_list resumed>) = 0 [pid 11479] <... open resumed>) = 3 [pid 11477] <... futex resumed>) = 0 [pid 11476] <... mmap resumed>) = 0x7f504ff5f000 [pid 11475] <... clone3 resumed> => {parent_tid=[1069]}, 88) = 1069 [pid 11474] <... futex resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1036, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11481] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11480] rt_sigprocmask(SIG_SETMASK, [], [pid 11479] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11476] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11475] rt_sigprocmask(SIG_SETMASK, [], [pid 11474] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11481] <... rseq resumed>) = 0 [pid 11480] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11479] <... futex resumed>) = 1 [pid 11475] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11481] set_robust_list(0x7f504ff7f9a0, 24 [pid 11480] open(".", O_RDONLY [pid 11479] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11475] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11481] <... set_robust_list resumed>) = 0 [pid 11475] <... futex resumed>) = 0 [pid 11481] rt_sigprocmask(SIG_SETMASK, [], [pid 11480] <... open resumed>) = 3 [pid 11475] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11476] <... mprotect resumed>) = 0 [pid 11473] <... futex resumed>) = 0 [pid 11481] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11480] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./517", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11481] open(".", O_RDONLY [pid 11480] <... futex resumed>) = 1 [pid 11477] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11476] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11474] <... futex resumed>) = 0 [pid 11473] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11481] <... open resumed>) = 3 [pid 11480] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11479] <... futex resumed>) = 0 [pid 11477] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11474] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11473] <... futex resumed>) = 1 [pid 5045] openat(AT_FDCWD, "./517", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11481] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11479] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11477] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11476] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11474] <... futex resumed>) = 0 [pid 11473] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... openat resumed>) = 3 [pid 11481] <... futex resumed>) = 1 [pid 11480] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11479] <... fcntl resumed>) = 0 [pid 11477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11481] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11480] <... fcntl resumed>) = 0 [pid 11479] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11477] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11475] <... futex resumed>) = 0 [pid 11474] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 11482 attached [pid 11480] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11479] <... futex resumed>) = 1 [pid 11477] <... mmap resumed>) = 0x7f504ff5f000 [pid 11475] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11474] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11473] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11482] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11481] <... futex resumed>) = 0 [pid 11480] <... futex resumed>) = 0 [pid 11479] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11477] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11475] <... futex resumed>) = 1 [pid 11474] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11473] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11473] <... futex resumed>) = 0 [pid 11482] <... rseq resumed>) = 0 [pid 11481] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11480] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11479] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11477] <... mprotect resumed>) = 0 [pid 11476] <... clone3 resumed> => {parent_tid=[1094]}, 88) = 1094 [pid 11475] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11474] <... futex resumed>) = 0 [pid 11473] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, [pid 11482] set_robust_list(0x7f504ff7f9a0, 24 [pid 11481] <... fcntl resumed>) = 0 [pid 11480] <... openat resumed>) = 4 [pid 11476] rt_sigprocmask(SIG_SETMASK, [], [pid 11477] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11476] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11482] <... set_robust_list resumed>) = 0 [pid 11481] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11480] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11479] <... openat resumed>) = 4 [pid 11477] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11476] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11474] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11482] rt_sigprocmask(SIG_SETMASK, [], [pid 11481] <... futex resumed>) = 1 [pid 11480] <... futex resumed>) = ? [pid 11479] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11477] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11476] <... futex resumed>) = 0 [pid 11475] <... futex resumed>) = 0 [pid 11482] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11481] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11480] +++ killed by SIGIO +++ [pid 11475] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11473] <... futex resumed>) = ? [pid 5045] umount2("./517/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11483 attached [pid 11482] open(".", O_RDONLY [pid 11481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11479] +++ killed by SIGIO +++ [pid 11476] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11483] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11483] set_robust_list(0x7f504ff7f9a0, 24 [pid 11475] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./517/cgroup.cpu", [pid 11483] <... set_robust_list resumed>) = 0 [pid 11481] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11475] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11483] rt_sigprocmask(SIG_SETMASK, [], [pid 11482] <... open resumed>) = 3 [pid 11481] <... openat resumed>) = 4 [pid 11477] <... clone3 resumed> => {parent_tid=[1063]}, 88) = 1063 [pid 11474] +++ killed by SIGIO +++ [pid 11477] rt_sigprocmask(SIG_SETMASK, [], [pid 11483] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11482] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11481] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11475] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 5045] unlink("./517/cgroup.cpu" [pid 11483] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11482] <... futex resumed>) = 1 [pid 11477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11476] <... futex resumed>) = 0 [pid 11473] +++ killed by SIGIO +++ [pid 11482] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11477] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11476] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1058, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... unlink resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1092, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11483] <... futex resumed>) = 0 [pid 11482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11477] <... futex resumed>) = 1 [pid 11476] <... futex resumed>) = 0 [pid 5046] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11483] open(".", O_RDONLY [pid 11482] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11477] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11476] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./517/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11483] <... open resumed>) = 3 [pid 11482] <... fcntl resumed>) = 0 [pid 11483] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11482] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11483] <... futex resumed>) = 1 [pid 11482] <... futex resumed>) = 1 [pid 11476] <... futex resumed>) = 0 [pid 11477] <... futex resumed>) = 0 [pid 11483] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11482] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11476] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11477] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11476] <... futex resumed>) = 0 [pid 11483] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11482] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11477] <... futex resumed>) = 0 [pid 11476] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./517/binderfs", [pid 11483] <... fcntl resumed>) = 0 [pid 11482] <... openat resumed>) = 4 [pid 11481] +++ killed by SIGIO +++ [pid 11477] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11476] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11475] +++ killed by SIGIO +++ [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11483] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11482] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11476] ???( [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1068, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./517/binderfs" [pid 11483] <... futex resumed>) = 0 [pid 11477] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] getdents64(3, [pid 11483] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11482] +++ killed by SIGIO +++ [pid 11477] <... futex resumed>) = 0 [pid 11476] <... ??? resumed>) = ? [pid 11483] <... openat resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 11483] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11477] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11477] <... futex resumed>) = ? [pid 5051] <... openat resumed>) = 3 [pid 5049] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./517/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11483] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] getdents64(3, [pid 11476] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./517/cgroup", [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1093, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11477] +++ killed by SIGIO +++ [pid 5051] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... openat resumed>) = 3 [pid 5046] unlink("./528/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1062, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] unlink("./517/cgroup" [pid 5051] newfstatat(AT_FDCWD, "./545/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./545/cgroup.cpu" [pid 5050] getdents64(3, [pid 5049] getdents64(3, [pid 5047] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./517/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./528/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./545/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./545/cgroup.cpu" [pid 5051] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./517/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./545/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./545/binderfs") = 0 [pid 5047] <... openat resumed>) = 3 [pid 5050] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./545/binderfs", [pid 5049] unlink("./533/cgroup.cpu" [pid 5047] newfstatat(3, "", [pid 5046] unlink("./528/binderfs" [pid 5045] unlink("./517/blkio.bfq.io_wait_time_recursive" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./545/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./545/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5051] unlink("./545/binderfs" [pid 5045] umount2("./517/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./517/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./528/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 5045] unlink("./517/cgroup.net" [pid 5051] newfstatat(AT_FDCWD, "./545/cgroup", [pid 5050] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./533/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] unlink("./530/cgroup.cpu" [pid 5051] unlink("./545/cgroup" [pid 5050] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./528/cgroup" [pid 5045] getdents64(3, [pid 5051] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./545/cgroup.net", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", [pid 5050] unlink("./545/cgroup.net" [pid 5049] unlink("./533/binderfs" [pid 5047] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 5047] newfstatat(AT_FDCWD, "./530/binderfs", [pid 5051] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] unlink("./530/binderfs" [pid 5046] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] rmdir("./517" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] close(3 [pid 5049] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./545/cgroup.net", [pid 5050] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] rmdir("./545" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./545/cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./533/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./530/cgroup", [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 5045] mkdir("./518", 0777 [pid 5051] getdents64(3, [pid 5050] mkdir("./546", 0777 [pid 5049] unlink("./533/cgroup" [pid 5047] unlink("./530/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 5049] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./528/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./533/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./528/cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... close resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] rmdir("./545" [pid 5049] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./533/cgroup.net", [pid 5046] close(3 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 5046] <... close resumed>) = 0 [pid 5049] unlink("./533/cgroup.net" [pid 5046] rmdir("./528" [pid 5051] mkdir("./546", 0777 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5049] getdents64(3, ./strace-static-x86_64: Process 11485 attached ./strace-static-x86_64: Process 11484 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1095 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 11485] set_robust_list(0x555556ac56a0, 24 [pid 5049] close(3 [pid 5046] mkdir("./529", 0777 [pid 11485] <... set_robust_list resumed>) = 0 [pid 11484] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1038 [pid 11485] chdir("./518" [pid 5049] rmdir("./533" [pid 11484] <... set_robust_list resumed>) = 0 [pid 5047] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11485] <... chdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11484] chdir("./546" [pid 5047] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 11484] <... chdir resumed>) = 0 [pid 11485] setpgid(0, 0 [pid 11484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] mkdir("./534", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./530/cgroup.net" [pid 11484] <... prctl resumed>) = 0 [pid 11485] <... setpgid resumed>) = 0 [pid 11484] setpgid(0, 0 [pid 5047] <... unlink resumed>) = 0 [pid 11485] symlink("/syzcgroup/unified/syz1", "./cgroup"./strace-static-x86_64: Process 11486 attached ) = 0 [pid 11484] <... setpgid resumed>) = 0 [pid 5047] getdents64(3, [pid 11485] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1094 [pid 5049] <... mkdir resumed>) = 0 [pid 11485] <... symlink resumed>) = 0 [pid 11484] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11488 attached ./strace-static-x86_64: Process 11487 attached [pid 11486] set_robust_list(0x555556ac56a0, 24 [pid 11485] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11484] <... symlink resumed>) = 0 [pid 5047] close(3 [pid 11488] set_robust_list(0x555556ac56a0, 24 [pid 11487] set_robust_list(0x555556ac56a0, 24 [pid 11486] <... set_robust_list resumed>) = 0 [pid 11485] <... symlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./530" [pid 11487] <... set_robust_list resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1060 [pid 11486] chdir("./546" [pid 11487] chdir("./529" [pid 5047] <... rmdir resumed>) = 0 [pid 11486] <... chdir resumed>) = 0 [pid 11484] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11488] <... set_robust_list resumed>) = 0 [pid 11486] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] mkdir("./531", 0777 [pid 11487] <... chdir resumed>) = 0 [pid 11485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11486] <... prctl resumed>) = 0 [pid 11484] <... symlink resumed>) = 0 [pid 11485] <... openat resumed>) = 3 [pid 11487] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... mkdir resumed>) = 0 [pid 11486] setpgid(0, 0) = 0 [pid 11484] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11487] <... prctl resumed>) = 0 [pid 11485] write(3, "1000", 4 [pid 11488] chdir("./534" [pid 11487] setpgid(0, 0 [pid 11485] <... write resumed>) = 4 [pid 11487] <... setpgid resumed>) = 0 [pid 11486] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11485] close(3) = 0 [pid 11484] <... symlink resumed>) = 0 [pid 11488] <... chdir resumed>) = 0 [pid 11487] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11486] <... symlink resumed>) = 0 [pid 11485] symlink("/dev/binderfs", "./binderfs" [pid 11484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11488] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11487] <... symlink resumed>) = 0 [pid 11486] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11485] <... symlink resumed>) = 0 [pid 11484] <... openat resumed>) = 3 [pid 11487] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11485] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1070 [pid 11487] <... symlink resumed>) = 0 [pid 11485] <... futex resumed>) = 0 [pid 11485] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11488] <... prctl resumed>) = 0 [pid 11487] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11486] <... symlink resumed>) = 0 [pid 11485] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11488] setpgid(0, 0 [pid 11487] <... symlink resumed>) = 0 [pid 11486] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11484] write(3, "1000", 4 [pid 11487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11485] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11484] <... write resumed>) = 4 [pid 11488] <... setpgid resumed>) = 0 [pid 11487] <... openat resumed>) = 3 [pid 11486] <... symlink resumed>) = 0 [pid 11485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11485] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11487] write(3, "1000", 4) = 4 [pid 11485] <... mprotect resumed>) = 0 [pid 11484] close(3 [pid 11488] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11487] close(3 [pid 11486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11485] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11484] <... close resumed>) = 0 [pid 11488] <... symlink resumed>) = 0 [pid 11487] <... close resumed>) = 0 [pid 11484] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 11489 attached [pid 11487] symlink("/dev/binderfs", "./binderfs" [pid 11486] <... openat resumed>) = 3 [pid 11485] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1064 [pid 11489] set_robust_list(0x555556ac56a0, 24 [pid 11487] <... symlink resumed>) = 0 [pid 11485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11484] <... symlink resumed>) = 0 [pid 11486] write(3, "1000", 4 [pid 11488] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11489] <... set_robust_list resumed>) = 0 [pid 11487] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11486] <... write resumed>) = 4 [pid 11488] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11490 attached [pid 11489] chdir("./531" [pid 11488] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11487] <... futex resumed>) = 0 [pid 11486] close(3 [pid 11485] <... clone3 resumed> => {parent_tid=[1039]}, 88) = 1039 [pid 11484] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11490] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11489] <... chdir resumed>) = 0 [pid 11487] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11485] rt_sigprocmask(SIG_SETMASK, [], [pid 11486] <... close resumed>) = 0 [pid 11489] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11487] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11485] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11489] <... prctl resumed>) = 0 [pid 11487] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11490] <... rseq resumed>) = 0 [pid 11489] setpgid(0, 0 [pid 11487] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11486] symlink("/dev/binderfs", "./binderfs" [pid 11485] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11484] <... futex resumed>) = 0 [pid 11490] set_robust_list(0x7f504ff7f9a0, 24 [pid 11489] <... setpgid resumed>) = 0 [pid 11487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11485] <... futex resumed>) = 0 [pid 11484] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11490] <... set_robust_list resumed>) = 0 [pid 11489] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11488] <... symlink resumed>) = 0 [pid 11487] <... mmap resumed>) = 0x7f504ff5f000 [pid 11486] <... symlink resumed>) = 0 [pid 11485] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11484] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11490] rt_sigprocmask(SIG_SETMASK, [], [pid 11489] <... symlink resumed>) = 0 [pid 11488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11487] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11486] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11490] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11486] <... futex resumed>) = 0 [pid 11490] open(".", O_RDONLY [pid 11489] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11488] <... openat resumed>) = 3 [pid 11487] <... mprotect resumed>) = 0 [pid 11486] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11490] <... open resumed>) = 3 [pid 11489] <... symlink resumed>) = 0 [pid 11488] write(3, "1000", 4 [pid 11486] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11487] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11490] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11489] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11488] <... write resumed>) = 4 [pid 11487] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11486] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11490] <... futex resumed>) = 1 [pid 11489] <... symlink resumed>) = 0 [pid 11488] close(3 [pid 11487] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11486] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11485] <... futex resumed>) = 0 [pid 11484] <... mmap resumed>) = 0x7f504ff5f000 ./strace-static-x86_64: Process 11491 attached [pid 11490] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11488] <... close resumed>) = 0 [pid 11486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11485] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11491] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11485] <... futex resumed>) = 0 [pid 11487] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 11491] <... rseq resumed>) = 0 [pid 11490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11488] symlink("/dev/binderfs", "./binderfs" [pid 11487] rt_sigprocmask(SIG_SETMASK, [], [pid 11486] <... mmap resumed>) = 0x7f504ff5f000 [pid 11485] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11484] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11491] set_robust_list(0x7f504ff7f9a0, 24 [pid 11490] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11489] <... openat resumed>) = 3 [pid 11488] <... symlink resumed>) = 0 [pid 11487] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11486] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11484] <... mprotect resumed>) = 0 [pid 11490] <... fcntl resumed>) = 0 [pid 11490] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11486] <... mprotect resumed>) = 0 [pid 11484] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11491] <... set_robust_list resumed>) = 0 [pid 11490] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] write(3, "1000", 4 [pid 11488] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11487] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11486] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11491] rt_sigprocmask(SIG_SETMASK, [], [pid 11489] <... write resumed>) = 4 [pid 11488] <... futex resumed>) = 0 [pid 11487] <... futex resumed>) = 0 [pid 11485] <... futex resumed>) = 0 [pid 11484] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11491] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11489] close(3 [pid 11488] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11487] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11486] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11485] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11492 attached [pid 11491] open(".", O_RDONLY [pid 11490] <... futex resumed>) = 0 [pid 11489] <... close resumed>) = 0 [pid 11488] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11485] <... futex resumed>) = 1 [pid 11490] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11489] symlink("/dev/binderfs", "./binderfs" [pid 11488] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11492] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11491] <... open resumed>) = 3 [pid 11485] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11491] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11493 attached [pid 11492] <... rseq resumed>) = 0 [pid 11491] <... futex resumed>) = 1 [pid 11490] <... openat resumed>) = 4 [pid 11489] <... symlink resumed>) = 0 [pid 11488] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11487] <... futex resumed>) = 0 [pid 11484] <... clone3 resumed> => {parent_tid=[1096]}, 88) = 1096 [pid 11493] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11492] set_robust_list(0x7f504ff7f9a0, 24 [pid 11491] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11487] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11484] rt_sigprocmask(SIG_SETMASK, [], [pid 11493] <... rseq resumed>) = 0 [pid 11492] <... set_robust_list resumed>) = 0 [pid 11491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11489] <... futex resumed>) = 0 [pid 11488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11487] <... futex resumed>) = 0 [pid 11486] <... clone3 resumed> => {parent_tid=[1095]}, 88) = 1095 [pid 11484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11493] set_robust_list(0x7f504ff7f9a0, 24 [pid 11492] rt_sigprocmask(SIG_SETMASK, [], [pid 11491] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11490] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11489] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11487] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11486] rt_sigprocmask(SIG_SETMASK, [], [pid 11484] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11493] <... set_robust_list resumed>) = 0 [pid 11492] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11491] <... fcntl resumed>) = 0 [pid 11489] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11488] <... mmap resumed>) = 0x7f504ff5f000 [pid 11486] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11485] <... futex resumed>) = ? [pid 11484] <... futex resumed>) = 0 [pid 11493] rt_sigprocmask(SIG_SETMASK, [], [pid 11492] open(".", O_RDONLY [pid 11491] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11490] +++ killed by SIGIO +++ [pid 11489] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11486] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11484] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11492] <... open resumed>) = 3 [pid 11491] <... futex resumed>) = 1 [pid 11489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11487] <... futex resumed>) = 0 [pid 11491] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11487] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11493] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11492] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11488] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11487] <... futex resumed>) = 0 [pid 11486] <... futex resumed>) = 0 [pid 11492] <... futex resumed>) = 1 [pid 11491] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11487] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11484] <... futex resumed>) = 0 [pid 11492] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11491] <... openat resumed>) = 4 [pid 11488] <... mprotect resumed>) = 0 [pid 11485] +++ killed by SIGIO +++ [pid 11484] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11493] open(".", O_RDONLY [pid 11492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11486] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11484] <... futex resumed>) = 0 [pid 11492] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11488] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11484] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1038, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11492] <... fcntl resumed>) = 0 [pid 11491] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11492] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11487] <... futex resumed>) = ? [pid 11493] <... open resumed>) = 3 [pid 11492] <... futex resumed>) = 1 [pid 11489] <... mmap resumed>) = 0x7f504ff5f000 [pid 11488] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11484] <... futex resumed>) = 0 [pid 5045] umount2("./518", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11493] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11492] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11488] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11484] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11494 attached [pid 11493] <... futex resumed>) = 1 [pid 11492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11486] <... futex resumed>) = 0 [pid 11484] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11494] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11493] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] <... mprotect resumed>) = 0 [pid 11488] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 11486] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11489] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11488] rt_sigprocmask(SIG_SETMASK, [], [pid 11486] <... futex resumed>) = 0 [pid 11493] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11488] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11486] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11493] <... fcntl resumed>) = 0 [pid 11488] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11493] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11492] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11491] +++ killed by SIGIO +++ [pid 11494] <... rseq resumed>) = 0 [pid 11488] <... futex resumed>) = 0 [pid 11487] +++ killed by SIGIO +++ [pid 11484] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11489] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] openat(AT_FDCWD, "./518", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11494] set_robust_list(0x7f504ff7f9a0, 24 [pid 11493] <... futex resumed>) = 1 [pid 11492] <... openat resumed>) = 4 [pid 11488] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11486] <... futex resumed>) = 0 [pid 11484] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1060, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11494] <... set_robust_list resumed>) = 0 [pid 11493] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11486] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... openat resumed>) = 3 [pid 11494] rt_sigprocmask(SIG_SETMASK, [], [pid 11493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11486] <... futex resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11492] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11484] restart_syscall(<... resuming interrupted futex ...> [pid 11494] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11493] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11484] <... restart_syscall resumed>) = ? ./strace-static-x86_64: Process 11495 attached [pid 11494] open(".", O_RDONLY [pid 11493] <... openat resumed>) = 4 [pid 11492] +++ killed by SIGIO +++ [pid 11489] <... clone3 resumed> => {parent_tid=[1065]}, 88) = 1065 [pid 11486] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11494] <... open resumed>) = 3 [pid 11494] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] getdents64(3, [pid 11495] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11493] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11495] <... rseq resumed>) = 0 [pid 11494] <... futex resumed>) = 1 [pid 11488] <... futex resumed>) = 0 [pid 11486] <... futex resumed>) = ? [pid 11495] set_robust_list(0x7f504ff7f9a0, 24 [pid 11494] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11493] +++ killed by SIGIO +++ [pid 11489] rt_sigprocmask(SIG_SETMASK, [], [pid 11488] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11495] <... set_robust_list resumed>) = 0 [pid 11484] +++ killed by SIGIO +++ [pid 5046] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11494] <... fcntl resumed>) = 0 [pid 11494] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11494] <... futex resumed>) = 0 [pid 11489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./518/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11494] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11489] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1095, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11488] <... futex resumed>) = 0 [pid 11488] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... openat resumed>) = 3 [pid 11489] <... futex resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 11489] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11495] rt_sigprocmask(SIG_SETMASK, [], [pid 11488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(3, "", [pid 5045] newfstatat(AT_FDCWD, "./518/cgroup.cpu", [pid 11495] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11488] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11495] open(".", O_RDONLY [pid 11488] <... futex resumed>) = 1 [pid 11494] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11494] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11488] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11495] <... open resumed>) = 3 [pid 11494] <... openat resumed>) = 4 [pid 11486] +++ killed by SIGIO +++ [pid 11488] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] getdents64(3, [pid 11495] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11494] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11488] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1094, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./518/cgroup.cpu" [pid 11495] <... futex resumed>) = 1 [pid 11494] <... futex resumed>) = ? [pid 11489] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 11495] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11494] +++ killed by SIGIO +++ [pid 11489] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... openat resumed>) = 3 [pid 5046] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11489] <... futex resumed>) = 0 [pid 5051] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11489] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5045] umount2("./518/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11495] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11495] <... fcntl resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./518/binderfs", [pid 11495] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 5051] newfstatat(3, "", [pid 5050] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11495] <... futex resumed>) = 1 [pid 11489] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11489] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11489] <... futex resumed>) = 0 [pid 11489] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5045] unlink("./518/binderfs" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11495] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./529/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./546/cgroup.cpu", [pid 5045] umount2("./518/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11495] <... openat resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./546/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./546/cgroup.cpu" [pid 5046] <... unlink resumed>) = 0 [pid 11495] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11488] +++ killed by SIGIO +++ [pid 5051] unlink("./546/cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./518/cgroup", [pid 11489] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1070, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11495] +++ killed by SIGIO +++ [pid 5046] newfstatat(AT_FDCWD, "./529/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./529/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./518/cgroup" [pid 5051] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11489] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./546/binderfs", [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./546/binderfs", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./518/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./546/binderfs" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1064, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./546/binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./518/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./529/cgroup", [pid 5050] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./518/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./546/cgroup", [pid 5049] <... openat resumed>) = 3 [pid 5046] unlink("./529/cgroup") = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(3, "", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./546/cgroup" [pid 5047] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./546/cgroup", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./518/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 5051] unlink("./546/cgroup" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./518/cgroup.net", [pid 5046] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./529/cgroup.net") = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 5046] rmdir("./529" [pid 5045] unlink("./518/cgroup.net" [pid 5047] <... openat resumed>) = 3 [pid 5046] <... rmdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./530", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 5045] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./534/cgroup.cpu", [pid 5051] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 5045] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./534/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] rmdir("./518"./strace-static-x86_64: Process 11496 attached [pid 5051] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 5045] <... rmdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5049] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11496] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1062 [pid 11496] <... set_robust_list resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./534/binderfs", [pid 5050] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11496] chdir("./530" [pid 5051] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./534/binderfs" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] mkdir("./519", 0777 [pid 11496] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 5049] <... unlink resumed>) = 0 [pid 11496] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] unlink("./546/cgroup.net" [pid 5047] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 11496] <... prctl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11496] setpgid(0, 0 [pid 5047] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 11496] <... setpgid resumed>) = 0 [pid 5050] unlink("./546/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11496] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 5047] unlink("./531/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./534/cgroup", [pid 5050] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5049] unlink("./534/cgroup" [pid 5050] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5050] rmdir("./546"./strace-static-x86_64: Process 11497 attached [pid 11496] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11496] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./531/binderfs", [pid 5051] close(3 [pid 11496] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11497] set_robust_list(0x555556ac56a0, 24 [pid 11496] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] rmdir("./546" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./531/binderfs" [pid 5050] mkdir("./547", 0777 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 11496] <... symlink resumed>) = 0 [pid 5047] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./534/blkio.bfq.io_wait_time_recursive" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11497] <... set_robust_list resumed>) = 0 [pid 11496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] mkdir("./547", 0777 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1040 [pid 11497] chdir("./519" [pid 5047] newfstatat(AT_FDCWD, "./531/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11498 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1097 [pid 11496] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./531/cgroup" [pid 11498] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11498] chdir("./547" [pid 5051] <... mkdir resumed>) = 0 [pid 11498] <... chdir resumed>) = 0 [pid 11498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11496] write(3, "1000", 4 [pid 11497] <... chdir resumed>) = 0 [pid 11497] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11498] setpgid(0, 0 [pid 11497] <... prctl resumed>) = 0 [pid 11496] <... write resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11498] <... setpgid resumed>) = 0 [pid 11497] setpgid(0, 0 [pid 11496] close(3 [pid 11498] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] newfstatat(AT_FDCWD, "./534/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11497] <... setpgid resumed>) = 0 [pid 11496] <... close resumed>) = 0 [pid 11498] <... symlink resumed>) = 0 [pid 11497] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11498] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11496] symlink("/dev/binderfs", "./binderfs" [pid 11498] <... symlink resumed>) = 0 [pid 11498] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11498] <... symlink resumed>) = 0 [pid 11498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11496] <... symlink resumed>) = 0 [pid 5049] unlink("./534/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 11498] write(3, "1000", 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11497] <... symlink resumed>) = 0 [pid 11498] <... write resumed>) = 4 [pid 11498] close(3) = 0 [pid 11498] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 11497] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5047] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 11496] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11498] <... symlink resumed>) = 0 [pid 11496] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11498] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11497] <... symlink resumed>) = 0 [pid 11498] <... futex resumed>) = 0 [pid 11498] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11498] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11498] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11498] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11498] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] getdents64(3, [pid 11498] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11498] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11499 attached [pid 11499] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11498] <... clone3 resumed> => {parent_tid=[1098]}, 88) = 1098 [pid 11499] <... rseq resumed>) = 0 [pid 11497] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11496] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11499] set_robust_list(0x7f504ff7f9a0, 24 [pid 11498] rt_sigprocmask(SIG_SETMASK, [], [pid 11499] <... set_robust_list resumed>) = 0 [pid 11498] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11499] rt_sigprocmask(SIG_SETMASK, [], [pid 11498] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11499] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11498] <... futex resumed>) = 0 [pid 11496] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11499] open(".", O_RDONLY [pid 11497] <... symlink resumed>) = 0 [pid 5049] close(3 [pid 11496] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11500 attached [pid 11499] <... open resumed>) = 3 [pid 11498] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11496] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 11500] set_robust_list(0x555556ac56a0, 24 [pid 11499] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11498] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11497] <... openat resumed>) = 3 [pid 11500] <... set_robust_list resumed>) = 0 [pid 11499] <... futex resumed>) = 0 [pid 11498] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11497] write(3, "1000", 4 [pid 11496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1096 [pid 5049] rmdir("./534" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11500] chdir("./547" [pid 11499] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11498] <... futex resumed>) = 0 [pid 11497] <... write resumed>) = 4 [pid 11496] <... mmap resumed>) = 0x7f504ff5f000 [pid 11497] close(3 [pid 11496] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] unlink("./531/cgroup.net" [pid 11497] <... close resumed>) = 0 [pid 11500] <... chdir resumed>) = 0 [pid 11499] <... fcntl resumed>) = 0 [pid 11498] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 11500] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11499] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11498] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11497] symlink("/dev/binderfs", "./binderfs" [pid 11496] <... mprotect resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] getdents64(3, [pid 11500] <... prctl resumed>) = 0 [pid 11499] <... futex resumed>) = 0 [pid 11498] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11497] <... symlink resumed>) = 0 [pid 5049] mkdir("./535", 0777 [pid 11500] setpgid(0, 0 [pid 11499] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11498] <... futex resumed>) = 0 [pid 11497] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11496] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11500] <... setpgid resumed>) = 0 [pid 11499] <... openat resumed>) = 4 [pid 11498] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11497] <... futex resumed>) = 0 [pid 11496] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] close(3 [pid 11500] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11499] +++ killed by SIGIO +++ [pid 11497] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11496] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... close resumed>) = 0 [pid 11500] <... symlink resumed>) = 0 [pid 11497] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11497] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11500] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11497] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] rmdir("./531" [pid 11500] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11502 attached ./strace-static-x86_64: Process 11501 attached [pid 11498] +++ killed by SIGIO +++ [pid 11497] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11501] set_robust_list(0x555556ac56a0, 24 [pid 11500] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11502] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11497] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1097, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11502] <... rseq resumed>) = 0 [pid 11501] <... set_robust_list resumed>) = 0 [pid 11500] <... symlink resumed>) = 0 [pid 11497] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11502] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11501] chdir("./535" [pid 11500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11497] <... mprotect resumed>) = 0 [pid 11496] <... clone3 resumed> => {parent_tid=[1063]}, 88) = 1063 [pid 5047] <... rmdir resumed>) = 0 [pid 11502] rt_sigprocmask(SIG_SETMASK, [], [pid 11501] <... chdir resumed>) = 0 [pid 11502] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11501] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11500] <... openat resumed>) = 3 [pid 11497] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11496] rt_sigprocmask(SIG_SETMASK, [], [pid 11502] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11501] <... prctl resumed>) = 0 [pid 11497] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11496] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11496] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] setpgid(0, 0 [pid 11502] <... futex resumed>) = 0 [pid 11497] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11496] <... futex resumed>) = 1 [pid 5047] mkdir("./532", 0777 [pid 5050] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11503 attached [pid 11502] open(".", O_RDONLY [pid 11501] <... setpgid resumed>) = 0 [pid 11500] write(3, "1000", 4 [pid 11496] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 11503] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11502] <... open resumed>) = 3 [pid 11501] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11500] <... write resumed>) = 4 [pid 11497] <... clone3 resumed> => {parent_tid=[1041]}, 88) = 1041 [pid 5050] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1072 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11500] close(3) = 0 [pid 11500] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11500] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 11504 attached [pid 11503] <... rseq resumed>) = 0 [pid 11501] <... symlink resumed>) = 0 [pid 11500] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11497] rt_sigprocmask(SIG_SETMASK, [], [pid 11502] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... openat resumed>) = 3 [pid 11504] set_robust_list(0x555556ac56a0, 24 [pid 11503] set_robust_list(0x7f504ff7f9a0, 24 [pid 11502] <... futex resumed>) = 1 [pid 11501] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11500] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11497] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11496] <... futex resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1066 [pid 11503] <... set_robust_list resumed>) = 0 [pid 11502] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11497] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11496] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] <... symlink resumed>) = 0 [pid 11504] <... set_robust_list resumed>) = 0 [pid 11503] rt_sigprocmask(SIG_SETMASK, [], [pid 11502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11500] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11497] <... futex resumed>) = 0 [pid 11496] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11503] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11502] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11501] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11497] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11496] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 11502] <... fcntl resumed>) = 0 [pid 11501] <... symlink resumed>) = 0 [pid 11500] <... mmap resumed>) = 0x7f504ff5f000 [pid 11503] open(".", O_RDONLY [pid 11502] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11500] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11502] <... futex resumed>) = 1 [pid 11500] <... mprotect resumed>) = 0 [pid 11496] <... futex resumed>) = 0 [pid 11501] <... openat resumed>) = 3 [pid 11504] chdir("./532" [pid 11503] <... open resumed>) = 3 [pid 11502] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11500] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11496] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11504] <... chdir resumed>) = 0 [pid 11503] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11501] write(3, "1000", 4 [pid 11500] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11496] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11504] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11502] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11501] <... write resumed>) = 4 [pid 11500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11496] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./547/cgroup.cpu", ./strace-static-x86_64: Process 11505 attached [pid 11504] <... prctl resumed>) = 0 [pid 11503] <... futex resumed>) = 1 [pid 11501] close(3 [pid 11497] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11505] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11504] setpgid(0, 0 [pid 11503] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11502] <... openat resumed>) = 4 [pid 11501] <... close resumed>) = 0 [pid 11500] <... clone3 resumed> => {parent_tid=[1097]}, 88) = 1097 [pid 11497] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11496] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] unlink("./547/cgroup.cpu" [pid 11505] <... rseq resumed>) = 0 [pid 11504] <... setpgid resumed>) = 0 [pid 11503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11502] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] symlink("/dev/binderfs", "./binderfs" [pid 11500] rt_sigprocmask(SIG_SETMASK, [], [pid 11497] <... futex resumed>) = 0 [pid 11496] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11505] set_robust_list(0x7f504ff7f9a0, 24 [pid 11500] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11505] <... set_robust_list resumed>) = 0 [pid 11501] <... symlink resumed>) = 0 [pid 11500] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11505] rt_sigprocmask(SIG_SETMASK, [], [pid 11503] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11502] <... futex resumed>) = ? [pid 11501] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11500] <... futex resumed>) = 0 [pid 11497] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11505] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11504] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11503] <... fcntl resumed>) = 0 [pid 11502] +++ killed by SIGIO +++ [pid 11501] <... futex resumed>) = 0 [pid 11500] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11505] open(".", O_RDONLY) = 3 [pid 11505] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11500] <... futex resumed>) = 0 [pid 11500] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11505] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11500] <... futex resumed>) = 0 [pid 11500] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11505] <... fcntl resumed>) = 0 [pid 11504] <... symlink resumed>) = 0 [pid 11503] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11496] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11505] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11504] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11503] <... futex resumed>) = 1 [pid 11501] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11497] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./547/binderfs", [pid 11505] <... futex resumed>) = 1 [pid 11503] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11501] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11500] <... futex resumed>) = 0 [pid 11497] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1062, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11504] <... symlink resumed>) = 0 [pid 11505] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11501] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11500] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11497] <... futex resumed>) = 0 [pid 5046] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11504] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11503] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11501] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11500] <... futex resumed>) = 0 [pid 11497] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./547/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11505] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11504] <... symlink resumed>) = 0 [pid 11500] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11505] <... openat resumed>) = 4 [pid 5046] <... openat resumed>) = 3 [pid 5046] newfstatat(3, "", [pid 11503] <... openat resumed>) = 4 [pid 11501] <... mmap resumed>) = 0x7f504ff5f000 [pid 11505] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11501] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11500] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... unlink resumed>) = 0 [pid 11497] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11503] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11501] <... mprotect resumed>) = 0 [pid 11497] ???( [pid 5050] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11505] +++ killed by SIGIO +++ [pid 11504] <... openat resumed>) = 3 [pid 11503] +++ killed by SIGIO +++ [pid 11501] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11497] <... ??? resumed>) = ? [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11504] write(3, "1000", 4 [pid 11501] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./547/cgroup", [pid 11501] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11500] +++ killed by SIGIO +++ [pid 11497] +++ killed by SIGIO +++ [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11506 attached [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11506] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11501] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 5050] unlink("./547/cgroup" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1040, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11506] <... rseq resumed>) = 0 [pid 11504] <... write resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11504] close(3 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1096, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 11504] <... close resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11504] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... restart_syscall resumed>) = 0 [pid 5046] unlink("./530/cgroup.cpu" [pid 11504] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11506] set_robust_list(0x7f504ff7f9a0, 24 [pid 11501] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./530/binderfs", [pid 11504] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11506] <... set_robust_list resumed>) = 0 [pid 11501] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11504] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 11506] rt_sigprocmask(SIG_SETMASK, [], [pid 11504] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11501] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11506] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11504] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11501] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 11501] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./519", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11506] open(".", O_RDONLY [pid 11504] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 5046] unlink("./530/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11506] <... open resumed>) = 3 [pid 11504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(3, "", [pid 5050] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./519", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11506] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11504] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11506] <... futex resumed>) = 1 [pid 11504] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11501] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 11506] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11504] <... mprotect resumed>) = 0 [pid 11501] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./530/cgroup", [pid 11506] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11504] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11501] <... futex resumed>) = 0 [pid 5051] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./547/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 11506] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11504] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11501] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./530/cgroup" [pid 11506] <... fcntl resumed>) = 0 [pid 11504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./547/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11506] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5045] getdents64(3, ./strace-static-x86_64: Process 11507 attached [pid 11506] <... futex resumed>) = 1 [pid 11504] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 11501] <... futex resumed>) = 0 [pid 5051] unlink("./547/cgroup.cpu" [pid 5046] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11507] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11506] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11504] rt_sigprocmask(SIG_SETMASK, [], [pid 11501] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11507] <... rseq resumed>) = 0 [pid 11506] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11504] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11501] <... futex resumed>) = 0 [pid 5051] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] close(3 [pid 5045] umount2("./519/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11507] set_robust_list(0x7f504ff7f9a0, 24 [pid 11506] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11504] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11501] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 11507] <... set_robust_list resumed>) = 0 [pid 11504] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./547/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11507] rt_sigprocmask(SIG_SETMASK, [], [pid 11504] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11501] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./519/cgroup.cpu", [pid 11507] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11501] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] unlink("./547/binderfs" [pid 11507] open(".", O_RDONLY [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11507] <... open resumed>) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11507] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./547/cgroup", [pid 11507] <... futex resumed>) = 1 [pid 11504] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11507] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11504] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./519/cgroup.cpu" [pid 11506] <... openat resumed>) = ? [pid 5050] rmdir("./547" [pid 11507] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11504] <... futex resumed>) = 0 [pid 5051] unlink("./547/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 11507] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11504] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11507] <... fcntl resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11507] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./530/cgroup.net" [pid 11507] <... futex resumed>) = 1 [pid 11504] <... futex resumed>) = 0 [pid 5051] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11507] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11504] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 11507] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11507] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11504] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11507] <... openat resumed>) = 4 [pid 5046] getdents64(3, [pid 5045] umount2("./519/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] mkdir("./548", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./519/binderfs", [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./530" [pid 11506] +++ killed by SIGIO +++ [pid 11504] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11501] +++ killed by SIGIO +++ [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./519/binderfs" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1072, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11508 attached [pid 11507] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5046] mkdir("./531", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 5049] <... restart_syscall resumed>) = 0 [pid 5045] umount2("./519/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11508] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./547/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11508] <... set_robust_list resumed>) = 0 [pid 5051] close(3 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1099 [pid 11504] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 5051] rmdir("./547" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1066, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11508] chdir("./548" [pid 5045] newfstatat(AT_FDCWD, "./519/cgroup", [pid 11508] <... chdir resumed>) = 0 [pid 5049] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11508] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./519/cgroup" [pid 5049] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11508] <... prctl resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] mkdir("./548", 0777 [pid 5049] <... openat resumed>) = 3 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11508] setpgid(0, 0 [pid 5049] newfstatat(3, "", [pid 5045] umount2("./519/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11508] <... setpgid resumed>) = 0 [pid 11508] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5047] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./519/blkio.bfq.io_wait_time_recursive", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11509 attached [pid 5051] <... mkdir resumed>) = 0 [pid 5049] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./519/blkio.bfq.io_wait_time_recursive" [pid 11509] set_robust_list(0x555556ac56a0, 24 [pid 11508] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1064 [pid 5045] <... unlink resumed>) = 0 [pid 11509] <... set_robust_list resumed>) = 0 [pid 11508] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./535/cgroup.cpu", [pid 11509] chdir("./531") = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./519/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./535/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11508] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./519/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./519/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./535/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11510 attached [pid 11509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11508] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] unlink("./535/binderfs" [pid 5047] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] getdents64(3, [pid 11509] <... prctl resumed>) = 0 [pid 11510] set_robust_list(0x555556ac56a0, 24 [pid 11508] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11509] setpgid(0, 0 [pid 11508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11509] <... setpgid resumed>) = 0 [pid 11510] <... set_robust_list resumed>) = 0 [pid 5049] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 11510] chdir("./548" [pid 11508] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5045] <... close resumed>) = 0 [pid 11510] <... chdir resumed>) = 0 [pid 11509] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5049] newfstatat(AT_FDCWD, "./535/cgroup", [pid 5047] newfstatat(3, "", [pid 5045] rmdir("./519" [pid 11510] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11510] <... prctl resumed>) = 0 [pid 5049] unlink("./535/cgroup" [pid 11509] <... symlink resumed>) = 0 [pid 11508] write(3, "1000", 4 [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11510] setpgid(0, 0) = 0 [pid 11510] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11508] <... write resumed>) = 4 [pid 5049] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] mkdir("./520", 0777 [pid 11509] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11508] close(3 [pid 11509] <... symlink resumed>) = 0 [pid 11508] <... close resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1098 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 11509] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11508] symlink("/dev/binderfs", "./binderfs" [pid 5049] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11508] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 11508] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./535/blkio.bfq.io_wait_time_recursive" [pid 11510] <... symlink resumed>) = 0 [pid 11509] <... symlink resumed>) = 0 [pid 11508] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] unlink("./532/cgroup.cpu" [pid 11508] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11510] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11508] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11511 attached [pid 11510] <... symlink resumed>) = 0 [pid 11509] <... openat resumed>) = 3 [pid 11508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11508] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11511] set_robust_list(0x555556ac56a0, 24 [pid 5049] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1042 [pid 11511] <... set_robust_list resumed>) = 0 [pid 11508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11511] chdir("./520" [pid 11510] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11509] write(3, "1000", 4 [pid 11508] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] unlink("./535/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./532/binderfs", [pid 11511] <... chdir resumed>) = 0 [pid 11510] <... symlink resumed>) = 0 [pid 11509] <... write resumed>) = 4 [pid 11511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11511] setpgid(0, 0 [pid 11510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11509] close(3 [pid 11508] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] unlink("./532/binderfs" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11511] <... setpgid resumed>) = 0 [pid 11509] <... close resumed>) = 0 [pid 11508] <... mprotect resumed>) = 0 [pid 5049] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 11511] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11510] <... openat resumed>) = 3 [pid 11509] symlink("/dev/binderfs", "./binderfs" [pid 11510] write(3, "1000", 4 [pid 11509] <... symlink resumed>) = 0 [pid 11508] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11511] <... symlink resumed>) = 0 [pid 11510] <... write resumed>) = 4 [pid 11509] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11508] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] rmdir("./535" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11511] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11509] <... futex resumed>) = 0 [pid 11508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11511] <... symlink resumed>) = 0 [pid 11509] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... rmdir resumed>) = 0 [pid 11509] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11509] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11511] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11511] <... symlink resumed>) = 0 [pid 11509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] newfstatat(AT_FDCWD, "./532/cgroup", [pid 11510] close(3 [pid 5049] mkdir("./536", 0777 [pid 11510] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11510] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 11512 attached [pid 11511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11509] <... mmap resumed>) = 0x7f504ff5f000 [pid 11512] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11511] <... openat resumed>) = 3 [pid 11510] <... symlink resumed>) = 0 [pid 11509] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11512] <... rseq resumed>) = 0 [pid 11511] write(3, "1000", 4 [pid 11509] <... mprotect resumed>) = 0 [pid 11508] <... clone3 resumed> => {parent_tid=[1100]}, 88) = 1100 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] unlink("./532/cgroup" [pid 11512] set_robust_list(0x7f504ff7f9a0, 24 [pid 11511] <... write resumed>) = 4 [pid 11510] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11509] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11508] rt_sigprocmask(SIG_SETMASK, [], [pid 11512] <... set_robust_list resumed>) = 0 [pid 11511] close(3 [pid 11508] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11512] rt_sigprocmask(SIG_SETMASK, [], [pid 11508] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11512] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11511] <... close resumed>) = 0 [pid 11509] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11508] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11512] open(".", O_RDONLY [pid 11511] symlink("/dev/binderfs", "./binderfs" [pid 11509] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11512] <... open resumed>) = 3 [pid 11511] <... symlink resumed>) = 0 [pid 11510] <... futex resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11513 attached [pid 11512] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11511] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11510] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 11511] <... futex resumed>) = 0 [pid 11510] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11513] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11512] <... futex resumed>) = 1 [pid 11511] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11509] <... clone3 resumed> => {parent_tid=[1065]}, 88) = 1065 [pid 11508] <... futex resumed>) = 0 [pid 11513] <... rseq resumed>) = 0 [pid 11512] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11511] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11510] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11508] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 11513] set_robust_list(0x7f504ff7f9a0, 24 [pid 11512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11511] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11509] rt_sigprocmask(SIG_SETMASK, [], [pid 11513] <... set_robust_list resumed>) = 0 [pid 11512] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11511] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11513] rt_sigprocmask(SIG_SETMASK, [], [pid 11512] <... fcntl resumed>) = 0 [pid 11511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11510] <... mmap resumed>) = 0x7f504ff5f000 [pid 11509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11514 attached [pid 11513] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11512] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11511] <... mmap resumed>) = 0x7f504ff5f000 [pid 11510] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11509] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11508] <... futex resumed>) = 0 [pid 11514] set_robust_list(0x555556ac56a0, 24 [pid 11513] open(".", O_RDONLY [pid 11512] <... futex resumed>) = 0 [pid 11511] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11510] <... mprotect resumed>) = 0 [pid 11509] <... futex resumed>) = 0 [pid 11508] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1074 [pid 5047] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11509] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11508] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11508] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11511] <... mprotect resumed>) = 0 [pid 11508] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 11514] <... set_robust_list resumed>) = 0 [pid 11510] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11508] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11510] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11514] chdir("./536") = 0 [pid 11513] <... open resumed>) = 3 [pid 11512] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11511] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] unlink("./532/cgroup.net" [pid 11514] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11513] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11512] <... openat resumed>) = 4 [pid 11511] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 11515 attached [pid 11514] <... prctl resumed>) = 0 [pid 11511] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11515] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11515] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11515] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... unlink resumed>) = 0 [pid 11515] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11514] setpgid(0, 0 [pid 11515] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 11516 attached [pid 11514] <... setpgid resumed>) = 0 [pid 11516] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11514] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11513] <... futex resumed>) = 1 [pid 11512] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11511] <... clone3 resumed> => {parent_tid=[1043]}, 88) = 1043 [pid 11510] <... clone3 resumed> => {parent_tid=[1099]}, 88) = 1099 [pid 11509] <... futex resumed>) = 0 [pid 5047] getdents64(3, [pid 11516] <... rseq resumed>) = 0 [pid 11514] <... symlink resumed>) = 0 [pid 11513] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11511] rt_sigprocmask(SIG_SETMASK, [], [pid 11510] rt_sigprocmask(SIG_SETMASK, [], [pid 11509] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11514] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11512] +++ killed by SIGIO +++ [pid 11511] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11510] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11509] <... futex resumed>) = 0 [pid 5047] close(3 [pid 11513] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11511] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11510] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11516] set_robust_list(0x7f504ff7f9a0, 24 [pid 11508] <... futex resumed>) = ? [pid 11516] <... set_robust_list resumed>) = 0 [pid 11515] <... futex resumed>) = 0 [pid 11514] <... symlink resumed>) = 0 [pid 11513] <... fcntl resumed>) = 0 [pid 11511] <... futex resumed>) = 0 [pid 11510] <... futex resumed>) = 1 [pid 11509] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... close resumed>) = 0 [pid 11516] rt_sigprocmask(SIG_SETMASK, [], [pid 11515] open(".", O_RDONLY [pid 11514] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11513] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11511] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11510] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11509] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] rmdir("./532" [pid 11516] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11515] <... open resumed>) = 3 [pid 11514] <... symlink resumed>) = 0 [pid 11513] <... futex resumed>) = 0 [pid 11509] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... rmdir resumed>) = 0 [pid 11516] open(".", O_RDONLY [pid 11514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11509] <... futex resumed>) = 0 [pid 11516] <... open resumed>) = 3 [pid 11516] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11515] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11514] <... openat resumed>) = 3 [pid 11513] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11509] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11508] +++ killed by SIGIO +++ [pid 5047] mkdir("./533", 0777 [pid 11516] <... futex resumed>) = 1 [pid 11515] <... futex resumed>) = 1 [pid 11514] write(3, "1000", 4 [pid 11513] <... openat resumed>) = 4 [pid 11511] <... futex resumed>) = 0 [pid 11510] <... futex resumed>) = 0 [pid 11509] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1099, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11516] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11515] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11514] <... write resumed>) = 4 [pid 11513] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11511] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11510] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11509] restart_syscall(<... resuming interrupted futex ...> [pid 5047] <... mkdir resumed>) = 0 [pid 11516] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11514] close(3 [pid 11511] <... futex resumed>) = 0 [pid 11510] <... futex resumed>) = 0 [pid 11509] <... restart_syscall resumed>) = ? [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11516] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11515] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11514] <... close resumed>) = 0 [pid 11513] +++ killed by SIGIO +++ [pid 11511] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11510] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11516] <... fcntl resumed>) = 0 [pid 5050] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11514] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11517 attached [pid 5050] newfstatat(3, "", [pid 11516] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11516] <... futex resumed>) = 0 [pid 11515] <... fcntl resumed>) = 0 [pid 11514] <... symlink resumed>) = 0 [pid 11517] set_robust_list(0x555556ac56a0, 24 [pid 11516] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11515] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11514] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11517] <... set_robust_list resumed>) = 0 [pid 11515] <... futex resumed>) = 1 [pid 11514] <... futex resumed>) = 0 [pid 11511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11510] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11517] chdir("./533" [pid 11515] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11514] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11511] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11510] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1068 [pid 11517] <... chdir resumed>) = 0 [pid 11516] <... futex resumed>) = 0 [pid 11515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11514] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11511] <... futex resumed>) = 1 [pid 11510] <... futex resumed>) = 0 [pid 11509] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11516] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11515] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11511] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11510] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./548/cgroup.cpu", [pid 11517] <... prctl resumed>) = 0 [pid 11516] <... openat resumed>) = 4 [pid 11515] <... openat resumed>) = 4 [pid 11514] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11511] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1064, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11517] setpgid(0, 0 [pid 11516] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11515] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11510] <... futex resumed>) = 9 [pid 5050] unlink("./548/cgroup.cpu" [pid 11517] <... setpgid resumed>) = 0 [pid 11514] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11517] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11516] +++ killed by SIGIO +++ [pid 11511] +++ killed by SIGIO +++ [pid 11514] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... restart_syscall resumed>) = 0 [pid 5050] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11514] <... mprotect resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./548/binderfs", [pid 11514] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11517] <... symlink resumed>) = 0 [pid 11514] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./548/binderfs" [pid 5046] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1042, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11517] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11518 attached [pid 11517] <... symlink resumed>) = 0 [pid 11515] +++ killed by SIGIO +++ [pid 11510] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 11518] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1098, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11514] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 11518] <... rseq resumed>) = 0 [pid 11517] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11518] set_robust_list(0x7f504ff7f9a0, 24 [pid 11514] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... restart_syscall resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./548/cgroup", [pid 5046] <... openat resumed>) = 3 [pid 11518] <... set_robust_list resumed>) = 0 [pid 11514] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5051] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./548/cgroup" [pid 11518] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11517] <... symlink resumed>) = 0 [pid 11514] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 11518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11514] <... futex resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11518] open(".", O_RDONLY [pid 5051] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11518] <... open resumed>) = 3 [pid 11514] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 5050] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", [pid 5046] getdents64(3, [pid 5045] umount2("./520", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11518] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11517] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11518] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11518] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11517] write(3, "1000", 4 [pid 11514] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11517] <... write resumed>) = 4 [pid 11514] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 11517] close(3 [pid 11514] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11517] <... close resumed>) = 0 [pid 5051] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 5045] newfstatat(3, "", [pid 11518] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11517] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11518] <... fcntl resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11518] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 11518] <... futex resumed>) = 1 [pid 11514] <... futex resumed>) = 0 [pid 11518] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11514] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11514] <... futex resumed>) = 0 [pid 11518] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11517] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./548/cgroup.cpu", [pid 5046] unlink("./531/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11518] <... openat resumed>) = 4 [pid 11517] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11514] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 11517] <... futex resumed>) = 0 [pid 5051] unlink("./548/cgroup.cpu" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11517] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./548/cgroup.net" [pid 5046] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11517] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./520/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11518] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11517] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./531/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11517] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./520/cgroup.cpu", [pid 11517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11514] <... futex resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./548/binderfs", [pid 5050] getdents64(3, [pid 5046] unlink("./531/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11518] +++ killed by SIGIO +++ [pid 11517] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./520/cgroup.cpu" [pid 11517] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./548/binderfs" [pid 11517] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11517] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./531/cgroup", [pid 11514] +++ killed by SIGIO +++ [pid 5050] close(3 [pid 5051] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... close resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1074, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./520/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11517] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./548" [pid 5046] unlink("./531/cgroup" [pid 11517] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./548/cgroup", [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] mkdir("./549", 0777 [pid 5046] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./520/binderfs", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11519 attached [pid 11517] <... clone3 resumed> => {parent_tid=[1069]}, 88) = 1069 [pid 5051] unlink("./548/cgroup" [pid 5050] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11519] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... unlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./520/binderfs" [pid 5046] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11519] <... rseq resumed>) = 0 [pid 11517] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11519] set_robust_list(0x7f504ff7f9a0, 24 [pid 11517] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11517] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", [pid 11517] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11520 attached [pid 11519] <... set_robust_list resumed>) = 0 [pid 11517] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./520/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11520] set_robust_list(0x555556ac56a0, 24 [pid 11519] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1101 [pid 5049] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11519] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] newfstatat(3, "", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11520] <... set_robust_list resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./520/cgroup", [pid 11520] chdir("./549" [pid 11519] open(".", O_RDONLY [pid 5051] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5046] unlink("./531/cgroup.net" [pid 5051] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11520] <... chdir resumed>) = 0 [pid 5045] unlink("./520/cgroup" [pid 11519] <... open resumed>) = 3 [pid 11520] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11519] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11520] <... prctl resumed>) = 0 [pid 11519] <... futex resumed>) = 1 [pid 11517] <... futex resumed>) = 0 [pid 11520] setpgid(0, 0 [pid 11519] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11517] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./548/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./520/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11520] <... setpgid resumed>) = 0 [pid 11519] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11517] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./536/cgroup.cpu", [pid 5046] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11520] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11519] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11517] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./520/blkio.bfq.io_wait_time_recursive", [pid 11519] <... fcntl resumed>) = 0 [pid 5046] rmdir("./531" [pid 5051] getdents64(3, [pid 5049] unlink("./536/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11519] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11520] <... symlink resumed>) = 0 [pid 11519] <... futex resumed>) = 1 [pid 11517] <... futex resumed>) = 0 [pid 5051] close(3 [pid 5045] unlink("./520/blkio.bfq.io_wait_time_recursive" [pid 11520] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11519] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11517] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5046] mkdir("./532", 0777 [pid 11519] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11517] <... futex resumed>) = 0 [pid 11520] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] rmdir("./548" [pid 5045] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./536/binderfs", [pid 11520] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11519] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11517] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... rmdir resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] umount2("./520/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] mkdir("./549", 0777 [pid 11520] <... symlink resumed>) = 0 [pid 11519] <... openat resumed>) = 4 [pid 11517] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] unlink("./536/binderfs" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11519] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11517] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./520/cgroup.net", [pid 11520] <... openat resumed>) = 3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11520] write(3, "1000", 4 [pid 11517] <... restart_syscall resumed>) = ? [pid 5049] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11520] <... write resumed>) = 4 [pid 11519] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11520] close(3 [pid 5049] newfstatat(AT_FDCWD, "./536/cgroup", [pid 11520] <... close resumed>) = 0 [pid 11520] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./520/cgroup.net" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1100 ./strace-static-x86_64: Process 11521 attached [pid 11520] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11522 attached [pid 11521] set_robust_list(0x555556ac56a0, 24 [pid 11520] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./536/cgroup" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1066 [pid 11522] set_robust_list(0x555556ac56a0, 24 [pid 11520] <... futex resumed>) = 0 [pid 11517] +++ killed by SIGIO +++ [pid 5045] getdents64(3, [pid 11522] <... set_robust_list resumed>) = 0 [pid 11521] <... set_robust_list resumed>) = 0 [pid 11520] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11522] chdir("./532" [pid 11521] chdir("./549" [pid 11520] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1068, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] close(3 [pid 11522] <... chdir resumed>) = 0 [pid 11520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11522] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... close resumed>) = 0 [pid 11520] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11522] <... prctl resumed>) = 0 [pid 11521] <... chdir resumed>) = 0 [pid 11520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./520" [pid 11522] setpgid(0, 0 [pid 11521] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11520] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11521] <... prctl resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11522] <... setpgid resumed>) = 0 [pid 11521] setpgid(0, 0 [pid 11520] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11522] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11521] <... setpgid resumed>) = 0 [pid 11520] <... mprotect resumed>) = 0 [pid 5049] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 5047] <... openat resumed>) = 3 [pid 5045] <... rmdir resumed>) = 0 [pid 11522] <... symlink resumed>) = 0 [pid 11521] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] newfstatat(3, "", [pid 11522] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11521] <... symlink resumed>) = 0 [pid 11520] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] mkdir("./521", 0777 [pid 11520] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11521] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11522] <... symlink resumed>) = 0 [pid 11521] <... symlink resumed>) = 0 [pid 11520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5045] <... mkdir resumed>) = 0 [pid 11522] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11521] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11522] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11523 attached [pid 11522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11521] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./536/cgroup.net", [pid 5047] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11523] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11520] <... clone3 resumed> => {parent_tid=[1102]}, 88) = 1102 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11523] <... rseq resumed>) = 0 [pid 11521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 11523] set_robust_list(0x7f504ff7f9a0, 24 [pid 11522] <... openat resumed>) = 3 [pid 11521] <... openat resumed>) = 3 [pid 11520] rt_sigprocmask(SIG_SETMASK, [], [pid 11523] <... set_robust_list resumed>) = 0 [pid 11520] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11523] rt_sigprocmask(SIG_SETMASK, [], [pid 11520] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11522] write(3, "1000", 4 [pid 11523] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11521] write(3, "1000", 4) = 4 [pid 11521] close(3 [pid 11520] <... futex resumed>) = 0 [pid 5049] unlink("./536/cgroup.net" [pid 11522] <... write resumed>) = 4 [pid 11521] <... close resumed>) = 0 [pid 11520] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./533/cgroup.cpu"./strace-static-x86_64: Process 11524 attached [pid 11523] open(".", O_RDONLY [pid 11522] close(3 [pid 11521] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1044 [pid 11524] set_robust_list(0x555556ac56a0, 24 [pid 11523] <... open resumed>) = 3 [pid 11522] <... close resumed>) = 0 [pid 11521] <... symlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 11524] <... set_robust_list resumed>) = 0 [pid 11523] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11522] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11523] <... futex resumed>) = 1 [pid 11524] chdir("./521" [pid 11523] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11521] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11520] <... futex resumed>) = 0 [pid 5049] close(3 [pid 11524] <... chdir resumed>) = 0 [pid 11522] <... symlink resumed>) = 0 [pid 11521] <... futex resumed>) = 0 [pid 11520] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11524] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11523] <... futex resumed>) = 0 [pid 11522] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11521] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11520] <... futex resumed>) = 1 [pid 5049] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./533/binderfs", [pid 11524] <... prctl resumed>) = 0 [pid 11523] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11522] <... futex resumed>) = 0 [pid 11521] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11520] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./536" [pid 11524] setpgid(0, 0 [pid 11523] <... fcntl resumed>) = 0 [pid 11522] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11521] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11524] <... setpgid resumed>) = 0 [pid 11523] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11522] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11521] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11523] <... futex resumed>) = 1 [pid 11522] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11520] <... futex resumed>) = 0 [pid 11521] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] unlink("./533/binderfs" [pid 11524] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11523] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11522] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11521] <... mmap resumed>) = 0x7f504ff5f000 [pid 11520] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] mkdir("./537", 0777 [pid 5047] <... unlink resumed>) = 0 [pid 11524] <... symlink resumed>) = 0 [pid 11523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11522] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11521] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11520] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11523] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11520] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11524] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu"./strace-static-x86_64: Process 11525 attached ) = 0 [pid 11523] <... openat resumed>) = 4 [pid 11522] <... mmap resumed>) = 0x7f504ff5f000 [pid 11521] <... mprotect resumed>) = 0 [pid 11520] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11524] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11523] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11525] set_robust_list(0x555556ac56a0, 24 [pid 11522] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11521] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11520] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1076 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11525] <... set_robust_list resumed>) = 0 [pid 11524] <... symlink resumed>) = 0 [pid 11522] <... mprotect resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./533/cgroup", [pid 11525] chdir("./537" [pid 11524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11522] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11521] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11521] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11526 attached [pid 11526] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11521] <... clone3 resumed> => {parent_tid=[1101]}, 88) = 1101 [pid 11526] set_robust_list(0x7f504ff7f9a0, 24 [pid 11521] rt_sigprocmask(SIG_SETMASK, [], [pid 11526] <... set_robust_list resumed>) = 0 [pid 11521] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11521] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./533/cgroup" [pid 11526] open(".", O_RDONLY [pid 11525] <... chdir resumed>) = 0 [pid 11524] <... openat resumed>) = 3 [pid 11522] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11526] <... open resumed>) = 3 [pid 11521] <... futex resumed>) = 0 [pid 11526] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11521] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11526] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11525] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11522] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11525] <... prctl resumed>) = 0 [pid 11524] write(3, "1000", 4 [pid 11521] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11526] <... futex resumed>) = 0 [pid 11521] <... futex resumed>) = 1 [pid 11526] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11521] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11527 attached [pid 11526] <... fcntl resumed>) = 0 [pid 11525] setpgid(0, 0 [pid 11527] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11526] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11527] <... rseq resumed>) = 0 [pid 11526] <... futex resumed>) = 1 [pid 11521] <... futex resumed>) = 0 [pid 11527] set_robust_list(0x7f504ff7f9a0, 24 [pid 11526] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11521] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11527] <... set_robust_list resumed>) = 0 [pid 11526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11527] rt_sigprocmask(SIG_SETMASK, [], [pid 11526] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11521] <... futex resumed>) = 0 [pid 11527] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11525] <... setpgid resumed>) = 0 [pid 11524] <... write resumed>) = 4 [pid 11523] +++ killed by SIGIO +++ [pid 11522] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 11520] +++ killed by SIGIO +++ [pid 5047] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11527] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11526] <... openat resumed>) = 4 [pid 11521] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11526] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11526] <... futex resumed>) = ? [pid 5047] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./533/blkio.bfq.io_wait_time_recursive") = 0 [pid 11524] close(3 [pid 11525] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11524] <... close resumed>) = 0 [pid 11524] symlink("/dev/binderfs", "./binderfs" [pid 5047] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11525] <... symlink resumed>) = 0 [pid 11524] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./533/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11524] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./533/cgroup.net" [pid 11526] +++ killed by SIGIO +++ [pid 11524] <... futex resumed>) = 0 [pid 11522] rt_sigprocmask(SIG_SETMASK, [], [pid 11521] +++ killed by SIGIO +++ [pid 11525] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 11524] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11522] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1100, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1101, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11524] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11522] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11527] <... futex resumed>) = 0 [pid 11522] <... futex resumed>) = 1 [pid 11524] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] getdents64(3, [pid 11527] open(".", O_RDONLY [pid 11524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11522] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11525] <... symlink resumed>) = 0 [pid 11527] <... open resumed>) = 3 [pid 11524] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 11527] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11525] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11524] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... close resumed>) = 0 [pid 11527] <... futex resumed>) = 1 [pid 11524] <... mprotect resumed>) = 0 [pid 11522] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5047] rmdir("./533" [pid 11527] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11524] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11525] <... symlink resumed>) = 0 [pid 11522] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] newfstatat(3, "", [pid 5047] <... rmdir resumed>) = 0 [pid 11527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11522] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11527] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11522] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11524] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11525] <... openat resumed>) = 3 [pid 5047] mkdir("./534", 0777./strace-static-x86_64: Process 11528 attached [pid 11527] <... fcntl resumed>) = 0 [pid 11525] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, [pid 5047] <... mkdir resumed>) = 0 [pid 11528] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11527] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11525] <... write resumed>) = 4 [pid 11524] <... clone3 resumed> => {parent_tid=[1045]}, 88) = 1045 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] getdents64(3, [pid 11528] <... rseq resumed>) = 0 [pid 11527] <... futex resumed>) = 1 [pid 11525] close(3 [pid 11524] rt_sigprocmask(SIG_SETMASK, [], [pid 11522] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11529 attached [pid 11528] set_robust_list(0x7f504ff7f9a0, 24 [pid 11527] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11525] <... close resumed>) = 0 [pid 11524] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11522] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11529] set_robust_list(0x555556ac56a0, 24 [pid 11528] <... set_robust_list resumed>) = 0 [pid 11527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11525] symlink("/dev/binderfs", "./binderfs" [pid 11524] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11522] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./549/cgroup.cpu", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1070 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11529] <... set_robust_list resumed>) = 0 [pid 11528] rt_sigprocmask(SIG_SETMASK, [], [pid 11527] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11524] <... futex resumed>) = 0 [pid 11522] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11529] chdir("./534" [pid 11528] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11525] <... symlink resumed>) = 0 [pid 11524] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11529] <... chdir resumed>) = 0 [pid 11528] open(".", O_RDONLY [pid 11529] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11528] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./549/cgroup.cpu", [pid 11529] <... prctl resumed>) = 0 [pid 11529] setpgid(0, 0) = 0 [pid 11528] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11527] <... openat resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11525] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./549/cgroup.cpu" [pid 5050] unlink("./549/cgroup.cpu" [pid 11529] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11528] <... futex resumed>) = 1 [pid 11527] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11525] <... futex resumed>) = 0 [pid 11524] <... futex resumed>) = 0 [pid 11522] <... futex resumed>) = 0 [pid 11529] <... symlink resumed>) = 0 [pid 11528] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11525] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11524] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11529] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11528] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11524] <... futex resumed>) = 0 [pid 11525] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11529] <... symlink resumed>) = 0 [pid 11528] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11524] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11529] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11528] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11529] <... symlink resumed>) = 0 [pid 11528] <... futex resumed>) = 0 [pid 11524] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11528] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11524] <... futex resumed>) = 0 [pid 11529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11528] <... openat resumed>) = 4 [pid 11527] +++ killed by SIGIO +++ [pid 11525] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11522] +++ killed by SIGIO +++ [pid 11524] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11529] <... openat resumed>) = 3 [pid 11525] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11529] write(3, "1000", 4 [pid 11528] +++ killed by SIGIO +++ [pid 11525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(AT_FDCWD, "./549/binderfs", [pid 5050] newfstatat(AT_FDCWD, "./549/binderfs", [pid 11529] <... write resumed>) = 4 [pid 11525] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11529] close(3 [pid 11525] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./549/binderfs" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1066, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11529] <... close resumed>) = 0 [pid 11525] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11529] symlink("/dev/binderfs", "./binderfs" [pid 11525] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11525] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11529] <... symlink resumed>) = 0 [pid 11525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./549/cgroup", [pid 5046] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11530 attached [pid 11529] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./549/binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11530] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11529] <... futex resumed>) = 0 [pid 11525] <... clone3 resumed> => {parent_tid=[1077]}, 88) = 1077 [pid 5050] unlink("./549/cgroup" [pid 5046] <... openat resumed>) = 3 [pid 11530] <... rseq resumed>) = 0 [pid 11529] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11525] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11530] set_robust_list(0x7f504ff7f9a0, 24 [pid 11529] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11525] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11530] <... set_robust_list resumed>) = 0 [pid 11525] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11530] rt_sigprocmask(SIG_SETMASK, [], [pid 11525] <... futex resumed>) = 0 [pid 5050] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11530] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11525] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11530] open(".", O_RDONLY [pid 11529] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11530] <... open resumed>) = 3 [pid 5051] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 5046] getdents64(3, [pid 11530] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11529] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11530] <... futex resumed>) = 1 [pid 11529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11525] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./549/cgroup", [pid 5050] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11530] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11525] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11529] <... mmap resumed>) = 0x7f504ff5f000 [pid 11524] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11530] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11525] <... futex resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1044, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 11530] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11525] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11530] <... fcntl resumed>) = 0 [pid 5050] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11530] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./521", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11530] <... futex resumed>) = 1 [pid 11525] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./549/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11530] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11525] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11530] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11529] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11525] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11530] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11525] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./549/cgroup" [pid 5050] unlink("./549/cgroup.net" [pid 5045] <... openat resumed>) = 3 [pid 11530] <... openat resumed>) = 4 [pid 11529] <... mprotect resumed>) = 0 [pid 11525] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 5045] newfstatat(3, "", [pid 11530] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11529] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11529] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./532/cgroup.cpu" [pid 11530] +++ killed by SIGIO +++ [pid 11529] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 5050] getdents64(3, [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11531 attached [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11531] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11529] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11531] <... rseq resumed>) = 0 [pid 11529] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 5046] newfstatat(AT_FDCWD, "./532/binderfs", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11531] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5045] umount2("./521/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11531] <... set_robust_list resumed>) = 0 [pid 11529] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11531] rt_sigprocmask(SIG_SETMASK, [], [pid 11529] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./549" [pid 5045] newfstatat(AT_FDCWD, "./521/cgroup.cpu", [pid 11531] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11529] <... futex resumed>) = 0 [pid 5051] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./532/binderfs" [pid 11531] open(".", O_RDONLY [pid 11529] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11531] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./549/cgroup.net", [pid 5046] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11531] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./521/cgroup.cpu" [pid 11531] <... futex resumed>) = 1 [pid 11529] <... futex resumed>) = 0 [pid 11531] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11529] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./549/cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./532/cgroup", [pid 11531] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11529] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11531] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11529] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11525] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5050] mkdir("./550", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11531] <... fcntl resumed>) = 0 [pid 5051] getdents64(3, [pid 11531] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1076, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] unlink("./532/cgroup" [pid 11531] <... futex resumed>) = 1 [pid 11529] <... futex resumed>) = 0 [pid 5049] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11531] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11529] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11531] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11529] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11531] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11529] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./549" [pid 5049] <... openat resumed>) = 3 [pid 5046] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11531] <... openat resumed>) = 4 [pid 5051] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11529] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 11529] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 5050] <... mkdir resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./521/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] mkdir("./550", 0777 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./537/cgroup.cpu" [pid 5046] unlink("./532/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./521/binderfs", ./strace-static-x86_64: Process 11532 attached [pid 11532] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./521/binderfs" [pid 11532] <... set_robust_list resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11532] chdir("./550" [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1103 [pid 5049] newfstatat(AT_FDCWD, "./537/binderfs", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./521/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11532] <... chdir resumed>) = 0 [pid 5049] unlink("./537/binderfs" [pid 5046] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./521/cgroup", [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11532] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... unlink resumed>) = 0 [pid 5046] rmdir("./532" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11532] <... prctl resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] unlink("./521/cgroup" [pid 5049] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11532] setpgid(0, 0 [pid 5049] newfstatat(AT_FDCWD, "./537/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11532] <... setpgid resumed>) = 0 [pid 11532] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] unlink("./537/cgroup" [pid 5046] mkdir("./533", 0777 [pid 11532] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./521/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11533 attached [pid 5049] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 11533] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1102 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./521/blkio.bfq.io_wait_time_recursive", [pid 11533] <... set_robust_list resumed>) = 0 [pid 11532] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11533] chdir("./550" [pid 11532] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11531] +++ killed by SIGIO +++ [pid 11529] +++ killed by SIGIO +++ [pid 5049] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./521/blkio.bfq.io_wait_time_recursive" [pid 11533] <... chdir resumed>) = 0 [pid 11532] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11533] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11532] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1070, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... unlink resumed>) = 0 [pid 11533] <... prctl resumed>) = 0 [pid 11533] setpgid(0, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11533] <... setpgid resumed>) = 0 [pid 5047] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11533] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] unlink("./537/cgroup.net" [pid 11532] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] umount2("./521/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11534 attached [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1068 [pid 11534] set_robust_list(0x555556ac56a0, 24 [pid 11533] <... symlink resumed>) = 0 [pid 11532] write(3, "1000", 4 [pid 5049] getdents64(3, [pid 5047] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./521/cgroup.net", [pid 11532] <... write resumed>) = 4 [pid 11532] close(3 [pid 11534] <... set_robust_list resumed>) = 0 [pid 11533] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11532] <... close resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11534] chdir("./533" [pid 11533] <... symlink resumed>) = 0 [pid 11532] symlink("/dev/binderfs", "./binderfs" [pid 5049] close(3 [pid 5047] getdents64(3, [pid 11534] <... chdir resumed>) = 0 [pid 11533] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11532] <... symlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11534] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11533] <... symlink resumed>) = 0 [pid 5045] unlink("./521/cgroup.net" [pid 11534] <... prctl resumed>) = 0 [pid 11532] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./537" [pid 11532] <... futex resumed>) = 0 [pid 11534] setpgid(0, 0 [pid 11533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11532] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... rmdir resumed>) = 0 [pid 5047] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11534] <... setpgid resumed>) = 0 [pid 11533] <... openat resumed>) = 3 [pid 11532] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11534] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11533] write(3, "1000", 4 [pid 11532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] mkdir("./538", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11533] <... write resumed>) = 4 [pid 11532] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./534/cgroup.cpu", [pid 11534] <... symlink resumed>) = 0 [pid 11533] close(3 [pid 11532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11532] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] unlink("./534/cgroup.cpu" [pid 11534] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11533] <... close resumed>) = 0 [pid 11533] symlink("/dev/binderfs", "./binderfs" [pid 11532] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] close(3) = 0 [pid 5045] rmdir("./521" [pid 11532] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 11535 attached [pid 11535] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1078 [pid 11535] chdir("./538") = 0 [pid 11535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11535] setpgid(0, 0) = 0 [pid 11535] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11536 attached [pid 11536] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11532] <... clone3 resumed> => {parent_tid=[1104]}, 88) = 1104 [pid 11536] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11536] rt_sigprocmask(SIG_SETMASK, [], [pid 11532] rt_sigprocmask(SIG_SETMASK, [], [pid 11536] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11532] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11536] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11532] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11536] <... futex resumed>) = 0 [pid 11532] <... futex resumed>) = 1 [pid 11532] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11536] open(".", O_RDONLY) = 3 [pid 11536] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11536] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11532] <... futex resumed>) = 0 [pid 11532] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11536] <... futex resumed>) = 0 [pid 11532] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11536] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11536] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11536] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11532] <... futex resumed>) = 0 [pid 11532] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11536] <... futex resumed>) = 0 [pid 11532] <... futex resumed>) = 1 [pid 11536] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11532] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11534] <... symlink resumed>) = 0 [pid 11533] <... symlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11534] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11533] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11533] <... futex resumed>) = 0 [pid 11535] <... symlink resumed>) = 0 [pid 11533] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11535] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11534] <... symlink resumed>) = 0 [pid 11533] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./534/binderfs", [pid 11536] <... openat resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11536] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11535] <... symlink resumed>) = 0 [pid 11534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11533] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] unlink("./534/binderfs" [pid 5045] mkdir("./522", 0777 [pid 11533] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11534] <... openat resumed>) = 3 [pid 11533] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11535] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11533] <... mmap resumed>) = 0x7f504ff5f000 [pid 11532] <... futex resumed>) = ? [pid 11536] +++ killed by SIGIO +++ [pid 11534] write(3, "1000", 4) = 4 [pid 11534] close(3) = 0 [pid 11534] symlink("/dev/binderfs", "./binderfs" [pid 11535] <... symlink resumed>) = 0 [pid 11534] <... symlink resumed>) = 0 [pid 11533] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11532] +++ killed by SIGIO +++ [pid 5047] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11534] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1103, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11534] <... futex resumed>) = 0 [pid 11534] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11535] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./534/cgroup", [pid 11533] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11537 attached [pid 11535] write(3, "1000", 4 [pid 11533] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] unlink("./534/cgroup" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1046 [pid 11537] set_robust_list(0x555556ac56a0, 24 [pid 11535] <... write resumed>) = 4 [pid 11533] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11537] <... set_robust_list resumed>) = 0 [pid 11535] close(3 [pid 11534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11533] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11538 attached [pid 11537] chdir("./522" [pid 11535] <... close resumed>) = 0 [pid 11534] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11538] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11537] <... chdir resumed>) = 0 [pid 11535] symlink("/dev/binderfs", "./binderfs" [pid 11534] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11533] <... clone3 resumed> => {parent_tid=[1103]}, 88) = 1103 [pid 5050] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11538] <... rseq resumed>) = 0 [pid 11537] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11535] <... symlink resumed>) = 0 [pid 11534] <... mprotect resumed>) = 0 [pid 11533] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 11538] set_robust_list(0x7f504ff7f9a0, 24 [pid 11537] <... prctl resumed>) = 0 [pid 11535] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11534] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11533] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11538] <... set_robust_list resumed>) = 0 [pid 11537] setpgid(0, 0 [pid 11535] <... futex resumed>) = 0 [pid 11534] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11533] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11538] rt_sigprocmask(SIG_SETMASK, [], [pid 11537] <... setpgid resumed>) = 0 [pid 11535] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11533] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] unlink("./534/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11539 attached [pid 11538] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11537] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11535] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11533] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 11539] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11538] open(".", O_RDONLY [pid 11537] <... symlink resumed>) = 0 [pid 11535] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11534] <... clone3 resumed> => {parent_tid=[1069]}, 88) = 1069 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11539] <... rseq resumed>) = 0 [pid 11538] <... open resumed>) = 3 [pid 11537] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11535] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11534] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11534] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11534] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11534] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./550/cgroup.cpu", [pid 11539] set_robust_list(0x7f504ff7f9a0, 24 [pid 11538] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11537] <... symlink resumed>) = 0 [pid 11535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./534/cgroup.net", [pid 11538] <... futex resumed>) = 1 [pid 11537] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11535] <... mmap resumed>) = 0x7f504ff5f000 [pid 11533] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./550/cgroup.cpu" [pid 11539] <... set_robust_list resumed>) = 0 [pid 11538] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11537] <... symlink resumed>) = 0 [pid 11535] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11533] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./534/cgroup.net" [pid 11539] rt_sigprocmask(SIG_SETMASK, [], [pid 11538] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11535] <... mprotect resumed>) = 0 [pid 11533] <... futex resumed>) = 0 [pid 11539] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11538] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11533] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11539] open(".", O_RDONLY [pid 5050] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11538] <... fcntl resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./550/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11537] <... openat resumed>) = 3 [pid 5050] unlink("./550/binderfs" [pid 11539] <... open resumed>) = 3 [pid 11538] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11537] write(3, "1000", 4 [pid 11535] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] getdents64(3, [pid 11539] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11538] <... futex resumed>) = 1 [pid 11537] <... write resumed>) = 4 [pid 11535] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11533] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11539] <... futex resumed>) = 1 [pid 11538] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11537] close(3 [pid 11535] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11534] <... futex resumed>) = 0 [pid 11533] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] close(3 [pid 11539] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11538] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11537] <... close resumed>) = 0 [pid 11534] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11533] <... futex resumed>) = 0 [pid 5050] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11534] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11534] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./550/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 5050] unlink("./550/cgroup"./strace-static-x86_64: Process 11540 attached [pid 11539] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11538] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11537] symlink("/dev/binderfs", "./binderfs" [pid 11533] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5047] rmdir("./534" [pid 11540] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11538] <... openat resumed>) = 4 [pid 11537] <... symlink resumed>) = 0 [pid 11533] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11535] <... clone3 resumed> => {parent_tid=[1079]}, 88) = 1079 [pid 5047] <... rmdir resumed>) = 0 [pid 11539] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11540] set_robust_list(0x7f504ff7f9a0, 24 [pid 11537] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11535] rt_sigprocmask(SIG_SETMASK, [], [pid 11533] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11539] <... fcntl resumed>) = 0 [pid 5050] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11539] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11535] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11539] <... futex resumed>) = 1 [pid 11534] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11535] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11539] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11534] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11535] <... futex resumed>) = 0 [pid 11539] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11537] <... futex resumed>) = 0 [pid 11534] <... futex resumed>) = 0 [pid 5047] mkdir("./535", 0777 [pid 11535] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11540] <... set_robust_list resumed>) = 0 [pid 11539] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11537] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11534] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 5047] <... mkdir resumed>) = 0 [pid 11540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11537] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11534] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11539] <... openat resumed>) = 4 [pid 11537] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11534] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11537] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11537] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 11537] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 11540] open(".", O_RDONLY [pid 5050] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11540] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./550/cgroup.net", [pid 11539] +++ killed by SIGIO +++ [pid 11537] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11540] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11538] +++ killed by SIGIO +++ [pid 11537] <... mprotect resumed>) = 0 [pid 11533] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11540] <... futex resumed>) = 1 [pid 11537] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./550/cgroup.net"./strace-static-x86_64: Process 11541 attached [pid 11540] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11537] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11535] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11541] set_robust_list(0x555556ac56a0, 24 [pid 11537] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11535] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1102, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1072 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 5050] rmdir("./550") = 0 [pid 11535] <... futex resumed>) = 1 [pid 5051] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11541] <... set_robust_list resumed>) = 0 [pid 11535] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11534] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11537] <... clone3 resumed> => {parent_tid=[1047]}, 88) = 1047 [pid 5051] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11537] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11542 attached [pid 11540] <... futex resumed>) = 0 [pid 11537] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11541] chdir("./535" [pid 5051] <... openat resumed>) = 3 [pid 5050] mkdir("./551", 0777 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1068, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11542] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11541] <... chdir resumed>) = 0 [pid 11540] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11537] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5050] <... mkdir resumed>) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11542] <... rseq resumed>) = 0 [pid 11541] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11540] <... fcntl resumed>) = 0 [pid 11537] <... futex resumed>) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11542] set_robust_list(0x7f504ff7f9a0, 24 [pid 11541] <... prctl resumed>) = 0 [pid 11540] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11537] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11542] <... set_robust_list resumed>) = 0 [pid 11541] setpgid(0, 0 [pid 11540] <... futex resumed>) = 1 [pid 11535] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11542] rt_sigprocmask(SIG_SETMASK, [], [pid 11541] <... setpgid resumed>) = 0 [pid 11540] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11535] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11543 attached [pid 11542] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11541] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11535] <... futex resumed>) = 0 [pid 5051] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11543] set_robust_list(0x555556ac56a0, 24 [pid 11542] open(".", O_RDONLY [pid 11540] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11543] <... set_robust_list resumed>) = 0 [pid 11542] <... open resumed>) = 3 [pid 11541] <... symlink resumed>) = 0 [pid 11540] <... openat resumed>) = 4 [pid 11535] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11542] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11541] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11535] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] newfstatat(AT_FDCWD, "./550/cgroup.cpu", [pid 5046] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11542] <... futex resumed>) = 1 [pid 11537] <... futex resumed>) = 0 [pid 11535] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11542] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11537] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11543] chdir("./551" [pid 11542] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11541] <... symlink resumed>) = 0 [pid 11540] +++ killed by SIGIO +++ [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1105 [pid 11542] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11541] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11537] <... futex resumed>) = 0 [pid 11543] <... chdir resumed>) = 0 [pid 5051] unlink("./550/cgroup.cpu" [pid 11542] <... fcntl resumed>) = 0 [pid 11537] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11542] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... unlink resumed>) = 0 [pid 11543] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11542] <... futex resumed>) = 0 [pid 11541] <... symlink resumed>) = 0 [pid 11537] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(3, "", [pid 11543] <... prctl resumed>) = 0 [pid 11542] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11537] <... futex resumed>) = 0 [pid 5051] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11543] setpgid(0, 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11542] <... openat resumed>) = 4 [pid 11543] <... setpgid resumed>) = 0 [pid 11542] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11541] <... openat resumed>) = 3 [pid 11537] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11535] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 11541] write(3, "1000", 4 [pid 5051] newfstatat(AT_FDCWD, "./550/binderfs", [pid 11541] <... write resumed>) = 4 [pid 11537] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11543] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11542] +++ killed by SIGIO +++ [pid 11541] close(3 [pid 11543] <... symlink resumed>) = 0 [pid 11541] <... close resumed>) = 0 [pid 5051] unlink("./550/binderfs" [pid 5046] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11541] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1078, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11541] <... symlink resumed>) = 0 [pid 5049] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 11543] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11543] <... symlink resumed>) = 0 [pid 11541] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 11541] <... futex resumed>) = 0 [pid 5046] unlink("./533/cgroup.cpu" [pid 11543] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11541] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11537] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11543] <... symlink resumed>) = 0 [pid 11541] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./550/cgroup", [pid 5046] <... unlink resumed>) = 0 [pid 11541] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5046] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1046, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11541] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 5051] unlink("./550/cgroup" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... restart_syscall resumed>) = 0 [pid 11541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] newfstatat(AT_FDCWD, "./533/binderfs", [pid 11543] <... openat resumed>) = 3 [pid 5049] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11541] <... mmap resumed>) = 0x7f504ff5f000 [pid 11543] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11541] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] unlink("./533/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 5045] umount2("./522", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11543] <... write resumed>) = 4 [pid 11541] <... mprotect resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11543] close(3 [pid 11541] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./538/cgroup.cpu" [pid 5046] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11543] <... close resumed>) = 0 [pid 11541] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11543] symlink("/dev/binderfs", "./binderfs" [pid 11541] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11544 attached [pid 11543] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(3, "", [pid 11544] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./538/binderfs", [pid 11544] <... rseq resumed>) = 0 [pid 11541] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./533/cgroup", [pid 11544] set_robust_list(0x7f504ff7f9a0, 24 [pid 11541] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11544] <... set_robust_list resumed>) = 0 [pid 11541] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11543] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11543] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11543] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11544] rt_sigprocmask(SIG_SETMASK, [], [pid 11541] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./538/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 11544] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11543] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11541] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./533/cgroup" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11544] open(".", O_RDONLY [pid 11541] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./550/cgroup.net", [pid 11543] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./522/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11544] <... open resumed>) = 3 [pid 5046] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11544] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./522/cgroup.cpu", [pid 11544] <... futex resumed>) = 1 [pid 11541] <... futex resumed>) = 0 [pid 11544] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11543] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11541] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./550/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11544] <... fcntl resumed>) = 0 [pid 11543] <... mprotect resumed>) = 0 [pid 11541] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./522/cgroup.cpu" [pid 11544] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11543] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11541] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./538/cgroup", [pid 5046] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", [pid 11544] <... futex resumed>) = 0 [pid 11543] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11544] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11543] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11541] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11541] <... futex resumed>) = 0 [pid 5049] unlink("./538/cgroup"./strace-static-x86_64: Process 11545 attached [pid 11544] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11541] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5046] unlink("./533/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./522/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11545] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11543] <... clone3 resumed> => {parent_tid=[1106]}, 88) = 1106 [pid 5051] rmdir("./550" [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11545] <... rseq resumed>) = 0 [pid 11543] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11545] set_robust_list(0x7f504ff7f9a0, 24 [pid 11543] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./522/binderfs", [pid 11544] <... openat resumed>) = 4 [pid 11545] <... set_robust_list resumed>) = 0 [pid 11543] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11544] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11545] rt_sigprocmask(SIG_SETMASK, [], [pid 11543] <... futex resumed>) = 0 [pid 11541] <... futex resumed>) = ? [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./533/cgroup.net", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11545] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11544] +++ killed by SIGIO +++ [pid 11543] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] mkdir("./551", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./522/binderfs" [pid 11545] open(".", O_RDONLY [pid 5051] <... mkdir resumed>) = 0 [pid 5049] unlink("./538/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./533/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 11545] <... open resumed>) = 3 [pid 5045] umount2("./522/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./522/cgroup", [pid 11545] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11545] <... futex resumed>) = 1 [pid 11543] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] unlink("./522/cgroup" [pid 11545] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11543] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11545] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11541] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1072, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11545] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11543] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11545] <... fcntl resumed>) = 0 [pid 11543] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./522/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11545] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11545] <... futex resumed>) = 0 [pid 11543] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11545] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11543] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./522/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11546 attached [pid 5049] unlink("./538/cgroup.net" [pid 5046] rmdir("./533" [pid 11545] <... openat resumed>) = 4 [pid 11543] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] unlink("./522/blkio.bfq.io_wait_time_recursive" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1104 [pid 5049] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11546] set_robust_list(0x555556ac56a0, 24 [pid 5049] close(3 [pid 5047] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./522/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... close resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./534", 0777 [pid 11546] <... set_robust_list resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11546] chdir("./551" [pid 5049] rmdir("./538" [pid 5047] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... mkdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./522/cgroup.net", [pid 11546] <... chdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 5045] unlink("./522/cgroup.net" [pid 11546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11546] setpgid(0, 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11546] <... setpgid resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] getdents64(3, [pid 11546] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] mkdir("./539", 0777 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11545] +++ killed by SIGIO +++ [pid 11543] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11547 attached [pid 11546] <... symlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./535/cgroup.cpu", [pid 5045] <... close resumed>) = 0 [pid 11547] set_robust_list(0x555556ac56a0, 24 [pid 11546] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1105, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1070 ./strace-static-x86_64: Process 11548 attached [pid 11547] <... set_robust_list resumed>) = 0 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./522" [pid 11548] set_robust_list(0x555556ac56a0, 24 [pid 11546] <... symlink resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 11548] <... set_robust_list resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1080 [pid 5047] unlink("./535/cgroup.cpu" [pid 11548] chdir("./539" [pid 5045] <... rmdir resumed>) = 0 [pid 11548] <... chdir resumed>) = 0 [pid 11547] chdir("./534" [pid 5047] <... unlink resumed>) = 0 [pid 11548] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11547] <... chdir resumed>) = 0 [pid 11546] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11548] <... prctl resumed>) = 0 [pid 5047] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11548] setpgid(0, 0 [pid 11547] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11548] <... setpgid resumed>) = 0 [pid 11546] <... symlink resumed>) = 0 [pid 11547] <... prctl resumed>) = 0 [pid 5050] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./523", 0777 [pid 11548] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11547] setpgid(0, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./535/binderfs", [pid 11548] <... symlink resumed>) = 0 [pid 11547] <... setpgid resumed>) = 0 [pid 11546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11548] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] unlink("./535/binderfs") = 0 [pid 11548] <... symlink resumed>) = 0 [pid 11547] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11546] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11548] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5050] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 11546] write(3, "1000", 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11548] <... symlink resumed>) = 0 [pid 11546] <... write resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./535/cgroup", [pid 11548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11548] <... openat resumed>) = 3 [pid 5050] unlink("./551/cgroup.cpu") = 0 [pid 5047] unlink("./535/cgroup" [pid 11548] write(3, "1000", 4 [pid 5047] <... unlink resumed>) = 0 [pid 11548] <... write resumed>) = 4 [pid 5050] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11548] close(3 [pid 11547] <... symlink resumed>) = 0 [pid 11546] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11548] <... close resumed>) = 0 [pid 11547] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11546] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./551/binderfs", [pid 5047] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11548] symlink("/dev/binderfs", "./binderfs" [pid 11546] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11548] <... symlink resumed>) = 0 [pid 11547] <... symlink resumed>) = 0 [pid 11546] <... symlink resumed>) = 0 [pid 5050] unlink("./551/binderfs" [pid 5047] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11549 attached [pid 11548] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11547] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11546] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11549] set_robust_list(0x555556ac56a0, 24 [pid 11548] <... futex resumed>) = 0 [pid 11546] <... futex resumed>) = 0 [pid 11548] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11546] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11549] <... set_robust_list resumed>) = 0 [pid 11548] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11546] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] unlink("./535/blkio.bfq.io_wait_time_recursive" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1048 [pid 11546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11547] <... symlink resumed>) = 0 [pid 11546] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11549] chdir("./523" [pid 11548] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11546] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./551/cgroup", [pid 5047] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11549] <... chdir resumed>) = 0 [pid 11548] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11547] <... openat resumed>) = 3 [pid 11546] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11549] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11548] <... mprotect resumed>) = 0 [pid 5050] unlink("./551/cgroup" [pid 11549] <... prctl resumed>) = 0 [pid 11548] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 11549] setpgid(0, 0 [pid 11548] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11547] write(3, "1000", 4 [pid 11546] <... mprotect resumed>) = 0 [pid 11549] <... setpgid resumed>) = 0 [pid 11548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11549] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11547] <... write resumed>) = 4 [pid 5050] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./535/cgroup.net") = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./535" [pid 11547] close(3) = 0 [pid 11547] symlink("/dev/binderfs", "./binderfs" [pid 11546] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... rmdir resumed>) = 0 [pid 11549] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11550 attached [pid 11547] <... symlink resumed>) = 0 [pid 11550] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11548] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 11550] <... rseq resumed>) = 0 [pid 11548] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", [pid 5047] mkdir("./536", 0777 [pid 11550] set_robust_list(0x7f504ff7f9a0, 24 [pid 11549] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11548] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11547] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11546] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11550] <... set_robust_list resumed>) = 0 [pid 11548] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11550] rt_sigprocmask(SIG_SETMASK, [], [pid 11549] <... symlink resumed>) = 0 [pid 11548] <... futex resumed>) = 0 [pid 11547] <... futex resumed>) = 0 [pid 5050] unlink("./551/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11551 attached [pid 11550] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11549] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11548] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11547] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11551] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11550] open(".", O_RDONLY [pid 11549] <... symlink resumed>) = 0 [pid 11547] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11546] <... clone3 resumed> => {parent_tid=[1105]}, 88) = 1105 [pid 5050] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11551] <... rseq resumed>) = 0 [pid 11550] <... open resumed>) = 3 [pid 11551] set_robust_list(0x7f504ff7f9a0, 24 [pid 11550] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11551] <... set_robust_list resumed>) = 0 [pid 11551] rt_sigprocmask(SIG_SETMASK, [], [pid 11550] <... futex resumed>) = 1 [pid 11549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11548] <... futex resumed>) = 0 [pid 11547] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11546] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11552 attached [pid 11551] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11550] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11549] <... openat resumed>) = 3 [pid 11548] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11547] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11546] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1074 [pid 11552] set_robust_list(0x555556ac56a0, 24 [pid 11551] open(".", O_RDONLY [pid 11550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11549] write(3, "1000", 4 [pid 11548] <... futex resumed>) = 0 [pid 11547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11546] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11550] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11549] <... write resumed>) = 4 [pid 11546] <... futex resumed>) = 0 [pid 11549] close(3 [pid 11547] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] unlink("./551/cgroup.net" [pid 11546] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11552] <... set_robust_list resumed>) = 0 [pid 11551] <... open resumed>) = 3 [pid 11550] <... fcntl resumed>) = 0 [pid 11549] <... close resumed>) = 0 [pid 11548] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11552] chdir("./536" [pid 11551] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11550] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11549] symlink("/dev/binderfs", "./binderfs" [pid 11548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11547] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] getdents64(3, [pid 11552] <... chdir resumed>) = 0 [pid 11551] <... futex resumed>) = 0 [pid 11550] <... futex resumed>) = 0 [pid 11548] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11552] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11551] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11550] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11549] <... symlink resumed>) = 0 [pid 11548] <... futex resumed>) = 0 [pid 11547] <... mprotect resumed>) = 0 [pid 11546] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] close(3 [pid 11552] <... prctl resumed>) = 0 [pid 11551] <... fcntl resumed>) = 0 [pid 11550] <... openat resumed>) = 4 [pid 11552] setpgid(0, 0 [pid 11547] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11552] <... setpgid resumed>) = 0 [pid 11551] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11546] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 11552] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11551] <... futex resumed>) = 0 [pid 11550] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11549] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11548] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11547] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11546] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11552] <... symlink resumed>) = 0 [pid 11551] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11550] <... futex resumed>) = ? [pid 11549] <... futex resumed>) = 0 [pid 11547] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] rmdir("./551"./strace-static-x86_64: Process 11553 attached [pid 11551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11549] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11546] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11549] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11553] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11547] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 11546] <... futex resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11551] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11553] <... rseq resumed>) = 0 [pid 11552] <... symlink resumed>) = 0 [pid 11549] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11546] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11553] set_robust_list(0x7f504ff7f9a0, 24 [pid 11551] <... openat resumed>) = 4 [pid 11549] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11547] rt_sigprocmask(SIG_SETMASK, [], [pid 11546] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] mkdir("./552", 0777 [pid 11553] <... set_robust_list resumed>) = 0 [pid 11552] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11551] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11550] +++ killed by SIGIO +++ [pid 11548] +++ killed by SIGIO +++ [pid 11553] rt_sigprocmask(SIG_SETMASK, [], [pid 11552] <... symlink resumed>) = 0 [pid 11549] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11546] restart_syscall(<... resuming interrupted futex ...> [pid 5050] <... mkdir resumed>) = 0 [pid 11549] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1080, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11553] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11553] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... restart_syscall resumed>) = 0 [pid 11552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11549] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11547] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11546] <... restart_syscall resumed>) = ? [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11552] write(3, "1000", 4 [pid 11551] +++ killed by SIGIO +++ [pid 11549] <... mprotect resumed>) = 0 [pid 11547] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11553] <... futex resumed>) = 0 [pid 11552] <... write resumed>) = 4 [pid 11547] <... futex resumed>) = 1 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11553] open(".", O_RDONLY [pid 11552] close(3 [pid 11547] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11553] <... open resumed>) = 3 [pid 11552] <... close resumed>) = 0 [pid 11549] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... openat resumed>) = 3 [pid 11553] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] symlink("/dev/binderfs", "./binderfs" [pid 5049] newfstatat(3, "", [pid 11552] <... symlink resumed>) = 0 [pid 11549] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11549] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11547] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11553] <... futex resumed>) = 0 [pid 11552] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11554 attached [pid 11553] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11552] <... futex resumed>) = 0 [pid 11547] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 11554] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11553] <... fcntl resumed>) = 0 [pid 11552] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11554] <... rseq resumed>) = 0 [pid 11553] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11554] set_robust_list(0x7f504ff7f9a0, 24 [pid 11553] <... futex resumed>) = 0 [pid 11552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11554] <... set_robust_list resumed>) = 0 [pid 11553] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11552] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11554] rt_sigprocmask(SIG_SETMASK, [], [pid 11552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 11554] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11552] <... mmap resumed>) = 0x7f504ff5f000 [pid 11554] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11552] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11552] <... mprotect resumed>) = 0 [pid 11547] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11552] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] unlink("./539/cgroup.cpu"./strace-static-x86_64: Process 11555 attached [pid 11549] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 [pid 11547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1107 [pid 5049] <... unlink resumed>) = 0 [pid 11555] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11552] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11549] rt_sigprocmask(SIG_SETMASK, [], [pid 11547] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11553] <... futex resumed>) = 0 [pid 11552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11549] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11547] <... futex resumed>) = 1 [pid 5049] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11556 attached [pid 11555] chdir("./552" [pid 11553] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11549] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11547] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11546] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11556] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11555] <... chdir resumed>) = 0 [pid 11554] <... futex resumed>) = 0 [pid 11553] <... openat resumed>) = 4 [pid 11552] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 11549] <... futex resumed>) = 1 [pid 11547] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] newfstatat(AT_FDCWD, "./539/binderfs", [pid 11556] <... rseq resumed>) = 0 [pid 11555] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11554] open(".", O_RDONLY [pid 11553] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] rt_sigprocmask(SIG_SETMASK, [], [pid 11547] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1104, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11556] set_robust_list(0x7f504ff7f9a0, 24 [pid 11555] <... prctl resumed>) = 0 [pid 11553] <... futex resumed>) = ? [pid 11552] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11549] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11556] <... set_robust_list resumed>) = 0 [pid 11555] setpgid(0, 0 [pid 11554] <... open resumed>) = 3 [pid 11553] +++ killed by SIGIO +++ [pid 11552] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./539/binderfs" [pid 11556] rt_sigprocmask(SIG_SETMASK, [], [pid 11554] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] <... futex resumed>) = 0 [pid 11556] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11555] <... setpgid resumed>) = 0 [pid 11554] <... futex resumed>) = 1 [pid 11552] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11549] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 11556] open(".", O_RDONLY [pid 11555] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11554] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11549] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11556] <... open resumed>) = 3 [pid 11554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11549] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11555] <... symlink resumed>) = 0 [pid 5049] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11556] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11555] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11554] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11547] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11556] <... futex resumed>) = 1 [pid 11555] <... symlink resumed>) = 0 [pid 11552] <... futex resumed>) = 0 [pid 11554] <... fcntl resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5049] newfstatat(AT_FDCWD, "./539/cgroup", [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1070, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11556] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11555] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11554] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11555] <... symlink resumed>) = 0 [pid 11554] <... futex resumed>) = 1 [pid 11552] <... futex resumed>) = 0 [pid 11549] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11556] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11554] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11552] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11549] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./539/cgroup" [pid 11556] <... fcntl resumed>) = 0 [pid 11554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11556] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11554] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11549] <... futex resumed>) = 0 [pid 5046] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11556] <... futex resumed>) = 1 [pid 11552] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11554] <... openat resumed>) = 4 [pid 5046] newfstatat(3, "", [pid 11555] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11556] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11555] write(3, "1000", 4 [pid 11554] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11552] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11549] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11555] <... write resumed>) = 4 [pid 11554] <... futex resumed>) = ? [pid 11552] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11555] close(3 [pid 5051] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./534/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./534/cgroup.cpu") = 0 [pid 5049] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11555] <... close resumed>) = 0 [pid 5051] unlink("./551/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11556] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11555] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./534/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11555] <... symlink resumed>) = 0 [pid 11552] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./534/binderfs") = 0 [pid 11556] <... openat resumed>) = 4 [pid 5046] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./534/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./534/cgroup" [pid 5049] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 11552] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./551/binderfs", [pid 11555] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11556] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11555] <... futex resumed>) = 0 [pid 11552] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11556] <... futex resumed>) = ? [pid 11555] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./551/binderfs" [pid 11556] +++ killed by SIGIO +++ [pid 11555] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 5046] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 11555] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11554] +++ killed by SIGIO +++ [pid 11549] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11555] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./534/blkio.bfq.io_wait_time_recursive" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1048, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11555] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./539/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./523", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11555] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./551/cgroup", [pid 5049] getdents64(3, [pid 11555] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11555] <... mprotect resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11555] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] close(3 [pid 5046] newfstatat(AT_FDCWD, "./534/cgroup.net", [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 5049] rmdir("./539" [pid 5046] unlink("./534/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11555] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] unlink("./551/cgroup" [pid 11555] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11557 attached [pid 5046] getdents64(3, [pid 11555] <... clone3 resumed> => {parent_tid=[1108]}, 88) = 1108 [pid 11557] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./523/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11557] <... rseq resumed>) = 0 [pid 5046] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11557] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11555] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5049] mkdir("./540", 0777 [pid 5045] newfstatat(AT_FDCWD, "./523/cgroup.cpu", [pid 11557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5046] rmdir("./534" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11557] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 11555] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", [pid 11552] +++ killed by SIGIO +++ [pid 5045] unlink("./523/cgroup.cpu") = 0 [pid 5046] mkdir("./535", 0777 [pid 11555] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... mkdir resumed>) = 0 [pid 5045] umount2("./523/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11558 attached , child_tidptr=0x555556ac5690) = 1072 [pid 11558] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11558] chdir("./535") = 0 [pid 11558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11558] setpgid(0, 0) = 0 [pid 11558] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11557] <... futex resumed>) = 0 [pid 11555] <... futex resumed>) = 1 [pid 5051] unlink("./551/blkio.bfq.io_wait_time_recursive" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1074, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11558] <... symlink resumed>) = 0 [pid 11557] open(".", O_RDONLY [pid 11555] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11557] <... open resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 11557] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11558] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11557] <... futex resumed>) = 1 [pid 11555] <... futex resumed>) = 0 [pid 5051] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./523/binderfs", ./strace-static-x86_64: Process 11559 attached [pid 11558] <... symlink resumed>) = 0 [pid 11557] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11555] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 11557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11555] <... futex resumed>) = 0 [pid 11558] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11557] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11555] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(3, "", [pid 11558] <... symlink resumed>) = 0 [pid 11557] <... fcntl resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1082 [pid 11559] set_robust_list(0x555556ac56a0, 24 [pid 11558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11557] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./523/binderfs" [pid 11559] <... set_robust_list resumed>) = 0 [pid 11557] <... futex resumed>) = 1 [pid 11555] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 11557] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11555] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11555] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11557] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11555] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 11559] chdir("./540" [pid 11557] <... openat resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./523/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11559] <... chdir resumed>) = 0 [pid 5051] unlink("./551/cgroup.net" [pid 11559] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./523/cgroup", [pid 11559] <... prctl resumed>) = 0 [pid 11555] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] getdents64(3, [pid 5047] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11559] setpgid(0, 0 [pid 11558] <... openat resumed>) = 3 [pid 11557] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11555] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11559] <... setpgid resumed>) = 0 [pid 11558] write(3, "1000", 4 [pid 11557] <... futex resumed>) = ? [pid 5051] close(3 [pid 11559] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11558] <... write resumed>) = 4 [pid 11557] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./536/cgroup.cpu", [pid 5045] unlink("./523/cgroup" [pid 11559] <... symlink resumed>) = 0 [pid 11558] close(3 [pid 5051] rmdir("./551" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11559] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11558] <... close resumed>) = 0 [pid 11555] +++ killed by SIGIO +++ [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1107, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] unlink("./536/cgroup.cpu" [pid 11558] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11559] <... symlink resumed>) = 0 [pid 11558] <... symlink resumed>) = 0 [pid 5050] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11559] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11558] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./552", 0777 [pid 5045] umount2("./523/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./536/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11558] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./523/blkio.bfq.io_wait_time_recursive", [pid 11558] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11559] <... symlink resumed>) = 0 [pid 11558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] unlink("./523/blkio.bfq.io_wait_time_recursive" [pid 11559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11558] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(3, "", [pid 5047] unlink("./536/binderfs" [pid 11558] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./536/cgroup", ./strace-static-x86_64: Process 11560 attached [pid 11558] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11560] set_robust_list(0x555556ac56a0, 24 [pid 11558] <... mprotect resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11560] <... set_robust_list resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./536/cgroup" [pid 11560] chdir("./552" [pid 11559] <... openat resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./552/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 11559] write(3, "1000", 4 [pid 11558] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11560] <... chdir resumed>) = 0 [pid 5050] unlink("./552/cgroup.cpu" [pid 5047] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11560] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11560] <... prctl resumed>) = 0 [pid 11559] <... write resumed>) = 4 [pid 11558] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./523/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11559] close(3 [pid 11558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11560] setpgid(0, 0 [pid 5050] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11561 attached [pid 11560] <... setpgid resumed>) = 0 [pid 11559] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./523/cgroup.net", [pid 11561] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11560] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11559] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11561] <... rseq resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./552/binderfs", [pid 5047] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 11561] set_robust_list(0x7f504ff7f9a0, 24 [pid 11560] <... symlink resumed>) = 0 [pid 11559] <... symlink resumed>) = 0 [pid 5045] unlink("./523/cgroup.net") = 0 [pid 11559] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11558] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1106 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 11561] <... set_robust_list resumed>) = 0 [pid 11560] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11559] <... futex resumed>) = 0 [pid 11558] rt_sigprocmask(SIG_SETMASK, [], [pid 11561] rt_sigprocmask(SIG_SETMASK, [], [pid 11558] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./552/binderfs" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11561] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11560] <... symlink resumed>) = 0 [pid 11559] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11558] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 11561] open(".", O_RDONLY [pid 11560] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11559] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11558] <... futex resumed>) = 0 [pid 5047] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11561] <... open resumed>) = 3 [pid 11560] <... symlink resumed>) = 0 [pid 11559] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11558] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./523" [pid 11561] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11559] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] newfstatat(AT_FDCWD, "./536/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./536/cgroup.net" [pid 5045] <... rmdir resumed>) = 0 [pid 11559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11560] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11559] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11561] <... futex resumed>) = 0 [pid 11558] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11561] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] newfstatat(AT_FDCWD, "./552/cgroup", [pid 11558] <... futex resumed>) = 0 [pid 5047] close(3 [pid 11561] <... fcntl resumed>) = 0 [pid 11558] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./536" [pid 5050] unlink("./552/cgroup" [pid 5047] <... rmdir resumed>) = 0 [pid 11560] write(3, "1000", 4 [pid 11561] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11559] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] mkdir("./524", 0777 [pid 11561] <... futex resumed>) = 0 [pid 11560] <... write resumed>) = 4 [pid 11558] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] mkdir("./537", 0777 [pid 5045] <... mkdir resumed>) = 0 [pid 11560] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 11559] <... mprotect resumed>) = 0 [pid 11561] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11558] <... futex resumed>) = 0 [pid 11560] <... close resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11560] symlink("/dev/binderfs", "./binderfs" [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11561] <... openat resumed>) = 4 [pid 11560] <... symlink resumed>) = 0 [pid 11559] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11558] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11561] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11562 attached [pid 11560] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11559] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1076 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11561] <... futex resumed>) = ? [pid 11560] <... futex resumed>) = 0 [pid 11559] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 11560] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, ./strace-static-x86_64: Process 11563 attached [pid 11563] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 ./strace-static-x86_64: Process 11564 attached [pid 11563] set_robust_list(0x7f504ff7f9a0, 24 [pid 11562] set_robust_list(0x555556ac56a0, 24 [pid 11561] +++ killed by SIGIO +++ [pid 11560] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11559] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 11558] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 11564] set_robust_list(0x555556ac56a0, 24 [pid 11563] <... set_robust_list resumed>) = 0 [pid 11564] <... set_robust_list resumed>) = 0 [pid 11563] rt_sigprocmask(SIG_SETMASK, [], [pid 11560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11562] <... set_robust_list resumed>) = 0 [pid 5050] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11559] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1072, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1050 [pid 11564] chdir("./524" [pid 11563] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11560] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11559] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./552/cgroup.net", [pid 11564] <... chdir resumed>) = 0 [pid 11563] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11560] <... mmap resumed>) = 0x7f504ff5f000 [pid 11564] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11560] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11564] <... prctl resumed>) = 0 [pid 11559] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11564] setpgid(0, 0 [pid 11562] chdir("./537" [pid 11560] <... mprotect resumed>) = 0 [pid 11563] <... futex resumed>) = 0 [pid 11559] <... futex resumed>) = 1 [pid 5050] unlink("./552/cgroup.net" [pid 11564] <... setpgid resumed>) = 0 [pid 11563] open(".", O_RDONLY [pid 11562] <... chdir resumed>) = 0 [pid 5046] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11564] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11563] <... open resumed>) = 3 [pid 11562] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11560] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11559] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11562] <... prctl resumed>) = 0 [pid 11560] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11562] setpgid(0, 0 [pid 5050] getdents64(3, [pid 11560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11564] <... symlink resumed>) = 0 [pid 11563] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... openat resumed>) = 3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11562] <... setpgid resumed>) = 0 [pid 11563] <... futex resumed>) = 1 [pid 11563] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11559] <... futex resumed>) = 0 [pid 11564] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11559] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11563] <... futex resumed>) = 0 [pid 11559] <... futex resumed>) = 1 [pid 11564] <... symlink resumed>) = 0 [pid 11563] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11559] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] close(3 [pid 5046] newfstatat(3, "", [pid 11563] <... fcntl resumed>) = 0 [pid 11562] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] rmdir("./552" [pid 5046] getdents64(3, ./strace-static-x86_64: Process 11565 attached [pid 11564] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11563] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11565] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11564] <... symlink resumed>) = 0 [pid 11563] <... futex resumed>) = 1 [pid 11562] <... symlink resumed>) = 0 [pid 11559] <... futex resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11565] <... rseq resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11560] <... clone3 resumed> => {parent_tid=[1107]}, 88) = 1107 [pid 11560] rt_sigprocmask(SIG_SETMASK, [], [pid 11565] set_robust_list(0x7f504ff7f9a0, 24 [pid 11564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11563] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11560] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11559] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11565] <... set_robust_list resumed>) = 0 [pid 11564] <... openat resumed>) = 3 [pid 11563] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11562] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11560] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11559] <... futex resumed>) = 0 [pid 5050] mkdir("./553", 0777 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11565] rt_sigprocmask(SIG_SETMASK, [], [pid 11564] write(3, "1000", 4 [pid 11563] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11562] <... symlink resumed>) = 0 [pid 11560] <... futex resumed>) = 0 [pid 11559] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11565] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11564] <... write resumed>) = 4 [pid 11563] <... openat resumed>) = 4 [pid 11565] open(".", O_RDONLY [pid 11560] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./535/cgroup.cpu", [pid 11562] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11565] <... open resumed>) = 3 [pid 11564] close(3 [pid 11565] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11564] <... close resumed>) = 0 [pid 11565] <... futex resumed>) = 1 [pid 11564] symlink("/dev/binderfs", "./binderfs" [pid 11563] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11565] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11564] <... symlink resumed>) = 0 [pid 11562] <... symlink resumed>) = 0 [pid 11560] <... futex resumed>) = 0 [pid 11559] <... futex resumed>) = ? [pid 11563] +++ killed by SIGIO +++ [pid 11560] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11560] <... futex resumed>) = 1 [pid 5046] unlink("./535/cgroup.cpu" [pid 11560] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11565] <... futex resumed>) = 0 [pid 11565] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11565] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11560] <... futex resumed>) = 0 [pid 11565] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11560] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11565] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11565] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11564] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11560] <... futex resumed>) = 0 [pid 11564] <... futex resumed>) = 0 [pid 5046] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11562] <... openat resumed>) = 3 [pid 11565] <... openat resumed>) = 4 [pid 11564] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11560] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11559] +++ killed by SIGIO +++ [pid 11562] write(3, "1000", 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./535/binderfs", [pid 11564] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11566 attached [pid 11564] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11562] <... write resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11566] set_robust_list(0x555556ac56a0, 24 [pid 11565] +++ killed by SIGIO +++ [pid 11564] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11562] close(3 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1109 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1082, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] unlink("./535/binderfs" [pid 11566] <... set_robust_list resumed>) = 0 [pid 11564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11562] <... close resumed>) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... unlink resumed>) = 0 [pid 11566] chdir("./553" [pid 11564] <... mmap resumed>) = 0x7f504ff5f000 [pid 11562] symlink("/dev/binderfs", "./binderfs" [pid 11560] +++ killed by SIGIO +++ [pid 5049] <... restart_syscall resumed>) = 0 [pid 5046] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11562] <... symlink resumed>) = 0 [pid 11564] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1106, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] newfstatat(AT_FDCWD, "./535/cgroup", [pid 5051] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11564] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", [pid 5049] newfstatat(3, "", [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] unlink("./535/cgroup" [pid 11564] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11566] <... chdir resumed>) = 0 [pid 11562] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5049] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 11562] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11566] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11564] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11562] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11566] <... prctl resumed>) = 0 [pid 11564] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11562] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11567 attached [pid 11566] setpgid(0, 0 [pid 11562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11567] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11566] <... setpgid resumed>) = 0 [pid 11564] <... clone3 resumed> => {parent_tid=[1051]}, 88) = 1051 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11567] <... rseq resumed>) = 0 [pid 11564] rt_sigprocmask(SIG_SETMASK, [], [pid 11567] set_robust_list(0x7f504ff7f9a0, 24 [pid 11566] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11567] <... set_robust_list resumed>) = 0 [pid 11564] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11562] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./552/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", [pid 11567] rt_sigprocmask(SIG_SETMASK, [], [pid 11564] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11567] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11564] <... futex resumed>) = 0 [pid 11562] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11567] open(".", O_RDONLY [pid 11566] <... symlink resumed>) = 0 [pid 11562] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./552/cgroup.cpu" [pid 11566] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11564] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./540/cgroup.cpu" [pid 11567] <... open resumed>) = 3 [pid 11562] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./535/blkio.bfq.io_wait_time_recursive" [pid 11566] <... symlink resumed>) = 0 [pid 11567] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11562] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11566] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 11567] <... futex resumed>) = 1 [pid 11564] <... futex resumed>) = 0 [pid 5049] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11566] <... symlink resumed>) = 0 [pid 11562] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11567] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11564] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11568 attached [pid 11567] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11566] <... openat resumed>) = 3 [pid 11564] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./540/binderfs", [pid 5046] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11568] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11567] <... fcntl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./552/binderfs", [pid 11568] <... rseq resumed>) = 0 [pid 11567] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11566] write(3, "1000", 4 [pid 11564] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11568] set_robust_list(0x7f504ff7f9a0, 24 [pid 11567] <... futex resumed>) = 0 [pid 11566] <... write resumed>) = 4 [pid 11564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11562] <... clone3 resumed> => {parent_tid=[1077]}, 88) = 1077 [pid 5051] unlink("./552/binderfs" [pid 5046] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 11568] <... set_robust_list resumed>) = 0 [pid 11567] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11566] close(3 [pid 11564] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11562] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./540/binderfs" [pid 11568] rt_sigprocmask(SIG_SETMASK, [], [pid 11567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11566] <... close resumed>) = 0 [pid 11564] <... futex resumed>) = 0 [pid 11562] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11567] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11566] symlink("/dev/binderfs", "./binderfs" [pid 5051] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11564] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./535/cgroup.net" [pid 11568] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11566] <... symlink resumed>) = 0 [pid 11562] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./552/cgroup", [pid 5046] getdents64(3, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11567] <... openat resumed>) = 4 [pid 11566] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./552/cgroup" [pid 11568] open(".", O_RDONLY [pid 11566] <... futex resumed>) = 0 [pid 11562] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11564] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] close(3 [pid 11567] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11568] <... open resumed>) = 3 [pid 11566] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11564] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11562] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11568] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11566] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] newfstatat(AT_FDCWD, "./540/cgroup", [pid 5046] <... close resumed>) = 0 [pid 11568] <... futex resumed>) = 0 [pid 11566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11568] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11566] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11562] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11568] <... fcntl resumed>) = 0 [pid 5049] unlink("./540/cgroup" [pid 11562] <... futex resumed>) = 0 [pid 11568] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11566] <... mmap resumed>) = 0x7f504ff5f000 [pid 11562] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5046] rmdir("./535" [pid 11568] <... futex resumed>) = 0 [pid 11566] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11568] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 11566] <... mprotect resumed>) = 0 [pid 11568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11562] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11568] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11562] <... futex resumed>) = 0 [pid 11567] +++ killed by SIGIO +++ [pid 11564] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./536", 0777 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1050, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11568] <... openat resumed>) = 4 [pid 11566] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11562] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", [pid 5046] <... mkdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./552/cgroup.net", [pid 11566] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11568] +++ killed by SIGIO +++ [pid 11566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./552/cgroup.net" [pid 5049] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./524", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] getdents64(3, [pid 5045] <... openat resumed>) = 3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5045] newfstatat(3, "", [pid 5051] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] rmdir("./552" [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11569 attached [pid 5051] <... rmdir resumed>) = 0 [pid 5045] umount2("./524/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11569] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./524/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11569] <... rseq resumed>) = 0 [pid 5051] mkdir("./553", 0777 [pid 5045] unlink("./524/cgroup.cpu" [pid 11566] <... clone3 resumed> => {parent_tid=[1110]}, 88) = 1110 [pid 11562] +++ killed by SIGIO +++ [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5049] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11570 attached [pid 11569] set_robust_list(0x7f504ff7f9a0, 24 [pid 11566] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./524/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11570] set_robust_list(0x555556ac56a0, 24 [pid 11569] <... set_robust_list resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11569] rt_sigprocmask(SIG_SETMASK, [], [pid 11566] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11570] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 11571 attached [pid 11570] chdir("./536" [pid 11569] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11566] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1076, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1074 [pid 5045] newfstatat(AT_FDCWD, "./524/binderfs", [pid 11569] open(".", O_RDONLY [pid 11566] <... futex resumed>) = 0 [pid 5049] unlink("./540/cgroup.net" [pid 5047] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11571] set_robust_list(0x555556ac56a0, 24 [pid 11570] <... chdir resumed>) = 0 [pid 11569] <... open resumed>) = 3 [pid 11566] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1108 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11571] <... set_robust_list resumed>) = 0 [pid 11570] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11569] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./524/binderfs" [pid 11571] chdir("./553" [pid 11570] <... prctl resumed>) = 0 [pid 11569] <... futex resumed>) = 1 [pid 11566] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11570] setpgid(0, 0 [pid 11569] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11566] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11569] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11566] <... futex resumed>) = 0 [pid 11571] <... chdir resumed>) = 0 [pid 11570] <... setpgid resumed>) = 0 [pid 11569] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11566] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./524/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11571] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] getdents64(3, [pid 11571] <... prctl resumed>) = 0 [pid 5049] close(3 [pid 11569] <... fcntl resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11571] setpgid(0, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11571] <... setpgid resumed>) = 0 [pid 11570] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11569] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./540" [pid 5047] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./524/cgroup", [pid 11571] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11570] <... symlink resumed>) = 0 [pid 11569] <... futex resumed>) = 1 [pid 11566] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11569] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11566] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11569] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] unlink("./524/cgroup" [pid 11569] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11566] <... futex resumed>) = 0 [pid 11571] <... symlink resumed>) = 0 [pid 11570] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11571] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11570] <... symlink resumed>) = 0 [pid 11569] <... openat resumed>) = 4 [pid 11566] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11570] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5049] mkdir("./541", 0777 [pid 5047] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5045] umount2("./524/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11571] <... symlink resumed>) = 0 [pid 11570] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11571] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] unlink("./537/cgroup.cpu" [pid 11571] <... symlink resumed>) = 0 [pid 11570] <... openat resumed>) = 3 [pid 5049] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11570] write(3, "1000", 4 [pid 5045] newfstatat(AT_FDCWD, "./524/blkio.bfq.io_wait_time_recursive", [pid 11571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11570] <... write resumed>) = 4 [pid 5047] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] unlink("./524/blkio.bfq.io_wait_time_recursive" [pid 11570] close(3 [pid 11569] +++ killed by SIGIO +++ [pid 11566] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11570] <... close resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1109, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... unlink resumed>) = 0 [pid 11571] <... openat resumed>) = 3 [pid 11570] symlink("/dev/binderfs", "./binderfs" [pid 5047] newfstatat(AT_FDCWD, "./537/binderfs", [pid 11571] write(3, "1000", 4 [pid 11570] <... symlink resumed>) = 0 [pid 5045] umount2("./524/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11570] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./537/binderfs" [pid 11571] <... write resumed>) = 4 [pid 11570] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11572 attached [pid 11571] close(3 [pid 11570] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11571] <... close resumed>) = 0 [pid 11570] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11571] symlink("/dev/binderfs", "./binderfs" [pid 11570] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11571] <... symlink resumed>) = 0 [pid 11570] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 11572] set_robust_list(0x555556ac56a0, 24 [pid 11571] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11570] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./524/cgroup.net", [pid 11572] <... set_robust_list resumed>) = 0 [pid 11571] <... futex resumed>) = 0 [pid 11570] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1084 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11572] chdir("./541" [pid 11571] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11570] <... mprotect resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11571] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11570] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./537/cgroup", [pid 5045] unlink("./524/cgroup.net" [pid 11572] <... chdir resumed>) = 0 [pid 11571] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11570] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11572] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11571] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11570] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11573 attached [pid 11572] <... prctl resumed>) = 0 [pid 11571] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./537/cgroup" [pid 11573] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11571] <... mmap resumed>) = 0x7f504ff5f000 [pid 11570] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 11572] setpgid(0, 0 [pid 5045] getdents64(3, [pid 11573] <... rseq resumed>) = 0 [pid 11572] <... setpgid resumed>) = 0 [pid 11571] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11570] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11570] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11570] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11572] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11571] <... mprotect resumed>) = 0 [pid 11570] <... futex resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 11570] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 5045] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11573] set_robust_list(0x7f504ff7f9a0, 24 [pid 11571] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] getdents64(3, [pid 5047] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 5045] <... close resumed>) = 0 [pid 11573] <... set_robust_list resumed>) = 0 [pid 11572] <... symlink resumed>) = 0 [pid 11571] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] rmdir("./524" [pid 11573] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11573] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11573] open(".", O_RDONLY [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11573] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 11573] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11573] <... futex resumed>) = 1 [pid 11570] <... futex resumed>) = 0 [pid 5047] unlink("./537/cgroup.net" [pid 11573] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11570] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./553/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 11573] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11570] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11571] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11573] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11570] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11573] <... fcntl resumed>) = 0 [pid 5047] getdents64(3, [pid 11573] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 11573] <... futex resumed>) = 1 [pid 11570] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11574 attached [pid 11573] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11572] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11570] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./553/binderfs", [pid 5047] close(3 [pid 5045] mkdir("./525", 0777 [pid 11574] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11573] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11572] <... symlink resumed>) = 0 [pid 11571] <... clone3 resumed> => {parent_tid=[1109]}, 88) = 1109 [pid 11570] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11574] <... rseq resumed>) = 0 [pid 11573] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11570] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... close resumed>) = 0 [pid 11573] <... openat resumed>) = 4 [pid 11572] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11571] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./553/binderfs" [pid 5045] <... mkdir resumed>) = 0 [pid 11574] set_robust_list(0x7f504ff7f9a0, 24 [pid 11573] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11572] <... symlink resumed>) = 0 [pid 11571] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11570] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] rmdir("./537" [pid 11574] <... set_robust_list resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11574] rt_sigprocmask(SIG_SETMASK, [], [pid 11571] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] mkdir("./538", 0777./strace-static-x86_64: Process 11575 attached [pid 11574] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11571] <... futex resumed>) = 0 [pid 5050] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... mkdir resumed>) = 0 [pid 11571] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./553/cgroup", [pid 11574] open(".", O_RDONLY [pid 11572] <... openat resumed>) = 3 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11575] set_robust_list(0x555556ac56a0, 24 [pid 11574] <... open resumed>) = 3 [pid 11572] write(3, "1000", 4 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1052 [pid 11575] <... set_robust_list resumed>) = 0 [pid 11574] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11572] <... write resumed>) = 4 [pid 5050] unlink("./553/cgroup"./strace-static-x86_64: Process 11576 attached [pid 11575] chdir("./525" [pid 11574] <... futex resumed>) = 1 [pid 11573] +++ killed by SIGIO +++ [pid 11572] close(3 [pid 11571] <... futex resumed>) = 0 [pid 11570] +++ killed by SIGIO +++ [pid 11576] set_robust_list(0x555556ac56a0, 24 [pid 11575] <... chdir resumed>) = 0 [pid 11574] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11572] <... close resumed>) = 0 [pid 11571] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 11576] <... set_robust_list resumed>) = 0 [pid 11575] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11572] symlink("/dev/binderfs", "./binderfs" [pid 11571] <... futex resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1078 [pid 11576] chdir("./538" [pid 11575] <... prctl resumed>) = 0 [pid 11574] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11572] <... symlink resumed>) = 0 [pid 11571] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11575] setpgid(0, 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1074, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11576] <... chdir resumed>) = 0 [pid 11575] <... setpgid resumed>) = 0 [pid 11574] <... fcntl resumed>) = 0 [pid 5046] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11574] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11572] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11576] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11574] <... futex resumed>) = 1 [pid 11572] <... futex resumed>) = 0 [pid 11571] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", [pid 11576] <... prctl resumed>) = 0 [pid 11575] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11574] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11572] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11571] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11576] setpgid(0, 0 [pid 11575] <... symlink resumed>) = 0 [pid 11574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11572] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11571] <... futex resumed>) = 0 [pid 5050] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 11576] <... setpgid resumed>) = 0 [pid 11575] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11574] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11571] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11576] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11575] <... symlink resumed>) = 0 [pid 11574] <... openat resumed>) = 4 [pid 11572] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11571] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11575] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11572] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./553/cgroup.net", [pid 5046] newfstatat(3, "", [pid 11576] <... symlink resumed>) = 0 [pid 11575] <... symlink resumed>) = 0 [pid 11574] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11572] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11571] restart_syscall(<... resuming interrupted futex ...> [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 11576] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11572] <... mprotect resumed>) = 0 [pid 11571] <... restart_syscall resumed>) = ? [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11576] <... symlink resumed>) = 0 [pid 11574] +++ killed by SIGIO +++ [pid 5050] unlink("./553/cgroup.net" [pid 11576] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11575] <... openat resumed>) = 3 [pid 11572] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11575] write(3, "1000", 4 [pid 11572] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11576] <... symlink resumed>) = 0 [pid 11575] <... write resumed>) = 4 [pid 11572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(AT_FDCWD, "./536/cgroup.cpu", ./strace-static-x86_64: Process 11577 attached [pid 11576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11575] close(3 [pid 11571] +++ killed by SIGIO +++ [pid 5050] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11577] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11576] <... openat resumed>) = 3 [pid 11575] <... close resumed>) = 0 [pid 11572] <... clone3 resumed> => {parent_tid=[1085]}, 88) = 1085 [pid 11577] <... rseq resumed>) = 0 [pid 11576] write(3, "1000", 4 [pid 11572] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1108, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... close resumed>) = 0 [pid 5046] unlink("./536/cgroup.cpu" [pid 11577] set_robust_list(0x7f504ff7f9a0, 24 [pid 11576] <... write resumed>) = 4 [pid 11575] symlink("/dev/binderfs", "./binderfs" [pid 11572] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5050] rmdir("./553" [pid 11577] <... set_robust_list resumed>) = 0 [pid 11576] close(3 [pid 11572] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11577] rt_sigprocmask(SIG_SETMASK, [], [pid 11576] <... close resumed>) = 0 [pid 11572] <... futex resumed>) = 0 [pid 11577] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11576] symlink("/dev/binderfs", "./binderfs" [pid 11575] <... symlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11572] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11576] <... symlink resumed>) = 0 [pid 11577] open(".", O_RDONLY [pid 11576] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11575] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11576] <... futex resumed>) = 0 [pid 11577] <... open resumed>) = 3 [pid 11576] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11575] <... futex resumed>) = 0 [pid 5051] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11577] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11576] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11575] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./536/binderfs", [pid 11577] <... futex resumed>) = 1 [pid 11576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11575] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11572] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] mkdir("./554", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11577] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11576] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11575] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11572] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... mkdir resumed>) = 0 [pid 11577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11572] <... futex resumed>) = 0 [pid 11577] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11576] <... mmap resumed>) = 0x7f504ff5f000 [pid 11572] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11577] <... fcntl resumed>) = 0 [pid 11575] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./536/binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11577] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11576] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11577] <... futex resumed>) = 1 [pid 11576] <... mprotect resumed>) = 0 [pid 11575] <... mmap resumed>) = 0x7f504ff5f000 [pid 11572] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5046] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11578 attached [pid 11577] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11575] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11572] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11578] set_robust_list(0x555556ac56a0, 24 [pid 11575] <... mprotect resumed>) = 0 [pid 11576] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11578] <... set_robust_list resumed>) = 0 [pid 11577] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11576] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11572] <... futex resumed>) = 0 [pid 5051] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11572] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11575] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11578] chdir("./554" [pid 5046] newfstatat(AT_FDCWD, "./536/cgroup", [pid 11575] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11575] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] unlink("./536/cgroup" [pid 11578] <... chdir resumed>) = 0 [pid 11577] <... openat resumed>) = 4 [pid 11576] <... clone3 resumed> => {parent_tid=[1079]}, 88) = 1079 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11580 attached ./strace-static-x86_64: Process 11579 attached [pid 11578] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11576] rt_sigprocmask(SIG_SETMASK, [], [pid 11575] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 5051] unlink("./553/cgroup.cpu" [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1111 [pid 5046] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11579] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11578] <... prctl resumed>) = 0 [pid 11576] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11575] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11580] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11579] <... rseq resumed>) = 0 [pid 11578] setpgid(0, 0 [pid 11577] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11576] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11575] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", [pid 11580] <... rseq resumed>) = 0 [pid 11579] set_robust_list(0x7f504ff7f9a0, 24 [pid 11578] <... setpgid resumed>) = 0 [pid 11576] <... futex resumed>) = 0 [pid 11575] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11579] <... set_robust_list resumed>) = 0 [pid 11575] <... futex resumed>) = 0 [pid 11572] <... futex resumed>) = ? [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11578] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11580] set_robust_list(0x7f504ff7f9a0, 24 [pid 11579] rt_sigprocmask(SIG_SETMASK, [], [pid 11577] +++ killed by SIGIO +++ [pid 11576] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11575] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11579] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 11579] open(".", O_RDONLY [pid 5046] <... unlink resumed>) = 0 [pid 11579] <... open resumed>) = 3 [pid 11579] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5046] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11579] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./536/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./536/cgroup.net" [pid 11580] <... set_robust_list resumed>) = 0 [pid 11578] <... symlink resumed>) = 0 [pid 11576] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./553/binderfs", [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11580] rt_sigprocmask(SIG_SETMASK, [], [pid 11576] <... futex resumed>) = 1 [pid 11576] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11579] <... futex resumed>) = 0 [pid 5046] getdents64(3, [pid 11580] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11579] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11580] open(".", O_RDONLY [pid 11579] <... fcntl resumed>) = 0 [pid 11578] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] unlink("./553/binderfs" [pid 11579] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] close(3 [pid 11579] <... futex resumed>) = 1 [pid 11578] <... symlink resumed>) = 0 [pid 11576] <... futex resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11579] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11578] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11576] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5046] rmdir("./536" [pid 11580] <... open resumed>) = 3 [pid 11579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11578] <... symlink resumed>) = 0 [pid 11576] <... futex resumed>) = 0 [pid 11572] +++ killed by SIGIO +++ [pid 5051] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11580] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11579] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11576] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 11580] <... futex resumed>) = 1 [pid 11578] <... openat resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./553/cgroup", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1084, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11580] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11578] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11578] <... write resumed>) = 4 [pid 5051] unlink("./553/cgroup" [pid 11578] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 11578] <... close resumed>) = 0 [pid 11575] <... futex resumed>) = 0 [pid 11576] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11576] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11578] symlink("/dev/binderfs", "./binderfs" [pid 11575] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11579] <... openat resumed>) = ? [pid 11578] <... symlink resumed>) = 0 [pid 11575] <... futex resumed>) = 1 [pid 5051] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./537", 0777 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11580] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", [pid 11580] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11580] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11575] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 11580] <... futex resumed>) = 0 [pid 11578] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11580] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11579] +++ killed by SIGIO +++ [pid 11578] <... futex resumed>) = 0 [pid 5051] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 5049] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11578] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11575] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... openat resumed>) = 3 [pid 11580] <... futex resumed>) = 0 [pid 11578] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11575] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11580] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11575] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11575] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11578] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11575] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] getdents64(3, [pid 11578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11578] <... mmap resumed>) = 0x7f504ff5f000 [pid 11578] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(AT_FDCWD, "./553/cgroup.net", [pid 11578] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 11581 attached [pid 11578] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11576] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11581] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1076 [pid 11581] chdir("./537" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1078, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11578] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./553/cgroup.net" [pid 11578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11582 attached [pid 11581] <... chdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 11582] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11578] <... clone3 resumed> => {parent_tid=[1112]}, 88) = 1112 [pid 5051] getdents64(3, [pid 5047] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11582] <... rseq resumed>) = 0 [pid 11578] rt_sigprocmask(SIG_SETMASK, [], [pid 11582] set_robust_list(0x7f504ff7f9a0, 24 [pid 11578] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11582] <... set_robust_list resumed>) = 0 [pid 11578] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11582] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11578] <... futex resumed>) = 0 [pid 11582] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11581] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11580] +++ killed by SIGIO +++ [pid 11582] open(".", O_RDONLY [pid 11578] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11575] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11582] <... open resumed>) = 3 [pid 11581] <... prctl resumed>) = 0 [pid 5049] unlink("./541/cgroup.cpu" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1052, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11581] setpgid(0, 0) = 0 [pid 11582] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 11582] <... futex resumed>) = 1 [pid 11581] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11578] <... futex resumed>) = 0 [pid 5051] rmdir("./553" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11582] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11581] <... symlink resumed>) = 0 [pid 11578] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11578] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11582] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11578] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11581] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... rmdir resumed>) = 0 [pid 5049] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11582] <... fcntl resumed>) = 0 [pid 11581] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./525", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11581] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./541/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11582] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./554", 0777 [pid 5047] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11582] <... futex resumed>) = 1 [pid 11578] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11582] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11581] <... symlink resumed>) = 0 [pid 11578] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11578] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 11582] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11578] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./541/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11582] <... openat resumed>) = 4 [pid 11581] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./538/cgroup.cpu" [pid 5045] newfstatat(3, "", [pid 11582] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11578] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11581] write(3, "1000", 4 [pid 5049] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11583 attached [pid 11581] <... write resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11582] +++ killed by SIGIO +++ [pid 11581] close(3 [pid 5049] newfstatat(AT_FDCWD, "./541/cgroup", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11581] <... close resumed>) = 0 [pid 5047] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11583] set_robust_list(0x555556ac56a0, 24 [pid 11581] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1110 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./525/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11583] <... set_robust_list resumed>) = 0 [pid 11581] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11581] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./541/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./525/cgroup.cpu", [pid 11581] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11581] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./538/binderfs", [pid 11581] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11583] chdir("./554" [pid 11581] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] unlink("./525/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11581] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11583] <... chdir resumed>) = 0 [pid 11581] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./538/binderfs" [pid 11583] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11581] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./525/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11583] <... prctl resumed>) = 0 [pid 11581] <... mprotect resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11583] setpgid(0, 0 [pid 11581] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11583] <... setpgid resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11581] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./525/binderfs", [pid 11583] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11581] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./538/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11583] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11584 attached [pid 11581] <... clone3 resumed> => {parent_tid=[1077]}, 88) = 1077 [pid 5049] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./525/binderfs" [pid 11584] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11581] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11584] <... rseq resumed>) = 0 [pid 11581] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 11583] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11578] +++ killed by SIGIO +++ [pid 5047] unlink("./538/cgroup" [pid 11584] set_robust_list(0x7f504ff7f9a0, 24 [pid 11581] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./525/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11584] <... set_robust_list resumed>) = 0 [pid 11581] <... futex resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1111, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] unlink("./541/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11584] rt_sigprocmask(SIG_SETMASK, [], [pid 11583] <... symlink resumed>) = 0 [pid 11581] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11584] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11583] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./525/cgroup", [pid 11584] open(".", O_RDONLY [pid 11583] <... symlink resumed>) = 0 [pid 11584] <... open resumed>) = 3 [pid 11583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11584] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./525/cgroup" [pid 11584] <... futex resumed>) = 1 [pid 11583] <... openat resumed>) = 3 [pid 11581] <... futex resumed>) = 0 [pid 5050] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] unlink("./538/blkio.bfq.io_wait_time_recursive" [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11584] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11581] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11583] write(3, "1000", 4 [pid 11581] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./525/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11584] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11583] <... write resumed>) = 4 [pid 11581] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... openat resumed>) = 3 [pid 11584] <... fcntl resumed>) = 0 [pid 11583] close(3 [pid 5050] newfstatat(3, "", [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11584] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11583] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] rmdir("./541" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11584] <... futex resumed>) = 1 [pid 11583] symlink("/dev/binderfs", "./binderfs" [pid 11581] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./525/blkio.bfq.io_wait_time_recursive", [pid 11584] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11583] <... symlink resumed>) = 0 [pid 11581] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./538/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./554/cgroup.cpu" [pid 5049] <... rmdir resumed>) = 0 [pid 11584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11583] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11581] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./542", 0777 [pid 5047] getdents64(3, [pid 5045] unlink("./525/blkio.bfq.io_wait_time_recursive" [pid 11584] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11583] <... futex resumed>) = 0 [pid 11581] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11583] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11583] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./554/binderfs", [pid 11584] <... openat resumed>) = 4 [pid 11583] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11581] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] umount2("./525/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11583] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] rmdir("./538" [pid 5050] unlink("./554/binderfs" [pid 5047] <... rmdir resumed>) = 0 [pid 11584] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11581] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11584] <... futex resumed>) = 0 [pid 5047] mkdir("./539", 0777 [pid 5045] newfstatat(AT_FDCWD, "./525/cgroup.net", [pid 5050] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11584] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./554/cgroup", [pid 5047] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11583] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./554/cgroup" [pid 11583] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... unlink resumed>) = 0 [pid 5050] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 5045] unlink("./525/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./554/blkio.bfq.io_wait_time_recursive") = 0 [pid 5050] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11583] <... mprotect resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./554/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./554/cgroup.net") = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 ./strace-static-x86_64: Process 11586 attached [pid 5050] rmdir("./554"./strace-static-x86_64: Process 11585 attached [pid 11586] set_robust_list(0x555556ac56a0, 24 [pid 11583] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... rmdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11583] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11583] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11587 attached [pid 11586] <... set_robust_list resumed>) = 0 [pid 11585] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1080 [pid 11587] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11586] chdir("./542" [pid 11585] <... set_robust_list resumed>) = 0 [pid 5050] mkdir("./555", 0777 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1086 [pid 5045] close(3 [pid 11587] <... rseq resumed>) = 0 [pid 11583] <... clone3 resumed> => {parent_tid=[1111]}, 88) = 1111 [pid 11581] +++ killed by SIGIO +++ [pid 11583] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... close resumed>) = 0 [pid 11583] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1076, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11583] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] rmdir("./525" [pid 11587] set_robust_list(0x7f504ff7f9a0, 24 [pid 11586] <... chdir resumed>) = 0 [pid 11585] chdir("./539" [pid 11583] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11587] <... set_robust_list resumed>) = 0 [pid 11586] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11585] <... chdir resumed>) = 0 [pid 11586] <... prctl resumed>) = 0 [pid 11587] rt_sigprocmask(SIG_SETMASK, [], [pid 11586] setpgid(0, 0 [pid 11587] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11586] <... setpgid resumed>) = 0 [pid 11585] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11583] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./526", 0777 [pid 11587] open(".", O_RDONLY [pid 11586] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11585] <... prctl resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11587] <... open resumed>) = 3 [pid 11585] setpgid(0, 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... mkdir resumed>) = 0 [pid 11587] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11585] <... setpgid resumed>) = 0 [pid 5046] newfstatat(3, "", ./strace-static-x86_64: Process 11588 attached [pid 11587] <... futex resumed>) = 1 [pid 11586] <... symlink resumed>) = 0 [pid 11585] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11583] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11588] set_robust_list(0x555556ac56a0, 24 [pid 11587] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] getdents64(3, [pid 11588] <... set_robust_list resumed>) = 0 [pid 11587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11586] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11585] <... symlink resumed>) = 0 [pid 11583] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1113 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11588] chdir("./555" [pid 11585] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11583] <... futex resumed>) = 0 [pid 11583] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11588] <... chdir resumed>) = 0 [pid 11587] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11586] <... symlink resumed>) = 0 [pid 11585] <... symlink resumed>) = 0 [pid 5046] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11589 attached [pid 11588] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11587] <... fcntl resumed>) = 0 [pid 11586] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11585] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11589] set_robust_list(0x555556ac56a0, 24 [pid 11588] <... prctl resumed>) = 0 [pid 11587] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11586] <... symlink resumed>) = 0 [pid 11585] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1054 [pid 11589] <... set_robust_list resumed>) = 0 [pid 11588] setpgid(0, 0 [pid 11587] <... futex resumed>) = 1 [pid 11586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11583] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11589] chdir("./526" [pid 11588] <... setpgid resumed>) = 0 [pid 11587] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11586] <... openat resumed>) = 3 [pid 11585] <... openat resumed>) = 3 [pid 11583] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11589] <... chdir resumed>) = 0 [pid 11585] write(3, "1000", 4 [pid 11583] <... futex resumed>) = 0 [pid 11589] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11586] write(3, "1000", 4 [pid 11585] <... write resumed>) = 4 [pid 11583] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11589] <... prctl resumed>) = 0 [pid 11588] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11586] <... write resumed>) = 4 [pid 11585] close(3 [pid 5046] unlink("./537/cgroup.cpu" [pid 11589] setpgid(0, 0 [pid 11587] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11586] close(3 [pid 11585] <... close resumed>) = 0 [pid 11589] <... setpgid resumed>) = 0 [pid 11585] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 11589] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11587] <... openat resumed>) = 4 [pid 11585] <... symlink resumed>) = 0 [pid 11588] <... symlink resumed>) = 0 [pid 11589] <... symlink resumed>) = 0 [pid 11588] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11587] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11586] <... close resumed>) = 0 [pid 11585] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11589] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11586] symlink("/dev/binderfs", "./binderfs" [pid 11585] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11583] <... futex resumed>) = ? [pid 11586] <... symlink resumed>) = 0 [pid 11585] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] newfstatat(AT_FDCWD, "./537/binderfs", [pid 11586] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11588] <... symlink resumed>) = 0 [pid 11589] <... symlink resumed>) = 0 [pid 11586] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11588] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11586] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11585] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] unlink("./537/binderfs" [pid 11589] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11586] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11585] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11585] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11589] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11588] <... symlink resumed>) = 0 [pid 11588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11588] <... openat resumed>) = 3 [pid 11587] +++ killed by SIGIO +++ [pid 11586] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11583] +++ killed by SIGIO +++ [pid 5046] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11588] write(3, "1000", 4 [pid 11586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11585] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11586] <... mmap resumed>) = 0x7f504ff5f000 [pid 11585] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] newfstatat(AT_FDCWD, "./537/cgroup", [pid 11588] <... write resumed>) = 4 [pid 11586] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1110, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11588] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11588] <... close resumed>) = 0 [pid 5051] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./537/cgroup") = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11588] symlink("/dev/binderfs", "./binderfs" [pid 11586] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11589] <... openat resumed>) = 3 [pid 11588] <... symlink resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11586] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 11589] write(3, "1000", 4 [pid 11586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11585] <... mprotect resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 11589] <... write resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11589] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 11589] <... close resumed>) = 0 [pid 11589] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11589] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11589] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11589] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11589] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11589] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 11590 attached [pid 5051] getdents64(3, [pid 11590] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11586] <... clone3 resumed> => {parent_tid=[1087]}, 88) = 1087 [pid 11585] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11590] <... rseq resumed>) = 0 [pid 11589] <... mprotect resumed>) = 0 [pid 11588] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11586] rt_sigprocmask(SIG_SETMASK, [], [pid 11585] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11590] set_robust_list(0x7f504ff7f9a0, 24 [pid 11588] <... futex resumed>) = 0 [pid 11586] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 11590] <... set_robust_list resumed>) = 0 [pid 11589] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11588] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11586] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11591 attached [pid 11590] rt_sigprocmask(SIG_SETMASK, [], [pid 11589] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11588] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11586] <... futex resumed>) = 0 [pid 5051] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11591] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11590] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11589] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11586] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11585] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 11591] <... rseq resumed>) = 0 [pid 11590] open(".", O_RDONLY [pid 11588] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./537/cgroup.net"./strace-static-x86_64: Process 11592 attached [pid 11591] set_robust_list(0x7f504ff7f9a0, 24 [pid 11590] <... open resumed>) = 3 [pid 11589] <... clone3 resumed> => {parent_tid=[1055]}, 88) = 1055 [pid 11588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11592] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11591] <... set_robust_list resumed>) = 0 [pid 11590] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11589] rt_sigprocmask(SIG_SETMASK, [], [pid 11588] <... mmap resumed>) = 0x7f504ff5f000 [pid 11592] <... rseq resumed>) = 0 [pid 11591] rt_sigprocmask(SIG_SETMASK, [], [pid 11590] <... futex resumed>) = 1 [pid 11589] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11586] <... futex resumed>) = 0 [pid 11592] set_robust_list(0x7f504ff7f9a0, 24 [pid 11591] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11590] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11589] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11588] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11586] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11592] <... set_robust_list resumed>) = 0 [pid 11591] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11589] <... futex resumed>) = 0 [pid 11588] <... mprotect resumed>) = 0 [pid 11586] <... futex resumed>) = 0 [pid 11592] rt_sigprocmask(SIG_SETMASK, [], [pid 11590] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11589] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11586] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11592] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11590] <... fcntl resumed>) = 0 [pid 11588] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11592] open(".", O_RDONLY [pid 11590] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11590] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5046] <... unlink resumed>) = 0 [pid 11585] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 5046] getdents64(3, [pid 11585] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11592] <... open resumed>) = 3 [pid 11588] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11586] <... futex resumed>) = 0 [pid 11585] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11592] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11591] <... futex resumed>) = 0 [pid 11588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11586] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11585] <... futex resumed>) = 1 [pid 5051] unlink("./554/cgroup.cpu" [pid 5046] close(3./strace-static-x86_64: Process 11593 attached [pid 11592] <... futex resumed>) = 1 [pid 11591] open(".", O_RDONLY [pid 11589] <... futex resumed>) = 0 [pid 11585] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11593] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11592] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11591] <... open resumed>) = 3 [pid 11590] <... futex resumed>) = 0 [pid 11586] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 11593] <... rseq resumed>) = 0 [pid 11592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11590] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11589] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11586] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... close resumed>) = 0 [pid 11593] set_robust_list(0x7f504ff7f9a0, 24 [pid 11592] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11591] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11590] <... openat resumed>) = 4 [pid 11589] <... futex resumed>) = 0 [pid 11588] <... clone3 resumed> => {parent_tid=[1114]}, 88) = 1114 [pid 5051] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./537" [pid 11593] <... set_robust_list resumed>) = 0 [pid 11592] <... fcntl resumed>) = 0 [pid 11591] <... futex resumed>) = 1 [pid 11590] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11589] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11586] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 11585] <... futex resumed>) = 0 [pid 11592] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11591] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11589] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11585] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11593] rt_sigprocmask(SIG_SETMASK, [], [pid 11592] <... futex resumed>) = 0 [pid 11591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11590] +++ killed by SIGIO +++ [pid 11589] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11588] rt_sigprocmask(SIG_SETMASK, [], [pid 11586] +++ killed by SIGIO +++ [pid 11585] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1086, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... rmdir resumed>) = 0 [pid 11593] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11592] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11591] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11589] <... futex resumed>) = 0 [pid 11588] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11585] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11593] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11592] <... openat resumed>) = 4 [pid 11591] <... fcntl resumed>) = 0 [pid 11589] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./554/binderfs", [pid 5046] mkdir("./538", 0777 [pid 11593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11588] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11591] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./554/binderfs" [pid 11593] open(".", O_RDONLY [pid 11588] <... futex resumed>) = 0 [pid 11593] <... open resumed>) = 3 [pid 11588] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11593] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11588] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11591] <... futex resumed>) = 1 [pid 11585] <... futex resumed>) = 0 [pid 5051] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11593] <... futex resumed>) = 0 [pid 11592] +++ killed by SIGIO +++ [pid 11591] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11589] +++ killed by SIGIO +++ [pid 11588] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11585] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11585] <... futex resumed>) = 0 [pid 11591] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11585] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11591] <... openat resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11591] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11585] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11585] restart_syscall(<... resuming interrupted futex ...> [pid 11591] +++ killed by SIGIO +++ [pid 11585] <... restart_syscall resumed>) = ? ./strace-static-x86_64: Process 11594 attached [pid 11593] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11588] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./554/cgroup", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1054, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11593] <... fcntl resumed>) = 0 [pid 11594] set_robust_list(0x555556ac56a0, 24 [pid 11593] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11588] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11594] <... set_robust_list resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11594] chdir("./538" [pid 11593] <... futex resumed>) = 0 [pid 11588] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... openat resumed>) = 3 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11594] <... chdir resumed>) = 0 [pid 11593] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11588] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11585] +++ killed by SIGIO +++ [pid 5051] unlink("./554/cgroup" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1078 [pid 11594] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11588] <... futex resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5045] <... restart_syscall resumed>) = 0 [pid 11594] <... prctl resumed>) = 0 [pid 11594] setpgid(0, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1080, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11594] <... setpgid resumed>) = 0 [pid 11593] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11588] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11594] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5045] umount2("./526", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... restart_syscall resumed>) = 0 [pid 5049] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] <... symlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] openat(AT_FDCWD, "./526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11594] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(3, "", [pid 11594] <... symlink resumed>) = 0 [pid 11593] <... openat resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 5049] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 5047] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11594] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] unlink("./554/blkio.bfq.io_wait_time_recursive" [pid 11593] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] unlink("./542/cgroup.cpu" [pid 5047] <... openat resumed>) = 3 [pid 5045] getdents64(3, [pid 11588] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11593] +++ killed by SIGIO +++ [pid 11594] <... symlink resumed>) = 0 [pid 5051] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./526/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./526/cgroup.cpu", [pid 5047] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 5045] unlink("./526/cgroup.cpu" [pid 11594] <... openat resumed>) = 3 [pid 5049] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11594] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./542/binderfs", [pid 5051] newfstatat(AT_FDCWD, "./554/cgroup.net", [pid 5047] unlink("./539/cgroup.cpu" [pid 11594] <... write resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./526/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] close(3 [pid 5051] unlink("./554/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] <... close resumed>) = 0 [pid 5049] unlink("./542/binderfs" [pid 5047] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./526/binderfs", [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11594] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./539/binderfs", [pid 5045] unlink("./526/binderfs" [pid 11594] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] unlink("./539/binderfs" [pid 11588] +++ killed by SIGIO +++ [pid 11594] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5049] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./526/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] close(3 [pid 5049] newfstatat(AT_FDCWD, "./542/cgroup", [pid 5047] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1113, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... close resumed>) = 0 [pid 5049] unlink("./542/cgroup" [pid 11594] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./539/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./526/cgroup", [pid 5051] rmdir("./554" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] unlink("./539/cgroup" [pid 5045] unlink("./526/cgroup" [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11594] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./526/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11594] <... mprotect resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./526/blkio.bfq.io_wait_time_recursive", [pid 11594] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] mkdir("./555", 0777 [pid 5050] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", [pid 11594] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./526/blkio.bfq.io_wait_time_recursive" [pid 11594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11595 attached [pid 5050] <... openat resumed>) = 3 [pid 5049] unlink("./542/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11595] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11594] <... clone3 resumed> => {parent_tid=[1079]}, 88) = 1079 [pid 5050] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11595] <... rseq resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 11595] set_robust_list(0x7f504ff7f9a0, 24 [pid 11594] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11595] <... set_robust_list resumed>) = 0 [pid 11594] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./526/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11595] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] getdents64(3, [pid 5049] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11595] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11595] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] unlink("./539/cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./526/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./526/cgroup.net" [pid 5047] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3./strace-static-x86_64: Process 11596 attached [pid 11596] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... close resumed>) = 0 [pid 5045] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11596] <... set_robust_list resumed>) = 0 [pid 11595] <... futex resumed>) = 0 [pid 11594] <... futex resumed>) = 1 [pid 5049] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 5047] rmdir("./539" [pid 5050] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11596] chdir("./555" [pid 11595] open(".", O_RDONLY [pid 11594] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1112 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 5049] unlink("./542/cgroup.net" [pid 5047] <... rmdir resumed>) = 0 [pid 11596] <... chdir resumed>) = 0 [pid 11595] <... open resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 5050] unlink("./555/cgroup.cpu" [pid 5049] getdents64(3, [pid 11595] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] mkdir("./540", 0777 [pid 5045] <... close resumed>) = 0 [pid 5050] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./555/binderfs", [pid 5047] <... mkdir resumed>) = 0 [pid 5045] rmdir("./526" [pid 11596] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11595] <... futex resumed>) = 1 [pid 11594] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./542" [pid 11594] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] unlink("./555/binderfs" [pid 5049] <... rmdir resumed>) = 0 [pid 11596] <... prctl resumed>) = 0 [pid 11595] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11594] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... rmdir resumed>) = 0 [pid 11596] setpgid(0, 0 [pid 11595] <... fcntl resumed>) = 0 [pid 5050] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./555/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./543", 0777 [pid 5050] unlink("./555/cgroup" [pid 5049] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] mkdir("./527", 0777 [pid 11596] <... setpgid resumed>) = 0 [pid 11595] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1082 [pid 11595] <... futex resumed>) = 1 ./strace-static-x86_64: Process 11597 attached [pid 11594] <... futex resumed>) = 0 [pid 5050] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11597] set_robust_list(0x555556ac56a0, 24 [pid 11594] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11594] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", [pid 11597] <... set_robust_list resumed>) = 0 [pid 11595] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11594] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11597] chdir("./540" [pid 5050] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 11595] <... openat resumed>) = 4 [pid 11596] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 11597] <... chdir resumed>) = 0 [pid 11597] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11597] <... prctl resumed>) = 0 [pid 11597] setpgid(0, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11597] <... setpgid resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./555/cgroup.net", [pid 11597] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./555/cgroup.net") = 0 [pid 11596] <... symlink resumed>) = 0 [pid 11595] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- ./strace-static-x86_64: Process 11598 attached [pid 11597] <... symlink resumed>) = 0 [pid 11596] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11594] <... futex resumed>) = ? [pid 5050] getdents64(3, [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1088 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11598] set_robust_list(0x555556ac56a0, 24 [pid 11596] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11598] <... set_robust_list resumed>) = 0 [pid 5050] close(3 [pid 11598] chdir("./543" [pid 5050] <... close resumed>) = 0 [pid 5050] rmdir("./555") = 0 [pid 11598] <... chdir resumed>) = 0 [pid 11598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11598] setpgid(0, 0) = 0 [pid 5050] mkdir("./556", 0777 [pid 11598] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] <... mkdir resumed>) = 0 [pid 11596] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11598] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11596] <... symlink resumed>) = 0 [pid 11597] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11598] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11597] <... symlink resumed>) = 0 [pid 11596] <... openat resumed>) = 3 [pid 11598] <... symlink resumed>) = 0 [pid 11596] write(3, "1000", 4 [pid 11597] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1056 [pid 11596] <... write resumed>) = 4 ./strace-static-x86_64: Process 11599 attached [pid 11599] set_robust_list(0x555556ac56a0, 24 [pid 11597] <... symlink resumed>) = 0 [pid 11599] <... set_robust_list resumed>) = 0 [pid 11596] close(3 [pid 11597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11599] chdir("./527" [pid 11598] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11596] <... close resumed>) = 0 ./strace-static-x86_64: Process 11600 attached [pid 11599] <... chdir resumed>) = 0 [pid 11598] <... symlink resumed>) = 0 [pid 11600] set_robust_list(0x555556ac56a0, 24 [pid 11599] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11597] <... openat resumed>) = 3 [pid 11596] symlink("/dev/binderfs", "./binderfs" [pid 11595] +++ killed by SIGIO +++ [pid 11594] +++ killed by SIGIO +++ [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1115 [pid 11600] <... set_robust_list resumed>) = 0 [pid 11599] <... prctl resumed>) = 0 [pid 11598] <... openat resumed>) = 3 [pid 11597] write(3, "1000", 4 [pid 11596] <... symlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1078, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11600] chdir("./556" [pid 11599] setpgid(0, 0 [pid 11597] <... write resumed>) = 4 [pid 11596] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11600] <... chdir resumed>) = 0 [pid 11599] <... setpgid resumed>) = 0 [pid 11598] write(3, "1000", 4 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11599] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11598] <... write resumed>) = 4 [pid 11597] close(3 [pid 11596] <... futex resumed>) = 0 [pid 11600] <... prctl resumed>) = 0 [pid 11599] <... symlink resumed>) = 0 [pid 11598] close(3 [pid 11597] <... close resumed>) = 0 [pid 11596] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11600] setpgid(0, 0 [pid 11599] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11598] <... close resumed>) = 0 [pid 11597] symlink("/dev/binderfs", "./binderfs" [pid 11596] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11600] <... setpgid resumed>) = 0 [pid 11599] <... symlink resumed>) = 0 [pid 11598] symlink("/dev/binderfs", "./binderfs" [pid 5046] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11600] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11599] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11598] <... symlink resumed>) = 0 [pid 11597] <... symlink resumed>) = 0 [pid 11596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11597] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11596] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11597] <... futex resumed>) = 0 [pid 11596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11597] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11596] <... mmap resumed>) = 0x7f504ff5f000 [pid 11600] <... symlink resumed>) = 0 [pid 11597] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11599] <... symlink resumed>) = 0 [pid 11598] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11600] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11598] <... futex resumed>) = 0 [pid 11597] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11596] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... openat resumed>) = 3 [pid 11600] <... symlink resumed>) = 0 [pid 11598] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11597] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11596] <... mprotect resumed>) = 0 [pid 11600] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11599] <... openat resumed>) = 3 [pid 11598] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11597] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] newfstatat(3, "", [pid 11598] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11600] <... symlink resumed>) = 0 [pid 11598] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11596] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11599] write(3, "1000", 4 [pid 11598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] getdents64(3, [pid 11600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11599] <... write resumed>) = 4 [pid 11598] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11600] <... openat resumed>) = 3 [pid 11599] close(3 [pid 11598] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11597] <... mmap resumed>) = 0x7f504ff5f000 [pid 11596] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11600] write(3, "1000", 4 [pid 11599] <... close resumed>) = 0 [pid 11597] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11600] <... write resumed>) = 4 [pid 11599] symlink("/dev/binderfs", "./binderfs" [pid 11598] <... mprotect resumed>) = 0 [pid 11597] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 11601 attached [pid 11600] close(3 [pid 11598] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11601] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11600] <... close resumed>) = 0 [pid 11601] <... rseq resumed>) = 0 [pid 11601] set_robust_list(0x7f504ff7f9a0, 24 [pid 11597] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11601] <... set_robust_list resumed>) = 0 [pid 11600] symlink("/dev/binderfs", "./binderfs" [pid 11598] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11601] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 11597] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11601] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11600] <... symlink resumed>) = 0 [pid 11599] <... symlink resumed>) = 0 [pid 11598] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11597] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11596] <... clone3 resumed> => {parent_tid=[1113]}, 88) = 1113 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11603 attached ./strace-static-x86_64: Process 11602 attached [pid 11601] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11600] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11599] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11596] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] unlink("./538/cgroup.cpu" [pid 11603] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11602] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11600] <... futex resumed>) = 0 [pid 11599] <... futex resumed>) = 0 [pid 11598] <... clone3 resumed> => {parent_tid=[1089]}, 88) = 1089 [pid 11596] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11603] <... rseq resumed>) = 0 [pid 11602] <... rseq resumed>) = 0 [pid 11600] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11599] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11598] rt_sigprocmask(SIG_SETMASK, [], [pid 11596] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11603] set_robust_list(0x7f504ff7f9a0, 24 [pid 11602] set_robust_list(0x7f504ff7f9a0, 24 [pid 11600] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11599] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11598] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11596] <... futex resumed>) = 1 [pid 11601] <... futex resumed>) = 0 [pid 11603] <... set_robust_list resumed>) = 0 [pid 11602] <... set_robust_list resumed>) = 0 [pid 11600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11599] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11598] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11596] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11603] rt_sigprocmask(SIG_SETMASK, [], [pid 11602] rt_sigprocmask(SIG_SETMASK, [], [pid 11601] open(".", O_RDONLY [pid 11600] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11599] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11598] <... futex resumed>) = 0 [pid 11603] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11602] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11598] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11603] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11602] open(".", O_RDONLY [pid 11601] <... open resumed>) = 3 [pid 11600] <... mmap resumed>) = 0x7f504ff5f000 [pid 11599] <... mmap resumed>) = 0x7f504ff5f000 [pid 11597] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 5046] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11602] <... open resumed>) = 3 [pid 11601] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11600] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11599] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11597] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11602] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11601] <... futex resumed>) = 1 [pid 11600] <... mprotect resumed>) = 0 [pid 11599] <... mprotect resumed>) = 0 [pid 11597] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11596] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./538/binderfs", [pid 11602] <... futex resumed>) = 1 [pid 11601] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11600] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11599] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11598] <... futex resumed>) = 0 [pid 11597] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11596] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11603] <... futex resumed>) = 0 [pid 11602] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11601] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11600] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11599] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11598] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11597] <... futex resumed>) = 1 [pid 11596] <... futex resumed>) = 0 [pid 5046] unlink("./538/binderfs" [pid 11603] open(".", O_RDONLY [pid 11602] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11601] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11599] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11598] <... futex resumed>) = 0 [pid 11597] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11596] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 11602] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11601] <... fcntl resumed>) = 0 [pid 11598] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11602] <... fcntl resumed>) = 0 [pid 11603] <... open resumed>) = 3 [pid 11601] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11596] <... futex resumed>) = 0 [pid 11602] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./538/cgroup", ./strace-static-x86_64: Process 11604 attached {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11604] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11604] set_robust_list(0x7f504ff7f9a0, 24 [pid 5046] unlink("./538/cgroup" [pid 11604] <... set_robust_list resumed>) = 0 [pid 11602] <... futex resumed>) = 1 [pid 11601] <... futex resumed>) = 1 [pid 11596] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11605 attached [pid 11604] rt_sigprocmask(SIG_SETMASK, [], [pid 11603] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11602] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11601] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11598] <... futex resumed>) = 0 [pid 11596] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11605] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11604] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11603] <... futex resumed>) = 1 [pid 11598] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11597] <... futex resumed>) = 0 [pid 11596] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11605] <... rseq resumed>) = 0 [pid 11604] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11603] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11602] <... futex resumed>) = 0 [pid 11600] <... clone3 resumed> => {parent_tid=[1116]}, 88) = 1116 [pid 11599] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 [pid 11598] <... futex resumed>) = 1 [pid 11597] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11605] set_robust_list(0x7f504ff7f9a0, 24 [pid 11603] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11602] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11600] rt_sigprocmask(SIG_SETMASK, [], [pid 11599] rt_sigprocmask(SIG_SETMASK, [], [pid 11598] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11597] <... futex resumed>) = 0 [pid 11596] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11605] <... set_robust_list resumed>) = 0 [pid 11603] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11602] <... openat resumed>) = 4 [pid 11601] <... openat resumed>) = 4 [pid 11600] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11599] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11598] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11597] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11596] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11605] rt_sigprocmask(SIG_SETMASK, [], [pid 11603] <... fcntl resumed>) = 0 [pid 11602] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11600] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11599] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11598] ???( [pid 5046] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", [pid 11605] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11604] <... futex resumed>) = 0 [pid 11603] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11601] +++ killed by SIGIO +++ [pid 11600] <... futex resumed>) = 1 [pid 11599] <... futex resumed>) = 0 [pid 11598] <... ??? resumed>) = ? [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11603] <... futex resumed>) = 1 [pid 11602] +++ killed by SIGIO +++ [pid 11599] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11597] <... futex resumed>) = 0 [pid 11605] open(".", O_RDONLY [pid 11600] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11597] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./538/blkio.bfq.io_wait_time_recursive" [pid 11605] <... open resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 11605] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11605] <... futex resumed>) = 1 [pid 11604] open(".", O_RDONLY [pid 11603] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11599] <... futex resumed>) = 0 [pid 11597] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11596] +++ killed by SIGIO +++ [pid 11605] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5046] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 11603] <... openat resumed>) = 4 [pid 11599] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11597] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11605] <... futex resumed>) = 0 [pid 11604] <... open resumed>) = 3 [pid 11599] <... futex resumed>) = 1 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1112, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11605] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11604] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11603] +++ killed by SIGIO +++ [pid 11599] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11598] +++ killed by SIGIO +++ [pid 5046] unlink("./538/cgroup.net" [pid 11605] <... fcntl resumed>) = 0 [pid 11597] +++ killed by SIGIO +++ [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1088, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11605] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11604] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 11605] <... futex resumed>) = 1 [pid 11604] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11600] <... futex resumed>) = 0 [pid 5049] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1082, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11605] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11599] <... futex resumed>) = 0 [pid 5051] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11599] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11599] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11600] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11599] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5049] <... openat resumed>) = 3 [pid 5046] getdents64(3, [pid 11605] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11604] <... futex resumed>) = 0 [pid 11600] <... futex resumed>) = 1 [pid 5051] <... openat resumed>) = 3 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11604] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] newfstatat(3, "", [pid 11604] <... fcntl resumed>) = 0 [pid 11605] <... openat resumed>) = 4 [pid 11600] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] close(3 [pid 11605] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11604] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11604] <... futex resumed>) = 0 [pid 11600] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11599] <... futex resumed>) = ? [pid 5051] getdents64(3, [pid 5049] getdents64(3, [pid 5046] <... close resumed>) = 0 [pid 11604] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11600] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11600] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 5051] unlink("./555/cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11604] <... openat resumed>) = 4 [pid 5049] unlink("./543/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./538" [pid 5051] <... unlink resumed>) = 0 [pid 11605] +++ killed by SIGIO +++ [pid 11599] +++ killed by SIGIO +++ [pid 5051] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] newfstatat(AT_FDCWD, "./555/binderfs", [pid 11604] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5051] unlink("./555/binderfs" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1056, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] newfstatat(AT_FDCWD, "./543/binderfs", [pid 5047] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./527", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./543/binderfs" [pid 5047] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11600] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11604] +++ killed by SIGIO +++ [pid 5049] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./540/cgroup.cpu" [pid 5046] mkdir("./539", 0777 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5051] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./543/cgroup", [pid 5047] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] newfstatat(AT_FDCWD, "./555/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./540/binderfs", [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 11606 attached [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./543/cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11600] +++ killed by SIGIO +++ [pid 5051] unlink("./555/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1115, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 11606] set_robust_list(0x555556ac56a0, 24 [pid 5051] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./540/binderfs" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11606] <... set_robust_list resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./527/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11606] chdir("./539" [pid 5051] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", [pid 5047] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./527/cgroup.cpu", [pid 5049] unlink("./543/blkio.bfq.io_wait_time_recursive" [pid 5047] newfstatat(AT_FDCWD, "./540/cgroup", [pid 11606] <... chdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11606] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11606] <... prctl resumed>) = 0 [pid 5051] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1080 [pid 5047] unlink("./540/cgroup" [pid 5045] unlink("./527/cgroup.cpu" [pid 11606] setpgid(0, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./543/cgroup.net", [pid 11606] <... setpgid resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./555/cgroup.net", [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./543/cgroup.net" [pid 11606] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] newfstatat(3, "", [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./555/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./527/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 11606] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11606] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] getdents64(3, [pid 5050] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... close resumed>) = 0 [pid 5047] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./527/binderfs", [pid 11606] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5049] rmdir("./543" [pid 11606] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] close(3 [pid 5050] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 5047] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5045] unlink("./527/binderfs" [pid 5049] mkdir("./544", 0777 [pid 11606] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5050] unlink("./556/cgroup.cpu" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... unlink resumed>) = 0 [pid 5051] rmdir("./555" [pid 5047] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 11606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 11606] <... openat resumed>) = 3 [pid 5051] mkdir("./556", 0777 [pid 5050] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./540/cgroup.net" [pid 5045] umount2("./527/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11607 attached [pid 11607] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11606] write(3, "1000", 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11607] <... set_robust_list resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./556/binderfs", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1090 [pid 11606] <... write resumed>) = 4 [pid 5045] newfstatat(AT_FDCWD, "./527/cgroup", [pid 11607] chdir("./544" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11607] <... chdir resumed>) = 0 [pid 11606] close(3 [pid 5047] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11607] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11606] <... close resumed>) = 0 [pid 11607] <... prctl resumed>) = 0 [pid 11606] symlink("/dev/binderfs", "./binderfs" [pid 5050] unlink("./556/binderfs" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./527/cgroup" [pid 11607] setpgid(0, 0) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11607] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 11607] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11607] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11606] <... symlink resumed>) = 0 [pid 5047] close(3 [pid 11607] <... symlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./527/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11606] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] rmdir("./540" [pid 11607] symlink("/syzcgroup/net/syz3", "./cgroup.net") = 0 [pid 11607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11607] <... openat resumed>) = 3 [pid 11607] write(3, "1000", 4) = 4 [pid 11607] close(3) = 0 [pid 11607] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 11608 attached ) = 0 [pid 11606] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./527/blkio.bfq.io_wait_time_recursive", [pid 11608] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11608] chdir("./556" [pid 11606] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11608] <... chdir resumed>) = 0 [pid 11607] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11606] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1114 [pid 5050] newfstatat(AT_FDCWD, "./556/cgroup", [pid 5047] mkdir("./541", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11608] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11607] <... futex resumed>) = 0 [pid 11606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11608] <... prctl resumed>) = 0 [pid 11607] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11608] setpgid(0, 0 [pid 11607] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11606] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] unlink("./527/blkio.bfq.io_wait_time_recursive" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11608] <... setpgid resumed>) = 0 [pid 11607] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11607] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11608] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11607] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11606] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] unlink("./556/cgroup" [pid 11608] <... symlink resumed>) = 0 [pid 11607] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 11608] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11607] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11606] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./527/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11608] <... symlink resumed>) = 0 [pid 11607] <... mprotect resumed>) = 0 [pid 11606] <... mprotect resumed>) = 0 [pid 11608] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11607] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11608] <... symlink resumed>) = 0 [pid 11606] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./527/cgroup.net", [pid 5050] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 11608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11607] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11607] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11606] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11608] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11609 attached [pid 11608] write(3, "1000", 4 [pid 11609] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11608] <... write resumed>) = 4 [pid 11607] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 11606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./527/cgroup.net" [pid 11609] <... rseq resumed>) = 0 [pid 11608] close(3 [pid 11607] rt_sigprocmask(SIG_SETMASK, [], [pid 11609] set_robust_list(0x7f504ff7f9a0, 24 [pid 11608] <... close resumed>) = 0 [pid 11609] <... set_robust_list resumed>) = 0 [pid 11608] symlink("/dev/binderfs", "./binderfs" [pid 11607] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11610 attached [pid 11609] rt_sigprocmask(SIG_SETMASK, [], [pid 11608] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 11610] set_robust_list(0x555556ac56a0, 24 [pid 11609] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11607] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1084 ./strace-static-x86_64: Process 11611 attached [pid 11610] <... set_robust_list resumed>) = 0 [pid 11609] open(".", O_RDONLY [pid 11608] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11606] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11611] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11610] chdir("./541" [pid 11609] <... open resumed>) = 3 [pid 11607] <... futex resumed>) = 0 [pid 11606] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 5045] close(3 [pid 11611] <... rseq resumed>) = 0 [pid 11610] <... chdir resumed>) = 0 [pid 11609] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11608] <... futex resumed>) = 0 [pid 11607] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11611] set_robust_list(0x7f504ff7f9a0, 24 [pid 11610] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11609] <... futex resumed>) = 0 [pid 11608] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11606] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./556/cgroup.net" [pid 5045] <... close resumed>) = 0 [pid 11611] <... set_robust_list resumed>) = 0 [pid 11610] <... prctl resumed>) = 0 [pid 11609] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11608] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11607] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11606] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11611] rt_sigprocmask(SIG_SETMASK, [], [pid 11610] setpgid(0, 0 [pid 11609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11607] <... futex resumed>) = 0 [pid 11606] <... futex resumed>) = 0 [pid 5045] rmdir("./527" [pid 11611] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11609] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11608] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11610] <... setpgid resumed>) = 0 [pid 11607] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11606] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11611] open(".", O_RDONLY [pid 11609] <... fcntl resumed>) = 0 [pid 11608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11609] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11608] <... mmap resumed>) = 0x7f504ff5f000 [pid 11609] <... futex resumed>) = 1 [pid 11610] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11611] <... open resumed>) = 3 [pid 11609] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11608] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11607] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 11608] <... mprotect resumed>) = 0 [pid 11607] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11611] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11610] <... symlink resumed>) = 0 [pid 11609] <... futex resumed>) = 0 [pid 11608] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11607] <... futex resumed>) = 1 [pid 11611] <... futex resumed>) = 1 [pid 11610] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11609] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11608] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11607] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11606] <... futex resumed>) = 0 [pid 5050] close(3 [pid 5045] mkdir("./528", 0777 [pid 11611] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11610] <... symlink resumed>) = 0 [pid 11609] <... openat resumed>) = 4 [pid 11608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11607] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11606] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11609] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11606] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 11610] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11606] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] rmdir("./556"./strace-static-x86_64: Process 11612 attached [pid 11611] <... fcntl resumed>) = 0 [pid 11610] <... symlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11609] +++ killed by SIGIO +++ [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11608] <... clone3 resumed> => {parent_tid=[1115]}, 88) = 1115 [pid 5050] <... rmdir resumed>) = 0 [pid 11610] <... openat resumed>) = 3 [pid 5050] mkdir("./557", 0777 [pid 11608] rt_sigprocmask(SIG_SETMASK, [], [pid 11612] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11611] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11610] write(3, "1000", 4 [pid 11608] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 11612] <... rseq resumed>) = 0 [pid 11611] <... futex resumed>) = 1 [pid 11606] <... futex resumed>) = 0 [pid 11612] set_robust_list(0x7f504ff7f9a0, 24 [pid 11611] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11610] <... write resumed>) = 4 [pid 11606] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11612] <... set_robust_list resumed>) = 0 [pid 11611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11610] close(3 [pid 11608] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11606] <... futex resumed>) = 0 [pid 11612] rt_sigprocmask(SIG_SETMASK, [], [pid 11611] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11610] <... close resumed>) = 0 [pid 11608] <... futex resumed>) = 0 [pid 11606] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11611] <... openat resumed>) = 4 [pid 11610] symlink("/dev/binderfs", "./binderfs" [pid 11608] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11610] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11614 attached [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1058 [pid 11612] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11610] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11612] open(".", O_RDONLY [pid 11610] <... futex resumed>) = 0 [pid 11610] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11612] <... open resumed>) = 3 [pid 11614] set_robust_list(0x555556ac56a0, 24 [pid 11612] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11610] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11608] <... futex resumed>) = 0 [pid 11612] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11611] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11608] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11613 attached [pid 11614] <... set_robust_list resumed>) = 0 [pid 11612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11610] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11608] <... futex resumed>) = 0 [pid 11607] +++ killed by SIGIO +++ [pid 11606] <... futex resumed>) = ? [pid 11614] chdir("./528" [pid 11613] set_robust_list(0x555556ac56a0, 24 [pid 11612] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11608] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11613] <... set_robust_list resumed>) = 0 [pid 11610] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1117 [pid 11613] chdir("./557") = 0 [pid 11610] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11613] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11610] <... mprotect resumed>) = 0 [pid 11614] <... chdir resumed>) = 0 [pid 11612] <... fcntl resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1090, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11614] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11613] <... prctl resumed>) = 0 [pid 11612] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11610] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11614] <... prctl resumed>) = 0 [pid 11613] setpgid(0, 0 [pid 11612] <... futex resumed>) = 1 [pid 11608] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11614] setpgid(0, 0 [pid 11613] <... setpgid resumed>) = 0 [pid 11612] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11610] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11608] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11614] <... setpgid resumed>) = 0 [pid 11613] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11608] <... futex resumed>) = 0 [pid 11612] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11614] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11608] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11615 attached [pid 11613] <... symlink resumed>) = 0 [pid 11610] <... clone3 resumed> => {parent_tid=[1085]}, 88) = 1085 [pid 5049] <... openat resumed>) = 3 [pid 11615] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11610] rt_sigprocmask(SIG_SETMASK, [], [pid 11615] <... rseq resumed>) = 0 [pid 11610] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11615] set_robust_list(0x7f504ff7f9a0, 24 [pid 11610] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11615] <... set_robust_list resumed>) = 0 [pid 11610] <... futex resumed>) = 0 [pid 11615] rt_sigprocmask(SIG_SETMASK, [], [pid 11613] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11610] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11615] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11613] <... symlink resumed>) = 0 [pid 11612] <... openat resumed>) = 4 [pid 11615] open(".", O_RDONLY [pid 11614] <... symlink resumed>) = 0 [pid 11615] <... open resumed>) = 3 [pid 11614] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11613] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11612] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11611] +++ killed by SIGIO +++ [pid 11606] +++ killed by SIGIO +++ [pid 5049] newfstatat(3, "", [pid 11615] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11613] <... symlink resumed>) = 0 [pid 11615] <... futex resumed>) = 1 [pid 11614] <... symlink resumed>) = 0 [pid 11610] <... futex resumed>) = 0 [pid 11615] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11614] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11610] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11608] <... futex resumed>) = ? [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1080, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11614] <... symlink resumed>) = 0 [pid 11613] <... openat resumed>) = 3 [pid 11612] +++ killed by SIGIO +++ [pid 5049] getdents64(3, [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11615] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11613] write(3, "1000", 4 [pid 11610] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11615] <... fcntl resumed>) = 0 [pid 11614] <... openat resumed>) = 3 [pid 11613] <... write resumed>) = 4 [pid 11610] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11608] +++ killed by SIGIO +++ [pid 5049] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11615] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11614] write(3, "1000", 4 [pid 11613] close(3 [pid 11610] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1114, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11615] <... futex resumed>) = 0 [pid 11614] <... write resumed>) = 4 [pid 11613] <... close resumed>) = 0 [pid 11610] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./544/cgroup.cpu", [pid 11615] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11613] symlink("/dev/binderfs", "./binderfs" [pid 11610] <... futex resumed>) = 0 [pid 5046] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11614] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11615] <... openat resumed>) = 4 [pid 11614] <... close resumed>) = 0 [pid 11613] <... symlink resumed>) = 0 [pid 11610] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] unlink("./544/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11614] symlink("/dev/binderfs", "./binderfs" [pid 11613] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11615] +++ killed by SIGIO +++ [pid 11614] <... symlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11614] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11613] <... futex resumed>) = 0 [pid 5051] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 11614] <... futex resumed>) = 0 [pid 11613] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(3, "", [pid 11613] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11613] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11614] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11613] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./544/binderfs", [pid 11614] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11610] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11613] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] unlink("./544/binderfs" [pid 5046] getdents64(3, [pid 11614] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11613] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1084, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11613] <... mprotect resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11614] <... mmap resumed>) = 0x7f504ff5f000 [pid 11613] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11614] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11613] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./544/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11614] <... mprotect resumed>) = 0 [pid 11613] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 5047] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./544/cgroup"./strace-static-x86_64: Process 11616 attached [pid 11613] <... clone3 resumed> => {parent_tid=[1118]}, 88) = 1118 [pid 5051] unlink("./556/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11616] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11613] rt_sigprocmask(SIG_SETMASK, [], [pid 11614] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] unlink("./539/cgroup.cpu" [pid 11616] <... rseq resumed>) = 0 [pid 11613] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11616] set_robust_list(0x7f504ff7f9a0, 24 [pid 11613] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... openat resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 11616] <... set_robust_list resumed>) = 0 [pid 11614] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11613] <... futex resumed>) = 0 [pid 11614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11616] rt_sigprocmask(SIG_SETMASK, [], [pid 11613] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 5046] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11617 attached [pid 11616] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11614] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 5051] newfstatat(AT_FDCWD, "./556/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11617] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11616] open(".", O_RDONLY [pid 11614] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11617] <... rseq resumed>) = 0 [pid 11616] <... open resumed>) = 3 [pid 11614] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./556/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] newfstatat(AT_FDCWD, "./539/binderfs", [pid 11617] set_robust_list(0x7f504ff7f9a0, 24 [pid 11614] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11617] <... set_robust_list resumed>) = 0 [pid 11614] <... futex resumed>) = 0 [pid 5049] unlink("./544/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11617] rt_sigprocmask(SIG_SETMASK, [], [pid 11614] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11617] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11616] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./539/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11617] open(".", O_RDONLY [pid 11616] <... futex resumed>) = 1 [pid 11613] <... futex resumed>) = 0 [pid 11616] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] newfstatat(AT_FDCWD, "./556/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11617] <... open resumed>) = 3 [pid 11613] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11617] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11613] <... futex resumed>) = 0 [pid 5051] unlink("./556/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./544/cgroup.net", [pid 5046] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11617] <... futex resumed>) = 1 [pid 11616] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11613] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11617] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11616] <... fcntl resumed>) = 0 [pid 11614] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./541/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11616] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11614] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./544/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./539/cgroup", [pid 11617] <... futex resumed>) = 0 [pid 11616] <... futex resumed>) = 1 [pid 11614] <... futex resumed>) = 1 [pid 11613] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11617] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11616] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11614] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./539/cgroup" [pid 11617] <... fcntl resumed>) = 0 [pid 11616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11613] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11617] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11616] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11613] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 11617] <... futex resumed>) = 1 [pid 11614] <... futex resumed>) = 0 [pid 5051] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 5047] newfstatat(AT_FDCWD, "./541/binderfs", [pid 5046] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11617] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11614] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11614] <... futex resumed>) = 0 [pid 5047] unlink("./541/binderfs") = 0 [pid 5046] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", [pid 11617] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5051] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11617] <... openat resumed>) = 4 [pid 11616] <... openat resumed>) = 4 [pid 11614] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11613] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] close(3 [pid 11617] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 11614] <... futex resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 5049] rmdir("./544" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11617] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./541/cgroup", [pid 11616] +++ killed by SIGIO +++ [pid 11613] +++ killed by SIGIO +++ [pid 5051] unlink("./556/cgroup.net" [pid 5049] <... rmdir resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1117, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] mkdir("./545", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5047] unlink("./541/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 5051] getdents64(3, [pid 5049] <... mkdir resumed>) = 0 [pid 5047] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./539/cgroup.net" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 5046] <... unlink resumed>) = 0 [pid 5051] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11614] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 5047] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 5046] getdents64(3, [pid 5051] rmdir("./556" [pid 5050] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11618 attached [pid 5051] <... rmdir resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1058, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] close(3 [pid 11618] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1092 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 11618] <... set_robust_list resumed>) = 0 [pid 5051] mkdir("./557", 0777 [pid 5050] newfstatat(3, "", [pid 5047] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 11618] chdir("./545" [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] rmdir("./539" [pid 11618] <... chdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] getdents64(3, [pid 5047] unlink("./541/cgroup.net" [pid 5046] <... rmdir resumed>) = 0 [pid 11618] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] mkdir("./540", 0777 [pid 11618] <... prctl resumed>) = 0 [pid 5045] umount2("./528", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11618] setpgid(0, 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11618] <... setpgid resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11618] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11619 attached ./strace-static-x86_64: Process 11620 attached [pid 11619] set_robust_list(0x555556ac56a0, 24 [pid 11620] set_robust_list(0x555556ac56a0, 24 [pid 11619] <... set_robust_list resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1082 [pid 11619] chdir("./557" [pid 11620] <... set_robust_list resumed>) = 0 [pid 11620] chdir("./540" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11619] <... chdir resumed>) = 0 [pid 11620] <... chdir resumed>) = 0 [pid 11619] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] getdents64(3, [pid 5045] openat(AT_FDCWD, "./528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11620] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11619] <... prctl resumed>) = 0 [pid 11620] <... prctl resumed>) = 0 [pid 11619] setpgid(0, 0 [pid 11618] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 5045] <... openat resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11620] setpgid(0, 0 [pid 11619] <... setpgid resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11618] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5047] close(3 [pid 5045] newfstatat(3, "", [pid 11620] <... setpgid resumed>) = 0 [pid 11619] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1116 [pid 5050] unlink("./557/cgroup.cpu" [pid 11620] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] rmdir("./541" [pid 11620] <... symlink resumed>) = 0 [pid 11619] <... symlink resumed>) = 0 [pid 11618] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] getdents64(3, [pid 5050] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./542", 0777 [pid 11619] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11620] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11619] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./528/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11618] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11620] <... symlink resumed>) = 0 [pid 11619] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./557/binderfs", [pid 5047] <... mkdir resumed>) = 0 [pid 11620] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11619] <... symlink resumed>) = 0 [pid 11618] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11620] <... symlink resumed>) = 0 [pid 11619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11619] <... openat resumed>) = 3 [pid 5050] unlink("./557/binderfs" [pid 5045] newfstatat(AT_FDCWD, "./528/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./528/cgroup.cpu" [pid 11620] <... openat resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 11620] write(3, "1000", 4 [pid 11619] write(3, "1000", 4 [pid 11618] <... openat resumed>) = 3 [pid 11620] <... write resumed>) = 4 [pid 11618] write(3, "1000", 4 [pid 11620] close(3 [pid 11619] <... write resumed>) = 4 [pid 11618] <... write resumed>) = 4 [pid 11620] <... close resumed>) = 0 [pid 11619] close(3 [pid 11618] close(3 [pid 5050] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./528/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11620] symlink("/dev/binderfs", "./binderfs" [pid 11619] <... close resumed>) = 0 [pid 11618] <... close resumed>) = 0 ./strace-static-x86_64: Process 11621 attached [pid 11620] <... symlink resumed>) = 0 [pid 11619] symlink("/dev/binderfs", "./binderfs" [pid 11618] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11621] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1086 [pid 11621] <... set_robust_list resumed>) = 0 [pid 11619] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./557/cgroup", [pid 11621] chdir("./542" [pid 11618] <... symlink resumed>) = 0 [pid 11620] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./528/binderfs", [pid 11621] <... chdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11621] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11620] <... futex resumed>) = 0 [pid 11619] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11618] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11620] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11619] <... futex resumed>) = 0 [pid 11618] <... futex resumed>) = 0 [pid 5050] unlink("./557/cgroup" [pid 5045] unlink("./528/binderfs" [pid 11621] <... prctl resumed>) = 0 [pid 11620] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11619] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11618] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11621] setpgid(0, 0 [pid 11620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11621] <... setpgid resumed>) = 0 [pid 11618] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11621] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11620] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11619] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11619] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 11621] <... symlink resumed>) = 0 [pid 11620] <... mmap resumed>) = 0x7f504ff5f000 [pid 11618] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11621] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11620] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11619] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./528/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11621] <... symlink resumed>) = 0 [pid 11620] <... mprotect resumed>) = 0 [pid 11619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11618] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11619] <... mmap resumed>) = 0x7f504ff5f000 [pid 11621] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 11619] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11618] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./528/cgroup", [pid 11620] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11619] <... mprotect resumed>) = 0 [pid 11618] <... mprotect resumed>) = 0 [pid 11621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11621] <... openat resumed>) = 3 [pid 11620] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11618] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./557/blkio.bfq.io_wait_time_recursive" [pid 11619] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11621] write(3, "1000", 4) = 4 [pid 11621] close(3) = 0 [pid 11621] symlink("/dev/binderfs", "./binderfs" [pid 5045] unlink("./528/cgroup" [pid 11621] <... symlink resumed>) = 0 [pid 11620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11619] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11618] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11622 attached [pid 11621] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11619] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11623 attached [pid 11622] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11621] <... futex resumed>) = 0 [pid 11620] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 5045] umount2("./528/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11623] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11622] <... rseq resumed>) = 0 [pid 11621] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11623] <... rseq resumed>) = 0 [pid 11622] set_robust_list(0x7f504ff7f9a0, 24 [pid 11621] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11624 attached [pid 11623] set_robust_list(0x7f504ff7f9a0, 24 [pid 11622] <... set_robust_list resumed>) = 0 [pid 11621] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11620] rt_sigprocmask(SIG_SETMASK, [], [pid 11618] <... clone3 resumed> => {parent_tid=[1093]}, 88) = 1093 [pid 5050] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 11624] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11623] <... set_robust_list resumed>) = 0 [pid 11621] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11620] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11622] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11619] <... clone3 resumed> => {parent_tid=[1117]}, 88) = 1117 [pid 5045] newfstatat(AT_FDCWD, "./528/blkio.bfq.io_wait_time_recursive", [pid 11618] rt_sigprocmask(SIG_SETMASK, [], [pid 11624] <... rseq resumed>) = 0 [pid 11623] rt_sigprocmask(SIG_SETMASK, [], [pid 11622] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11620] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11619] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./557/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11624] set_robust_list(0x7f504ff7f9a0, 24 [pid 11623] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11622] open(".", O_RDONLY [pid 11621] <... mmap resumed>) = 0x7f504ff5f000 [pid 11620] <... futex resumed>) = 0 [pid 11619] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11618] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11624] <... set_robust_list resumed>) = 0 [pid 11623] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11622] <... open resumed>) = 3 [pid 11620] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5045] unlink("./528/blkio.bfq.io_wait_time_recursive" [pid 11624] rt_sigprocmask(SIG_SETMASK, [], [pid 11623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11622] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11621] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11619] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11618] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11624] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11623] open(".", O_RDONLY [pid 11622] <... futex resumed>) = 0 [pid 11621] <... mprotect resumed>) = 0 [pid 11619] <... futex resumed>) = 0 [pid 11620] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11624] open(".", O_RDONLY [pid 11618] <... futex resumed>) = 0 [pid 11623] <... open resumed>) = 3 [pid 11622] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11619] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11624] <... open resumed>) = 3 [pid 11623] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11622] <... fcntl resumed>) = 0 [pid 11621] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11620] <... futex resumed>) = 0 [pid 11618] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./528/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11624] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11623] <... futex resumed>) = 0 [pid 11622] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11621] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11620] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11624] <... futex resumed>) = 1 [pid 11623] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11622] <... futex resumed>) = 0 [pid 11621] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11619] <... futex resumed>) = 0 [pid 11618] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... close resumed>) = 0 [pid 11624] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11619] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11625 attached [pid 11624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11622] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11620] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11619] <... futex resumed>) = 0 [pid 11618] <... futex resumed>) = 0 [pid 5050] rmdir("./557" [pid 5045] newfstatat(AT_FDCWD, "./528/cgroup.net", [pid 11625] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11624] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11623] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11622] <... openat resumed>) = 4 [pid 11620] <... futex resumed>) = 0 [pid 11618] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11625] <... rseq resumed>) = 0 [pid 11624] <... fcntl resumed>) = 0 [pid 11623] <... fcntl resumed>) = 0 [pid 11620] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11619] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11624] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11623] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11625] set_robust_list(0x7f504ff7f9a0, 24 [pid 5045] unlink("./528/cgroup.net" [pid 11625] <... set_robust_list resumed>) = 0 [pid 11624] <... futex resumed>) = 0 [pid 11623] <... futex resumed>) = 1 [pid 11621] <... clone3 resumed> => {parent_tid=[1087]}, 88) = 1087 [pid 11619] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11618] <... futex resumed>) = 0 [pid 5050] mkdir("./558", 0777 [pid 11625] rt_sigprocmask(SIG_SETMASK, [], [pid 11624] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11623] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11621] rt_sigprocmask(SIG_SETMASK, [], [pid 11619] <... futex resumed>) = 0 [pid 11618] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11625] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11618] <... futex resumed>) = 0 [pid 11625] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11618] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, [pid 11624] <... openat resumed>) = 4 [pid 11623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11623] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11621] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 11623] <... openat resumed>) = 4 [pid 11621] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] rmdir("./528") = 0 [pid 5045] mkdir("./529", 0777 [pid 11624] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11619] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... mkdir resumed>) = 0 [pid 11624] <... futex resumed>) = ? [pid 11621] <... futex resumed>) = 1 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... mkdir resumed>) = 0 [pid 11621] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11625] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11625] open(".", O_RDONLY) = 3 [pid 11625] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11627 attached [pid 11627] set_robust_list(0x555556ac56a0, 24 [pid 11625] <... futex resumed>) = 1 [pid 11627] <... set_robust_list resumed>) = 0 [pid 11625] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11627] chdir("./558" [pid 11623] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11621] <... futex resumed>) = 0 [pid 11627] <... chdir resumed>) = 0 [pid 11621] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11618] <... futex resumed>) = ? ./strace-static-x86_64: Process 11626 attached [pid 11627] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11625] <... futex resumed>) = 0 [pid 11624] +++ killed by SIGIO +++ [pid 11623] +++ killed by SIGIO +++ [pid 11622] +++ killed by SIGIO +++ [pid 11621] <... futex resumed>) = 1 [pid 11620] +++ killed by SIGIO +++ [pid 11619] +++ killed by SIGIO +++ [pid 11618] +++ killed by SIGIO +++ [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1119 [pid 11627] <... prctl resumed>) = 0 [pid 11626] set_robust_list(0x555556ac56a0, 24 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1082, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11621] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11627] setpgid(0, 0 [pid 11626] <... set_robust_list resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1060 [pid 11627] <... setpgid resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1116, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1092, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11627] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11625] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5051] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... restart_syscall resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11627] <... symlink resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11625] <... fcntl resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11626] chdir("./529" [pid 11625] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 11627] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11626] <... chdir resumed>) = 0 [pid 11625] <... futex resumed>) = 1 [pid 11621] <... futex resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11627] <... symlink resumed>) = 0 [pid 11626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11625] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11621] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] getdents64(3, [pid 11627] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11626] <... prctl resumed>) = 0 [pid 11625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11621] <... futex resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] getdents64(3, [pid 11627] <... symlink resumed>) = 0 [pid 5046] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11626] setpgid(0, 0 [pid 11625] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11621] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11627] <... openat resumed>) = 3 [pid 11625] <... openat resumed>) = 4 [pid 5049] newfstatat(3, "", [pid 5046] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11626] <... setpgid resumed>) = 0 [pid 5051] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5046] unlink("./540/cgroup.cpu" [pid 11627] write(3, "1000", 4 [pid 11626] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 11627] <... write resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 11627] close(3 [pid 5046] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11627] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11627] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5046] newfstatat(AT_FDCWD, "./540/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./540/binderfs" [pid 5049] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11627] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11621] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11625] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] unlink("./557/cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11627] <... futex resumed>) = 0 [pid 11626] <... symlink resumed>) = 0 [pid 11625] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5046] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11627] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11626] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11627] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11626] <... symlink resumed>) = 0 [pid 5051] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./545/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./540/cgroup", [pid 11627] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11627] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11626] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] newfstatat(AT_FDCWD, "./557/binderfs", [pid 5049] unlink("./545/cgroup.cpu" [pid 11627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11626] <... symlink resumed>) = 0 [pid 5046] unlink("./540/cgroup" [pid 11627] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... unlink resumed>) = 0 [pid 11627] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11627] <... mprotect resumed>) = 0 [pid 11626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./557/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11627] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11626] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./545/binderfs", [pid 11627] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11626] write(3, "1000", 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11627] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11626] <... write resumed>) = 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11626] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./545/binderfs" [pid 5046] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11628 attached [pid 11627] <... clone3 resumed> => {parent_tid=[1120]}, 88) = 1120 [pid 11626] <... close resumed>) = 0 [pid 11621] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11628] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11627] rt_sigprocmask(SIG_SETMASK, [], [pid 11626] symlink("/dev/binderfs", "./binderfs" [pid 5046] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 11628] <... rseq resumed>) = 0 [pid 11627] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11626] <... symlink resumed>) = 0 [pid 5051] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1086, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11628] set_robust_list(0x7f504ff7f9a0, 24 [pid 11627] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11628] <... set_robust_list resumed>) = 0 [pid 11627] <... futex resumed>) = 0 [pid 11626] <... futex resumed>) = 0 [pid 11628] rt_sigprocmask(SIG_SETMASK, [], [pid 11627] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11626] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(AT_FDCWD, "./557/cgroup", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11628] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11626] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11628] open(".", O_RDONLY [pid 11626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] unlink("./557/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./545/cgroup", [pid 11628] <... open resumed>) = 3 [pid 11626] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 11628] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11628] <... futex resumed>) = 1 [pid 11627] <... futex resumed>) = 0 [pid 11626] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./545/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11628] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11627] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] unlink("./540/cgroup.net" [pid 11628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11627] <... futex resumed>) = 0 [pid 11626] <... mprotect resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 11628] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11628] <... fcntl resumed>) = 0 [pid 11627] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11626] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11628] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11626] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] getdents64(3, [pid 11628] <... futex resumed>) = 0 [pid 11627] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11628] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11627] <... futex resumed>) = 0 [pid 5047] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11629 attached [pid 11628] <... openat resumed>) = 4 [pid 11627] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11626] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5046] close(3 [pid 11629] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11626] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11629] <... rseq resumed>) = 0 [pid 11628] +++ killed by SIGIO +++ [pid 11626] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", [pid 5049] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", [pid 5047] getdents64(3, [pid 5046] rmdir("./540" [pid 11629] set_robust_list(0x7f504ff7f9a0, 24 [pid 11627] +++ killed by SIGIO +++ [pid 11626] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] unlink("./557/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11629] <... set_robust_list resumed>) = 0 [pid 11626] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 11629] rt_sigprocmask(SIG_SETMASK, [], [pid 11626] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1119, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 11629] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 11629] open(".", O_RDONLY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./541", 0777 [pid 11629] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11629] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11629] <... futex resumed>) = 1 [pid 11626] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 11629] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11626] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11629] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11626] <... futex resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 11629] <... fcntl resumed>) = 0 [pid 11629] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11629] <... futex resumed>) = 0 [pid 11626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11629] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11626] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11629] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11626] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11629] <... openat resumed>) = 4 [pid 5046] <... mkdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./545/cgroup.net", [pid 5047] unlink("./542/cgroup.cpu" [pid 5051] unlink("./557/cgroup.net" [pid 11629] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11626] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11629] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11629] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./545/cgroup.net" [pid 5047] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11626] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5050] unlink("./558/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./542/binderfs", [pid 5051] rmdir("./557" [pid 5050] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./558/binderfs", [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] unlink("./542/binderfs" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1060, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 5051] mkdir("./558", 0777 [pid 5050] unlink("./558/binderfs" [pid 5049] <... close resumed>) = 0 ./strace-static-x86_64: Process 11630 attached [pid 5050] <... unlink resumed>) = 0 [pid 5049] rmdir("./545" [pid 5045] <... restart_syscall resumed>) = 0 [pid 5050] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./558/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./558/cgroup" [pid 11630] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1084 [pid 11630] <... set_robust_list resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./546", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./542/cgroup", [pid 5045] umount2("./529", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11630] chdir("./541" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./558/blkio.bfq.io_wait_time_recursive") = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11630] <... chdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11631 attached [pid 11630] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1118 [pid 5050] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./542/cgroup" [pid 5045] openat(AT_FDCWD, "./529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11632 attached [pid 11631] set_robust_list(0x555556ac56a0, 24 [pid 11630] <... prctl resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11632] set_robust_list(0x555556ac56a0, 24 [pid 11630] setpgid(0, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... openat resumed>) = 3 [pid 11631] <... set_robust_list resumed>) = 0 [pid 11630] <... setpgid resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./558/cgroup.net", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1094 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(3, "", [pid 11632] <... set_robust_list resumed>) = 0 [pid 11631] chdir("./558" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", [pid 11632] chdir("./546" [pid 11631] <... chdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11632] <... chdir resumed>) = 0 [pid 11632] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11631] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11630] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11632] <... prctl resumed>) = 0 [pid 11631] <... prctl resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 11632] setpgid(0, 0 [pid 11631] setpgid(0, 0 [pid 5050] unlink("./558/cgroup.net" [pid 5047] unlink("./542/blkio.bfq.io_wait_time_recursive" [pid 11632] <... setpgid resumed>) = 0 [pid 11631] <... setpgid resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11632] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11631] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11630] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./529/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11630] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11632] <... symlink resumed>) = 0 [pid 11631] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5047] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11632] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11631] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./529/cgroup.cpu", [pid 11632] <... symlink resumed>) = 0 [pid 11631] <... symlink resumed>) = 0 [pid 11630] <... symlink resumed>) = 0 [pid 5050] close(3 [pid 5047] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 11632] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11631] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11632] <... symlink resumed>) = 0 [pid 11630] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11631] <... symlink resumed>) = 0 [pid 11632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11630] <... symlink resumed>) = 0 [pid 5050] rmdir("./558" [pid 5047] unlink("./542/cgroup.net" [pid 5045] unlink("./529/cgroup.cpu" [pid 11632] <... openat resumed>) = 3 [pid 11631] <... openat resumed>) = 3 [pid 11632] write(3, "1000", 4 [pid 5050] <... rmdir resumed>) = 0 [pid 11632] <... write resumed>) = 4 [pid 11632] close(3) = 0 [pid 11631] write(3, "1000", 4 [pid 11632] symlink("/dev/binderfs", "./binderfs" [pid 11631] <... write resumed>) = 4 [pid 11631] close(3 [pid 11632] <... symlink resumed>) = 0 [pid 11631] <... close resumed>) = 0 [pid 11631] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... unlink resumed>) = 0 [pid 11632] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11632] <... futex resumed>) = 0 [pid 11632] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11631] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11630] <... openat resumed>) = 3 [pid 5047] getdents64(3, [pid 5045] umount2("./529/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11632] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11631] <... futex resumed>) = 0 [pid 11632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11631] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11631] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11632] <... mmap resumed>) = 0x7f504ff5f000 [pid 11631] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11632] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11631] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11632] <... mprotect resumed>) = 0 [pid 11631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11632] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11631] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11632] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11631] <... mprotect resumed>) = 0 [pid 11630] write(3, "1000", 4 [pid 5050] mkdir("./559", 0777 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11631] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11630] <... write resumed>) = 4 [pid 5047] close(3 [pid 5045] newfstatat(AT_FDCWD, "./529/binderfs", ./strace-static-x86_64: Process 11633 attached [pid 11631] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11630] close(3 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11633] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11632] <... clone3 resumed> => {parent_tid=[1095]}, 88) = 1095 [pid 11631] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11630] <... close resumed>) = 0 [pid 5047] rmdir("./542" [pid 5045] unlink("./529/binderfs"./strace-static-x86_64: Process 11634 attached [pid 11633] <... rseq resumed>) = 0 [pid 11632] rt_sigprocmask(SIG_SETMASK, [], [pid 11630] symlink("/dev/binderfs", "./binderfs" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11634] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11633] set_robust_list(0x7f504ff7f9a0, 24 [pid 11632] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11631] <... clone3 resumed> => {parent_tid=[1119]}, 88) = 1119 [pid 11630] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11635 attached [pid 11634] <... rseq resumed>) = 0 [pid 11633] <... set_robust_list resumed>) = 0 [pid 11632] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11631] rt_sigprocmask(SIG_SETMASK, [], [pid 11630] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./529/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11630] <... futex resumed>) = 0 [pid 11635] set_robust_list(0x555556ac56a0, 24 [pid 11633] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11635] <... set_robust_list resumed>) = 0 [pid 11630] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] newfstatat(AT_FDCWD, "./529/cgroup", [pid 11632] <... futex resumed>) = 0 [pid 11632] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11630] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] unlink("./529/cgroup" [pid 11634] set_robust_list(0x7f504ff7f9a0, 24 [pid 11633] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11631] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11634] <... set_robust_list resumed>) = 0 [pid 11631] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] <... unlink resumed>) = 0 [pid 11630] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11634] rt_sigprocmask(SIG_SETMASK, [], [pid 11633] open(".", O_RDONLY [pid 11631] <... futex resumed>) = 0 [pid 11635] chdir("./559" [pid 11633] <... open resumed>) = 3 [pid 11630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] mkdir("./543", 0777 [pid 5045] umount2("./529/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11634] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11633] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11631] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11634] open(".", O_RDONLY [pid 11633] <... futex resumed>) = 1 [pid 11632] <... futex resumed>) = 0 [pid 11634] <... open resumed>) = 3 [pid 11633] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11632] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... mkdir resumed>) = 0 [pid 11634] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11633] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11632] <... futex resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1121 [pid 11634] <... futex resumed>) = 1 [pid 11633] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11632] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11631] <... futex resumed>) = 0 [pid 11634] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11633] <... fcntl resumed>) = 0 [pid 11631] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11633] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11631] <... futex resumed>) = 0 [pid 11634] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11633] <... futex resumed>) = 1 [pid 11632] <... futex resumed>) = 0 [pid 11634] <... fcntl resumed>) = 0 [pid 11633] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11632] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11631] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11634] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11633] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11632] <... futex resumed>) = 0 [pid 11634] <... futex resumed>) = 0 [pid 11633] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11632] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11635] <... chdir resumed>) = 0 [pid 11634] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11633] <... openat resumed>) = 4 [pid 11630] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] newfstatat(AT_FDCWD, "./529/blkio.bfq.io_wait_time_recursive", [pid 11630] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11631] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11634] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11631] <... futex resumed>) = 0 [pid 11633] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11632] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11633] +++ killed by SIGIO +++ [pid 11635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11635] setpgid(0, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11635] <... setpgid resumed>) = 0 [pid 11630] <... mprotect resumed>) = 0 [pid 5045] unlink("./529/blkio.bfq.io_wait_time_recursive" [pid 11635] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./529/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11636 attached ) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./529/cgroup.net", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1088 [pid 11636] set_robust_list(0x555556ac56a0, 24 [pid 11635] <... symlink resumed>) = 0 [pid 11634] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11631] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11630] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11636] <... set_robust_list resumed>) = 0 [pid 11635] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11636] chdir("./543" [pid 11630] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11632] +++ killed by SIGIO +++ [pid 5045] unlink("./529/cgroup.net" [pid 11636] <... chdir resumed>) = 0 [pid 11635] <... symlink resumed>) = 0 [pid 11630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1094, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11635] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 11636] <... prctl resumed>) = 0 [pid 11636] setpgid(0, 0) = 0 [pid 11636] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5049] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11630] <... clone3 resumed> => {parent_tid=[1085]}, 88) = 1085 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11637 attached [pid 11635] <... symlink resumed>) = 0 [pid 11634] +++ killed by SIGIO +++ [pid 11631] +++ killed by SIGIO +++ [pid 11630] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11637] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11636] <... symlink resumed>) = 0 [pid 11635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11637] <... rseq resumed>) = 0 [pid 11636] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11630] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1118, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] <... openat resumed>) = 3 [pid 5045] close(3 [pid 11637] set_robust_list(0x7f504ff7f9a0, 24 [pid 11636] <... symlink resumed>) = 0 [pid 11635] <... openat resumed>) = 3 [pid 11630] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5049] newfstatat(3, "", [pid 11637] <... set_robust_list resumed>) = 0 [pid 11636] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11635] write(3, "1000", 4 [pid 11630] <... futex resumed>) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... close resumed>) = 0 [pid 11637] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] getdents64(3, [pid 5045] rmdir("./529" [pid 11637] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11636] <... symlink resumed>) = 0 [pid 11635] <... write resumed>) = 4 [pid 11630] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11637] open(".", O_RDONLY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11637] <... open resumed>) = 3 [pid 11636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11635] close(3 [pid 5045] <... rmdir resumed>) = 0 [pid 11637] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11635] <... close resumed>) = 0 [pid 11637] <... futex resumed>) = 1 [pid 11635] symlink("/dev/binderfs", "./binderfs" [pid 11637] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11635] <... symlink resumed>) = 0 [pid 11635] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11635] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11635] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11635] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11635] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11635] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11635] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11636] <... openat resumed>) = 3 [pid 5049] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./530", 0777 [pid 11636] write(3, "1000", 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11630] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11638 attached [pid 11630] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./546/cgroup.cpu", [pid 5045] <... mkdir resumed>) = 0 [pid 11638] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11637] <... futex resumed>) = 0 [pid 11636] <... write resumed>) = 4 [pid 11635] <... clone3 resumed> => {parent_tid=[1122]}, 88) = 1122 [pid 11630] <... futex resumed>) = 1 [pid 11638] <... rseq resumed>) = 0 [pid 11637] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11636] close(3 [pid 11635] rt_sigprocmask(SIG_SETMASK, [], [pid 11638] set_robust_list(0x7f504ff7f9a0, 24 [pid 11637] <... fcntl resumed>) = 0 [pid 11635] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11638] <... set_robust_list resumed>) = 0 [pid 11637] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11636] <... close resumed>) = 0 [pid 11635] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11630] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 5049] unlink("./546/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11638] rt_sigprocmask(SIG_SETMASK, [], [pid 11637] <... futex resumed>) = 0 [pid 11636] symlink("/dev/binderfs", "./binderfs" [pid 11635] <... futex resumed>) = 0 [pid 11630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11638] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11637] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11638] open(".", O_RDONLY [pid 11635] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11638] <... open resumed>) = 3 [pid 11636] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 11638] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11636] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11638] <... futex resumed>) = 1 [pid 11636] <... futex resumed>) = 0 [pid 11635] <... futex resumed>) = 0 [pid 11638] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11636] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11635] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11636] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11635] <... futex resumed>) = 0 [pid 11638] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11635] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11638] <... fcntl resumed>) = 0 [pid 11636] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11630] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11638] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11630] <... futex resumed>) = 1 [pid 5051] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 11638] <... futex resumed>) = 1 [pid 11637] <... futex resumed>) = 0 [pid 11635] <... futex resumed>) = 0 [pid 11638] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11637] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11636] <... mmap resumed>) = 0x7f504ff5f000 [pid 11635] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11630] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11637] <... openat resumed>) = 4 [pid 11636] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11635] <... futex resumed>) = 0 [pid 11630] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./558/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 11638] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11636] <... mprotect resumed>) = 0 [pid 11635] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11630] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11639 attached [pid 5051] newfstatat(AT_FDCWD, "./558/binderfs", [pid 5049] newfstatat(AT_FDCWD, "./546/binderfs", [pid 11639] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11639] <... set_robust_list resumed>) = 0 [pid 11638] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11635] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./558/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11636] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1062 [pid 11639] chdir("./530") = 0 [pid 11636] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./546/binderfs" [pid 11639] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... unlink resumed>) = 0 [pid 11639] <... prctl resumed>) = 0 [pid 11636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11640 attached [pid 11639] setpgid(0, 0 [pid 11636] <... clone3 resumed> => {parent_tid=[1089]}, 88) = 1089 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11640] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11639] <... setpgid resumed>) = 0 [pid 11636] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./546/cgroup", [pid 11638] +++ killed by SIGIO +++ [pid 11635] +++ killed by SIGIO +++ [pid 11640] <... rseq resumed>) = 0 [pid 11639] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11637] +++ killed by SIGIO +++ [pid 11630] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./558/cgroup", [pid 11636] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11640] set_robust_list(0x7f504ff7f9a0, 24 [pid 11639] <... symlink resumed>) = 0 [pid 11636] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1121, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] unlink("./546/cgroup" [pid 11640] <... set_robust_list resumed>) = 0 [pid 11636] <... futex resumed>) = 0 [pid 11640] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1084, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11640] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11639] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11640] open(".", O_RDONLY [pid 11636] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./558/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11640] <... open resumed>) = 3 [pid 11639] <... symlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11640] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11639] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... openat resumed>) = 3 [pid 11640] <... futex resumed>) = 1 [pid 11639] <... symlink resumed>) = 0 [pid 11636] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11640] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11636] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 5051] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(3, "", [pid 11640] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11636] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11640] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11639] <... openat resumed>) = 3 [pid 11636] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11640] <... fcntl resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... openat resumed>) = 3 [pid 11640] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 11640] <... futex resumed>) = 1 [pid 11639] write(3, "1000", 4 [pid 11636] <... futex resumed>) = 0 [pid 5051] unlink("./558/blkio.bfq.io_wait_time_recursive" [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 5046] getdents64(3, [pid 11640] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11639] <... write resumed>) = 4 [pid 11636] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 11640] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11636] <... futex resumed>) = 0 [pid 11640] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11639] close(3 [pid 11636] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11640] <... openat resumed>) = 4 [pid 11639] <... close resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11640] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11636] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./558/cgroup.net", [pid 5049] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 11639] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./558/cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 5046] unlink("./541/cgroup.cpu" [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11639] <... symlink resumed>) = 0 [pid 5049] unlink("./546/cgroup.net" [pid 5051] getdents64(3, [pid 11639] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 5046] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11640] +++ killed by SIGIO +++ [pid 11639] <... futex resumed>) = 0 [pid 11636] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11639] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] unlink("./559/cgroup.cpu" [pid 11639] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11639] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1088, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11639] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] close(3 [pid 5049] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./541/binderfs", [pid 11639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... close resumed>) = 0 [pid 5050] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11639] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] rmdir("./558" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11639] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./559/binderfs", [pid 5049] close(3 [pid 5046] unlink("./541/binderfs" [pid 11639] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5049] rmdir("./546" [pid 11639] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./559/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11639] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] mkdir("./559", 0777 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 11639] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./547", 0777 [pid 5047] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./559/cgroup", ./strace-static-x86_64: Process 11641 attached {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11641] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5050] unlink("./559/cgroup" [pid 11641] <... rseq resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11641] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... mkdir resumed>) = 0 [pid 11641] <... set_robust_list resumed>) = 0 [pid 11641] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./541/cgroup", [pid 11639] <... clone3 resumed> => {parent_tid=[1063]}, 88) = 1063 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(3, "", [pid 11639] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11641] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11641] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5046] unlink("./541/cgroup" [pid 5050] unlink("./559/blkio.bfq.io_wait_time_recursive" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11639] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11639] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11642 attached ) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11639] <... futex resumed>) = 1 [pid 5047] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 11639] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./543/cgroup.cpu" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1120 [pid 5046] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 11642] set_robust_list(0x555556ac56a0, 24 [pid 11641] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11641] open(".", O_RDONLY [pid 5046] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 11642] <... set_robust_list resumed>) = 0 [pid 11641] <... open resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11643 attached [pid 5050] unlink("./559/cgroup.net" [pid 11642] chdir("./559" [pid 11641] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11643] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1096 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11643] <... set_robust_list resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./543/binderfs", [pid 5046] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11643] chdir("./547" [pid 11642] <... chdir resumed>) = 0 [pid 11641] <... futex resumed>) = 1 [pid 11639] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 11642] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11641] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11639] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11642] <... prctl resumed>) = 0 [pid 11641] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11639] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 11643] <... chdir resumed>) = 0 [pid 11642] setpgid(0, 0 [pid 11641] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11643] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11639] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] close(3 [pid 5047] unlink("./543/binderfs" [pid 11643] <... prctl resumed>) = 0 [pid 11642] <... setpgid resumed>) = 0 [pid 11641] <... fcntl resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11643] setpgid(0, 0 [pid 11642] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 11643] <... setpgid resumed>) = 0 [pid 5047] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./541/cgroup.net" [pid 11642] <... symlink resumed>) = 0 [pid 11641] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./559" [pid 11641] <... futex resumed>) = 1 [pid 11639] <... futex resumed>) = 0 [pid 11643] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11642] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11641] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11639] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11643] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./543/cgroup", [pid 11643] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11642] <... symlink resumed>) = 0 [pid 11641] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11639] <... futex resumed>) = 0 [pid 5050] mkdir("./560", 0777 [pid 11642] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11641] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11639] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./543/cgroup" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11643] <... symlink resumed>) = 0 [pid 11643] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11641] <... openat resumed>) = 4 [pid 5047] <... unlink resumed>) = 0 [pid 5046] close(3 [pid 5050] <... mkdir resumed>) = 0 [pid 11643] <... symlink resumed>) = 0 [pid 11642] <... symlink resumed>) = 0 [pid 11641] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11639] <... futex resumed>) = 0 [pid 11642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 ./strace-static-x86_64: Process 11644 attached [pid 11642] <... openat resumed>) = 3 [pid 11641] +++ killed by SIGIO +++ [pid 11639] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11644] set_robust_list(0x555556ac56a0, 24 [pid 11642] write(3, "1000", 4 [pid 11644] <... set_robust_list resumed>) = 0 [pid 11643] <... openat resumed>) = 3 [pid 11642] <... write resumed>) = 4 [pid 11644] chdir("./560" [pid 11642] close(3 [pid 11644] <... chdir resumed>) = 0 [pid 11642] <... close resumed>) = 0 [pid 11644] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11642] symlink("/dev/binderfs", "./binderfs" [pid 11644] <... prctl resumed>) = 0 [pid 11642] <... symlink resumed>) = 0 [pid 11644] setpgid(0, 0 [pid 11642] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11644] <... setpgid resumed>) = 0 [pid 11642] <... futex resumed>) = 0 [pid 11644] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11642] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11642] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11642] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11643] write(3, "1000", 4 [pid 11642] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", [pid 5046] rmdir("./541" [pid 11644] <... symlink resumed>) = 0 [pid 11643] <... write resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1123 [pid 11643] close(3 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1062, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11643] <... close resumed>) = 0 [pid 11643] symlink("/dev/binderfs", "./binderfs" [pid 11642] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11644] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11642] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11645 attached [pid 11644] <... symlink resumed>) = 0 [pid 11643] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11645] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11643] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./543/blkio.bfq.io_wait_time_recursive" [pid 11645] <... rseq resumed>) = 0 [pid 11643] <... futex resumed>) = 0 [pid 11645] set_robust_list(0x7f504ff7f9a0, 24 [pid 11644] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11643] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11642] <... clone3 resumed> => {parent_tid=[1121]}, 88) = 1121 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11645] <... set_robust_list resumed>) = 0 [pid 11643] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11645] rt_sigprocmask(SIG_SETMASK, [], [pid 11644] <... symlink resumed>) = 0 [pid 11642] rt_sigprocmask(SIG_SETMASK, [], [pid 11645] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11643] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11642] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] mkdir("./542", 0777 [pid 5045] umount2("./530", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11645] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11643] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11642] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11642] <... futex resumed>) = 0 [pid 11644] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11645] open(".", O_RDONLY [pid 11642] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11645] <... open resumed>) = 3 [pid 11644] write(3, "1000", 4 [pid 11643] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] newfstatat(AT_FDCWD, "./543/cgroup.net", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] openat(AT_FDCWD, "./530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11645] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11643] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11644] <... write resumed>) = 4 [pid 11643] <... mprotect resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11644] close(3./strace-static-x86_64: Process 11646 attached [pid 11645] <... futex resumed>) = 1 [pid 11644] <... close resumed>) = 0 [pid 11643] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11642] <... futex resumed>) = 0 [pid 5047] unlink("./543/cgroup.net" [pid 5045] newfstatat(3, "", [pid 11646] set_robust_list(0x555556ac56a0, 24 [pid 11645] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11644] symlink("/dev/binderfs", "./binderfs" [pid 11642] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11646] <... set_robust_list resumed>) = 0 [pid 11645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11644] <... symlink resumed>) = 0 [pid 11643] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11642] <... futex resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1086 [pid 5047] <... unlink resumed>) = 0 [pid 11646] chdir("./542" [pid 5047] getdents64(3, [pid 11643] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11646] <... chdir resumed>) = 0 [pid 11645] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11644] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11642] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, ./strace-static-x86_64: Process 11647 attached [pid 11646] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11645] <... fcntl resumed>) = 0 [pid 11644] <... futex resumed>) = 0 [pid 11643] <... clone3 resumed> => {parent_tid=[1097]}, 88) = 1097 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11647] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11646] <... prctl resumed>) = 0 [pid 11645] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11644] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11643] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] close(3 [pid 11647] <... rseq resumed>) = 0 [pid 11646] setpgid(0, 0 [pid 11645] <... futex resumed>) = 1 [pid 11647] set_robust_list(0x7f504ff7f9a0, 24 [pid 11646] <... setpgid resumed>) = 0 [pid 11645] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11643] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11642] <... futex resumed>) = 0 [pid 11647] <... set_robust_list resumed>) = 0 [pid 11646] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11643] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11642] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./530/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11647] rt_sigprocmask(SIG_SETMASK, [], [pid 11646] <... symlink resumed>) = 0 [pid 11645] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11644] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11643] <... futex resumed>) = 0 [pid 11642] <... futex resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 11647] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11646] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] rmdir("./543" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11647] open(".", O_RDONLY [pid 11646] <... symlink resumed>) = 0 [pid 11645] <... openat resumed>) = 4 [pid 11644] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11643] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11642] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11647] <... open resumed>) = 3 [pid 11646] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11647] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11646] <... symlink resumed>) = 0 [pid 11645] +++ killed by SIGIO +++ [pid 11644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./530/cgroup.cpu", [pid 11644] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11644] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] mkdir("./544", 0777 [pid 5045] unlink("./530/cgroup.cpu" [pid 11647] <... futex resumed>) = 1 [pid 11646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11644] <... mprotect resumed>) = 0 [pid 11643] <... futex resumed>) = 0 [pid 11642] +++ killed by SIGIO +++ [pid 5045] <... unlink resumed>) = 0 [pid 11647] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11646] <... openat resumed>) = 3 [pid 11644] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11643] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... mkdir resumed>) = 0 [pid 11647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11646] write(3, "1000", 4 [pid 11644] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./530/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11647] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11646] <... write resumed>) = 4 [pid 11644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11643] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1120, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11648 attached [pid 11647] <... fcntl resumed>) = 0 [pid 11646] close(3 [pid 11643] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11647] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11646] <... close resumed>) = 0 [pid 11643] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11647] <... futex resumed>) = 0 [pid 11646] symlink("/dev/binderfs", "./binderfs" [pid 11643] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11647] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11646] <... symlink resumed>) = 0 [pid 11643] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./530/binderfs", ./strace-static-x86_64: Process 11649 attached [pid 11648] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11646] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11644] <... clone3 resumed> => {parent_tid=[1124]}, 88) = 1124 [pid 5051] newfstatat(3, "", [pid 11649] set_robust_list(0x555556ac56a0, 24 [pid 11647] <... openat resumed>) = 4 [pid 11646] <... futex resumed>) = 0 [pid 11643] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11649] <... set_robust_list resumed>) = 0 [pid 11646] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11646] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] getdents64(3, [pid 11646] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11648] <... rseq resumed>) = 0 [pid 11644] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11647] +++ killed by SIGIO +++ [pid 11648] set_robust_list(0x7f504ff7f9a0, 24 [pid 11644] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] unlink("./530/binderfs" [pid 11648] <... set_robust_list resumed>) = 0 [pid 11646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11644] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 11649] chdir("./544" [pid 11648] rt_sigprocmask(SIG_SETMASK, [], [pid 11644] <... futex resumed>) = 0 [pid 5045] umount2("./530/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11648] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11644] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11648] open(".", O_RDONLY [pid 5045] newfstatat(AT_FDCWD, "./530/cgroup", [pid 11648] <... open resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./530/cgroup") = 0 [pid 11648] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./530/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11648] <... futex resumed>) = 1 [pid 11644] <... futex resumed>) = 0 [pid 11649] <... chdir resumed>) = 0 [pid 11648] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11646] <... mmap resumed>) = 0x7f504ff5f000 [pid 11644] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11649] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11644] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./530/blkio.bfq.io_wait_time_recursive", [pid 11649] <... prctl resumed>) = 0 [pid 11648] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11646] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11644] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11643] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1090 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11649] setpgid(0, 0 [pid 11648] <... fcntl resumed>) = 0 [pid 11646] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11648] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./530/blkio.bfq.io_wait_time_recursive" [pid 11649] <... setpgid resumed>) = 0 [pid 11648] <... futex resumed>) = 1 [pid 11646] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11644] <... futex resumed>) = 0 [pid 5051] unlink("./559/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 11649] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11648] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11646] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11644] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... unlink resumed>) = 0 [pid 11646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1096, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11649] <... symlink resumed>) = 0 [pid 5051] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11650 attached [pid 11648] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11649] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11644] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./530/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11650] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11649] <... symlink resumed>) = 0 [pid 11648] <... openat resumed>) = 4 [pid 11646] <... clone3 resumed> => {parent_tid=[1087]}, 88) = 1087 [pid 11644] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./559/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./530/cgroup.net", [pid 11650] <... rseq resumed>) = 0 [pid 11649] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11648] +++ killed by SIGIO +++ [pid 11646] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./559/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./530/cgroup.net" [pid 11650] set_robust_list(0x7f504ff7f9a0, 24 [pid 11646] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11650] <... set_robust_list resumed>) = 0 [pid 11649] <... symlink resumed>) = 0 [pid 11646] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 11650] rt_sigprocmask(SIG_SETMASK, [], [pid 11649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11646] <... futex resumed>) = 0 [pid 5051] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... openat resumed>) = 3 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11650] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11646] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11644] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./559/cgroup", [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1123, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] newfstatat(3, "", [pid 5045] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... close resumed>) = 0 [pid 11649] <... openat resumed>) = 3 [pid 5045] rmdir("./530" [pid 11650] open(".", O_RDONLY [pid 11649] write(3, "1000", 4 [pid 5051] unlink("./559/cgroup" [pid 5050] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 11650] <... open resumed>) = 3 [pid 11649] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... rmdir resumed>) = 0 [pid 11650] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11649] close(3 [pid 5051] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11650] <... futex resumed>) = 1 [pid 11649] <... close resumed>) = 0 [pid 11646] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11650] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11649] symlink("/dev/binderfs", "./binderfs" [pid 11646] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", [pid 5050] newfstatat(3, "", [pid 5049] newfstatat(AT_FDCWD, "./547/cgroup.cpu", [pid 5045] mkdir("./531", 0777 [pid 11650] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11646] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11650] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11649] <... symlink resumed>) = 0 [pid 11646] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5049] unlink("./547/cgroup.cpu" [pid 5045] <... mkdir resumed>) = 0 [pid 11650] <... fcntl resumed>) = 0 [pid 11649] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./559/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11650] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11649] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11650] <... futex resumed>) = 1 [pid 11649] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11646] <... futex resumed>) = 0 [pid 5051] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11650] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11649] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11646] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./560/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./547/binderfs", [pid 11650] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11649] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11646] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11650] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11649] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11646] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./560/cgroup.cpu") = 0 [pid 5050] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11651 attached ) = -1 EINVAL (Invalid argument) [pid 11650] <... openat resumed>) = 4 [pid 11649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] unlink("./547/binderfs" [pid 11650] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11651] set_robust_list(0x555556ac56a0, 24 [pid 11649] <... mmap resumed>) = 0x7f504ff5f000 [pid 11646] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./559/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./560/binderfs", [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1064 [pid 11649] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11646] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11651] <... set_robust_list resumed>) = 0 [pid 5050] unlink("./560/binderfs" [pid 11651] chdir("./531" [pid 11649] <... mprotect resumed>) = 0 [pid 11651] <... chdir resumed>) = 0 [pid 11649] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11650] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 11651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11649] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./547/cgroup", [pid 5051] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11651] <... prctl resumed>) = 0 [pid 5050] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11651] setpgid(0, 0 [pid 11649] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./547/cgroup"./strace-static-x86_64: Process 11652 attached [pid 11651] <... setpgid resumed>) = 0 [pid 11646] <... restart_syscall resumed>) = ? [pid 5051] rmdir("./559" [pid 5050] newfstatat(AT_FDCWD, "./560/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 11652] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11651] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11649] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11651] <... symlink resumed>) = 0 [pid 5050] unlink("./560/cgroup" [pid 11651] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 11652] <... rseq resumed>) = 0 [pid 11649] rt_sigprocmask(SIG_SETMASK, [], [pid 11646] +++ killed by SIGIO +++ [pid 5051] mkdir("./560", 0777 [pid 5049] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11652] set_robust_list(0x7f504ff7f9a0, 24 [pid 11649] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11651] <... symlink resumed>) = 0 [pid 5050] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... mkdir resumed>) = 0 [pid 11652] <... set_robust_list resumed>) = 0 [pid 11651] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11649] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11652] rt_sigprocmask(SIG_SETMASK, [], [pid 11651] <... symlink resumed>) = 0 [pid 11649] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1086, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11652] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11649] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 5046] <... restart_syscall resumed>) = 0 [pid 11652] open(".", O_RDONLY [pid 11651] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11651] write(3, "1000", 4 [pid 5050] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11652] <... open resumed>) = 3 [pid 11651] <... write resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 11651] close(3 [pid 5050] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11651] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11651] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./560/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11652] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11651] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11652] <... futex resumed>) = 1 [pid 11649] <... futex resumed>) = 0 [pid 5049] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 11652] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11649] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(3, "", [pid 11652] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11649] <... futex resumed>) = 0 [pid 11652] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11649] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11652] <... fcntl resumed>) = 0 [pid 11651] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11651] <... futex resumed>) = 0 [pid 5050] unlink("./560/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11653 attached [pid 11652] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11651] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 11653] set_robust_list(0x555556ac56a0, 24 [pid 11652] <... futex resumed>) = 1 [pid 11651] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11649] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 11653] <... set_robust_list resumed>) = 0 [pid 11652] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11651] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11649] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 5046] getdents64(3, [pid 11653] chdir("./560" [pid 11652] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11651] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11649] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1122 [pid 5050] close(3 [pid 11652] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11649] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11651] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... close resumed>) = 0 [pid 11653] <... chdir resumed>) = 0 [pid 11651] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11652] <... openat resumed>) = 4 [pid 11651] <... mprotect resumed>) = 0 [pid 5050] rmdir("./560" [pid 11653] <... prctl resumed>) = 0 [pid 11652] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11649] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11653] setpgid(0, 0 [pid 5049] unlink("./547/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11653] <... setpgid resumed>) = 0 [pid 11651] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 11652] +++ killed by SIGIO +++ [pid 11653] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11651] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] mkdir("./561", 0777 [pid 11651] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./542/cgroup.cpu" [pid 5049] close(3 [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./547"./strace-static-x86_64: Process 11654 attached [pid 11651] <... clone3 resumed> => {parent_tid=[1065]}, 88) = 1065 [pid 11654] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11653] <... symlink resumed>) = 0 [pid 11651] rt_sigprocmask(SIG_SETMASK, [], [pid 11649] +++ killed by SIGIO +++ [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11654] <... rseq resumed>) = 0 [pid 11653] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1090, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./542/binderfs", [pid 11653] <... symlink resumed>) = 0 [pid 11654] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./548", 0777 [pid 5047] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5046] unlink("./542/binderfs") = 0 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, [pid 5046] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] newfstatat(AT_FDCWD, "./542/cgroup", [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11653] symlink("/syzcgroup/net/syz5", "./cgroup.net"./strace-static-x86_64: Process 11655 attached [pid 5047] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./542/cgroup" [pid 11655] set_robust_list(0x555556ac56a0, 24 [pid 11654] <... set_robust_list resumed>) = 0 [pid 11653] <... symlink resumed>) = 0 [pid 11651] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1125 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11655] <... set_robust_list resumed>) = 0 [pid 11654] rt_sigprocmask(SIG_SETMASK, [], [pid 11653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11651] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./544/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11655] chdir("./561" [pid 5047] unlink("./544/cgroup.cpu") = 0 [pid 11655] <... chdir resumed>) = 0 [pid 11655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11655] setpgid(0, 0./strace-static-x86_64: Process 11656 attached ) = 0 [pid 11656] set_robust_list(0x555556ac56a0, 24 [pid 11655] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11654] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11653] <... openat resumed>) = 3 [pid 11651] <... futex resumed>) = 0 [pid 5047] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11656] <... set_robust_list resumed>) = 0 [pid 11654] open(".", O_RDONLY [pid 11653] write(3, "1000", 4 [pid 11651] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11656] chdir("./548" [pid 11653] <... write resumed>) = 4 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1098 [pid 11653] close(3 [pid 11656] <... chdir resumed>) = 0 [pid 11654] <... open resumed>) = 3 [pid 11653] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./544/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", [pid 11656] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11654] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11653] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11656] <... prctl resumed>) = 0 [pid 11655] <... symlink resumed>) = 0 [pid 11654] <... futex resumed>) = 1 [pid 11653] <... symlink resumed>) = 0 [pid 11651] <... futex resumed>) = 0 [pid 5047] unlink("./544/binderfs" [pid 5046] unlink("./542/blkio.bfq.io_wait_time_recursive" [pid 11656] setpgid(0, 0 [pid 11655] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11654] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11653] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11651] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11655] <... symlink resumed>) = 0 [pid 11654] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11653] <... futex resumed>) = 0 [pid 11656] <... setpgid resumed>) = 0 [pid 11651] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11655] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11654] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11653] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11651] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11656] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11655] <... symlink resumed>) = 0 [pid 11654] <... fcntl resumed>) = 0 [pid 11653] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./544/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./544/cgroup" [pid 11654] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11653] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11656] <... symlink resumed>) = 0 [pid 11654] <... futex resumed>) = 1 [pid 11653] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11651] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 11656] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11654] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11653] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11651] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11656] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 11653] <... mmap resumed>) = 0x7f504ff5f000 [pid 11654] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11651] <... futex resumed>) = 0 [pid 11654] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11653] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11651] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11656] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11653] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./544/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./544/cgroup.net", [pid 11656] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./544/cgroup.net" [pid 11654] <... openat resumed>) = 4 [pid 11653] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11655] <... openat resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./542/cgroup.net" [pid 5047] close(3) = 0 [pid 11653] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11655] write(3, "1000", 4 [pid 11653] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11654] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] rmdir("./544") = 0 ./strace-static-x86_64: Process 11657 attached [pid 11651] <... futex resumed>) = ? [pid 11657] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11656] <... openat resumed>) = 3 [pid 11655] <... write resumed>) = 4 [pid 5046] getdents64(3, [pid 11657] <... rseq resumed>) = 0 [pid 11655] close(3 [pid 11657] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] mkdir("./545", 0777 [pid 11657] <... set_robust_list resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11657] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11653] <... clone3 resumed> => {parent_tid=[1123]}, 88) = 1123 [pid 11656] write(3, "1000", 4 [pid 11655] <... close resumed>) = 0 [pid 11653] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] close(3 [pid 11655] symlink("/dev/binderfs", "./binderfs" [pid 11653] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... close resumed>) = 0 [pid 11656] <... write resumed>) = 4 [pid 11655] <... symlink resumed>) = 0 [pid 11654] +++ killed by SIGIO +++ [pid 11653] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11651] +++ killed by SIGIO +++ [pid 5046] rmdir("./542" [pid 11656] close(3 [pid 11653] <... futex resumed>) = 1 [pid 11657] <... futex resumed>) = 0 [pid 11657] open(".", O_RDONLY) = 3 [pid 11656] <... close resumed>) = 0 [pid 11653] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11656] symlink("/dev/binderfs", "./binderfs" [pid 11657] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11653] <... futex resumed>) = 0 [pid 11653] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11657] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11656] <... symlink resumed>) = 0 [pid 11653] <... futex resumed>) = 0 [pid 11657] <... fcntl resumed>) = 0 [pid 11655] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11658 attached [pid 11657] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11656] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11655] <... futex resumed>) = 0 [pid 11653] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... rmdir resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1064, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1092 [pid 11658] set_robust_list(0x555556ac56a0, 24 [pid 11657] <... futex resumed>) = 0 [pid 11656] <... futex resumed>) = 0 [pid 11655] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11653] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11658] <... set_robust_list resumed>) = 0 [pid 11657] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11653] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11658] chdir("./545" [pid 11657] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11656] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11655] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] mkdir("./543", 0777 [pid 5045] umount2("./531", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11656] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11655] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11658] <... chdir resumed>) = 0 [pid 11657] <... openat resumed>) = 4 [pid 11656] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11655] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11653] <... futex resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11658] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11658] <... prctl resumed>) = 0 [pid 11658] setpgid(0, 0 [pid 5045] <... openat resumed>) = 3 [pid 11658] <... setpgid resumed>) = 0 [pid 11655] <... mmap resumed>) = 0x7f504ff5f000 [pid 11656] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 11657] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11656] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11655] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11653] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11658] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11656] <... mprotect resumed>) = 0 [pid 11653] <... futex resumed>) = ? [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11658] <... symlink resumed>) = 0 [pid 11657] +++ killed by SIGIO +++ [pid 11656] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11655] <... mprotect resumed>) = 0 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 11659 attached [pid 11659] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11658] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11659] chdir("./543" [pid 11658] <... symlink resumed>) = 0 [pid 11656] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11655] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 11660 attached [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11660] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11659] <... chdir resumed>) = 0 [pid 11656] <... clone3 resumed> => {parent_tid=[1099]}, 88) = 1099 [pid 11655] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./531/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11658] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11655] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1088 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11661 attached [pid 11660] <... rseq resumed>) = 0 [pid 11659] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11658] <... symlink resumed>) = 0 [pid 11656] rt_sigprocmask(SIG_SETMASK, [], [pid 11653] +++ killed by SIGIO +++ [pid 5045] newfstatat(AT_FDCWD, "./531/cgroup.cpu", [pid 11661] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11655] <... clone3 resumed> => {parent_tid=[1126]}, 88) = 1126 [pid 11659] <... prctl resumed>) = 0 [pid 11655] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1122, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11661] <... rseq resumed>) = 0 [pid 11660] set_robust_list(0x7f504ff7f9a0, 24 [pid 11659] setpgid(0, 0 [pid 11656] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5045] unlink("./531/cgroup.cpu" [pid 11661] set_robust_list(0x7f504ff7f9a0, 24 [pid 11660] <... set_robust_list resumed>) = 0 [pid 11659] <... setpgid resumed>) = 0 [pid 11656] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11655] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 11661] <... set_robust_list resumed>) = 0 [pid 11660] rt_sigprocmask(SIG_SETMASK, [], [pid 11659] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11658] <... openat resumed>) = 3 [pid 11656] <... futex resumed>) = 0 [pid 11655] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11661] rt_sigprocmask(SIG_SETMASK, [], [pid 11660] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11661] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11660] open(".", O_RDONLY [pid 11658] write(3, "1000", 4 [pid 11656] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11655] <... futex resumed>) = 0 [pid 11659] <... symlink resumed>) = 0 [pid 5045] umount2("./531/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11661] open(".", O_RDONLY [pid 5051] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11659] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11658] <... write resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./531/binderfs", [pid 11658] close(3 [pid 5051] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11661] <... open resumed>) = 3 [pid 11660] <... open resumed>) = 3 [pid 5051] <... openat resumed>) = 3 [pid 11661] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11659] <... symlink resumed>) = 0 [pid 5045] unlink("./531/binderfs" [pid 11658] <... close resumed>) = 0 [pid 11655] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11659] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11655] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11658] symlink("/dev/binderfs", "./binderfs" [pid 11655] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11661] <... futex resumed>) = 0 [pid 11660] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11661] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11660] <... futex resumed>) = 1 [pid 11656] <... futex resumed>) = 0 [pid 11661] <... fcntl resumed>) = 0 [pid 11660] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11656] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11661] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11656] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11661] <... futex resumed>) = 0 [pid 11660] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11656] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11661] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11660] <... fcntl resumed>) = 0 [pid 11659] <... symlink resumed>) = 0 [pid 11658] <... symlink resumed>) = 0 [pid 11655] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11660] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] getdents64(3, [pid 5045] umount2("./531/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11660] <... futex resumed>) = 1 [pid 11656] <... futex resumed>) = 0 [pid 11655] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11661] <... futex resumed>) = 0 [pid 11660] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11656] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11655] <... futex resumed>) = 1 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11661] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11658] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11656] <... futex resumed>) = 0 [pid 11655] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./531/cgroup", [pid 11661] <... openat resumed>) = 4 [pid 11660] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11659] <... openat resumed>) = 3 [pid 11658] <... futex resumed>) = 0 [pid 11656] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11655] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11661] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11660] <... openat resumed>) = 4 [pid 11659] write(3, "1000", 4 [pid 11658] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] unlink("./531/cgroup" [pid 5051] newfstatat(AT_FDCWD, "./560/cgroup.cpu", [pid 11660] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11656] <... futex resumed>) = -1 (errno 18446744073709551354) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11659] <... write resumed>) = 4 [pid 11661] +++ killed by SIGIO +++ [pid 11658] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] unlink("./560/cgroup.cpu" [pid 11659] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 11659] <... close resumed>) = 0 [pid 11658] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] umount2("./531/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11659] symlink("/dev/binderfs", "./binderfs" [pid 11658] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11659] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(AT_FDCWD, "./560/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./531/blkio.bfq.io_wait_time_recursive", [pid 11658] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11659] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11658] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11655] +++ killed by SIGIO +++ [pid 5051] unlink("./560/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11659] <... futex resumed>) = 0 [pid 11658] <... mprotect resumed>) = 0 [pid 11659] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11658] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./531/blkio.bfq.io_wait_time_recursive" [pid 11660] +++ killed by SIGIO +++ [pid 11656] +++ killed by SIGIO +++ [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1125, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1098, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11659] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11658] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11659] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11658] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./531/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11659] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./560/cgroup", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11662 attached [pid 11659] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11658] <... clone3 resumed> => {parent_tid=[1093]}, 88) = 1093 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11662] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11659] <... mmap resumed>) = 0x7f504ff5f000 [pid 11658] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./560/cgroup" [pid 5050] <... openat resumed>) = 3 [pid 11659] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11658] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11662] <... rseq resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5049] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./531/cgroup.net", [pid 11662] set_robust_list(0x7f504ff7f9a0, 24 [pid 11659] <... mprotect resumed>) = 0 [pid 11658] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11662] <... set_robust_list resumed>) = 0 [pid 11662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11662] open(".", O_RDONLY [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11662] <... open resumed>) = 3 [pid 11662] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11659] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11662] <... futex resumed>) = 0 [pid 11658] <... futex resumed>) = 0 [pid 5051] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 11659] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./531/cgroup.net" [pid 11662] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11658] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 5049] <... openat resumed>) = 3 [pid 11659] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(3, "", [pid 5051] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 11658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11658] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11658] <... futex resumed>) = 1 [pid 11662] <... futex resumed>) = 0 [pid 11658] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11662] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT./strace-static-x86_64: Process 11663 attached ) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11663] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11662] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11659] <... clone3 resumed> => {parent_tid=[1089]}, 88) = 1089 [pid 5050] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 11663] <... rseq resumed>) = 0 [pid 11662] <... futex resumed>) = 1 [pid 11659] rt_sigprocmask(SIG_SETMASK, [], [pid 11658] <... futex resumed>) = 0 [pid 11663] set_robust_list(0x7f504ff7f9a0, 24 [pid 11662] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11659] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11658] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11663] <... set_robust_list resumed>) = 0 [pid 11662] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11659] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11658] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./560/cgroup.net", [pid 5045] rmdir("./531" [pid 11663] rt_sigprocmask(SIG_SETMASK, [], [pid 11662] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11659] <... futex resumed>) = 0 [pid 11658] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./561/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./548/cgroup.cpu", [pid 11663] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11662] <... openat resumed>) = 4 [pid 11659] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11663] open(".", O_RDONLY [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11658] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11663] <... open resumed>) = 3 [pid 11658] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11662] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./560/cgroup.net" [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./548/cgroup.cpu" [pid 5045] <... rmdir resumed>) = 0 [pid 11663] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11662] <... futex resumed>) = ? [pid 11663] <... futex resumed>) = 1 [pid 11662] +++ killed by SIGIO +++ [pid 11659] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5045] mkdir("./532", 0777 [pid 11663] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11659] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11663] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11659] <... futex resumed>) = 0 [pid 11663] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11658] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./561/binderfs", [pid 11663] <... fcntl resumed>) = 0 [pid 11659] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11663] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./561/binderfs" [pid 5045] <... mkdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1092, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] close(3 [pid 11663] <... futex resumed>) = 0 [pid 11659] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11663] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11659] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] rmdir("./560" [pid 5050] newfstatat(AT_FDCWD, "./561/cgroup", [pid 11659] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./545/cgroup.cpu", [pid 11663] <... openat resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./545/cgroup.cpu"./strace-static-x86_64: Process 11664 attached [pid 11663] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11659] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./561/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./548/binderfs", [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./545/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./545/binderfs") = 0 [pid 5047] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./545/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./545/cgroup") = 0 [pid 5047] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./548/binderfs" [pid 5050] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11664] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1066 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11663] +++ killed by SIGIO +++ [pid 11659] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./545/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./545/cgroup.net") = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./545" [pid 11664] <... set_robust_list resumed>) = 0 [pid 5051] mkdir("./561", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 [pid 11664] chdir("./532" [pid 5051] <... mkdir resumed>) = 0 [pid 5050] unlink("./561/blkio.bfq.io_wait_time_recursive" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11664] <... chdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] mkdir("./546", 0777 [pid 11664] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] newfstatat(AT_FDCWD, "./548/cgroup", [pid 11664] <... prctl resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1088, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11664] setpgid(0, 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11665 attached [pid 11664] <... setpgid resumed>) = 0 [pid 5050] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./548/cgroup" [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11665] set_robust_list(0x555556ac56a0, 24 [pid 11664] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1124 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11665] <... set_robust_list resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11665] chdir("./561" [pid 11664] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 5049] <... unlink resumed>) = 0 [pid 11665] <... chdir resumed>) = 0 [pid 11664] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 11665] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11664] <... symlink resumed>) = 0 [pid 5050] unlink("./561/cgroup.net" [pid 5046] newfstatat(3, "", [pid 11664] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11665] <... prctl resumed>) = 0 [pid 11664] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11665] setpgid(0, 0) = 0 [pid 11665] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 11665] <... symlink resumed>) = 0 [pid 11664] <... openat resumed>) = 3 [pid 5050] getdents64(3, [pid 5049] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11666 attached [pid 11665] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11666] set_robust_list(0x555556ac56a0, 24 [pid 11665] <... symlink resumed>) = 0 [pid 11664] write(3, "1000", 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1094 [pid 5046] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11666] <... set_robust_list resumed>) = 0 [pid 11665] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] close(3 [pid 11664] <... write resumed>) = 4 [pid 5046] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 5050] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11664] close(3 [pid 5050] rmdir("./561" [pid 5049] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11666] chdir("./546" [pid 11665] <... symlink resumed>) = 0 [pid 11664] <... close resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./543/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 11666] <... chdir resumed>) = 0 [pid 11665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11664] symlink("/dev/binderfs", "./binderfs" [pid 5050] mkdir("./562", 0777 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11665] <... openat resumed>) = 3 [pid 11664] <... symlink resumed>) = 0 [pid 5046] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11666] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11664] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] unlink("./548/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11665] write(3, "1000", 4 [pid 11666] <... prctl resumed>) = 0 [pid 11664] <... futex resumed>) = 0 [pid 11664] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11666] setpgid(0, 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11666] <... setpgid resumed>) = 0 [pid 11665] <... write resumed>) = 4 [pid 11664] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./543/binderfs", [pid 11666] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11664] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 11667 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1127 [pid 11667] set_robust_list(0x555556ac56a0, 24 [pid 11665] close(3 [pid 11664] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11666] <... symlink resumed>) = 0 [pid 11667] <... set_robust_list resumed>) = 0 [pid 11666] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11665] <... close resumed>) = 0 [pid 11664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./543/binderfs" [pid 11667] chdir("./562" [pid 11666] <... symlink resumed>) = 0 [pid 11665] symlink("/dev/binderfs", "./binderfs" [pid 11664] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] close(3 [pid 11667] <... chdir resumed>) = 0 [pid 11666] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11665] <... symlink resumed>) = 0 [pid 11664] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11667] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11666] <... symlink resumed>) = 0 [pid 11665] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11664] <... mprotect resumed>) = 0 [pid 11667] <... prctl resumed>) = 0 [pid 5049] rmdir("./548" [pid 11666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11665] <... futex resumed>) = 0 [pid 11664] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... rmdir resumed>) = 0 [pid 5046] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11667] setpgid(0, 0 [pid 11666] <... openat resumed>) = 3 [pid 11665] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11664] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11667] <... setpgid resumed>) = 0 [pid 11665] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11664] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] newfstatat(AT_FDCWD, "./543/cgroup", ./strace-static-x86_64: Process 11668 attached [pid 11667] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11666] write(3, "1000", 4 [pid 11665] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] mkdir("./549", 0777 [pid 11666] <... write resumed>) = 4 [pid 11665] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11664] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11668] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11667] <... symlink resumed>) = 0 [pid 11666] close(3 [pid 11665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11664] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... mkdir resumed>) = 0 [pid 11666] <... close resumed>) = 0 [pid 11665] <... mmap resumed>) = 0x7f504ff5f000 [pid 11668] <... rseq resumed>) = 0 [pid 11667] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11664] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./543/cgroup" [pid 11668] set_robust_list(0x7f504ff7f9a0, 24 [pid 11665] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11664] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11666] symlink("/dev/binderfs", "./binderfs" [pid 11667] <... symlink resumed>) = 0 [pid 11666] <... symlink resumed>) = 0 [pid 11665] <... mprotect resumed>) = 0 [pid 11664] <... futex resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11668] <... set_robust_list resumed>) = 0 [pid 11667] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11666] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11665] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11664] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11668] rt_sigprocmask(SIG_SETMASK, [], [pid 11666] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11669 attached [pid 11668] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11667] <... symlink resumed>) = 0 [pid 11666] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11665] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11669] set_robust_list(0x555556ac56a0, 24 [pid 11668] open(".", O_RDONLY [pid 11667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11666] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1100 [pid 11669] <... set_robust_list resumed>) = 0 [pid 11666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11669] chdir("./549" [pid 11668] <... open resumed>) = 3 [pid 11667] <... openat resumed>) = 3 [pid 11666] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11670 attached [pid 11669] <... chdir resumed>) = 0 [pid 11668] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11667] write(3, "1000", 4 [pid 11666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11665] <... clone3 resumed> => {parent_tid=[1125]}, 88) = 1125 [pid 5046] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", [pid 11670] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11668] <... futex resumed>) = 1 [pid 11664] <... futex resumed>) = 0 [pid 11670] <... rseq resumed>) = 0 [pid 11669] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11668] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11667] <... write resumed>) = 4 [pid 11666] <... mmap resumed>) = 0x7f504ff5f000 [pid 11665] rt_sigprocmask(SIG_SETMASK, [], [pid 11664] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11670] set_robust_list(0x7f504ff7f9a0, 24 [pid 11669] <... prctl resumed>) = 0 [pid 11668] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11667] close(3 [pid 11664] <... futex resumed>) = 0 [pid 11670] <... set_robust_list resumed>) = 0 [pid 11669] setpgid(0, 0 [pid 11668] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11666] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11665] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./543/blkio.bfq.io_wait_time_recursive" [pid 11670] rt_sigprocmask(SIG_SETMASK, [], [pid 11669] <... setpgid resumed>) = 0 [pid 11668] <... fcntl resumed>) = 0 [pid 11667] <... close resumed>) = 0 [pid 11666] <... mprotect resumed>) = 0 [pid 11665] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11664] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11670] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11669] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11668] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11667] symlink("/dev/binderfs", "./binderfs" [pid 11666] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11665] <... futex resumed>) = 0 [pid 11664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... unlink resumed>) = 0 [pid 11670] open(".", O_RDONLY [pid 11668] <... futex resumed>) = 0 [pid 11664] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11670] <... open resumed>) = 3 [pid 11669] <... symlink resumed>) = 0 [pid 11667] <... symlink resumed>) = 0 [pid 11666] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11665] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11670] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11670] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11669] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11665] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11669] <... symlink resumed>) = 0 [pid 11668] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11664] <... futex resumed>) = 0 [pid 5046] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11667] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11664] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11667] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11667] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 ./strace-static-x86_64: Process 11671 attached [pid 11670] <... futex resumed>) = 0 [pid 11667] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11666] <... clone3 resumed> => {parent_tid=[1095]}, 88) = 1095 [pid 11665] <... futex resumed>) = 1 [pid 11671] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11670] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11669] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11667] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11666] rt_sigprocmask(SIG_SETMASK, [], [pid 11665] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11671] <... rseq resumed>) = 0 [pid 11670] <... fcntl resumed>) = 0 [pid 11669] <... symlink resumed>) = 0 [pid 11668] <... openat resumed>) = 4 [pid 11667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11666] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./543/cgroup.net", [pid 11671] set_robust_list(0x7f504ff7f9a0, 24 [pid 11670] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11667] <... mmap resumed>) = 0x7f504ff5f000 [pid 11671] <... set_robust_list resumed>) = 0 [pid 11670] <... futex resumed>) = 1 [pid 11666] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11665] <... futex resumed>) = 0 [pid 11671] rt_sigprocmask(SIG_SETMASK, [], [pid 11670] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11667] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11666] <... futex resumed>) = 0 [pid 11665] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11671] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11670] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11669] <... openat resumed>) = 3 [pid 11668] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11667] <... mprotect resumed>) = 0 [pid 11666] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./543/cgroup.net" [pid 11671] open(".", O_RDONLY [pid 11670] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11665] <... futex resumed>) = 0 [pid 11670] <... openat resumed>) = 4 [pid 11667] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... unlink resumed>) = 0 [pid 11664] <... futex resumed>) = ? [pid 11667] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11671] <... open resumed>) = 3 [pid 11668] +++ killed by SIGIO +++ [pid 11671] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11669] write(3, "1000", 4 [pid 5046] getdents64(3, [pid 11671] <... futex resumed>) = 1 [pid 11669] <... write resumed>) = 4 [pid 11667] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11666] <... futex resumed>) = 0 [pid 11665] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11671] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11669] close(3 [pid 11666] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11671] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11670] +++ killed by SIGIO +++ [pid 11669] <... close resumed>) = 0 [pid 11666] <... futex resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11672 attached [pid 11671] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11669] symlink("/dev/binderfs", "./binderfs" [pid 5046] close(3 [pid 11672] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11667] <... clone3 resumed> => {parent_tid=[1128]}, 88) = 1128 [pid 5046] <... close resumed>) = 0 [pid 11672] <... rseq resumed>) = 0 [pid 11667] rt_sigprocmask(SIG_SETMASK, [], [pid 11664] +++ killed by SIGIO +++ [pid 5046] rmdir("./543" [pid 11672] set_robust_list(0x7f504ff7f9a0, 24 [pid 11667] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11665] +++ killed by SIGIO +++ [pid 11671] <... fcntl resumed>) = 0 [pid 11669] <... symlink resumed>) = 0 [pid 11666] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11672] <... set_robust_list resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1124, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11667] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11671] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11669] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1066, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... rmdir resumed>) = 0 [pid 11672] rt_sigprocmask(SIG_SETMASK, [], [pid 11671] <... futex resumed>) = 0 [pid 11669] <... futex resumed>) = 0 [pid 11667] <... futex resumed>) = 0 [pid 11666] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11672] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11671] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11669] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11667] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11666] <... futex resumed>) = 0 [pid 5046] mkdir("./544", 0777 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11672] open(".", O_RDONLY [pid 11671] <... openat resumed>) = 4 [pid 11669] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11669] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11671] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11669] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11666] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 11672] <... open resumed>) = 3 [pid 11671] <... futex resumed>) = ? [pid 11669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./532", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11672] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11671] +++ killed by SIGIO +++ [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11672] <... futex resumed>) = 1 [pid 5045] openat(AT_FDCWD, "./532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11672] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11667] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11667] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11672] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11669] <... mmap resumed>) = 0x7f504ff5f000 [pid 11667] <... futex resumed>) = 0 [pid 11666] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 5045] <... openat resumed>) = 3 [pid 11672] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT./strace-static-x86_64: Process 11673 attached [pid 11669] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11667] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1094, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5045] newfstatat(3, "", [pid 11673] set_robust_list(0x555556ac56a0, 24 [pid 11672] <... fcntl resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11669] <... mprotect resumed>) = 0 [pid 11673] <... set_robust_list resumed>) = 0 [pid 11672] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1090 [pid 5045] getdents64(3, [pid 11669] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11673] chdir("./544" [pid 11672] <... futex resumed>) = 1 [pid 11669] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11672] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11667] <... futex resumed>) = 0 [pid 11667] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./532/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./532/cgroup.cpu", [pid 11669] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11672] <... futex resumed>) = 0 [pid 11667] <... futex resumed>) = 1 [pid 11672] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11667] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11674 attached [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11674] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] unlink("./532/cgroup.cpu" [pid 11674] <... rseq resumed>) = 0 [pid 11674] set_robust_list(0x7f504ff7f9a0, 24 [pid 11672] <... openat resumed>) = 4 [pid 5045] <... unlink resumed>) = 0 [pid 11674] <... set_robust_list resumed>) = 0 [pid 5051] getdents64(3, [pid 11674] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11674] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11674] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./532/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./532/binderfs", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11673] <... chdir resumed>) = 0 [pid 11672] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11673] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11669] <... clone3 resumed> => {parent_tid=[1101]}, 88) = 1101 [pid 11667] <... futex resumed>) = 1101 [pid 5047] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] <... prctl resumed>) = 0 [pid 11669] rt_sigprocmask(SIG_SETMASK, [], [pid 11673] setpgid(0, 0 [pid 11669] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./561/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./532/binderfs" [pid 11673] <... setpgid resumed>) = 0 [pid 11669] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11674] <... futex resumed>) = 0 [pid 11669] <... futex resumed>) = 1 [pid 5051] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./532/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11674] open(".", O_RDONLY [pid 11673] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11669] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11674] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./561/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./532/cgroup", [pid 11674] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11674] <... futex resumed>) = 1 [pid 11673] <... symlink resumed>) = 0 [pid 11669] <... futex resumed>) = 0 [pid 5051] unlink("./561/binderfs" [pid 5045] unlink("./532/cgroup" [pid 11674] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11673] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11669] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11673] <... symlink resumed>) = 0 [pid 11669] <... futex resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11674] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11673] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11669] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11674] <... fcntl resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./532/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11674] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./561/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11673] <... symlink resumed>) = 0 [pid 11674] <... futex resumed>) = 1 [pid 11673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11674] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11669] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./532/blkio.bfq.io_wait_time_recursive", [pid 11673] <... openat resumed>) = 3 [pid 11669] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./561/cgroup" [pid 5047] newfstatat(AT_FDCWD, "./546/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11674] <... futex resumed>) = 0 [pid 11669] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 11674] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11669] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./532/blkio.bfq.io_wait_time_recursive" [pid 11674] <... openat resumed>) = 4 [pid 5051] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11673] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./561/blkio.bfq.io_wait_time_recursive" [pid 11673] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./532/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] close(3 [pid 11672] +++ killed by SIGIO +++ [pid 11667] +++ killed by SIGIO +++ [pid 5047] unlink("./546/cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11674] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11673] <... close resumed>) = 0 [pid 11669] <... futex resumed>) = 0 [pid 5051] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1127, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11673] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./532/cgroup.net", [pid 11673] <... symlink resumed>) = 0 [pid 5047] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 5050] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11673] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./546/binderfs", [pid 11673] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11674] +++ killed by SIGIO +++ [pid 11673] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11669] +++ killed by SIGIO +++ [pid 5051] unlink("./561/cgroup.net" [pid 5050] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./546/binderfs" [pid 5045] unlink("./532/cgroup.net" [pid 11673] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 11673] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5050] newfstatat(3, "", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1100, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11673] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] getdents64(3, [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./546/cgroup", [pid 5045] getdents64(3, [pid 11673] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11673] <... mprotect resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./546/cgroup" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] rmdir("./561" [pid 5050] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 5049] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11673] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./562/cgroup.cpu", [pid 5049] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11675 attached [pid 5050] unlink("./562/cgroup.cpu" [pid 5049] newfstatat(3, "", [pid 5047] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 11675] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11673] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11673] rt_sigprocmask(SIG_SETMASK, [], [pid 11675] <... rseq resumed>) = 0 [pid 5051] mkdir("./562", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 5045] rmdir("./532" [pid 11675] set_robust_list(0x7f504ff7f9a0, 24 [pid 11673] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11675] <... set_robust_list resumed>) = 0 [pid 11673] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 5045] <... rmdir resumed>) = 0 [pid 11675] rt_sigprocmask(SIG_SETMASK, [], [pid 11673] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11675] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./562/binderfs", [pid 5047] <... unlink resumed>) = 0 [pid 5045] mkdir("./533", 0777 [pid 11675] open(".", O_RDONLY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./549/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11673] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./549/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11676 attached [pid 11675] <... open resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11676] set_robust_list(0x555556ac56a0, 24 [pid 11675] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./562/binderfs" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11676] <... set_robust_list resumed>) = 0 [pid 11675] <... futex resumed>) = 1 [pid 11673] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1126 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 11675] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11676] chdir("./562" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./546/cgroup.net" [pid 5050] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./549/binderfs", [pid 11676] <... chdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./562/cgroup", [pid 11676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11673] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11677 attached [pid 11676] setpgid(0, 0 [pid 11675] <... futex resumed>) = 0 [pid 11673] <... futex resumed>) = 1 [pid 5050] unlink("./562/cgroup" [pid 5049] unlink("./549/binderfs" [pid 11677] set_robust_list(0x555556ac56a0, 24 [pid 11676] <... setpgid resumed>) = 0 [pid 11675] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11673] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1068 [pid 11677] <... set_robust_list resumed>) = 0 [pid 11676] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11675] <... fcntl resumed>) = 0 [pid 5050] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11677] chdir("./533" [pid 11676] <... symlink resumed>) = 0 [pid 11675] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11676] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11675] <... futex resumed>) = 1 [pid 11673] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11677] <... chdir resumed>) = 0 [pid 11675] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11673] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] close(3 [pid 11677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11673] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./549/cgroup", [pid 5047] <... close resumed>) = 0 [pid 11676] <... symlink resumed>) = 0 [pid 11677] <... prctl resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 11676] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11675] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11673] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] rmdir("./546" [pid 11677] setpgid(0, 0 [pid 11675] <... openat resumed>) = 4 [pid 11676] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./549/cgroup" [pid 11676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11675] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11677] <... setpgid resumed>) = 0 [pid 11673] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11677] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11677] <... symlink resumed>) = 0 [pid 11676] <... openat resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 5049] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./547", 0777 [pid 11677] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 11676] write(3, "1000", 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 11677] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 5049] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 11676] <... write resumed>) = 4 [pid 11676] close(3) = 0 [pid 11676] symlink("/dev/binderfs", "./binderfs" [pid 11677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11676] <... symlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11677] <... openat resumed>) = 3 [pid 5050] unlink("./562/cgroup.net" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11675] +++ killed by SIGIO +++ [pid 11673] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 11677] write(3, "1000", 4 [pid 11676] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11677] <... write resumed>) = 4 [pid 11676] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11677] close(3 [pid 11676] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11677] <... close resumed>) = 0 [pid 11676] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11677] symlink("/dev/binderfs", "./binderfs" [pid 11676] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11677] <... symlink resumed>) = 0 [pid 11676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11677] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11676] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] getdents64(3, [pid 5049] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11678 attached [pid 11677] <... futex resumed>) = 0 [pid 11676] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11678] set_robust_list(0x555556ac56a0, 24 [pid 11677] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11676] <... mprotect resumed>) = 0 [pid 5050] close(3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1096 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1090, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11678] <... set_robust_list resumed>) = 0 [pid 11677] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11676] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11678] chdir("./547" [pid 11677] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] newfstatat(AT_FDCWD, "./549/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11678] <... chdir resumed>) = 0 [pid 11677] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11676] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11678] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11677] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11676] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11679 attached [pid 11678] <... prctl resumed>) = 0 [pid 11677] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] rmdir("./562" [pid 5049] unlink("./549/cgroup.net" [pid 5046] <... openat resumed>) = 3 [pid 11679] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11678] setpgid(0, 0 [pid 5046] newfstatat(3, "", [pid 11679] <... rseq resumed>) = 0 [pid 11678] <... setpgid resumed>) = 0 [pid 11677] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11676] <... clone3 resumed> => {parent_tid=[1127]}, 88) = 1127 [pid 11678] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11677] <... mprotect resumed>) = 0 [pid 11676] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11679] set_robust_list(0x7f504ff7f9a0, 24 [pid 11677] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11676] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11679] <... set_robust_list resumed>) = 0 [pid 5046] getdents64(3, [pid 11679] rt_sigprocmask(SIG_SETMASK, [], [pid 11678] <... symlink resumed>) = 0 [pid 11677] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11676] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] mkdir("./563", 0777 [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11679] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11678] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11677] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11676] <... futex resumed>) = 0 [pid 11679] open(".", O_RDONLY [pid 11678] <... symlink resumed>) = 0 [pid 11676] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11680 attached [pid 11680] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11677] <... clone3 resumed> => {parent_tid=[1069]}, 88) = 1069 [pid 5050] <... mkdir resumed>) = 0 [pid 11680] <... rseq resumed>) = 0 [pid 11678] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11677] rt_sigprocmask(SIG_SETMASK, [], [pid 11680] set_robust_list(0x7f504ff7f9a0, 24 [pid 11678] <... symlink resumed>) = 0 [pid 11677] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11680] <... set_robust_list resumed>) = 0 [pid 11677] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11680] rt_sigprocmask(SIG_SETMASK, [], [pid 11678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11677] <... futex resumed>) = 0 [pid 11680] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11680] open(".", O_RDONLY [pid 11679] <... open resumed>) = 3 [pid 11677] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./544/cgroup.cpu", [pid 11680] <... open resumed>) = 3 [pid 11679] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11678] <... openat resumed>) = 3 [pid 5049] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11680] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11679] <... futex resumed>) = 1 [pid 11678] write(3, "1000", 4 [pid 11676] <... futex resumed>) = 0 [pid 5046] unlink("./544/cgroup.cpu" [pid 11680] <... futex resumed>) = 1 [pid 11679] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11678] <... write resumed>) = 4 [pid 11677] <... futex resumed>) = 0 [pid 11676] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... close resumed>) = 0 [pid 11680] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11679] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11678] close(3 [pid 11677] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11676] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11680] <... fcntl resumed>) = 0 [pid 11678] <... close resumed>) = 0 [pid 11677] <... futex resumed>) = 0 [pid 11676] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./549" [pid 5046] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11680] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11678] symlink("/dev/binderfs", "./binderfs" [pid 11677] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11680] <... futex resumed>) = 0 [pid 11678] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11680] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11677] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11678] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11677] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11679] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11677] <... futex resumed>) = 1 [pid 5046] newfstatat(AT_FDCWD, "./544/binderfs", ./strace-static-x86_64: Process 11681 attached [pid 11680] <... futex resumed>) = 0 [pid 11679] <... fcntl resumed>) = 0 [pid 11678] <... futex resumed>) = 0 [pid 11677] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11681] set_robust_list(0x555556ac56a0, 24 [pid 11680] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11678] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11679] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1129 [pid 5049] mkdir("./550", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11681] <... set_robust_list resumed>) = 0 [pid 11680] <... openat resumed>) = 4 [pid 11679] <... futex resumed>) = 1 [pid 11678] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11676] <... futex resumed>) = 0 [pid 11681] chdir("./563" [pid 11680] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11679] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11678] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11676] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11681] <... chdir resumed>) = 0 [pid 11679] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11678] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11677] <... futex resumed>) = ? [pid 11676] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] unlink("./544/binderfs" [pid 11681] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11680] +++ killed by SIGIO +++ [pid 11679] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11676] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11681] <... prctl resumed>) = 0 [pid 11679] <... openat resumed>) = 4 [pid 11678] <... mmap resumed>) = 0x7f504ff5f000 [pid 11681] setpgid(0, 0 [pid 11678] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11677] +++ killed by SIGIO +++ [pid 11681] <... setpgid resumed>) = 0 [pid 11676] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11681] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11678] <... mprotect resumed>) = 0 [pid 11676] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1068, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11679] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./544/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./544/cgroup" [pid 11679] <... futex resumed>) = ? [pid 5046] <... unlink resumed>) = 0 [pid 11679] +++ killed by SIGIO +++ [pid 11678] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11682 attached [pid 5046] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 11682] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11682] <... set_robust_list resumed>) = 0 [pid 5046] unlink("./544/blkio.bfq.io_wait_time_recursive") = 0 [pid 11682] chdir("./550" [pid 11681] <... symlink resumed>) = 0 [pid 11678] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11682] <... chdir resumed>) = 0 [pid 5046] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11682] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11682] <... prctl resumed>) = 0 [pid 11682] setpgid(0, 0 [pid 11681] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11678] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1102 [pid 5046] newfstatat(AT_FDCWD, "./544/cgroup.net", ./strace-static-x86_64: Process 11683 attached [pid 11682] <... setpgid resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11683] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11682] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11681] <... symlink resumed>) = 0 [pid 11678] <... clone3 resumed> => {parent_tid=[1097]}, 88) = 1097 [pid 11681] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11676] +++ killed by SIGIO +++ [pid 5045] umount2("./533", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11678] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11678] <... futex resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11678] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11683] <... rseq resumed>) = 0 [pid 11682] <... symlink resumed>) = 0 [pid 5046] unlink("./544/cgroup.net" [pid 5045] <... openat resumed>) = 3 [pid 11683] set_robust_list(0x7f504ff7f9a0, 24 [pid 11682] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11681] <... symlink resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1126, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] newfstatat(3, "", [pid 11683] <... set_robust_list resumed>) = 0 [pid 5051] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11683] rt_sigprocmask(SIG_SETMASK, [], [pid 11682] <... symlink resumed>) = 0 [pid 11683] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] getdents64(3, [pid 11683] open(".", O_RDONLY [pid 11682] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] getdents64(3, [pid 11683] <... open resumed>) = 3 [pid 5046] close(3 [pid 11683] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... close resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11683] <... futex resumed>) = 1 [pid 11681] <... openat resumed>) = 3 [pid 11683] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11678] <... futex resumed>) = 0 [pid 5046] rmdir("./544" [pid 11682] <... symlink resumed>) = 0 [pid 11681] write(3, "1000", 4 [pid 11678] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./533/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... openat resumed>) = 3 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11683] <... futex resumed>) = 0 [pid 11682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11681] <... write resumed>) = 4 [pid 11678] <... futex resumed>) = 1 [pid 5046] mkdir("./545", 0777 [pid 5045] newfstatat(AT_FDCWD, "./533/cgroup.cpu", [pid 11683] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11681] close(3 [pid 5051] getdents64(3, [pid 5045] unlink("./533/cgroup.cpu" [pid 11681] <... close resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11683] <... fcntl resumed>) = 0 [pid 11682] <... openat resumed>) = 3 [pid 11681] symlink("/dev/binderfs", "./binderfs" [pid 11678] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./533/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11681] <... symlink resumed>) = 0 [pid 5051] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11682] write(3, "1000", 4 [pid 11681] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11682] <... write resumed>) = 4 [pid 11681] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./562/cgroup.cpu", [pid 11682] close(3 [pid 11681] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11683] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11682] <... close resumed>) = 0 [pid 11681] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] unlink("./562/cgroup.cpu" [pid 11683] <... futex resumed>) = 1 [pid 11682] symlink("/dev/binderfs", "./binderfs" [pid 11681] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11678] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./533/binderfs", [pid 11682] <... symlink resumed>) = 0 [pid 11678] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11681] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11678] <... futex resumed>) = 0 [pid 11683] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11682] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11678] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./533/binderfs" [pid 5051] newfstatat(AT_FDCWD, "./562/binderfs", [pid 11682] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11682] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11681] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./562/binderfs"./strace-static-x86_64: Process 11684 attached [pid 11683] <... openat resumed>) = 4 [pid 11682] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11681] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1092 [pid 5045] umount2("./533/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11684] set_robust_list(0x555556ac56a0, 24 [pid 11683] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11682] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11681] <... mprotect resumed>) = 0 [pid 5051] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11682] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11681] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] newfstatat(AT_FDCWD, "./533/cgroup", [pid 11682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11684] <... set_robust_list resumed>) = 0 [pid 11681] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11678] <... futex resumed>) = ? [pid 5045] unlink("./533/cgroup" [pid 11684] chdir("./545" [pid 11683] +++ killed by SIGIO +++ [pid 11682] <... mmap resumed>) = 0x7f504ff5f000 [pid 11681] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./562/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./533/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11685 attached [pid 11682] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11681] <... clone3 resumed> => {parent_tid=[1130]}, 88) = 1130 [pid 11685] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11684] <... chdir resumed>) = 0 [pid 11681] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./562/cgroup" [pid 11685] <... rseq resumed>) = 0 [pid 11684] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11682] <... mprotect resumed>) = 0 [pid 11681] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11685] set_robust_list(0x7f504ff7f9a0, 24 [pid 11684] <... prctl resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./533/blkio.bfq.io_wait_time_recursive", [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11685] <... set_robust_list resumed>) = 0 [pid 11684] setpgid(0, 0 [pid 11682] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11681] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11685] rt_sigprocmask(SIG_SETMASK, [], [pid 11684] <... setpgid resumed>) = 0 [pid 11682] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11681] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11685] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11684] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11682] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11681] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11685] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 5045] unlink("./533/blkio.bfq.io_wait_time_recursive" [pid 11685] <... open resumed>) = 3 [pid 11678] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11686 attached [pid 11685] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11684] <... symlink resumed>) = 0 [pid 11682] <... clone3 resumed> => {parent_tid=[1103]}, 88) = 1103 [pid 5051] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 11686] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11685] <... futex resumed>) = 1 [pid 11684] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11682] rt_sigprocmask(SIG_SETMASK, [], [pid 11681] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11686] <... rseq resumed>) = 0 [pid 11685] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11682] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11681] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1096, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5045] <... unlink resumed>) = 0 [pid 11684] <... symlink resumed>) = 0 [pid 11686] set_robust_list(0x7f504ff7f9a0, 24 [pid 11685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11684] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11682] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11681] <... futex resumed>) = 0 [pid 5051] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11686] <... set_robust_list resumed>) = 0 [pid 11685] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11682] <... futex resumed>) = 0 [pid 11681] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./533/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11686] rt_sigprocmask(SIG_SETMASK, [], [pid 11685] <... fcntl resumed>) = 0 [pid 11682] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11684] <... symlink resumed>) = 0 [pid 5047] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./533/cgroup.net", [pid 11686] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11686] open(".", O_RDONLY [pid 11685] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 5047] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11686] <... open resumed>) = 3 [pid 11685] <... futex resumed>) = 1 [pid 11684] <... openat resumed>) = 3 [pid 11681] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./533/cgroup.net" [pid 11686] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11685] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11681] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11686] <... futex resumed>) = 1 [pid 11685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11684] write(3, "1000", 4 [pid 11682] <... futex resumed>) = 0 [pid 11681] <... futex resumed>) = 0 [pid 5051] unlink("./562/cgroup.net" [pid 5047] newfstatat(3, "", [pid 11686] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11685] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11684] <... write resumed>) = 4 [pid 11682] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11681] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11685] <... openat resumed>) = 4 [pid 11684] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11686] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11682] <... futex resumed>) = 0 [pid 11686] <... fcntl resumed>) = 0 [pid 11682] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11686] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] getdents64(3, [pid 11686] <... futex resumed>) = 0 [pid 11684] <... close resumed>) = 0 [pid 11682] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11686] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11685] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11684] symlink("/dev/binderfs", "./binderfs" [pid 11682] <... futex resumed>) = 0 [pid 11681] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] close(3 [pid 5047] getdents64(3, [pid 5045] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11684] <... symlink resumed>) = 0 [pid 11686] <... openat resumed>) = 4 [pid 11682] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... close resumed>) = 0 [pid 11685] +++ killed by SIGIO +++ [pid 5051] rmdir("./562" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] close(3) = 0 [pid 5047] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./533" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./547/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11681] +++ killed by SIGIO +++ [pid 5047] unlink("./547/cgroup.cpu") = 0 [pid 5045] mkdir("./534", 0777) = 0 [pid 5047] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11686] +++ killed by SIGIO +++ [pid 11682] +++ killed by SIGIO +++ [pid 5047] newfstatat(AT_FDCWD, "./547/binderfs", [pid 11684] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 11684] <... futex resumed>) = 0 [pid 5051] mkdir("./563", 0777 [pid 11684] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1129, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11684] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1102, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11687 attached [pid 11684] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] unlink("./547/binderfs" [pid 11684] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5050] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11684] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11687] set_robust_list(0x555556ac56a0, 24 [pid 11684] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11687] <... set_robust_list resumed>) = 0 [pid 11684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1128 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11689 attached ./strace-static-x86_64: Process 11688 attached [pid 11687] chdir("./563" [pid 5050] newfstatat(3, "", [pid 5049] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1070 [pid 11689] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11688] set_robust_list(0x555556ac56a0, 24 [pid 11687] <... chdir resumed>) = 0 [pid 11684] <... clone3 resumed> => {parent_tid=[1093]}, 88) = 1093 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... openat resumed>) = 3 [pid 11689] <... rseq resumed>) = 0 [pid 11688] <... set_robust_list resumed>) = 0 [pid 11687] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11684] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11689] set_robust_list(0x7f504ff7f9a0, 24 [pid 11688] chdir("./534" [pid 11687] <... prctl resumed>) = 0 [pid 11684] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(3, "", [pid 11689] <... set_robust_list resumed>) = 0 [pid 11684] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./547/cgroup", [pid 11689] rt_sigprocmask(SIG_SETMASK, [], [pid 11688] <... chdir resumed>) = 0 [pid 11687] setpgid(0, 0 [pid 11684] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11689] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11688] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11687] <... setpgid resumed>) = 0 [pid 11684] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11689] open(".", O_RDONLY [pid 11688] <... prctl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 11689] <... open resumed>) = 3 [pid 11688] setpgid(0, 0 [pid 11687] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] unlink("./563/cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./547/cgroup" [pid 11689] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11688] <... setpgid resumed>) = 0 [pid 11687] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11689] <... futex resumed>) = 1 [pid 11688] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11684] <... futex resumed>) = 0 [pid 5049] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11689] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11684] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11689] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11688] <... symlink resumed>) = 0 [pid 11687] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11684] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11687] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./550/cgroup.cpu", [pid 11687] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11689] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11688] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11687] <... symlink resumed>) = 0 [pid 11684] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11689] <... fcntl resumed>) = 0 [pid 5049] unlink("./550/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11688] <... symlink resumed>) = 0 [pid 11687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 11689] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11687] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 11689] <... futex resumed>) = 1 [pid 11688] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11684] <... futex resumed>) = 0 [pid 11689] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11687] write(3, "1000", 4 [pid 11684] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11689] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11688] <... symlink resumed>) = 0 [pid 11687] <... write resumed>) = 4 [pid 11684] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 11689] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11687] close(3 [pid 11684] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11687] <... close resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./550/binderfs", [pid 5047] <... unlink resumed>) = 0 [pid 11687] symlink("/dev/binderfs", "./binderfs" [pid 5047] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11689] <... openat resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./563/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11688] <... openat resumed>) = 3 [pid 11687] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./550/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11687] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 11689] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11687] <... futex resumed>) = 0 [pid 11684] <... futex resumed>) = 0 [pid 5050] unlink("./563/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11688] write(3, "1000", 4 [pid 11687] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./547/cgroup.net" [pid 11687] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11687] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11687] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5050] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11687] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] close(3 [pid 11688] <... write resumed>) = 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./550/cgroup", [pid 11688] close(3 [pid 5050] newfstatat(AT_FDCWD, "./563/cgroup", [pid 11687] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11688] <... close resumed>) = 0 [pid 11687] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] unlink("./563/cgroup" [pid 5049] unlink("./550/cgroup" [pid 5047] rmdir("./547" [pid 11688] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11688] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11688] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11688] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11688] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 11690 attached NULL, 8) = 0 [pid 11687] <... clone3 resumed> => {parent_tid=[1129]}, 88) = 1129 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 5047] mkdir("./548", 0777 [pid 11690] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11689] +++ killed by SIGIO +++ [pid 11688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11687] rt_sigprocmask(SIG_SETMASK, [], [pid 11684] +++ killed by SIGIO +++ [pid 5050] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11690] <... rseq resumed>) = 0 [pid 11687] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11690] set_robust_list(0x7f504ff7f9a0, 24 [pid 11688] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1092, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11687] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11690] <... set_robust_list resumed>) = 0 [pid 11688] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5050] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11688] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] newfstatat(AT_FDCWD, "./563/cgroup.net", [pid 5049] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./550/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11688] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./563/cgroup.net" [pid 11690] rt_sigprocmask(SIG_SETMASK, [], [pid 11688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11687] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./550/cgroup.net"./strace-static-x86_64: Process 11691 attached ./strace-static-x86_64: Process 11692 attached [pid 5046] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11690] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11687] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11692] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11691] set_robust_list(0x555556ac56a0, 24 [pid 11690] open(".", O_RDONLY [pid 11688] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 5050] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1098 [pid 5046] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11691] <... set_robust_list resumed>) = 0 [pid 11691] chdir("./548" [pid 11690] <... open resumed>) = 3 [pid 11688] rt_sigprocmask(SIG_SETMASK, [], [pid 11692] <... rseq resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] <... openat resumed>) = 3 [pid 11692] set_robust_list(0x7f504ff7f9a0, 24 [pid 11691] <... chdir resumed>) = 0 [pid 11690] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11688] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(3, "", [pid 11692] <... set_robust_list resumed>) = 0 [pid 11691] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11688] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] close(3 [pid 5049] close(3 [pid 11692] rt_sigprocmask(SIG_SETMASK, [], [pid 11691] <... prctl resumed>) = 0 [pid 11688] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11692] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11691] setpgid(0, 0 [pid 11690] <... futex resumed>) = 1 [pid 11688] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] rmdir("./563" [pid 11691] <... setpgid resumed>) = 0 [pid 5049] rmdir("./550" [pid 5046] getdents64(3, [pid 11692] open(".", O_RDONLY [pid 11691] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11690] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11687] <... futex resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11691] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 11691] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11687] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11692] <... open resumed>) = 3 [pid 11691] <... symlink resumed>) = 0 [pid 11690] <... futex resumed>) = 0 [pid 11687] <... futex resumed>) = 1 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11692] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11690] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11687] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] mkdir("./564", 0777 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11692] <... futex resumed>) = 1 [pid 11690] <... fcntl resumed>) = 0 [pid 11688] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./545/cgroup.cpu", [pid 11692] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11690] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11691] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11690] <... futex resumed>) = 1 [pid 11688] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11687] <... futex resumed>) = 0 [pid 5049] mkdir("./551", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11691] <... symlink resumed>) = 0 [pid 11690] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11688] <... futex resumed>) = 0 [pid 11687] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] unlink("./545/cgroup.cpu" [pid 11692] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11688] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11691] <... openat resumed>) = 3 [pid 11690] <... openat resumed>) = 4 [pid 11692] <... fcntl resumed>) = 0 [pid 11691] write(3, "1000", 4 [pid 11692] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11692] <... futex resumed>) = 1 [pid 11688] <... futex resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11692] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11688] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11687] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11688] <... futex resumed>) = 0 [pid 11687] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11692] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11688] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11691] <... write resumed>) = 4 [pid 5046] newfstatat(AT_FDCWD, "./545/binderfs", [pid 11691] close(3) = 0 [pid 11691] symlink("/dev/binderfs", "./binderfs" [pid 11692] <... openat resumed>) = 4 [pid 11691] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11693 attached [pid 11691] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1104 [pid 11693] set_robust_list(0x555556ac56a0, 24 [pid 11691] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11691] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11693] <... set_robust_list resumed>) = 0 [pid 11691] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11693] chdir("./551" [pid 11691] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] unlink("./545/binderfs" [pid 11691] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11693] <... chdir resumed>) = 0 [pid 11691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11693] setpgid(0, 0 [pid 11692] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11688] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11693] <... setpgid resumed>) = 0 [pid 11693] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11691] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11693] <... symlink resumed>) = 0 [pid 11691] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11693] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11691] <... mprotect resumed>) = 0 [pid 11693] <... symlink resumed>) = 0 [pid 11691] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./545/cgroup", [pid 11693] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11691] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11693] <... symlink resumed>) = 0 [pid 11691] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11695 attached [pid 11695] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] unlink("./545/cgroup" [pid 11695] <... rseq resumed>) = 0 [pid 11691] <... clone3 resumed> => {parent_tid=[1099]}, 88) = 1099 [pid 11695] set_robust_list(0x7f504ff7f9a0, 24 [pid 11693] <... openat resumed>) = 3 [pid 11691] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... unlink resumed>) = 0 [pid 11695] <... set_robust_list resumed>) = 0 [pid 11695] rt_sigprocmask(SIG_SETMASK, [], [pid 11691] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11695] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11691] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11695] open(".", O_RDONLY [pid 11693] write(3, "1000", 4 [pid 5046] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11694 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1131 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11695] <... open resumed>) = 3 [pid 11693] <... write resumed>) = 4 [pid 11691] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", [pid 11695] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11694] set_robust_list(0x555556ac56a0, 24 [pid 11693] close(3 [pid 11691] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11695] <... futex resumed>) = 0 [pid 11694] <... set_robust_list resumed>) = 0 [pid 11693] <... close resumed>) = 0 [pid 11691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11695] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11693] symlink("/dev/binderfs", "./binderfs" [pid 11691] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 11695] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11694] chdir("./564" [pid 11693] <... symlink resumed>) = 0 [pid 11691] <... futex resumed>) = 0 [pid 11690] +++ killed by SIGIO +++ [pid 11687] +++ killed by SIGIO +++ [pid 11695] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11693] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11691] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11695] <... fcntl resumed>) = 0 [pid 11694] <... chdir resumed>) = 0 [pid 11693] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11692] +++ killed by SIGIO +++ [pid 11688] +++ killed by SIGIO +++ [pid 11694] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1128, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11694] <... prctl resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11694] setpgid(0, 0) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./545/cgroup.net", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1070, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 11695] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11694] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11693] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11694] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11695] <... futex resumed>) = 1 [pid 11693] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11691] <... futex resumed>) = 0 [pid 5046] unlink("./545/cgroup.net" [pid 11695] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11693] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11691] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11695] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11694] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11693] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11691] <... futex resumed>) = 0 [pid 5051] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11695] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11694] <... symlink resumed>) = 0 [pid 11693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11691] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11694] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] getdents64(3, [pid 11695] <... openat resumed>) = 4 [pid 11694] <... symlink resumed>) = 0 [pid 11693] <... mmap resumed>) = 0x7f504ff5f000 [pid 11691] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11695] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11693] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11691] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11693] <... mprotect resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./534", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11694] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", [pid 5046] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11693] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11694] write(3, "1000", 4 [pid 11693] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 5046] rmdir("./545" [pid 5045] <... openat resumed>) = 3 [pid 11694] <... write resumed>) = 4 [pid 11693] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... rmdir resumed>) = 0 [pid 11694] close(3 [pid 5051] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11696 attached [pid 11694] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 5045] getdents64(3, [pid 11696] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11695] +++ killed by SIGIO +++ [pid 11694] symlink("/dev/binderfs", "./binderfs" [pid 11693] <... clone3 resumed> => {parent_tid=[1105]}, 88) = 1105 [pid 11691] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] mkdir("./546", 0777 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11696] <... rseq resumed>) = 0 [pid 11694] <... symlink resumed>) = 0 [pid 11693] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./563/cgroup.cpu" [pid 11696] set_robust_list(0x7f504ff7f9a0, 24 [pid 11694] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11693] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] umount2("./534/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11696] <... set_robust_list resumed>) = 0 [pid 11693] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1098, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11696] rt_sigprocmask(SIG_SETMASK, [], [pid 11694] <... futex resumed>) = 0 [pid 11693] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11696] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11693] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11696] open(".", O_RDONLY) = 3 [pid 5047] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11696] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... openat resumed>) = 3 [pid 11696] <... futex resumed>) = 1 [pid 11693] <... futex resumed>) = 0 [pid 11696] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11694] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11693] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11694] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11693] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./534/cgroup.cpu", [pid 11694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./563/binderfs", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11694] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11696] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11693] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11696] <... fcntl resumed>) = 0 [pid 11694] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./563/binderfs" [pid 5047] getdents64(3, [pid 5045] unlink("./534/cgroup.cpu" [pid 11696] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11694] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11696] <... futex resumed>) = 1 [pid 11693] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11696] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11694] <... mprotect resumed>) = 0 [pid 11693] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11693] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11696] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11694] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11693] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11696] <... openat resumed>) = 4 [pid 5051] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./534/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./548/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./548/cgroup.cpu" [pid 11694] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11697 attached [pid 11694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11693] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] newfstatat(AT_FDCWD, "./563/cgroup", [pid 5047] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11697] set_robust_list(0x555556ac56a0, 24 [pid 11696] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11693] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11697] <... set_robust_list resumed>) = 0 [pid 11697] chdir("./546" [pid 11696] <... futex resumed>) = ? [pid 5047] newfstatat(AT_FDCWD, "./548/binderfs", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./534/binderfs", [pid 11694] <... clone3 resumed> => {parent_tid=[1132]}, 88) = 1132 [pid 5051] unlink("./563/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11697] <... chdir resumed>) = 0 [pid 5047] unlink("./548/binderfs"./strace-static-x86_64: Process 11698 attached [pid 11697] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11694] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./534/binderfs" [pid 11698] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11697] <... prctl resumed>) = 0 [pid 11694] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1094 [pid 11694] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11697] setpgid(0, 0 [pid 11694] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11698] <... rseq resumed>) = 0 [pid 5047] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11697] <... setpgid resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11697] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] newfstatat(AT_FDCWD, "./548/cgroup", [pid 11696] +++ killed by SIGIO +++ [pid 11693] +++ killed by SIGIO +++ [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11698] set_robust_list(0x7f504ff7f9a0, 24 [pid 11697] <... symlink resumed>) = 0 [pid 11694] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 5047] unlink("./548/cgroup" [pid 5045] umount2("./534/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11697] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 11697] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11697] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", [pid 11698] <... set_robust_list resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./534/cgroup", [pid 11698] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1104, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11698] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11698] open(".", O_RDONLY [pid 11697] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./534/cgroup" [pid 11698] <... open resumed>) = 3 [pid 11697] <... openat resumed>) = 3 [pid 5051] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11698] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11697] write(3, "1000", 4 [pid 5047] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11697] <... write resumed>) = 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11697] close(3 [pid 5047] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 11697] <... close resumed>) = 0 [pid 11697] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11697] <... symlink resumed>) = 0 [pid 5047] unlink("./548/cgroup.net" [pid 11697] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11697] <... futex resumed>) = 0 [pid 11697] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11697] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] getdents64(3, [pid 11697] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11697] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5047] close(3) = 0 [pid 11697] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] rmdir("./548" [pid 11698] <... futex resumed>) = 1 [pid 11697] <... mprotect resumed>) = 0 [pid 11694] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... rmdir resumed>) = 0 [pid 5045] umount2("./534/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11698] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11697] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11694] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11698] <... futex resumed>) = 0 [pid 11694] <... futex resumed>) = 1 [pid 5049] <... openat resumed>) = 3 [pid 5051] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11694] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./534/blkio.bfq.io_wait_time_recursive", [pid 11698] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11697] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] mkdir("./549", 0777 [pid 11698] <... fcntl resumed>) = 0 [pid 11697] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./563/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] unlink("./534/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11699 attached [pid 11698] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11698] <... futex resumed>) = 1 [pid 11699] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11697] <... clone3 resumed> => {parent_tid=[1095]}, 88) = 1095 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11694] <... futex resumed>) = 0 [pid 11699] <... rseq resumed>) = 0 [pid 11698] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11697] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./563/cgroup.net" [pid 5049] getdents64(3, [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11700 attached [pid 11699] set_robust_list(0x7f504ff7f9a0, 24 [pid 11697] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11694] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11698] <... futex resumed>) = 0 [pid 11694] <... futex resumed>) = 1 [pid 11700] set_robust_list(0x555556ac56a0, 24 [pid 11699] <... set_robust_list resumed>) = 0 [pid 11698] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11697] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11694] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1100 [pid 5045] umount2("./534/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11700] <... set_robust_list resumed>) = 0 [pid 11699] rt_sigprocmask(SIG_SETMASK, [], [pid 11698] <... openat resumed>) = 4 [pid 11697] <... futex resumed>) = 0 [pid 11694] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11700] chdir("./549" [pid 11699] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11697] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./534/cgroup.net", [pid 11700] <... chdir resumed>) = 0 [pid 11699] open(".", O_RDONLY [pid 5049] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 11700] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11699] <... open resumed>) = 3 [pid 11698] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11694] restart_syscall(<... resuming interrupted futex ...> [pid 5051] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11700] <... prctl resumed>) = 0 [pid 11699] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11694] <... restart_syscall resumed>) = ? [pid 5051] <... close resumed>) = 0 [pid 5049] unlink("./551/cgroup.cpu" [pid 5045] unlink("./534/cgroup.net" [pid 11700] setpgid(0, 0 [pid 11699] <... futex resumed>) = 1 [pid 11698] +++ killed by SIGIO +++ [pid 11697] <... futex resumed>) = 0 [pid 11700] <... setpgid resumed>) = 0 [pid 11699] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11697] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./563" [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11700] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11699] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11699] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11697] <... futex resumed>) = 0 [pid 5049] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11700] <... symlink resumed>) = 0 [pid 11699] <... fcntl resumed>) = 0 [pid 11697] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11699] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] newfstatat(AT_FDCWD, "./551/binderfs", [pid 11699] <... futex resumed>) = 0 [pid 11697] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11700] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11699] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11697] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11700] <... symlink resumed>) = 0 [pid 11700] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11699] <... openat resumed>) = 4 [pid 5049] unlink("./551/binderfs" [pid 5045] getdents64(3, [pid 11700] <... symlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] mkdir("./564", 0777 [pid 5045] close(3 [pid 11699] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11697] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 11700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11699] <... futex resumed>) = ? [pid 5049] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... mkdir resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] rmdir("./534" [pid 11700] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./551/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11700] write(3, "1000", 4 [pid 5049] unlink("./551/cgroup" [pid 11694] +++ killed by SIGIO +++ [pid 11700] <... write resumed>) = 4 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1131, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] mkdir("./535", 0777./strace-static-x86_64: Process 11701 attached [pid 11700] close(3 [pid 11699] +++ killed by SIGIO +++ [pid 11697] +++ killed by SIGIO +++ [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1130 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5049] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11701] set_robust_list(0x555556ac56a0, 24 [pid 11700] <... close resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1094, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... mkdir resumed>) = 0 [pid 11701] <... set_robust_list resumed>) = 0 [pid 11700] symlink("/dev/binderfs", "./binderfs" [pid 5049] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11700] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11700] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./551/blkio.bfq.io_wait_time_recursive" [pid 11700] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11700] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5049] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11700] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 11700] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11700] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 11702 attached [pid 5050] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11702] set_robust_list(0x555556ac56a0, 24 [pid 11700] <... mprotect resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./551/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11702] <... set_robust_list resumed>) = 0 [pid 11700] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11702] chdir("./535" [pid 11701] chdir("./564" [pid 5049] <... unlink resumed>) = 0 [pid 11700] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11702] <... chdir resumed>) = 0 [pid 11700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] getdents64(3, ./strace-static-x86_64: Process 11703 attached [pid 11702] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... openat resumed>) = 3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11703] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11702] <... prctl resumed>) = 0 [pid 11700] <... clone3 resumed> => {parent_tid=[1101]}, 88) = 1101 [pid 5050] newfstatat(3, "", [pid 5049] close(3 [pid 5046] newfstatat(3, "", [pid 11703] <... rseq resumed>) = 0 [pid 11702] setpgid(0, 0 [pid 11701] <... chdir resumed>) = 0 [pid 11700] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... close resumed>) = 0 [pid 11703] set_robust_list(0x7f504ff7f9a0, 24 [pid 11702] <... setpgid resumed>) = 0 [pid 11701] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11700] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11703] <... set_robust_list resumed>) = 0 [pid 11702] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11701] <... prctl resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1072 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] getdents64(3, [pid 11701] setpgid(0, 0 [pid 5050] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11701] <... setpgid resumed>) = 0 [pid 11703] rt_sigprocmask(SIG_SETMASK, [], [pid 11702] <... symlink resumed>) = 0 [pid 11700] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./551" [pid 11703] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11702] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11701] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11700] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11703] open(".", O_RDONLY [pid 11702] <... symlink resumed>) = 0 [pid 11700] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... rmdir resumed>) = 0 [pid 11703] <... open resumed>) = 3 [pid 11702] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11701] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./564/cgroup.cpu", [pid 5046] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11703] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] mkdir("./552", 0777 [pid 11703] <... futex resumed>) = 1 [pid 11702] <... symlink resumed>) = 0 [pid 11701] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11700] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] unlink("./564/cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./546/cgroup.cpu", [pid 11703] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11701] <... symlink resumed>) = 0 [pid 11700] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11703] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11700] <... futex resumed>) = 0 [pid 11703] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11702] <... openat resumed>) = 3 [pid 11700] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11703] <... fcntl resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11703] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11702] write(3, "1000", 4 [pid 11701] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./546/cgroup.cpu" [pid 11703] <... futex resumed>) = 1 [pid 11700] <... futex resumed>) = 0 [pid 11703] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11700] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11703] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11703] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11700] <... futex resumed>) = 0 [pid 11703] <... openat resumed>) = 4 [pid 11702] <... write resumed>) = 4 [pid 11701] <... symlink resumed>) = 0 [pid 11700] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11704 attached [pid 11702] close(3 [pid 11701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] newfstatat(AT_FDCWD, "./564/binderfs", [pid 11703] +++ killed by SIGIO +++ [pid 11702] <... close resumed>) = 0 [pid 11701] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11704] set_robust_list(0x555556ac56a0, 24 [pid 11702] symlink("/dev/binderfs", "./binderfs" [pid 11701] write(3, "1000", 4 [pid 5050] unlink("./564/binderfs" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1106 [pid 11704] <... set_robust_list resumed>) = 0 [pid 11702] <... symlink resumed>) = 0 [pid 11701] <... write resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11701] close(3) = 0 [pid 5046] newfstatat(AT_FDCWD, "./546/binderfs", [pid 11702] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11701] symlink("/dev/binderfs", "./binderfs" [pid 5050] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11702] <... futex resumed>) = 0 [pid 11701] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11702] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./564/cgroup", [pid 11702] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11701] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./546/binderfs" [pid 11702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11701] <... futex resumed>) = 0 [pid 5050] unlink("./564/cgroup" [pid 11702] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11701] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11701] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11702] <... mmap resumed>) = 0x7f504ff5f000 [pid 11701] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11702] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11701] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11702] <... mprotect resumed>) = 0 [pid 11701] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", [pid 11702] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11701] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11704] chdir("./552" [pid 11700] +++ killed by SIGIO +++ [pid 11704] <... chdir resumed>) = 0 [pid 5046] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11702] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11701] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./564/blkio.bfq.io_wait_time_recursive" [pid 11704] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11701] <... mprotect resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11704] <... prctl resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1100, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./546/cgroup", ./strace-static-x86_64: Process 11705 attached [pid 11704] setpgid(0, 0 [pid 11702] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 11701] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11705] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11704] <... setpgid resumed>) = 0 [pid 11702] rt_sigprocmask(SIG_SETMASK, [], [pid 11701] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] unlink("./546/cgroup" [pid 11705] <... rseq resumed>) = 0 [pid 11704] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11702] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11701] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11705] set_robust_list(0x7f504ff7f9a0, 24 [pid 11704] <... symlink resumed>) = 0 [pid 11702] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11705] <... set_robust_list resumed>) = 0 [pid 11702] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./564/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11705] rt_sigprocmask(SIG_SETMASK, [], [pid 11704] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11702] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 11705] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11704] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11701] <... clone3 resumed> => {parent_tid=[1131]}, 88) = 1131 ./strace-static-x86_64: Process 11706 attached [pid 11705] open(".", O_RDONLY [pid 11704] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11701] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./564/cgroup.net" [pid 5047] <... openat resumed>) = 3 [pid 5046] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 11706] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11705] <... open resumed>) = 3 [pid 11704] <... symlink resumed>) = 0 [pid 11701] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5046] <... unlink resumed>) = 0 [pid 11706] <... rseq resumed>) = 0 [pid 11705] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11701] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 11705] <... futex resumed>) = 1 [pid 11702] <... futex resumed>) = 0 [pid 5047] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./546/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./549/cgroup.cpu", [pid 5046] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./549/cgroup.cpu" [pid 11704] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 5047] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 11704] write(3, "1000", 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./546" [pid 11704] <... write resumed>) = 4 [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./549/binderfs", [pid 11706] set_robust_list(0x7f504ff7f9a0, 24 [pid 11705] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11704] close(3 [pid 11702] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11701] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 11706] <... set_robust_list resumed>) = 0 [pid 11705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11704] <... close resumed>) = 0 [pid 11702] <... futex resumed>) = 0 [pid 11701] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11706] rt_sigprocmask(SIG_SETMASK, [], [pid 11705] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11704] symlink("/dev/binderfs", "./binderfs" [pid 11702] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... close resumed>) = 0 [pid 5047] unlink("./549/binderfs" [pid 5046] mkdir("./547", 0777 [pid 11706] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11705] <... fcntl resumed>) = 0 [pid 11704] <... symlink resumed>) = 0 [pid 5050] rmdir("./564" [pid 11706] open(".", O_RDONLY [pid 11705] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... rmdir resumed>) = 0 [pid 11706] <... open resumed>) = 3 [pid 11705] <... futex resumed>) = 1 [pid 11702] <... futex resumed>) = 0 [pid 5050] mkdir("./565", 0777 [pid 5047] <... unlink resumed>) = 0 [pid 11706] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11705] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11704] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11702] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... mkdir resumed>) = 0 [pid 11705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11704] <... futex resumed>) = 0 [pid 11702] <... futex resumed>) = 0 [pid 11705] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11704] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11702] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11706] <... futex resumed>) = 1 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11706] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11705] <... openat resumed>) = 4 [pid 11704] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11702] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11701] <... futex resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11705] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11702] restart_syscall(<... resuming interrupted futex ...> [pid 11701] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./549/cgroup", [pid 11706] <... futex resumed>) = 0 [pid 11702] <... restart_syscall resumed>) = ? [pid 11701] <... futex resumed>) = 1 ./strace-static-x86_64: Process 11708 attached ./strace-static-x86_64: Process 11707 attached [pid 11706] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11705] +++ killed by SIGIO +++ [pid 11704] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11701] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1096 [pid 11707] set_robust_list(0x555556ac56a0, 24 [pid 11706] <... fcntl resumed>) = 0 [pid 11704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] unlink("./549/cgroup" [pid 11707] <... set_robust_list resumed>) = 0 [pid 11706] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11704] <... mmap resumed>) = 0x7f504ff5f000 [pid 11701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11701] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11701] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11706] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11706] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11704] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11706] <... openat resumed>) = 4 [pid 11702] +++ killed by SIGIO +++ [pid 11707] chdir("./547" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1072, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11708] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1133 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11708] <... set_robust_list resumed>) = 0 [pid 11707] <... chdir resumed>) = 0 [pid 11708] chdir("./565" [pid 5047] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./535", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11707] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11707] <... prctl resumed>) = 0 [pid 11704] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 11708] <... chdir resumed>) = 0 [pid 11707] setpgid(0, 0 [pid 11704] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11707] <... setpgid resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11708] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11708] <... prctl resumed>) = 0 [pid 11707] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11706] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 5045] <... openat resumed>) = 3 [pid 11708] setpgid(0, 0 [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 11709 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11709] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5045] getdents64(3, [pid 11709] <... rseq resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11709] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5045] umount2("./535/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11709] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./535/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11708] <... setpgid resumed>) = 0 [pid 11707] <... symlink resumed>) = 0 [pid 5045] unlink("./535/cgroup.cpu" [pid 11704] <... clone3 resumed> => {parent_tid=[1107]}, 88) = 1107 [pid 11701] <... futex resumed>) = ? [pid 5047] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11708] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11707] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5047] newfstatat(AT_FDCWD, "./549/cgroup.net", [pid 5045] umount2("./535/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./535/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./535/binderfs") = 0 [pid 5045] umount2("./535/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11708] <... symlink resumed>) = 0 [pid 5047] unlink("./549/cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./535/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./535/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 11707] <... symlink resumed>) = 0 [pid 11704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11708] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11707] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11704] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./535/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11704] <... futex resumed>) = 1 [pid 11709] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11709] open(".", O_RDONLY [pid 11708] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./535/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./535/blkio.bfq.io_wait_time_recursive" [pid 11709] <... open resumed>) = 3 [pid 11707] <... symlink resumed>) = 0 [pid 11704] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11708] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11709] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11709] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] umount2("./535/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11708] <... symlink resumed>) = 0 [pid 11704] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 11707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11704] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11709] <... futex resumed>) = 0 [pid 11704] <... futex resumed>) = 1 [pid 5047] rmdir("./549" [pid 5045] newfstatat(AT_FDCWD, "./535/cgroup.net", [pid 11709] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11709] <... fcntl resumed>) = 0 [pid 11708] <... openat resumed>) = 3 [pid 5045] unlink("./535/cgroup.net") = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11709] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11709] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11707] <... openat resumed>) = 3 [pid 5045] getdents64(3, [pid 11708] write(3, "1000", 4 [pid 11704] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11704] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] close(3 [pid 11707] write(3, "1000", 4 [pid 11704] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... close resumed>) = 0 [pid 11709] <... futex resumed>) = 0 [pid 11708] <... write resumed>) = 4 [pid 11704] <... futex resumed>) = 1 [pid 11708] close(3 [pid 11707] <... write resumed>) = 4 [pid 11708] <... close resumed>) = 0 [pid 11709] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5045] rmdir("./535" [pid 11709] <... openat resumed>) = 4 [pid 11708] symlink("/dev/binderfs", "./binderfs" [pid 11707] close(3 [pid 11706] +++ killed by SIGIO +++ [pid 11704] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11701] +++ killed by SIGIO +++ [pid 5047] mkdir("./550", 0777 [pid 5045] <... rmdir resumed>) = 0 [pid 11709] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11707] <... close resumed>) = 0 [pid 11704] <... futex resumed>) = ? [pid 11709] +++ killed by SIGIO +++ [pid 5047] <... mkdir resumed>) = 0 [pid 11707] symlink("/dev/binderfs", "./binderfs" [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1130, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] mkdir("./536", 0777 [pid 11708] <... symlink resumed>) = 0 [pid 11707] <... symlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... mkdir resumed>) = 0 [pid 11708] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11707] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11708] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11707] <... futex resumed>) = 0 [pid 5051] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11707] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(3, "", [pid 11708] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11707] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11707] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./564/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11707] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./564/cgroup.cpu" [pid 11708] <... mmap resumed>) = 0x7f504ff5f000 [pid 11707] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... unlink resumed>) = 0 [pid 11708] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11707] <... mmap resumed>) = 0x7f504ff5f000 ./strace-static-x86_64: Process 11711 attached [pid 11708] <... mprotect resumed>) = 0 [pid 11707] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1102 [pid 11711] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1074 [pid 11708] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11711] <... set_robust_list resumed>) = 0 [pid 11707] <... mprotect resumed>) = 0 [pid 11711] chdir("./536" [pid 11708] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11707] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11711] <... chdir resumed>) = 0 [pid 11704] +++ killed by SIGIO +++ [pid 5051] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11711] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11710 attached [pid 11711] <... prctl resumed>) = 0 [pid 11708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11707] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./564/binderfs", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1106, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 11712 attached [pid 11711] setpgid(0, 0 [pid 11710] set_robust_list(0x555556ac56a0, 24 [pid 11707] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11712] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11711] <... setpgid resumed>) = 0 [pid 11710] <... set_robust_list resumed>) = 0 [pid 11708] <... clone3 resumed> => {parent_tid=[1134]}, 88) = 1134 [pid 5051] unlink("./564/binderfs" [pid 5049] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 11713 attached [pid 11712] <... rseq resumed>) = 0 [pid 11711] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11710] chdir("./550" [pid 11708] rt_sigprocmask(SIG_SETMASK, [], [pid 11713] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11712] set_robust_list(0x7f504ff7f9a0, 24 [pid 11710] <... chdir resumed>) = 0 [pid 11708] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11707] <... clone3 resumed> => {parent_tid=[1097]}, 88) = 1097 [pid 5051] <... unlink resumed>) = 0 [pid 11713] <... rseq resumed>) = 0 [pid 11712] <... set_robust_list resumed>) = 0 [pid 11710] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11708] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11707] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11711] <... symlink resumed>) = 0 [pid 11713] set_robust_list(0x7f504ff7f9a0, 24 [pid 11712] rt_sigprocmask(SIG_SETMASK, [], [pid 11710] <... prctl resumed>) = 0 [pid 11708] <... futex resumed>) = 0 [pid 11707] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11713] <... set_robust_list resumed>) = 0 [pid 11712] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11711] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11710] setpgid(0, 0 [pid 11708] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11707] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11713] rt_sigprocmask(SIG_SETMASK, [], [pid 11710] <... setpgid resumed>) = 0 [pid 11707] <... futex resumed>) = 0 [pid 11713] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11712] open(".", O_RDONLY [pid 11711] <... symlink resumed>) = 0 [pid 11710] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11707] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./564/cgroup", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11713] open(".", O_RDONLY [pid 11712] <... open resumed>) = 3 [pid 11711] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11713] <... open resumed>) = 3 [pid 11712] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11711] <... symlink resumed>) = 0 [pid 11710] <... symlink resumed>) = 0 [pid 5051] unlink("./564/cgroup" [pid 5049] <... openat resumed>) = 3 [pid 11713] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11712] <... futex resumed>) = 1 [pid 11708] <... futex resumed>) = 0 [pid 11713] <... futex resumed>) = 1 [pid 11712] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11710] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11708] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11707] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11713] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11710] <... symlink resumed>) = 0 [pid 11708] <... futex resumed>) = 0 [pid 11707] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11712] <... fcntl resumed>) = 0 [pid 11711] <... openat resumed>) = 3 [pid 11710] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11708] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11707] <... futex resumed>) = 0 [pid 5051] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 11713] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11712] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11707] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11711] write(3, "1000", 4 [pid 11713] <... fcntl resumed>) = 0 [pid 11712] <... futex resumed>) = 0 [pid 11710] <... symlink resumed>) = 0 [pid 11708] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11711] <... write resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11712] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11711] close(3 [pid 5051] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11713] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11708] <... futex resumed>) = 0 [pid 11713] <... futex resumed>) = 1 [pid 11712] <... openat resumed>) = 4 [pid 11711] <... close resumed>) = 0 [pid 11710] <... openat resumed>) = 3 [pid 11708] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11707] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11713] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11710] write(3, "1000", 4 [pid 11707] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11711] symlink("/dev/binderfs", "./binderfs" [pid 11710] <... write resumed>) = 4 [pid 11707] <... futex resumed>) = 0 [pid 5051] unlink("./564/blkio.bfq.io_wait_time_recursive" [pid 5049] newfstatat(AT_FDCWD, "./552/cgroup.cpu", [pid 11713] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11710] close(3 [pid 11707] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11713] <... openat resumed>) = 4 [pid 11711] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./552/cgroup.cpu" [pid 11710] <... close resumed>) = 0 [pid 11710] symlink("/dev/binderfs", "./binderfs" [pid 11711] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11710] <... symlink resumed>) = 0 [pid 5051] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11713] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11711] <... futex resumed>) = 0 [pid 11707] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11711] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11710] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./564/cgroup.net", [pid 5049] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11711] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11711] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11710] <... futex resumed>) = 0 [pid 11710] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11710] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11712] +++ killed by SIGIO +++ [pid 11711] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11710] <... mprotect resumed>) = 0 [pid 11708] +++ killed by SIGIO +++ [pid 5051] unlink("./564/cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./552/binderfs", [pid 11711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11710] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1133, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11710] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11711] <... mmap resumed>) = 0x7f504ff5f000 [pid 11710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11711] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] getdents64(3, [pid 5050] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./552/binderfs"./strace-static-x86_64: Process 11714 attached [pid 11711] <... mprotect resumed>) = 0 [pid 11710] <... clone3 resumed> => {parent_tid=[1103]}, 88) = 1103 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11714] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11710] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11714] <... rseq resumed>) = 0 [pid 11711] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11710] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] close(3 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 11714] set_robust_list(0x7f504ff7f9a0, 24 [pid 11713] +++ killed by SIGIO +++ [pid 11707] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 11714] <... set_robust_list resumed>) = 0 [pid 11711] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11710] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./564" [pid 5050] newfstatat(3, "", [pid 5049] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1096, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11714] rt_sigprocmask(SIG_SETMASK, [], [pid 11711] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11710] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11715 attached [pid 11714] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11710] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... rmdir resumed>) = 0 [pid 5050] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./552/cgroup", [pid 11715] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11714] open(".", O_RDONLY [pid 11711] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11715] <... rseq resumed>) = 0 [pid 5051] mkdir("./565", 0777 [pid 5049] unlink("./552/cgroup" [pid 11714] <... open resumed>) = 3 [pid 11711] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11714] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11711] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11714] <... futex resumed>) = 1 [pid 11710] <... futex resumed>) = 0 [pid 11714] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11710] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 5046] <... openat resumed>) = 3 [pid 11715] set_robust_list(0x7f504ff7f9a0, 24 [pid 11714] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11711] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11710] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11715] <... set_robust_list resumed>) = 0 [pid 11714] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11711] <... futex resumed>) = 0 [pid 11710] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./565/cgroup.cpu" [pid 5046] newfstatat(3, "", [pid 11715] rt_sigprocmask(SIG_SETMASK, [], [pid 11714] <... fcntl resumed>) = 0 [pid 11711] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11715] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11714] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11710] <... futex resumed>) = 0 [pid 11715] open(".", O_RDONLY [pid 11714] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11710] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11714] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11710] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11714] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11710] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./565/binderfs", [pid 11715] <... open resumed>) = 3 [pid 11714] <... openat resumed>) = 4 [pid 5049] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./547/cgroup.cpu", [pid 5050] unlink("./565/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11714] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11710] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... unlink resumed>) = 0 [pid 5046] unlink("./547/cgroup.cpu" [pid 11710] restart_syscall(<... resuming interrupted futex ...>) = ? [pid 5046] <... unlink resumed>) = 0 [pid 11714] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11716 attached [pid 11715] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11716] set_robust_list(0x555556ac56a0, 24 [pid 11715] <... futex resumed>) = 1 [pid 11711] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1132 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 11716] <... set_robust_list resumed>) = 0 [pid 11715] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11711] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11710] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./565/cgroup", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11711] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 11711] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./565/cgroup" [pid 11715] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1102, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... unlink resumed>) = 0 [pid 11715] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11715] <... fcntl resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./552/cgroup.net", [pid 11715] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11715] <... futex resumed>) = 1 [pid 11711] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./552/cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./547/binderfs", [pid 11715] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11711] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 11715] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11716] chdir("./565" [pid 11711] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11715] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11711] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./565/blkio.bfq.io_wait_time_recursive" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11715] <... openat resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11716] <... chdir resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5050] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./565/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5050] unlink("./565/cgroup.net" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11715] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] unlink("./547/binderfs" [pid 11716] <... prctl resumed>) = 0 [pid 11711] <... futex resumed>) = ? [pid 5050] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11716] setpgid(0, 0 [pid 5050] getdents64(3, [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11716] <... setpgid resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 5047] newfstatat(AT_FDCWD, "./550/cgroup.cpu", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11716] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] close(3 [pid 5049] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./547/cgroup", [pid 11716] <... symlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] rmdir("./552" [pid 5047] unlink("./550/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11716] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 5050] rmdir("./565" [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./547/cgroup" [pid 11716] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] <... rmdir resumed>) = 0 [pid 11716] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5047] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./550/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] mkdir("./566", 0777 [pid 5049] mkdir("./553", 0777 [pid 5046] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 11716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] unlink("./550/binderfs" [pid 11715] +++ killed by SIGIO +++ [pid 11711] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11716] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 11716] write(3, "1000", 4 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1074, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11716] <... write resumed>) = 4 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11716] close(3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 11717 attached [pid 11716] <... close resumed>) = 0 [pid 5047] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11717] set_robust_list(0x555556ac56a0, 24 [pid 11716] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./550/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11717] <... set_robust_list resumed>) = 0 [pid 11716] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 5045] umount2("./536", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11717] chdir("./566") = 0 [pid 11716] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11717] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11716] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] unlink("./550/cgroup" [pid 5046] unlink("./547/cgroup.net" [pid 5045] openat(AT_FDCWD, "./536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11717] <... prctl resumed>) = 0 [pid 11716] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11717] setpgid(0, 0 [pid 11716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... unlink resumed>) = 0 [pid 11716] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(3, "", [pid 11717] <... setpgid resumed>) = 0 [pid 11716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5047] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11718 attached [pid 11717] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11716] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1135 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5045] getdents64(3, [pid 11718] set_robust_list(0x555556ac56a0, 24 [pid 5047] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11718] <... set_robust_list resumed>) = 0 [pid 11716] <... mprotect resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1108 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11718] chdir("./553" [pid 5046] <... close resumed>) = 0 [pid 11717] <... symlink resumed>) = 0 [pid 11716] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 5046] rmdir("./547" [pid 5045] umount2("./536/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11718] <... chdir resumed>) = 0 [pid 11717] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11716] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11718] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./550/cgroup.net", [pid 11717] <... symlink resumed>) = 0 [pid 11718] <... prctl resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./536/cgroup.cpu", [pid 5047] unlink("./550/cgroup.net" [pid 5046] mkdir("./548", 0777 [pid 11718] setpgid(0, 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11719 attached [pid 11718] <... setpgid resumed>) = 0 [pid 11717] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11716] <... clone3 resumed> => {parent_tid=[1133]}, 88) = 1133 [pid 11719] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5047] getdents64(3, [pid 11719] <... rseq resumed>) = 0 [pid 11717] <... symlink resumed>) = 0 [pid 11716] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] unlink("./536/cgroup.cpu" [pid 11719] set_robust_list(0x7f504ff7f9a0, 24 [pid 11718] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] close(3 [pid 11719] <... set_robust_list resumed>) = 0 [pid 11718] <... symlink resumed>) = 0 [pid 11717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11716] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] rmdir("./550" [pid 11719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11718] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11716] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1098 [pid 5045] umount2("./536/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11720 attached [pid 11719] open(".", O_RDONLY [pid 11718] <... symlink resumed>) = 0 [pid 11717] <... openat resumed>) = 3 [pid 11716] <... futex resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11719] <... open resumed>) = 3 [pid 11716] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11718] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11717] write(3, "1000", 4 [pid 11720] set_robust_list(0x555556ac56a0, 24 [pid 11719] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] newfstatat(AT_FDCWD, "./536/binderfs", [pid 5047] mkdir("./551", 0777 [pid 11719] <... futex resumed>) = 0 [pid 11718] <... symlink resumed>) = 0 [pid 11716] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11720] <... set_robust_list resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11717] <... write resumed>) = 4 [pid 11716] <... futex resumed>) = 0 [pid 11719] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11720] chdir("./548" [pid 11719] <... fcntl resumed>) = 0 [pid 11718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11717] close(3 [pid 11716] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./536/binderfs"./strace-static-x86_64: Process 11721 attached [pid 11720] <... chdir resumed>) = 0 [pid 11719] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11717] <... close resumed>) = 0 [pid 11716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11721] set_robust_list(0x555556ac56a0, 24 [pid 11720] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11719] <... futex resumed>) = 0 [pid 11717] symlink("/dev/binderfs", "./binderfs" [pid 11716] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11718] <... openat resumed>) = 3 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1104 [pid 5045] <... unlink resumed>) = 0 [pid 11721] <... set_robust_list resumed>) = 0 [pid 11720] <... prctl resumed>) = 0 [pid 11721] chdir("./551" [pid 11720] setpgid(0, 0 [pid 11718] write(3, "1000", 4 [pid 11719] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11717] <... symlink resumed>) = 0 [pid 11716] <... futex resumed>) = 0 [pid 5045] umount2("./536/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11721] <... chdir resumed>) = 0 [pid 11720] <... setpgid resumed>) = 0 [pid 11718] <... write resumed>) = 4 [pid 11717] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11716] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11718] close(3 [pid 5045] newfstatat(AT_FDCWD, "./536/cgroup", [pid 11717] <... futex resumed>) = 0 [pid 11718] <... close resumed>) = 0 [pid 11717] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11718] symlink("/dev/binderfs", "./binderfs" [pid 11717] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11716] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11721] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11720] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11718] <... symlink resumed>) = 0 [pid 11717] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11716] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11719] <... openat resumed>) = 4 [pid 5045] unlink("./536/cgroup" [pid 11721] <... prctl resumed>) = 0 [pid 11721] setpgid(0, 0 [pid 11720] <... symlink resumed>) = 0 [pid 11717] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11721] <... setpgid resumed>) = 0 [pid 11721] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11720] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11719] +++ killed by SIGIO +++ [pid 11718] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] umount2("./536/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11718] <... futex resumed>) = 0 [pid 11717] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11721] <... symlink resumed>) = 0 [pid 11718] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11717] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] newfstatat(AT_FDCWD, "./536/blkio.bfq.io_wait_time_recursive", [pid 11721] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11720] <... symlink resumed>) = 0 [pid 11718] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11717] <... mprotect resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11721] <... symlink resumed>) = 0 [pid 11718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11717] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11718] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11717] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] unlink("./536/blkio.bfq.io_wait_time_recursive" [pid 11718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11717] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11722 attached [pid 11721] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11720] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11718] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... unlink resumed>) = 0 [pid 11722] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11720] <... symlink resumed>) = 0 [pid 11718] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11717] <... clone3 resumed> => {parent_tid=[1136]}, 88) = 1136 [pid 11722] <... rseq resumed>) = 0 [pid 11718] <... mprotect resumed>) = 0 [pid 11722] set_robust_list(0x7f504ff7f9a0, 24 [pid 11721] <... symlink resumed>) = 0 [pid 11720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11718] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11717] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] umount2("./536/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11722] <... set_robust_list resumed>) = 0 [pid 11721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11722] rt_sigprocmask(SIG_SETMASK, [], [pid 11718] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11717] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11722] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11721] <... openat resumed>) = 3 [pid 11720] <... openat resumed>) = 3 [pid 11718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11717] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./536/cgroup.net", [pid 11722] open(".", O_RDONLY [pid 11721] write(3, "1000", 4 [pid 11720] write(3, "1000", 4 [pid 11717] <... futex resumed>) = 0 [pid 11716] +++ killed by SIGIO +++ [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11723 attached [pid 11722] <... open resumed>) = 3 [pid 11721] <... write resumed>) = 4 [pid 11720] <... write resumed>) = 4 [pid 11717] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1132, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11723] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11722] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11721] close(3 [pid 11720] close(3 [pid 11718] <... clone3 resumed> => {parent_tid=[1109]}, 88) = 1109 [pid 11717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] unlink("./536/cgroup.net" [pid 11723] <... rseq resumed>) = 0 [pid 11722] <... futex resumed>) = 0 [pid 11721] <... close resumed>) = 0 [pid 11720] <... close resumed>) = 0 [pid 11718] rt_sigprocmask(SIG_SETMASK, [], [pid 11717] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11723] set_robust_list(0x7f504ff7f9a0, 24 [pid 11722] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11721] symlink("/dev/binderfs", "./binderfs" [pid 11718] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11717] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11723] <... set_robust_list resumed>) = 0 [pid 11722] <... fcntl resumed>) = 0 [pid 11721] <... symlink resumed>) = 0 [pid 11720] symlink("/dev/binderfs", "./binderfs" [pid 11718] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11717] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11722] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11721] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11723] rt_sigprocmask(SIG_SETMASK, [], [pid 11722] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11721] <... futex resumed>) = 0 [pid 11720] <... symlink resumed>) = 0 [pid 11718] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11723] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11721] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11718] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] getdents64(3, [pid 11721] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11717] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] close(3 [pid 11721] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5045] <... close resumed>) = 0 [pid 11722] <... futex resumed>) = 0 [pid 11721] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11720] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11717] <... futex resumed>) = 1 [pid 11722] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11721] <... mmap resumed>) = 0x7f504ff5f000 [pid 11721] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... openat resumed>) = 3 [pid 11720] <... futex resumed>) = 0 [pid 5045] rmdir("./536" [pid 11720] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11717] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11722] <... openat resumed>) = 4 [pid 11721] <... mprotect resumed>) = 0 [pid 11720] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11721] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... rmdir resumed>) = 0 [pid 11721] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11721] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11723] open(".", O_RDONLY [pid 11720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] getdents64(3, [pid 11720] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11724 attached [pid 11723] <... open resumed>) = 3 [pid 11720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] mkdir("./537", 0777 [pid 11724] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11723] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11721] <... clone3 resumed> => {parent_tid=[1105]}, 88) = 1105 [pid 11724] <... rseq resumed>) = 0 [pid 11722] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11721] rt_sigprocmask(SIG_SETMASK, [], [pid 11724] set_robust_list(0x7f504ff7f9a0, 24 [pid 11721] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11717] <... futex resumed>) = ? [pid 11724] <... set_robust_list resumed>) = 0 [pid 11722] +++ killed by SIGIO +++ [pid 11721] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11720] <... mmap resumed>) = 0x7f504ff5f000 [pid 11724] rt_sigprocmask(SIG_SETMASK, [], [pid 11723] <... futex resumed>) = 1 [pid 11721] <... futex resumed>) = 0 [pid 11718] <... futex resumed>) = 0 [pid 5051] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 11724] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11723] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11721] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11720] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11718] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11724] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 11724] <... open resumed>) = 3 [pid 11724] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11724] <... futex resumed>) = 1 [pid 11724] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11723] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11721] <... futex resumed>) = 0 [pid 11720] <... mprotect resumed>) = 0 [pid 11718] <... futex resumed>) = 0 [pid 11717] +++ killed by SIGIO +++ [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11723] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11721] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11720] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11718] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./565/cgroup.cpu" [pid 11724] <... futex resumed>) = 0 [pid 11723] <... fcntl resumed>) = 0 [pid 11721] <... futex resumed>) = 1 [pid 11720] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11724] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11723] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1135, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11724] <... fcntl resumed>) = 0 [pid 11721] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11723] <... futex resumed>) = 1 [pid 11720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11723] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11718] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11726 attached ./strace-static-x86_64: Process 11725 attached [pid 11724] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11721] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11718] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1076 [pid 11726] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11723] <... futex resumed>) = 0 [pid 11721] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11720] <... clone3 resumed> => {parent_tid=[1099]}, 88) = 1099 [pid 11718] <... futex resumed>) = 1 [pid 5050] <... restart_syscall resumed>) = 0 [pid 11726] <... rseq resumed>) = 0 [pid 11725] set_robust_list(0x555556ac56a0, 24 [pid 11723] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11721] <... futex resumed>) = 0 [pid 11720] rt_sigprocmask(SIG_SETMASK, [], [pid 11718] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11725] <... set_robust_list resumed>) = 0 [pid 11724] <... futex resumed>) = 0 [pid 11724] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11723] <... openat resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./565/binderfs", [pid 11724] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11724] +++ killed by SIGIO +++ [pid 11725] chdir("./537" [pid 11726] set_robust_list(0x7f504ff7f9a0, 24 [pid 11720] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11726] <... set_robust_list resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11726] rt_sigprocmask(SIG_SETMASK, [], [pid 11725] <... chdir resumed>) = 0 [pid 11720] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11718] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./565/binderfs" [pid 5050] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11723] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11726] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11725] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11720] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11726] open(".", O_RDONLY [pid 11725] <... prctl resumed>) = 0 [pid 11723] +++ killed by SIGIO +++ [pid 11721] +++ killed by SIGIO +++ [pid 11720] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11726] <... open resumed>) = 3 [pid 11725] setpgid(0, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 11726] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11725] <... setpgid resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./565/cgroup", [pid 5050] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1104, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11726] <... futex resumed>) = 1 [pid 11725] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11720] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11726] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11725] <... symlink resumed>) = 0 [pid 11720] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11718] +++ killed by SIGIO +++ [pid 5051] unlink("./565/cgroup" [pid 5047] <... restart_syscall resumed>) = 0 [pid 11726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11725] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11720] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 11726] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1108, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11725] <... symlink resumed>) = 0 [pid 5051] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11726] <... fcntl resumed>) = 0 [pid 11720] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11726] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11725] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11725] <... symlink resumed>) = 0 [pid 11720] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11720] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11726] <... futex resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11726] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5051] unlink("./565/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 5049] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11726] <... openat resumed>) = 4 [pid 11725] <... openat resumed>) = 3 [pid 11725] write(3, "1000", 4 [pid 5051] <... unlink resumed>) = 0 [pid 11725] <... write resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 11725] close(3) = 0 [pid 11725] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./566/cgroup.cpu" [pid 5049] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 11725] <... symlink resumed>) = 0 [pid 11725] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./565/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 11725] <... futex resumed>) = 0 [pid 11725] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11725] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... openat resumed>) = 3 [pid 11725] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5051] unlink("./565/cgroup.net" [pid 5050] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11725] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11726] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11725] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 11725] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11720] <... futex resumed>) = ? [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./566/binderfs", [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11726] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11727 attached [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./551/cgroup.cpu" [pid 11727] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11725] <... clone3 resumed> => {parent_tid=[1077]}, 88) = 1077 [pid 5051] close(3 [pid 5050] unlink("./566/binderfs" [pid 5049] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11725] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11727] <... rseq resumed>) = 0 [pid 11725] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] rmdir("./565" [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 5047] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11727] set_robust_list(0x7f504ff7f9a0, 24 [pid 11725] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11727] <... set_robust_list resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11727] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./551/binderfs", [pid 11727] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11725] <... futex resumed>) = 0 [pid 11720] +++ killed by SIGIO +++ [pid 5049] unlink("./553/cgroup.cpu" [pid 11725] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] mkdir("./566", 0777 [pid 5050] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11727] open(".", O_RDONLY [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11727] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./566/cgroup", [pid 5049] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./551/binderfs" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1098, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11727] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11727] <... futex resumed>) = 1 [pid 5049] newfstatat(AT_FDCWD, "./553/binderfs", [pid 5047] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... restart_syscall resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11727] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11725] <... futex resumed>) = 0 [pid 5050] unlink("./566/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./551/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./551/cgroup" [pid 5049] unlink("./553/binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./551/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11728 attached ) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 5050] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11728] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./553/cgroup", [pid 5046] <... openat resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 11728] <... set_robust_list resumed>) = 0 [pid 11725] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11728] chdir("./566" [pid 11727] <... futex resumed>) = 0 [pid 11725] <... futex resumed>) = 1 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./551/cgroup.net" [pid 5046] newfstatat(3, "", [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1134 [pid 5050] unlink("./566/blkio.bfq.io_wait_time_recursive" [pid 11728] <... chdir resumed>) = 0 [pid 11727] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11725] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./553/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11728] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11727] <... fcntl resumed>) = 0 [pid 11728] <... prctl resumed>) = 0 [pid 11727] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 11728] setpgid(0, 0 [pid 11727] <... futex resumed>) = 1 [pid 11725] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] getdents64(3, [pid 11728] <... setpgid resumed>) = 0 [pid 11727] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11725] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 11725] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11728] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11727] <... openat resumed>) = 4 [pid 11725] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] newfstatat(AT_FDCWD, "./566/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 5046] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11728] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 5047] rmdir("./551" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./566/cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./548/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./548/cgroup.cpu" [pid 5050] close(3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./553/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] rmdir("./566" [pid 5049] unlink("./553/cgroup.net" [pid 11728] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11727] +++ killed by SIGIO +++ [pid 11725] +++ killed by SIGIO +++ [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./552", 0777) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1076, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5045] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5049] getdents64(3, [pid 5050] mkdir("./567", 0777 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11728] <... symlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11728] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] close(3 [pid 5046] newfstatat(AT_FDCWD, "./548/binderfs", [pid 5045] umount2("./537", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11729 attached [pid 11728] <... symlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11729] set_robust_list(0x555556ac56a0, 24 [pid 5049] rmdir("./553" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11729] <... set_robust_list resumed>) = 0 [pid 11728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] unlink("./548/binderfs" [pid 11728] <... openat resumed>) = 3 [pid 5049] <... rmdir resumed>) = 0 [pid 11729] chdir("./552" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5045] newfstatat(3, "", [pid 11729] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 11730 attached [pid 11729] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11728] write(3, "1000", 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1137 [pid 5049] mkdir("./554", 0777 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1106 [pid 5046] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11730] set_robust_list(0x555556ac56a0, 24 [pid 11729] <... prctl resumed>) = 0 [pid 11728] <... write resumed>) = 4 [pid 5049] <... mkdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11730] <... set_robust_list resumed>) = 0 [pid 11729] setpgid(0, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11730] chdir("./567" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11730] <... chdir resumed>) = 0 [pid 11729] <... setpgid resumed>) = 0 [pid 11728] close(3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./548/cgroup", [pid 5045] umount2("./537/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11730] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11729] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11728] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11730] <... prctl resumed>) = 0 [pid 11728] symlink("/dev/binderfs", "./binderfs" [pid 11729] <... symlink resumed>) = 0 [pid 5046] unlink("./548/cgroup" [pid 11730] setpgid(0, 0 [pid 5045] newfstatat(AT_FDCWD, "./537/cgroup.cpu", [pid 5046] <... unlink resumed>) = 0 [pid 11730] <... setpgid resumed>) = 0 [pid 11729] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11730] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11728] <... symlink resumed>) = 0 [pid 5045] unlink("./537/cgroup.cpu" [pid 5046] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11728] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11730] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11731 attached [pid 11728] <... futex resumed>) = 0 [pid 11729] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./537/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11731] set_robust_list(0x555556ac56a0, 24 [pid 11728] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11731] <... set_robust_list resumed>) = 0 [pid 11730] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11731] chdir("./554" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1110 [pid 11731] <... chdir resumed>) = 0 [pid 11730] <... symlink resumed>) = 0 [pid 11729] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11728] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11731] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11731] <... prctl resumed>) = 0 [pid 11730] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11731] setpgid(0, 0 [pid 11730] <... symlink resumed>) = 0 [pid 11729] <... symlink resumed>) = 0 [pid 11728] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./537/binderfs", [pid 11731] <... setpgid resumed>) = 0 [pid 11730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11731] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11728] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] unlink("./537/binderfs" [pid 11730] <... openat resumed>) = 3 [pid 11729] <... openat resumed>) = 3 [pid 11728] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11731] <... symlink resumed>) = 0 [pid 11730] write(3, "1000", 4 [pid 11729] write(3, "1000", 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11731] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11730] <... write resumed>) = 4 [pid 11729] <... write resumed>) = 4 [pid 11728] <... mprotect resumed>) = 0 [pid 11731] <... symlink resumed>) = 0 [pid 11730] close(3 [pid 11729] close(3 [pid 11728] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 5045] umount2("./537/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11731] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11730] <... close resumed>) = 0 [pid 11729] <... close resumed>) = 0 [pid 11728] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11730] symlink("/dev/binderfs", "./binderfs" [pid 11728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] unlink("./548/cgroup.net" [pid 11731] <... symlink resumed>) = 0 [pid 11730] <... symlink resumed>) = 0 [pid 11729] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11732 attached [pid 5046] <... unlink resumed>) = 0 [pid 11728] <... clone3 resumed> => {parent_tid=[1135]}, 88) = 1135 [pid 11731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11730] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./537/cgroup", [pid 11732] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11728] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] getdents64(3, [pid 11732] <... rseq resumed>) = 0 [pid 11728] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11732] set_robust_list(0x7f504ff7f9a0, 24 [pid 11730] <... futex resumed>) = 0 [pid 11729] <... symlink resumed>) = 0 [pid 11728] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11732] <... set_robust_list resumed>) = 0 [pid 11730] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11729] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11728] <... futex resumed>) = 0 [pid 11731] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./537/cgroup" [pid 11732] rt_sigprocmask(SIG_SETMASK, [], [pid 11731] write(3, "1000", 4 [pid 11730] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11729] <... futex resumed>) = 0 [pid 11728] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11732] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11731] <... write resumed>) = 4 [pid 11730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11729] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11732] open(".", O_RDONLY [pid 11731] close(3 [pid 11730] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11729] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] umount2("./537/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11731] <... close resumed>) = 0 [pid 11730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11729] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] rmdir("./548" [pid 11732] <... open resumed>) = 3 [pid 11731] symlink("/dev/binderfs", "./binderfs" [pid 11730] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11732] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11730] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11729] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./537/blkio.bfq.io_wait_time_recursive", [pid 11732] <... futex resumed>) = 1 [pid 11731] <... symlink resumed>) = 0 [pid 11730] <... mprotect resumed>) = 0 [pid 11729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11732] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11730] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11729] <... mmap resumed>) = 0x7f504ff5f000 [pid 11728] <... futex resumed>) = 0 [pid 11731] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... rmdir resumed>) = 0 [pid 11731] <... futex resumed>) = 0 [pid 11728] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11730] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11729] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] unlink("./537/blkio.bfq.io_wait_time_recursive" [pid 11732] <... futex resumed>) = 0 [pid 11731] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11729] <... mprotect resumed>) = 0 [pid 11728] <... futex resumed>) = 1 [pid 5046] mkdir("./549", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 11732] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11731] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11728] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11732] <... fcntl resumed>) = 0 [pid 11731] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11731] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 11733 attached [pid 11732] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11731] <... mmap resumed>) = 0x7f504ff5f000 [pid 11729] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] umount2("./537/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11733] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11730] <... clone3 resumed> => {parent_tid=[1138]}, 88) = 1138 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11733] <... rseq resumed>) = 0 [pid 11732] <... futex resumed>) = 1 [pid 11731] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11730] rt_sigprocmask(SIG_SETMASK, [], [pid 11729] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11728] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./537/cgroup.net", [pid 11733] set_robust_list(0x7f504ff7f9a0, 24 [pid 11732] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11731] <... mprotect resumed>) = 0 [pid 11730] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11729] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11728] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11734 attached [pid 11733] <... set_robust_list resumed>) = 0 [pid 11732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11731] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11730] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11728] <... futex resumed>) = 0 [pid 11734] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11733] rt_sigprocmask(SIG_SETMASK, [], [pid 11732] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11728] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11731] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11734] <... rseq resumed>) = 0 [pid 11733] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11730] <... futex resumed>) = 0 [pid 11729] <... clone3 resumed> => {parent_tid=[1107]}, 88) = 1107 [pid 5045] unlink("./537/cgroup.net" [pid 11733] open(".", O_RDONLY [pid 11730] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11729] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... unlink resumed>) = 0 [pid 11732] <... openat resumed>) = 4 [pid 11729] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] getdents64(3, [pid 11729] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11729] <... futex resumed>) = 0 [pid 5045] close(3 [pid 11729] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... close resumed>) = 0 [pid 5045] rmdir("./537"./strace-static-x86_64: Process 11735 attached [pid 11735] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11734] set_robust_list(0x7f504ff7f9a0, 24 [pid 11733] <... open resumed>) = 3 [pid 11732] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11731] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11728] <... futex resumed>) = -1 (errno 18446744073709551181) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1100 [pid 5045] <... rmdir resumed>) = 0 [pid 11735] chdir("./549" [pid 11734] <... set_robust_list resumed>) = 0 [pid 11733] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11736 attached [pid 11734] rt_sigprocmask(SIG_SETMASK, [], [pid 11736] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11734] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11736] <... rseq resumed>) = 0 [pid 11735] <... chdir resumed>) = 0 [pid 5045] mkdir("./538", 0777 [pid 11736] set_robust_list(0x7f504ff7f9a0, 24 [pid 11735] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11734] open(".", O_RDONLY [pid 11733] <... futex resumed>) = 1 [pid 11730] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11736] <... set_robust_list resumed>) = 0 [pid 11735] <... prctl resumed>) = 0 [pid 11733] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11730] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11734] <... open resumed>) = 3 [pid 11733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11734] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11733] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11736] rt_sigprocmask(SIG_SETMASK, [], [pid 11735] setpgid(0, 0 [pid 11733] <... fcntl resumed>) = 0 [pid 11730] <... futex resumed>) = 0 [pid 11736] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11735] <... setpgid resumed>) = 0 [pid 11734] <... futex resumed>) = 1 [pid 11733] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11731] <... clone3 resumed> => {parent_tid=[1111]}, 88) = 1111 [pid 11730] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11729] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11736] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11735] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11734] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11733] <... futex resumed>) = 0 [pid 11732] +++ killed by SIGIO +++ [pid 11731] rt_sigprocmask(SIG_SETMASK, [], [pid 11730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11729] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11728] +++ killed by SIGIO +++ [pid 11730] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11730] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11734] <... fcntl resumed>) = 0 [pid 11731] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11733] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11735] <... symlink resumed>) = 0 [pid 11734] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11731] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11729] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1134, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11737 attached [pid 11734] <... futex resumed>) = 0 [pid 11729] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 11737] set_robust_list(0x555556ac56a0, 24 [pid 11736] <... futex resumed>) = 0 [pid 11735] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11734] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11731] <... futex resumed>) = 1 [pid 11729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... restart_syscall resumed>) = 0 [pid 11737] <... set_robust_list resumed>) = 0 [pid 11736] open(".", O_RDONLY [pid 11735] <... symlink resumed>) = 0 [pid 11734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11731] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11729] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1078 [pid 11737] chdir("./538" [pid 11736] <... open resumed>) = 3 [pid 11734] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11729] <... futex resumed>) = 0 [pid 11729] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11737] <... chdir resumed>) = 0 [pid 11735] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11737] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11736] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11735] <... symlink resumed>) = 0 [pid 11733] <... openat resumed>) = 4 [pid 11737] <... prctl resumed>) = 0 [pid 11736] <... futex resumed>) = 1 [pid 11734] <... openat resumed>) = 4 [pid 11733] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11731] <... futex resumed>) = 0 [pid 5051] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11737] setpgid(0, 0 [pid 11736] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11734] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11731] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11730] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11737] <... setpgid resumed>) = 0 [pid 11736] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11733] +++ killed by SIGIO +++ [pid 11731] <... futex resumed>) = 0 [pid 11730] +++ killed by SIGIO +++ [pid 11729] <... futex resumed>) = ? [pid 11737] symlink("/syzcgroup/unified/syz1", "./cgroup") = 0 [pid 11735] <... openat resumed>) = 3 [pid 11737] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11735] write(3, "1000", 4) = 4 [pid 11737] <... symlink resumed>) = 0 [pid 11735] close(3 [pid 11737] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11735] <... close resumed>) = 0 [pid 11735] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11737] <... symlink resumed>) = 0 [pid 11735] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1137, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11736] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11735] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11731] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11737] <... openat resumed>) = 3 [pid 11736] <... fcntl resumed>) = 0 [pid 11735] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11734] +++ killed by SIGIO +++ [pid 11729] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 11737] write(3, "1000", 4 [pid 11736] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11735] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1106, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11737] <... write resumed>) = 4 [pid 11736] <... futex resumed>) = 1 [pid 11735] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11731] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11737] close(3 [pid 11736] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11731] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11736] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11731] <... futex resumed>) = 0 [pid 5051] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11736] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11731] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11737] <... close resumed>) = 0 [pid 11736] <... openat resumed>) = 4 [pid 11735] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 5047] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11737] symlink("/dev/binderfs", "./binderfs" [pid 11736] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11735] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11731] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./566/cgroup.cpu" [pid 11737] <... symlink resumed>) = 0 [pid 11736] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11737] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11735] <... mprotect resumed>) = 0 [pid 5051] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11737] <... futex resumed>) = 0 [pid 11735] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... openat resumed>) = 3 [pid 11737] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11731] +++ killed by SIGIO +++ [pid 11735] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./566/binderfs", [pid 5050] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 11737] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11735] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11738 attached [pid 11737] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] unlink("./566/binderfs" [pid 5050] newfstatat(3, "", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1110, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11738] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11737] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11735] <... clone3 resumed> => {parent_tid=[1101]}, 88) = 1101 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] getdents64(3, [pid 11738] <... rseq resumed>) = 0 [pid 11737] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11735] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11738] set_robust_list(0x7f504ff7f9a0, 24 [pid 11737] <... mmap resumed>) = 0x7f504ff5f000 [pid 11735] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11738] <... set_robust_list resumed>) = 0 [pid 11737] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11735] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./566/cgroup", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11737] <... mprotect resumed>) = 0 [pid 11735] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11738] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./552/cgroup.cpu", [pid 11735] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./567/cgroup.cpu", [pid 5049] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11738] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./566/cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./552/cgroup.cpu" [pid 11738] open(".", O_RDONLY [pid 11737] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./567/cgroup.cpu" [pid 5049] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11738] <... open resumed>) = 3 [pid 11737] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11738] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 11738] <... futex resumed>) = 1 [pid 5049] <... openat resumed>) = 3 [pid 11737] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", ./strace-static-x86_64: Process 11739 attached [pid 11738] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11735] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11739] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11737] <... clone3 resumed> => {parent_tid=[1079]}, 88) = 1079 [pid 11735] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./552/binderfs", [pid 11739] <... rseq resumed>) = 0 [pid 11737] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] getdents64(3, [pid 11738] <... futex resumed>) = 0 [pid 11735] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11739] set_robust_list(0x7f504ff7f9a0, 24 [pid 11738] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11737] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11735] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./566/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./567/binderfs", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11739] <... set_robust_list resumed>) = 0 [pid 11738] <... fcntl resumed>) = 0 [pid 11737] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./552/binderfs" [pid 11739] rt_sigprocmask(SIG_SETMASK, [], [pid 11738] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11737] <... futex resumed>) = 0 [pid 5051] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./567/binderfs" [pid 11739] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11738] <... futex resumed>) = 1 [pid 11737] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11735] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11739] open(".", O_RDONLY [pid 11738] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11735] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 11739] <... open resumed>) = 3 [pid 11738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11735] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./566/cgroup.net", [pid 5050] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11739] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11738] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11735] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./554/cgroup.cpu" [pid 5047] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11739] <... futex resumed>) = 1 [pid 11737] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11738] <... openat resumed>) = 4 [pid 11739] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11737] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11737] <... futex resumed>) = 0 [pid 5049] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./552/cgroup", [pid 11739] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11737] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11739] <... fcntl resumed>) = 0 [pid 11739] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./554/binderfs", [pid 5047] unlink("./552/cgroup" [pid 11739] <... futex resumed>) = 1 [pid 11738] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11737] <... futex resumed>) = 0 [pid 11735] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./566/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./567/cgroup", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11739] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11737] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11737] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./554/binderfs" [pid 11739] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11737] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11739] <... openat resumed>) = 4 [pid 11738] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./567/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 11739] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11737] <... futex resumed>) = ? [pid 5050] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./554/cgroup", [pid 11739] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./554/cgroup" [pid 5051] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./552/cgroup.net", [pid 11735] +++ killed by SIGIO +++ [pid 5051] rmdir("./566" [pid 5050] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./554/blkio.bfq.io_wait_time_recursive" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./552/cgroup.net" [pid 5051] mkdir("./567", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1100, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11737] +++ killed by SIGIO +++ [pid 5050] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./567/cgroup.net", [pid 5049] newfstatat(AT_FDCWD, "./554/cgroup.net", [pid 5047] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] unlink("./567/cgroup.net" [pid 5049] unlink("./554/cgroup.net" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] close(3 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1078, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] umount2("./538", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] rmdir("./552" [pid 5049] getdents64(3, [pid 5047] <... rmdir resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 5045] <... openat resumed>) = 3 [pid 5050] getdents64(3, [pid 5049] <... close resumed>) = 0 [pid 5046] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5049] rmdir("./554" [pid 5046] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11740 attached [pid 5050] <... close resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] mkdir("./553", 0777 [pid 5046] <... openat resumed>) = 3 [pid 5045] getdents64(3, [pid 5050] rmdir("./567" [pid 11740] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1136 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11740] <... set_robust_list resumed>) = 0 [pid 5050] mkdir("./568", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] mkdir("./555", 0777 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] getdents64(3, [pid 11740] chdir("./567" [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 11741 attached [pid 11740] <... chdir resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11740] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11740] <... prctl resumed>) = 0 [pid 5045] umount2("./538/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./549/cgroup.cpu", [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11741] set_robust_list(0x555556ac56a0, 24 [pid 11740] setpgid(0, 0 [pid 5046] unlink("./549/cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./538/cgroup.cpu", [pid 11741] <... set_robust_list resumed>) = 0 [pid 11740] <... setpgid resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1108 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./538/cgroup.cpu" [pid 11740] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11740] <... symlink resumed>) = 0 [pid 5045] umount2("./538/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./538/binderfs", [pid 11740] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./538/binderfs"./strace-static-x86_64: Process 11742 attached [pid 11741] chdir("./553" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11743 attached [pid 11742] set_robust_list(0x555556ac56a0, 24 [pid 11740] <... symlink resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1139 [pid 5046] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11743] set_robust_list(0x555556ac56a0, 24 [pid 11742] <... set_robust_list resumed>) = 0 [pid 11741] <... chdir resumed>) = 0 [pid 11740] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1112 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./538/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11743] <... set_robust_list resumed>) = 0 [pid 11742] chdir("./555" [pid 11741] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11743] chdir("./568" [pid 11742] <... chdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11743] <... chdir resumed>) = 0 [pid 11742] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11741] <... prctl resumed>) = 0 [pid 11740] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./549/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./538/cgroup", [pid 11743] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11742] <... prctl resumed>) = 0 [pid 11741] setpgid(0, 0 [pid 11740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11743] <... prctl resumed>) = 0 [pid 11742] setpgid(0, 0 [pid 11741] <... setpgid resumed>) = 0 [pid 11743] setpgid(0, 0 [pid 11742] <... setpgid resumed>) = 0 [pid 5046] unlink("./549/binderfs" [pid 5045] unlink("./538/cgroup" [pid 11743] <... setpgid resumed>) = 0 [pid 11741] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11742] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11743] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11742] <... symlink resumed>) = 0 [pid 11740] <... openat resumed>) = 3 [pid 5045] umount2("./538/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./538/blkio.bfq.io_wait_time_recursive", [pid 11743] <... symlink resumed>) = 0 [pid 11742] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11740] write(3, "1000", 4 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11742] <... symlink resumed>) = 0 [pid 11741] <... symlink resumed>) = 0 [pid 5045] unlink("./538/blkio.bfq.io_wait_time_recursive" [pid 11743] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11741] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11740] <... write resumed>) = 4 [pid 5046] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11742] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11740] close(3 [pid 11742] <... symlink resumed>) = 0 [pid 11740] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11740] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./549/cgroup", [pid 11742] <... openat resumed>) = 3 [pid 11741] <... symlink resumed>) = 0 [pid 5045] umount2("./538/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11740] <... symlink resumed>) = 0 [pid 11742] write(3, "1000", 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./538/cgroup.net", [pid 11743] <... symlink resumed>) = 0 [pid 11742] <... write resumed>) = 4 [pid 11741] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5046] unlink("./549/cgroup" [pid 11743] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11742] close(3 [pid 11740] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11742] <... close resumed>) = 0 [pid 11740] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./538/cgroup.net" [pid 11742] symlink("/dev/binderfs", "./binderfs" [pid 11741] <... symlink resumed>) = 0 [pid 11740] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... unlink resumed>) = 0 [pid 11743] <... symlink resumed>) = 0 [pid 11742] <... symlink resumed>) = 0 [pid 11743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11740] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11742] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11742] <... futex resumed>) = 0 [pid 11740] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11742] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11741] <... openat resumed>) = 3 [pid 11740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 5045] close(3 [pid 11743] <... openat resumed>) = 3 [pid 11742] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... close resumed>) = 0 [pid 11742] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11743] write(3, "1000", 4 [pid 11740] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 11743] <... write resumed>) = 4 [pid 11741] write(3, "1000", 4 [pid 11740] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11743] close(3 [pid 11742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] rmdir("./538" [pid 11743] <... close resumed>) = 0 [pid 11742] <... mmap resumed>) = 0x7f504ff5f000 [pid 11741] <... write resumed>) = 4 [pid 11740] <... mprotect resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11743] symlink("/dev/binderfs", "./binderfs" [pid 11742] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11741] close(3 [pid 11740] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11742] <... mprotect resumed>) = 0 [pid 11743] <... symlink resumed>) = 0 [pid 11742] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11740] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./539", 0777 [pid 11741] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11741] symlink("/dev/binderfs", "./binderfs" [pid 11740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] newfstatat(AT_FDCWD, "./549/cgroup.net", ./strace-static-x86_64: Process 11744 attached [pid 11742] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11741] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11744] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11743] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11742] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11740] <... clone3 resumed> => {parent_tid=[1137]}, 88) = 1137 ./strace-static-x86_64: Process 11745 attached [pid 11743] <... futex resumed>) = 0 [pid 11741] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11740] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] unlink("./549/cgroup.net" [pid 11745] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11744] <... rseq resumed>) = 0 [pid 11743] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11742] <... clone3 resumed> => {parent_tid=[1113]}, 88) = 1113 [pid 11741] <... futex resumed>) = 0 [pid 11740] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11746 attached [pid 11745] <... rseq resumed>) = 0 [pid 11744] set_robust_list(0x7f504ff7f9a0, 24 [pid 11743] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11742] rt_sigprocmask(SIG_SETMASK, [], [pid 11741] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11740] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11745] set_robust_list(0x7f504ff7f9a0, 24 [pid 11744] <... set_robust_list resumed>) = 0 [pid 11743] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11741] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11740] <... futex resumed>) = 0 [pid 11743] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11742] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11746] set_robust_list(0x555556ac56a0, 24 [pid 11743] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11741] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11746] <... set_robust_list resumed>) = 0 [pid 11745] <... set_robust_list resumed>) = 0 [pid 11741] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11740] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11743] <... mmap resumed>) = 0x7f504ff5f000 [pid 11742] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11746] chdir("./539" [pid 11744] rt_sigprocmask(SIG_SETMASK, [], [pid 11742] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 11744] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11743] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11745] rt_sigprocmask(SIG_SETMASK, [], [pid 11744] open(".", O_RDONLY [pid 11743] <... mprotect resumed>) = 0 [pid 11741] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] close(3 [pid 11746] <... chdir resumed>) = 0 [pid 11745] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11744] <... open resumed>) = 3 [pid 11744] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11743] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11744] <... futex resumed>) = 1 [pid 11740] <... futex resumed>) = 0 [pid 11744] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11740] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11740] <... futex resumed>) = 0 [pid 11746] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11744] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11743] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11741] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11740] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... close resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1080 [pid 11746] <... prctl resumed>) = 0 [pid 11745] open(".", O_RDONLY [pid 11744] <... fcntl resumed>) = 0 [pid 11743] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11741] <... mprotect resumed>) = 0 [pid 5046] rmdir("./549" [pid 11746] setpgid(0, 0 [pid 11745] <... open resumed>) = 3 [pid 11744] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11747 attached ) = 1 [pid 11740] <... futex resumed>) = 0 [pid 11747] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11746] <... setpgid resumed>) = 0 [pid 11744] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11741] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11747] <... rseq resumed>) = 0 [pid 11744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11740] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11747] set_robust_list(0x7f504ff7f9a0, 24 [pid 11746] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11744] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11740] <... futex resumed>) = 0 [pid 11747] <... set_robust_list resumed>) = 0 [pid 11746] <... symlink resumed>) = 0 [pid 11745] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11744] <... openat resumed>) = 4 [pid 11743] <... clone3 resumed> => {parent_tid=[1140]}, 88) = 1140 [pid 11741] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11740] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... rmdir resumed>) = 0 [pid 11747] rt_sigprocmask(SIG_SETMASK, [], [pid 11746] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11745] <... futex resumed>) = 1 [pid 11743] rt_sigprocmask(SIG_SETMASK, [], [pid 11742] <... futex resumed>) = 0 [pid 11741] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11746] <... symlink resumed>) = 0 [pid 11745] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11744] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11743] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11740] <... futex resumed>) = 0 [pid 5046] mkdir("./550", 0777./strace-static-x86_64: Process 11748 attached [pid 11747] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11743] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11742] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11748] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11747] open(".", O_RDONLY [pid 11745] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11742] <... futex resumed>) = 0 [pid 11748] <... rseq resumed>) = 0 [pid 11747] <... open resumed>) = 3 [pid 11742] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11748] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11748] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11747] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11747] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5046] <... mkdir resumed>) = 0 [pid 11743] <... futex resumed>) = 1 [pid 11747] <... futex resumed>) = 0 [pid 11746] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11745] <... fcntl resumed>) = 0 [pid 11741] <... clone3 resumed> => {parent_tid=[1109]}, 88) = 1109 [pid 11743] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11747] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11746] <... symlink resumed>) = 0 [pid 11743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11741] rt_sigprocmask(SIG_SETMASK, [], [pid 11745] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11744] +++ killed by SIGIO +++ [pid 11740] +++ killed by SIGIO +++ [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11741] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11745] <... futex resumed>) = 1 [pid 11743] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11742] <... futex resumed>) = 0 [pid 11742] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11742] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11741] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11745] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11748] <... futex resumed>) = 0 [pid 11741] <... futex resumed>) = 1 [pid 11748] open(".", O_RDONLY [pid 11743] <... futex resumed>) = 1 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1136, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11743] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11747] <... futex resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 11741] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11747] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 11747] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11747] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11748] <... open resumed>) = 3 [pid 11745] <... openat resumed>) = 4 [pid 11746] <... openat resumed>) = 3 [pid 11743] <... futex resumed>) = 0 [pid 11743] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11747] <... futex resumed>) = 0 [pid 11743] <... futex resumed>) = 1 [pid 11743] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11748] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11747] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11746] write(3, "1000", 4./strace-static-x86_64: Process 11749 attached [pid 11748] <... futex resumed>) = 1 [pid 11745] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11741] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11749] set_robust_list(0x555556ac56a0, 24 [pid 11746] <... write resumed>) = 4 [pid 11742] <... futex resumed>) = ? [pid 11741] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11749] <... set_robust_list resumed>) = 0 [pid 11748] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11746] close(3 [pid 11745] +++ killed by SIGIO +++ [pid 11741] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1102 [pid 11749] chdir("./550" [pid 11741] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11749] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11749] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] getdents64(3, [pid 11749] <... prctl resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11746] <... close resumed>) = 0 [pid 11746] symlink("/dev/binderfs", "./binderfs" [pid 11749] setpgid(0, 0 [pid 11748] <... fcntl resumed>) = 0 [pid 5051] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11749] <... setpgid resumed>) = 0 [pid 11746] <... symlink resumed>) = 0 [pid 11749] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11748] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11747] <... openat resumed>) = 4 [pid 11746] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11748] <... futex resumed>) = 1 [pid 11747] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11746] <... futex resumed>) = 0 [pid 11741] <... futex resumed>) = 0 [pid 11748] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11746] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11743] <... futex resumed>) = ? [pid 11741] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11747] +++ killed by SIGIO +++ [pid 11746] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11741] <... futex resumed>) = 0 [pid 11748] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11741] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11749] <... symlink resumed>) = 0 [pid 11748] <... openat resumed>) = 4 [pid 11746] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./567/cgroup.cpu", [pid 11749] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11748] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11749] <... symlink resumed>) = 0 [pid 11746] <... mmap resumed>) = 0x7f504ff5f000 [pid 11742] +++ killed by SIGIO +++ [pid 5051] unlink("./567/cgroup.cpu" [pid 11741] <... futex resumed>) = ? [pid 11746] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 11748] +++ killed by SIGIO +++ [pid 11749] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11746] <... mprotect resumed>) = 0 [pid 5051] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1112, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11749] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11746] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./567/binderfs", [pid 11749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11746] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11741] +++ killed by SIGIO +++ [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1108, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11750 attached [pid 11743] +++ killed by SIGIO +++ [pid 11749] write(3, "1000", 4 [pid 11750] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11749] <... write resumed>) = 4 [pid 11746] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 5051] unlink("./567/binderfs" [pid 11750] <... rseq resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1139, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5047] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... restart_syscall resumed>) = 0 [pid 11750] set_robust_list(0x7f504ff7f9a0, 24 [pid 11749] close(3 [pid 11746] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11750] <... set_robust_list resumed>) = 0 [pid 11749] <... close resumed>) = 0 [pid 11746] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11750] rt_sigprocmask(SIG_SETMASK, [], [pid 11749] symlink("/dev/binderfs", "./binderfs" [pid 11746] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11750] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11749] <... symlink resumed>) = 0 [pid 11746] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... openat resumed>) = 3 [pid 11750] open(".", O_RDONLY [pid 11749] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11746] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./567/cgroup", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11750] <... open resumed>) = 3 [pid 11749] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 11750] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11749] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] unlink("./567/cgroup" [pid 5050] <... openat resumed>) = 3 [pid 5049] newfstatat(3, "", [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11750] <... futex resumed>) = 1 [pid 11749] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11746] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11750] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11749] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11746] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11749] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11746] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11750] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11749] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11746] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11750] <... fcntl resumed>) = 0 [pid 5049] getdents64(3, [pid 11750] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5047] getdents64(3, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11749] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 5050] getdents64(3, [pid 5047] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11750] <... futex resumed>) = 1 [pid 11749] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11746] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11750] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11749] <... mprotect resumed>) = 0 [pid 11746] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 11750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11749] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11746] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11750] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11749] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11746] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 5051] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./568/cgroup.cpu", [pid 5047] unlink("./553/cgroup.cpu" [pid 11750] <... openat resumed>) = 4 [pid 11749] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11746] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11750] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./555/cgroup.cpu"./strace-static-x86_64: Process 11751 attached [pid 5051] newfstatat(AT_FDCWD, "./567/cgroup.net", [pid 5050] unlink("./568/cgroup.cpu" [pid 5047] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11750] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11751] <... rseq resumed>) = 0 [pid 11749] <... clone3 resumed> => {parent_tid=[1103]}, 88) = 1103 [pid 11749] rt_sigprocmask(SIG_SETMASK, [], [pid 11751] set_robust_list(0x7f504ff7f9a0, 24 [pid 11749] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./567/cgroup.net" [pid 5050] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./553/binderfs", [pid 11751] <... set_robust_list resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11751] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./568/binderfs", [pid 5047] unlink("./553/binderfs" [pid 11751] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5049] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] open(".", O_RDONLY [pid 11749] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11749] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] close(3 [pid 5050] unlink("./568/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./555/binderfs", [pid 5047] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] <... open resumed>) = 3 [pid 5051] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11751] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./567" [pid 5050] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./553/cgroup", [pid 5049] unlink("./555/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./568/cgroup", [pid 5047] unlink("./553/cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11751] <... futex resumed>) = 1 [pid 5047] <... unlink resumed>) = 0 [pid 11751] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] unlink("./568/cgroup" [pid 5047] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11749] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", [pid 5051] mkdir("./568", 0777 [pid 11749] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 11751] <... futex resumed>) = 0 [pid 11749] <... futex resumed>) = 1 [pid 11746] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11749] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1080, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11751] <... fcntl resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./555/cgroup", [pid 11751] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11752 attached [pid 11751] <... futex resumed>) = 1 [pid 11749] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11749] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./555/cgroup" [pid 11752] set_robust_list(0x555556ac56a0, 24 [pid 11751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11749] <... futex resumed>) = 0 [pid 11749] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11751] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11752] <... set_robust_list resumed>) = 0 [pid 11751] <... openat resumed>) = 4 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1138 [pid 5050] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./539", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11751] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] newfstatat(AT_FDCWD, "./553/cgroup.net", [pid 11751] +++ killed by SIGIO +++ [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11752] chdir("./568" [pid 11749] <... futex resumed>) = ? [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11752] <... chdir resumed>) = 0 [pid 5050] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", [pid 11752] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11752] <... prctl resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./568/cgroup.net", [pid 11752] setpgid(0, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./553/cgroup.net" [pid 5045] <... openat resumed>) = 3 [pid 11752] <... setpgid resumed>) = 0 [pid 11749] +++ killed by SIGIO +++ [pid 5050] unlink("./568/cgroup.net" [pid 5049] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1102, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 11752] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5046] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11752] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./539/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11752] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] close(3 [pid 5047] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... openat resumed>) = 3 [pid 5050] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./539/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./555/cgroup.net", [pid 5047] <... close resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./539/cgroup.cpu" [pid 11752] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./539/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./539/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./539/binderfs") = 0 [pid 5045] umount2("./539/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./568" [pid 5045] newfstatat(AT_FDCWD, "./539/cgroup", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./539/cgroup") = 0 [pid 5045] umount2("./539/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./539/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./539/blkio.bfq.io_wait_time_recursive" [pid 5050] <... rmdir resumed>) = 0 [pid 5047] rmdir("./553" [pid 11752] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./539/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./539/cgroup.net", [pid 5047] <... rmdir resumed>) = 0 [pid 5049] unlink("./555/cgroup.net" [pid 5046] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./539/cgroup.net" [pid 11752] <... symlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] getdents64(3, [pid 5050] mkdir("./569", 0777 [pid 5047] mkdir("./554", 0777 [pid 5046] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./550/cgroup.cpu", [pid 5045] rmdir("./539" [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5045] mkdir("./540", 0777 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11752] <... openat resumed>) = 3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] close(3 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./550/cgroup.cpu" [pid 5045] <... mkdir resumed>) = 0 [pid 11752] write(3, "1000", 4 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11753 attached [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1082 [pid 11753] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11752] <... write resumed>) = 4 [pid 11753] chdir("./540") = 0 [pid 11753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11753] setpgid(0, 0) = 0 [pid 11753] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11752] close(3./strace-static-x86_64: Process 11755 attached ./strace-static-x86_64: Process 11754 attached [pid 11753] <... symlink resumed>) = 0 [pid 11752] <... close resumed>) = 0 [pid 5049] rmdir("./555" [pid 5046] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11754] set_robust_list(0x555556ac56a0, 24 [pid 11753] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1141 [pid 11755] set_robust_list(0x555556ac56a0, 24 [pid 11754] <... set_robust_list resumed>) = 0 [pid 11753] <... symlink resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1110 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11752] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./550/binderfs", [pid 5049] mkdir("./556", 0777 [pid 11755] <... set_robust_list resumed>) = 0 [pid 11754] chdir("./554" [pid 11753] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11755] chdir("./569" [pid 11754] <... chdir resumed>) = 0 [pid 11753] <... symlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] unlink("./550/binderfs" [pid 11754] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11752] <... symlink resumed>) = 0 [pid 11755] <... chdir resumed>) = 0 [pid 11754] <... prctl resumed>) = 0 [pid 11753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11755] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11754] setpgid(0, 0 [pid 11753] <... openat resumed>) = 3 [pid 11752] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 11752] <... futex resumed>) = 0 [pid 5046] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11755] <... prctl resumed>) = 0 [pid 11754] <... setpgid resumed>) = 0 [pid 11753] write(3, "1000", 4 [pid 11755] setpgid(0, 0 [pid 11754] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11753] <... write resumed>) = 4 [pid 11752] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11755] <... setpgid resumed>) = 0 [pid 11754] <... symlink resumed>) = 0 [pid 11753] close(3 [pid 11755] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11753] <... close resumed>) = 0 [pid 11753] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11754] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./550/cgroup", [pid 11752] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11756 attached [pid 11755] <... symlink resumed>) = 0 [pid 11754] <... symlink resumed>) = 0 [pid 11753] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11752] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./550/cgroup" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1114 [pid 11752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11755] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11754] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11756] set_robust_list(0x555556ac56a0, 24 [pid 11755] <... symlink resumed>) = 0 [pid 11754] <... symlink resumed>) = 0 [pid 11753] <... futex resumed>) = 0 [pid 11752] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 11755] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11756] <... set_robust_list resumed>) = 0 [pid 11755] <... symlink resumed>) = 0 [pid 11752] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11754] <... openat resumed>) = 3 [pid 11755] <... openat resumed>) = 3 [pid 11754] write(3, "1000", 4) = 4 [pid 11754] close(3) = 0 [pid 11754] symlink("/dev/binderfs", "./binderfs" [pid 11756] chdir("./556" [pid 11755] write(3, "1000", 4 [pid 11754] <... symlink resumed>) = 0 [pid 11753] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11752] <... mprotect resumed>) = 0 [pid 5046] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11756] <... chdir resumed>) = 0 [pid 11753] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11755] <... write resumed>) = 4 [pid 11753] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11756] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11755] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11756] <... prctl resumed>) = 0 [pid 11755] <... close resumed>) = 0 [pid 11754] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11753] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11752] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 11756] setpgid(0, 0 [pid 11755] symlink("/dev/binderfs", "./binderfs" [pid 11753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11752] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11756] <... setpgid resumed>) = 0 [pid 11755] <... symlink resumed>) = 0 [pid 11754] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11754] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11756] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11754] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 11755] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11753] <... mmap resumed>) = 0x7f504ff5f000 [pid 11752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11755] <... futex resumed>) = 0 [pid 11754] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 11755] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11754] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11755] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11754] <... mprotect resumed>) = 0 [pid 11755] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11756] <... symlink resumed>) = 0 [pid 11755] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11754] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11755] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11753] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11756] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11752] <... clone3 resumed> => {parent_tid=[1139]}, 88) = 1139 [pid 5046] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11756] <... symlink resumed>) = 0 [pid 11755] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11754] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11757 attached [pid 11754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11758 attached [pid 11757] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11756] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11755] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11753] <... mprotect resumed>) = 0 [pid 11752] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./550/cgroup.net", [pid 11758] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11757] <... rseq resumed>) = 0 [pid 11755] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11754] <... clone3 resumed> => {parent_tid=[1111]}, 88) = 1111 [pid 11758] <... rseq resumed>) = 0 [pid 11757] set_robust_list(0x7f504ff7f9a0, 24 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11759 attached [pid 11758] set_robust_list(0x7f504ff7f9a0, 24 [pid 11757] <... set_robust_list resumed>) = 0 [pid 11754] rt_sigprocmask(SIG_SETMASK, [], [pid 11753] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11752] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11759] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11758] <... set_robust_list resumed>) = 0 [pid 11757] rt_sigprocmask(SIG_SETMASK, [], [pid 11756] <... symlink resumed>) = 0 [pid 11755] <... clone3 resumed> => {parent_tid=[1142]}, 88) = 1142 [pid 11754] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./550/cgroup.net" [pid 11759] <... rseq resumed>) = 0 [pid 11758] rt_sigprocmask(SIG_SETMASK, [], [pid 11757] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11755] rt_sigprocmask(SIG_SETMASK, [], [pid 11752] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11759] set_robust_list(0x7f504ff7f9a0, 24 [pid 11758] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11757] open(".", O_RDONLY [pid 11756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11755] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11754] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11759] <... set_robust_list resumed>) = 0 [pid 11758] open(".", O_RDONLY [pid 11753] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11752] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11759] rt_sigprocmask(SIG_SETMASK, [], [pid 11758] <... open resumed>) = 3 [pid 11757] <... open resumed>) = 3 [pid 11756] <... openat resumed>) = 3 [pid 11755] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11754] <... futex resumed>) = 0 [pid 11753] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11752] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 11759] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11755] <... futex resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3./strace-static-x86_64: Process 11760 attached [pid 11759] open(".", O_RDONLY [pid 11758] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11757] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11756] write(3, "1000", 4 [pid 11755] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11754] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11760] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11759] <... open resumed>) = 3 [pid 11758] <... futex resumed>) = 0 [pid 11757] <... futex resumed>) = 0 [pid 11754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11752] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11760] <... rseq resumed>) = 0 [pid 11759] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11758] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11757] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11756] <... write resumed>) = 4 [pid 11754] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11753] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 11752] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... close resumed>) = 0 [pid 11760] set_robust_list(0x7f504ff7f9a0, 24 [pid 11759] <... futex resumed>) = 1 [pid 11758] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11756] close(3 [pid 11755] <... futex resumed>) = 0 [pid 11754] <... futex resumed>) = 0 [pid 11753] rt_sigprocmask(SIG_SETMASK, [], [pid 11752] <... futex resumed>) = 0 [pid 5046] rmdir("./550" [pid 11760] <... set_robust_list resumed>) = 0 [pid 11759] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11758] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11757] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11756] <... close resumed>) = 0 [pid 11754] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11753] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11752] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11760] rt_sigprocmask(SIG_SETMASK, [], [pid 11759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11758] <... fcntl resumed>) = 0 [pid 11757] <... fcntl resumed>) = 0 [pid 11756] symlink("/dev/binderfs", "./binderfs" [pid 11755] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11753] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11760] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11759] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11758] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11757] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11755] <... futex resumed>) = 0 [pid 11760] open(".", O_RDONLY [pid 11759] <... fcntl resumed>) = 0 [pid 11758] <... futex resumed>) = 1 [pid 11757] <... futex resumed>) = 0 [pid 11755] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11754] <... futex resumed>) = 0 [pid 11760] <... open resumed>) = 3 [pid 11759] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11758] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11757] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11755] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11754] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11759] <... futex resumed>) = 0 [pid 11758] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11759] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11755] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11754] <... futex resumed>) = 0 [pid 11759] <... openat resumed>) = 4 [pid 5046] <... rmdir resumed>) = 0 [pid 11758] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11754] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11756] <... symlink resumed>) = 0 [pid 11753] <... futex resumed>) = 0 [pid 11752] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] mkdir("./551", 0777 [pid 11760] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11758] <... openat resumed>) = 4 [pid 11756] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11752] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... mkdir resumed>) = 0 [pid 11760] <... futex resumed>) = 0 [pid 11759] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11758] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11757] <... futex resumed>) = 0 [pid 11755] <... futex resumed>) = ? [pid 11754] <... futex resumed>) = ? [pid 11753] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11760] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11757] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11753] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11752] <... futex resumed>) = 1 [pid 11756] <... futex resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11758] +++ killed by SIGIO +++ [pid 11757] <... openat resumed>) = 4 [pid 11753] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11752] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- ./strace-static-x86_64: Process 11761 attached [pid 11760] <... futex resumed>) = 0 [pid 11759] +++ killed by SIGIO +++ [pid 11756] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11753] <... futex resumed>) = 1 [pid 11761] set_robust_list(0x555556ac56a0, 24 [pid 11756] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11753] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11761] <... set_robust_list resumed>) = 0 [pid 11756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1104 [pid 11754] +++ killed by SIGIO +++ [pid 11761] chdir("./551" [pid 11760] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11761] <... chdir resumed>) = 0 [pid 11756] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1110, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11761] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11761] <... prctl resumed>) = 0 [pid 11756] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11761] setpgid(0, 0 [pid 11756] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11761] <... setpgid resumed>) = 0 [pid 11756] <... mprotect resumed>) = 0 [pid 11760] <... fcntl resumed>) = 0 [pid 11755] +++ killed by SIGIO +++ [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1141, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11757] +++ killed by SIGIO +++ [pid 11760] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11756] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11752] +++ killed by SIGIO +++ [pid 5047] <... openat resumed>) = 3 [pid 11760] <... futex resumed>) = 1 [pid 11753] <... futex resumed>) = 0 [pid 11761] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11760] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11756] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11753] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1138, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] newfstatat(3, "", [pid 11760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11753] <... futex resumed>) = 0 [pid 11761] <... symlink resumed>) = 0 [pid 11760] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11753] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11761] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5050] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11756] <... clone3 resumed> => {parent_tid=[1115]}, 88) = 1115 [pid 5051] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 11760] <... openat resumed>) = 4 [pid 11756] rt_sigprocmask(SIG_SETMASK, [], [pid 11753] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11761] <... symlink resumed>) = 0 [pid 11756] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... openat resumed>) = 3 [pid 11756] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 5047] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11756] <... futex resumed>) = 0 [pid 11756] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(3, "", [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./554/cgroup.cpu" [pid 11753] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11762 attached [pid 11761] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 11762] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./568/cgroup.cpu", [pid 11762] <... rseq resumed>) = 0 [pid 11761] <... symlink resumed>) = 0 [pid 11760] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11762] set_robust_list(0x7f504ff7f9a0, 24 [pid 11761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./568/cgroup.cpu" [pid 5050] unlink("./569/cgroup.cpu" [pid 11762] <... set_robust_list resumed>) = 0 [pid 11761] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 11753] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11762] rt_sigprocmask(SIG_SETMASK, [], [pid 11761] write(3, "1000", 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11762] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11761] <... write resumed>) = 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./554/binderfs", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1082, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11762] open(".", O_RDONLY [pid 11761] close(3 [pid 5050] newfstatat(AT_FDCWD, "./569/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11762] <... open resumed>) = 3 [pid 11761] <... close resumed>) = 0 [pid 5051] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11762] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11761] symlink("/dev/binderfs", "./binderfs" [pid 5050] unlink("./569/binderfs" [pid 5047] unlink("./554/binderfs" [pid 11762] <... futex resumed>) = 1 [pid 11761] <... symlink resumed>) = 0 [pid 11756] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 11762] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11761] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11756] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./568/binderfs", [pid 5050] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11762] <... fcntl resumed>) = 0 [pid 11761] <... futex resumed>) = 0 [pid 11756] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./540", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11762] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11761] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./569/cgroup", [pid 5047] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11762] <... futex resumed>) = 0 [pid 11761] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11756] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./568/binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11762] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11761] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] unlink("./569/cgroup" [pid 5047] newfstatat(AT_FDCWD, "./554/cgroup", [pid 5045] openat(AT_FDCWD, "./540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11761] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11756] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11762] <... futex resumed>) = 0 [pid 11756] <... futex resumed>) = 1 [pid 5051] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11762] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11756] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11761] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(AT_FDCWD, "./568/cgroup", [pid 5050] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11761] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./554/cgroup" [pid 5045] newfstatat(3, "", [pid 11761] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11761] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11761] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./568/cgroup" [pid 11761] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11762] <... openat resumed>) = 4 [pid 11761] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11762] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11756] <... futex resumed>) = ? ./strace-static-x86_64: Process 11763 attached [pid 11762] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./540/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11763] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11761] <... clone3 resumed> => {parent_tid=[1105]}, 88) = 1105 [pid 5051] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11763] <... rseq resumed>) = 0 [pid 11761] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 5047] unlink("./554/blkio.bfq.io_wait_time_recursive" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11763] set_robust_list(0x7f504ff7f9a0, 24 [pid 11761] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./540/cgroup.cpu", [pid 11763] <... set_robust_list resumed>) = 0 [pid 11761] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11763] rt_sigprocmask(SIG_SETMASK, [], [pid 11761] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./569/cgroup.net" [pid 5047] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11763] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11761] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./568/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11763] open(".", O_RDONLY [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./554/cgroup.net", [pid 5045] unlink("./540/cgroup.cpu" [pid 11763] <... open resumed>) = 3 [pid 5051] unlink("./568/cgroup.net" [pid 5050] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11763] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 11763] <... futex resumed>) = 1 [pid 11761] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5047] unlink("./554/cgroup.net" [pid 5045] umount2("./540/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11763] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11761] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11756] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5050] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11761] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] rmdir("./569" [pid 11763] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11761] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./568" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1114, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11763] <... fcntl resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./540/binderfs", [pid 11763] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... restart_syscall resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] mkdir("./569", 0777 [pid 5050] mkdir("./570", 0777 [pid 11763] <... futex resumed>) = 1 [pid 11761] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./540/binderfs" [pid 11763] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11761] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11761] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11763] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11761] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... close resumed>) = 0 [pid 5045] umount2("./540/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11761] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./554" [pid 11763] <... openat resumed>) = 4 [pid 11761] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11765 attached [pid 5049] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5049] newfstatat(3, "", [pid 5047] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11765] set_robust_list(0x555556ac56a0, 24 [pid 5049] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./540/cgroup", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11765] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1140 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11764 attached [pid 11765] chdir("./569" [pid 5045] unlink("./540/cgroup" [pid 11765] <... chdir resumed>) = 0 [pid 5049] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11765] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 5047] mkdir("./555", 0777 [pid 5045] <... unlink resumed>) = 0 [pid 11765] <... prctl resumed>) = 0 [pid 11764] set_robust_list(0x555556ac56a0, 24 [pid 11765] setpgid(0, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11765] <... setpgid resumed>) = 0 [pid 5049] unlink("./556/cgroup.cpu" [pid 5047] <... mkdir resumed>) = 0 [pid 11765] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11764] <... set_robust_list resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1143 [pid 5049] <... unlink resumed>) = 0 [pid 5045] umount2("./540/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11765] <... symlink resumed>) = 0 [pid 11764] chdir("./570" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11764] <... chdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./540/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11765] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11764] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./556/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./556/binderfs" [pid 11765] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11765] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11765] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./556/cgroup", [pid 5045] unlink("./540/blkio.bfq.io_wait_time_recursive" [pid 11764] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 11766 attached [pid 11764] setpgid(0, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11766] set_robust_list(0x555556ac56a0, 24 [pid 11765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11764] <... setpgid resumed>) = 0 [pid 11763] +++ killed by SIGIO +++ [pid 11761] +++ killed by SIGIO +++ [pid 5049] unlink("./556/cgroup" [pid 11766] <... set_robust_list resumed>) = 0 [pid 11765] <... openat resumed>) = 3 [pid 11764] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1112 [pid 5045] <... unlink resumed>) = 0 [pid 11766] chdir("./555" [pid 11765] write(3, "1000", 4 [pid 5045] umount2("./540/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1104, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11766] <... chdir resumed>) = 0 [pid 11765] <... write resumed>) = 4 [pid 5049] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11766] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11765] close(3 [pid 11764] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./540/cgroup.net", [pid 11766] <... prctl resumed>) = 0 [pid 11765] <... close resumed>) = 0 [pid 11764] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./540/cgroup.net" [pid 11766] setpgid(0, 0 [pid 11765] symlink("/dev/binderfs", "./binderfs" [pid 5049] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 11766] <... setpgid resumed>) = 0 [pid 11765] <... symlink resumed>) = 0 [pid 11764] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 11766] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11765] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11766] <... symlink resumed>) = 0 [pid 11764] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 11765] <... futex resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] getdents64(3, [pid 11766] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11764] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3 [pid 11765] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] <... close resumed>) = 0 [pid 11765] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11765] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11766] <... symlink resumed>) = 0 [pid 11765] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11764] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./540" [pid 11766] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11764] write(3, "1000", 4 [pid 5049] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 5046] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 11765] <... mmap resumed>) = 0x7f504ff5f000 [pid 11764] <... write resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 11764] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./541", 0777 [pid 11764] <... close resumed>) = 0 [pid 5046] unlink("./551/cgroup.cpu" [pid 11766] <... symlink resumed>) = 0 [pid 11765] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11764] symlink("/dev/binderfs", "./binderfs" [pid 5049] unlink("./556/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./551/binderfs", [pid 11766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11764] <... symlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11766] write(3, "1000", 4 [pid 11765] <... mprotect resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11766] <... write resumed>) = 4 [pid 11765] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] unlink("./551/binderfs" [pid 11766] close(3 [pid 5046] <... unlink resumed>) = 0 [pid 11766] <... close resumed>) = 0 [pid 11765] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11766] symlink("/dev/binderfs", "./binderfs" [pid 11765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11766] <... symlink resumed>) = 0 [pid 5046] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11768 attached [pid 11764] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 11764] <... futex resumed>) = 0 [pid 11768] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11766] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11765] <... clone3 resumed> => {parent_tid=[1141]}, 88) = 1141 [pid 11764] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] newfstatat(AT_FDCWD, "./551/cgroup", [pid 11768] <... rseq resumed>) = 0 [pid 11766] <... futex resumed>) = 0 [pid 11765] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11768] set_robust_list(0x7f504ff7f9a0, 24 [pid 11766] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11765] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11764] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] rmdir("./556" [pid 11768] <... set_robust_list resumed>) = 0 [pid 11766] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11765] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] unlink("./551/cgroup" [pid 11768] rt_sigprocmask(SIG_SETMASK, [], [pid 11766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11765] <... futex resumed>) = 0 [pid 11764] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11768] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11766] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11765] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11768] open(".", O_RDONLY [pid 11766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 11767 attached [pid 11768] <... open resumed>) = 3 [pid 11764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] mkdir("./557", 0777 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1084 [pid 11768] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11766] <... mmap resumed>) = 0x7f504ff5f000 [pid 11764] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11768] <... futex resumed>) = 1 [pid 11766] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11765] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11768] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11767] set_robust_list(0x555556ac56a0, 24 [pid 11766] <... mprotect resumed>) = 0 [pid 11765] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11764] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", [pid 11768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11767] <... set_robust_list resumed>) = 0 [pid 11766] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11765] <... futex resumed>) = 0 [pid 11764] <... mprotect resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11768] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11767] chdir("./541" [pid 11766] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11765] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11764] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] unlink("./551/blkio.bfq.io_wait_time_recursive" [pid 11768] <... fcntl resumed>) = 0 [pid 11766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11764] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11768] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11769 attached ) = 1 [pid 11766] <... clone3 resumed> => {parent_tid=[1113]}, 88) = 1113 [pid 11765] <... futex resumed>) = 0 [pid 11769] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11768] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11766] rt_sigprocmask(SIG_SETMASK, [], [pid 11765] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11770 attached [pid 11769] <... rseq resumed>) = 0 [pid 11768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11767] <... chdir resumed>) = 0 [pid 11766] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11765] <... futex resumed>) = 0 [pid 11764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11770] set_robust_list(0x555556ac56a0, 24 [pid 11769] set_robust_list(0x7f504ff7f9a0, 24 [pid 11768] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11767] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11766] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11765] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11771 attached [pid 11770] <... set_robust_list resumed>) = 0 [pid 11769] <... set_robust_list resumed>) = 0 [pid 11768] <... openat resumed>) = 4 [pid 11767] <... prctl resumed>) = 0 [pid 11766] <... futex resumed>) = 0 [pid 11765] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1116 [pid 5046] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 11771] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11770] chdir("./557" [pid 11769] rt_sigprocmask(SIG_SETMASK, [], [pid 11768] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11767] setpgid(0, 0 [pid 11766] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11764] <... clone3 resumed> => {parent_tid=[1144]}, 88) = 1144 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11769] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11767] <... setpgid resumed>) = 0 [pid 5046] unlink("./551/cgroup.net" [pid 11771] <... rseq resumed>) = 0 [pid 11770] <... chdir resumed>) = 0 [pid 11769] open(".", O_RDONLY [pid 11764] rt_sigprocmask(SIG_SETMASK, [], [pid 11767] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11771] set_robust_list(0x7f504ff7f9a0, 24 [pid 11770] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11769] <... open resumed>) = 3 [pid 11768] +++ killed by SIGIO +++ [pid 11767] <... symlink resumed>) = 0 [pid 11764] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11771] <... set_robust_list resumed>) = 0 [pid 11770] <... prctl resumed>) = 0 [pid 11769] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11764] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11771] rt_sigprocmask(SIG_SETMASK, [], [pid 11770] setpgid(0, 0 [pid 11769] <... futex resumed>) = 1 [pid 11767] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11766] <... futex resumed>) = 0 [pid 11765] +++ killed by SIGIO +++ [pid 5046] getdents64(3, [pid 11769] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11766] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11766] <... futex resumed>) = 0 [pid 5046] close(3 [pid 11769] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11766] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... close resumed>) = 0 [pid 11769] <... fcntl resumed>) = 0 [pid 5046] rmdir("./551" [pid 11769] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... rmdir resumed>) = 0 [pid 11769] <... futex resumed>) = 1 [pid 11766] <... futex resumed>) = 0 [pid 11769] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11766] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11766] <... futex resumed>) = 0 [pid 11769] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11766] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11769] <... openat resumed>) = 4 [pid 5046] mkdir("./552", 0777) = 0 [pid 11769] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11766] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11764] <... futex resumed>) = 0 [pid 11771] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11770] <... setpgid resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11767] <... symlink resumed>) = 0 [pid 11771] open(".", O_RDONLY [pid 11770] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11767] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11764] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1106 [pid 11767] <... symlink resumed>) = 0 [pid 11767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1140, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11771] <... open resumed>) = 3 [pid 11767] <... openat resumed>) = 3 [pid 11767] write(3, "1000", 4 [pid 11771] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11767] <... write resumed>) = 4 [pid 5051] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11770] <... symlink resumed>) = 0 [pid 11767] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11767] <... close resumed>) = 0 ./strace-static-x86_64: Process 11772 attached [pid 11771] <... futex resumed>) = 1 [pid 11770] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11767] symlink("/dev/binderfs", "./binderfs" [pid 11764] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11772] set_robust_list(0x555556ac56a0, 24 [pid 11770] <... symlink resumed>) = 0 [pid 11769] +++ killed by SIGIO +++ [pid 11766] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 11772] <... set_robust_list resumed>) = 0 [pid 11771] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11770] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11767] <... symlink resumed>) = 0 [pid 11764] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11772] chdir("./552") = 0 [pid 5051] getdents64(3, [pid 11772] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1112, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11772] <... prctl resumed>) = 0 [pid 11770] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11772] setpgid(0, 0 [pid 11770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11767] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11771] <... fcntl resumed>) = 0 [pid 11764] <... futex resumed>) = 0 [pid 5051] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11772] <... setpgid resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11772] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11771] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11770] <... openat resumed>) = 3 [pid 11767] <... futex resumed>) = 0 [pid 11764] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 5047] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11771] <... futex resumed>) = 0 [pid 11770] write(3, "1000", 4 [pid 11767] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11772] <... symlink resumed>) = 0 [pid 11771] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11770] <... write resumed>) = 4 [pid 11767] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11764] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./569/cgroup.cpu" [pid 11772] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11771] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11770] close(3 [pid 11767] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11764] <... futex resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 11771] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11770] <... close resumed>) = 0 [pid 11767] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11764] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 11772] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11772] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11771] <... openat resumed>) = 4 [pid 11767] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] getdents64(3, [pid 5051] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11772] <... symlink resumed>) = 0 [pid 11771] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11770] symlink("/dev/binderfs", "./binderfs" [pid 11767] <... mmap resumed>) = 0x7f504ff5f000 [pid 11764] <... futex resumed>) = 139982915629056 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11767] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(AT_FDCWD, "./569/binderfs", [pid 5047] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11767] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11770] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 11767] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./569/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11771] +++ killed by SIGIO +++ [pid 11772] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] unlink("./555/cgroup.cpu") = 0 [pid 11772] write(3, "1000", 4 [pid 11770] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11767] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11772] <... write resumed>) = 4 [pid 11770] <... futex resumed>) = 0 [pid 11767] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11773 attached [pid 11772] close(3 [pid 11770] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(AT_FDCWD, "./569/cgroup", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11773] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11772] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./555/binderfs", [pid 11773] <... rseq resumed>) = 0 [pid 11772] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11773] set_robust_list(0x7f504ff7f9a0, 24 [pid 11772] <... symlink resumed>) = 0 [pid 5047] unlink("./555/binderfs" [pid 11773] <... set_robust_list resumed>) = 0 [pid 11770] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11767] <... clone3 resumed> => {parent_tid=[1085]}, 88) = 1085 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11773] rt_sigprocmask(SIG_SETMASK, [], [pid 11772] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11767] rt_sigprocmask(SIG_SETMASK, [], [pid 11773] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11772] <... futex resumed>) = 0 [pid 11767] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11773] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11772] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11767] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11773] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11772] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11770] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11767] <... futex resumed>) = 0 [pid 5051] unlink("./569/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11773] open(".", O_RDONLY [pid 11772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11770] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11767] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11773] <... open resumed>) = 3 [pid 11772] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./555/cgroup", [pid 11773] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11770] <... mmap resumed>) = 0x7f504ff5f000 [pid 11764] +++ killed by SIGIO +++ [pid 5051] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11773] <... futex resumed>) = 1 [pid 11772] <... mmap resumed>) = 0x7f504ff5f000 [pid 11770] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11767] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./555/cgroup" [pid 11773] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11772] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11770] <... mprotect resumed>) = 0 [pid 11767] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", [pid 11773] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11772] <... mprotect resumed>) = 0 [pid 11767] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11773] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11772] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11767] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11773] <... fcntl resumed>) = 0 [pid 11770] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11773] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11772] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11770] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1143, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11773] <... futex resumed>) = 1 [pid 11772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11770] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11767] <... futex resumed>) = 0 [pid 5051] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11775 attached ./strace-static-x86_64: Process 11774 attached [pid 11773] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11767] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11775] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11770] <... clone3 resumed> => {parent_tid=[1117]}, 88) = 1117 [pid 5050] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11775] <... rseq resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11774] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11773] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11772] <... clone3 resumed> => {parent_tid=[1107]}, 88) = 1107 [pid 11767] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11775] set_robust_list(0x7f504ff7f9a0, 24 [pid 11774] <... rseq resumed>) = 0 [pid 11773] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11772] rt_sigprocmask(SIG_SETMASK, [], [pid 11770] rt_sigprocmask(SIG_SETMASK, [], [pid 11767] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5047] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 11775] <... set_robust_list resumed>) = 0 [pid 11774] set_robust_list(0x7f504ff7f9a0, 24 [pid 11773] <... openat resumed>) = 4 [pid 11772] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11770] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11767] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11775] rt_sigprocmask(SIG_SETMASK, [], [pid 11774] <... set_robust_list resumed>) = 0 [pid 11773] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11772] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11770] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11767] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 5050] getdents64(3, [pid 5047] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11775] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11774] rt_sigprocmask(SIG_SETMASK, [], [pid 11772] <... futex resumed>) = 0 [pid 11770] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11775] open(".", O_RDONLY [pid 11774] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11772] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./555/cgroup.net", [pid 11775] <... open resumed>) = 3 [pid 11774] open(".", O_RDONLY [pid 11770] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./569/cgroup.net" [pid 5050] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11775] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11774] <... open resumed>) = 3 [pid 11773] +++ killed by SIGIO +++ [pid 11770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11767] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 11775] <... futex resumed>) = 0 [pid 11774] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11770] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./555/cgroup.net" [pid 11775] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11774] <... futex resumed>) = 1 [pid 11772] <... futex resumed>) = 0 [pid 11770] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 11775] <... fcntl resumed>) = 0 [pid 11774] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11772] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11770] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1084, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11775] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11774] <... fcntl resumed>) = 0 [pid 11772] <... futex resumed>) = 0 [pid 11770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... close resumed>) = 0 [pid 5050] unlink("./570/cgroup.cpu" [pid 11775] <... futex resumed>) = 0 [pid 11774] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11772] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11774] <... futex resumed>) = 0 [pid 11772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11775] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11770] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./569" [pid 5045] <... restart_syscall resumed>) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./555" [pid 11775] <... openat resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5047] mkdir("./556", 0777 [pid 11774] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11772] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... rmdir resumed>) = 0 [pid 5050] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11774] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11772] <... futex resumed>) = 0 [pid 5045] umount2("./541", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11776 attached [pid 11774] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11772] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11770] <... futex resumed>) = 0 [pid 11775] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] mkdir("./570", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11776] set_robust_list(0x555556ac56a0, 24 [pid 5050] newfstatat(AT_FDCWD, "./570/binderfs", [pid 5045] openat(AT_FDCWD, "./541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11776] <... set_robust_list resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1114 [pid 11774] <... openat resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11776] chdir("./556" [pid 11775] +++ killed by SIGIO +++ [pid 5050] unlink("./570/binderfs" [pid 5045] newfstatat(3, "", [pid 11776] <... chdir resumed>) = 0 [pid 11776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11776] setpgid(0, 0) = 0 [pid 11776] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 11776] <... symlink resumed>) = 0 [pid 11774] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11772] <... futex resumed>) = ? [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11776] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11776] <... symlink resumed>) = 0 [pid 11776] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./570/cgroup", [pid 11776] <... symlink resumed>) = 0 [pid 5045] umount2("./541/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./570/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./541/cgroup.cpu", [pid 11776] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 11776] write(3, "1000", 4 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11776] <... write resumed>) = 4 [pid 11776] close(3 [pid 5045] unlink("./541/cgroup.cpu" [pid 11776] <... close resumed>) = 0 [pid 11776] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11776] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11776] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11770] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./541/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11776] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", [pid 11776] <... mprotect resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1116, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] newfstatat(AT_FDCWD, "./541/binderfs", ./strace-static-x86_64: Process 11777 attached [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11777] set_robust_list(0x555556ac56a0, 24 [pid 11776] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1142 [pid 5050] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 5049] <... restart_syscall resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./541/binderfs" [pid 11777] <... set_robust_list resumed>) = 0 [pid 11776] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11774] +++ killed by SIGIO +++ [pid 11772] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11778 attached [pid 11777] chdir("./570" [pid 5050] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./541/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11778] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11777] <... chdir resumed>) = 0 [pid 11776] <... clone3 resumed> => {parent_tid=[1115]}, 88) = 1115 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1106, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11778] <... rseq resumed>) = 0 [pid 11777] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11776] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./570/cgroup.net", [pid 5049] <... openat resumed>) = 3 [pid 5046] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./541/cgroup", [pid 11778] set_robust_list(0x7f504ff7f9a0, 24 [pid 11777] <... prctl resumed>) = 0 [pid 11776] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11778] <... set_robust_list resumed>) = 0 [pid 11776] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./570/cgroup.net" [pid 5046] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11778] rt_sigprocmask(SIG_SETMASK, [], [pid 11776] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11778] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11777] setpgid(0, 0 [pid 11776] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 5049] newfstatat(3, "", [pid 11778] open(".", O_RDONLY [pid 11777] <... setpgid resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11778] <... open resumed>) = 3 [pid 5045] unlink("./541/cgroup" [pid 11778] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11777] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11778] <... futex resumed>) = 1 [pid 11776] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11778] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11777] <... symlink resumed>) = 0 [pid 11776] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./570" [pid 11778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11777] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11776] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./541/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11778] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11776] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 5049] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11778] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] newfstatat(AT_FDCWD, "./541/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11777] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11778] <... futex resumed>) = 0 [pid 11776] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./552/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11778] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11777] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11776] <... futex resumed>) = 0 [pid 5050] mkdir("./571", 0777 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./541/blkio.bfq.io_wait_time_recursive" [pid 11778] <... openat resumed>) = 4 [pid 11777] <... symlink resumed>) = 0 [pid 11776] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] unlink("./557/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5046] unlink("./552/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./552/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] unlink("./552/binderfs") = 0 [pid 5046] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11777] <... openat resumed>) = 3 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./541/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11777] write(3, "1000", 4 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11777] <... write resumed>) = 4 [pid 5049] newfstatat(AT_FDCWD, "./557/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11777] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./552/cgroup", [pid 11777] <... close resumed>) = 0 [pid 5049] unlink("./557/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./541/cgroup.net", [pid 5046] unlink("./552/cgroup") = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./541/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 11777] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 11777] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./552/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./552/cgroup.net") = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 ./strace-static-x86_64: Process 11779 attached [pid 5046] rmdir("./552" [pid 11777] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... rmdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11777] <... futex resumed>) = 0 [pid 11779] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11778] +++ killed by SIGIO +++ [pid 11776] +++ killed by SIGIO +++ [pid 11777] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11777] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./557/cgroup", [pid 5045] close(3 [pid 11777] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1114, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11779] chdir("./571" [pid 11777] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] mkdir("./553", 0777 [pid 5045] <... close resumed>) = 0 [pid 11779] <... chdir resumed>) = 0 [pid 11777] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11779] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./541" [pid 11777] <... mmap resumed>) = 0x7f504ff5f000 [pid 11779] <... prctl resumed>) = 0 [pid 11779] setpgid(0, 0) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11779] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11777] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1145 [pid 5049] unlink("./557/cgroup" [pid 5047] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11780 attached [pid 11779] <... symlink resumed>) = 0 [pid 11777] <... mprotect resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11780] set_robust_list(0x555556ac56a0, 24 [pid 11779] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11777] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11780] <... set_robust_list resumed>) = 0 [pid 11779] <... symlink resumed>) = 0 [pid 11777] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1108 [pid 5045] mkdir("./542", 0777 [pid 11780] chdir("./553" [pid 11779] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11777] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(3, "", [pid 11780] <... chdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11781 attached [pid 11780] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] <... mkdir resumed>) = 0 [pid 11781] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11780] <... prctl resumed>) = 0 [pid 11779] <... symlink resumed>) = 0 [pid 11777] <... clone3 resumed> => {parent_tid=[1143]}, 88) = 1143 [pid 11781] <... rseq resumed>) = 0 [pid 11780] setpgid(0, 0 [pid 11779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] unlink("./557/blkio.bfq.io_wait_time_recursive" [pid 11777] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11780] <... setpgid resumed>) = 0 [pid 11781] set_robust_list(0x7f504ff7f9a0, 24 [pid 11780] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11777] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11780] <... symlink resumed>) = 0 [pid 11780] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 11780] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 11780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11781] <... set_robust_list resumed>) = 0 [pid 11780] <... openat resumed>) = 3 [pid 11779] <... openat resumed>) = 3 [pid 11777] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11781] rt_sigprocmask(SIG_SETMASK, [], [pid 11779] write(3, "1000", 4 [pid 11777] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11782 attached [pid 11780] write(3, "1000", 4) = 4 [pid 11782] set_robust_list(0x555556ac56a0, 24 [pid 11780] close(3) = 0 [pid 11780] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11777] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 11782] <... set_robust_list resumed>) = 0 [pid 11781] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11782] chdir("./542" [pid 11779] <... write resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11781] open(".", O_RDONLY [pid 11779] close(3 [pid 5049] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 5047] unlink("./556/cgroup.cpu" [pid 11782] <... chdir resumed>) = 0 [pid 11780] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11782] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11780] <... futex resumed>) = 0 [pid 11782] <... prctl resumed>) = 0 [pid 11780] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11779] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5049] unlink("./557/cgroup.net" [pid 11782] setpgid(0, 0 [pid 11781] <... open resumed>) = 3 [pid 11780] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11782] <... setpgid resumed>) = 0 [pid 11780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11782] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11780] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11779] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] newfstatat(AT_FDCWD, "./556/binderfs", [pid 11781] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11782] <... symlink resumed>) = 0 [pid 11780] <... mmap resumed>) = 0x7f504ff5f000 [pid 11779] <... symlink resumed>) = 0 [pid 11780] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11781] <... futex resumed>) = 1 [pid 11777] <... futex resumed>) = 0 [pid 11782] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11780] <... mprotect resumed>) = 0 [pid 11782] <... symlink resumed>) = 0 [pid 11781] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11780] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11779] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11777] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5047] unlink("./556/binderfs" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1086 [pid 11782] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11781] <... fcntl resumed>) = 0 [pid 11779] <... futex resumed>) = 0 [pid 11777] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11780] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11779] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11777] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 11781] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] close(3./strace-static-x86_64: Process 11783 attached [pid 11783] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11780] <... clone3 resumed> => {parent_tid=[1109]}, 88) = 1109 [pid 11783] set_robust_list(0x7f504ff7f9a0, 24 [pid 11781] <... futex resumed>) = 0 [pid 11780] rt_sigprocmask(SIG_SETMASK, [], [pid 11777] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11779] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11783] <... set_robust_list resumed>) = 0 [pid 11781] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11779] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11777] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./557" [pid 11783] rt_sigprocmask(SIG_SETMASK, [], [pid 11781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11780] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11777] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11783] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11781] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11780] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11777] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./556/cgroup", [pid 11783] open(".", O_RDONLY) = 3 [pid 11780] <... futex resumed>) = 0 [pid 11783] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11780] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11779] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11779] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11783] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11780] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11780] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11779] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11783] <... futex resumed>) = 0 [pid 11780] <... futex resumed>) = 1 [pid 11783] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11780] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11779] <... mprotect resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11783] <... fcntl resumed>) = 0 [pid 11783] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11780] <... futex resumed>) = 0 [pid 11780] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11780] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11783] <... futex resumed>) = 1 [pid 11782] <... symlink resumed>) = 0 [pid 11781] <... openat resumed>) = 4 [pid 11779] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11777] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11783] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] unlink("./556/cgroup" [pid 11783] <... openat resumed>) = 4 [pid 11781] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11779] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11777] restart_syscall(<... resuming interrupted futex ...> [pid 5049] mkdir("./558", 0777 [pid 11783] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11779] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11777] <... restart_syscall resumed>) = ? [pid 11781] +++ killed by SIGIO +++ [pid 11780] <... futex resumed>) = ? [pid 11783] +++ killed by SIGIO +++ [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11784 attached [pid 11784] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11784] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11784] rt_sigprocmask(SIG_SETMASK, [], [pid 11779] <... clone3 resumed> => {parent_tid=[1146]}, 88) = 1146 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11784] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11782] <... openat resumed>) = 3 [pid 11779] rt_sigprocmask(SIG_SETMASK, [], [pid 11777] +++ killed by SIGIO +++ [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11784] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11782] write(3, "1000", 4 [pid 11780] +++ killed by SIGIO +++ [pid 11779] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1142, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11782] <... write resumed>) = 4 [pid 11779] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 11784] <... futex resumed>) = 0 [pid 11782] close(3 [pid 11779] <... futex resumed>) = 1 [pid 11784] open(".", O_RDONLY [pid 11779] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11782] <... close resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1108, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11785 attached [pid 11784] <... open resumed>) = 3 [pid 11782] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11784] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11785] set_robust_list(0x555556ac56a0, 24 [pid 11782] <... symlink resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11785] <... set_robust_list resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1118 [pid 5047] <... unlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11782] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 5046] <... openat resumed>) = 3 [pid 11785] chdir("./558" [pid 11784] <... futex resumed>) = 1 [pid 11782] <... futex resumed>) = 0 [pid 11779] <... futex resumed>) = 0 [pid 5047] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 11785] <... chdir resumed>) = 0 [pid 11784] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11782] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11779] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11785] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11784] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11782] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11779] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 5046] getdents64(3, [pid 11785] <... prctl resumed>) = 0 [pid 11784] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11779] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] setpgid(0, 0 [pid 11784] <... fcntl resumed>) = 0 [pid 11785] <... setpgid resumed>) = 0 [pid 11784] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./556/cgroup.net" [pid 11785] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11784] <... futex resumed>) = 1 [pid 11782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11779] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11784] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11782] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11779] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11784] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11779] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] getdents64(3, [pid 11784] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11782] <... mmap resumed>) = 0x7f504ff5f000 [pid 11779] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11785] <... symlink resumed>) = 0 [pid 11784] <... openat resumed>) = 4 [pid 11782] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 11785] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5047] close(3) = 0 [pid 11785] <... symlink resumed>) = 0 [pid 11784] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11779] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] rmdir("./556" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11782] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... rmdir resumed>) = 0 [pid 5046] unlink("./553/cgroup.cpu" [pid 11785] <... symlink resumed>) = 0 [pid 11782] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 5047] mkdir("./557", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 11785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] <... openat resumed>) = 3 [pid 5047] <... mkdir resumed>) = 0 [pid 5051] unlink("./570/cgroup.cpu" [pid 5046] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11782] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11786 attached [pid 11784] +++ killed by SIGIO +++ [pid 11785] write(3, "1000", 4 [pid 11779] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./553/binderfs", [pid 11786] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11785] <... write resumed>) = 4 [pid 5051] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11786] <... rseq resumed>) = 0 [pid 11786] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11786] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1145, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] unlink("./553/binderfs" [pid 11785] <... close resumed>) = 0 [pid 11782] <... clone3 resumed> => {parent_tid=[1087]}, 88) = 1087 [pid 5051] newfstatat(AT_FDCWD, "./570/binderfs", [pid 5050] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1116 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11787 attached [pid 11785] symlink("/dev/binderfs", "./binderfs" [pid 11782] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 11787] set_robust_list(0x555556ac56a0, 24 [pid 11785] <... symlink resumed>) = 0 [pid 11782] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... openat resumed>) = 3 [pid 11787] <... set_robust_list resumed>) = 0 [pid 11787] chdir("./557" [pid 11785] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11782] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./570/binderfs" [pid 5050] newfstatat(3, "", [pid 5046] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11787] <... chdir resumed>) = 0 [pid 11787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11787] setpgid(0, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] newfstatat(AT_FDCWD, "./553/cgroup", [pid 11787] <... setpgid resumed>) = 0 [pid 11786] <... futex resumed>) = 0 [pid 11782] <... futex resumed>) = 1 [pid 5050] getdents64(3, [pid 11787] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11786] open(".", O_RDONLY [pid 5051] <... unlink resumed>) = 0 [pid 11782] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./553/cgroup" [pid 5050] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11787] <... symlink resumed>) = 0 [pid 11786] <... open resumed>) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11786] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11785] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11786] <... futex resumed>) = 1 [pid 11785] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11782] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./570/cgroup", [pid 5050] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 5046] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11787] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11786] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11782] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11787] <... symlink resumed>) = 0 [pid 11786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11785] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11782] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11786] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11782] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./570/cgroup" [pid 11786] <... fcntl resumed>) = 0 [pid 11786] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11782] <... futex resumed>) = 0 [pid 11786] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11782] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11786] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11782] <... futex resumed>) = 0 [pid 11782] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... unlink resumed>) = 0 [pid 11785] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", [pid 11787] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] unlink("./571/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11785] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 11787] <... symlink resumed>) = 0 [pid 11785] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 11787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11786] +++ killed by SIGIO +++ [pid 11785] <... mprotect resumed>) = 0 [pid 11782] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11787] <... openat resumed>) = 3 [pid 11785] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", [pid 5050] newfstatat(AT_FDCWD, "./571/binderfs", [pid 11785] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1086, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11787] write(3, "1000", 4 [pid 11785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 5050] unlink("./571/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 11788 attached [pid 11787] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11788] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11787] close(3 [pid 11785] <... clone3 resumed> => {parent_tid=[1119]}, 88) = 1119 [pid 5051] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./553/cgroup.net", [pid 11788] <... rseq resumed>) = 0 [pid 11787] <... close resumed>) = 0 [pid 11785] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11788] set_robust_list(0x7f504ff7f9a0, 24 [pid 11787] symlink("/dev/binderfs", "./binderfs" [pid 11785] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./570/cgroup.net", [pid 5050] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11787] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./553/cgroup.net" [pid 11788] <... set_robust_list resumed>) = 0 [pid 11785] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./542", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11788] rt_sigprocmask(SIG_SETMASK, [], [pid 11787] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11785] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./571/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11788] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11787] <... futex resumed>) = 0 [pid 11785] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./570/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11788] open(".", O_RDONLY [pid 11787] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11788] <... open resumed>) = 3 [pid 11787] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11787] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] newfstatat(3, "", [pid 11788] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11787] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./571/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11788] <... futex resumed>) = 1 [pid 11787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] getdents64(3, [pid 5046] getdents64(3, [pid 11788] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11787] <... mmap resumed>) = 0x7f504ff5f000 [pid 11785] <... futex resumed>) = 0 [pid 5045] getdents64(3, [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11785] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] close(3 [pid 5050] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] close(3 [pid 11788] <... futex resumed>) = 0 [pid 11787] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11785] <... futex resumed>) = 1 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./542/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11788] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11787] <... mprotect resumed>) = 0 [pid 11785] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 5046] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11788] <... fcntl resumed>) = 0 [pid 11787] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./542/cgroup.cpu", [pid 11788] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11787] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11788] <... futex resumed>) = 1 [pid 11787] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11785] <... futex resumed>) = 0 [pid 11788] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 11789 attached ) = -1 EAGAIN (Resource temporarily unavailable) [pid 11787] <... clone3 resumed> => {parent_tid=[1117]}, 88) = 1117 [pid 11785] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./542/cgroup.cpu" [pid 11789] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11788] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11787] rt_sigprocmask(SIG_SETMASK, [], [pid 11785] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11789] <... rseq resumed>) = 0 [pid 11788] <... openat resumed>) = 4 [pid 11787] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11785] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] rmdir("./570" [pid 5050] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5046] rmdir("./553" [pid 5045] umount2("./542/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11789] set_robust_list(0x7f504ff7f9a0, 24 [pid 11787] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 11789] <... set_robust_list resumed>) = 0 [pid 11788] +++ killed by SIGIO +++ [pid 11787] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11789] rt_sigprocmask(SIG_SETMASK, [], [pid 11787] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] mkdir("./571", 0777 [pid 5050] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./542/binderfs", [pid 11789] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11789] open(".", O_RDONLY [pid 5045] unlink("./542/binderfs") = 0 [pid 11789] <... open resumed>) = 3 [pid 5045] umount2("./542/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11789] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./542/cgroup", [pid 11789] <... futex resumed>) = 1 [pid 11787] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11789] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11787] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11789] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11787] <... futex resumed>) = 0 [pid 5045] unlink("./542/cgroup" [pid 11789] <... fcntl resumed>) = 0 [pid 11787] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11789] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11787] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] mkdir("./554", 0777 [pid 11789] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11787] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11789] <... openat resumed>) = 4 [pid 11787] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 5046] <... mkdir resumed>) = 0 [pid 5045] umount2("./542/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./542/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./542/blkio.bfq.io_wait_time_recursive") = 0 [pid 11789] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11787] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = ? [pid 11789] +++ killed by SIGIO +++ [pid 11785] +++ killed by SIGIO +++ [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./542/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./571/cgroup.net" [pid 11787] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1116, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11791 attached [pid 11791] set_robust_list(0x555556ac56a0, 24 [pid 5050] getdents64(3, [pid 11791] <... set_robust_list resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11790 attached [pid 11791] chdir("./554" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1110 [pid 5045] newfstatat(AT_FDCWD, "./542/cgroup.net", [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1144 [pid 5050] close(3 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1118, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11790] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11791] <... chdir resumed>) = 0 [pid 11790] <... set_robust_list resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./542/cgroup.net" [pid 11791] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] rmdir("./571" [pid 11791] <... prctl resumed>) = 0 [pid 11791] setpgid(0, 0) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11791] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 5050] mkdir("./572", 0777 [pid 5049] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] newfstatat(3, "", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11791] <... symlink resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] close(3 [pid 5049] newfstatat(3, "", [pid 5047] getdents64(3, [pid 5045] <... close resumed>) = 0 [pid 11791] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] rmdir("./542" [pid 11791] <... symlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... rmdir resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./543", 0777 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11791] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5049] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11791] <... openat resumed>) = 3 [pid 11790] chdir("./571" [pid 5049] unlink("./558/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11791] write(3, "1000", 4 [pid 5047] unlink("./557/cgroup.cpu" [pid 11791] <... write resumed>) = 4 [pid 11791] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 11790] <... chdir resumed>) = 0 [pid 11791] <... close resumed>) = 0 [pid 11791] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 11792 attached [pid 11790] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11790] <... prctl resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1147 [pid 5049] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11790] setpgid(0, 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11790] <... setpgid resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11793 attached [pid 11792] set_robust_list(0x555556ac56a0, 24 [pid 11791] <... symlink resumed>) = 0 [pid 11790] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] newfstatat(AT_FDCWD, "./558/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./557/binderfs", [pid 11793] set_robust_list(0x555556ac56a0, 24 [pid 11791] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11793] <... set_robust_list resumed>) = 0 [pid 11791] <... futex resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1088 [pid 11793] chdir("./543" [pid 11791] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11793] <... chdir resumed>) = 0 [pid 11791] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11793] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11791] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11793] <... prctl resumed>) = 0 [pid 11791] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11793] setpgid(0, 0) = 0 [pid 11791] <... mmap resumed>) = 0x7f504ff5f000 [pid 11793] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11792] <... set_robust_list resumed>) = 0 [pid 11791] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11793] <... symlink resumed>) = 0 [pid 11792] chdir("./572" [pid 11791] <... mprotect resumed>) = 0 [pid 11790] <... symlink resumed>) = 0 [pid 5049] unlink("./558/binderfs" [pid 5047] unlink("./557/binderfs" [pid 11792] <... chdir resumed>) = 0 [pid 11790] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11793] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11791] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... unlink resumed>) = 0 [pid 11793] <... symlink resumed>) = 0 [pid 11792] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11790] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11792] <... prctl resumed>) = 0 [pid 11793] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11791] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11793] <... symlink resumed>) = 0 [pid 11792] setpgid(0, 0 [pid 11791] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11790] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11792] <... setpgid resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11794 attached [pid 11793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11792] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11790] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./558/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./557/cgroup", [pid 11794] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11793] <... openat resumed>) = 3 [pid 11791] <... clone3 resumed> => {parent_tid=[1111]}, 88) = 1111 [pid 11790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11794] <... rseq resumed>) = 0 [pid 11791] rt_sigprocmask(SIG_SETMASK, [], [pid 11790] <... openat resumed>) = 3 [pid 11794] set_robust_list(0x7f504ff7f9a0, 24 [pid 11793] write(3, "1000", 4 [pid 11792] <... symlink resumed>) = 0 [pid 11791] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11794] <... set_robust_list resumed>) = 0 [pid 11793] <... write resumed>) = 4 [pid 11794] rt_sigprocmask(SIG_SETMASK, [], [pid 11793] close(3 [pid 11791] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11794] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11793] <... close resumed>) = 0 [pid 11792] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11791] <... futex resumed>) = 0 [pid 11790] write(3, "1000", 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11794] open(".", O_RDONLY [pid 11793] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11794] <... open resumed>) = 3 [pid 11793] <... symlink resumed>) = 0 [pid 11792] <... symlink resumed>) = 0 [pid 11791] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11790] <... write resumed>) = 4 [pid 5049] unlink("./558/cgroup" [pid 5047] unlink("./557/cgroup" [pid 11794] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11793] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11790] close(3 [pid 11794] <... futex resumed>) = 0 [pid 11793] <... futex resumed>) = 0 [pid 11791] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11794] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11793] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11794] <... fcntl resumed>) = 0 [pid 11793] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11791] <... futex resumed>) = 0 [pid 11790] symlink("/dev/binderfs", "./binderfs" [pid 11794] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11793] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11792] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11791] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11790] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11794] <... futex resumed>) = 0 [pid 11793] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11794] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11791] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11794] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11793] <... mmap resumed>) = 0x7f504ff5f000 [pid 11791] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11794] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11793] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11792] <... symlink resumed>) = 0 [pid 11791] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11790] <... futex resumed>) = 0 [pid 5049] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", [pid 11794] <... openat resumed>) = 4 [pid 11793] <... mprotect resumed>) = 0 [pid 11792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11791] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11790] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11794] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11793] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11791] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11790] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11793] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11793] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11792] <... openat resumed>) = 3 [pid 11790] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./557/blkio.bfq.io_wait_time_recursive" [pid 11792] write(3, "1000", 4./strace-static-x86_64: Process 11795 attached ) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11793] <... clone3 resumed> => {parent_tid=[1089]}, 88) = 1089 [pid 11793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11793] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11793] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./558/blkio.bfq.io_wait_time_recursive" [pid 11792] close(3 [pid 11790] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11795] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11794] +++ killed by SIGIO +++ [pid 11792] <... close resumed>) = 0 [pid 11791] +++ killed by SIGIO +++ [pid 11790] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11795] <... rseq resumed>) = 0 [pid 11790] <... mprotect resumed>) = 0 [pid 11792] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11792] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11792] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11792] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11792] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11792] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11792] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1110, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11796 attached [pid 11792] <... clone3 resumed> => {parent_tid=[1148]}, 88) = 1148 [pid 11790] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5047] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 11796] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11795] set_robust_list(0x7f504ff7f9a0, 24 [pid 11792] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11796] <... rseq resumed>) = 0 [pid 11795] <... set_robust_list resumed>) = 0 [pid 11792] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 11796] set_robust_list(0x7f504ff7f9a0, 24 [pid 11795] rt_sigprocmask(SIG_SETMASK, [], [pid 11792] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./558/cgroup.net", [pid 11796] <... set_robust_list resumed>) = 0 [pid 11795] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11792] <... futex resumed>) = 0 [pid 11790] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./557/cgroup.net" [pid 11796] rt_sigprocmask(SIG_SETMASK, [], [pid 11795] open(".", O_RDONLY [pid 11792] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11796] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11796] open(".", O_RDONLY [pid 11790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./558/cgroup.net" [pid 11795] <... open resumed>) = 3 ./strace-static-x86_64: Process 11797 attached [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11797] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11796] <... open resumed>) = 3 [pid 5046] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11797] set_robust_list(0x7f504ff7f9a0, 24 [pid 11796] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11797] <... set_robust_list resumed>) = 0 [pid 11796] <... futex resumed>) = 1 [pid 11797] rt_sigprocmask(SIG_SETMASK, [], [pid 11796] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11792] <... futex resumed>) = 0 [pid 11797] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11792] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11797] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11792] <... futex resumed>) = 1 [pid 11796] <... futex resumed>) = 0 [pid 11792] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11796] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11796] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11792] <... futex resumed>) = 0 [pid 11796] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11792] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11796] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11796] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11792] <... futex resumed>) = 0 [pid 11796] <... openat resumed>) = 4 [pid 11792] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 11796] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11792] <... futex resumed>) = ? [pid 11796] +++ killed by SIGIO +++ [pid 11790] <... clone3 resumed> => {parent_tid=[1145]}, 88) = 1145 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11790] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] getdents64(3, [pid 5047] close(3 [pid 5046] <... openat resumed>) = 3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11795] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] close(3 [pid 5047] <... close resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11795] <... futex resumed>) = 1 [pid 11793] <... futex resumed>) = 0 [pid 11792] +++ killed by SIGIO +++ [pid 11790] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... close resumed>) = 0 [pid 11797] <... futex resumed>) = 0 [pid 11795] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11793] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] <... futex resumed>) = 1 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1147, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] rmdir("./558" [pid 5047] rmdir("./557" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11797] open(".", O_RDONLY [pid 11795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11793] <... futex resumed>) = 0 [pid 11797] <... open resumed>) = 3 [pid 11795] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11793] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11790] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11797] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11795] <... fcntl resumed>) = 0 [pid 5046] getdents64(3, [pid 11797] <... futex resumed>) = 0 [pid 11795] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11797] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11795] <... futex resumed>) = 1 [pid 11793] <... futex resumed>) = 0 [pid 11790] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... rmdir resumed>) = 0 [pid 11797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11795] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11793] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11790] <... futex resumed>) = 0 [pid 5050] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11797] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11793] <... futex resumed>) = 0 [pid 11790] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./559", 0777 [pid 5047] mkdir("./558", 0777 [pid 5046] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11797] <... fcntl resumed>) = 0 [pid 11795] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11793] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11797] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11795] <... openat resumed>) = 4 [pid 11793] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... mkdir resumed>) = 0 [pid 11797] <... futex resumed>) = 1 [pid 11795] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11793] restart_syscall(<... resuming interrupted futex ...> [pid 11790] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 11797] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] newfstatat(3, "", [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11795] +++ killed by SIGIO +++ [pid 11793] <... restart_syscall resumed>) = ? [pid 11790] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11797] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./554/cgroup.cpu" [pid 11797] <... openat resumed>) = 4 [pid 11790] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11799 attached ./strace-static-x86_64: Process 11798 attached [pid 11790] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11797] read(-502141952, [pid 11793] +++ killed by SIGIO +++ [pid 5050] getdents64(3, [pid 5046] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11799] set_robust_list(0x555556ac56a0, 24 [pid 11798] set_robust_list(0x555556ac56a0, 24 [pid 11797] +++ killed by SIGIO +++ [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11799] <... set_robust_list resumed>) = 0 [pid 11798] <... set_robust_list resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1120 [pid 5046] newfstatat(AT_FDCWD, "./554/binderfs", [pid 11799] chdir("./558" [pid 11798] chdir("./559" [pid 5050] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11798] <... chdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./554/binderfs" [pid 11799] <... chdir resumed>) = 0 [pid 11798] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] newfstatat(AT_FDCWD, "./572/cgroup.cpu", [pid 5046] <... unlink resumed>) = 0 [pid 11799] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11798] <... prctl resumed>) = 0 [pid 11790] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11799] <... prctl resumed>) = 0 [pid 11798] setpgid(0, 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1118 [pid 5046] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1088, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] umount2("./543", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1144, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11799] setpgid(0, 0 [pid 11798] <... setpgid resumed>) = 0 [pid 5050] unlink("./572/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 11799] <... setpgid resumed>) = 0 [pid 11798] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./554/cgroup", [pid 5045] newfstatat(3, "", [pid 11799] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5051] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11798] <... symlink resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11799] <... symlink resumed>) = 0 [pid 5050] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11799] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11798] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] newfstatat(3, "", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./554/cgroup" [pid 5045] getdents64(3, [pid 11798] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] getdents64(3, [pid 5045] umount2("./543/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./572/binderfs", [pid 11798] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./543/cgroup.cpu", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./572/binderfs" [pid 5045] unlink("./543/cgroup.cpu" [pid 5051] unlink("./571/cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11799] <... symlink resumed>) = 0 [pid 11798] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11799] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./543/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11798] <... openat resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./571/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./543/binderfs", [pid 11799] <... symlink resumed>) = 0 [pid 11798] write(3, "1000", 4 [pid 5051] unlink("./571/binderfs" [pid 5050] newfstatat(AT_FDCWD, "./572/cgroup", [pid 5046] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11798] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11799] <... openat resumed>) = 3 [pid 11798] close(3 [pid 5050] unlink("./572/cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./543/binderfs" [pid 11799] write(3, "1000", 4 [pid 5051] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11798] <... close resumed>) = 0 [pid 5046] unlink("./554/blkio.bfq.io_wait_time_recursive" [pid 11798] symlink("/dev/binderfs", "./binderfs" [pid 11799] <... write resumed>) = 4 [pid 11798] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11799] close(3 [pid 5051] newfstatat(AT_FDCWD, "./571/cgroup", [pid 5050] <... unlink resumed>) = 0 [pid 11798] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11798] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11799] <... close resumed>) = 0 [pid 11798] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] unlink("./571/cgroup" [pid 5050] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./554/cgroup.net", [pid 5045] umount2("./543/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11799] symlink("/dev/binderfs", "./binderfs" [pid 11798] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11798] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] unlink("./572/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./554/cgroup.net" [pid 11799] <... symlink resumed>) = 0 [pid 11798] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./543/cgroup", [pid 11799] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11798] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 11799] <... futex resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] unlink("./543/cgroup" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11798] <... mprotect resumed>) = 0 [pid 5050] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11799] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11798] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11798] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./572/cgroup.net", [pid 11799] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./543/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11799] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] close(3 [pid 11799] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./572/cgroup.net" [pid 5046] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11800 attached [pid 11799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] rmdir("./554" [pid 11800] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11799] <... mmap resumed>) = 0x7f504ff5f000 [pid 11798] <... clone3 resumed> => {parent_tid=[1121]}, 88) = 1121 [pid 5051] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5046] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./543/blkio.bfq.io_wait_time_recursive", [pid 11800] <... rseq resumed>) = 0 [pid 11799] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11798] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11798] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11798] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... close resumed>) = 0 [pid 5046] mkdir("./555", 0777 [pid 11800] set_robust_list(0x7f504ff7f9a0, 24 [pid 11799] <... mprotect resumed>) = 0 [pid 11798] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 5050] rmdir("./572" [pid 5046] <... mkdir resumed>) = 0 [pid 5045] unlink("./543/blkio.bfq.io_wait_time_recursive") = 0 [pid 11799] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... rmdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11800] <... set_robust_list resumed>) = 0 [pid 11798] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11800] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5051] unlink("./571/cgroup.net" [pid 11800] open(".", O_RDONLY [pid 11799] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11799] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] umount2("./543/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11800] <... open resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11800] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11799] <... clone3 resumed> => {parent_tid=[1119]}, 88) = 1119 [pid 5051] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./543/cgroup.net", [pid 11800] <... futex resumed>) = 1 [pid 11799] rt_sigprocmask(SIG_SETMASK, [], [pid 11798] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] mkdir("./573", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11800] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11799] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11798] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11799] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11798] <... futex resumed>) = 0 [pid 5051] close(3 [pid 5045] unlink("./543/cgroup.net"./strace-static-x86_64: Process 11801 attached [pid 11800] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11799] <... futex resumed>) = 0 [pid 11798] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 11801] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11800] <... fcntl resumed>) = 0 [pid 11799] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./571" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11802 attached [pid 11801] <... rseq resumed>) = 0 [pid 11800] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 11801] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11800] <... futex resumed>) = 1 [pid 5051] mkdir("./572", 0777 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1112 [pid 11801] rt_sigprocmask(SIG_SETMASK, [], [pid 11800] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11798] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] getdents64(3, [pid 11798] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11802] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11801] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] close(3 [pid 11801] open(".", O_RDONLY [pid 11802] <... set_robust_list resumed>) = 0 [pid 11800] <... futex resumed>) = 0 [pid 11798] <... futex resumed>) = 1 [pid 5045] <... close resumed>) = 0 [pid 11801] <... open resumed>) = 3 [pid 11800] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11798] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] rmdir("./543" [pid 11802] chdir("./555") = 0 [pid 11801] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11803 attached [pid 11802] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11801] <... futex resumed>) = 1 [pid 11800] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11802] <... prctl resumed>) = 0 [pid 11803] set_robust_list(0x555556ac56a0, 24 [pid 11799] <... futex resumed>) = 0 [pid 5045] mkdir("./544", 0777 [pid 11802] setpgid(0, 0 [pid 11799] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11803] <... set_robust_list resumed>) = 0 [pid 11798] <... futex resumed>) = ? [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1149 [pid 11802] <... setpgid resumed>) = 0 [pid 11800] +++ killed by SIGIO +++ [pid 11802] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11799] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11801] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11799] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11801] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11799] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11801] <... futex resumed>) = 0 [pid 11799] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11801] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11799] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11804 attached [pid 11801] <... openat resumed>) = 4 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1146 [pid 11804] set_robust_list(0x555556ac56a0, 24 [pid 11803] chdir("./573" [pid 11802] <... symlink resumed>) = 0 [pid 11798] +++ killed by SIGIO +++ [pid 11799] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11801] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11804] <... set_robust_list resumed>) = 0 [pid 11803] <... chdir resumed>) = 0 [pid 11802] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1120, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11804] chdir("./572") = 0 [pid 11804] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11802] <... symlink resumed>) = 0 [pid 11802] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11803] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11804] <... prctl resumed>) = 0 [pid 11804] setpgid(0, 0) = 0 [pid 11804] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11801] <... futex resumed>) = ? [pid 11804] <... symlink resumed>) = 0 [pid 11802] <... symlink resumed>) = 0 [pid 11804] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 11803] <... prctl resumed>) = 0 [pid 11802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 11805 attached [pid 11803] setpgid(0, 0 [pid 11801] +++ killed by SIGIO +++ [pid 11805] set_robust_list(0x555556ac56a0, 24 [pid 11804] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11805] <... set_robust_list resumed>) = 0 [pid 11804] <... symlink resumed>) = 0 [pid 11803] <... setpgid resumed>) = 0 [pid 11803] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11805] chdir("./544" [pid 11804] <... openat resumed>) = 3 [pid 11802] <... openat resumed>) = 3 [pid 11805] <... chdir resumed>) = 0 [pid 11805] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11803] <... symlink resumed>) = 0 [pid 5049] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11805] <... prctl resumed>) = 0 [pid 11804] write(3, "1000", 4 [pid 11805] setpgid(0, 0 [pid 11804] <... write resumed>) = 4 [pid 11804] close(3 [pid 11805] <... setpgid resumed>) = 0 [pid 11804] <... close resumed>) = 0 [pid 11805] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11804] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11804] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... symlink resumed>) = 0 [pid 11804] <... futex resumed>) = 0 [pid 11804] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11805] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11804] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11805] <... symlink resumed>) = 0 [pid 11804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11803] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11802] write(3, "1000", 4 [pid 5049] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11804] <... mmap resumed>) = 0x7f504ff5f000 [pid 11805] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11804] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11803] <... symlink resumed>) = 0 [pid 11802] <... write resumed>) = 4 [pid 5049] <... openat resumed>) = 3 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1090 [pid 11804] <... mprotect resumed>) = 0 [pid 11803] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11802] close(3 [pid 5049] newfstatat(3, "", [pid 11804] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11805] <... symlink resumed>) = 0 [pid 11804] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11803] <... symlink resumed>) = 0 [pid 11802] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11802] symlink("/dev/binderfs", "./binderfs" [pid 5049] getdents64(3, [pid 11805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11805] write(3, "1000", 4 [pid 11804] <... clone3 resumed> => {parent_tid=[1147]}, 88) = 1147 [pid 11802] <... symlink resumed>) = 0 [pid 11805] <... write resumed>) = 4 [pid 11804] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11805] close(3 [pid 11804] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11803] <... openat resumed>) = 3 [pid 11805] <... close resumed>) = 0 [pid 11804] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11805] symlink("/dev/binderfs", "./binderfs" [pid 11804] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11802] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11803] write(3, "1000", 4 [pid 5049] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 11805] <... symlink resumed>) = 0 [pid 11802] <... futex resumed>) = 0 [pid 11799] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11806 attached [pid 11805] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11803] <... write resumed>) = 4 [pid 11802] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11806] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11803] close(3 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1118, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11806] <... rseq resumed>) = 0 [pid 11806] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] unlink("./559/cgroup.cpu" [pid 11803] <... close resumed>) = 0 [pid 11806] <... set_robust_list resumed>) = 0 [pid 11802] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11806] rt_sigprocmask(SIG_SETMASK, [], [pid 11803] symlink("/dev/binderfs", "./binderfs" [pid 11806] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11805] <... futex resumed>) = 0 [pid 11805] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11802] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11806] open(".", O_RDONLY [pid 11805] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11805] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11802] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11805] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... restart_syscall resumed>) = 0 [pid 11806] <... open resumed>) = 3 [pid 11805] <... mprotect resumed>) = 0 [pid 11805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11807 attached [pid 11807] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11805] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 11807] set_robust_list(0x7f504ff7f9a0, 24 [pid 11805] rt_sigprocmask(SIG_SETMASK, [], [pid 11807] <... set_robust_list resumed>) = 0 [pid 11805] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11805] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11807] open(".", O_RDONLY [pid 11805] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11807] <... open resumed>) = 3 [pid 11807] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... futex resumed>) = 0 [pid 11807] <... futex resumed>) = 1 [pid 11805] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11807] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11805] <... futex resumed>) = 0 [pid 11807] <... fcntl resumed>) = 0 [pid 11805] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11807] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11807] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11807] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11805] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11802] <... mmap resumed>) = 0x7f504ff5f000 [pid 11802] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11806] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11802] <... mprotect resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./559/binderfs", [pid 11806] <... futex resumed>) = 1 [pid 11804] <... futex resumed>) = 0 [pid 11802] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./559/binderfs" [pid 11804] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11802] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11804] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11802] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11806] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11806] <... fcntl resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11806] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11808 attached [pid 11802] <... clone3 resumed> => {parent_tid=[1113]}, 88) = 1113 [pid 11806] <... futex resumed>) = 1 [pid 5047] <... openat resumed>) = 3 [pid 11806] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11804] <... futex resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 11804] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11808] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11804] <... futex resumed>) = 0 [pid 11802] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11806] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11808] <... rseq resumed>) = 0 [pid 11804] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11802] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11808] set_robust_list(0x7f504ff7f9a0, 24 [pid 11802] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11808] <... set_robust_list resumed>) = 0 [pid 11806] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11802] <... futex resumed>) = 0 [pid 11808] rt_sigprocmask(SIG_SETMASK, [], [pid 11802] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11808] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11808] open(".", O_RDONLY [pid 5047] getdents64(3, [pid 11808] <... open resumed>) = 3 [pid 11808] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11808] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11802] <... futex resumed>) = 0 [pid 11802] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11808] <... futex resumed>) = 0 [pid 11802] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11808] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11808] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11808] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11802] <... futex resumed>) = 0 [pid 11802] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11808] <... futex resumed>) = 0 [pid 11802] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11808] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11805] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11805] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff3e000 [pid 11805] mprotect(0x7f504ff3f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff5e990, parent_tid=0x7f504ff5e990, exit_signal=0, stack=0x7f504ff3e000, stack_size=0x20300, tls=0x7f504ff5e6c0}./strace-static-x86_64: Process 11809 attached [pid 11809] rseq(0x7f504ff5efe0, 0x20, 0, 0x53053053) = 0 [pid 11809] set_robust_list(0x7f504ff5e9a0, 24 [pid 11805] <... clone3 resumed> => {parent_tid=[1092]}, 88) = 1092 [pid 11809] <... set_robust_list resumed>) = 0 [pid 11805] rt_sigprocmask(SIG_SETMASK, [], [pid 11809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11805] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11809] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11805] <... futex resumed>) = 0 [pid 11809] fcntl(3, F_SETOWN, -1 [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11809] <... fcntl resumed>) = 0 [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11809] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11809] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11809] ioctl(-1, EVIOCSFF, {type=0 /* FF_??? */, id=0, direction=0, ...}) = -1 EBADF (Bad file descriptor) [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11804] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11809] <... futex resumed>) = 1 [pid 11805] <... futex resumed>) = 0 [pid 11804] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11809] openat(AT_FDCWD, "/dev/input/event0", O_RDONLY [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11804] <... futex resumed>) = 0 [pid 11809] <... openat resumed>) = 5 [pid 11805] <... futex resumed>) = 0 [pid 11804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff3e000 [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11809] <... futex resumed>) = 0 [pid 11805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11809] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11804] mprotect(0x7f504ff3f000, 131072, PROT_READ|PROT_WRITE [pid 11809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11809] ioctl(5, FIOASYNC, [8] [pid 11805] <... futex resumed>) = 0 [pid 11804] <... mprotect resumed>) = 0 [pid 11809] <... ioctl resumed>) = 0 [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11809] <... futex resumed>) = 0 [pid 11805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11809] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11804] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11809] openat(AT_FDCWD, "/dev/input/event0", O_WRONLY|O_NOCTTY|O_TRUNC|O_NONBLOCK|O_NOFOLLOW|FASYNC|0x800000 [pid 11805] <... futex resumed>) = 0 [pid 11809] <... openat resumed>) = 6 [pid 11802] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11804] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11802] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff5e990, parent_tid=0x7f504ff5e990, exit_signal=0, stack=0x7f504ff3e000, stack_size=0x20300, tls=0x7f504ff5e6c0} [pid 11802] <... futex resumed>) = 0 [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff3e000 [pid 11809] <... futex resumed>) = 0 [pid 11805] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11810 attached [pid 11809] write(6, "\xe2\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2f\x64\x65\x76\x2f\x69\x6e\x70\x75\x74\x2f\x65\x76\x65\x6e\x74\x23\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4200 [pid 11805] <... futex resumed>) = 0 [pid 11804] <... clone3 resumed> => {parent_tid=[1148]}, 88) = 1148 [pid 11802] mprotect(0x7f504ff3f000, 131072, PROT_READ|PROT_WRITE [pid 11808] <... openat resumed>) = 4 [pid 11807] <... openat resumed>) = 4 [pid 11806] <... openat resumed>) = 4 [pid 11803] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11806] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11803] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11803] <... futex resumed>) = 0 [pid 5049] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11806] +++ killed by SIGIO +++ [pid 11808] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11803] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11802] <... mprotect resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./559/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 11803] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11803] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] unlink("./559/cgroup" [pid 5047] unlink("./558/cgroup.cpu" [pid 11803] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11803] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11803] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./558/binderfs", [pid 11803] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11803] <... mprotect resumed>) = 0 [pid 5049] unlink("./559/blkio.bfq.io_wait_time_recursive" [pid 11803] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./558/binderfs" [pid 11803] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11803] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11807] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11807] <... futex resumed>) = 0 [pid 11803] <... clone3 resumed> => {parent_tid=[1150]}, 88) = 1150 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./558/cgroup", [pid 11807] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11803] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11803] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./559/cgroup.net") = 0 [pid 5047] unlink("./558/cgroup") = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] close(3) = 0 [pid 5047] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./559") = 0 [pid 5047] unlink("./558/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./560", 0777 [pid 5047] newfstatat(AT_FDCWD, "./558/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./558/cgroup.net") = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./558") = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] mkdir("./559", 0777) = 0 [ 231.971230][T11809] [ 231.974050][T11809] ===================================================== [ 231.981004][T11809] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected [ 231.988507][T11809] 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0 Not tainted [ 231.995573][T11809] ----------------------------------------------------- [ 232.002544][T11809] syz-executor256/11809 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 232.010845][T11809] ffff888018642118 (&f->f_owner.lock){....}-{2:2}, at: send_sigio+0x28/0x3b0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11812 attached [pid 11812] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1122 [pid 11812] <... set_robust_list resumed>) = 0 [pid 11812] chdir("./560") = 0 [pid 11812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11812] setpgid(0, 0) = 0 [pid 11812] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1120 [pid 11812] <... symlink resumed>) = 0 [pid 11812] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 11812] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11805] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11805] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0} [pid 11812] <... symlink resumed>) = 0 [pid 11805] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11803] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 11803] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11812] write(3, "1000", 4 [pid 11803] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11812] <... write resumed>) = 4 [pid 11812] close(3 [pid 11803] <... mmap resumed>) = 0x7f504ff3e000 [pid 11812] <... close resumed>) = 0 [pid 11812] symlink("/dev/binderfs", "./binderfs" [pid 11803] mprotect(0x7f504ff3f000, 131072, PROT_READ|PROT_WRITE [pid 11812] <... symlink resumed>) = 0 [pid 11803] <... mprotect resumed>) = 0 [pid 11803] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11812] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11812] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11803] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11812] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11803] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff5e990, parent_tid=0x7f504ff5e990, exit_signal=0, stack=0x7f504ff3e000, stack_size=0x20300, tls=0x7f504ff5e6c0} [pid 11812] <... mmap resumed>) = 0x7f504ff5f000 [pid 11812] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11812] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 11814 attached [pid 11803] <... clone3 resumed> => {parent_tid=[1151]}, 88) = 1151 [pid 11814] rseq(0x7f504ff5efe0, 0x20, 0, 0x53053053 [pid 11803] rt_sigprocmask(SIG_SETMASK, [], [pid 11814] <... rseq resumed>) = 0 [pid 11814] set_robust_list(0x7f504ff5e9a0, 24 [pid 11812] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11803] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11814] <... set_robust_list resumed>) = 0 [pid 11812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11803] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11814] rt_sigprocmask(SIG_SETMASK, [], [pid 11803] <... futex resumed>) = 0 [pid 11814] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11803] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11814] fcntl(-1, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT./strace-static-x86_64: Process 11815 attached ) = -1 EBADF (Bad file descriptor) [pid 11812] <... clone3 resumed> => {parent_tid=[1123]}, 88) = 1123 [pid 11815] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11814] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11815] <... rseq resumed>) = 0 [pid 11814] <... futex resumed>) = 1 [pid 11812] rt_sigprocmask(SIG_SETMASK, [], [pid 11803] <... futex resumed>) = 0 [pid 11815] set_robust_list(0x7f504ff7f9a0, 24 [pid 11814] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11815] <... set_robust_list resumed>) = 0 [pid 11812] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11803] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11815] rt_sigprocmask(SIG_SETMASK, [], [pid 11814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11812] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11803] <... futex resumed>) = 0 [pid 11814] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11815] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11812] <... futex resumed>) = 0 [pid 11815] open(".", O_RDONLY [pid 11812] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11803] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11815] <... open resumed>) = 3 [pid 11814] <... openat resumed>) = 3 [pid 11815] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11812] <... futex resumed>) = 0 [pid 11815] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11812] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11815] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [ 232.019727][T11809] [ 232.019727][T11809] and this task is already holding: [ 232.027128][T11809] ffff888019319018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x138/0x4f0 [ 232.035915][T11809] which would create a new lock dependency: [ 232.041925][T11809] (&new->fa_lock){....}-{2:2} -> (&f->f_owner.lock){....}-{2:2} [ 232.049774][T11809] [ 232.049774][T11809] but this new dependency connects a HARDIRQ-irq-safe lock: [ 232.059276][T11809] (&dev->event_lock#2){-...}-{2:2} [ 232.059333][T11809] [pid 11815] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11812] <... futex resumed>) = 0 [pid 11815] <... futex resumed>) = 0 [pid 11814] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11812] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11815] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11814] <... futex resumed>) = 1 [pid 11803] <... futex resumed>) = 0 [pid 11814] fcntl(-1, F_SETOWN, -1 [pid 11812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11803] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11814] <... fcntl resumed>) = -1 EBADF (Bad file descriptor) [pid 11812] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11815] <... futex resumed>) = 0 [pid 11814] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11812] <... futex resumed>) = 1 [pid 11803] <... futex resumed>) = 0 [ 232.059333][T11809] ... which became HARDIRQ-irq-safe at: [ 232.072313][T11809] lock_acquire+0x1ae/0x510 [ 232.077146][T11809] _raw_spin_lock_irqsave+0x3a/0x50 [ 232.082504][T11809] input_event+0x70/0xa0 [ 232.086862][T11809] psmouse_report_standard_buttons+0x30/0x80 [ 232.092954][T11809] psmouse_process_byte+0x39c/0x8a0 [ 232.098266][T11809] psmouse_handle_byte+0x41/0x560 [ 232.103400][T11809] psmouse_receive_byte+0x243/0xe10 [ 232.108713][T11809] ps2_interrupt+0x1fe/0x5a0 [ 232.113433][T11809] serio_interrupt+0x8d/0x150 [ 232.118322][T11809] i8042_interrupt+0x3f2/0x8a0 [ 232.123193][T11809] __handle_irq_event_percpu+0x22a/0x740 [ 232.128946][T11809] handle_irq_event+0xab/0x1e0 [ 232.133817][T11809] handle_edge_irq+0x261/0xcf0 [ 232.138789][T11809] __common_interrupt+0xdb/0x240 [ 232.143894][T11809] common_interrupt+0xa9/0xd0 [ 232.148954][T11809] asm_common_interrupt+0x26/0x40 [ 232.154099][T11809] _raw_spin_unlock_irqrestore+0x31/0x70 [ 232.159844][T11809] i8042_aux_write+0x11a/0x180 [ 232.164806][T11809] ps2_do_sendbyte+0x264/0x6e0 [ 232.169685][T11809] ps2_sendbyte+0x59/0x140 [ 232.174297][T11809] cypress_ps2_sendbyte+0x2e/0x160 [ 232.179800][T11809] cypress_send_ext_cmd+0x1e3/0x8c0 [ 232.185166][T11809] cypress_detect+0x8c/0x1a0 [ 232.189932][T11809] psmouse_try_protocol+0x214/0x370 [ 232.195250][T11809] psmouse_extensions+0x616/0x960 [ 232.200388][T11809] psmouse_switch_protocol+0x528/0x740 [ 232.205960][T11809] psmouse_connect+0x5cc/0xf70 [ 232.210840][T11809] serio_driver_probe+0x71/0xa0 [ 232.215827][T11809] really_probe+0x234/0xc90 [ 232.220533][T11809] __driver_probe_device+0x1de/0x4b0 [ 232.225931][T11809] driver_probe_device+0x4c/0x1a0 [ 232.231068][T11809] __driver_attach+0x274/0x570 [ 232.235943][T11809] bus_for_each_dev+0x13c/0x1d0 [ 232.240946][T11809] serio_handle_event+0x2b8/0xa90 [ 232.246120][T11809] process_one_work+0x884/0x15c0 [ 232.251349][T11809] worker_thread+0x8b9/0x1290 [ 232.256133][T11809] kthread+0x33c/0x440 [ 232.260307][T11809] ret_from_fork+0x45/0x80 [ 232.264838][T11809] ret_from_fork_asm+0x11/0x20 [ 232.269809][T11809] [ 232.269809][T11809] to a HARDIRQ-irq-unsafe lock: [ 232.276836][T11809] (tasklist_lock){.+.+}-{2:2} [ 232.276870][T11809] [ 232.276870][T11809] ... which became HARDIRQ-irq-unsafe at: [ 232.289812][T11809] ... [ 232.289822][T11809] lock_acquire+0x1ae/0x510 [ 232.297243][T11809] _raw_read_lock+0x5f/0x70 [ 232.302034][T11809] do_wait+0x2a8/0xc70 [ 232.306224][T11809] kernel_wait+0xa0/0x150 [ 232.310693][T11809] call_usermodehelper_exec_work+0xf1/0x170 [ 232.316799][T11809] process_one_work+0x884/0x15c0 [ 232.322200][T11809] worker_thread+0x8b9/0x1290 [ 232.327078][T11809] kthread+0x33c/0x440 [ 232.331276][T11809] ret_from_fork+0x45/0x80 [ 232.335906][T11809] ret_from_fork_asm+0x11/0x20 [ 232.340809][T11809] [ 232.340809][T11809] other info that might help us debug this: [ 232.340809][T11809] [ 232.351950][T11809] Chain exists of: [ 232.351950][T11809] &dev->event_lock#2 --> &new->fa_lock --> tasklist_lock [ 232.351950][T11809] [ 232.365022][T11809] Possible interrupt unsafe locking scenario: [ 232.365022][T11809] [ 232.373346][T11809] CPU0 CPU1 [ 232.378717][T11809] ---- ---- [ 232.384178][T11809] lock(tasklist_lock); [ 232.388467][T11809] local_irq_disable(); [ 232.395230][T11809] lock(&dev->event_lock#2); [ 232.402453][T11809] lock(&new->fa_lock); [ 232.409231][T11809] [ 232.412696][T11809] lock(&dev->event_lock#2); [ 232.417674][T11809] [ 232.417674][T11809] *** DEADLOCK *** [ 232.417674][T11809] [ 232.425842][T11809] 8 locks held by syz-executor256/11809: [ 232.431523][T11809] #0: ffff888020d25110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x201/0x750 [ 232.440790][T11809] #1: ffff8880147dd230 (&dev->event_lock#2){-...}-{2:2}, at: input_inject_event+0xa4/0x370 [ 232.451033][T11809] #2: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0xca/0x370 [ 232.460869][T11809] #3: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x3e/0x7a0 [ 232.471195][T11809] #4: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x87/0x390 [ 232.480669][T11809] #5: ffff88807c988028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x10e/0x9b0 [ 232.491714][T11809] #6: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x6d/0x4f0 [ 232.500992][T11809] #7: ffff888019319018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x138/0x4f0 [ 232.510440][T11809] [ 232.510440][T11809] the dependencies between HARDIRQ-irq-safe lock and the holding lock: [ 232.520867][T11809] -> (&dev->event_lock#2){-...}-{2:2} { [ 232.526638][T11809] IN-HARDIRQ-W at: [ 232.530830][T11809] lock_acquire+0x1ae/0x510 [ 232.537737][T11809] _raw_spin_lock_irqsave+0x3a/0x50 [ 232.544978][T11809] input_event+0x70/0xa0 [ 232.551248][T11809] psmouse_report_standard_buttons+0x30/0x80 [ 232.559345][T11809] psmouse_process_byte+0x39c/0x8a0 [ 232.566916][T11809] psmouse_handle_byte+0x41/0x560 [ 232.574049][T11809] psmouse_receive_byte+0x243/0xe10 [ 232.581294][T11809] ps2_interrupt+0x1fe/0x5a0 [ 232.587906][T11809] serio_interrupt+0x8d/0x150 [ 232.594614][T11809] i8042_interrupt+0x3f2/0x8a0 [ 232.601393][T11809] __handle_irq_event_percpu+0x22a/0x740 [ 232.609044][T11809] handle_irq_event+0xab/0x1e0 [ 232.616086][T11809] handle_edge_irq+0x261/0xcf0 [ 232.622877][T11809] __common_interrupt+0xdb/0x240 [ 232.630014][T11809] common_interrupt+0xa9/0xd0 [ 232.636725][T11809] asm_common_interrupt+0x26/0x40 [ 232.643825][T11809] _raw_spin_unlock_irqrestore+0x31/0x70 [ 232.651680][T11809] i8042_aux_write+0x11a/0x180 [ 232.658645][T11809] ps2_do_sendbyte+0x264/0x6e0 [ 232.665436][T11809] ps2_sendbyte+0x59/0x140 [ 232.671893][T11809] cypress_ps2_sendbyte+0x2e/0x160 [ 232.679071][T11809] cypress_send_ext_cmd+0x1e3/0x8c0 [ 232.686412][T11809] cypress_detect+0x8c/0x1a0 [ 232.693035][T11809] psmouse_try_protocol+0x214/0x370 [ 232.700340][T11809] psmouse_extensions+0x616/0x960 [ 232.707395][T11809] psmouse_switch_protocol+0x528/0x740 [ 232.715486][T11809] psmouse_connect+0x5cc/0xf70 [ 232.722366][T11809] serio_driver_probe+0x71/0xa0 [ 232.729259][T11809] really_probe+0x234/0xc90 [ 232.735788][T11809] __driver_probe_device+0x1de/0x4b0 [ 232.743204][T11809] driver_probe_device+0x4c/0x1a0 [ 232.750372][T11809] __driver_attach+0x274/0x570 [ 232.757643][T11809] bus_for_each_dev+0x13c/0x1d0 [ 232.764529][T11809] serio_handle_event+0x2b8/0xa90 [ 232.771588][T11809] process_one_work+0x884/0x15c0 [ 232.778553][T11809] worker_thread+0x8b9/0x1290 [ 232.785254][T11809] kthread+0x33c/0x440 [ 232.791777][T11809] ret_from_fork+0x45/0x80 [ 232.798221][T11809] ret_from_fork_asm+0x11/0x20 [ 232.805114][T11809] INITIAL USE at: [ 232.809238][T11809] lock_acquire+0x1ae/0x510 [ 232.815788][T11809] _raw_spin_lock_irqsave+0x3a/0x50 [ 232.823207][T11809] input_inject_event+0xa4/0x370 [ 232.830356][T11809] led_set_brightness+0x211/0x290 [ 232.837341][T11809] led_trigger_event+0xb2/0x240 [ 232.844235][T11809] kbd_led_trigger_activate+0xc6/0x100 [ 232.851639][T11809] led_trigger_set+0x589/0xc00 [ 232.858347][T11809] led_trigger_set_default+0x1d2/0x230 [ 232.865758][T11809] led_classdev_register_ext+0x78d/0xa10 [ 232.873508][T11809] input_leds_connect+0x54a/0x8d0 [ 232.880478][T11809] input_attach_handler.isra.0+0x17c/0x250 [ 232.888225][T11809] input_register_device+0xb1e/0x1130 [ 232.895547][T11809] atkbd_connect+0x5e2/0xa20 [ 232.902089][T11809] serio_driver_probe+0x71/0xa0 [ 232.909582][T11809] really_probe+0x234/0xc90 [ 232.916106][T11809] __driver_probe_device+0x1de/0x4b0 [ 232.923327][T11809] driver_probe_device+0x4c/0x1a0 [ 232.930297][T11809] __driver_attach+0x274/0x570 [ 232.937005][T11809] bus_for_each_dev+0x13c/0x1d0 [ 232.943792][T11809] serio_handle_event+0x2b8/0xa90 [ 232.950772][T11809] process_one_work+0x884/0x15c0 [ 232.957650][T11809] worker_thread+0x8b9/0x1290 [ 232.964348][T11809] kthread+0x33c/0x440 [ 232.970366][T11809] ret_from_fork+0x45/0x80 [ 232.976719][T11809] ret_from_fork_asm+0x11/0x20 [ 232.983531][T11809] } [ 232.986211][T11809] ... key at: [] __key.6+0x0/0x40 [ 232.993701][T11809] -> (&client->buffer_lock){....}-{2:2} { [ 232.999547][T11809] INITIAL USE at: [ 233.003538][T11809] lock_acquire+0x1ae/0x510 [ 233.009810][T11809] _raw_spin_lock+0x2e/0x40 [ 233.016075][T11809] evdev_pass_values+0x10e/0x9b0 [ 233.022881][T11809] evdev_events+0x1b7/0x390 [ 233.029143][T11809] input_to_handler+0x29e/0x4c0 [ 233.035752][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 233.043152][T11809] input_event_dispose+0x5ee/0x770 [ 233.050118][T11809] input_handle_event+0x11c/0xd80 [ 233.056998][T11809] input_inject_event+0x1bb/0x370 [ 233.063888][T11809] evdev_write+0x456/0x750 [ 233.070934][T11809] vfs_write+0x2a4/0xe40 [ 233.076950][T11809] ksys_write+0x1f0/0x250 [ 233.083042][T11809] do_syscall_64+0x38/0xb0 [ 233.089579][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.097362][T11809] } [ 233.099973][T11809] ... key at: [] __key.3+0x0/0x40 [ 233.107202][T11809] ... acquired at: [ 233.111115][T11809] _raw_spin_lock+0x2e/0x40 [ 233.115817][T11809] evdev_pass_values+0x10e/0x9b0 [ 233.120960][T11809] evdev_events+0x1b7/0x390 [ 233.125653][T11809] input_to_handler+0x29e/0x4c0 [ 233.130701][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 233.136447][T11809] input_event_dispose+0x5ee/0x770 [ 233.141770][T11809] input_handle_event+0x11c/0xd80 [ 233.146996][T11809] input_inject_event+0x1bb/0x370 [ 233.152224][T11809] evdev_write+0x456/0x750 [ 233.156831][T11809] vfs_write+0x2a4/0xe40 [ 233.161283][T11809] ksys_write+0x1f0/0x250 [ 233.165900][T11809] do_syscall_64+0x38/0xb0 [ 233.170525][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.176770][T11809] [ 233.179212][T11809] -> (&new->fa_lock){....}-{2:2} { [ 233.184366][T11809] INITIAL READ USE at: [ 233.188728][T11809] lock_acquire+0x1ae/0x510 [ 233.195263][T11809] _raw_read_lock_irqsave+0x70/0x90 [ 233.202504][T11809] kill_fasync+0x138/0x4f0 [ 233.209056][T11809] evdev_pass_values+0x619/0x9b0 [ 233.216215][T11809] evdev_events+0x1b7/0x390 [ 233.222995][T11809] input_to_handler+0x29e/0x4c0 [ 233.229862][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 233.237434][T11809] input_event_dispose+0x5ee/0x770 [ 233.244833][T11809] input_handle_event+0x11c/0xd80 [ 233.252488][T11809] input_inject_event+0x1bb/0x370 [ 233.259538][T11809] evdev_write+0x456/0x750 [ 233.265969][T11809] vfs_write+0x2a4/0xe40 [ 233.272233][T11809] ksys_write+0x1f0/0x250 [ 233.278672][T11809] do_syscall_64+0x38/0xb0 [ 233.285131][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.293081][T11809] } [ 233.295592][T11809] ... key at: [] __key.0+0x0/0x40 [ 233.302734][T11809] ... acquired at: [ 233.306544][T11809] _raw_read_lock_irqsave+0x70/0x90 [ 233.311940][T11809] kill_fasync+0x138/0x4f0 [ 233.316633][T11809] evdev_pass_values+0x619/0x9b0 [ 233.321779][T11809] evdev_events+0x1b7/0x390 [ 233.326572][T11809] input_to_handler+0x29e/0x4c0 [ 233.331615][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 233.337376][T11809] input_event_dispose+0x5ee/0x770 [ 233.342795][T11809] input_handle_event+0x11c/0xd80 [ 233.348021][T11809] input_inject_event+0x1bb/0x370 [ 233.353417][T11809] evdev_write+0x456/0x750 [ 233.358024][T11809] vfs_write+0x2a4/0xe40 [ 233.362811][T11809] ksys_write+0x1f0/0x250 [ 233.367334][T11809] do_syscall_64+0x38/0xb0 [ 233.371997][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.378097][T11809] [ 233.380426][T11809] [ 233.380426][T11809] the dependencies between the lock to be acquired [ 233.380436][T11809] and HARDIRQ-irq-unsafe lock: [ 233.393977][T11809] -> (tasklist_lock){.+.+}-{2:2} { [ 233.399226][T11809] HARDIRQ-ON-R at: [ 233.403305][T11809] lock_acquire+0x1ae/0x510 [ 233.409780][T11809] _raw_read_lock+0x5f/0x70 [ 233.416132][T11809] do_wait+0x2a8/0xc70 [ 233.422163][T11809] kernel_wait+0xa0/0x150 [ 233.428540][T11809] call_usermodehelper_exec_work+0xf1/0x170 [ 233.436284][T11809] process_one_work+0x884/0x15c0 [ 233.443172][T11809] worker_thread+0x8b9/0x1290 [ 233.449705][T11809] kthread+0x33c/0x440 [ 233.455648][T11809] ret_from_fork+0x45/0x80 [ 233.462179][T11809] ret_from_fork_asm+0x11/0x20 [ 233.468805][T11809] SOFTIRQ-ON-R at: [ 233.472998][T11809] lock_acquire+0x1ae/0x510 [ 233.479443][T11809] _raw_read_lock+0x5f/0x70 [ 233.485967][T11809] do_wait+0x2a8/0xc70 [ 233.491910][T11809] kernel_wait+0xa0/0x150 [ 233.498185][T11809] call_usermodehelper_exec_work+0xf1/0x170 [ 233.505927][T11809] process_one_work+0x884/0x15c0 [ 233.512711][T11809] worker_thread+0x8b9/0x1290 [ 233.519582][T11809] kthread+0x33c/0x440 [ 233.525683][T11809] ret_from_fork+0x45/0x80 [ 233.532048][T11809] ret_from_fork_asm+0x11/0x20 [ 233.538672][T11809] INITIAL USE at: [ 233.542675][T11809] lock_acquire+0x1ae/0x510 [ 233.548946][T11809] _raw_write_lock_irq+0x36/0x50 [ 233.555645][T11809] copy_process+0x4660/0x73f0 [ 233.562081][T11809] kernel_clone+0xfd/0x920 [ 233.568274][T11809] user_mode_thread+0xb4/0xf0 [ 233.574707][T11809] rest_init+0x27/0x2b0 [ 233.580707][T11809] arch_call_rest_init+0x13/0x30 [ 233.587413][T11809] start_kernel+0x39f/0x480 [ 233.593681][T11809] x86_64_start_reservations+0x18/0x30 [ 233.601249][T11809] x86_64_start_kernel+0xb2/0xc0 [ 233.608031][T11809] secondary_startup_64_no_verify+0x166/0x16b [ 233.616036][T11809] INITIAL READ USE at: [ 233.620467][T11809] lock_acquire+0x1ae/0x510 [ 233.627255][T11809] _raw_read_lock+0x5f/0x70 [ 233.634051][T11809] do_wait+0x2a8/0xc70 [ 233.640590][T11809] kernel_wait+0xa0/0x150 [ 233.647221][T11809] call_usermodehelper_exec_work+0xf1/0x170 [ 233.655319][T11809] process_one_work+0x884/0x15c0 [ 233.662483][T11809] worker_thread+0x8b9/0x1290 [ 233.669551][T11809] kthread+0x33c/0x440 [ 233.675838][T11809] ret_from_fork+0x45/0x80 [ 233.682458][T11809] ret_from_fork_asm+0x11/0x20 [ 233.689445][T11809] } [ 233.692051][T11809] ... key at: [] tasklist_lock+0x18/0x40 [ 233.699886][T11809] ... acquired at: [ 233.703781][T11809] _raw_read_lock+0x5f/0x70 [ 233.708479][T11809] send_sigio+0xaf/0x3b0 [ 233.712907][T11809] dnotify_handle_event+0x14b/0x280 [ 233.718489][T11809] fsnotify_handle_inode_event.isra.0+0x1d0/0x350 [ 233.725137][T11809] fsnotify+0x12ee/0x1ae0 [ 233.729671][T11809] path_openat+0x10a5/0x29c0 [ 233.734556][T11809] do_filp_open+0x1de/0x430 [ 233.739266][T11809] do_sys_openat2+0x176/0x1e0 [ 233.744141][T11809] __x64_sys_openat+0x175/0x210 [ 233.749195][T11809] do_syscall_64+0x38/0xb0 [ 233.753904][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.760003][T11809] [ 233.762333][T11809] -> (&f->f_owner.lock){....}-{2:2} { [ 233.767759][T11809] INITIAL USE at: [ 233.771663][T11809] lock_acquire+0x1ae/0x510 [ 233.778118][T11809] _raw_write_lock_irq+0x36/0x50 [ 233.784670][T11809] f_modown+0x2a/0x390 [ 233.790347][T11809] fcntl_dirnotify+0xa9d/0x1080 [ 233.796817][T11809] do_fcntl+0xbd7/0x1260 [ 233.802667][T11809] __x64_sys_fcntl+0x16c/0x1e0 [ 233.809213][T11809] do_syscall_64+0x38/0xb0 [ 233.815246][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.822757][T11809] INITIAL READ USE at: [ 233.827106][T11809] lock_acquire+0x1ae/0x510 [ 233.833638][T11809] _raw_read_lock_irqsave+0x70/0x90 [ 233.840862][T11809] send_sigio+0x28/0x3b0 [ 233.847118][T11809] dnotify_handle_event+0x14b/0x280 [ 233.854369][T11809] fsnotify_handle_inode_event.isra.0+0x1d0/0x350 [ 233.862822][T11809] fsnotify+0x12ee/0x1ae0 [ 233.869181][T11809] path_openat+0x10a5/0x29c0 [ 233.875808][T11809] do_filp_open+0x1de/0x430 [ 233.882340][T11809] do_sys_openat2+0x176/0x1e0 [ 233.889041][T11809] __x64_sys_openat+0x175/0x210 [ 233.895911][T11809] do_syscall_64+0x38/0xb0 [ 233.902492][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 233.910503][T11809] } [ 233.913268][T11809] ... key at: [] __key.5+0x0/0x40 [ 233.920599][T11809] ... acquired at: [ 233.924406][T11809] lock_acquire+0x1ae/0x510 [ 233.929112][T11809] _raw_read_lock_irqsave+0x70/0x90 [ 233.934509][T11809] send_sigio+0x28/0x3b0 [ 233.939028][T11809] kill_fasync+0x1f6/0x4f0 [ 233.943646][T11809] evdev_pass_values+0x619/0x9b0 [ 233.948897][T11809] evdev_events+0x1b7/0x390 [ 233.953799][T11809] input_to_handler+0x29e/0x4c0 [ 233.958845][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 233.964680][T11809] input_event_dispose+0x5ee/0x770 [ 233.970000][T11809] input_handle_event+0x11c/0xd80 [ 233.975314][T11809] input_inject_event+0x1bb/0x370 [ 233.980626][T11809] evdev_write+0x456/0x750 [ 233.985325][T11809] vfs_write+0x2a4/0xe40 [ 233.989759][T11809] ksys_write+0x1f0/0x250 [ 233.994458][T11809] do_syscall_64+0x38/0xb0 [ 233.999073][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 234.005273][T11809] [ 234.007601][T11809] [ 234.007601][T11809] stack backtrace: [ 234.013581][T11809] CPU: 1 PID: 11809 Comm: syz-executor256 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0 [ 234.024095][T11809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 234.034252][T11809] Call Trace: [ 234.037726][T11809] [ 234.040848][T11809] dump_stack_lvl+0xd9/0x1b0 [ 234.045497][T11809] check_irq_usage+0x10b8/0x1c70 [ 234.050487][T11809] ? __read_once_word_nocheck+0x9/0x10 [ 234.056082][T11809] ? unwind_next_frame+0x51/0x2390 [ 234.061240][T11809] ? print_shortest_lock_dependencies_backwards+0x1b0/0x1b0 [ 234.068568][T11809] ? hlock_conflict+0x58/0x200 [ 234.073457][T11809] ? __bfs+0x2f8/0x660 [ 234.077552][T11809] ? save_trace+0xb30/0xb30 [ 234.082266][T11809] ? mark_lock+0x105/0x1950 [ 234.086803][T11809] ? arch_stack_walk+0x112/0x170 [ 234.091776][T11809] ? __lock_acquire+0x2e53/0x5de0 [ 234.096828][T11809] __lock_acquire+0x2e53/0x5de0 [ 234.101785][T11809] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 234.107802][T11809] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 234.113835][T11809] lock_acquire+0x1ae/0x510 [ 234.118369][T11809] ? send_sigio+0x28/0x3b0 [ 234.122892][T11809] ? lock_sync+0x190/0x190 [ 234.127349][T11809] ? lock_sync+0x190/0x190 [ 234.131805][T11809] ? lock_sync+0x190/0x190 [ 234.136255][T11809] _raw_read_lock_irqsave+0x70/0x90 [ 234.141481][T11809] ? send_sigio+0x28/0x3b0 [ 234.145913][T11809] send_sigio+0x28/0x3b0 [ 234.150175][T11809] kill_fasync+0x1f6/0x4f0 [ 234.154615][T11809] evdev_pass_values+0x619/0x9b0 [ 234.159610][T11809] evdev_events+0x1b7/0x390 [ 234.164223][T11809] ? evdev_connect+0x4c0/0x4c0 [ 234.169009][T11809] input_to_handler+0x29e/0x4c0 [ 234.173894][T11809] input_pass_values.part.0+0x52f/0x7a0 [ 234.179566][T11809] input_event_dispose+0x5ee/0x770 [ 234.184745][T11809] input_handle_event+0x11c/0xd80 [ 234.189844][T11809] input_inject_event+0x1bb/0x370 [ 234.194904][T11809] evdev_write+0x456/0x750 [ 234.199351][T11809] ? evdev_read+0xdf0/0xdf0 [ 234.203884][T11809] ? apparmor_file_permission+0x21f/0x4f0 [ 234.209661][T11809] ? bpf_lsm_file_permission+0x9/0x10 [ 234.215066][T11809] ? security_file_permission+0x94/0x100 [ 234.220738][T11809] vfs_write+0x2a4/0xe40 [ 234.225015][T11809] ? evdev_read+0xdf0/0xdf0 [ 234.229539][T11809] ? kernel_write+0x6c0/0x6c0 [ 234.234253][T11809] ? __fget_files+0x272/0x410 [ 234.238971][T11809] ? __fget_light+0xe6/0x260 [ 234.243690][T11809] ksys_write+0x1f0/0x250 [ 234.248060][T11809] ? __ia32_sys_read+0xb0/0xb0 [ 234.252933][T11809] ? lockdep_hardirqs_on+0x7d/0x100 [ 234.258165][T11809] ? _raw_spin_unlock_irq+0x2e/0x50 [ 234.263413][T11809] ? ptrace_notify+0xf4/0x130 [ 234.268117][T11809] do_syscall_64+0x38/0xb0 [ 234.272664][T11809] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 234.278694][T11809] RIP: 0033:0x7f504ffca9a9 [ 234.283147][T11809] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 1d 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 234.303383][T11809] RSP: 002b:00007f504ff5e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 234.312520][T11809] RAX: ffffffffffffffda RBX: 00007f505004b418 RCX: 00007f504ffca9a9 [ 234.320610][T11809] RDX: 0000000000001068 RSI: 0000000020000040 RDI: 0000000000000006 [pid 11815] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11812] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11814] <... futex resumed>) = 0 [pid 11803] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11813 attached ./strace-static-x86_64: Process 11811 attached [pid 11815] <... openat resumed>) = 4 [pid 11814] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11810] +++ killed by SIGIO +++ [pid 11804] +++ killed by SIGIO +++ [pid 11803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11815] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11808] +++ killed by SIGIO +++ [ 234.328696][T11809] RBP: 00007f505004b410 R08: 00007f504ff5e6c0 R09: 00007f504ff5e6c0 [ 234.336683][T11809] R10: 00007f504ff5e6c0 R11: 0000000000000246 R12: 00007f505004b41c [ 234.344681][T11809] R13: 00007f5050018388 R14: 000000008000003d R15: 00007ffee211fb78 [ 234.352851][T11809] [pid 11813] set_robust_list(0x555556ac56a0, 24 [pid 11812] <... futex resumed>) = ? [pid 11811] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11803] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 11802] +++ killed by SIGIO +++ [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1146, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11815] +++ killed by SIGIO +++ [pid 11814] <... futex resumed>) = 0 [pid 11813] <... set_robust_list resumed>) = 0 [pid 11812] +++ killed by SIGIO +++ [pid 11811] <... rseq resumed>) = 0 [pid 11809] <... write resumed>) = 4200 [pid 11803] <... futex resumed>) = 1 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1112, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11814] ioctl(-1, EVIOCSFF, {type=0 /* FF_??? */, id=0, direction=0, ...} [pid 11813] chdir("./559" [pid 11811] set_robust_list(0x7f504ff7f9a0, 24 [pid 11809] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11803] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11814] <... ioctl resumed>) = -1 EBADF (Bad file descriptor) [pid 11813] <... chdir resumed>) = 0 [pid 11811] <... set_robust_list resumed>) = 0 [pid 11809] <... futex resumed>) = 0 [pid 5051] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1122, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11814] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11813] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11811] rt_sigprocmask(SIG_SETMASK, [], [pid 11809] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11814] <... futex resumed>) = 1 [pid 11813] <... prctl resumed>) = 0 [pid 11811] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11805] <... close resumed>) = 0 [pid 11803] <... futex resumed>) = 0 [pid 11814] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11813] setpgid(0, 0 [pid 11811] open(".", O_RDONLY [pid 11805] close(4 [pid 11803] futex(0x7f505004b418, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11813] <... setpgid resumed>) = 0 [pid 11811] <... open resumed>) = 4 [pid 11805] <... close resumed>) = 0 [pid 11803] <... futex resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11814] openat(AT_FDCWD, "/dev/input/event0", O_RDONLY [pid 11813] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11811] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] close(5 [pid 11803] futex(0x7f505004b41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... openat resumed>) = 3 [pid 5046] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11814] <... openat resumed>) = 5 [pid 11813] <... symlink resumed>) = 0 [pid 11811] <... futex resumed>) = 0 [pid 11805] <... close resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11814] futex(0x7f505004b41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11813] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11811] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] close(6 [pid 11803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11814] <... futex resumed>) = 0 [pid 11813] <... symlink resumed>) = 0 [pid 11805] <... close resumed>) = 0 [pid 11803] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5049] getdents64(3, [pid 5046] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11814] futex(0x7f505004b418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11811] <... futex resumed>) = 0 [pid 11805] close(7 [pid 11803] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... openat resumed>) = 3 [pid 11811] ioctl(5, FIOASYNC, [8] [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5049] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 11811] <... ioctl resumed>) = 0 [pid 11805] close(8 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11813] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11811] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./560/cgroup.cpu", [pid 5046] getdents64(3, [pid 11813] <... symlink resumed>) = 0 [pid 11811] <... futex resumed>) = 1 [pid 11805] close(9 [pid 11803] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11811] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./572/cgroup.cpu", [pid 5049] unlink("./560/cgroup.cpu" [pid 5046] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11805] close(10 [pid 11803] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11811] openat(AT_FDCWD, "/dev/input/event0", O_WRONLY|O_NOCTTY|O_TRUNC|O_NONBLOCK|O_NOFOLLOW|FASYNC|0x800000 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./572/cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 11811] <... openat resumed>) = 6 [pid 11805] close(11 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11811] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./555/cgroup.cpu" [pid 11813] <... openat resumed>) = 3 [pid 11811] <... futex resumed>) = 1 [pid 11805] close(12 [pid 11803] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11811] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./572/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11805] close(13 [pid 11803] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./560/binderfs", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11813] write(3, "1000", 4 [pid 11811] write(6, "\xe2\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2f\x64\x65\x76\x2f\x69\x6e\x70\x75\x74\x2f\x65\x76\x65\x6e\x74\x23\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4200 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./572/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./555/binderfs", [pid 11813] <... write resumed>) = 4 [pid 11811] <... write resumed>) = 4200 [pid 11805] close(14 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11813] close(3 [pid 11811] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./560/binderfs" [pid 5046] unlink("./555/binderfs" [pid 11813] <... close resumed>) = 0 [pid 11811] <... futex resumed>) = 1 [pid 11805] close(15 [pid 11803] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11811] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11803] close(3 [pid 5051] newfstatat(AT_FDCWD, "./572/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11813] symlink("/dev/binderfs", "./binderfs" [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11803] close(4 [pid 5051] unlink("./572/cgroup" [pid 5049] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./555/cgroup", [pid 11813] <... symlink resumed>) = 0 [pid 11805] close(16 [pid 11803] <... close resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11813] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(5 [pid 5051] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./560/cgroup", [pid 5046] unlink("./555/cgroup" [pid 11813] <... futex resumed>) = 0 [pid 11805] close(17 [pid 11803] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11813] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(6 [pid 5051] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11813] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11805] close(18 [pid 11803] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./560/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11813] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(7 [pid 5051] unlink("./572/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", [pid 11813] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11805] close(19 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(8 [pid 5051] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 11813] <... mmap resumed>) = 0x7f504ff5f000 [pid 11805] close(20 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(9 [pid 5051] newfstatat(AT_FDCWD, "./572/cgroup.net", [pid 5049] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11805] close(21 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(10 [pid 5046] newfstatat(AT_FDCWD, "./555/cgroup.net", [pid 11805] close(22 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] unlink("./572/cgroup.net" [pid 5049] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11803] close(11 [pid 5046] unlink("./555/cgroup.net" [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5046] <... unlink resumed>) = 0 [pid 11803] close(12 [pid 5049] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 11813] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11805] close(23 [pid 11803] close(13 [pid 5046] close(3 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5046] <... close resumed>) = 0 [pid 11805] close(24 [pid 11803] close(14 [pid 5046] rmdir("./555" [pid 11813] <... mprotect resumed>) = 0 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5046] <... rmdir resumed>) = 0 [pid 11805] close(25 [pid 11803] close(15 [pid 5049] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./556", 0777 [pid 11813] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 11805] close(26 [pid 11803] close(16 [pid 5051] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./560/cgroup.net", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11813] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11816 attached [pid 11805] close(27 [pid 11803] close(17 [pid 5051] close(3 [pid 5049] unlink("./560/cgroup.net" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1114 [pid 11816] set_robust_list(0x555556ac56a0, 24 [pid 11813] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11817 attached [pid 11816] <... set_robust_list resumed>) = 0 [pid 11805] close(28 [pid 11803] close(18 [pid 5049] getdents64(3, [pid 11816] chdir("./556" [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] rmdir("./572" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11817] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11813] <... clone3 resumed> => {parent_tid=[1121]}, 88) = 1121 [pid 11817] <... rseq resumed>) = 0 [pid 11816] <... chdir resumed>) = 0 [pid 11813] rt_sigprocmask(SIG_SETMASK, [], [pid 11805] close(29 [pid 11803] close(19 [pid 11805] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5051] <... rmdir resumed>) = 0 [pid 5049] close(3 [pid 11803] close(20 [pid 5049] <... close resumed>) = 0 [pid 11805] exit_group(0 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11809] <... futex resumed>) = ? [pid 11807] <... futex resumed>) = ? [pid 11805] <... exit_group resumed>) = ? [pid 11803] close(21 [pid 5051] mkdir("./573", 0777 [pid 5049] rmdir("./560" [pid 11809] +++ exited with 0 +++ [pid 11807] +++ exited with 0 +++ [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 11803] close(22) = -1 EBADF (Bad file descriptor) [pid 11803] close(23) = -1 EBADF (Bad file descriptor) [pid 5049] <... rmdir resumed>) = 0 [pid 11803] close(24) = -1 EBADF (Bad file descriptor) [pid 5051] <... mkdir resumed>) = 0 [pid 5049] mkdir("./561", 0777 [pid 11803] close(25) = -1 EBADF (Bad file descriptor) [pid 11805] +++ exited with 0 +++ [pid 11803] close(26 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11816] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5049] <... mkdir resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1090, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] umount2("./544", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11803] close(27 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... openat resumed>) = 3 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 11803] close(28 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5045] umount2("./544/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11803] close(29 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11803] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5045] newfstatat(AT_FDCWD, "./544/cgroup.cpu", [pid 11803] exit_group(0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./544/cgroup.cpu" [pid 11814] <... futex resumed>) = ? [pid 11811] <... futex resumed>) = ? [pid 11803] <... exit_group resumed>) = ? [pid 5045] <... unlink resumed>) = 0 [pid 11816] <... prctl resumed>) = 0 [pid 11814] +++ exited with 0 +++ [pid 11811] +++ exited with 0 +++ [pid 5045] umount2("./544/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11816] setpgid(0, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11816] <... setpgid resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./544/binderfs", [pid 11816] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11816] <... symlink resumed>) = 0 [pid 11803] +++ exited with 0 +++ [pid 5045] unlink("./544/binderfs"./strace-static-x86_64: Process 11819 attached ./strace-static-x86_64: Process 11818 attached [pid 11817] set_robust_list(0x7f504ff7f9a0, 24 [pid 11816] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11813] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11819] set_robust_list(0x555556ac56a0, 24 [pid 11818] set_robust_list(0x555556ac56a0, 24 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1149, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1124 [pid 11819] <... set_robust_list resumed>) = 0 [pid 11818] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1149 [pid 5045] <... unlink resumed>) = 0 [pid 11819] chdir("./573" [pid 11818] chdir("./561" [pid 11817] <... set_robust_list resumed>) = 0 [pid 11816] <... symlink resumed>) = 0 [pid 11813] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./544/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11819] <... chdir resumed>) = 0 [pid 11818] <... chdir resumed>) = 0 [pid 11817] rt_sigprocmask(SIG_SETMASK, [], [pid 11816] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11813] <... futex resumed>) = 0 [pid 5050] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11819] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11818] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11817] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./544/cgroup", [pid 11813] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11819] <... prctl resumed>) = 0 [pid 11818] <... prctl resumed>) = 0 [pid 11817] open(".", O_RDONLY [pid 5050] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11819] setpgid(0, 0 [pid 11818] setpgid(0, 0 [pid 11817] <... open resumed>) = 3 [pid 11816] <... symlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11819] <... setpgid resumed>) = 0 [pid 11818] <... setpgid resumed>) = 0 [pid 11817] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 5045] unlink("./544/cgroup" [pid 11819] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11818] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11817] <... futex resumed>) = 1 [pid 11816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11813] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11819] <... symlink resumed>) = 0 [pid 11818] <... symlink resumed>) = 0 [pid 11817] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11813] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11818] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11816] <... openat resumed>) = 3 [pid 11813] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./544/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11819] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11818] <... symlink resumed>) = 0 [pid 11817] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11813] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11819] <... symlink resumed>) = 0 [pid 11818] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11817] <... fcntl resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11818] <... symlink resumed>) = 0 [pid 11817] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./544/blkio.bfq.io_wait_time_recursive", [pid 11819] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11817] <... futex resumed>) = 1 [pid 11816] write(3, "1000", 4 [pid 11813] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11819] <... symlink resumed>) = 0 [pid 11818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11817] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11816] <... write resumed>) = 4 [pid 11813] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./573/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11818] <... openat resumed>) = 3 [pid 11817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11816] close(3 [pid 11813] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11817] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11816] <... close resumed>) = 0 [pid 11813] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./544/blkio.bfq.io_wait_time_recursive" [pid 11819] <... openat resumed>) = 3 [pid 11818] write(3, "1000", 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./573/binderfs", [pid 11818] <... write resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11819] write(3, "1000", 4 [pid 11818] close(3 [pid 5050] unlink("./573/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 11819] <... write resumed>) = 4 [pid 11818] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./544/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11819] close(3 [pid 11818] symlink("/dev/binderfs", "./binderfs" [pid 11816] symlink("/dev/binderfs", "./binderfs" [pid 5050] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11819] <... close resumed>) = 0 [pid 11818] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./573/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./544/cgroup.net", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11819] symlink("/dev/binderfs", "./binderfs" [pid 11818] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./573/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11819] <... symlink resumed>) = 0 [pid 11818] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] unlink("./544/cgroup.net" [pid 11819] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11818] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11816] <... symlink resumed>) = 0 [pid 11819] <... futex resumed>) = 0 [pid 11818] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11819] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11816] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11819] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11818] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11816] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11819] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11816] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3 [pid 11819] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11818] <... mmap resumed>) = 0x7f504ff5f000 [pid 11819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11816] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... close resumed>) = 0 [pid 11819] <... mmap resumed>) = 0x7f504ff5f000 [pid 11818] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 5045] rmdir("./544" [pid 11819] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11818] <... mprotect resumed>) = 0 [pid 11816] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11819] <... mprotect resumed>) = 0 [pid 11818] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... rmdir resumed>) = 0 [pid 11816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] mkdir("./545", 0777 [pid 11819] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11816] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11818] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11819] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./573/cgroup.net", ./strace-static-x86_64: Process 11820 attached [pid 11819] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11817] <... openat resumed>) = 4 [pid 11816] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11821 attached [pid 11820] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11818] <... clone3 resumed> => {parent_tid=[1125]}, 88) = 1125 [pid 11816] <... mprotect resumed>) = 0 [pid 11821] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11820] <... rseq resumed>) = 0 [pid 11819] <... clone3 resumed> => {parent_tid=[1150]}, 88) = 1150 [pid 11818] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./573/cgroup.net" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11821] <... rseq resumed>) = 0 [pid 11820] set_robust_list(0x7f504ff7f9a0, 24 [pid 11819] rt_sigprocmask(SIG_SETMASK, [], [pid 11818] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11817] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11816] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... unlink resumed>) = 0 [pid 11821] set_robust_list(0x7f504ff7f9a0, 24 [pid 11820] <... set_robust_list resumed>) = 0 [pid 11819] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11818] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11821] <... set_robust_list resumed>) = 0 [pid 11819] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11821] rt_sigprocmask(SIG_SETMASK, [], [pid 11820] rt_sigprocmask(SIG_SETMASK, [], [pid 11818] <... futex resumed>) = 0 [pid 11821] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11820] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11819] <... futex resumed>) = 0 [pid 11818] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 11821] open(".", O_RDONLY [pid 11820] open(".", O_RDONLY [pid 11821] <... open resumed>) = 3 [pid 11819] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11816] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11820] <... open resumed>) = 3 [pid 11816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11813] <... futex resumed>) = ? [pid 11821] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11820] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11819] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11817] +++ killed by SIGIO +++ [pid 5050] close(3 [pid 11821] <... futex resumed>) = 0 [pid 11820] <... futex resumed>) = 1 [pid 11819] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11818] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 11821] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11820] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11819] <... futex resumed>) = 0 [pid 11818] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11821] <... fcntl resumed>) = 0 [pid 11820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11819] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11818] <... futex resumed>) = 0 [pid 5050] rmdir("./573"./strace-static-x86_64: Process 11822 attached [pid 11821] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11820] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11819] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11818] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 11822] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11821] <... futex resumed>) = 0 [pid 11820] <... fcntl resumed>) = 0 [pid 11819] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11822] <... rseq resumed>) = 0 [pid 11821] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11820] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11819] <... futex resumed>) = 0 [pid 11822] set_robust_list(0x7f504ff7f9a0, 24 [pid 11821] <... openat resumed>) = 4 [pid 11820] <... futex resumed>) = 1 [pid 11819] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11818] <... futex resumed>) = 0 [pid 11822] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 11823 attached [pid 11822] rt_sigprocmask(SIG_SETMASK, [], [pid 11821] +++ killed by SIGIO +++ [pid 11820] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11819] +++ killed by SIGIO +++ [pid 11818] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11816] <... clone3 resumed> => {parent_tid=[1115]}, 88) = 1115 [pid 11813] +++ killed by SIGIO +++ [pid 5050] mkdir("./574", 0777 [pid 11823] set_robust_list(0x555556ac56a0, 24 [pid 11822] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11818] <... futex resumed>) = 0 [pid 11816] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1149, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... mkdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1120, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11822] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11820] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11818] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5051] newfstatat(3, "", [pid 11823] <... set_robust_list resumed>) = 0 [pid 11820] <... openat resumed>) = 4 [pid 11818] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11816] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1093 [pid 11823] chdir("./545" [pid 11820] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11818] restart_syscall(<... resuming interrupted futex ...> [pid 11816] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11823] <... chdir resumed>) = 0 [pid 11822] <... futex resumed>) = 0 [pid 11818] <... restart_syscall resumed>) = ? [pid 11816] <... futex resumed>) = 1 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11822] open(".", O_RDONLY [pid 11820] +++ killed by SIGIO +++ [pid 5047] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11822] <... open resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11822] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11822] <... futex resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11822] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] newfstatat(3, "", [pid 5051] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5051] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./573/cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11816] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 11818] +++ killed by SIGIO +++ [pid 11816] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11816] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./559/cgroup.cpu" [pid 11823] <... prctl resumed>) = 0 [pid 11822] <... futex resumed>) = 0 [pid 11816] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1124, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5047] <... unlink resumed>) = 0 [pid 11822] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11816] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11822] <... fcntl resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11822] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./559/binderfs", ./strace-static-x86_64: Process 11824 attached [pid 11822] <... futex resumed>) = 1 [pid 11816] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11824] set_robust_list(0x555556ac56a0, 24 [pid 11822] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11816] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./573/binderfs", [pid 5049] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./559/binderfs" [pid 11824] <... set_robust_list resumed>) = 0 [pid 11822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11816] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1152 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 11824] chdir("./574" [pid 11822] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11816] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(3, "", [pid 5047] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11824] <... chdir resumed>) = 0 [pid 11823] setpgid(0, 0 [pid 11822] <... openat resumed>) = 4 [pid 11816] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./573/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11824] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11823] <... setpgid resumed>) = 0 [pid 11822] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11816] read(0, [pid 5051] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./559/cgroup", [pid 11824] <... prctl resumed>) = 0 [pid 11823] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11823] <... symlink resumed>) = 0 [pid 11823] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 11823] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11824] setpgid(0, 0 [pid 11823] <... openat resumed>) = 3 [pid 11822] +++ killed by SIGIO +++ [pid 11816] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11824] <... setpgid resumed>) = 0 [pid 11823] write(3, "1000", 4 [pid 5051] newfstatat(AT_FDCWD, "./573/cgroup", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./559/cgroup" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1114, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11824] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11823] <... write resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 11824] <... symlink resumed>) = 0 [pid 11823] close(3 [pid 5051] unlink("./573/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11824] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./561/cgroup.cpu" [pid 11824] <... symlink resumed>) = 0 [pid 11823] <... close resumed>) = 0 [pid 5047] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11824] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11823] symlink("/dev/binderfs", "./binderfs" [pid 5051] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11824] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", [pid 5046] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./561/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11823] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./559/blkio.bfq.io_wait_time_recursive" [pid 5046] newfstatat(3, "", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./561/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11824] <... openat resumed>) = 3 [pid 11823] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 11824] write(3, "1000", 4 [pid 11823] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11824] <... write resumed>) = 4 [pid 11823] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11824] close(3 [pid 11823] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./561/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11824] <... close resumed>) = 0 [pid 11823] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./573/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 11824] symlink("/dev/binderfs", "./binderfs" [pid 11823] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11824] <... symlink resumed>) = 0 [pid 11823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./561/cgroup" [pid 5047] unlink("./559/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11824] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11823] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./573/cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11824] <... futex resumed>) = 0 [pid 11823] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./556/cgroup.cpu" [pid 11824] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11823] <... mprotect resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11824] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11823] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] getdents64(3, [pid 5049] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 11824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11823] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11824] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11823] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] close(3 [pid 5049] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] close(3 [pid 11824] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... close resumed>) = 0 [pid 5049] unlink("./561/blkio.bfq.io_wait_time_recursive" [pid 5047] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11825 attached [pid 11824] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] rmdir("./573" [pid 11823] <... clone3 resumed> => {parent_tid=[1094]}, 88) = 1094 [pid 5046] newfstatat(AT_FDCWD, "./556/binderfs", [pid 11825] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11824] <... mprotect resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] rmdir("./559" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11825] <... rseq resumed>) = 0 [pid 11825] set_robust_list(0x7f504ff7f9a0, 24 [pid 11824] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11823] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... rmdir resumed>) = 0 [pid 5049] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./556/binderfs" [pid 11824] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11826 attached => {parent_tid=[1153]}, 88) = 1153 [pid 11826] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11825] <... set_robust_list resumed>) = 0 [pid 11824] rt_sigprocmask(SIG_SETMASK, [], [pid 11823] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11826] set_robust_list(0x7f504ff7f9a0, 24 [pid 11824] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11826] <... set_robust_list resumed>) = 0 [pid 11824] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11826] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11824] <... futex resumed>) = 0 [pid 11826] open(".", O_RDONLY [pid 11825] rt_sigprocmask(SIG_SETMASK, [], [pid 11823] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 5047] mkdir("./560", 0777 [pid 11826] <... open resumed>) = 3 [pid 11824] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11826] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11824] <... futex resumed>) = 0 [pid 11826] <... futex resumed>) = 1 [pid 11824] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11826] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11824] <... futex resumed>) = 0 [pid 11826] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11826] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11824] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... mkdir resumed>) = 0 [pid 11824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11824] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11825] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11823] <... futex resumed>) = 0 [pid 5051] mkdir("./574", 0777 [pid 11823] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./561/cgroup.net" [pid 5046] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11826] <... futex resumed>) = 0 [pid 11825] open(".", O_RDONLY [pid 11824] <... futex resumed>) = 1 [pid 11826] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11824] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11826] <... openat resumed>) = 4 [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11825] <... open resumed>) = 3 [pid 11826] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11824] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11824] restart_syscall(<... resuming interrupted futex ...>) = ? [pid 11826] +++ killed by SIGIO +++ [pid 5046] newfstatat(AT_FDCWD, "./556/cgroup", [pid 11825] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] getdents64(3, [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11825] <... futex resumed>) = 1 [pid 11824] +++ killed by SIGIO +++ [pid 11823] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1152, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11825] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11823] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] close(3 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1122 [pid 5046] unlink("./556/cgroup"./strace-static-x86_64: Process 11827 attached [pid 11827] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11827] chdir("./560" [pid 5049] <... close resumed>) = 0 [pid 11827] <... chdir resumed>) = 0 [pid 5049] rmdir("./561" [pid 11825] <... fcntl resumed>) = 0 [pid 11823] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11827] setpgid(0, 0) = 0 [pid 11827] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11825] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11823] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./574/cgroup.cpu", [pid 11825] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11825] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11827] <... symlink resumed>) = 0 [pid 11823] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1151 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./562", 0777 [pid 5046] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11827] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11823] <... futex resumed>) = 1 [pid 11825] <... futex resumed>) = 0 [pid 11825] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11823] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11827] <... symlink resumed>) = 0 [pid 11827] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 11825] <... openat resumed>) = 4 [pid 5046] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 11827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11827] write(3, "1000", 4 [pid 5049] <... mkdir resumed>) = 0 [pid 11827] <... write resumed>) = 4 [pid 11827] close(3) = 0 [pid 11827] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11827] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11827] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11827] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11827] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11827] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 ./strace-static-x86_64: Process 11828 attached [pid 11827] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11828] set_robust_list(0x555556ac56a0, 24 [pid 11827] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11827] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11828] <... set_robust_list resumed>) = 0 [pid 5050] unlink("./574/cgroup.cpu" [pid 11825] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11823] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 11828] chdir("./574"./strace-static-x86_64: Process 11829 attached [pid 11829] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11827] <... clone3 resumed> => {parent_tid=[1123]}, 88) = 1123 [pid 11829] <... rseq resumed>) = 0 [pid 11827] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 11829] set_robust_list(0x7f504ff7f9a0, 24 [pid 11827] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11829] <... set_robust_list resumed>) = 0 [pid 11827] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11827] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11829] open(".", O_RDONLY [pid 11828] <... chdir resumed>) = 0 [pid 11828] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11828] <... prctl resumed>) = 0 [pid 11829] <... open resumed>) = 3 [pid 11828] setpgid(0, 0 [pid 11827] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11829] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11829] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11827] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11829] <... futex resumed>) = 0 [pid 11829] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11827] <... futex resumed>) = 1 [pid 11829] <... fcntl resumed>) = 0 [pid 11827] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11829] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11829] <... futex resumed>) = 0 [pid 11827] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11829] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11828] <... setpgid resumed>) = 0 [pid 11827] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11830 attached [pid 11828] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11830] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11830] chdir("./562" [pid 11829] <... openat resumed>) = 4 [pid 11827] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11829] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11830] <... chdir resumed>) = 0 [pid 11830] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11829] <... futex resumed>) = ? [pid 11830] <... prctl resumed>) = 0 [pid 11828] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./574/binderfs", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11830] setpgid(0, 0) = 0 [pid 11830] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11830] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./556/cgroup.net" [pid 11828] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11830] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] <... unlink resumed>) = 0 [pid 5050] unlink("./574/binderfs" [pid 11830] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11830] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11828] <... symlink resumed>) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11830] <... symlink resumed>) = 0 [pid 11828] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] close(3 [pid 11830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... close resumed>) = 0 [pid 11829] +++ killed by SIGIO +++ [pid 11827] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./556" [pid 11828] <... symlink resumed>) = 0 [pid 11830] <... openat resumed>) = 3 [pid 11830] write(3, "1000", 4) = 4 [pid 11830] close(3) = 0 [pid 11830] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1122, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11830] <... symlink resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11830] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] newfstatat(AT_FDCWD, "./574/cgroup", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1126 [pid 5046] mkdir("./557", 0777 [pid 11830] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11825] +++ killed by SIGIO +++ [pid 11823] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11830] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] unlink("./574/cgroup" [pid 5046] <... mkdir resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1093, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 11830] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11828] <... openat resumed>) = 3 [pid 11830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 11831 attached [pid 11830] <... mmap resumed>) = 0x7f504ff5f000 [pid 11828] write(3, "1000", 4 [pid 5050] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11830] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11828] <... write resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1116 [pid 11831] set_robust_list(0x555556ac56a0, 24 [pid 11830] <... mprotect resumed>) = 0 [pid 11828] close(3 [pid 5050] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 5047] <... openat resumed>) = 3 [pid 5045] umount2("./545", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11831] <... set_robust_list resumed>) = 0 [pid 11830] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11828] <... close resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11828] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] openat(AT_FDCWD, "./545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11831] chdir("./557" [pid 11830] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11828] <... symlink resumed>) = 0 [pid 5050] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 11831] <... chdir resumed>) = 0 [pid 11830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11828] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11831] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11828] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./574/cgroup.net", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11832 attached [pid 11831] <... prctl resumed>) = 0 [pid 11830] <... clone3 resumed> => {parent_tid=[1127]}, 88) = 1127 [pid 11828] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 11832] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11831] setpgid(0, 0 [pid 11830] rt_sigprocmask(SIG_SETMASK, [], [pid 11828] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] unlink("./574/cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11832] <... rseq resumed>) = 0 [pid 11831] <... setpgid resumed>) = 0 [pid 11830] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./560/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11832] set_robust_list(0x7f504ff7f9a0, 24 [pid 11831] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11830] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11828] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5045] getdents64(3, [pid 11832] <... set_robust_list resumed>) = 0 [pid 11830] <... futex resumed>) = 0 [pid 11828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11832] rt_sigprocmask(SIG_SETMASK, [], [pid 11831] <... symlink resumed>) = 0 [pid 11830] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11828] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11832] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11828] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] unlink("./560/cgroup.cpu" [pid 11831] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5050] close(3) = 0 [pid 5050] rmdir("./574") = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./545/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11828] <... mprotect resumed>) = 0 [pid 5050] mkdir("./575", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11828] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] newfstatat(AT_FDCWD, "./545/cgroup.cpu", [pid 11832] open(".", O_RDONLY [pid 11831] <... symlink resumed>) = 0 [pid 11828] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11831] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... mkdir resumed>) = 0 [pid 5047] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./545/cgroup.cpu"./strace-static-x86_64: Process 11833 attached [pid 11832] <... open resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11833] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11832] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11831] <... symlink resumed>) = 0 [pid 11828] <... clone3 resumed> => {parent_tid=[1152]}, 88) = 1152 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./560/binderfs", [pid 5045] <... unlink resumed>) = 0 [pid 11833] <... rseq resumed>) = 0 [pid 11832] <... futex resumed>) = 1 [pid 11830] <... futex resumed>) = 0 [pid 11828] rt_sigprocmask(SIG_SETMASK, [], [pid 11833] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11833] <... set_robust_list resumed>) = 0 [pid 11831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11833] rt_sigprocmask(SIG_SETMASK, [], [pid 11832] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11830] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11828] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./560/binderfs" [pid 5045] umount2("./545/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11833] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11830] <... futex resumed>) = 0 [pid 11828] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11833] open(".", O_RDONLY [pid 11828] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11832] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5045] newfstatat(AT_FDCWD, "./545/binderfs", [pid 11830] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11828] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11832] <... fcntl resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11833] <... open resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 11833] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11833] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11832] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11828] <... futex resumed>) = 0 [pid 11832] <... futex resumed>) = 1 [pid 11828] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./545/binderfs" [pid 11830] <... futex resumed>) = 0 [pid 11832] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11828] <... futex resumed>) = 1 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./560/cgroup", [pid 11828] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11833] <... futex resumed>) = 0 [pid 11833] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11830] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... unlink resumed>) = 0 [pid 11833] <... fcntl resumed>) = 0 [pid 11831] <... openat resumed>) = 3 [pid 5047] unlink("./560/cgroup" [pid 11833] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11828] <... futex resumed>) = 0 [pid 11833] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11828] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11833] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11828] <... futex resumed>) = 0 [pid 11833] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11831] write(3, "1000", 4 [pid 11828] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11830] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11832] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11831] <... write resumed>) = 4 [pid 5045] umount2("./545/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11833] <... openat resumed>) = 4 [pid 11831] close(3) = 0 [pid 11831] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11833] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11831] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11828] <... futex resumed>) = ? [pid 11831] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11834 attached [pid 11831] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11830] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11831] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11834] set_robust_list(0x555556ac56a0, 24 [pid 11831] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] newfstatat(AT_FDCWD, "./545/cgroup", [pid 11831] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11834] <... set_robust_list resumed>) = 0 [pid 11831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11832] <... openat resumed>) = 4 [pid 11831] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1154 [pid 5047] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11834] chdir("./575" [pid 11833] +++ killed by SIGIO +++ [pid 11832] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11831] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11828] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./545/cgroup" [pid 11834] <... chdir resumed>) = 0 [pid 11831] <... mprotect resumed>) = 0 [pid 11830] <... futex resumed>) = ? [pid 5047] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 11834] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11831] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11834] <... prctl resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1151, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./545/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11834] setpgid(0, 0 [pid 11831] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11834] <... setpgid resumed>) = 0 [pid 11831] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./545/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11835 attached [pid 11834] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11835] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11834] <... symlink resumed>) = 0 [pid 11831] <... clone3 resumed> => {parent_tid=[1117]}, 88) = 1117 [pid 5051] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./560/cgroup.net", [pid 5045] unlink("./545/blkio.bfq.io_wait_time_recursive" [pid 11835] <... rseq resumed>) = 0 [pid 11834] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11832] +++ killed by SIGIO +++ [pid 11831] rt_sigprocmask(SIG_SETMASK, [], [pid 11830] +++ killed by SIGIO +++ [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11835] set_robust_list(0x7f504ff7f9a0, 24 [pid 11834] <... symlink resumed>) = 0 [pid 11831] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./560/cgroup.net" [pid 5051] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11835] <... set_robust_list resumed>) = 0 [pid 11834] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11831] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1126, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] umount2("./545/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11835] rt_sigprocmask(SIG_SETMASK, [], [pid 11834] <... symlink resumed>) = 0 [pid 11831] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 11835] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11831] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11835] open(".", O_RDONLY [pid 11834] <... openat resumed>) = 3 [pid 5051] getdents64(3, [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./545/cgroup.net", [pid 11835] <... open resumed>) = 3 [pid 11834] write(3, "1000", 4 [pid 5047] getdents64(3, [pid 11835] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11834] <... write resumed>) = 4 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11835] <... futex resumed>) = 1 [pid 11834] close(3 [pid 11831] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] close(3 [pid 5045] unlink("./545/cgroup.net" [pid 11835] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11834] <... close resumed>) = 0 [pid 11831] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11834] symlink("/dev/binderfs", "./binderfs" [pid 11831] <... futex resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11835] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11831] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./560" [pid 5045] getdents64(3, [pid 5051] newfstatat(AT_FDCWD, "./574/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11835] <... fcntl resumed>) = 0 [pid 5051] unlink("./574/cgroup.cpu" [pid 5045] close(3 [pid 11834] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11834] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11835] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11834] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11834] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] rmdir("./545" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11834] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./574/binderfs", [pid 5045] mkdir("./546", 0777 [pid 5049] <... openat resumed>) = 3 [pid 11835] <... futex resumed>) = 1 [pid 11834] <... mmap resumed>) = 0x7f504ff5f000 [pid 11831] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5051] unlink("./574/binderfs" [pid 11835] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11834] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11831] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 5047] mkdir("./561", 0777 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11834] <... mprotect resumed>) = 0 [pid 11831] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./574/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./574/cgroup" [pid 11835] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11831] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 11836 attached [pid 11834] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] <... mkdir resumed>) = 0 [pid 11835] <... openat resumed>) = 4 [pid 11831] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11835] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11836] set_robust_list(0x555556ac56a0, 24 [pid 11834] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1095 [pid 11836] <... set_robust_list resumed>) = 0 [pid 11834] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11835] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11836] chdir("./546" [pid 5049] newfstatat(AT_FDCWD, "./562/cgroup.cpu", [pid 11836] <... chdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11837 attached [pid 11836] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11837] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11836] <... prctl resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11834] <... clone3 resumed> => {parent_tid=[1155]}, 88) = 1155 [pid 5049] unlink("./562/cgroup.cpu" [pid 11836] setpgid(0, 0 [pid 11837] <... rseq resumed>) = 0 [pid 11836] <... setpgid resumed>) = 0 [pid 11834] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11838 attached [pid 11837] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1124 [pid 11838] set_robust_list(0x555556ac56a0, 24 [pid 11837] <... set_robust_list resumed>) = 0 [pid 11836] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11834] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11838] <... set_robust_list resumed>) = 0 [pid 11837] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11838] chdir("./561" [pid 11837] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11836] <... symlink resumed>) = 0 [pid 11834] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./562/binderfs", [pid 11838] <... chdir resumed>) = 0 [pid 11837] open(".", O_RDONLY [pid 5051] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11838] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11834] <... futex resumed>) = 0 [pid 11831] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11838] <... prctl resumed>) = 0 [pid 11837] <... open resumed>) = 3 [pid 11836] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11834] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./574/cgroup.net", [pid 11838] setpgid(0, 0 [pid 11837] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11836] <... symlink resumed>) = 0 [pid 11834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./562/binderfs" [pid 11838] <... setpgid resumed>) = 0 [pid 11837] <... futex resumed>) = 0 [pid 11837] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11834] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 11837] <... fcntl resumed>) = 0 [pid 11837] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11836] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11834] <... futex resumed>) = 0 [pid 5051] unlink("./574/cgroup.net" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1116, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11838] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11837] <... futex resumed>) = 0 [pid 11834] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11838] <... symlink resumed>) = 0 [pid 11837] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11834] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./562/cgroup", [pid 11837] <... futex resumed>) = 0 [pid 11834] <... futex resumed>) = 1 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11838] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11837] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11834] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11837] <... openat resumed>) = 4 [pid 11836] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./562/cgroup" [pid 5046] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11838] <... symlink resumed>) = 0 [pid 11837] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11834] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11838] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 5046] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11836] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11836] write(3, "1000", 4) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 11838] <... symlink resumed>) = 0 [pid 11836] close(3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11836] <... close resumed>) = 0 [pid 5051] close(3 [pid 5049] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11836] symlink("/dev/binderfs", "./binderfs" [pid 5046] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11838] <... openat resumed>) = 3 [pid 11836] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11838] write(3, "1000", 4 [pid 11836] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./574" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11838] <... write resumed>) = 4 [pid 5046] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 11838] close(3 [pid 11836] <... futex resumed>) = 0 [pid 11836] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11836] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11838] <... close resumed>) = 0 [pid 11836] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11838] symlink("/dev/binderfs", "./binderfs" [pid 11836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11837] +++ killed by SIGIO +++ [pid 11834] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./557/cgroup.cpu" [pid 11838] <... symlink resumed>) = 0 [pid 11836] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] mkdir("./575", 0777 [pid 5049] unlink("./562/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1154, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11836] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11838] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11838] <... futex resumed>) = 0 [pid 11836] <... mprotect resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./557/binderfs", [pid 11838] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11836] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11838] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11838] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 ./strace-static-x86_64: Process 11839 attached [pid 5050] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11836] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11839] set_robust_list(0x555556ac56a0, 24 [pid 11836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1153 [pid 5050] <... openat resumed>) = 3 [pid 5049] close(3 [pid 5046] unlink("./557/binderfs" [pid 11839] <... set_robust_list resumed>) = 0 [pid 11839] chdir("./575" [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11839] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 11840 attached [pid 5049] rmdir("./562" [pid 5050] newfstatat(3, "", [pid 5046] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11836] <... clone3 resumed> => {parent_tid=[1096]}, 88) = 1096 [pid 11840] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11839] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11840] <... rseq resumed>) = 0 [pid 11839] <... prctl resumed>) = 0 [pid 11836] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11836] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] newfstatat(AT_FDCWD, "./557/cgroup", [pid 11838] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11836] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 5049] mkdir("./563", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11840] set_robust_list(0x7f504ff7f9a0, 24 [pid 11839] setpgid(0, 0 [pid 11838] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11836] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] unlink("./557/cgroup" [pid 11840] <... set_robust_list resumed>) = 0 [pid 11840] rt_sigprocmask(SIG_SETMASK, [], [pid 11839] <... setpgid resumed>) = 0 [pid 11839] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11836] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11840] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11839] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11840] open(".", O_RDONLY [pid 11838] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11840] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./575/cgroup.cpu", [pid 11840] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11839] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] unlink("./557/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11841 attached [pid 11840] <... futex resumed>) = 1 [pid 11839] <... symlink resumed>) = 0 [pid 11841] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11840] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11839] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11838] <... clone3 resumed> => {parent_tid=[1125]}, 88) = 1125 [pid 11836] <... futex resumed>) = 0 [pid 5050] unlink("./575/cgroup.cpu" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11841] <... rseq resumed>) = 0 [pid 11839] <... symlink resumed>) = 0 [pid 11838] rt_sigprocmask(SIG_SETMASK, [], [pid 11836] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11840] <... futex resumed>) = 0 [pid 11836] <... futex resumed>) = 1 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11840] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11836] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11840] <... fcntl resumed>) = 0 [pid 11838] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11840] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11838] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./575/binderfs", [pid 11841] set_robust_list(0x7f504ff7f9a0, 24 [pid 11840] <... futex resumed>) = 1 [pid 11839] <... openat resumed>) = 3 [pid 11838] <... futex resumed>) = 0 [pid 11836] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11840] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11841] <... set_robust_list resumed>) = 0 [pid 11836] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11838] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11836] <... futex resumed>) = 0 [pid 5050] unlink("./575/binderfs" [pid 11841] rt_sigprocmask(SIG_SETMASK, [], [pid 11840] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000./strace-static-x86_64: Process 11842 attached [pid 11841] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11839] write(3, "1000", 4 [pid 11836] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11840] <... openat resumed>) = 4 [pid 11839] <... write resumed>) = 4 [pid 11840] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11836] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11840] +++ killed by SIGIO +++ [pid 11842] set_robust_list(0x555556ac56a0, 24 [pid 11839] close(3 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1128 [pid 5046] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 11839] <... close resumed>) = 0 [pid 11842] <... set_robust_list resumed>) = 0 [pid 11841] open(".", O_RDONLY [pid 11839] symlink("/dev/binderfs", "./binderfs" [pid 5050] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11842] chdir("./563" [pid 11839] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11841] <... open resumed>) = 3 [pid 11836] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./575/cgroup", [pid 5046] unlink("./557/cgroup.net" [pid 11842] <... chdir resumed>) = 0 [pid 11839] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11842] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11839] <... futex resumed>) = 0 [pid 11842] <... prctl resumed>) = 0 [pid 11839] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1095, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11842] setpgid(0, 0 [pid 11839] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11842] <... setpgid resumed>) = 0 [pid 11839] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11842] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11839] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11839] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11839] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11842] <... symlink resumed>) = 0 [pid 11841] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11839] <... mprotect resumed>) = 0 [pid 5050] unlink("./575/cgroup" [pid 5045] <... restart_syscall resumed>) = 0 [pid 11839] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11839] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11839] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] close(3./strace-static-x86_64: Process 11843 attached [pid 11842] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11843] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11842] <... symlink resumed>) = 0 [pid 11841] <... futex resumed>) = 1 [pid 11838] <... futex resumed>) = 0 [pid 11839] <... clone3 resumed> => {parent_tid=[1154]}, 88) = 1154 [pid 5046] rmdir("./557" [pid 5045] umount2("./546", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11843] <... rseq resumed>) = 0 [pid 11841] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11838] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11843] set_robust_list(0x7f504ff7f9a0, 24 [pid 11842] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11839] rt_sigprocmask(SIG_SETMASK, [], [pid 11838] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11843] <... set_robust_list resumed>) = 0 [pid 11842] <... symlink resumed>) = 0 [pid 11841] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11839] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11838] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11843] rt_sigprocmask(SIG_SETMASK, [], [pid 11841] <... fcntl resumed>) = 0 [pid 11841] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... rmdir resumed>) = 0 [pid 11841] <... futex resumed>) = 0 [pid 11843] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11839] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", [pid 5045] openat(AT_FDCWD, "./546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11843] open(".", O_RDONLY [pid 11842] <... openat resumed>) = 3 [pid 11841] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11839] <... futex resumed>) = 0 [pid 11838] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] mkdir("./558", 0777 [pid 11843] <... open resumed>) = 3 [pid 5045] <... openat resumed>) = 3 [pid 11841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11838] <... futex resumed>) = 0 [pid 5050] unlink("./575/blkio.bfq.io_wait_time_recursive" [pid 11843] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11839] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11838] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11843] <... futex resumed>) = 0 [pid 11842] write(3, "1000", 4 [pid 11839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11843] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11839] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... mkdir resumed>) = 0 [pid 11841] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5045] newfstatat(3, "", [pid 11843] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11842] <... write resumed>) = 4 [pid 11839] <... futex resumed>) = 0 [pid 5050] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11843] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11842] close(3 [pid 11839] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11843] <... fcntl resumed>) = 0 [pid 11842] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11843] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11842] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 11843] <... futex resumed>) = 1 [pid 11842] <... symlink resumed>) = 0 [pid 11839] <... futex resumed>) = 0 [pid 11843] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11843] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11839] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11843] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11839] <... futex resumed>) = 0 [pid 11843] <... openat resumed>) = 4 [pid 11842] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11841] <... openat resumed>) = 4 [pid 11839] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./575/cgroup.net" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] getdents64(3, [pid 11842] <... futex resumed>) = 0 [pid 11841] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11842] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 5050] rmdir("./575") = 0 [pid 11842] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11838] <... futex resumed>) = ? [pid 5045] umount2("./546/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11841] +++ killed by SIGIO +++ [pid 11842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 11844 attached [pid 5050] mkdir("./576", 0777 [pid 11842] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11844] set_robust_list(0x555556ac56a0, 24 [pid 11842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11844] <... set_robust_list resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 11844] chdir("./558" [pid 5045] newfstatat(AT_FDCWD, "./546/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11844] <... chdir resumed>) = 0 [pid 11842] <... mmap resumed>) = 0x7f504ff5f000 [pid 11844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11843] +++ killed by SIGIO +++ [pid 11842] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11839] +++ killed by SIGIO +++ [pid 5045] unlink("./546/cgroup.cpu"./strace-static-x86_64: Process 11845 attached [pid 11844] setpgid(0, 0 [pid 11842] <... mprotect resumed>) = 0 [pid 11838] +++ killed by SIGIO +++ [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1153, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1118 [pid 5045] <... unlink resumed>) = 0 [pid 11845] set_robust_list(0x555556ac56a0, 24 [pid 11844] <... setpgid resumed>) = 0 [pid 11842] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] umount2("./546/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11845] <... set_robust_list resumed>) = 0 [pid 11844] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11842] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1156 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11845] chdir("./576" [pid 11844] <... symlink resumed>) = 0 [pid 11842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./546/binderfs", [pid 11845] <... chdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1124, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11845] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11844] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11842] <... clone3 resumed> => {parent_tid=[1129]}, 88) = 1129 [pid 5051] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./546/binderfs"./strace-static-x86_64: Process 11846 attached [pid 11845] <... prctl resumed>) = 0 [pid 11844] <... symlink resumed>) = 0 [pid 11842] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11846] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11845] setpgid(0, 0 [pid 11844] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11842] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11846] set_robust_list(0x7f504ff7f9a0, 24 [pid 5051] newfstatat(3, "", [pid 11846] <... set_robust_list resumed>) = 0 [pid 11845] <... setpgid resumed>) = 0 [pid 11846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11845] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11846] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] <... openat resumed>) = 3 [pid 11842] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11846] <... futex resumed>) = 0 [pid 11844] <... symlink resumed>) = 0 [pid 11842] <... futex resumed>) = 1 [pid 5047] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 11846] open(".", O_RDONLY [pid 11845] <... symlink resumed>) = 0 [pid 11844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11842] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 11846] <... open resumed>) = 3 [pid 11845] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11844] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./546/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11846] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11845] <... symlink resumed>) = 0 [pid 11844] write(3, "1000", 4 [pid 11842] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11846] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11845] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11844] <... write resumed>) = 4 [pid 11842] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./546/cgroup", [pid 11846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11844] close(3 [pid 11842] <... futex resumed>) = 0 [pid 11845] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11846] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11844] <... close resumed>) = 0 [pid 11842] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./575/cgroup.cpu", [pid 5047] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./546/cgroup" [pid 11844] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11844] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] unlink("./575/cgroup.cpu" [pid 5047] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 11846] <... fcntl resumed>) = 0 [pid 11845] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11846] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11845] write(3, "1000", 4 [pid 11844] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./561/cgroup.cpu" [pid 5045] umount2("./546/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11846] <... futex resumed>) = 1 [pid 11845] <... write resumed>) = 4 [pid 11842] <... futex resumed>) = 0 [pid 5051] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11846] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11845] close(3 [pid 11844] <... futex resumed>) = 0 [pid 11842] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11845] <... close resumed>) = 0 [pid 11842] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11846] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11845] symlink("/dev/binderfs", "./binderfs" [pid 11842] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./575/binderfs", [pid 11844] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./546/blkio.bfq.io_wait_time_recursive", [pid 11846] <... openat resumed>) = 4 [pid 11845] <... symlink resumed>) = 0 [pid 11842] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11846] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11845] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11842] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./575/binderfs" [pid 11845] <... futex resumed>) = 0 [pid 11844] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./546/blkio.bfq.io_wait_time_recursive" [pid 11845] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./561/binderfs", [pid 11845] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11844] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11845] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(AT_FDCWD, "./575/cgroup", [pid 11845] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11844] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11846] +++ killed by SIGIO +++ [pid 11845] <... mmap resumed>) = 0x7f504ff5f000 [pid 11844] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11842] +++ killed by SIGIO +++ [pid 5051] unlink("./575/cgroup" [pid 5047] unlink("./561/binderfs" [pid 5045] umount2("./546/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11845] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11844] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11845] <... mprotect resumed>) = 0 [pid 11845] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1128, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11845] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11844] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./546/cgroup.net", [pid 11845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11847 attached [pid 11847] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11845] <... clone3 resumed> => {parent_tid=[1157]}, 88) = 1157 [pid 11847] <... rseq resumed>) = 0 [pid 11845] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", [pid 11847] set_robust_list(0x7f504ff7f9a0, 24 [pid 11845] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11847] <... set_robust_list resumed>) = 0 [pid 11845] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11845] <... futex resumed>) = 0 [pid 11847] open(".", O_RDONLY [pid 11845] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./575/blkio.bfq.io_wait_time_recursive" [pid 11847] <... open resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11844] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./561/cgroup", [pid 5045] unlink("./546/cgroup.net" [pid 11847] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11847] <... futex resumed>) = 1 [pid 11845] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11847] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11845] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11848 attached [pid 11847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11845] <... futex resumed>) = 0 [pid 11844] <... clone3 resumed> => {parent_tid=[1119]}, 88) = 1119 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 11848] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11847] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11845] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11844] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./575/cgroup.net" [pid 5049] newfstatat(3, "", [pid 5047] unlink("./561/cgroup" [pid 11848] <... rseq resumed>) = 0 [pid 11847] <... fcntl resumed>) = 0 [pid 11844] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11848] set_robust_list(0x7f504ff7f9a0, 24 [pid 11847] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11844] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 11848] <... set_robust_list resumed>) = 0 [pid 11847] <... futex resumed>) = 1 [pid 11845] <... futex resumed>) = 0 [pid 11844] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] getdents64(3, [pid 5047] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11848] rt_sigprocmask(SIG_SETMASK, [], [pid 11847] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11845] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11848] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11845] <... futex resumed>) = 0 [pid 5051] close(3 [pid 11848] open(".", O_RDONLY [pid 11847] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11845] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11844] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11845] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] rmdir("./575" [pid 5049] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11845] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... rmdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 11847] <... openat resumed>) = ? [pid 5045] rmdir("./546" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 5047] unlink("./561/blkio.bfq.io_wait_time_recursive" [pid 5045] <... rmdir resumed>) = 0 [pid 11848] <... open resumed>) = 3 [pid 5051] mkdir("./576", 0777 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./563/cgroup.cpu" [pid 11848] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11847] +++ killed by SIGIO +++ [pid 11845] +++ killed by SIGIO +++ [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] mkdir("./547", 0777 [pid 11848] <... futex resumed>) = 1 [pid 11844] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1156, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11848] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11844] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11844] <... futex resumed>) = 0 [pid 5049] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 11848] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11844] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11848] <... fcntl resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11848] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 11848] <... futex resumed>) = 0 [pid 11848] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./563/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11844] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(3, "", [pid 5049] unlink("./563/binderfs" [pid 11844] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./561/cgroup.net" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11849 attached [pid 11848] <... futex resumed>) = 0 [pid 11844] <... futex resumed>) = 1 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1155 [pid 5050] getdents64(3, [pid 11848] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11849] set_robust_list(0x555556ac56a0, 24 [pid 11848] <... openat resumed>) = 4 [pid 11844] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11849] <... set_robust_list resumed>) = 0 [pid 11849] chdir("./576" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 11849] <... chdir resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1097 ./strace-static-x86_64: Process 11850 attached [pid 11850] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11850] chdir("./547") = 0 [pid 11850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11850] setpgid(0, 0) = 0 [pid 11850] symlink("/syzcgroup/unified/syz1", "./cgroup") = 0 [pid 11850] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./563/cgroup", [pid 11849] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] close(3 [pid 11850] <... symlink resumed>) = 0 [pid 11849] <... prctl resumed>) = 0 [pid 5050] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11850] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5047] <... close resumed>) = 0 [pid 11850] <... symlink resumed>) = 0 [pid 11849] setpgid(0, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./563/cgroup" [pid 5047] rmdir("./561" [pid 11849] <... setpgid resumed>) = 0 [pid 11850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11849] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 11850] write(3, "1000", 4) = 4 [pid 11850] close(3 [pid 5047] <... rmdir resumed>) = 0 [pid 11848] +++ killed by SIGIO +++ [pid 11844] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./576/cgroup.cpu", [pid 11850] <... close resumed>) = 0 [pid 11849] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11850] symlink("/dev/binderfs", "./binderfs" [pid 11849] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] unlink("./576/cgroup.cpu" [pid 11850] <... symlink resumed>) = 0 [pid 11849] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./562", 0777 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1118, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11849] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 11850] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./576/binderfs", [pid 11850] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11850] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11849] <... symlink resumed>) = 0 [pid 5050] unlink("./576/binderfs" [pid 11850] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 5047] <... mkdir resumed>) = 0 [pid 11850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11850] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5050] newfstatat(AT_FDCWD, "./576/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11849] <... openat resumed>) = 3 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11850] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./576/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11850] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11849] write(3, "1000", 4 [pid 5049] newfstatat(AT_FDCWD, "./563/cgroup.net", ./strace-static-x86_64: Process 11851 attached [pid 11850] <... clone3 resumed> => {parent_tid=[1098]}, 88) = 1098 [pid 5050] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11851] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11850] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11851] <... rseq resumed>) = 0 [pid 11850] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11851] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", [pid 11850] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11851] <... set_robust_list resumed>) = 0 [pid 11850] <... futex resumed>) = 0 [pid 11849] <... write resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11851] rt_sigprocmask(SIG_SETMASK, [], [pid 11850] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11849] close(3 [pid 11851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./576/blkio.bfq.io_wait_time_recursive" [pid 11851] open(".", O_RDONLY./strace-static-x86_64: Process 11852 attached [pid 11849] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./563/cgroup.net" [pid 5046] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11849] symlink("/dev/binderfs", "./binderfs" [pid 11851] <... open resumed>) = 3 [pid 5050] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 11851] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11850] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11851] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11850] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11849] <... symlink resumed>) = 0 [pid 11852] set_robust_list(0x555556ac56a0, 24 [pid 11851] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11850] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./576/cgroup.net", [pid 5049] getdents64(3, [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1126 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11852] <... set_robust_list resumed>) = 0 [pid 11851] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11850] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11849] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11852] chdir("./562" [pid 11851] <... fcntl resumed>) = 0 [pid 11849] <... futex resumed>) = 0 [pid 5050] unlink("./576/cgroup.net" [pid 5049] close(3 [pid 11852] <... chdir resumed>) = 0 [pid 11851] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11849] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11852] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11851] <... futex resumed>) = 1 [pid 11850] <... futex resumed>) = 0 [pid 11849] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 11852] <... prctl resumed>) = 0 [pid 11849] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] rmdir("./563" [pid 11851] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11852] setpgid(0, 0 [pid 11850] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11849] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 11851] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11850] <... futex resumed>) = 0 [pid 11849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11852] <... setpgid resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11851] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11850] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] close(3 [pid 11852] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11851] <... openat resumed>) = 4 [pid 11849] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11849] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11852] <... symlink resumed>) = 0 [pid 11851] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11850] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... close resumed>) = 0 [pid 5049] mkdir("./564", 0777 [pid 5046] getdents64(3, [pid 5050] rmdir("./576" [pid 11852] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11851] +++ killed by SIGIO +++ [pid 11849] <... mprotect resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11852] <... symlink resumed>) = 0 [pid 11849] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11852] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11849] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11849] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... rmdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 5050] mkdir("./577", 0777) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11852] <... symlink resumed>) = 0 [pid 11849] <... clone3 resumed> => {parent_tid=[1156]}, 88) = 1156 ./strace-static-x86_64: Process 11853 attached [pid 11852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11853] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11853] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11852] <... openat resumed>) = 3 [pid 11853] rt_sigprocmask(SIG_SETMASK, [], [pid 11852] write(3, "1000", 4) = 4 [pid 11849] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11854 attached [pid 11853] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11852] close(3 [pid 11850] +++ killed by SIGIO +++ [pid 11849] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./558/cgroup.cpu"./strace-static-x86_64: Process 11855 attached [pid 11854] set_robust_list(0x555556ac56a0, 24 [pid 11853] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11852] <... close resumed>) = 0 [pid 11849] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11854] <... set_robust_list resumed>) = 0 [pid 11852] symlink("/dev/binderfs", "./binderfs" [pid 11849] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1130 [pid 11855] set_robust_list(0x555556ac56a0, 24 [pid 11853] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1158 [pid 11855] <... set_robust_list resumed>) = 0 [pid 11855] chdir("./577" [pid 11854] chdir("./564" [pid 11853] open(".", O_RDONLY [pid 11852] <... symlink resumed>) = 0 [pid 11849] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1097, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11855] <... chdir resumed>) = 0 [pid 11854] <... chdir resumed>) = 0 [pid 11853] <... open resumed>) = 3 [pid 11852] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./547", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11855] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11853] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11852] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11855] <... prctl resumed>) = 0 [pid 11854] <... prctl resumed>) = 0 [pid 11853] <... futex resumed>) = 1 [pid 11852] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11849] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./558/binderfs", [pid 11855] setpgid(0, 0 [pid 11854] setpgid(0, 0 [pid 11853] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11852] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11849] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] openat(AT_FDCWD, "./547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11855] <... setpgid resumed>) = 0 [pid 11854] <... setpgid resumed>) = 0 [pid 11853] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11849] <... futex resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11855] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11854] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11853] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11852] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11849] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11853] <... fcntl resumed>) = 0 [pid 11852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] newfstatat(3, "", [pid 11855] <... symlink resumed>) = 0 [pid 11854] <... symlink resumed>) = 0 [pid 11853] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11852] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./558/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11855] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11854] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11853] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 11852] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11849] <... futex resumed>) = 0 [pid 11855] <... symlink resumed>) = 0 [pid 11854] <... symlink resumed>) = 0 [pid 11853] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11852] <... mprotect resumed>) = 0 [pid 11849] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 11855] symlink("/syzcgroup/net/syz4", "./cgroup.net") = 0 [pid 11855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11855] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11855] write(3, "1000", 4) = 4 [pid 11855] close(3) = 0 [pid 11855] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11855] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11853] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11849] <... futex resumed>) = 0 [pid 11855] <... futex resumed>) = 0 [pid 11855] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11852] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11854] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./558/cgroup", [pid 11853] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11849] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./547/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11855] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11855] <... mmap resumed>) = 0x7f504ff5f000 [pid 11855] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11855] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11853] <... openat resumed>) = 4 ./strace-static-x86_64: Process 11856 attached [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11856] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11855] <... clone3 resumed> => {parent_tid=[1159]}, 88) = 1159 [pid 11856] set_robust_list(0x7f504ff7f9a0, 24 [pid 11855] rt_sigprocmask(SIG_SETMASK, [], [pid 11856] <... set_robust_list resumed>) = 0 [pid 11855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11854] <... symlink resumed>) = 0 [pid 11852] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] unlink("./558/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./547/cgroup.cpu", [pid 11856] rt_sigprocmask(SIG_SETMASK, [], [pid 11854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11856] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11855] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11856] open(".", O_RDONLY [pid 11855] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11856] <... open resumed>) = 3 [pid 11855] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11856] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] <... openat resumed>) = 3 [pid 5045] unlink("./547/cgroup.cpu" [pid 11852] <... clone3 resumed> => {parent_tid=[1127]}, 88) = 1127 [pid 11855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11856] <... futex resumed>) = 0 [pid 11856] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11855] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11856] <... fcntl resumed>) = 0 [pid 11852] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11857 attached [pid 11856] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11855] <... futex resumed>) = 0 [pid 11853] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11854] write(3, "1000", 4 [pid 11852] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11849] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./547/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11857] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11856] <... futex resumed>) = 0 [pid 11855] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11854] <... write resumed>) = 4 [pid 11852] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11857] <... rseq resumed>) = 0 [pid 11856] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11854] close(3 [pid 11853] +++ killed by SIGIO +++ [pid 11852] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11857] set_robust_list(0x7f504ff7f9a0, 24 [pid 11855] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] <... close resumed>) = 0 [pid 11852] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./547/binderfs", [pid 11857] <... set_robust_list resumed>) = 0 [pid 11856] <... futex resumed>) = 0 [pid 11855] <... futex resumed>) = 1 [pid 11854] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11857] rt_sigprocmask(SIG_SETMASK, [], [pid 11856] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11855] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11857] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11856] <... openat resumed>) = 4 [pid 5046] unlink("./558/blkio.bfq.io_wait_time_recursive" [pid 11857] open(".", O_RDONLY [pid 11854] <... symlink resumed>) = 0 [pid 5045] unlink("./547/binderfs" [pid 11857] <... open resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 11857] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 11857] <... futex resumed>) = 1 [pid 11856] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11855] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11854] <... futex resumed>) = 0 [pid 11852] <... futex resumed>) = 0 [pid 5045] umount2("./547/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11857] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11854] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11852] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11857] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11856] +++ killed by SIGIO +++ [pid 11854] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11857] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11855] +++ killed by SIGIO +++ [pid 11852] <... futex resumed>) = 0 [pid 5046] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./547/cgroup", [pid 11857] <... fcntl resumed>) = 0 [pid 11854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11852] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11849] +++ killed by SIGIO +++ [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11857] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11852] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(AT_FDCWD, "./558/cgroup.net", [pid 11857] <... futex resumed>) = 0 [pid 11854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11852] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1158, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11857] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11854] <... mmap resumed>) = 0x7f504ff5f000 [pid 11852] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1155, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./547/cgroup" [pid 11857] <... openat resumed>) = 4 [pid 11854] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11852] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5050] <... restart_syscall resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11854] <... mprotect resumed>) = 0 [pid 5046] unlink("./558/cgroup.net" [pid 5045] umount2("./547/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11857] +++ killed by SIGIO +++ [pid 11854] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... restart_syscall resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11854] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11852] +++ killed by SIGIO +++ [pid 5050] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1126, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./547/blkio.bfq.io_wait_time_recursive", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11858 attached [pid 11854] <... clone3 resumed> => {parent_tid=[1131]}, 88) = 1131 [pid 5051] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] newfstatat(3, "", [pid 5046] close(3 [pid 5045] unlink("./547/blkio.bfq.io_wait_time_recursive" [pid 11858] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11854] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11858] <... rseq resumed>) = 0 [pid 11854] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5047] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5045] umount2("./547/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11858] set_robust_list(0x7f504ff7f9a0, 24 [pid 11854] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./558" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11858] <... set_robust_list resumed>) = 0 [pid 11854] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./547/cgroup.net", [pid 11858] rt_sigprocmask(SIG_SETMASK, [], [pid 11854] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 11858] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] newfstatat(AT_FDCWD, "./577/cgroup.cpu", [pid 11858] open(".", O_RDONLY [pid 5051] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 5046] mkdir("./559", 0777 [pid 5045] unlink("./547/cgroup.net" [pid 11858] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./576/cgroup.cpu", [pid 5050] unlink("./577/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11858] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 11858] <... futex resumed>) = 1 [pid 11854] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11858] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11854] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11854] <... futex resumed>) = 0 [pid 5051] unlink("./576/cgroup.cpu" [pid 11858] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5045] getdents64(3, [pid 11858] <... fcntl resumed>) = 0 [pid 11854] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11858] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... unlink resumed>) = 0 [pid 11858] <... futex resumed>) = 0 [pid 11854] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 11858] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11854] <... futex resumed>) = 0 [pid 11858] <... openat resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./576/binderfs", [pid 5050] newfstatat(AT_FDCWD, "./577/binderfs", [pid 5045] <... close resumed>) = 0 ./strace-static-x86_64: Process 11859 attached [pid 11858] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11854] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./562/cgroup.cpu", [pid 5045] rmdir("./547" [pid 11859] set_robust_list(0x555556ac56a0, 24 [pid 11858] <... futex resumed>) = ? [pid 5051] unlink("./576/binderfs" [pid 5050] unlink("./577/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1120 [pid 5045] <... rmdir resumed>) = 0 [pid 11859] <... set_robust_list resumed>) = 0 [pid 11858] +++ killed by SIGIO +++ [pid 5045] mkdir("./548", 0777 [pid 11859] chdir("./559" [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./562/cgroup.cpu" [pid 5045] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11859] <... chdir resumed>) = 0 [pid 11859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11859] setpgid(0, 0) = 0 [pid 11859] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./562/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11859] <... symlink resumed>) = 0 [pid 5051] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./562/binderfs" [pid 5050] newfstatat(AT_FDCWD, "./577/cgroup", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./576/cgroup", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11859] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11854] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./577/cgroup" [pid 11859] <... symlink resumed>) = 0 [pid 5047] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./576/cgroup" [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11860 attached [pid 11859] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1130, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1099 [pid 11860] set_robust_list(0x555556ac56a0, 24 [pid 11859] <... symlink resumed>) = 0 [pid 5051] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./562/cgroup", [pid 11860] <... set_robust_list resumed>) = 0 [pid 11859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11860] chdir("./548" [pid 11859] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 5049] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11860] <... chdir resumed>) = 0 [pid 11859] write(3, "1000", 4 [pid 5050] <... unlink resumed>) = 0 [pid 5051] unlink("./576/blkio.bfq.io_wait_time_recursive" [pid 11860] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11859] <... write resumed>) = 4 [pid 5047] unlink("./562/cgroup" [pid 11860] <... prctl resumed>) = 0 [pid 11859] close(3 [pid 5049] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 11860] setpgid(0, 0 [pid 11859] <... close resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 11860] <... setpgid resumed>) = 0 [pid 11859] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11860] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11859] <... symlink resumed>) = 0 [pid 5051] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./577/cgroup.net", [pid 5047] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11860] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./577/cgroup.net" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 5051] newfstatat(AT_FDCWD, "./576/cgroup.net", [pid 11860] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11859] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11859] <... futex resumed>) = 0 [pid 5051] unlink("./576/cgroup.net" [pid 5050] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 11860] <... symlink resumed>) = 0 [pid 11859] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(AT_FDCWD, "./564/cgroup.cpu", [pid 11860] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11859] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11860] <... symlink resumed>) = 0 [pid 11859] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] unlink("./564/cgroup.cpu") = 0 [pid 11859] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11859] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11859] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./564/binderfs", [pid 11859] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11859] <... mprotect resumed>) = 0 [pid 5049] unlink("./564/binderfs" [pid 11860] <... openat resumed>) = 3 [pid 11859] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] getdents64(3, [pid 5050] close(3 [pid 5047] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./564/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 5051] close(3 [pid 5050] rmdir("./577" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11860] write(3, "1000", 4 [pid 5049] unlink("./564/cgroup" [pid 11860] <... write resumed>) = 4 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./562/cgroup.net" [pid 11860] close(3 [pid 5051] <... close resumed>) = 0 [pid 11860] <... close resumed>) = 0 [pid 11860] symlink("/dev/binderfs", "./binderfs" [pid 11859] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11860] <... symlink resumed>) = 0 [pid 11859] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] rmdir("./576" [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11861 attached [pid 11860] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11861] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11860] <... futex resumed>) = 0 [pid 11859] <... clone3 resumed> => {parent_tid=[1121]}, 88) = 1121 [pid 5049] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", [pid 11861] <... rseq resumed>) = 0 [pid 11860] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11859] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 11861] set_robust_list(0x7f504ff7f9a0, 24 [pid 11860] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11859] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11861] <... set_robust_list resumed>) = 0 [pid 11860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11859] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./564/blkio.bfq.io_wait_time_recursive" [pid 11861] rt_sigprocmask(SIG_SETMASK, [], [pid 11860] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11859] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11861] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11861] open(".", O_RDONLY [pid 11860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11859] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11861] <... open resumed>) = 3 [pid 11860] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] mkdir("./578", 0777 [pid 5049] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 11861] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11860] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 11861] <... futex resumed>) = 1 [pid 11860] <... mprotect resumed>) = 0 [pid 11859] <... futex resumed>) = 0 [pid 5051] mkdir("./577", 0777 [pid 5049] newfstatat(AT_FDCWD, "./564/cgroup.net", [pid 5047] rmdir("./562" [pid 11861] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11860] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11859] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11861] <... fcntl resumed>) = 0 [pid 11859] <... futex resumed>) = 0 [pid 11861] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11860] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11859] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./564/cgroup.net" [pid 11861] <... futex resumed>) = 0 [pid 11860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] <... rmdir resumed>) = 0 [pid 11861] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11859] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... unlink resumed>) = 0 [pid 5047] mkdir("./563", 0777./strace-static-x86_64: Process 11862 attached [pid 11861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11860] <... clone3 resumed> => {parent_tid=[1100]}, 88) = 1100 [pid 11859] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11862] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11861] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11860] rt_sigprocmask(SIG_SETMASK, [], [pid 11859] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11862] <... rseq resumed>) = 0 [pid 11861] <... openat resumed>) = 4 [pid 11860] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] getdents64(3, [pid 5047] <... mkdir resumed>) = 0 [pid 11862] set_robust_list(0x7f504ff7f9a0, 24 [pid 11860] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11862] <... set_robust_list resumed>) = 0 [pid 11860] <... futex resumed>) = 0 [pid 11862] rt_sigprocmask(SIG_SETMASK, [], [pid 11860] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] close(3 [pid 11862] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11862] open(".", O_RDONLY [pid 5049] rmdir("./564" [pid 11862] <... open resumed>) = 3 [pid 5049] <... rmdir resumed>) = 0 [pid 11862] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11861] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11859] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) ./strace-static-x86_64: Process 11864 attached ./strace-static-x86_64: Process 11863 attached [pid 11862] <... futex resumed>) = 1 [pid 11861] +++ killed by SIGIO +++ [pid 11860] <... futex resumed>) = 0 [pid 5049] mkdir("./565", 0777 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11862] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11860] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11860] <... futex resumed>) = 0 [pid 11862] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11860] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11862] <... fcntl resumed>) = 0 [pid 11862] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11860] <... futex resumed>) = 0 [pid 11862] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11860] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11860] <... futex resumed>) = 0 [pid 11862] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11860] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11862] <... openat resumed>) = 4 [pid 11860] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11862] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11860] syscall_0xfffffffffffffdfc(0x7f505004b401, 0x80, 0, 0x7ffee211fc80, 0x1, 0x200000000 [pid 11864] set_robust_list(0x555556ac56a0, 24./strace-static-x86_64: Process 11865 attached [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1160 [pid 11864] <... set_robust_list resumed>) = 0 [pid 11863] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1157 [pid 11865] set_robust_list(0x555556ac56a0, 24 [pid 11864] chdir("./577" [pid 11863] <... set_robust_list resumed>) = 0 [pid 11862] +++ killed by SIGIO +++ [pid 11860] +++ killed by SIGIO +++ [pid 11859] +++ killed by SIGIO +++ [pid 5049] <... mkdir resumed>) = 0 [pid 11865] <... set_robust_list resumed>) = 0 [pid 11865] chdir("./563") = 0 [pid 11865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11865] setpgid(0, 0) = 0 [pid 11865] symlink("/syzcgroup/unified/syz2", "./cgroup") = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1099, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11865] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu") = 0 [pid 11865] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5045] umount2("./548", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11865] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 11865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] newfstatat(3, "", [pid 11865] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./548/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11865] write(3, "1000", 4 [pid 5045] newfstatat(AT_FDCWD, "./548/cgroup.cpu", [pid 11865] <... write resumed>) = 4 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11865] close(3) = 0 [pid 11865] symlink("/dev/binderfs", "./binderfs" [pid 5045] unlink("./548/cgroup.cpu" [pid 11865] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./548/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./548/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11865] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11865] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] unlink("./548/binderfs" [pid 11865] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11863] chdir("./578" [pid 11864] <... chdir resumed>) = 0 [pid 11865] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11863] <... chdir resumed>) = 0 [pid 11865] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11864] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... unlink resumed>) = 0 [pid 11865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5045] umount2("./548/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11865] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] newfstatat(AT_FDCWD, "./548/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11865] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] unlink("./548/cgroup") = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11864] <... prctl resumed>) = 0 [pid 11865] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11865] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] umount2("./548/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./548/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11866 attached [pid 11865] <... clone3 resumed> => {parent_tid=[1129]}, 88) = 1129 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11866] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11865] rt_sigprocmask(SIG_SETMASK, [], [pid 11866] <... rseq resumed>) = 0 [pid 11865] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11866] set_robust_list(0x7f504ff7f9a0, 24 [pid 11865] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./548/blkio.bfq.io_wait_time_recursive" [pid 11866] <... set_robust_list resumed>) = 0 [pid 11865] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11867 attached [pid 11866] rt_sigprocmask(SIG_SETMASK, [], [pid 11865] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11864] setpgid(0, 0 [pid 11863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11866] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11866] open(".", O_RDONLY [pid 11867] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11867] chdir("./565" [pid 11866] <... open resumed>) = 3 [pid 5045] umount2("./548/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./548/cgroup.net", [pid 11867] <... chdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11867] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11866] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11867] <... prctl resumed>) = 0 [pid 11866] <... futex resumed>) = 1 [pid 11865] <... futex resumed>) = 0 [pid 5045] unlink("./548/cgroup.net" [pid 11867] setpgid(0, 0 [pid 11866] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11865] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11864] <... setpgid resumed>) = 0 [pid 11863] <... prctl resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1120, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... unlink resumed>) = 0 [pid 11867] <... setpgid resumed>) = 0 [pid 11866] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11865] <... futex resumed>) = 0 [pid 11866] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11865] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11863] setpgid(0, 0 [pid 11867] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11866] <... fcntl resumed>) = 0 [pid 11863] <... setpgid resumed>) = 0 [pid 11864] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1128 [pid 5046] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11867] <... symlink resumed>) = 0 [pid 11866] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11863] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11864] <... symlink resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3 [pid 11866] <... futex resumed>) = 1 [pid 11865] <... futex resumed>) = 0 [pid 11863] <... symlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11866] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11865] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11864] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11863] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 11867] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11866] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11865] <... futex resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] rmdir("./548" [pid 11867] <... symlink resumed>) = 0 [pid 11866] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11865] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11864] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11866] <... openat resumed>) = 4 [pid 11864] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11863] <... symlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1132 [pid 5046] getdents64(3, [pid 5045] mkdir("./549", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... mkdir resumed>) = 0 [pid 11867] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11866] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11865] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11864] <... symlink resumed>) = 0 [pid 11867] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11866] +++ killed by SIGIO +++ [pid 11864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11867] <... openat resumed>) = 3 [pid 11864] <... openat resumed>) = 3 [pid 11863] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 11867] write(3, "1000", 4) = 4 [pid 11867] close(3) = 0 [pid 11867] symlink("/dev/binderfs", "./binderfs" [pid 11863] <... symlink resumed>) = 0 [pid 11867] <... symlink resumed>) = 0 [pid 11864] write(3, "1000", 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11864] <... write resumed>) = 4 [pid 11863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] unlink("./559/cgroup.cpu" [pid 11864] close(3 [pid 11867] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11867] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11867] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... unlink resumed>) = 0 [pid 11864] <... close resumed>) = 0 [pid 5046] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11867] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11864] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] newfstatat(AT_FDCWD, "./559/binderfs", [pid 11867] <... mmap resumed>) = 0x7f504ff5f000 [pid 11867] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11864] <... symlink resumed>) = 0 [pid 11867] <... mprotect resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./559/binderfs" [pid 11864] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11868 attached [pid 11867] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11865] +++ killed by SIGIO +++ [pid 11864] <... futex resumed>) = 0 [pid 11863] <... openat resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1101 [pid 11864] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11867] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11863] write(3, "1000", 4 [pid 11868] set_robust_list(0x555556ac56a0, 24 [pid 11867] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11864] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11863] <... write resumed>) = 4 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1128, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./559/cgroup", ./strace-static-x86_64: Process 11869 attached [pid 11868] <... set_robust_list resumed>) = 0 [pid 11864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11863] close(3 [pid 11869] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11868] chdir("./549" [pid 11867] <... clone3 resumed> => {parent_tid=[1133]}, 88) = 1133 [pid 11864] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11863] <... close resumed>) = 0 [pid 5047] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11869] <... rseq resumed>) = 0 [pid 11868] <... chdir resumed>) = 0 [pid 11864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11863] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./559/cgroup" [pid 11869] set_robust_list(0x7f504ff7f9a0, 24 [pid 11868] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11869] <... set_robust_list resumed>) = 0 [pid 11864] <... mmap resumed>) = 0x7f504ff5f000 [pid 11867] rt_sigprocmask(SIG_SETMASK, [], [pid 11869] rt_sigprocmask(SIG_SETMASK, [], [pid 11867] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11869] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11867] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11867] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11869] open(".", O_RDONLY [pid 11864] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... unlink resumed>) = 0 [pid 11869] <... open resumed>) = 3 [pid 11868] <... prctl resumed>) = 0 [pid 11864] <... mprotect resumed>) = 0 [pid 5046] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11869] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11869] <... futex resumed>) = 1 [pid 11867] <... futex resumed>) = 0 [pid 11868] setpgid(0, 0 [pid 11864] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", [pid 11869] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11868] <... setpgid resumed>) = 0 [pid 11864] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11868] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11867] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11869] <... futex resumed>) = 0 [pid 11867] <... futex resumed>) = 1 [pid 11869] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11867] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11869] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] unlink("./559/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11870 attached [pid 11869] <... futex resumed>) = 0 [pid 11867] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11863] <... symlink resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 11870] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11869] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11867] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11864] <... clone3 resumed> => {parent_tid=[1158]}, 88) = 1158 [pid 11863] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 11870] <... rseq resumed>) = 0 [pid 11870] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11870] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 11868] <... symlink resumed>) = 0 [pid 11867] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11864] rt_sigprocmask(SIG_SETMASK, [], [pid 11863] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11868] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11867] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11864] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11863] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 11867] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11864] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11863] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 11870] <... futex resumed>) = 0 [pid 11869] <... openat resumed>) = ? [pid 11868] <... symlink resumed>) = 0 [pid 11864] <... futex resumed>) = 1 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11870] open(".", O_RDONLY [pid 11869] +++ killed by SIGIO +++ [pid 11863] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11863] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11870] <... open resumed>) = 3 [pid 11863] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11870] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11868] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11864] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11863] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] unlink("./563/cgroup.cpu" [pid 5046] unlink("./559/cgroup.net" [pid 11863] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11870] <... futex resumed>) = 0 [pid 11868] <... symlink resumed>) = 0 [pid 11864] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11863] <... mprotect resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11870] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11864] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11868] <... openat resumed>) = 3 [pid 11867] +++ killed by SIGIO +++ [pid 11864] <... futex resumed>) = 0 [pid 11863] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11870] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11868] write(3, "1000", 4 [pid 11864] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11863] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1132, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11870] <... fcntl resumed>) = 0 [pid 11868] <... write resumed>) = 4 [pid 11863] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11870] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11868] close(3 [pid 5047] newfstatat(AT_FDCWD, "./563/binderfs", [pid 11863] <... clone3 resumed> => {parent_tid=[1161]}, 88) = 1161 [pid 11863] rt_sigprocmask(SIG_SETMASK, [], [pid 11870] <... futex resumed>) = 1 [pid 11868] <... close resumed>) = 0 [pid 11864] <... futex resumed>) = 0 [pid 11863] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3./strace-static-x86_64: Process 11871 attached [pid 11870] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11868] symlink("/dev/binderfs", "./binderfs" [pid 11864] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11863] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./563/binderfs" [pid 11870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11864] <... futex resumed>) = 0 [pid 11863] <... futex resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11870] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11868] <... symlink resumed>) = 0 [pid 11864] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11863] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 11870] <... openat resumed>) = 4 [pid 11864] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./559" [pid 11870] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11871] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11868] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11864] restart_syscall(<... resuming interrupted futex ...> [pid 5049] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 11868] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./563/cgroup", [pid 11868] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] mkdir("./560", 0777 [pid 11871] <... rseq resumed>) = 0 [pid 11868] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11864] <... restart_syscall resumed>) = ? [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11871] set_robust_list(0x7f504ff7f9a0, 24 [pid 11870] +++ killed by SIGIO +++ [pid 11868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11871] <... set_robust_list resumed>) = 0 [pid 11871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] newfstatat(3, "", [pid 5047] unlink("./563/cgroup" [pid 11868] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] getdents64(3, [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11868] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11871] open(".", O_RDONLY [pid 5047] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11868] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11871] <... open resumed>) = 3 [pid 11871] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11868] <... mprotect resumed>) = 0 [pid 11863] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./565/cgroup.cpu" [pid 5047] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 11868] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11864] +++ killed by SIGIO +++ [pid 5047] <... unlink resumed>) = 0 [pid 11868] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11871] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11863] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11873 attached ./strace-static-x86_64: Process 11872 attached [pid 11871] <... fcntl resumed>) = 0 [pid 11863] <... futex resumed>) = 0 [pid 5049] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./563/cgroup.net", [pid 11873] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11872] set_robust_list(0x555556ac56a0, 24 [pid 11871] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11868] <... clone3 resumed> => {parent_tid=[1102]}, 88) = 1102 [pid 11863] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11873] <... rseq resumed>) = 0 [pid 11872] <... set_robust_list resumed>) = 0 [pid 11868] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] newfstatat(AT_FDCWD, "./565/binderfs", [pid 5047] unlink("./563/cgroup.net" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1122 [pid 11873] set_robust_list(0x7f504ff7f9a0, 24 [pid 11872] chdir("./560" [pid 11871] <... futex resumed>) = 0 [pid 11868] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1157, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11873] <... set_robust_list resumed>) = 0 [pid 11872] <... chdir resumed>) = 0 [pid 11871] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11868] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11863] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./565/binderfs" [pid 11873] rt_sigprocmask(SIG_SETMASK, [], [pid 11872] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11871] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11868] <... futex resumed>) = 0 [pid 11863] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 11873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11872] <... prctl resumed>) = 0 [pid 11871] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11868] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11863] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11873] open(".", O_RDONLY [pid 11872] setpgid(0, 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11873] <... open resumed>) = 3 [pid 11872] <... setpgid resumed>) = 0 [pid 5049] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 11873] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11872] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11871] <... openat resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11873] <... futex resumed>) = 1 [pid 11871] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11868] <... futex resumed>) = 0 [pid 11863] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./565/cgroup", [pid 5047] <... close resumed>) = 0 [pid 11873] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11872] <... symlink resumed>) = 0 [pid 11868] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11872] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11871] +++ killed by SIGIO +++ [pid 11868] <... futex resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./563" [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./577/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./577/cgroup.cpu") = 0 [pid 5051] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11863] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./577/binderfs", [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1160, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11872] <... symlink resumed>) = 0 [pid 5049] unlink("./565/cgroup" [pid 5051] unlink("./577/binderfs" [pid 5050] <... restart_syscall resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11873] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] <... unlink resumed>) = 0 [pid 11868] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11873] <... fcntl resumed>) = 0 [pid 11872] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./564", 0777 [pid 11873] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11872] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./577/cgroup", [pid 5047] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11873] <... futex resumed>) = 1 [pid 11873] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11868] <... futex resumed>) = 0 [pid 11868] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11873] <... futex resumed>) = 0 [pid 11873] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11868] <... futex resumed>) = 1 [pid 11873] <... openat resumed>) = 4 [pid 11872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11868] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] unlink("./577/cgroup" [pid 5050] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11873] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11873] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 11872] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 11873] +++ killed by SIGIO +++ [pid 11872] write(3, "1000", 4 [pid 11868] +++ killed by SIGIO +++ [pid 5051] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11872] <... write resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5049] unlink("./565/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 11874 attached [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1130 [pid 11872] close(3) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11874] set_robust_list(0x555556ac56a0, 24 [pid 11872] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 11874] <... set_robust_list resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1101, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./549", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11874] chdir("./564") = 0 [pid 5051] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 5050] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11872] <... symlink resumed>) = 0 [pid 11874] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] openat(AT_FDCWD, "./549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11874] <... prctl resumed>) = 0 [pid 11872] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... openat resumed>) = 3 [pid 11874] setpgid(0, 0 [pid 11872] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11874] <... setpgid resumed>) = 0 [pid 11872] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11874] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11872] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./565/cgroup.net", [pid 5045] newfstatat(3, "", [pid 11872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./577/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11874] <... symlink resumed>) = 0 [pid 11872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 11874] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11872] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./565/cgroup.net" [pid 5045] getdents64(3, [pid 11874] <... symlink resumed>) = 0 [pid 11872] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11874] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11872] <... mprotect resumed>) = 0 [pid 5051] unlink("./577/cgroup.net" [pid 5050] unlink("./578/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 11874] <... symlink resumed>) = 0 [pid 11872] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] umount2("./549/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11874] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./549/cgroup.cpu", [pid 11872] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] getdents64(3, [pid 5050] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11875 attached [pid 11874] write(3, "1000", 4 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./549/cgroup.cpu" [pid 11875] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11874] <... write resumed>) = 4 [pid 11872] <... clone3 resumed> => {parent_tid=[1123]}, 88) = 1123 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 11875] <... rseq resumed>) = 0 [pid 11874] close(3 [pid 11872] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] close(3 [pid 5050] newfstatat(AT_FDCWD, "./578/binderfs", [pid 5049] <... close resumed>) = 0 [pid 5045] umount2("./549/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11875] set_robust_list(0x7f504ff7f9a0, 24 [pid 11872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11875] <... set_robust_list resumed>) = 0 [pid 11874] <... close resumed>) = 0 [pid 11872] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./565" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11875] rt_sigprocmask(SIG_SETMASK, [], [pid 11874] symlink("/dev/binderfs", "./binderfs" [pid 11875] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11872] <... futex resumed>) = 0 [pid 5051] rmdir("./577" [pid 5050] unlink("./578/binderfs" [pid 11875] open(".", O_RDONLY [pid 5049] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./549/binderfs", [pid 11874] <... symlink resumed>) = 0 [pid 11872] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./566", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11875] <... open resumed>) = 3 [pid 11874] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./549/binderfs" [pid 11875] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11874] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11875] <... futex resumed>) = 1 [pid 11872] <... futex resumed>) = 0 [pid 5051] mkdir("./578", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11875] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11874] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11872] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./578/cgroup", [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./549/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11875] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11874] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11872] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11875] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11872] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] unlink("./578/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11875] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 11876 attached [pid 11874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] newfstatat(AT_FDCWD, "./549/cgroup", [pid 11875] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11872] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11875] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11872] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11876] set_robust_list(0x555556ac56a0, 24 [pid 5050] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1134 [pid 11876] <... set_robust_list resumed>) = 0 [pid 11874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11875] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11872] <... futex resumed>) = 0 [pid 11875] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11872] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11876] chdir("./566" [pid 11875] <... openat resumed>) = 4 [pid 11874] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 11876] <... chdir resumed>) = 0 [pid 11874] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 11877 attached ) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11876] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11877] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1159 [pid 11874] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11872] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11876] <... prctl resumed>) = 0 [pid 5050] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 11877] <... set_robust_list resumed>) = 0 [pid 11876] setpgid(0, 0 [pid 11875] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11872] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11877] chdir("./578" [pid 11876] <... setpgid resumed>) = 0 [pid 11874] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11877] <... chdir resumed>) = 0 [pid 11875] <... futex resumed>) = ? [pid 11877] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11876] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11875] +++ killed by SIGIO +++ [pid 11874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11877] <... prctl resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11877] setpgid(0, 0 [pid 11876] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./578/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./549/cgroup" [pid 11877] <... setpgid resumed>) = 0 [pid 11876] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11874] <... clone3 resumed> => {parent_tid=[1131]}, 88) = 1131 [pid 11872] +++ killed by SIGIO +++ [pid 5050] unlink("./578/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 11876] <... symlink resumed>) = 0 [pid 11874] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./549/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./549/blkio.bfq.io_wait_time_recursive", [pid 11874] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11876] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11874] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11876] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./549/blkio.bfq.io_wait_time_recursive" [pid 11874] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 11877] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1122, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11878 attached [pid 11877] <... symlink resumed>) = 0 [pid 11876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... close resumed>) = 0 [pid 5045] umount2("./549/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11878] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11877] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11876] <... openat resumed>) = 3 [pid 5050] rmdir("./578" [pid 11877] <... symlink resumed>) = 0 [pid 11878] <... rseq resumed>) = 0 [pid 11877] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11876] write(3, "1000", 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11878] set_robust_list(0x7f504ff7f9a0, 24 [pid 11877] <... symlink resumed>) = 0 [pid 11876] <... write resumed>) = 4 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./549/cgroup.net", [pid 11876] close(3 [pid 5050] mkdir("./579", 0777 [pid 11878] <... set_robust_list resumed>) = 0 [pid 11877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11876] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11878] rt_sigprocmask(SIG_SETMASK, [], [pid 11876] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... mkdir resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./549/cgroup.net" [pid 11878] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11877] <... openat resumed>) = 3 [pid 11876] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... openat resumed>) = 3 [pid 11878] open(".", O_RDONLY [pid 11877] write(3, "1000", 4 [pid 11876] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11879 attached [pid 11878] <... open resumed>) = 3 [pid 11877] <... write resumed>) = 4 [pid 11876] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 11879] set_robust_list(0x555556ac56a0, 24 [pid 11878] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11877] close(3 [pid 11876] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11879] <... set_robust_list resumed>) = 0 [pid 11878] <... futex resumed>) = 1 [pid 11877] <... close resumed>) = 0 [pid 11876] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11874] <... futex resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1162 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] close(3 [pid 11879] chdir("./579" [pid 11878] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11877] symlink("/dev/binderfs", "./binderfs" [pid 11876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11874] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11879] <... chdir resumed>) = 0 [pid 11878] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11878] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11876] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11874] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./549" [pid 11878] <... fcntl resumed>) = 0 [pid 11876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] newfstatat(AT_FDCWD, "./560/cgroup.cpu", [pid 11879] <... prctl resumed>) = 0 [pid 11874] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11879] setpgid(0, 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11879] <... setpgid resumed>) = 0 [pid 11879] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11878] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11877] <... symlink resumed>) = 0 [pid 11876] <... mmap resumed>) = 0x7f504ff5f000 [pid 11874] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./550", 0777 [pid 11878] <... futex resumed>) = 0 [pid 11876] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11874] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11874] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./560/cgroup.cpu" [pid 11879] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11878] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5046] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11879] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5046] newfstatat(AT_FDCWD, "./560/binderfs", [pid 11878] <... openat resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11876] <... mprotect resumed>) = 0 [pid 11879] <... symlink resumed>) = 0 [pid 11877] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./560/binderfs" [pid 11877] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11877] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11879] symlink("/syzcgroup/net/syz4", "./cgroup.net") = 0 [pid 11877] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11877] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11877] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11876] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11879] write(3, "1000", 4) = 4 [pid 11879] close(3) = 0 [pid 11879] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11877] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11879] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11878] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11877] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11876] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11879] <... futex resumed>) = 0 [pid 11876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11874] <... futex resumed>) = ? [pid 5046] newfstatat(AT_FDCWD, "./560/cgroup", ./strace-static-x86_64: Process 11880 attached [pid 11879] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11877] <... mprotect resumed>) = 0 [pid 11880] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11879] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11880] <... rseq resumed>) = 0 [pid 11879] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] unlink("./560/cgroup" [pid 11880] set_robust_list(0x7f504ff7f9a0, 24 [pid 11876] <... clone3 resumed> => {parent_tid=[1135]}, 88) = 1135 [pid 11880] <... set_robust_list resumed>) = 0 [pid 11879] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11877] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11876] rt_sigprocmask(SIG_SETMASK, [], [pid 11877] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11876] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 11882 attached [pid 11880] rt_sigprocmask(SIG_SETMASK, [], [pid 11879] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11876] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11881 attached [pid 11882] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11880] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11876] <... futex resumed>) = 0 [pid 11882] <... rseq resumed>) = 0 [pid 11881] set_robust_list(0x555556ac56a0, 24 [pid 11880] open(".", O_RDONLY [pid 11879] <... mprotect resumed>) = 0 [pid 11877] <... clone3 resumed> => {parent_tid=[1160]}, 88) = 1160 [pid 11876] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1103 [pid 11882] set_robust_list(0x7f504ff7f9a0, 24 [pid 11881] <... set_robust_list resumed>) = 0 [pid 11880] <... open resumed>) = 3 [pid 11877] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 11877] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11882] <... set_robust_list resumed>) = 0 [pid 11881] chdir("./550" [pid 11880] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11879] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11877] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11877] <... futex resumed>) = 0 [pid 11882] rt_sigprocmask(SIG_SETMASK, [], [pid 11881] <... chdir resumed>) = 0 [pid 11880] <... futex resumed>) = 1 [pid 11879] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11877] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11876] <... futex resumed>) = 0 [pid 5046] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 11882] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11881] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11880] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11879] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11878] +++ killed by SIGIO +++ [pid 11876] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11874] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 11883 attached [pid 11882] open(".", O_RDONLY [pid 11881] <... prctl resumed>) = 0 [pid 11880] <... fcntl resumed>) = 0 [pid 11876] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11883] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11882] <... open resumed>) = 3 [pid 11881] setpgid(0, 0 [pid 11880] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11876] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11883] <... rseq resumed>) = 0 [pid 5046] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11883] set_robust_list(0x7f504ff7f9a0, 24 [pid 11876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11881] <... setpgid resumed>) = 0 [pid 11883] <... set_robust_list resumed>) = 0 [pid 11882] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11880] <... futex resumed>) = 0 [pid 11879] <... clone3 resumed> => {parent_tid=[1163]}, 88) = 1163 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1130, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11882] <... futex resumed>) = 1 [pid 11880] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11879] rt_sigprocmask(SIG_SETMASK, [], [pid 11877] <... futex resumed>) = 0 [pid 11876] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11883] rt_sigprocmask(SIG_SETMASK, [], [pid 11882] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11881] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11880] <... openat resumed>) = 4 [pid 11879] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11877] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11876] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11883] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11882] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11881] <... symlink resumed>) = 0 [pid 11876] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11883] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11882] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11881] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11879] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11877] <... futex resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./560/cgroup.net", [pid 11883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11882] <... fcntl resumed>) = 0 [pid 11881] <... symlink resumed>) = 0 [pid 11879] <... futex resumed>) = 0 [pid 11877] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11883] open(".", O_RDONLY [pid 11882] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11881] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11879] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11882] <... futex resumed>) = 0 [pid 5046] unlink("./560/cgroup.net" [pid 11882] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11877] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 11883] <... open resumed>) = 3 [pid 11882] <... openat resumed>) = 4 [pid 11881] <... symlink resumed>) = 0 [pid 11877] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11883] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11882] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11880] +++ killed by SIGIO +++ [pid 11877] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11876] +++ killed by SIGIO +++ [pid 5047] getdents64(3, [pid 11883] <... futex resumed>) = 1 [pid 11881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11879] <... futex resumed>) = 0 [pid 5046] getdents64(3, [pid 11883] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11881] <... openat resumed>) = 3 [pid 11879] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1134, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11879] <... futex resumed>) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5046] close(3 [pid 11883] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11881] write(3, "1000", 4 [pid 11879] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... restart_syscall resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11883] <... fcntl resumed>) = 0 [pid 11881] <... write resumed>) = 4 [pid 11881] close(3 [pid 11883] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11881] <... close resumed>) = 0 [pid 5046] rmdir("./560" [pid 11883] <... futex resumed>) = 1 [pid 11882] +++ killed by SIGIO +++ [pid 11881] symlink("/dev/binderfs", "./binderfs" [pid 11879] <... futex resumed>) = 0 [pid 11877] +++ killed by SIGIO +++ [pid 5049] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11883] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11881] <... symlink resumed>) = 0 [pid 11879] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1159, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 11883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11881] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11879] <... futex resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] newfstatat(AT_FDCWD, "./564/cgroup.cpu", [pid 11883] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11881] <... futex resumed>) = 0 [pid 11879] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] mkdir("./561", 0777 [pid 11881] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./564/cgroup.cpu" [pid 11881] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(3, "", [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11881] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./564/binderfs", [pid 11881] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./564/binderfs" [pid 11883] <... openat resumed>) = 4 [pid 11881] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11881] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] newfstatat(AT_FDCWD, "./564/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./564/cgroup") = 0 [pid 5047] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./564/blkio.bfq.io_wait_time_recursive" [pid 11881] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(3, "", [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./564/cgroup.net", ./strace-static-x86_64: Process 11884 attached [pid 11883] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11881] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11884] set_robust_list(0x555556ac56a0, 24 [pid 5047] unlink("./564/cgroup.net" [pid 11881] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11879] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11884] <... set_robust_list resumed>) = 0 [pid 11884] chdir("./561" [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11884] <... chdir resumed>) = 0 [pid 5047] close(3 [pid 11884] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... close resumed>) = 0 [pid 11884] <... prctl resumed>) = 0 [pid 11884] setpgid(0, 0 [pid 5047] rmdir("./564" [pid 11884] <... setpgid resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11884] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] mkdir("./565", 0777 [pid 5049] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 11881] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11881] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] unlink("./566/cgroup.cpu" [pid 11884] <... symlink resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11884] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11885 attached [pid 5049] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11885] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11883] +++ killed by SIGIO +++ [pid 11881] <... clone3 resumed> => {parent_tid=[1104]}, 88) = 1104 [pid 11879] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1124 [pid 11884] <... symlink resumed>) = 0 [pid 11881] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./566/binderfs", ./strace-static-x86_64: Process 11886 attached [pid 11885] <... rseq resumed>) = 0 [pid 11884] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11881] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11886] set_robust_list(0x555556ac56a0, 24 [pid 11885] set_robust_list(0x7f504ff7f9a0, 24 [pid 11881] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1162, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11886] <... set_robust_list resumed>) = 0 [pid 11885] <... set_robust_list resumed>) = 0 [pid 11881] <... futex resumed>) = 0 [pid 5051] unlink("./578/cgroup.cpu" [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5049] unlink("./566/binderfs" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1132 [pid 11886] chdir("./565" [pid 11885] rt_sigprocmask(SIG_SETMASK, [], [pid 11884] <... symlink resumed>) = 0 [pid 11885] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11885] open(".", O_RDONLY [pid 11881] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 11886] <... chdir resumed>) = 0 [pid 11885] <... open resumed>) = 3 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11886] <... prctl resumed>) = 0 [pid 11886] setpgid(0, 0) = 0 [pid 11884] <... openat resumed>) = 3 [pid 11886] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11885] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11884] write(3, "1000", 4 [pid 5051] newfstatat(AT_FDCWD, "./578/binderfs", [pid 5050] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11884] <... write resumed>) = 4 [pid 5049] newfstatat(AT_FDCWD, "./566/cgroup", [pid 11886] <... symlink resumed>) = 0 [pid 11884] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11884] <... close resumed>) = 0 [pid 5051] unlink("./578/binderfs" [pid 5049] unlink("./566/cgroup" [pid 11886] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11885] <... futex resumed>) = 1 [pid 11881] <... futex resumed>) = 0 [pid 11886] <... symlink resumed>) = 0 [pid 11885] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11884] symlink("/dev/binderfs", "./binderfs" [pid 11881] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 11885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11881] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 11885] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11881] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11886] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11885] <... fcntl resumed>) = 0 [pid 11884] <... symlink resumed>) = 0 [pid 5049] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11885] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... openat resumed>) = 3 [pid 11885] <... futex resumed>) = 1 [pid 11885] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11881] <... futex resumed>) = 0 [pid 11881] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11884] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 5050] newfstatat(3, "", [pid 11884] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11886] <... symlink resumed>) = 0 [pid 11885] <... futex resumed>) = 0 [pid 11884] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11881] <... futex resumed>) = 1 [pid 5051] newfstatat(AT_FDCWD, "./578/cgroup", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11885] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11884] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11881] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11886] <... openat resumed>) = 3 [pid 11884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5049] unlink("./566/blkio.bfq.io_wait_time_recursive" [pid 11884] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11886] write(3, "1000", 4 [pid 11885] <... openat resumed>) = 4 [pid 11884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... unlink resumed>) = 0 [pid 11881] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11886] <... write resumed>) = 4 [pid 11885] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11884] <... mmap resumed>) = 0x7f504ff5f000 [pid 11881] restart_syscall(<... resuming interrupted futex ...> [pid 5051] unlink("./578/cgroup" [pid 5050] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11886] close(3 [pid 11884] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11881] <... restart_syscall resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11886] <... close resumed>) = 0 [pid 11884] <... mprotect resumed>) = 0 [pid 5051] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./579/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11886] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11884] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./566/cgroup.net", [pid 11884] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./579/cgroup.cpu" [pid 11886] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 11886] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11886] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11886] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ./strace-static-x86_64: Process 11887 attached [pid 11886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11884] <... clone3 resumed> => {parent_tid=[1125]}, 88) = 1125 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./566/cgroup.net" [pid 11887] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11886] <... mmap resumed>) = 0x7f504ff5f000 [pid 11884] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./579/binderfs", [pid 11887] <... rseq resumed>) = 0 [pid 11886] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11884] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11887] set_robust_list(0x7f504ff7f9a0, 24 [pid 11886] <... mprotect resumed>) = 0 [pid 11884] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./578/cgroup.net", [pid 5050] unlink("./579/binderfs" [pid 11887] <... set_robust_list resumed>) = 0 [pid 11886] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11885] +++ killed by SIGIO +++ [pid 11884] <... futex resumed>) = 0 [pid 11881] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 11887] rt_sigprocmask(SIG_SETMASK, [], [pid 11884] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11887] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11887] open(".", O_RDONLY [pid 5050] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] close(3 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1103, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11887] <... open resumed>) = 3 [pid 5051] unlink("./578/cgroup.net" [pid 11887] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... close resumed>) = 0 [pid 11887] <... futex resumed>) = 1 [pid 11886] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11884] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./579/cgroup", [pid 11886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11887] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11884] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./566"./strace-static-x86_64: Process 11888 attached [pid 11887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11884] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] unlink("./579/cgroup" [pid 5049] <... rmdir resumed>) = 0 [pid 11887] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11884] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./550", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11888] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11886] <... clone3 resumed> => {parent_tid=[1133]}, 88) = 1133 [pid 5050] <... unlink resumed>) = 0 [pid 11888] <... rseq resumed>) = 0 [pid 11887] <... fcntl resumed>) = 0 [pid 11886] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11887] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] mkdir("./567", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11887] <... futex resumed>) = 1 [pid 11884] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11887] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", [pid 11888] set_robust_list(0x7f504ff7f9a0, 24 [pid 11886] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11888] <... set_robust_list resumed>) = 0 [pid 11886] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5045] <... openat resumed>) = 3 [pid 11888] rt_sigprocmask(SIG_SETMASK, [], [pid 11887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11886] <... futex resumed>) = 0 [pid 11884] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11888] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11886] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./578" [pid 11888] open(".", O_RDONLY [pid 5051] <... rmdir resumed>) = 0 [pid 11888] <... open resumed>) = 3 [pid 11888] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11887] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5049] <... mkdir resumed>) = 0 [pid 11884] <... futex resumed>) = 0 [pid 5050] unlink("./579/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(3, "", [pid 11888] <... futex resumed>) = 1 [pid 11886] <... futex resumed>) = 0 [pid 11888] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11886] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./579", 0777 [pid 11888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11887] <... openat resumed>) = 4 [pid 11886] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11888] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] <... unlink resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11888] <... fcntl resumed>) = 0 [pid 11886] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11888] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11886] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11888] <... futex resumed>) = 0 [pid 11886] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11888] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11886] <... futex resumed>) = 0 [pid 11884] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] newfstatat(AT_FDCWD, "./579/cgroup.net", [pid 11888] <... openat resumed>) = 4 [pid 11887] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11890 attached [pid 11887] <... futex resumed>) = ? [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./550/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11887] +++ killed by SIGIO +++ [pid 11886] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11888] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11889 attached [pid 11889] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11889] chdir("./567") = 0 [pid 5050] unlink("./579/cgroup.net" [pid 11889] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11888] <... futex resumed>) = 0 [pid 11889] <... prctl resumed>) = 0 [pid 11888] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11889] setpgid(0, 0) = 0 [pid 11889] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 11888] <... futex resumed>) = ? [pid 5050] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11888] +++ killed by SIGIO +++ [pid 11890] set_robust_list(0x555556ac56a0, 24 [pid 11889] <... symlink resumed>) = 0 [pid 11889] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1161 [pid 11889] <... symlink resumed>) = 0 [pid 11889] symlink("/syzcgroup/net/syz3", "./cgroup.net") = 0 [pid 11889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] newfstatat(AT_FDCWD, "./550/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./550/cgroup.cpu" [pid 11889] <... openat resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 11889] write(3, "1000", 4) = 4 [pid 11889] close(3) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] umount2("./550/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] rmdir("./579" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11889] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11889] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./550/binderfs", [pid 11889] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11889] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11889] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11889] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11889] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11889] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11891 attached => {parent_tid=[1137]}, 88) = 1137 [pid 11891] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11889] rt_sigprocmask(SIG_SETMASK, [], [pid 11891] <... rseq resumed>) = 0 [pid 11889] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11891] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11889] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11889] <... futex resumed>) = 0 [pid 11891] open(".", O_RDONLY [pid 11889] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11891] <... open resumed>) = 3 [pid 11890] <... set_robust_list resumed>) = 0 [pid 11891] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11889] <... futex resumed>) = 0 [pid 11889] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11891] <... futex resumed>) = 1 [pid 11890] chdir("./579" [pid 11889] <... futex resumed>) = 0 [pid 11891] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11889] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11891] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11889] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11891] <... futex resumed>) = 0 [pid 11891] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11889] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11891] <... openat resumed>) = 4 [pid 11890] <... chdir resumed>) = 0 [pid 5050] mkdir("./580", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11889] <... futex resumed>) = 0 [pid 11889] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11891] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11890] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11886] +++ killed by SIGIO +++ [pid 11884] +++ killed by SIGIO +++ [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1136 [pid 5045] unlink("./550/binderfs" [pid 11890] <... prctl resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1124, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11891] <... futex resumed>) = ? [pid 5045] <... unlink resumed>) = 0 [pid 11891] +++ killed by SIGIO +++ [pid 5045] umount2("./550/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11892 attached [pid 11890] setpgid(0, 0 [pid 5046] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11892] set_robust_list(0x555556ac56a0, 24 [pid 11890] <... setpgid resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1164 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1132, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./550/cgroup", [pid 11892] <... set_robust_list resumed>) = 0 [pid 11890] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11889] +++ killed by SIGIO +++ [pid 5047] <... restart_syscall resumed>) = 0 [pid 5045] unlink("./550/cgroup" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1136, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] <... openat resumed>) = 3 [pid 11892] chdir("./580" [pid 5046] newfstatat(3, "", [pid 5047] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11890] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./550/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11890] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11892] <... chdir resumed>) = 0 [pid 5049] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./550/blkio.bfq.io_wait_time_recursive", [pid 11892] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] newfstatat(3, "", [pid 5049] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11892] <... prctl resumed>) = 0 [pid 5049] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./567/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./567/cgroup.cpu") = 0 [pid 5049] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./567/binderfs", [pid 11890] <... symlink resumed>) = 0 [pid 11892] setpgid(0, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5046] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./550/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./567/binderfs") = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 5049] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11890] symlink("/syzcgroup/net/syz5", "./cgroup.net") = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./567/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11890] write(3, "1000", 4) = 4 [pid 5049] unlink("./567/cgroup" [pid 11890] close(3) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11890] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5049] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11890] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 11890] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11890] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5049] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 11890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... unlink resumed>) = 0 [pid 11890] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] unlink("./561/cgroup.cpu" [pid 5049] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11890] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11890] <... mprotect resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./567/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11890] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] unlink("./567/cgroup.net" [pid 11892] <... setpgid resumed>) = 0 [pid 5046] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./550/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11890] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] getdents64(3, ./strace-static-x86_64: Process 11893 attached [pid 11893] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11893] <... rseq resumed>) = 0 [pid 11890] <... clone3 resumed> => {parent_tid=[1162]}, 88) = 1162 [pid 11893] set_robust_list(0x7f504ff7f9a0, 24 [pid 11890] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] close(3 [pid 11893] <... set_robust_list resumed>) = 0 [pid 11890] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... close resumed>) = 0 [pid 11893] rt_sigprocmask(SIG_SETMASK, [], [pid 11890] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11893] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11890] <... futex resumed>) = 0 [pid 5049] rmdir("./567" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11893] open(".", O_RDONLY [pid 11892] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5047] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11893] <... open resumed>) = 3 [pid 11892] <... symlink resumed>) = 0 [pid 11890] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./561/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./550/cgroup.net", [pid 11893] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11890] <... futex resumed>) = 0 [pid 11893] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11890] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11893] <... fcntl resumed>) = 0 [pid 11890] <... futex resumed>) = 0 [pid 11890] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] mkdir("./568", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11893] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11892] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11893] <... futex resumed>) = 0 [pid 11890] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./550/cgroup.net" [pid 11893] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11890] <... futex resumed>) = 0 [pid 11893] <... openat resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./561/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 11892] <... symlink resumed>) = 0 [pid 5047] unlink("./565/cgroup.cpu" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11893] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11892] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11890] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 5047] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11892] <... symlink resumed>) = 0 [pid 11893] <... futex resumed>) = ? [pid 5047] newfstatat(AT_FDCWD, "./565/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./561/cgroup", [pid 5045] <... close resumed>) = 0 ./strace-static-x86_64: Process 11894 attached [pid 11892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./550" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1138 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5047] unlink("./565/binderfs" [pid 5046] unlink("./561/cgroup" [pid 11894] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5047] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./551", 0777 [pid 5046] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11894] <... set_robust_list resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./565/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11894] chdir("./568" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 11894] <... chdir resumed>) = 0 [pid 11892] <... openat resumed>) = 3 [pid 5047] unlink("./565/cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11894] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./561/blkio.bfq.io_wait_time_recursive") = 0 [pid 11894] <... prctl resumed>) = 0 [pid 11894] setpgid(0, 0 [pid 11893] +++ killed by SIGIO +++ [pid 11892] write(3, "1000", 4 [pid 11890] +++ killed by SIGIO +++ [pid 11894] <... setpgid resumed>) = 0 [pid 11894] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11892] <... write resumed>) = 4 ./strace-static-x86_64: Process 11895 attached [pid 11894] <... symlink resumed>) = 0 [pid 11892] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1161, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1105 [pid 11892] <... close resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 11894] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11892] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... restart_syscall resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 11895] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11894] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11895] chdir("./551" [pid 11894] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11892] <... symlink resumed>) = 0 [pid 5047] unlink("./565/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./561/cgroup.net" [pid 11895] <... chdir resumed>) = 0 [pid 11895] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11892] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11895] <... prctl resumed>) = 0 [pid 11895] setpgid(0, 0 [pid 11892] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11895] <... setpgid resumed>) = 0 [pid 11892] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11894] <... symlink resumed>) = 0 [pid 11892] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11895] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", [pid 11892] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11895] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 11894] <... openat resumed>) = 3 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11895] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11895] <... symlink resumed>) = 0 [pid 11894] write(3, "1000", 4 [pid 11892] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11894] <... write resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./579/cgroup.cpu", [pid 11895] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11895] <... symlink resumed>) = 0 [pid 11894] close(3 [pid 11892] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] newfstatat(AT_FDCWD, "./565/cgroup.net", [pid 5046] close(3 [pid 11894] <... close resumed>) = 0 [pid 5051] unlink("./579/cgroup.cpu" [pid 11892] <... mprotect resumed>) = 0 [pid 11895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11894] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... close resumed>) = 0 [pid 11895] <... openat resumed>) = 3 [pid 11892] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./579/binderfs", [pid 11895] write(3, "1000", 4 [pid 11894] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./565/cgroup.net" [pid 5046] rmdir("./561" [pid 11892] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11895] <... write resumed>) = 4 [pid 5051] unlink("./579/binderfs" [pid 11895] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 11892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... unlink resumed>) = 0 [pid 11895] <... close resumed>) = 0 [pid 11895] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11895] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./579/cgroup", [pid 5046] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11896 attached [pid 11895] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 11896] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11895] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11894] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11892] <... clone3 resumed> => {parent_tid=[1165]}, 88) = 1165 [pid 5051] unlink("./579/cgroup" [pid 5046] mkdir("./562", 0777 [pid 11896] <... rseq resumed>) = 0 [pid 11895] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11894] <... futex resumed>) = 0 [pid 11892] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11896] set_robust_list(0x7f504ff7f9a0, 24 [pid 11895] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 11896] <... set_robust_list resumed>) = 0 [pid 11895] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11896] rt_sigprocmask(SIG_SETMASK, [], [pid 11895] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11896] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11895] <... mmap resumed>) = 0x7f504ff5f000 [pid 11892] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", [pid 5047] <... close resumed>) = 0 [pid 11896] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11892] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11894] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11896] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11895] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11894] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11892] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./565" [pid 5046] <... mkdir resumed>) = 0 [pid 11896] open(".", O_RDONLY [pid 11895] <... mprotect resumed>) = 0 [pid 11895] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] unlink("./579/blkio.bfq.io_wait_time_recursive") = 0 [pid 11895] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11895] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11896] <... open resumed>) = 3 [pid 5051] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11897 attached [pid 11895] <... clone3 resumed> => {parent_tid=[1106]}, 88) = 1106 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11897] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11896] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11895] rt_sigprocmask(SIG_SETMASK, [], [pid 11897] <... rseq resumed>) = 0 [pid 11896] <... futex resumed>) = 0 [pid 11895] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./579/cgroup.net", [pid 11897] set_robust_list(0x7f504ff7f9a0, 24 [pid 11896] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11895] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11898 attached [pid 11897] <... set_robust_list resumed>) = 0 [pid 11895] <... futex resumed>) = 0 [pid 11894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11892] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] mkdir("./566", 0777 [pid 11898] set_robust_list(0x555556ac56a0, 24 [pid 11897] rt_sigprocmask(SIG_SETMASK, [], [pid 11895] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11894] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] unlink("./579/cgroup.net" [pid 11898] <... set_robust_list resumed>) = 0 [pid 11897] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11898] chdir("./562" [pid 11897] open(".", O_RDONLY [pid 5047] <... mkdir resumed>) = 0 [pid 11894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11892] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11892] <... futex resumed>) = 1 [pid 11898] <... chdir resumed>) = 0 [pid 11897] <... open resumed>) = 3 [pid 11896] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11898] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11896] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11898] <... prctl resumed>) = 0 [pid 11897] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11896] <... fcntl resumed>) = 0 [pid 5051] close(3 [pid 11898] setpgid(0, 0 [pid 11897] <... futex resumed>) = 1 [pid 11896] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11895] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 11897] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11895] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11898] <... setpgid resumed>) = 0 [pid 11897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11896] <... futex resumed>) = 0 [pid 11895] <... futex resumed>) = 0 [pid 11894] <... mmap resumed>) = 0x7f504ff5f000 [pid 11892] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./579" [pid 11898] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11897] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11896] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11895] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11894] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11899 attached [pid 11897] <... fcntl resumed>) = 0 [pid 11899] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11899] chdir("./566" [pid 11897] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11894] <... mprotect resumed>) = 0 [pid 11892] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1134 [pid 11899] <... chdir resumed>) = 0 [pid 11898] <... symlink resumed>) = 0 [pid 11897] <... futex resumed>) = 1 [pid 11896] <... futex resumed>) = 0 [pid 11895] <... futex resumed>) = 0 [pid 11894] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11892] <... futex resumed>) = 1 [pid 5051] mkdir("./580", 0777 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1126 [pid 11899] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11898] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11897] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11896] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11895] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11894] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11892] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11899] <... prctl resumed>) = 0 [pid 11898] <... symlink resumed>) = 0 [pid 11897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11896] <... openat resumed>) = 4 [pid 11895] <... futex resumed>) = 0 [pid 11894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11892] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11900 attached [pid 11899] setpgid(0, 0 [pid 11898] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11897] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11896] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11895] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11892] restart_syscall(<... resuming interrupted futex ...> [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11899] <... setpgid resumed>) = 0 [pid 11898] <... symlink resumed>) = 0 [pid 11897] <... openat resumed>) = 4 [pid 11895] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11894] <... clone3 resumed> => {parent_tid=[1139]}, 88) = 1139 [pid 11900] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11892] <... restart_syscall resumed>) = ? ./strace-static-x86_64: Process 11901 attached [pid 11900] <... rseq resumed>) = 0 [pid 11899] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11897] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11896] +++ killed by SIGIO +++ [pid 11895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11894] rt_sigprocmask(SIG_SETMASK, [], [pid 11901] set_robust_list(0x555556ac56a0, 24 [pid 11900] set_robust_list(0x7f504ff7f9a0, 24 [pid 11899] <... symlink resumed>) = 0 [pid 11898] <... openat resumed>) = 3 [pid 11894] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11892] +++ killed by SIGIO +++ [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1163 [pid 11901] <... set_robust_list resumed>) = 0 [pid 11900] <... set_robust_list resumed>) = 0 [pid 11899] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11894] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1164, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11898] write(3, "1000", 4 [pid 11897] +++ killed by SIGIO +++ [pid 11895] +++ killed by SIGIO +++ [pid 11901] chdir("./580" [pid 11900] rt_sigprocmask(SIG_SETMASK, [], [pid 11899] <... symlink resumed>) = 0 [pid 11898] <... write resumed>) = 4 [pid 11894] <... futex resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1105, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11901] <... chdir resumed>) = 0 [pid 11900] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11898] close(3 [pid 11901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11901] setpgid(0, 0) = 0 [pid 11900] open(".", O_RDONLY [pid 11899] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11901] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11898] <... close resumed>) = 0 [pid 11894] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11900] <... open resumed>) = 3 [pid 11899] <... symlink resumed>) = 0 [pid 11898] symlink("/dev/binderfs", "./binderfs" [pid 11900] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./551", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11901] <... symlink resumed>) = 0 [pid 11901] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11900] <... futex resumed>) = 1 [pid 11894] <... futex resumed>) = 0 [pid 11900] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11894] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11900] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11900] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11899] <... openat resumed>) = 3 [pid 11894] <... futex resumed>) = 0 [pid 11900] <... fcntl resumed>) = 0 [pid 11898] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11894] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11900] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] <... symlink resumed>) = 0 [pid 11900] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] openat(AT_FDCWD, "./551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11894] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11900] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11894] <... futex resumed>) = 0 [pid 11900] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11894] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11901] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11898] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 11899] write(3, "1000", 4) = 4 [pid 11899] close(3) = 0 [pid 11899] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(3, "", [pid 11899] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11901] <... symlink resumed>) = 0 [pid 11899] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11898] <... futex resumed>) = 0 [pid 11899] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11899] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11898] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... openat resumed>) = 3 [pid 11900] <... openat resumed>) = 4 [pid 5045] getdents64(3, [pid 11899] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11898] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] newfstatat(3, "", [pid 11900] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11899] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11898] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11899] <... mmap resumed>) = 0x7f504ff5f000 [pid 11898] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11894] <... futex resumed>) = ? [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11900] +++ killed by SIGIO +++ [pid 11899] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] umount2("./551/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11901] <... openat resumed>) = 3 [pid 11899] <... mprotect resumed>) = 0 [pid 11898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] getdents64(3, [pid 11901] write(3, "1000", 4 [pid 11899] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11898] <... mmap resumed>) = 0x7f504ff5f000 [pid 11894] +++ killed by SIGIO +++ [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11898] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11901] <... write resumed>) = 4 [pid 11899] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11901] close(3 [pid 11899] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11902 attached [pid 11901] <... close resumed>) = 0 [pid 11898] <... mprotect resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./551/cgroup.cpu", [pid 11902] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11901] symlink("/dev/binderfs", "./binderfs" [pid 11899] <... clone3 resumed> => {parent_tid=[1135]}, 88) = 1135 [pid 5050] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1138, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11902] <... rseq resumed>) = 0 [pid 11901] <... symlink resumed>) = 0 [pid 11899] rt_sigprocmask(SIG_SETMASK, [], [pid 11898] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11898] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./551/cgroup.cpu" [pid 11898] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11902] set_robust_list(0x7f504ff7f9a0, 24 [pid 11901] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11899] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11902] <... set_robust_list resumed>) = 0 [pid 11899] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11902] rt_sigprocmask(SIG_SETMASK, [], [pid 11901] <... futex resumed>) = 0 [pid 11899] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11903 attached [pid 11902] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11901] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11899] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./580/cgroup.cpu", [pid 5049] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 11903] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11902] open(".", O_RDONLY [pid 11901] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11898] <... clone3 resumed> => {parent_tid=[1127]}, 88) = 1127 [pid 11903] <... rseq resumed>) = 0 [pid 11902] <... open resumed>) = 3 [pid 11903] set_robust_list(0x7f504ff7f9a0, 24 [pid 11901] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11903] <... set_robust_list resumed>) = 0 [pid 11902] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11901] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5045] umount2("./551/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11903] rt_sigprocmask(SIG_SETMASK, [], [pid 11902] <... futex resumed>) = 1 [pid 11901] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11899] <... futex resumed>) = 0 [pid 11898] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11903] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11902] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11903] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] <... mmap resumed>) = 0x7f504ff5f000 [pid 11899] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11898] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./580/cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(AT_FDCWD, "./551/binderfs", [pid 11902] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11901] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11899] <... futex resumed>) = 0 [pid 11898] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11902] <... fcntl resumed>) = 0 [pid 11899] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11902] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 11898] <... futex resumed>) = 1 [pid 11903] <... futex resumed>) = 0 [pid 11902] <... futex resumed>) = 0 [pid 11901] <... mprotect resumed>) = 0 [pid 11899] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11898] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./551/binderfs" [pid 11903] open(".", O_RDONLY [pid 11902] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11901] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11899] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11903] <... open resumed>) = 3 [pid 11902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11899] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11902] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11901] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./580/binderfs", ./strace-static-x86_64: Process 11904 attached [pid 11903] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11902] <... openat resumed>) = 4 [pid 11899] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11904] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11902] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11901] <... clone3 resumed> => {parent_tid=[1164]}, 88) = 1164 [pid 11904] <... rseq resumed>) = 0 [pid 11903] <... futex resumed>) = 1 [pid 11901] rt_sigprocmask(SIG_SETMASK, [], [pid 11899] <... futex resumed>) = ? [pid 11898] <... futex resumed>) = 0 [pid 5050] unlink("./580/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./551/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11904] set_robust_list(0x7f504ff7f9a0, 24 [pid 11903] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11902] +++ killed by SIGIO +++ [pid 11901] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11898] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11904] <... set_robust_list resumed>) = 0 [pid 11903] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11898] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./568/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11904] rt_sigprocmask(SIG_SETMASK, [], [pid 11903] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11901] <... futex resumed>) = 0 [pid 11898] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11904] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11903] <... fcntl resumed>) = 0 [pid 11901] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./551/cgroup", [pid 11904] open(".", O_RDONLY [pid 11903] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11899] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./568/cgroup.cpu" [pid 11904] <... open resumed>) = 3 [pid 11903] <... futex resumed>) = 1 [pid 11898] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./580/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11903] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11898] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1134, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11903] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11903] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11898] <... futex resumed>) = 0 [pid 11904] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11901] <... futex resumed>) = 0 [pid 11904] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11901] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] <... futex resumed>) = 0 [pid 11904] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11901] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11904] <... fcntl resumed>) = 0 [pid 11904] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11903] <... openat resumed>) = 4 [pid 11901] <... futex resumed>) = 0 [pid 11904] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11901] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11901] <... futex resumed>) = 0 [pid 11904] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11901] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11904] <... openat resumed>) = 4 [pid 11901] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11901] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] unlink("./551/cgroup" [pid 11903] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11898] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./580/cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./551/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11903] <... futex resumed>) = ? [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 5047] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./551/blkio.bfq.io_wait_time_recursive", [pid 11904] +++ killed by SIGIO +++ [pid 11901] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1163, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] newfstatat(AT_FDCWD, "./568/binderfs", [pid 5047] <... openat resumed>) = 3 [pid 5045] unlink("./551/blkio.bfq.io_wait_time_recursive" [pid 5050] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] unlink("./568/binderfs") = 0 [pid 5050] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./551/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11903] +++ killed by SIGIO +++ [pid 11898] +++ killed by SIGIO +++ [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1126, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 5049] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./551/cgroup.net", [pid 5051] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./551/cgroup.net" [pid 5046] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... openat resumed>) = 3 [pid 5046] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./568/cgroup", [pid 5051] newfstatat(3, "", [pid 5050] unlink("./580/cgroup.net" [pid 5047] unlink("./566/cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 5045] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, [pid 5049] unlink("./568/cgroup" [pid 5046] getdents64(3, [pid 5047] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./551" [pid 5051] getdents64(3, [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] close(3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./566/binderfs", [pid 5046] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./562/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./562/cgroup.cpu" [pid 5045] mkdir("./552", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 5051] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] rmdir("./580" [pid 5049] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 5047] unlink("./566/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./562/binderfs", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11905 attached [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... rmdir resumed>) = 0 [pid 5049] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11905] set_robust_list(0x555556ac56a0, 24 [pid 5050] mkdir("./581", 0777 [pid 5051] newfstatat(AT_FDCWD, "./580/cgroup.cpu", [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./562/binderfs" [pid 11905] <... set_robust_list resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1107 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11905] chdir("./552" [pid 5046] <... unlink resumed>) = 0 [pid 5051] unlink("./580/cgroup.cpu" [pid 5047] newfstatat(AT_FDCWD, "./566/cgroup", [pid 11905] <... chdir resumed>) = 0 [pid 11905] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11905] <... prctl resumed>) = 0 [pid 11905] setpgid(0, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./566/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11906 attached [pid 11905] <... setpgid resumed>) = 0 [pid 11906] set_robust_list(0x555556ac56a0, 24 [pid 11905] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1166 [pid 5049] newfstatat(AT_FDCWD, "./568/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./562/cgroup", [pid 11906] <... set_robust_list resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11906] chdir("./581" [pid 11905] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./580/binderfs", [pid 5049] unlink("./568/cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./562/cgroup" [pid 11905] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 5051] unlink("./580/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 11905] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11905] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11906] <... chdir resumed>) = 0 [pid 5051] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./566/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11906] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] getdents64(3, [pid 11905] <... openat resumed>) = 3 [pid 11905] write(3, "1000", 4 [pid 5047] <... unlink resumed>) = 0 [pid 11906] <... prctl resumed>) = 0 [pid 11905] <... write resumed>) = 4 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11906] setpgid(0, 0 [pid 11905] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 5049] close(3 [pid 11905] <... close resumed>) = 0 [pid 11905] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11905] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11905] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11905] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11906] <... setpgid resumed>) = 0 [pid 11905] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./580/cgroup", [pid 5049] rmdir("./568" [pid 5047] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11905] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11905] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./580/cgroup" [pid 5047] newfstatat(AT_FDCWD, "./566/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 11905] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11907 attached [pid 11907] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11905] <... clone3 resumed> => {parent_tid=[1108]}, 88) = 1108 [pid 11907] <... rseq resumed>) = 0 [pid 11905] rt_sigprocmask(SIG_SETMASK, [], [pid 11907] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] unlink("./566/cgroup.net" [pid 11907] <... set_robust_list resumed>) = 0 [pid 11905] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11907] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11905] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11907] open(".", O_RDONLY [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11907] <... open resumed>) = 3 [pid 11906] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11905] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 11907] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11905] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11907] <... futex resumed>) = 0 [pid 11906] <... symlink resumed>) = 0 [pid 11905] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./569", 0777 [pid 5047] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11907] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11905] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./562/cgroup.net" [pid 11907] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11905] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 5047] close(3 [pid 11907] <... fcntl resumed>) = 0 [pid 11905] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 11907] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11905] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11907] <... futex resumed>) = 0 [pid 11905] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11907] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11905] <... futex resumed>) = 0 [pid 11905] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11907] <... openat resumed>) = 4 [pid 5049] <... mkdir resumed>) = 0 [pid 11905] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11906] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11905] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 5047] <... close resumed>) = 0 [pid 5046] getdents64(3, [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11906] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] rmdir("./566" [pid 5046] close(3 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11906] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11906] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./567", 0777 [pid 5046] rmdir("./562") = 0 ./strace-static-x86_64: Process 11908 attached [pid 5051] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 11908] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11908] chdir("./569" [pid 5047] <... mkdir resumed>) = 0 [pid 11908] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./580/cgroup.net" [pid 5046] mkdir("./563", 0777 [pid 11906] <... openat resumed>) = 3 [pid 11908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11908] setpgid(0, 0) = 0 [pid 11908] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11907] +++ killed by SIGIO +++ [pid 11905] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5046] <... mkdir resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11906] write(3, "1000", 4 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] close(3 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1140 [pid 11908] <... symlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1107, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] umount2("./552", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11908] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 5045] openat(AT_FDCWD, "./552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, [pid 5051] <... close resumed>) = 0 ./strace-static-x86_64: Process 11909 attached [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11909] set_robust_list(0x555556ac56a0, 24 [pid 11908] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11906] <... write resumed>) = 4 [pid 5051] rmdir("./580" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1136 [pid 5045] umount2("./552/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11909] <... set_robust_list resumed>) = 0 [pid 11908] <... symlink resumed>) = 0 [pid 11906] close(3 [pid 5051] <... rmdir resumed>) = 0 [pid 11909] chdir("./567" [pid 11908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11906] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11906] symlink("/dev/binderfs", "./binderfs" [pid 5045] newfstatat(AT_FDCWD, "./552/cgroup.cpu", ./strace-static-x86_64: Process 11910 attached [pid 11909] <... chdir resumed>) = 0 [pid 11908] <... openat resumed>) = 3 [pid 11906] <... symlink resumed>) = 0 [pid 5051] mkdir("./581", 0777 [pid 11910] set_robust_list(0x555556ac56a0, 24 [pid 11909] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11908] write(3, "1000", 4 [pid 11906] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1128 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11910] <... set_robust_list resumed>) = 0 [pid 11909] <... prctl resumed>) = 0 [pid 11908] <... write resumed>) = 4 [pid 11906] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 11910] chdir("./563" [pid 11906] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11908] close(3 [pid 11910] <... chdir resumed>) = 0 [pid 11909] setpgid(0, 0 [pid 11906] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] unlink("./552/cgroup.cpu" [pid 11910] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11909] <... setpgid resumed>) = 0 [pid 11908] <... close resumed>) = 0 [pid 11906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11910] <... prctl resumed>) = 0 [pid 11909] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11908] symlink("/dev/binderfs", "./binderfs" [pid 11906] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11911 attached [pid 11910] setpgid(0, 0 [pid 5045] umount2("./552/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11910] <... setpgid resumed>) = 0 [pid 11910] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11908] <... symlink resumed>) = 0 [pid 11906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11911] set_robust_list(0x555556ac56a0, 24 [pid 11909] <... symlink resumed>) = 0 [pid 11906] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1165 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11911] <... set_robust_list resumed>) = 0 [pid 11910] <... symlink resumed>) = 0 [pid 11910] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11909] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11908] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11906] <... mprotect resumed>) = 0 [pid 11911] chdir("./581" [pid 11910] <... symlink resumed>) = 0 [pid 11909] <... symlink resumed>) = 0 [pid 11908] <... futex resumed>) = 0 [pid 11906] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] newfstatat(AT_FDCWD, "./552/binderfs", [pid 11911] <... chdir resumed>) = 0 [pid 11910] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11911] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11909] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11908] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11906] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11908] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11911] <... prctl resumed>) = 0 [pid 5045] unlink("./552/binderfs"./strace-static-x86_64: Process 11912 attached [pid 11911] setpgid(0, 0 [pid 11908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... unlink resumed>) = 0 [pid 11912] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11911] <... setpgid resumed>) = 0 [pid 11912] <... rseq resumed>) = 0 [pid 11911] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11910] <... symlink resumed>) = 0 [pid 11908] <... mmap resumed>) = 0x7f504ff5f000 [pid 11906] <... clone3 resumed> => {parent_tid=[1167]}, 88) = 1167 [pid 11912] set_robust_list(0x7f504ff7f9a0, 24 [pid 11911] <... symlink resumed>) = 0 [pid 11910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11909] <... symlink resumed>) = 0 [pid 11908] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11906] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] umount2("./552/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11912] <... set_robust_list resumed>) = 0 [pid 11912] rt_sigprocmask(SIG_SETMASK, [], [pid 11908] <... mprotect resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11912] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11912] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11911] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./552/cgroup", [pid 11911] <... symlink resumed>) = 0 [pid 11910] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./552/cgroup" [pid 11911] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 11910] write(3, "1000", 4 [pid 11909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11908] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11906] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11911] <... symlink resumed>) = 0 [pid 5045] umount2("./552/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11909] <... openat resumed>) = 3 [pid 11908] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11906] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11910] <... write resumed>) = 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] newfstatat(AT_FDCWD, "./552/blkio.bfq.io_wait_time_recursive", [pid 11912] <... futex resumed>) = 0 [pid 11911] <... openat resumed>) = 3 [pid 11910] close(3 [pid 11909] write(3, "1000", 4 [pid 11908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11906] <... futex resumed>) = 1 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11913 attached [pid 11911] write(3, "1000", 4 [pid 11910] <... close resumed>) = 0 [pid 11913] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11912] open(".", O_RDONLY [pid 11911] <... write resumed>) = 4 [pid 11909] <... write resumed>) = 4 [pid 11906] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./552/blkio.bfq.io_wait_time_recursive" [pid 11913] <... rseq resumed>) = 0 [pid 11911] close(3 [pid 11910] symlink("/dev/binderfs", "./binderfs" [pid 11909] close(3 [pid 11908] <... clone3 resumed> => {parent_tid=[1141]}, 88) = 1141 [pid 5045] <... unlink resumed>) = 0 [pid 11913] set_robust_list(0x7f504ff7f9a0, 24 [pid 11911] <... close resumed>) = 0 [pid 11909] <... close resumed>) = 0 [pid 11913] <... set_robust_list resumed>) = 0 [pid 11910] <... symlink resumed>) = 0 [pid 11911] symlink("/dev/binderfs", "./binderfs" [pid 11913] rt_sigprocmask(SIG_SETMASK, [], [pid 11909] symlink("/dev/binderfs", "./binderfs" [pid 11911] <... symlink resumed>) = 0 [pid 11910] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11909] <... symlink resumed>) = 0 [pid 5045] umount2("./552/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11913] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11913] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11912] <... open resumed>) = 3 [pid 11910] <... futex resumed>) = 0 [pid 11908] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] newfstatat(AT_FDCWD, "./552/cgroup.net", [pid 11912] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11909] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11912] <... futex resumed>) = 1 [pid 11910] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11909] <... futex resumed>) = 0 [pid 11908] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11906] <... futex resumed>) = 0 [pid 11912] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11910] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11909] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11908] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11906] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./552/cgroup.net" [pid 11913] <... futex resumed>) = 0 [pid 11912] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11909] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11908] <... futex resumed>) = 1 [pid 11906] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11913] open(".", O_RDONLY [pid 11912] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11911] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11910] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11909] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11908] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11906] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11913] <... open resumed>) = 3 [pid 11912] <... fcntl resumed>) = 0 [pid 11911] <... futex resumed>) = 0 [pid 11910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11909] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] getdents64(3, [pid 11909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11913] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11912] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11911] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11909] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11913] <... futex resumed>) = 1 [pid 11912] <... futex resumed>) = 1 [pid 11911] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11910] <... mmap resumed>) = 0x7f504ff5f000 [pid 11909] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11908] <... futex resumed>) = 0 [pid 11906] <... futex resumed>) = 0 [pid 5045] close(3 [pid 11913] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11912] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11911] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11910] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11909] <... mprotect resumed>) = 0 [pid 11906] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11912] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11911] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11910] <... mprotect resumed>) = 0 [pid 11909] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11908] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11906] <... futex resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11913] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11912] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11911] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] rmdir("./552" [pid 11913] <... fcntl resumed>) = 0 [pid 11911] <... mmap resumed>) = 0x7f504ff5f000 [pid 11909] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11908] <... futex resumed>) = 0 [pid 11909] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11913] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11908] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11913] <... futex resumed>) = 0 [pid 11908] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11913] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11911] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11906] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11908] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11909] <... clone3 resumed> => {parent_tid=[1137]}, 88) = 1137 [pid 11908] <... futex resumed>) = 0 [pid 11913] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11909] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 11914 attached [pid 11913] <... openat resumed>) = 4 [pid 11912] <... openat resumed>) = 4 [pid 11911] <... mprotect resumed>) = 0 [pid 11910] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11909] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11908] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11906] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5045] <... rmdir resumed>) = 0 [pid 11912] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11914] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11913] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11911] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11910] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11909] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11906] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] mkdir("./553", 0777 [pid 11914] <... rseq resumed>) = 0 [pid 11911] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11909] <... futex resumed>) = 0 [pid 11908] <... futex resumed>) = ? [pid 11914] set_robust_list(0x7f504ff7f9a0, 24 [pid 11913] +++ killed by SIGIO +++ [pid 11909] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11914] <... set_robust_list resumed>) = 0 [pid 11911] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11915 attached [pid 11915] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11915] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11915] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11915] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11912] +++ killed by SIGIO +++ [pid 11908] +++ killed by SIGIO +++ [pid 11906] +++ killed by SIGIO +++ [pid 11914] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11911] <... clone3 resumed> => {parent_tid=[1166]}, 88) = 1166 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1140, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 11916 attached [pid 11914] open(".", O_RDONLY [pid 11911] rt_sigprocmask(SIG_SETMASK, [], [pid 11916] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11914] <... open resumed>) = 3 [pid 11911] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11910] <... clone3 resumed> => {parent_tid=[1129]}, 88) = 1129 [pid 11916] <... rseq resumed>) = 0 [pid 11916] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11916] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11916] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11916] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11911] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11910] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11914] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11911] <... futex resumed>) = 0 [pid 11910] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1166, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11910] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11911] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11916] open(".", O_RDONLY [pid 11915] <... futex resumed>) = 0 [pid 11914] <... futex resumed>) = 1 [pid 11910] <... futex resumed>) = 1 [pid 11909] <... futex resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 11915] open(".", O_RDONLY [pid 11914] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11910] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11909] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11916] <... open resumed>) = 3 [pid 11915] <... open resumed>) = 3 [pid 11909] <... futex resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11915] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11914] <... fcntl resumed>) = 0 [pid 11909] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11915] <... futex resumed>) = 0 [pid 11914] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11910] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11915] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11910] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11916] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11915] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11910] <... futex resumed>) = 0 [pid 5050] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11914] <... futex resumed>) = 1 [pid 11909] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 11916] <... futex resumed>) = 1 [pid 11915] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11914] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11911] <... futex resumed>) = 0 [pid 11910] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11909] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11916] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11915] <... fcntl resumed>) = 0 [pid 11911] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11909] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11915] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11911] <... futex resumed>) = 0 [pid 11909] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11916] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11915] <... futex resumed>) = 0 [pid 11911] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11916] <... fcntl resumed>) = 0 [pid 11915] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11916] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11916] <... futex resumed>) = 1 [pid 11911] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 11916] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11911] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11916] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 11911] <... futex resumed>) = 0 [pid 11910] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] unlink("./569/cgroup.cpu") = 0 ./strace-static-x86_64: Process 11917 attached [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1109 [pid 11914] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11917] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./569/binderfs", [pid 11917] chdir("./553" [pid 5050] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11916] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11911] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./569/binderfs" [pid 11914] <... openat resumed>) = 4 [pid 5049] <... unlink resumed>) = 0 [pid 11917] <... chdir resumed>) = 0 [pid 11917] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11914] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11911] <... futex resumed>) = ? [pid 11910] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11917] <... prctl resumed>) = 0 [pid 11916] +++ killed by SIGIO +++ [pid 11915] <... futex resumed>) = 0 [pid 11910] <... futex resumed>) = 1 [pid 11909] <... futex resumed>) = ? [pid 5050] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11917] setpgid(0, 0 [pid 11915] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11910] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11917] <... setpgid resumed>) = 0 [pid 11914] +++ killed by SIGIO +++ [pid 5050] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./569/cgroup", [pid 11917] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11917] <... symlink resumed>) = 0 [pid 11915] <... openat resumed>) = 4 [pid 5050] newfstatat(AT_FDCWD, "./581/cgroup.cpu", [pid 11917] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./581/cgroup.cpu" [pid 11915] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11910] <... futex resumed>) = ? [pid 11915] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 11917] <... symlink resumed>) = 0 [pid 5049] unlink("./569/cgroup" [pid 11917] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5050] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11917] <... symlink resumed>) = 0 [pid 11909] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./581/binderfs", [pid 11917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1136, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11911] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1165, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11917] <... openat resumed>) = 3 [pid 5051] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./581/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11917] write(3, "1000", 4 [pid 11910] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11917] <... write resumed>) = 4 [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] getdents64(3, [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1128, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11917] close(3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 11917] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... restart_syscall resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./581/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./581/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 11917] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./581/cgroup", [pid 5047] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... unlink resumed>) = 0 [pid 5046] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... openat resumed>) = 3 [pid 5046] <... openat resumed>) = 3 [pid 5051] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./581/binderfs", [pid 5046] newfstatat(3, "", [pid 11917] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./581/cgroup" [pid 5047] newfstatat(3, "", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] unlink("./581/binderfs") = 0 [pid 5046] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, [pid 11917] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./581/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 11917] <... futex resumed>) = 0 [pid 5051] unlink("./581/cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11917] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11917] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 11917] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11917] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./567/cgroup.cpu", [pid 5046] unlink("./563/cgroup.cpu" [pid 11917] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", [pid 5049] unlink("./569/cgroup.net" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11917] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./567/cgroup.cpu" [pid 5051] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./563/binderfs", [pid 5051] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 11917] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11917] <... mprotect resumed>) = 0 [pid 5051] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./563/binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./581/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./581/cgroup.net" [pid 11917] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5050] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 5046] newfstatat(AT_FDCWD, "./563/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./567/binderfs", [pid 11917] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./581/cgroup.net", [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11917] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] close(3 [pid 5046] unlink("./563/cgroup" [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./569" [pid 5047] unlink("./567/binderfs"./strace-static-x86_64: Process 11918 attached [pid 11917] <... clone3 resumed> => {parent_tid=[1110]}, 88) = 1110 [pid 5051] rmdir("./581" [pid 5046] <... unlink resumed>) = 0 [pid 11918] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11917] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./581/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11918] <... rseq resumed>) = 0 [pid 11917] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11917] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 11918] set_robust_list(0x7f504ff7f9a0, 24 [pid 11917] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11918] <... set_robust_list resumed>) = 0 [pid 11917] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11918] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] mkdir("./582", 0777 [pid 5046] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 11918] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./570", 0777 [pid 5047] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 11918] open(".", O_RDONLY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... mkdir resumed>) = 0 [pid 5046] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./567/cgroup", [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./567/cgroup") = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11919 attached [pid 11918] <... open resumed>) = 3 [pid 5050] getdents64(3, [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./563/cgroup.net", [pid 5047] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11919] set_robust_list(0x555556ac56a0, 24 [pid 11918] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11918] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11917] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11919] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1167 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./563/cgroup.net" [pid 11917] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11918] <... futex resumed>) = 0 [pid 11917] <... futex resumed>) = 1 [pid 11918] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11917] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11918] <... fcntl resumed>) = 0 [pid 11918] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11917] <... futex resumed>) = 0 [pid 11918] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11917] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11917] <... futex resumed>) = 0 [pid 11918] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11917] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11918] <... openat resumed>) = 4 [pid 5047] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 11917] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... unlink resumed>) = 0 [pid 11917] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11919] chdir("./582" [pid 5050] close(3./strace-static-x86_64: Process 11920 attached ) = 0 [pid 11920] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11920] chdir("./570" [pid 11919] <... chdir resumed>) = 0 [pid 5050] rmdir("./581" [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11920] <... chdir resumed>) = 0 [pid 11920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11919] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] close(3 [pid 11919] <... prctl resumed>) = 0 [pid 5047] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11920] setpgid(0, 0 [pid 5046] <... close resumed>) = 0 [pid 11920] <... setpgid resumed>) = 0 [pid 11919] setpgid(0, 0) = 0 [pid 5050] mkdir("./582", 0777 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1142 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./563" [pid 11920] symlink("/syzcgroup/unified/syz3", "./cgroup") = 0 [pid 11920] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] <... rmdir resumed>) = 0 [pid 11920] <... symlink resumed>) = 0 [pid 11920] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./567/cgroup.net", [pid 11920] <... symlink resumed>) = 0 [pid 11919] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] unlink("./567/cgroup.net" [pid 11920] <... openat resumed>) = 3 [pid 11919] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] mkdir("./564", 0777 [pid 11920] write(3, "1000", 4) = 4 [pid 11920] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 11920] <... close resumed>) = 0 [pid 11920] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11920] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11920] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11920] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11921 attached [pid 11920] <... clone3 resumed> => {parent_tid=[1143]}, 88) = 1143 [pid 11921] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11921] set_robust_list(0x7f504ff7f9a0, 24 [pid 11920] rt_sigprocmask(SIG_SETMASK, [], [pid 11921] <... set_robust_list resumed>) = 0 [pid 11920] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11921] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11920] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11921] open(".", O_RDONLY [pid 11919] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 11920] <... futex resumed>) = 0 [pid 11920] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11921] <... open resumed>) = 3 [pid 11919] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5047] getdents64(3, [pid 11921] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11919] <... symlink resumed>) = 0 [pid 11918] +++ killed by SIGIO +++ [pid 11917] +++ killed by SIGIO +++ [pid 11920] <... futex resumed>) = 0 [pid 11920] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 11922 attached [pid 11921] <... futex resumed>) = 1 [pid 11920] <... futex resumed>) = 0 [pid 11922] set_robust_list(0x555556ac56a0, 24 [pid 11921] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5047] close(3 [pid 11922] <... set_robust_list resumed>) = 0 [pid 11921] <... fcntl resumed>) = 0 [pid 11920] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11922] chdir("./582" [pid 11921] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1168 [pid 5047] <... close resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1109, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11920] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11919] <... openat resumed>) = 3 [pid 5047] rmdir("./567" [pid 11921] <... futex resumed>) = 0 [pid 11920] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11921] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11920] <... futex resumed>) = 0 [pid 11919] write(3, "1000", 4 [pid 11921] <... openat resumed>) = 4 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] umount2("./553", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11919] <... write resumed>) = 4 [pid 11919] close(3) = 0 [pid 11919] symlink("/dev/binderfs", "./binderfs" [pid 11922] <... chdir resumed>) = 0 [pid 11919] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./568", 0777 [pid 5045] openat(AT_FDCWD, "./553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11922] setpgid(0, 0) = 0 [pid 11922] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11921] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11920] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11919] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... openat resumed>) = 3 [pid 11922] <... symlink resumed>) = 0 [pid 11921] <... futex resumed>) = ? [pid 11919] <... futex resumed>) = 0 [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 11923 attached [pid 11921] +++ killed by SIGIO +++ [pid 11919] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1130 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11923] set_robust_list(0x555556ac56a0, 24 [pid 11922] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11919] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 11919] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11923] <... set_robust_list resumed>) = 0 [pid 11922] <... symlink resumed>) = 0 [pid 11919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] getdents64(3, [pid 11919] <... mmap resumed>) = 0x7f504ff5f000 [pid 11919] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11923] chdir("./564" [pid 11922] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11920] +++ killed by SIGIO +++ [pid 11919] <... mprotect resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11923] <... chdir resumed>) = 0 [pid 11922] <... symlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1142, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] umount2("./553/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11923] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11923] <... prctl resumed>) = 0 [pid 11922] <... openat resumed>) = 3 [pid 5049] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 11924 attached [pid 11919] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1138 [pid 5045] newfstatat(AT_FDCWD, "./553/cgroup.cpu", [pid 11924] set_robust_list(0x555556ac56a0, 24 [pid 11923] setpgid(0, 0 [pid 11922] write(3, "1000", 4 [pid 11919] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11924] <... set_robust_list resumed>) = 0 [pid 11923] <... setpgid resumed>) = 0 [pid 11922] <... write resumed>) = 4 [pid 11919] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11924] chdir("./568" [pid 11923] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11922] close(3 [pid 5049] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] unlink("./553/cgroup.cpu" [pid 5049] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11925 attached [pid 11922] <... close resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 11925] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11924] <... chdir resumed>) = 0 [pid 11922] symlink("/dev/binderfs", "./binderfs" [pid 11919] <... clone3 resumed> => {parent_tid=[1168]}, 88) = 1168 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11925] <... rseq resumed>) = 0 [pid 11924] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11923] <... symlink resumed>) = 0 [pid 11922] <... symlink resumed>) = 0 [pid 11919] rt_sigprocmask(SIG_SETMASK, [], [pid 11925] set_robust_list(0x7f504ff7f9a0, 24 [pid 11924] <... prctl resumed>) = 0 [pid 11924] setpgid(0, 0 [pid 11922] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 11922] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./553/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11922] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11925] <... set_robust_list resumed>) = 0 [pid 11924] <... setpgid resumed>) = 0 [pid 11922] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11919] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11923] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11925] rt_sigprocmask(SIG_SETMASK, [], [pid 11922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./553/binderfs", [pid 11925] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11924] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11922] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11919] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11923] <... symlink resumed>) = 0 [pid 11922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 11924] <... symlink resumed>) = 0 [pid 11922] <... mmap resumed>) = 0x7f504ff5f000 [pid 11925] open(".", O_RDONLY [pid 11919] <... futex resumed>) = 0 [pid 11922] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./553/binderfs" [pid 11925] <... open resumed>) = 3 [pid 11924] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11923] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11922] <... mprotect resumed>) = 0 [pid 11919] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./570/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./553/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./553/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./553/cgroup" [pid 11925] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 11924] <... symlink resumed>) = 0 [pid 11919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11925] <... futex resumed>) = 0 [pid 5045] umount2("./553/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./553/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./553/blkio.bfq.io_wait_time_recursive" [pid 11922] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11919] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11925] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11924] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11923] <... symlink resumed>) = 0 [pid 11922] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11925] <... fcntl resumed>) = 0 [pid 11919] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11925] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11919] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./553/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11925] <... futex resumed>) = 0 [pid 11924] <... symlink resumed>) = 0 [pid 11923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] newfstatat(AT_FDCWD, "./570/binderfs", [pid 11925] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11923] <... openat resumed>) = 3 [pid 11919] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11925] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11924] <... openat resumed>) = 3 [pid 11922] <... clone3 resumed> => {parent_tid=[1169]}, 88) = 1169 [pid 11919] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11925] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5049] unlink("./570/binderfs"./strace-static-x86_64: Process 11926 attached [pid 11924] write(3, "1000", 4 [pid 11923] write(3, "1000", 4 [pid 11922] rt_sigprocmask(SIG_SETMASK, [], [pid 11919] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11926] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11924] <... write resumed>) = 4 [pid 11923] <... write resumed>) = 4 [pid 11922] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./553/cgroup.net", [pid 11925] <... openat resumed>) = 4 [pid 11924] close(3 [pid 11923] close(3 [pid 11919] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11925] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11926] <... rseq resumed>) = 0 [pid 11924] <... close resumed>) = 0 [pid 11923] <... close resumed>) = 0 [pid 11922] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./553/cgroup.net" [pid 11926] set_robust_list(0x7f504ff7f9a0, 24 [pid 11925] +++ killed by SIGIO +++ [pid 11924] symlink("/dev/binderfs", "./binderfs" [pid 11923] symlink("/dev/binderfs", "./binderfs" [pid 11922] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11926] <... set_robust_list resumed>) = 0 [pid 11923] <... symlink resumed>) = 0 [pid 11922] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, [pid 11926] rt_sigprocmask(SIG_SETMASK, [], [pid 11924] <... symlink resumed>) = 0 [pid 11923] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./570/cgroup", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11926] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 11926] open(".", O_RDONLY [pid 11924] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11923] <... futex resumed>) = 0 [pid 5045] rmdir("./553" [pid 11923] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11919] +++ killed by SIGIO +++ [pid 5049] unlink("./570/cgroup" [pid 5045] <... rmdir resumed>) = 0 [pid 11926] <... open resumed>) = 3 [pid 11924] <... futex resumed>) = 0 [pid 11923] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1167, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] mkdir("./554", 0777 [pid 11926] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11924] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11923] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... unlink resumed>) = 0 [pid 11926] <... futex resumed>) = 1 [pid 11924] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11923] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11922] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11926] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11924] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11923] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11922] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11926] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11924] <... mmap resumed>) = 0x7f504ff5f000 [pid 11924] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11924] <... mprotect resumed>) = 0 [pid 11924] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 11924] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11923] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./570/cgroup.net", ./strace-static-x86_64: Process 11927 attached ./strace-static-x86_64: Process 11928 attached [pid 11926] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11924] <... clone3 resumed> => {parent_tid=[1139]}, 88) = 1139 [pid 11923] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11922] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1111 [pid 11928] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11924] rt_sigprocmask(SIG_SETMASK, [], [pid 11923] <... mprotect resumed>) = 0 [pid 11928] <... rseq resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11928] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11927] set_robust_list(0x555556ac56a0, 24 [pid 11924] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] unlink("./570/cgroup.net" [pid 11928] rt_sigprocmask(SIG_SETMASK, [], [pid 11927] <... set_robust_list resumed>) = 0 [pid 11926] <... fcntl resumed>) = 0 [pid 11924] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11923] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11922] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 5049] <... unlink resumed>) = 0 [pid 11928] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11927] chdir("./554" [pid 11926] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11924] <... futex resumed>) = 0 [pid 11922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11924] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 11928] open(".", O_RDONLY [pid 11926] <... futex resumed>) = 0 [pid 11922] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11928] <... open resumed>) = 3 [pid 11927] <... chdir resumed>) = 0 [pid 5049] close(3 [pid 11928] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11927] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11926] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11923] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11922] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] <... close resumed>) = 0 [pid 11928] <... futex resumed>) = 1 [pid 11927] <... prctl resumed>) = 0 [pid 11924] <... futex resumed>) = 0 [pid 11923] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11928] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11927] setpgid(0, 0 [pid 11924] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11927] <... setpgid resumed>) = 0 [pid 11924] <... futex resumed>) = 0 [pid 5049] rmdir("./570"./strace-static-x86_64: Process 11929 attached [pid 11928] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11927] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11924] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11922] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... rmdir resumed>) = 0 [pid 11929] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11928] <... fcntl resumed>) = 0 [pid 11922] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11928] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11926] <... openat resumed>) = 4 [pid 11929] <... rseq resumed>) = 0 [pid 11928] <... futex resumed>) = 0 [pid 11927] <... symlink resumed>) = 0 [pid 11924] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./571", 0777 [pid 11929] set_robust_list(0x7f504ff7f9a0, 24 [pid 11928] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11926] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11922] restart_syscall(<... resuming interrupted futex ...> [pid 11923] <... clone3 resumed> => {parent_tid=[1131]}, 88) = 1131 [pid 5051] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 11923] rt_sigprocmask(SIG_SETMASK, [], [pid 11929] <... set_robust_list resumed>) = 0 [pid 11926] +++ killed by SIGIO +++ [pid 11924] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11923] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11929] rt_sigprocmask(SIG_SETMASK, [], [pid 11928] <... futex resumed>) = 0 [pid 11927] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11924] <... futex resumed>) = 1 [pid 11923] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11928] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11924] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11929] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11927] <... symlink resumed>) = 0 [pid 11929] open(".", O_RDONLY [pid 11928] <... openat resumed>) = 4 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11930 attached [pid 11929] <... open resumed>) = 3 [pid 11928] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11923] <... futex resumed>) = 0 [pid 5051] unlink("./582/cgroup.cpu" [pid 11923] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11927] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11922] +++ killed by SIGIO +++ [pid 11927] <... symlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1168, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11929] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11930] set_robust_list(0x555556ac56a0, 24 [pid 11928] +++ killed by SIGIO +++ [pid 11930] <... set_robust_list resumed>) = 0 [pid 11929] <... futex resumed>) = 1 [pid 11927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11924] <... futex resumed>) = ? [pid 11923] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1144 [pid 11930] chdir("./571" [pid 11929] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11927] <... openat resumed>) = 3 [pid 11923] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 11930] <... chdir resumed>) = 0 [pid 11929] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11927] write(3, "1000", 4 [pid 11923] <... futex resumed>) = 0 [pid 11930] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11929] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11927] <... write resumed>) = 4 [pid 11923] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11930] <... prctl resumed>) = 0 [pid 11929] <... fcntl resumed>) = 0 [pid 11927] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11930] setpgid(0, 0 [pid 11929] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11927] <... close resumed>) = 0 [pid 11930] <... setpgid resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./582/binderfs", [pid 5050] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11929] <... futex resumed>) = 1 [pid 11927] symlink("/dev/binderfs", "./binderfs" [pid 11924] +++ killed by SIGIO +++ [pid 11923] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11930] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11927] <... symlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5051] unlink("./582/binderfs" [pid 5050] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1138, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11930] <... symlink resumed>) = 0 [pid 11927] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11930] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11929] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11927] <... futex resumed>) = 0 [pid 11923] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11927] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11923] <... futex resumed>) = 0 [pid 11927] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11923] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11927] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11929] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5047] <... restart_syscall resumed>) = 0 [pid 11930] <... symlink resumed>) = 0 [pid 11929] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11927] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11930] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11929] <... openat resumed>) = 4 [pid 11927] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(AT_FDCWD, "./582/cgroup", [pid 5050] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11929] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11930] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 11930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11927] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11923] <... futex resumed>) = ? [pid 5051] unlink("./582/cgroup" [pid 5047] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11930] <... openat resumed>) = 3 [pid 11929] +++ killed by SIGIO +++ [pid 11927] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11930] write(3, "1000", 4) = 4 [pid 11930] close(3 [pid 5050] unlink("./582/cgroup.cpu" [pid 11930] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11930] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... openat resumed>) = 3 [pid 11927] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11923] +++ killed by SIGIO +++ [pid 5051] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 11930] <... symlink resumed>) = 0 [pid 11927] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11927] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./582/binderfs", [pid 5047] getdents64(3, [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1130, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 11931 attached [pid 11930] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11927] <... clone3 resumed> => {parent_tid=[1112]}, 88) = 1112 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./582/binderfs" [pid 5047] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... restart_syscall resumed>) = 0 [pid 11931] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11927] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11927] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11931] <... rseq resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./568/cgroup.cpu", [pid 11927] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11930] <... futex resumed>) = 0 [pid 11930] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11931] set_robust_list(0x7f504ff7f9a0, 24 [pid 11930] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11927] <... futex resumed>) = 0 [pid 11931] <... set_robust_list resumed>) = 0 [pid 11930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11927] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./582/blkio.bfq.io_wait_time_recursive" [pid 11931] rt_sigprocmask(SIG_SETMASK, [], [pid 11930] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11931] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11931] open(".", O_RDONLY [pid 11930] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./568/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11931] <... open resumed>) = 3 [pid 11930] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 11931] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11930] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./582/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5046] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./564/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./564/cgroup.cpu") = 0 [pid 5046] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./564/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./564/binderfs") = 0 [pid 5046] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./564/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./564/cgroup") = 0 [pid 5046] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./564/blkio.bfq.io_wait_time_recursive") = 0 [pid 5046] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./564/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./564/cgroup.net") = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 5046] rmdir("./564") = 0 [pid 5046] mkdir("./565", 0777 [pid 11931] <... futex resumed>) = 1 [pid 11927] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11931] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11930] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11927] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./582/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./582/cgroup", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11932 attached [pid 11931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11930] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11927] <... futex resumed>) = 0 [pid 11932] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... unlink resumed>) = 0 [pid 11932] <... set_robust_list resumed>) = 0 [pid 11931] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11927] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1132 [pid 11932] chdir("./565" [pid 11931] <... fcntl resumed>) = 0 [pid 11930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./568/binderfs", ./strace-static-x86_64: Process 11933 attached [pid 11932] <... chdir resumed>) = 0 [pid 11931] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11933] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11932] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11931] <... futex resumed>) = 1 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./582/cgroup" [pid 11927] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11930] <... clone3 resumed> => {parent_tid=[1145]}, 88) = 1145 [pid 11933] <... rseq resumed>) = 0 [pid 11932] <... prctl resumed>) = 0 [pid 11931] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11927] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5047] unlink("./568/binderfs" [pid 11933] set_robust_list(0x7f504ff7f9a0, 24 [pid 11932] setpgid(0, 0 [pid 11931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11930] rt_sigprocmask(SIG_SETMASK, [], [pid 11927] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11933] <... set_robust_list resumed>) = 0 [pid 11932] <... setpgid resumed>) = 0 [pid 11933] rt_sigprocmask(SIG_SETMASK, [], [pid 11932] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11931] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11930] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11927] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5050] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 11932] <... symlink resumed>) = 0 [pid 11931] <... openat resumed>) = 4 [pid 11933] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11930] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11927] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] rmdir("./582" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11933] open(".", O_RDONLY [pid 11932] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11931] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11930] <... futex resumed>) = 0 [pid 11927] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11930] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11927] <... restart_syscall resumed>) = ? [pid 5051] mkdir("./583", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./568/cgroup", [pid 11933] <... open resumed>) = 3 [pid 11932] <... symlink resumed>) = 0 [pid 11933] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11932] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11933] <... futex resumed>) = 1 [pid 11932] <... symlink resumed>) = 0 [pid 11930] <... futex resumed>) = 0 [pid 11933] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11930] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11933] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11933] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11930] <... futex resumed>) = 0 [pid 11933] <... fcntl resumed>) = 0 [pid 11930] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11933] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11930] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11933] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11932] <... openat resumed>) = 3 [pid 11930] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] unlink("./582/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./568/cgroup" [pid 11933] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11932] write(3, "1000", 4 [pid 11930] <... futex resumed>) = 0 [pid 11933] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11932] <... write resumed>) = 4 [pid 11930] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 11933] <... openat resumed>) = 4 [pid 11932] close(3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 11931] +++ killed by SIGIO +++ [pid 11927] +++ killed by SIGIO +++ [pid 5047] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11934 attached [pid 11933] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11932] <... close resumed>) = 0 [pid 11930] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1169 [pid 5050] newfstatat(AT_FDCWD, "./582/cgroup.net", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1111, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11932] symlink("/dev/binderfs", "./binderfs" [pid 5047] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11933] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 11932] <... symlink resumed>) = 0 [pid 5050] unlink("./582/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 11932] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11932] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... unlink resumed>) = 0 [pid 11932] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] getdents64(3, [pid 5047] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11932] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11932] <... mprotect resumed>) = 0 [pid 5045] umount2("./554", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11932] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11934] set_robust_list(0x555556ac56a0, 24 [pid 5047] newfstatat(AT_FDCWD, "./568/cgroup.net", [pid 5045] openat(AT_FDCWD, "./554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11932] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11934] <... set_robust_list resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 11935 attached [pid 11932] <... clone3 resumed> => {parent_tid=[1133]}, 88) = 1133 [pid 11935] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11932] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11935] <... rseq resumed>) = 0 [pid 11934] chdir("./583" [pid 5047] unlink("./568/cgroup.net" [pid 11935] set_robust_list(0x7f504ff7f9a0, 24 [pid 11932] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] rmdir("./582" [pid 5045] getdents64(3, [pid 11935] <... set_robust_list resumed>) = 0 [pid 11932] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11935] rt_sigprocmask(SIG_SETMASK, [], [pid 11932] <... futex resumed>) = 0 [pid 11935] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11932] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11935] open(".", O_RDONLY) = 3 [pid 11935] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11932] <... futex resumed>) = 0 [pid 11935] <... futex resumed>) = 1 [pid 11932] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11935] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11932] <... futex resumed>) = 0 [pid 11934] <... chdir resumed>) = 0 [pid 11935] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11932] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11935] <... futex resumed>) = 0 [pid 11932] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11935] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11932] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... rmdir resumed>) = 0 [pid 11935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11932] <... futex resumed>) = 0 [pid 11935] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11934] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... unlink resumed>) = 0 [pid 11935] <... openat resumed>) = 4 [pid 11932] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11935] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11932] <... futex resumed>) = ? [pid 5045] umount2("./554/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11934] <... prctl resumed>) = 0 [pid 5050] mkdir("./583", 0777 [pid 5047] getdents64(3, [pid 11934] setpgid(0, 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11934] <... setpgid resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(AT_FDCWD, "./554/cgroup.cpu", [pid 11934] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 11935] +++ killed by SIGIO +++ [pid 11934] <... symlink resumed>) = 0 [pid 11932] +++ killed by SIGIO +++ [pid 11930] +++ killed by SIGIO +++ [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11934] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] <... close resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1132, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] unlink("./554/cgroup.cpu") = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1144, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11934] <... symlink resumed>) = 0 [pid 5047] rmdir("./568" [pid 5046] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./554/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... rmdir resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 ./strace-static-x86_64: Process 11936 attached [pid 11934] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] newfstatat(3, "", [pid 5047] mkdir("./569", 0777 [pid 5046] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./554/binderfs", [pid 11936] set_robust_list(0x555556ac56a0, 24 [pid 11934] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11936] <... set_robust_list resumed>) = 0 [pid 5049] getdents64(3, [pid 11936] chdir("./583") = 0 [pid 11934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5049] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11936] setpgid(0, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 5047] <... mkdir resumed>) = 0 [pid 11936] <... setpgid resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./554/binderfs" [pid 11936] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11934] <... openat resumed>) = 3 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(3, "", [pid 5049] unlink("./571/cgroup.cpu") = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11936] <... symlink resumed>) = 0 [pid 5049] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./571/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./571/binderfs" [pid 11936] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 11936] <... symlink resumed>) = 0 [pid 11934] write(3, "1000", 4 [pid 5046] getdents64(3, [pid 5049] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11937 attached [pid 5049] newfstatat(AT_FDCWD, "./571/cgroup", [pid 11937] set_robust_list(0x555556ac56a0, 24 [pid 11936] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11934] <... write resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1170 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1140 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./554/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11937] <... set_robust_list resumed>) = 0 [pid 11934] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11937] chdir("./569" [pid 11936] <... symlink resumed>) = 0 [pid 11934] <... close resumed>) = 0 [pid 5049] unlink("./571/cgroup" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./554/cgroup", [pid 11934] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11934] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./554/cgroup" [pid 11936] <... openat resumed>) = 3 [pid 11934] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./565/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 11937] <... chdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 11937] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11934] <... futex resumed>) = 0 [pid 5049] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./554/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11937] <... prctl resumed>) = 0 [pid 11934] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11937] setpgid(0, 0 [pid 11934] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./565/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11937] <... setpgid resumed>) = 0 [pid 11936] write(3, "1000", 4 [pid 11934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./554/blkio.bfq.io_wait_time_recursive", [pid 11936] <... write resumed>) = 4 [pid 11934] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./565/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11937] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11936] close(3 [pid 11934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 11936] <... close resumed>) = 0 [pid 11934] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] unlink("./554/blkio.bfq.io_wait_time_recursive" [pid 11937] <... symlink resumed>) = 0 [pid 11936] symlink("/dev/binderfs", "./binderfs" [pid 11934] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11937] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11936] <... symlink resumed>) = 0 [pid 11934] <... mprotect resumed>) = 0 [pid 11936] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./554/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11934] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./565/cgroup", [pid 11936] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11937] <... symlink resumed>) = 0 [pid 11934] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11937] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11936] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./554/cgroup.net", ./strace-static-x86_64: Process 11938 attached [pid 11937] <... symlink resumed>) = 0 [pid 11936] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./565/cgroup" [pid 11938] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11936] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11934] <... clone3 resumed> => {parent_tid=[1170]}, 88) = 1170 [pid 5049] unlink("./571/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11938] <... rseq resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] unlink("./554/cgroup.net" [pid 11938] set_robust_list(0x7f504ff7f9a0, 24 [pid 11936] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11934] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] getdents64(3, [pid 5046] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 11938] <... set_robust_list resumed>) = 0 [pid 11937] <... openat resumed>) = 3 [pid 11936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11934] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11937] write(3, "1000", 4) = 4 [pid 11937] close(3) = 0 [pid 11937] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11938] rt_sigprocmask(SIG_SETMASK, [], [pid 11936] <... mmap resumed>) = 0x7f504ff5f000 [pid 11934] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 11938] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11937] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11936] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11934] <... futex resumed>) = 0 [pid 11938] open(".", O_RDONLY [pid 11934] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11938] <... open resumed>) = 3 [pid 11937] <... futex resumed>) = 0 [pid 11936] <... mprotect resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11938] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11937] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11938] <... futex resumed>) = 1 [pid 11937] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11934] <... futex resumed>) = 0 [pid 5049] rmdir("./571" [pid 5045] close(3 [pid 11938] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11937] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11936] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11934] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11938] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11937] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11934] <... futex resumed>) = 0 [pid 5046] unlink("./565/blkio.bfq.io_wait_time_recursive" [pid 11938] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11937] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11934] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11938] <... fcntl resumed>) = 0 [pid 11938] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11934] <... futex resumed>) = 0 [pid 11938] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11934] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11938] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11934] <... futex resumed>) = 0 [pid 11938] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11937] <... mmap resumed>) = 0x7f504ff5f000 [pid 11934] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11938] <... openat resumed>) = 4 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 11938] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11937] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11936] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11934] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... rmdir resumed>) = 0 [pid 5046] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./565/cgroup.net", [pid 5045] rmdir("./554" [pid 11937] <... mprotect resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./565/cgroup.net" [pid 11936] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... rmdir resumed>) = 0 [pid 5049] mkdir("./572", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 5046] rmdir("./565" [pid 11937] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... rmdir resumed>) = 0 [pid 5046] mkdir("./566", 0777 [pid 5049] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 11939 attached [pid 11937] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11937] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11936] <... clone3 resumed> => {parent_tid=[1171]}, 88) = 1171 [pid 5045] mkdir("./555", 0777 [pid 11939] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11938] +++ killed by SIGIO +++ [pid 11936] rt_sigprocmask(SIG_SETMASK, [], [pid 11934] +++ killed by SIGIO +++ [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11939] <... rseq resumed>) = 0 ./strace-static-x86_64: Process 11941 attached ./strace-static-x86_64: Process 11940 attached [pid 11939] set_robust_list(0x7f504ff7f9a0, 24 [pid 11936] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11941] set_robust_list(0x555556ac56a0, 24 [pid 11940] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11939] <... set_robust_list resumed>) = 0 [pid 11937] <... clone3 resumed> => {parent_tid=[1141]}, 88) = 1141 [pid 11936] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1169, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11939] open(".", O_RDONLY) = 3 [pid 11939] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11939] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1146 [pid 11939] <... futex resumed>) = 0 [pid 11936] <... futex resumed>) = 1 [pid 11940] <... rseq resumed>) = 0 [pid 11937] rt_sigprocmask(SIG_SETMASK, [], [pid 11940] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11939] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11937] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11936] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11941] <... set_robust_list resumed>) = 0 [pid 11936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11940] rt_sigprocmask(SIG_SETMASK, [], [pid 11937] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11936] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11940] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11939] <... futex resumed>) = 0 [pid 11937] <... futex resumed>) = 0 [pid 11936] <... futex resumed>) = 1 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11941] chdir("./572" [pid 5051] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11936] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11939] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] <... openat resumed>) = 3 [pid 11941] <... chdir resumed>) = 0 [pid 11940] open(".", O_RDONLY [pid 11939] <... fcntl resumed>) = 0 [pid 11937] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 11941] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 11942 attached ) = 0 [pid 11940] <... open resumed>) = 3 [pid 11939] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1113 ./strace-static-x86_64: Process 11943 attached [pid 11942] set_robust_list(0x555556ac56a0, 24 [pid 11941] setpgid(0, 0 [pid 11940] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11939] <... futex resumed>) = 1 [pid 11936] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 11943] set_robust_list(0x555556ac56a0, 24 [pid 11942] <... set_robust_list resumed>) = 0 [pid 11941] <... setpgid resumed>) = 0 [pid 11940] <... futex resumed>) = 1 [pid 11939] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11937] <... futex resumed>) = 0 [pid 11936] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11943] <... set_robust_list resumed>) = 0 [pid 11941] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11940] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11937] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1134 [pid 11942] chdir("./555" [pid 11940] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11937] <... futex resumed>) = 0 [pid 11940] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11937] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11940] <... fcntl resumed>) = 0 [pid 11943] chdir("./566" [pid 11942] <... chdir resumed>) = 0 [pid 11940] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11936] <... futex resumed>) = 0 [pid 11941] <... symlink resumed>) = 0 [pid 11939] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11936] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11943] <... chdir resumed>) = 0 [pid 11942] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11940] <... futex resumed>) = 1 [pid 11937] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11943] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11942] <... prctl resumed>) = 0 [pid 11941] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11940] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11937] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11943] <... prctl resumed>) = 0 [pid 11942] setpgid(0, 0 [pid 11940] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./583/cgroup.cpu", [pid 11943] setpgid(0, 0 [pid 11942] <... setpgid resumed>) = 0 [pid 11940] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11937] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11943] <... setpgid resumed>) = 0 [pid 11942] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11941] <... symlink resumed>) = 0 [pid 11939] <... openat resumed>) = 4 [pid 11942] <... symlink resumed>) = 0 [pid 11940] <... openat resumed>) = 4 [pid 5051] unlink("./583/cgroup.cpu" [pid 11943] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11939] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11937] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11943] <... symlink resumed>) = 0 [pid 11942] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11941] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11936] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 11941] <... symlink resumed>) = 0 [pid 11940] +++ killed by SIGIO +++ [pid 11939] +++ killed by SIGIO +++ [pid 11942] <... symlink resumed>) = 0 [pid 11943] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11942] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11943] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./583/binderfs", [pid 11942] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11943] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./583/binderfs" [pid 11943] <... symlink resumed>) = 0 [pid 11941] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 11942] <... openat resumed>) = 3 [pid 11941] write(3, "1000", 4 [pid 11942] write(3, "1000", 4 [pid 5051] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11942] <... write resumed>) = 4 [pid 11941] <... write resumed>) = 4 [pid 11937] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11942] close(3 [pid 11941] close(3 [pid 5051] newfstatat(AT_FDCWD, "./583/cgroup", [pid 11942] <... close resumed>) = 0 [pid 11941] <... close resumed>) = 0 [pid 11943] <... openat resumed>) = 3 [pid 11942] symlink("/dev/binderfs", "./binderfs" [pid 11941] symlink("/dev/binderfs", "./binderfs" [pid 11936] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1140, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11943] write(3, "1000", 4 [pid 11942] <... symlink resumed>) = 0 [pid 11941] <... symlink resumed>) = 0 [pid 5051] unlink("./583/cgroup" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1170, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11943] <... write resumed>) = 4 [pid 11942] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11941] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11943] close(3 [pid 11942] <... futex resumed>) = 0 [pid 11941] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11943] <... close resumed>) = 0 [pid 11942] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11941] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11941] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11942] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11941] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11943] symlink("/dev/binderfs", "./binderfs" [pid 11942] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11942] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 11943] <... symlink resumed>) = 0 [pid 11942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11941] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11943] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11942] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 11941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11943] <... futex resumed>) = 0 [pid 11942] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(3, "", [pid 5047] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11941] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11943] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11942] <... mprotect resumed>) = 0 [pid 11941] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 5050] getdents64(3, [pid 5047] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11943] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11941] <... mprotect resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11943] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11941] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11943] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./583/cgroup.net" [pid 5050] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11943] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11942] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11941] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] newfstatat(3, "", [pid 11943] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11942] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11943] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11941] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11943] <... mprotect resumed>) = 0 [pid 11942] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./583/cgroup.cpu", [pid 5047] getdents64(3, ./strace-static-x86_64: Process 11944 attached [pid 11943] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11941] <... clone3 resumed> => {parent_tid=[1147]}, 88) = 1147 [pid 5051] rmdir("./583"./strace-static-x86_64: Process 11945 attached [pid 11944] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11943] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11941] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11945] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11944] <... rseq resumed>) = 0 [pid 11943] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11942] <... clone3 resumed> => {parent_tid=[1114]}, 88) = 1114 [pid 11941] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./583/cgroup.cpu" [pid 5047] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11946 attached [pid 11945] <... rseq resumed>) = 0 [pid 11944] set_robust_list(0x7f504ff7f9a0, 24 [pid 11942] rt_sigprocmask(SIG_SETMASK, [], [pid 11941] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./584", 0777 [pid 11944] <... set_robust_list resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11944] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11946] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11945] set_robust_list(0x7f504ff7f9a0, 24 [pid 11943] <... clone3 resumed> => {parent_tid=[1135]}, 88) = 1135 [pid 11942] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11941] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11944] open(".", O_RDONLY [pid 11945] <... set_robust_list resumed>) = 0 [pid 11942] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 11946] <... rseq resumed>) = 0 [pid 11945] rt_sigprocmask(SIG_SETMASK, [], [pid 11943] rt_sigprocmask(SIG_SETMASK, [], [pid 11942] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./583/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11946] set_robust_list(0x7f504ff7f9a0, 24 [pid 11945] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11943] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11942] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11941] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11946] <... set_robust_list resumed>) = 0 [pid 11945] open(".", O_RDONLY [pid 11943] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./569/cgroup.cpu" [pid 11946] rt_sigprocmask(SIG_SETMASK, [], [pid 11945] <... open resumed>) = 3 [pid 11944] <... open resumed>) = 3 [pid 11943] <... futex resumed>) = 0 [pid 5050] unlink("./583/binderfs" [pid 11946] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11946] open(".", O_RDONLY [pid 5047] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11943] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11946] <... open resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11946] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./569/binderfs", [pid 11946] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11946] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11944] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11944] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11941] <... futex resumed>) = 0 [pid 5047] unlink("./569/binderfs" [pid 11941] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11944] <... futex resumed>) = 0 [pid 11941] <... futex resumed>) = 1 ./strace-static-x86_64: Process 11947 attached [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1171 [pid 11945] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11943] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./583/cgroup", [pid 11947] set_robust_list(0x555556ac56a0, 24 [pid 11945] <... futex resumed>) = 1 [pid 11944] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11943] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11942] <... futex resumed>) = 0 [pid 11941] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11947] <... set_robust_list resumed>) = 0 [pid 11946] <... futex resumed>) = 0 [pid 11945] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11944] <... fcntl resumed>) = 0 [pid 11943] <... futex resumed>) = 1 [pid 11942] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./583/cgroup" [pid 11947] chdir("./584" [pid 11946] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11944] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11943] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11942] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11945] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11942] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11944] <... futex resumed>) = 1 [pid 11941] <... futex resumed>) = 0 [pid 11946] <... fcntl resumed>) = 0 [pid 11945] <... fcntl resumed>) = 0 [pid 11947] <... chdir resumed>) = 0 [pid 11946] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11945] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11944] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11941] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./569/cgroup", [pid 11947] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11946] <... futex resumed>) = 1 [pid 11945] <... futex resumed>) = 1 [pid 11944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11943] <... futex resumed>) = 0 [pid 11942] <... futex resumed>) = 0 [pid 11941] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11947] <... prctl resumed>) = 0 [pid 11946] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11945] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11944] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11943] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11942] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11941] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", [pid 11947] setpgid(0, 0 [pid 11945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11943] <... futex resumed>) = 0 [pid 11942] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11945] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11943] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11947] <... setpgid resumed>) = 0 [pid 11945] <... openat resumed>) = 4 [pid 11944] <... openat resumed>) = 4 [pid 11942] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./569/cgroup") = 0 [pid 11941] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11944] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5050] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 11946] <... openat resumed>) = 4 [pid 11941] restart_syscall(<... resuming interrupted futex ...> [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11947] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] unlink("./583/cgroup.net") = 0 [pid 11941] <... restart_syscall resumed>) = ? [pid 11944] +++ killed by SIGIO +++ [pid 5047] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11947] <... symlink resumed>) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 5050] rmdir("./583") = 0 [pid 5050] mkdir("./584", 0777 [pid 11947] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 11946] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11941] +++ killed by SIGIO +++ [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11943] <... futex resumed>) = ? [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1146, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11947] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", [pid 11947] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11945] +++ killed by SIGIO +++ [pid 11942] +++ killed by SIGIO +++ [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11947] <... symlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 5049] <... openat resumed>) = 3 [pid 5049] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1113, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./572/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./572/cgroup.cpu" [pid 5045] umount2("./555", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11947] <... openat resumed>) = 3 [pid 11946] +++ killed by SIGIO +++ [pid 11943] +++ killed by SIGIO +++ [pid 5047] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11947] write(3, "1000", 4 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11947] <... write resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1172 [pid 5047] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 11947] close(3 [pid 5049] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11947] <... close resumed>) = 0 [pid 5047] unlink("./569/cgroup.net"./strace-static-x86_64: Process 11948 attached [pid 11947] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1134, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11948] set_robust_list(0x555556ac56a0, 24 [pid 11947] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./572/binderfs", [pid 5047] getdents64(3, [pid 5045] openat(AT_FDCWD, "./555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11948] <... set_robust_list resumed>) = 0 [pid 11947] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11947] <... futex resumed>) = 0 [pid 5049] unlink("./572/binderfs" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11947] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... openat resumed>) = 3 [pid 11948] chdir("./584" [pid 5046] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 11948] <... chdir resumed>) = 0 [pid 11947] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11948] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11947] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... close resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11948] <... prctl resumed>) = 0 [pid 11947] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] rmdir("./569" [pid 5045] getdents64(3, [pid 11948] setpgid(0, 0 [pid 11947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./572/cgroup", [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11947] <... mmap resumed>) = 0x7f504ff5f000 [pid 11948] <... setpgid resumed>) = 0 [pid 11947] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11947] <... mprotect resumed>) = 0 [pid 5049] unlink("./572/cgroup" [pid 5045] umount2("./555/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11948] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11947] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./570", 0777 [pid 11948] <... symlink resumed>) = 0 [pid 11947] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./555/cgroup.cpu", [pid 11948] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11947] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11949 attached [pid 11947] <... clone3 resumed> => {parent_tid=[1172]}, 88) = 1172 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11949] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11948] <... symlink resumed>) = 0 [pid 11947] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./555/cgroup.cpu" [pid 11949] <... rseq resumed>) = 0 [pid 11947] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./572/blkio.bfq.io_wait_time_recursive" [pid 11949] set_robust_list(0x7f504ff7f9a0, 24 [pid 11947] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11949] <... set_robust_list resumed>) = 0 [pid 11948] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11947] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11949] rt_sigprocmask(SIG_SETMASK, [], [pid 11948] <... symlink resumed>) = 0 [pid 11947] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11949] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11950 attached [pid 11949] open(".", O_RDONLY [pid 11948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1142 [pid 5046] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 5045] umount2("./555/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11950] set_robust_list(0x555556ac56a0, 24 [pid 11949] <... open resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./572/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./566/cgroup.cpu" [pid 5045] newfstatat(AT_FDCWD, "./555/binderfs", [pid 11950] <... set_robust_list resumed>) = 0 [pid 11949] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11948] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11949] <... futex resumed>) = 1 [pid 11948] write(3, "1000", 4 [pid 11947] <... futex resumed>) = 0 [pid 5049] unlink("./572/cgroup.net" [pid 11949] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11948] <... write resumed>) = 4 [pid 11947] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./555/binderfs" [pid 11950] chdir("./570" [pid 11949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11948] close(3 [pid 11947] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11950] <... chdir resumed>) = 0 [pid 11949] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11948] <... close resumed>) = 0 [pid 11947] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./566/binderfs", [pid 5045] umount2("./555/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11950] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11949] <... fcntl resumed>) = 0 [pid 11948] symlink("/dev/binderfs", "./binderfs" [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11950] <... prctl resumed>) = 0 [pid 11949] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11948] <... symlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11950] setpgid(0, 0 [pid 11949] <... futex resumed>) = 1 [pid 11947] <... futex resumed>) = 0 [pid 11949] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11950] <... setpgid resumed>) = 0 [pid 11947] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./566/binderfs" [pid 5045] newfstatat(AT_FDCWD, "./555/cgroup", [pid 5049] close(3 [pid 11950] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11948] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11947] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11949] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11947] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./555/cgroup" [pid 11949] <... openat resumed>) = 4 [pid 5049] <... close resumed>) = 0 [pid 5046] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./566/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./555/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11950] <... symlink resumed>) = 0 [pid 11948] <... futex resumed>) = 0 [pid 11947] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] rmdir("./572" [pid 11949] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] unlink("./566/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11950] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 11948] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... unlink resumed>) = 0 [pid 11948] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./555/blkio.bfq.io_wait_time_recursive", [pid 11948] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 5045] unlink("./555/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] unlink("./566/blkio.bfq.io_wait_time_recursive" [pid 11950] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./555/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./555/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./555/cgroup.net" [pid 5046] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./566/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./566/cgroup.net" [pid 5045] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] rmdir("./555" [pid 11949] +++ killed by SIGIO +++ [pid 11948] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11947] +++ killed by SIGIO +++ [pid 5046] close(3 [pid 5045] <... rmdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./566" [pid 11950] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11948] <... mprotect resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1171, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] mkdir("./573", 0777 [pid 5045] mkdir("./556", 0777 [pid 11950] <... symlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5046] mkdir("./567", 0777 [pid 11950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11950] <... openat resumed>) = 3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11950] write(3, "1000", 4 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11951 attached [pid 11951] set_robust_list(0x555556ac56a0, 24 [pid 11950] <... write resumed>) = 4 [pid 11948] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11952 attached [pid 11950] close(3 [pid 11948] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1148 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1136 ./strace-static-x86_64: Process 11953 attached [pid 11950] <... close resumed>) = 0 [pid 11948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1115 [pid 11950] symlink("/dev/binderfs", "./binderfs" [pid 11951] <... set_robust_list resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 11950] <... symlink resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 11950] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11953] set_robust_list(0x555556ac56a0, 24 [pid 11951] chdir("./573" [pid 11950] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11954 attached [pid 11953] <... set_robust_list resumed>) = 0 [pid 11952] set_robust_list(0x555556ac56a0, 24 [pid 11951] <... chdir resumed>) = 0 [pid 11950] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] getdents64(3, [pid 11954] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11952] <... set_robust_list resumed>) = 0 [pid 11951] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11948] <... clone3 resumed> => {parent_tid=[1173]}, 88) = 1173 [pid 11954] <... rseq resumed>) = 0 [pid 11951] <... prctl resumed>) = 0 [pid 11950] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11953] chdir("./556" [pid 11952] chdir("./567" [pid 11954] set_robust_list(0x7f504ff7f9a0, 24 [pid 11950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11948] rt_sigprocmask(SIG_SETMASK, [], [pid 11951] setpgid(0, 0) = 0 [pid 11951] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11954] <... set_robust_list resumed>) = 0 [pid 11950] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11948] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11954] rt_sigprocmask(SIG_SETMASK, [], [pid 11953] <... chdir resumed>) = 0 [pid 11952] <... chdir resumed>) = 0 [pid 11950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11948] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11954] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11953] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11952] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11948] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11953] <... prctl resumed>) = 0 [pid 11950] <... mmap resumed>) = 0x7f504ff5f000 [pid 11948] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11950] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11953] setpgid(0, 0 [pid 11954] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./584/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11953] <... setpgid resumed>) = 0 [pid 11952] <... prctl resumed>) = 0 [pid 11950] <... mprotect resumed>) = 0 [pid 11954] <... open resumed>) = 3 [pid 11953] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11952] setpgid(0, 0 [pid 11951] <... symlink resumed>) = 0 [pid 11950] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./584/cgroup.cpu" [pid 11954] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11952] <... setpgid resumed>) = 0 [pid 11951] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11954] <... futex resumed>) = 1 [pid 11953] <... symlink resumed>) = 0 [pid 11952] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11951] <... symlink resumed>) = 0 [pid 11950] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11948] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11954] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11953] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11952] <... symlink resumed>) = 0 [pid 11951] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11948] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11955 attached [pid 11954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11953] <... symlink resumed>) = 0 [pid 11952] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11951] <... symlink resumed>) = 0 [pid 11948] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11955] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11954] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11953] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11950] <... clone3 resumed> => {parent_tid=[1143]}, 88) = 1143 [pid 11948] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./584/binderfs", [pid 11955] <... rseq resumed>) = 0 [pid 11954] <... fcntl resumed>) = 0 [pid 11953] <... symlink resumed>) = 0 [pid 11952] <... symlink resumed>) = 0 [pid 11951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11950] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11955] set_robust_list(0x7f504ff7f9a0, 24 [pid 11954] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11952] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] unlink("./584/binderfs" [pid 11950] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11955] <... set_robust_list resumed>) = 0 [pid 11954] <... futex resumed>) = 1 [pid 11953] <... openat resumed>) = 3 [pid 11951] <... openat resumed>) = 3 [pid 11948] <... futex resumed>) = 0 [pid 11955] rt_sigprocmask(SIG_SETMASK, [], [pid 11952] <... symlink resumed>) = 0 [pid 11951] write(3, "1000", 4 [pid 11955] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11954] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11951] <... write resumed>) = 4 [pid 11948] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11955] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11951] close(3) = 0 [pid 11951] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 11951] <... symlink resumed>) = 0 [pid 11951] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11954] <... openat resumed>) = 4 [pid 11951] <... futex resumed>) = 0 [pid 11951] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11951] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11951] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11953] write(3, "1000", 4 [pid 11950] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11948] <... futex resumed>) = 0 [pid 11954] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11955] <... futex resumed>) = 0 [pid 11953] <... write resumed>) = 4 [pid 11951] <... mmap resumed>) = 0x7f504ff5f000 [pid 11950] <... futex resumed>) = 1 [pid 11955] open(".", O_RDONLY [pid 11953] close(3 [pid 11951] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11955] <... open resumed>) = 3 [pid 11953] <... close resumed>) = 0 [pid 11951] <... mprotect resumed>) = 0 [pid 11954] +++ killed by SIGIO +++ [pid 11953] symlink("/dev/binderfs", "./binderfs" [pid 11951] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11955] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11955] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11951] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11951] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11953] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11956 attached [pid 11951] <... clone3 resumed> => {parent_tid=[1149]}, 88) = 1149 [pid 11956] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11951] rt_sigprocmask(SIG_SETMASK, [], [pid 11956] <... rseq resumed>) = 0 [pid 11951] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11956] set_robust_list(0x7f504ff7f9a0, 24 [pid 11951] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11956] <... set_robust_list resumed>) = 0 [pid 11951] <... futex resumed>) = 0 [pid 11956] rt_sigprocmask(SIG_SETMASK, [], [pid 11951] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11956] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11956] open(".", O_RDONLY) = 3 [pid 11956] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11951] <... futex resumed>) = 0 [pid 11956] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11951] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11956] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11951] <... futex resumed>) = 0 [pid 11956] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11951] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11948] +++ killed by SIGIO +++ [pid 11953] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11951] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11951] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11956] <... futex resumed>) = 0 [pid 11956] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11951] <... futex resumed>) = 0 [pid 11956] <... openat resumed>) = 4 [pid 11953] <... futex resumed>) = 0 [pid 11952] <... openat resumed>) = 3 [pid 11950] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./584/cgroup", [pid 11953] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11952] write(3, "1000", 4 [pid 11950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11950] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11953] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11950] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11953] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11952] <... write resumed>) = 4 [pid 11950] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./584/cgroup" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1172, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11952] close(3 [pid 11956] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11955] <... futex resumed>) = 0 [pid 11951] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11955] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11953] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11956] <... futex resumed>) = ? [pid 11955] <... fcntl resumed>) = 0 [pid 11953] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11952] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11955] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11953] <... mprotect resumed>) = 0 [pid 11952] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 11952] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./584/blkio.bfq.io_wait_time_recursive") = 0 [pid 11953] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] newfstatat(3, "", [pid 11952] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11952] <... futex resumed>) = 0 [pid 11953] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11953] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11952] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, [pid 11955] <... futex resumed>) = 1 [pid 11952] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11950] <... futex resumed>) = 0 [pid 5051] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11955] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11950] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11950] <... futex resumed>) = 0 [pid 11955] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000./strace-static-x86_64: Process 11957 attached [pid 11956] +++ killed by SIGIO +++ [pid 11955] <... openat resumed>) = 4 [pid 11952] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11951] +++ killed by SIGIO +++ [pid 11950] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11957] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11955] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11953] <... clone3 resumed> => {parent_tid=[1116]}, 88) = 1116 [pid 11952] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 5050] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11957] <... rseq resumed>) = 0 [pid 11953] rt_sigprocmask(SIG_SETMASK, [], [pid 11952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11950] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1148, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11957] set_robust_list(0x7f504ff7f9a0, 24 [pid 11955] +++ killed by SIGIO +++ [pid 11953] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11952] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./584/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./584/cgroup.cpu", [pid 11953] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11952] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11957] <... set_robust_list resumed>) = 0 [pid 11953] <... futex resumed>) = 0 [pid 11952] <... mprotect resumed>) = 0 [pid 5049] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11957] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] unlink("./584/cgroup.cpu" [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5051] close(3) = 0 [pid 11952] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11957] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11953] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] rmdir("./584" [pid 11957] open(".", O_RDONLY [pid 11952] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11957] <... open resumed>) = 3 [pid 11952] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11958 attached [pid 11957] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 11958] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11957] <... futex resumed>) = 1 [pid 11953] <... futex resumed>) = 0 [pid 11958] <... rseq resumed>) = 0 [pid 11957] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11953] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11952] <... clone3 resumed> => {parent_tid=[1137]}, 88) = 1137 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./584/binderfs", [pid 11958] set_robust_list(0x7f504ff7f9a0, 24 [pid 11957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11953] <... futex resumed>) = 0 [pid 11950] +++ killed by SIGIO +++ [pid 11952] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] mkdir("./585", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(3, "", [pid 11958] <... set_robust_list resumed>) = 0 [pid 11957] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11953] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1142, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] unlink("./584/binderfs" [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 11957] <... fcntl resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 11957] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11953] <... futex resumed>) = 0 [pid 11957] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] getdents64(3, [pid 11957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11953] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11957] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11953] <... futex resumed>) = 0 [pid 5050] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./584/cgroup", [pid 5047] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11957] <... openat resumed>) = 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] unlink("./584/cgroup" [pid 5047] <... openat resumed>) = 3 [pid 5050] <... unlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5050] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11952] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11958] rt_sigprocmask(SIG_SETMASK, [], [pid 11953] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11952] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11958] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11952] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11952] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./584/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11958] open(".", O_RDONLY [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 11958] <... open resumed>) = 3 [pid 5050] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./573/cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 5047] unlink("./570/cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./584/cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11958] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./570/binderfs", [pid 5050] rmdir("./584" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] unlink("./570/binderfs"./strace-static-x86_64: Process 11959 attached [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1173 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11959] set_robust_list(0x555556ac56a0, 24 [pid 11958] <... futex resumed>) = 1 [pid 5049] newfstatat(AT_FDCWD, "./573/binderfs", [pid 11959] <... set_robust_list resumed>) = 0 [pid 11959] chdir("./585" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11959] <... chdir resumed>) = 0 [pid 11952] <... futex resumed>) = 0 [pid 5049] unlink("./573/binderfs" [pid 11959] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11958] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] mkdir("./585", 0777 [pid 5049] <... unlink resumed>) = 0 [pid 11952] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11952] <... futex resumed>) = 0 [pid 11959] <... prctl resumed>) = 0 [pid 11958] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11952] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11959] setpgid(0, 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11959] <... setpgid resumed>) = 0 [pid 11959] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./570/cgroup", [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11960 attached [pid 11958] <... fcntl resumed>) = 0 [pid 11957] +++ killed by SIGIO +++ [pid 11953] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11960] set_robust_list(0x555556ac56a0, 24 [pid 11959] <... symlink resumed>) = 0 [pid 11958] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1174 [pid 5049] newfstatat(AT_FDCWD, "./573/cgroup", [pid 5047] unlink("./570/cgroup" [pid 11960] <... set_robust_list resumed>) = 0 [pid 11958] <... futex resumed>) = 1 [pid 11952] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1115, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11958] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11952] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./573/cgroup" [pid 11958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11952] <... futex resumed>) = 0 [pid 11958] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11952] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11959] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11959] <... symlink resumed>) = 0 [pid 11958] <... openat resumed>) = 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11959] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", [pid 11959] <... symlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./556", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11960] chdir("./585" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11958] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11952] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11960] <... chdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 5045] openat(AT_FDCWD, "./556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11959] <... openat resumed>) = 3 [pid 11959] write(3, "1000", 4 [pid 5045] newfstatat(3, "", [pid 11960] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11959] <... write resumed>) = 4 [pid 5047] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11960] <... prctl resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11959] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11959] <... close resumed>) = 0 [pid 11959] symlink("/dev/binderfs", "./binderfs" [pid 5047] newfstatat(AT_FDCWD, "./570/cgroup.net", [pid 5045] getdents64(3, [pid 11960] setpgid(0, 0 [pid 11959] <... symlink resumed>) = 0 [pid 5049] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 11960] <... setpgid resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./570/cgroup.net" [pid 11960] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11959] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./556/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11959] <... futex resumed>) = 0 [pid 11959] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11959] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11959] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] getdents64(3, [pid 11959] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(AT_FDCWD, "./556/cgroup.cpu", [pid 11959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11960] <... symlink resumed>) = 0 [pid 11959] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 11960] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 5045] unlink("./556/cgroup.cpu" [pid 11959] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] rmdir("./570" [pid 5045] <... unlink resumed>) = 0 [pid 11959] <... mprotect resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./573/cgroup.net", [pid 5047] <... rmdir resumed>) = 0 [pid 11960] <... symlink resumed>) = 0 [pid 11959] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11960] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] unlink("./573/cgroup.net" [pid 11959] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./556/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11959] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./571", 0777 [pid 5045] newfstatat(AT_FDCWD, "./556/binderfs", [pid 11960] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 11961 attached [pid 11959] <... clone3 resumed> => {parent_tid=[1174]}, 88) = 1174 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11961] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11959] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] getdents64(3, [pid 11961] <... rseq resumed>) = 0 [pid 11959] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] unlink("./556/binderfs" [pid 11961] set_robust_list(0x7f504ff7f9a0, 24 [pid 11959] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11958] +++ killed by SIGIO +++ [pid 11952] +++ killed by SIGIO +++ [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11961] <... set_robust_list resumed>) = 0 [pid 11960] <... openat resumed>) = 3 [pid 11959] <... futex resumed>) = 0 [pid 5049] close(3 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1136, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... unlink resumed>) = 0 [pid 11961] rt_sigprocmask(SIG_SETMASK, [], [pid 11960] write(3, "1000", 4 [pid 11959] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... close resumed>) = 0 [pid 11961] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11961] open(".", O_RDONLY [pid 5049] rmdir("./573" [pid 11960] <... write resumed>) = 4 [pid 11961] <... open resumed>) = 3 [pid 11960] close(3 [pid 5049] <... rmdir resumed>) = 0 [pid 5045] umount2("./556/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11961] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11960] <... close resumed>) = 0 [pid 11961] <... futex resumed>) = 1 [pid 11959] <... futex resumed>) = 0 [pid 11961] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11959] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11959] <... futex resumed>) = 0 [pid 11961] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11959] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11961] <... fcntl resumed>) = 0 [pid 11961] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11959] <... futex resumed>) = 0 [pid 11961] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11959] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11959] <... futex resumed>) = 0 [pid 11961] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11959] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11960] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 11962 attached [pid 11962] set_robust_list(0x555556ac56a0, 24 [pid 11959] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11960] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./556/cgroup", [pid 11962] <... set_robust_list resumed>) = 0 [pid 11961] <... openat resumed>) = 4 [pid 11959] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11962] chdir("./571" [pid 11960] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] mkdir("./574", 0777 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1144 [pid 11961] +++ killed by SIGIO +++ [pid 11962] <... chdir resumed>) = 0 [pid 11960] <... futex resumed>) = 0 [pid 11959] +++ killed by SIGIO +++ [pid 5049] <... mkdir resumed>) = 0 [pid 5045] unlink("./556/cgroup" [pid 11962] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11960] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11962] <... prctl resumed>) = 0 [pid 11960] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11962] setpgid(0, 0) = 0 [pid 11962] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 11962] <... symlink resumed>) = 0 [pid 11962] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu") = 0 [pid 11962] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 11962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 11962] write(3, "1000", 4) = 4 [pid 11962] close(3) = 0 [pid 11962] symlink("/dev/binderfs", "./binderfs" [pid 11960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./556/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./556/blkio.bfq.io_wait_time_recursive", [pid 11962] <... symlink resumed>) = 0 [pid 11962] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11962] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 11962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11962] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11962] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11964 attached ./strace-static-x86_64: Process 11963 attached [pid 11964] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11962] <... clone3 resumed> => {parent_tid=[1145]}, 88) = 1145 [pid 5046] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11960] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11964] <... rseq resumed>) = 0 [pid 11963] set_robust_list(0x555556ac56a0, 24 [pid 11962] rt_sigprocmask(SIG_SETMASK, [], [pid 11964] set_robust_list(0x7f504ff7f9a0, 24 [pid 11962] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11964] <... set_robust_list resumed>) = 0 [pid 11963] <... set_robust_list resumed>) = 0 [pid 11962] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] unlink("./556/blkio.bfq.io_wait_time_recursive" [pid 11964] rt_sigprocmask(SIG_SETMASK, [], [pid 11963] chdir("./574" [pid 11962] <... futex resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11964] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11962] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11964] open(".", O_RDONLY [pid 11963] <... chdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11964] <... open resumed>) = 3 [pid 11963] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11960] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] newfstatat(3, "", [pid 11960] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11964] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11963] <... prctl resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11964] <... futex resumed>) = 1 [pid 11963] setpgid(0, 0 [pid 11962] <... futex resumed>) = 0 [pid 11960] <... mprotect resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1173, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] getdents64(3, [pid 11964] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11962] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./556/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11964] <... fcntl resumed>) = 0 [pid 11963] <... setpgid resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11964] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11963] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11962] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11964] <... futex resumed>) = 0 [pid 11962] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11964] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11962] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11962] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11960] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./556/cgroup.net", [pid 11964] <... futex resumed>) = 0 [pid 11962] <... futex resumed>) = 1 [pid 5046] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11964] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11963] <... symlink resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(3, "", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./556/cgroup.net" [pid 11960] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./567/cgroup.cpu", [pid 11964] <... openat resumed>) = 4 [pid 11963] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 11962] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1150 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] unlink("./567/cgroup.cpu" [pid 5045] getdents64(3, [pid 11963] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] getdents64(3, [pid 11964] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] close(3 [pid 11963] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11962] <... futex resumed>) = ? ./strace-static-x86_64: Process 11965 attached [pid 11963] <... symlink resumed>) = 0 [pid 11960] <... clone3 resumed> => {parent_tid=[1175]}, 88) = 1175 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 11965] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11965] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11965] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11960] rt_sigprocmask(SIG_SETMASK, [], [pid 11963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./556" [pid 11963] <... openat resumed>) = 3 [pid 5051] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11964] +++ killed by SIGIO +++ [pid 11962] +++ killed by SIGIO +++ [pid 5045] <... rmdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11963] write(3, "1000", 4 [pid 11960] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./567/binderfs", [pid 5045] mkdir("./557", 0777 [pid 11963] <... write resumed>) = 4 [pid 11960] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11965] <... futex resumed>) = 0 [pid 11960] <... futex resumed>) = 1 [pid 11965] open(".", O_RDONLY [pid 11963] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11960] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1144, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11965] <... open resumed>) = 3 [pid 11965] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11965] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11963] <... close resumed>) = 0 [pid 11960] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] unlink("./585/cgroup.cpu" [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11963] symlink("/dev/binderfs", "./binderfs" [pid 11960] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11965] <... futex resumed>) = 0 [pid 11963] <... symlink resumed>) = 0 [pid 11960] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./567/binderfs"./strace-static-x86_64: Process 11966 attached [pid 11965] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11966] set_robust_list(0x555556ac56a0, 24 [pid 11965] <... fcntl resumed>) = 0 [pid 11963] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11960] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1117 [pid 11966] <... set_robust_list resumed>) = 0 [pid 11965] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11963] <... futex resumed>) = 0 [pid 11960] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11966] chdir("./557" [pid 11965] <... futex resumed>) = 0 [pid 11963] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11960] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11966] <... chdir resumed>) = 0 [pid 11965] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11963] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11960] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11966] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11965] <... openat resumed>) = 4 [pid 11963] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11966] <... prctl resumed>) = 0 [pid 11963] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11960] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] newfstatat(AT_FDCWD, "./585/binderfs", [pid 11966] setpgid(0, 0 [pid 11963] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11966] <... setpgid resumed>) = 0 [pid 11965] +++ killed by SIGIO +++ [pid 11963] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11966] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11963] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./585/binderfs" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11963] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./567/cgroup", [pid 11963] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11966] <... symlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5046] unlink("./567/cgroup" [pid 11966] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11963] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11963] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./585/cgroup", [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5047] getdents64(3, ./strace-static-x86_64: Process 11967 attached 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11967] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11963] <... clone3 resumed> => {parent_tid=[1151]}, 88) = 1151 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11967] <... rseq resumed>) = 0 [pid 11963] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11967] set_robust_list(0x7f504ff7f9a0, 24 [pid 11966] <... symlink resumed>) = 0 [pid 11963] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11960] +++ killed by SIGIO +++ [pid 5051] unlink("./585/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11967] <... set_robust_list resumed>) = 0 [pid 11966] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11963] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 11967] rt_sigprocmask(SIG_SETMASK, [], [pid 11966] <... symlink resumed>) = 0 [pid 11963] <... futex resumed>) = 0 [pid 5051] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1174, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11967] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11963] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 11967] open(".", O_RDONLY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] unlink("./571/cgroup.cpu" [pid 5046] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 11967] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", [pid 11967] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11966] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11967] <... futex resumed>) = 1 [pid 11963] <... futex resumed>) = 0 [pid 11967] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11963] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11967] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11963] <... futex resumed>) = 0 [pid 5051] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 11967] <... fcntl resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11967] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11963] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11967] <... futex resumed>) = 0 [pid 11963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11967] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11963] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11966] write(3, "1000", 4 [pid 5046] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11966] <... write resumed>) = 4 [pid 5050] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11967] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11963] <... futex resumed>) = 0 [pid 11967] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11963] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11967] <... openat resumed>) = 4 [pid 11966] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11967] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11963] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./585/cgroup.net", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./567/cgroup.net", [pid 11966] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./571/binderfs", [pid 11966] symlink("/dev/binderfs", "./binderfs" [pid 5051] unlink("./585/cgroup.net" [pid 5050] newfstatat(3, "", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11966] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] unlink("./567/cgroup.net" [pid 5051] getdents64(3, [pid 5050] getdents64(3, [pid 5047] unlink("./571/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 11966] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] close(3 [pid 11967] +++ killed by SIGIO +++ [pid 11963] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] rmdir("./585" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1150, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11966] <... futex resumed>) = 0 [pid 5050] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... restart_syscall resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./571/cgroup", [pid 5051] mkdir("./586", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./567" [pid 5051] <... mkdir resumed>) = 0 [pid 5050] unlink("./585/cgroup.cpu" [pid 5049] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./571/cgroup" [pid 5046] <... rmdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11966] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./568", 0777 [pid 11966] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 11966] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11966] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11968 attached [pid 11966] <... mprotect resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./585/binderfs", [pid 5049] newfstatat(3, "", [pid 11968] set_robust_list(0x555556ac56a0, 24 [pid 11966] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1175 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11968] <... set_robust_list resumed>) = 0 [pid 11966] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] unlink("./585/binderfs") = 0 [pid 5047] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1138 ./strace-static-x86_64: Process 11969 attached [pid 11968] chdir("./586" [pid 11969] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] getdents64(3, [pid 11969] chdir("./568") = 0 [pid 11969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11969] setpgid(0, 0 [pid 11968] <... chdir resumed>) = 0 [pid 11969] <... setpgid resumed>) = 0 [pid 11969] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 11968] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11966] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11970 attached [pid 11969] <... symlink resumed>) = 0 [pid 11968] <... prctl resumed>) = 0 [pid 11966] <... clone3 resumed> => {parent_tid=[1118]}, 88) = 1118 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11970] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11968] setpgid(0, 0 [pid 11966] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(AT_FDCWD, "./585/cgroup", [pid 11969] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 11970] <... rseq resumed>) = 0 [pid 11969] <... symlink resumed>) = 0 [pid 11968] <... setpgid resumed>) = 0 [pid 11970] set_robust_list(0x7f504ff7f9a0, 24 [pid 11966] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 11970] <... set_robust_list resumed>) = 0 [pid 11966] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./585/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./574/cgroup.cpu", [pid 11969] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 11970] rt_sigprocmask(SIG_SETMASK, [], [pid 11969] <... symlink resumed>) = 0 [pid 11968] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 11969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11966] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11966] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11969] <... openat resumed>) = 3 [pid 11969] write(3, "1000", 4 [pid 11970] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11969] <... write resumed>) = 4 [pid 11969] close(3) = 0 [pid 11969] symlink("/dev/binderfs", "./binderfs" [pid 5047] unlink("./571/cgroup.net" [pid 11970] open(".", O_RDONLY [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11969] <... symlink resumed>) = 0 [pid 11968] <... symlink resumed>) = 0 [pid 5049] unlink("./574/cgroup.cpu" [pid 11969] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 11969] <... futex resumed>) = 0 [pid 11969] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11969] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11968] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11970] <... open resumed>) = 3 [pid 11969] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11968] <... symlink resumed>) = 0 [pid 11969] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11970] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11968] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 11970] <... futex resumed>) = 1 [pid 11969] <... mprotect resumed>) = 0 [pid 11968] <... symlink resumed>) = 0 [pid 11966] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./574/binderfs", [pid 11966] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 11966] <... futex resumed>) = 0 [pid 11966] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11970] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11969] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 11970] <... fcntl resumed>) = 0 [pid 11969] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11969] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11970] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./574/binderfs" [pid 5047] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5047] rmdir("./571" [pid 5050] newfstatat(AT_FDCWD, "./585/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11970] <... futex resumed>) = 1 [pid 5050] unlink("./585/cgroup.net" [pid 5049] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 11971 attached [pid 11970] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11968] <... openat resumed>) = 3 [pid 11966] <... futex resumed>) = 0 [pid 11970] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11966] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11968] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11971] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11970] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11969] <... clone3 resumed> => {parent_tid=[1139]}, 88) = 1139 [pid 11968] <... write resumed>) = 4 [pid 11966] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./574/cgroup", [pid 11971] <... rseq resumed>) = 0 [pid 11971] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11971] <... set_robust_list resumed>) = 0 [pid 11971] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 11971] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] unlink("./574/cgroup" [pid 11970] <... openat resumed>) = 4 [pid 11969] rt_sigprocmask(SIG_SETMASK, [], [pid 11968] close(3 [pid 11966] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... unlink resumed>) = 0 [pid 5047] mkdir("./572", 0777 [pid 11969] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11968] <... close resumed>) = 0 [pid 11968] symlink("/dev/binderfs", "./binderfs" [pid 11969] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 5049] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11968] <... symlink resumed>) = 0 [pid 5050] close(3 [pid 5049] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 11971] <... futex resumed>) = 0 [pid 11969] <... futex resumed>) = 1 [pid 5050] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11971] open(".", O_RDONLY [pid 5050] rmdir("./585" [pid 5047] <... mkdir resumed>) = 0 [pid 11971] <... open resumed>) = 3 [pid 11969] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... rmdir resumed>) = 0 [pid 5049] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 11971] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11968] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11968] <... futex resumed>) = 0 [pid 11968] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11969] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11971] <... futex resumed>) = 0 [pid 11969] <... futex resumed>) = 0 [pid 11968] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 11971] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11969] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] mkdir("./586", 0777 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11968] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11971] <... fcntl resumed>) = 0 [pid 11968] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11971] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] newfstatat(AT_FDCWD, "./574/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11971] <... futex resumed>) = 1 [pid 11971] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11969] <... futex resumed>) = 0 [pid 11969] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] unlink("./574/cgroup.net" [pid 11971] <... futex resumed>) = 0 [pid 11969] <... futex resumed>) = 1 [pid 11968] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... unlink resumed>) = 0 [pid 11971] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11969] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11971] <... openat resumed>) = 4 [pid 11968] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11968] <... mprotect resumed>) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./574") = 0 [pid 11969] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11968] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 11968] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11972 attached [pid 11971] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11969] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- ./strace-static-x86_64: Process 11973 attached [pid 11972] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1176 [pid 11972] <... set_robust_list resumed>) = 0 [pid 11973] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11968] <... clone3 resumed> => {parent_tid=[1176]}, 88) = 1176 [pid 11973] <... rseq resumed>) = 0 [pid 11968] rt_sigprocmask(SIG_SETMASK, [], [pid 11973] set_robust_list(0x7f504ff7f9a0, 24./strace-static-x86_64: Process 11974 attached ) = 0 [pid 11972] chdir("./586" [pid 11971] <... futex resumed>) = ? [pid 11968] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] mkdir("./575", 0777 [pid 11974] set_robust_list(0x555556ac56a0, 24 [pid 11973] rt_sigprocmask(SIG_SETMASK, [], [pid 11972] <... chdir resumed>) = 0 [pid 11971] +++ killed by SIGIO +++ [pid 11970] +++ killed by SIGIO +++ [pid 11968] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11966] +++ killed by SIGIO +++ [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1146 [pid 11973] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11968] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 11973] open(".", O_RDONLY [pid 11974] <... set_robust_list resumed>) = 0 [pid 11972] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11974] chdir("./572" [pid 11973] <... open resumed>) = 3 [pid 11972] <... prctl resumed>) = 0 [pid 11968] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1117, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11974] <... chdir resumed>) = 0 [pid 11972] setpgid(0, 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 11974] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11973] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11972] <... setpgid resumed>) = 0 [pid 11968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... restart_syscall resumed>) = 0 [pid 11973] <... futex resumed>) = 0 [pid 11968] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11975 attached [pid 11974] <... prctl resumed>) = 0 [pid 11973] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11972] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11969] +++ killed by SIGIO +++ [pid 11975] set_robust_list(0x555556ac56a0, 24 [pid 11974] setpgid(0, 0 [pid 11972] <... symlink resumed>) = 0 [pid 11975] <... set_robust_list resumed>) = 0 [pid 11972] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1152 [pid 11975] chdir("./575" [pid 11974] <... setpgid resumed>) = 0 [pid 11973] <... fcntl resumed>) = 0 [pid 11972] <... symlink resumed>) = 0 [pid 11968] <... futex resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1138, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11974] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11973] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11968] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./557", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11975] <... chdir resumed>) = 0 [pid 11973] <... futex resumed>) = 0 [pid 11972] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11975] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11974] <... symlink resumed>) = 0 [pid 11973] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11972] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11975] <... prctl resumed>) = 0 [pid 11975] setpgid(0, 0 [pid 5046] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11975] <... setpgid resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11975] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11974] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 11974] <... symlink resumed>) = 0 [pid 11972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11975] <... symlink resumed>) = 0 [pid 5046] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11975] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11975] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./568/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11975] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 11972] <... openat resumed>) = 3 [pid 5046] unlink("./568/cgroup.cpu" [pid 11975] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11972] write(3, "1000", 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11972] <... write resumed>) = 4 [pid 11972] close(3 [pid 11975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11972] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11975] <... openat resumed>) = 3 [pid 11974] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11972] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./568/binderfs", [pid 11973] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11968] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11975] write(3, "1000", 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... openat resumed>) = 3 [pid 11975] <... write resumed>) = 4 [pid 11974] <... symlink resumed>) = 0 [pid 11973] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11972] <... symlink resumed>) = 0 [pid 11968] <... futex resumed>) = 0 [pid 5046] unlink("./568/binderfs" [pid 5045] newfstatat(3, "", [pid 11974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11968] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 11975] close(3 [pid 11974] <... openat resumed>) = 3 [pid 11973] <... openat resumed>) = 4 [pid 11972] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11968] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11975] <... close resumed>) = 0 [pid 11973] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11968] restart_syscall(<... resuming interrupted futex ...> [pid 5046] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11975] symlink("/dev/binderfs", "./binderfs" [pid 11968] <... restart_syscall resumed>) = ? [pid 5045] getdents64(3, [pid 11972] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11972] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11974] write(3, "1000", 4 [pid 11972] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./568/cgroup", [pid 11974] <... write resumed>) = 4 [pid 11972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11975] <... symlink resumed>) = 0 [pid 11974] close(3 [pid 11972] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] umount2("./557/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11974] <... close resumed>) = 0 [pid 11972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] unlink("./568/cgroup" [pid 11974] symlink("/dev/binderfs", "./binderfs" [pid 11972] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11975] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11974] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./557/cgroup.cpu", [pid 11975] <... futex resumed>) = 0 [pid 11972] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11975] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11975] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11975] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] unlink("./557/cgroup.cpu" [pid 11975] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11974] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11972] <... mprotect resumed>) = 0 [pid 5046] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11974] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11975] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11974] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11972] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 11975] <... mmap resumed>) = 0x7f504ff5f000 [pid 11974] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11975] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11974] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11974] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11972] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11974] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./557/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11976 attached [pid 11974] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... unlink resumed>) = 0 [pid 11976] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11974] <... mprotect resumed>) = 0 [pid 11972] <... clone3 resumed> => {parent_tid=[1177]}, 88) = 1177 [pid 11976] <... rseq resumed>) = 0 [pid 11972] rt_sigprocmask(SIG_SETMASK, [], [pid 11976] set_robust_list(0x7f504ff7f9a0, 24 [pid 11975] <... mprotect resumed>) = 0 [pid 11974] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11976] <... set_robust_list resumed>) = 0 [pid 11972] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11974] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11976] rt_sigprocmask(SIG_SETMASK, [], [pid 11975] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11972] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./557/binderfs", [pid 11976] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11974] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11973] +++ killed by SIGIO +++ [pid 11972] <... futex resumed>) = 0 [pid 11968] +++ killed by SIGIO +++ [pid 5046] newfstatat(AT_FDCWD, "./568/cgroup.net", [pid 11976] open(".", O_RDONLY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 11977 attached [pid 11976] <... open resumed>) = 3 [pid 11974] <... clone3 resumed> => {parent_tid=[1147]}, 88) = 1147 [pid 11972] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./568/cgroup.net" [pid 11977] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11975] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11974] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11977] <... rseq resumed>) = 0 [pid 11976] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11975] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11974] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1175, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] unlink("./557/binderfs" [pid 11977] set_robust_list(0x7f504ff7f9a0, 24 [pid 11976] <... futex resumed>) = 0 [pid 11974] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11972] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11977] <... set_robust_list resumed>) = 0 [pid 11976] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11974] <... futex resumed>) = 0 [pid 11972] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11978 attached [pid 11977] rt_sigprocmask(SIG_SETMASK, [], [pid 11976] <... fcntl resumed>) = 0 [pid 11975] <... clone3 resumed> => {parent_tid=[1153]}, 88) = 1153 [pid 11974] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11972] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11978] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11977] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11976] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./557/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11977] open(".", O_RDONLY [pid 11976] <... futex resumed>) = 0 [pid 11972] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] close(3 [pid 11976] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11972] <... futex resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 11978] <... rseq resumed>) = 0 [pid 11976] <... openat resumed>) = 4 [pid 11975] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11978] set_robust_list(0x7f504ff7f9a0, 24 [pid 11975] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./557/cgroup", [pid 5046] rmdir("./568" [pid 5051] <... openat resumed>) = 3 [pid 11978] <... set_robust_list resumed>) = 0 [pid 11975] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11978] rt_sigprocmask(SIG_SETMASK, [], [pid 11977] <... open resumed>) = 3 [pid 11975] <... futex resumed>) = 0 [pid 11978] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11977] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./557/cgroup" [pid 11975] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11978] open(".", O_RDONLY [pid 11976] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11972] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11976] <... futex resumed>) = ? [pid 5046] mkdir("./569", 0777 [pid 11978] <... open resumed>) = 3 [pid 11977] <... futex resumed>) = 1 [pid 11976] +++ killed by SIGIO +++ [pid 11974] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11978] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11977] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./557/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11978] <... futex resumed>) = 1 [pid 11977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11975] <... futex resumed>) = 0 [pid 11974] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11978] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11977] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11975] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11974] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11978] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11977] <... fcntl resumed>) = 0 [pid 11975] <... futex resumed>) = 0 [pid 11974] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] newfstatat(AT_FDCWD, "./557/blkio.bfq.io_wait_time_recursive", [pid 11978] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11977] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11975] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11972] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11978] <... fcntl resumed>) = 0 [pid 11977] <... futex resumed>) = 0 [pid 11974] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11978] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1176, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11978] <... futex resumed>) = 1 [pid 11977] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11975] <... futex resumed>) = 0 [pid 11974] <... futex resumed>) = 0 [pid 5051] unlink("./586/cgroup.cpu" [pid 5045] unlink("./557/blkio.bfq.io_wait_time_recursive" [pid 11978] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11974] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 11975] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 11978] <... futex resumed>) = 0 [pid 11975] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11978] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000./strace-static-x86_64: Process 11979 attached ) = 4 [pid 11977] <... openat resumed>) = 4 [pid 11975] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1140 [pid 5045] umount2("./557/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11979] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11978] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11978] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./557/cgroup.net", [pid 11979] <... set_robust_list resumed>) = 0 [pid 11977] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11979] chdir("./569" [pid 11978] <... futex resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./586/binderfs", [pid 5050] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11974] <... futex resumed>) = ? [pid 11979] <... chdir resumed>) = 0 [pid 11978] +++ killed by SIGIO +++ [pid 11975] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./557/cgroup.net" [pid 11979] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 5051] unlink("./586/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 11979] setpgid(0, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11977] +++ killed by SIGIO +++ [pid 11974] +++ killed by SIGIO +++ [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1152, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11979] <... setpgid resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 11979] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./586/cgroup.cpu" [pid 5045] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 11979] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1146, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5049] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5045] close(3 [pid 5051] newfstatat(AT_FDCWD, "./586/cgroup", [pid 5047] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./586/binderfs", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./575/cgroup.cpu", [pid 11979] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./586/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] rmdir("./557" [pid 5049] unlink("./575/cgroup.cpu") = 0 [pid 5049] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./575/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5051] unlink("./586/cgroup" [pid 5049] unlink("./575/binderfs") = 0 [pid 5049] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./575/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./575/cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./575/blkio.bfq.io_wait_time_recursive") = 0 [pid 5049] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 5047] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./575/cgroup.net" [pid 11979] <... symlink resumed>) = 0 [pid 5051] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] mkdir("./558", 0777 [pid 11979] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./575" [pid 5045] <... mkdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 5050] newfstatat(AT_FDCWD, "./586/cgroup", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5050] unlink("./586/cgroup" [pid 5049] mkdir("./576", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 5051] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 11979] <... symlink resumed>) = 0 [pid 5047] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./572/cgroup.cpu", [pid 11979] <... openat resumed>) = 3 ./strace-static-x86_64: Process 11980 attached [pid 11979] write(3, "1000", 4 [pid 5051] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1119 ./strace-static-x86_64: Process 11981 attached [pid 11980] set_robust_list(0x555556ac56a0, 24 [pid 11979] <... write resumed>) = 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 5047] unlink("./572/cgroup.cpu" [pid 11980] <... set_robust_list resumed>) = 0 [pid 11979] close(3 [pid 5051] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 11980] chdir("./558" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11980] <... chdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11980] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11979] <... close resumed>) = 0 [pid 5050] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 5051] unlink("./586/cgroup.net" [pid 11980] <... prctl resumed>) = 0 [pid 11979] symlink("/dev/binderfs", "./binderfs" [pid 5047] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11980] setpgid(0, 0) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11980] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 11979] <... symlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./572/binderfs", [pid 5050] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11979] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] close(3 [pid 5047] unlink("./572/binderfs" [pid 5050] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 11979] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1154 [pid 11980] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11979] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11979] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] unlink("./586/cgroup.net" [pid 11979] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11980] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 11979] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11981] set_robust_list(0x555556ac56a0, 24 [pid 11979] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] rmdir("./586" [pid 5047] newfstatat(AT_FDCWD, "./572/cgroup", [pid 11980] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 11980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... rmdir resumed>) = 0 [pid 11979] <... mmap resumed>) = 0x7f504ff5f000 [pid 11981] <... set_robust_list resumed>) = 0 [pid 11980] <... openat resumed>) = 3 [pid 11980] write(3, "1000", 4) = 4 [pid 11980] close(3) = 0 [pid 11980] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11980] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11981] chdir("./576" [pid 11980] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, [pid 5047] unlink("./572/cgroup" [pid 11981] <... chdir resumed>) = 0 [pid 11979] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] mkdir("./587", 0777 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11980] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11980] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] close(3 [pid 11981] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11980] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11979] <... mprotect resumed>) = 0 [pid 11981] <... prctl resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11981] setpgid(0, 0 [pid 11980] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11981] <... setpgid resumed>) = 0 [pid 5050] rmdir("./586" [pid 5047] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 11982 attached [pid 11980] <... clone3 resumed> => {parent_tid=[1120]}, 88) = 1120 [pid 11982] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11980] rt_sigprocmask(SIG_SETMASK, [], [pid 11979] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11982] <... rseq resumed>) = 0 [pid 11980] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11982] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 11980] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11982] rt_sigprocmask(SIG_SETMASK, [], [pid 11980] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11982] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 11982] open(".", O_RDONLY [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11981] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] unlink("./572/blkio.bfq.io_wait_time_recursive" [pid 11979] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11982] <... open resumed>) = 3 [pid 11982] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11980] <... futex resumed>) = 0 [pid 11982] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11980] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11980] <... futex resumed>) = 0 [pid 11982] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 11980] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11982] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11982] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11980] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11982] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11980] <... futex resumed>) = 0 [pid 11982] <... openat resumed>) = 4 [pid 11980] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] mkdir("./587", 0777 [pid 5047] <... unlink resumed>) = 0 [pid 11979] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11983 attached [pid 11983] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11983] chdir("./587" [pid 11982] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11983] <... chdir resumed>) = 0 [pid 11980] <... futex resumed>) = ? [pid 11981] <... symlink resumed>) = 0 [pid 11983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11981] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] <... mkdir resumed>) = 0 [pid 11983] setpgid(0, 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1177 [pid 11983] <... setpgid resumed>) = 0 [pid 11983] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11981] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11981] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11984 attached [pid 11983] <... symlink resumed>) = 0 [pid 11981] <... symlink resumed>) = 0 [pid 11979] <... clone3 resumed> => {parent_tid=[1141]}, 88) = 1141 [pid 5047] newfstatat(AT_FDCWD, "./572/cgroup.net", [pid 11984] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11979] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11984] <... rseq resumed>) = 0 [pid 11983] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] unlink("./572/cgroup.net" [pid 11984] set_robust_list(0x7f504ff7f9a0, 24 [pid 11983] <... symlink resumed>) = 0 [pid 11981] <... openat resumed>) = 3 [pid 11979] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11984] <... set_robust_list resumed>) = 0 [pid 11981] write(3, "1000", 4 [pid 11979] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11984] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] getdents64(3, [pid 11984] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11983] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 11979] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11984] open(".", O_RDONLY [pid 11981] <... write resumed>) = 4 [pid 5047] close(3 [pid 11984] <... open resumed>) = 3 [pid 11983] <... symlink resumed>) = 0 [pid 11979] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11984] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11981] close(3 [pid 5047] <... close resumed>) = 0 [pid 11984] <... futex resumed>) = 1 [pid 11981] <... close resumed>) = 0 [pid 11979] <... futex resumed>) = 0 [pid 5047] rmdir("./572" [pid 11984] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11983] <... openat resumed>) = 3 [pid 11979] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11983] write(3, "1000", 4 [pid 11981] symlink("/dev/binderfs", "./binderfs" [pid 11979] <... futex resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11984] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11983] <... write resumed>) = 4 [pid 11979] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11984] <... fcntl resumed>) = 0 [pid 11983] close(3 [pid 11984] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11983] <... close resumed>) = 0 [pid 11984] <... futex resumed>) = 1 [pid 11984] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11983] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11981] <... symlink resumed>) = 0 [pid 11979] <... futex resumed>) = 0 ./strace-static-x86_64: Process 11985 attached [pid 11979] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11984] <... futex resumed>) = 0 [pid 11981] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11979] <... futex resumed>) = 1 [pid 5047] mkdir("./573", 0777 [pid 11985] set_robust_list(0x555556ac56a0, 24 [pid 11984] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11983] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11982] +++ killed by SIGIO +++ [pid 11981] <... futex resumed>) = 0 [pid 11980] +++ killed by SIGIO +++ [pid 11979] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1178 [pid 11985] <... set_robust_list resumed>) = 0 [pid 11984] <... openat resumed>) = 4 [pid 11983] <... futex resumed>) = 0 [pid 11981] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11979] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] <... mkdir resumed>) = 0 [pid 11984] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11983] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11979] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11985] chdir("./587" [pid 11983] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11981] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11983] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11981] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1119, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 11981] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 11985] <... chdir resumed>) = 0 [pid 11983] <... mmap resumed>) = 0x7f504ff5f000 [pid 11983] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 11983] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11985] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11981] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] umount2("./558", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11985] <... prctl resumed>) = 0 [pid 11981] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11985] setpgid(0, 0 [pid 11983] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11981] <... mprotect resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11985] <... setpgid resumed>) = 0 [pid 11983] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11986 attached [pid 11985] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] openat(AT_FDCWD, "./558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11986] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11983] <... clone3 resumed> => {parent_tid=[1178]}, 88) = 1178 ./strace-static-x86_64: Process 11987 attached [pid 11986] <... rseq resumed>) = 0 [pid 11983] rt_sigprocmask(SIG_SETMASK, [], [pid 11987] set_robust_list(0x555556ac56a0, 24 [pid 11986] set_robust_list(0x7f504ff7f9a0, 24 [pid 11981] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... openat resumed>) = 3 [pid 11985] <... symlink resumed>) = 0 [pid 11986] <... set_robust_list resumed>) = 0 [pid 11983] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11986] rt_sigprocmask(SIG_SETMASK, [], [pid 11985] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11983] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11987] <... set_robust_list resumed>) = 0 [pid 11986] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11983] <... futex resumed>) = 0 [pid 11987] chdir("./573" [pid 11985] <... symlink resumed>) = 0 [pid 11981] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1148 [pid 5045] newfstatat(3, "", [pid 11986] open(".", O_RDONLY [pid 11985] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 11983] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11987] <... chdir resumed>) = 0 [pid 11986] <... open resumed>) = 3 [pid 11981] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 11988 attached [pid 11987] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11986] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11985] <... symlink resumed>) = 0 [pid 11984] +++ killed by SIGIO +++ [pid 11979] +++ killed by SIGIO +++ [pid 5045] getdents64(3, [pid 11987] <... prctl resumed>) = 0 [pid 11986] <... futex resumed>) = 1 [pid 11983] <... futex resumed>) = 0 [pid 11981] <... clone3 resumed> => {parent_tid=[1155]}, 88) = 1155 [pid 11988] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1140, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11987] setpgid(0, 0 [pid 11986] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11988] <... rseq resumed>) = 0 [pid 11986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11983] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11981] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] umount2("./558/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11988] set_robust_list(0x7f504ff7f9a0, 24 [pid 11987] <... setpgid resumed>) = 0 [pid 11986] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11983] <... futex resumed>) = 0 [pid 11981] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11986] <... fcntl resumed>) = 0 [pid 11983] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./558/cgroup.cpu", [pid 11988] <... set_robust_list resumed>) = 0 [pid 11987] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 11981] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11988] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] unlink("./558/cgroup.cpu" [pid 11986] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11985] <... openat resumed>) = 3 [pid 11983] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./558/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./558/binderfs", [pid 11988] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11986] <... futex resumed>) = 0 [pid 11983] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11981] <... futex resumed>) = 0 [pid 11987] <... symlink resumed>) = 0 [pid 11985] write(3, "1000", 4) = 4 [pid 11985] close(3 [pid 11981] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11985] <... close resumed>) = 0 [pid 11985] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./558/binderfs" [pid 11985] <... symlink resumed>) = 0 [pid 11988] open(".", O_RDONLY [pid 11986] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11983] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./558/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./558/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./558/cgroup" [pid 11986] <... openat resumed>) = 4 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./558/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11987] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./558/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11987] <... symlink resumed>) = 0 [pid 5045] unlink("./558/blkio.bfq.io_wait_time_recursive" [pid 11985] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11988] <... open resumed>) = 3 [pid 5046] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11988] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11987] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 11985] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 11988] <... futex resumed>) = 1 [pid 11985] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11983] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11981] <... futex resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11988] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11985] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11981] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./558/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11988] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11985] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11981] <... futex resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11985] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./558/cgroup.net", [pid 11988] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11981] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11987] <... symlink resumed>) = 0 [pid 11985] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] unlink("./558/cgroup.net") = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 5045] rmdir("./558" [pid 5046] newfstatat(3, "", [pid 11985] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... rmdir resumed>) = 0 [pid 5045] mkdir("./559", 0777 [pid 11988] <... fcntl resumed>) = 0 [pid 11987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11985] <... mprotect resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 11988] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11988] <... futex resumed>) = 1 [pid 11981] <... futex resumed>) = 0 [pid 11988] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11981] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] getdents64(3, [pid 11988] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11981] <... futex resumed>) = 0 [pid 11988] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11981] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11987] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11981] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11988] <... openat resumed>) = 4 [pid 11987] write(3, "1000", 4 [pid 11985] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11981] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11989 attached [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1121 [pid 11989] set_robust_list(0x555556ac56a0, 24) = 0 [pid 11987] <... write resumed>) = 4 [pid 11985] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11988] +++ killed by SIGIO +++ [pid 11989] chdir("./559") = 0 [pid 11989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 11989] setpgid(0, 0) = 0 [pid 11989] symlink("/syzcgroup/unified/syz1", "./cgroup") = 0 [pid 11989] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 11989] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 11981] +++ killed by SIGIO +++ [pid 11985] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 11987] close(3) = 0 [pid 11987] symlink("/dev/binderfs", "./binderfs" [pid 11989] <... symlink resumed>) = 0 [pid 11987] <... symlink resumed>) = 0 [pid 11986] +++ killed by SIGIO +++ [pid 11983] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] unlink("./569/cgroup.cpu" [pid 11985] <... clone3 resumed> => {parent_tid=[1179]}, 88) = 1179 ./strace-static-x86_64: Process 11990 attached [pid 11987] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11990] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 11990] set_robust_list(0x7f504ff7f9a0, 24 [pid 5046] <... unlink resumed>) = 0 [pid 11990] <... set_robust_list resumed>) = 0 [pid 11987] <... futex resumed>) = 0 [pid 11985] rt_sigprocmask(SIG_SETMASK, [], [pid 11990] rt_sigprocmask(SIG_SETMASK, [], [pid 11989] write(3, "1000", 4 [pid 11987] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11985] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1177, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11990] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11989] <... write resumed>) = 4 [pid 11987] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11985] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1154, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 11990] open(".", O_RDONLY [pid 11989] close(3 [pid 5051] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11990] <... open resumed>) = 3 [pid 11989] <... close resumed>) = 0 [pid 11987] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11985] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./569/binderfs", [pid 11989] symlink("/dev/binderfs", "./binderfs") = 0 [pid 11987] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11985] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./569/binderfs" [pid 5051] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11987] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 11990] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11987] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11990] <... futex resumed>) = 1 [pid 11987] <... mprotect resumed>) = 0 [pid 11990] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11989] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11987] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... openat resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 11989] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11985] <... futex resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 11985] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11989] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11985] <... futex resumed>) = 1 [pid 11989] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11990] <... futex resumed>) = 0 [pid 11989] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11985] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11990] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11987] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11990] <... fcntl resumed>) = 0 [pid 11989] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] getdents64(3, [pid 5046] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11990] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11989] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11987] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11991 attached [pid 11990] <... futex resumed>) = 1 [pid 11989] <... mprotect resumed>) = 0 [pid 11985] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11991] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11990] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11989] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11987] <... clone3 resumed> => {parent_tid=[1149]}, 88) = 1149 [pid 11985] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./569/cgroup", [pid 11990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11985] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11990] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11991] <... rseq resumed>) = 0 [pid 11989] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11987] rt_sigprocmask(SIG_SETMASK, [], [pid 11985] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11991] set_robust_list(0x7f504ff7f9a0, 24 [pid 11990] <... openat resumed>) = 4 [pid 11989] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11987] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11985] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 11992 attached [pid 11991] <... set_robust_list resumed>) = 0 [pid 11990] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11987] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11985] restart_syscall(<... resuming interrupted futex ...> [pid 5051] unlink("./587/cgroup.cpu" [pid 5049] <... openat resumed>) = 3 [pid 5046] unlink("./569/cgroup" [pid 11992] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11991] rt_sigprocmask(SIG_SETMASK, [], [pid 11989] <... clone3 resumed> => {parent_tid=[1122]}, 88) = 1122 [pid 11987] <... futex resumed>) = 0 [pid 11985] <... restart_syscall resumed>) = ? [pid 5049] newfstatat(3, "", [pid 5046] <... unlink resumed>) = 0 [pid 11992] <... rseq resumed>) = 0 [pid 11991] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11990] +++ killed by SIGIO +++ [pid 11989] rt_sigprocmask(SIG_SETMASK, [], [pid 11987] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11992] set_robust_list(0x7f504ff7f9a0, 24 [pid 11991] open(".", O_RDONLY [pid 11989] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5046] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11992] <... set_robust_list resumed>) = 0 [pid 11991] <... open resumed>) = 3 [pid 11989] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11992] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./587/binderfs", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11992] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11992] open(".", O_RDONLY [pid 11991] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11989] <... futex resumed>) = 0 [pid 5049] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", [pid 11991] <... futex resumed>) = 1 [pid 11989] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11987] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./576/cgroup.cpu", [pid 11991] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11987] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11991] <... fcntl resumed>) = 0 [pid 11987] <... futex resumed>) = 0 [pid 11991] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11987] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11991] <... futex resumed>) = 0 [pid 5049] unlink("./576/cgroup.cpu" [pid 11991] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11987] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11992] <... open resumed>) = 3 [pid 11987] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11985] +++ killed by SIGIO +++ [pid 5051] unlink("./587/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 11992] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11991] <... futex resumed>) = 0 [pid 11987] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 11991] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11992] <... futex resumed>) = 1 [pid 11989] <... futex resumed>) = 0 [pid 11987] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1178, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11992] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11991] <... openat resumed>) = 4 [pid 11989] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11987] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11991] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11987] restart_syscall(<... resuming interrupted futex ...>) = ? [pid 11992] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11991] +++ killed by SIGIO +++ [pid 11989] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11992] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11989] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./587/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./576/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 11992] <... fcntl resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11992] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./587/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./569/cgroup.net" [pid 11992] <... futex resumed>) = 1 [pid 11989] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11992] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11989] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./576/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 11992] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11989] <... futex resumed>) = 0 [pid 11987] +++ killed by SIGIO +++ [pid 5050] <... openat resumed>) = 3 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1148, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] newfstatat(3, "", [pid 11992] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11989] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11992] <... openat resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 11992] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./576/cgroup", [pid 5047] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11989] <... futex resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 5051] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5046] <... close resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 5046] rmdir("./569" [pid 5049] unlink("./576/cgroup" [pid 5047] newfstatat(3, "", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./587/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./587/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./587/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./587/binderfs", [pid 5049] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5046] mkdir("./570", 0777 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... mkdir resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./587/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./576/blkio.bfq.io_wait_time_recursive" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... close resumed>) = 0 [pid 5050] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11993 attached [pid 11992] +++ killed by SIGIO +++ [pid 11989] +++ killed by SIGIO +++ [pid 5051] rmdir("./587" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11993] set_robust_list(0x555556ac56a0, 24 [pid 5050] newfstatat(AT_FDCWD, "./587/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./576/cgroup.net", [pid 5047] unlink("./573/cgroup.cpu" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1142 [pid 11993] <... set_robust_list resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11993] chdir("./570" [pid 5051] mkdir("./588", 0777 [pid 5050] unlink("./587/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1121, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 11993] <... chdir resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./576/cgroup.net" [pid 5047] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11993] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11993] <... prctl resumed>) = 0 [pid 11993] setpgid(0, 0) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./573/binderfs", [pid 5050] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11993] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", [pid 11993] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] unlink("./573/binderfs" [pid 5045] umount2("./559", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 11994 attached [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11994] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] openat(AT_FDCWD, "./559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11994] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1179 [pid 5049] close(3 [pid 5045] <... openat resumed>) = 3 [pid 11993] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5050] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 5049] <... close resumed>) = 0 [pid 5047] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 11994] chdir("./588" [pid 11993] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] rmdir("./576" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 11994] <... chdir resumed>) = 0 [pid 11993] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./573/cgroup", [pid 5045] getdents64(3, [pid 11994] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... rmdir resumed>) = 0 [pid 11994] <... prctl resumed>) = 0 [pid 11993] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./577", 0777 [pid 11994] setpgid(0, 0 [pid 5050] newfstatat(AT_FDCWD, "./587/cgroup.net", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./573/cgroup" [pid 11994] <... setpgid resumed>) = 0 [pid 11993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] umount2("./559/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11994] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 11994] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11993] <... openat resumed>) = 3 [pid 5050] unlink("./587/cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./559/cgroup.cpu", [pid 11994] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 11994] <... symlink resumed>) = 0 [pid 11993] write(3, "1000", 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./559/cgroup.cpu" [pid 11994] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 11995 attached [pid 11994] <... symlink resumed>) = 0 [pid 5045] umount2("./559/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 11995] set_robust_list(0x555556ac56a0, 24 [pid 5045] newfstatat(AT_FDCWD, "./559/binderfs", [pid 11995] <... set_robust_list resumed>) = 0 [pid 11993] <... write resumed>) = 4 [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1156 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11993] close(3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11995] chdir("./577" [pid 11993] <... close resumed>) = 0 [pid 5050] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./559/binderfs" [pid 11993] symlink("/dev/binderfs", "./binderfs" [pid 5047] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 11995] <... chdir resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11995] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11993] <... symlink resumed>) = 0 [pid 11995] <... prctl resumed>) = 0 [pid 11995] setpgid(0, 0 [pid 11993] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./587" [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./559/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11993] <... futex resumed>) = 0 [pid 5047] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11993] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11993] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11995] <... setpgid resumed>) = 0 [pid 11993] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./573/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11995] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 11994] <... openat resumed>) = 3 [pid 11993] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] newfstatat(AT_FDCWD, "./559/cgroup", [pid 11995] <... symlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./559/cgroup") = 0 [pid 11993] <... mmap resumed>) = 0x7f504ff5f000 [pid 11995] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] <... rmdir resumed>) = 0 [pid 11994] write(3, "1000", 4 [pid 11993] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] mkdir("./588", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./559/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11995] <... symlink resumed>) = 0 [pid 11994] <... write resumed>) = 4 [pid 11993] <... mprotect resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11995] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5045] newfstatat(AT_FDCWD, "./559/blkio.bfq.io_wait_time_recursive", [pid 11995] <... symlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] unlink("./573/cgroup.net" [pid 11994] close(3 [pid 5045] unlink("./559/blkio.bfq.io_wait_time_recursive" [pid 11994] <... close resumed>) = 0 [pid 11993] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 11994] symlink("/dev/binderfs", "./binderfs" [pid 11995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11993] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 11995] <... openat resumed>) = 3 [pid 11994] <... symlink resumed>) = 0 [pid 11993] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 11996 attached [pid 11996] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11993] <... clone3 resumed> => {parent_tid=[1143]}, 88) = 1143 [pid 5045] umount2("./559/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 11996] <... rseq resumed>) = 0 [pid 11993] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11996] set_robust_list(0x7f504ff7f9a0, 24 [pid 11995] write(3, "1000", 4 [pid 11993] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11996] <... set_robust_list resumed>) = 0 [pid 11995] <... write resumed>) = 4 [pid 11993] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./559/cgroup.net", [pid 11996] rt_sigprocmask(SIG_SETMASK, [], [pid 11995] close(3 [pid 11993] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11996] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11995] <... close resumed>) = 0 [pid 11993] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11996] open(".", O_RDONLY) = 3 [pid 11995] symlink("/dev/binderfs", "./binderfs" [pid 11994] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] close(3 [pid 5045] unlink("./559/cgroup.net"./strace-static-x86_64: Process 11997 attached [pid 11996] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11994] <... futex resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 11997] set_robust_list(0x555556ac56a0, 24 [pid 11996] <... futex resumed>) = 1 [pid 11995] <... symlink resumed>) = 0 [pid 11994] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1180 [pid 5047] rmdir("./573" [pid 11997] <... set_robust_list resumed>) = 0 [pid 11994] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] getdents64(3, [pid 11993] <... futex resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 11993] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 11993] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] close(3 [pid 11995] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... close resumed>) = 0 [pid 11995] <... futex resumed>) = 0 [pid 11997] chdir("./588" [pid 11995] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] rmdir("./559" [pid 11994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11997] <... chdir resumed>) = 0 [pid 11996] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11995] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 11995] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 11995] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... rmdir resumed>) = 0 [pid 11994] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11997] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11996] <... fcntl resumed>) = 0 [pid 11997] <... prctl resumed>) = 0 [pid 11996] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11996] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11997] setpgid(0, 0 [pid 11994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11997] <... setpgid resumed>) = 0 [pid 5047] mkdir("./574", 0777 [pid 11995] <... mmap resumed>) = 0x7f504ff5f000 [pid 11994] <... mmap resumed>) = 0x7f504ff5f000 [pid 11993] <... futex resumed>) = 0 [pid 5045] mkdir("./560", 0777 [pid 11997] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 11995] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11993] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... mkdir resumed>) = 0 [pid 11996] <... futex resumed>) = 0 [pid 11995] <... mprotect resumed>) = 0 [pid 11994] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11993] <... futex resumed>) = 1 [pid 11996] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11994] <... mprotect resumed>) = 0 [pid 11993] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11997] <... symlink resumed>) = 0 [pid 11997] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 11996] <... openat resumed>) = 4 [pid 5047] <... mkdir resumed>) = 0 [pid 11994] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11995] rt_sigprocmask(SIG_BLOCK, ~[], [pid 11994] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 11996] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11993] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11995] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11993] restart_syscall(<... resuming interrupted futex ...> [pid 11995] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11993] <... restart_syscall resumed>) = ? [pid 11994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11998 attached [pid 11995] <... clone3 resumed> => {parent_tid=[1157]}, 88) = 1157 [pid 11998] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11995] rt_sigprocmask(SIG_SETMASK, [], [pid 11997] <... symlink resumed>) = 0 [pid 11998] <... rseq resumed>) = 0 [pid 11995] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12000 attached [pid 11997] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12000] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 11998] set_robust_list(0x7f504ff7f9a0, 24 [pid 11995] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12000] <... rseq resumed>) = 0 [pid 11998] <... set_robust_list resumed>) = 0 [pid 11995] <... futex resumed>) = 0 [pid 12000] set_robust_list(0x7f504ff7f9a0, 24 [pid 11998] rt_sigprocmask(SIG_SETMASK, [], [pid 11997] <... symlink resumed>) = 0 [pid 11995] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11994] <... clone3 resumed> => {parent_tid=[1180]}, 88) = 1180 [pid 12000] <... set_robust_list resumed>) = 0 [pid 11998] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12000] rt_sigprocmask(SIG_SETMASK, [], [pid 11998] open(".", O_RDONLY [pid 12000] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11998] <... open resumed>) = 3 [pid 12000] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11998] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 11995] <... futex resumed>) = 0 [pid 11998] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 11995] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 11999 attached [pid 11998] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11995] <... futex resumed>) = 0 [pid 11999] set_robust_list(0x555556ac56a0, 24 [pid 11998] <... fcntl resumed>) = 0 [pid 11995] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11998] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11997] <... openat resumed>) = 3 [pid 11995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11994] rt_sigprocmask(SIG_SETMASK, [], [pid 11998] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12001 attached [pid 11999] <... set_robust_list resumed>) = 0 [pid 11997] write(3, "1000", 4 [pid 11994] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1150 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1123 [pid 12001] set_robust_list(0x555556ac56a0, 24 [pid 11999] chdir("./560" [pid 11998] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11997] <... write resumed>) = 4 [pid 11995] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11994] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12001] <... set_robust_list resumed>) = 0 [pid 11999] <... chdir resumed>) = 0 [pid 11998] <... openat resumed>) = 4 [pid 11997] close(3 [pid 11996] +++ killed by SIGIO +++ [pid 11993] +++ killed by SIGIO +++ [pid 12000] <... futex resumed>) = 0 [pid 11994] <... futex resumed>) = 1 [pid 12000] open(".", O_RDONLY [pid 11999] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 11998] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 11995] <... futex resumed>) = 0 [pid 12000] <... open resumed>) = 3 [pid 11999] <... prctl resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1142, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12001] chdir("./574" [pid 12000] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11999] setpgid(0, 0 [pid 11997] <... close resumed>) = 0 [pid 11994] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12001] <... chdir resumed>) = 0 [pid 12000] <... futex resumed>) = 0 [pid 11999] <... setpgid resumed>) = 0 [pid 11998] +++ killed by SIGIO +++ [pid 11997] symlink("/dev/binderfs", "./binderfs" [pid 11994] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12001] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12000] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11999] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 11994] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12001] <... prctl resumed>) = 0 [pid 12000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11999] <... symlink resumed>) = 0 [pid 11997] <... symlink resumed>) = 0 [pid 11994] <... futex resumed>) = 0 [pid 5046] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12001] setpgid(0, 0 [pid 12000] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11999] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 11997] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11995] +++ killed by SIGIO +++ [pid 11994] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12001] <... setpgid resumed>) = 0 [pid 12000] <... fcntl resumed>) = 0 [pid 11999] <... symlink resumed>) = 0 [pid 11997] <... futex resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1156, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12000] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11999] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12001] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12000] <... futex resumed>) = 1 [pid 11999] <... symlink resumed>) = 0 [pid 11997] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11994] <... futex resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 11997] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] newfstatat(3, "", [pid 11997] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12000] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11997] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11994] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12000] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11999] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11994] <... futex resumed>) = 0 [pid 12001] <... symlink resumed>) = 0 [pid 11997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] getdents64(3, [pid 12001] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12000] <... openat resumed>) = 4 [pid 11999] <... openat resumed>) = 3 [pid 11997] <... mmap resumed>) = 0x7f504ff5f000 [pid 11994] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12001] <... symlink resumed>) = 0 [pid 11999] write(3, "1000", 4 [pid 5046] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12001] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12000] +++ killed by SIGIO +++ [pid 11997] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12001] <... symlink resumed>) = 0 [pid 11999] <... write resumed>) = 4 [pid 11997] <... mprotect resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 12001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 11999] close(3 [pid 11997] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 11999] <... close resumed>) = 0 [pid 12001] <... openat resumed>) = 3 [pid 11999] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 11997] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] newfstatat(3, "", [pid 5046] unlink("./570/cgroup.cpu" [pid 11999] <... symlink resumed>) = 0 [pid 12001] write(3, "1000", 4 [pid 11999] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11997] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11994] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12001] <... write resumed>) = 4 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1179, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12001] close(3 [pid 11999] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12002 attached [pid 11999] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11997] <... clone3 resumed> => {parent_tid=[1181]}, 88) = 1181 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 11999] <... rt_sigaction resumed>NULL, 8) = 0 [pid 11997] rt_sigprocmask(SIG_SETMASK, [], [pid 12002] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12001] <... close resumed>) = 0 [pid 11999] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 11997] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12002] <... rseq resumed>) = 0 [pid 12001] symlink("/dev/binderfs", "./binderfs" [pid 11999] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11997] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./570/binderfs", [pid 12002] set_robust_list(0x7f504ff7f9a0, 24 [pid 12001] <... symlink resumed>) = 0 [pid 11999] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11997] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./577/cgroup.cpu", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12002] <... set_robust_list resumed>) = 0 [pid 12001] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 11999] <... mmap resumed>) = 0x7f504ff5f000 [pid 11997] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12002] rt_sigprocmask(SIG_SETMASK, [], [pid 12001] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12002] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11999] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./577/cgroup.cpu" [pid 5046] unlink("./570/binderfs" [pid 12002] open(".", O_RDONLY [pid 12001] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 11999] <... mprotect resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 12002] <... open resumed>) = 3 [pid 12001] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12001] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(3, "", [pid 12002] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12001] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11999] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12002] <... futex resumed>) = 1 [pid 12001] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 11999] <... rt_sigprocmask resumed>[], 8) = 0 [pid 11997] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12002] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12001] <... mmap resumed>) = 0x7f504ff5f000 [pid 11997] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12002] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12001] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 11999] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11997] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12002] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12001] <... mprotect resumed>) = 0 [pid 11997] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12002] <... fcntl resumed>) = 0 [pid 12001] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] newfstatat(AT_FDCWD, "./577/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./570/cgroup", ./strace-static-x86_64: Process 12003 attached [pid 12002] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12001] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12003] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12002] <... futex resumed>) = 1 [pid 12001] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 11999] <... clone3 resumed> => {parent_tid=[1124]}, 88) = 1124 [pid 11997] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12003] <... rseq resumed>) = 0 [pid 12002] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11999] rt_sigprocmask(SIG_SETMASK, [], [pid 11997] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./588/cgroup.cpu", [pid 5049] unlink("./577/binderfs" [pid 5046] unlink("./570/cgroup"./strace-static-x86_64: Process 12004 attached [pid 12003] set_robust_list(0x7f504ff7f9a0, 24 [pid 12002] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12001] <... clone3 resumed> => {parent_tid=[1151]}, 88) = 1151 [pid 11999] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11997] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12004] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12003] <... set_robust_list resumed>) = 0 [pid 12002] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12001] rt_sigprocmask(SIG_SETMASK, [], [pid 11997] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./588/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 12004] <... rseq resumed>) = 0 [pid 12003] rt_sigprocmask(SIG_SETMASK, [], [pid 12002] <... openat resumed>) = 4 [pid 12001] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 11999] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11997] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... unlink resumed>) = 0 [pid 12003] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12003] open(".", O_RDONLY [pid 11999] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12004] set_robust_list(0x7f504ff7f9a0, 24 [pid 12003] <... open resumed>) = 3 [pid 12002] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12001] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11999] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11997] restart_syscall(<... resuming interrupted futex ...> [pid 5051] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./577/cgroup", [pid 5046] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12003] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12004] <... set_robust_list resumed>) = 0 [pid 12003] <... futex resumed>) = 0 [pid 12001] <... futex resumed>) = 0 [pid 11999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11997] <... restart_syscall resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12004] rt_sigprocmask(SIG_SETMASK, [], [pid 12003] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12002] +++ killed by SIGIO +++ [pid 12001] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 11999] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./588/binderfs", [pid 5049] unlink("./577/cgroup" [pid 12004] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12003] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11999] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", [pid 12004] open(".", O_RDONLY [pid 12003] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 11999] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./588/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12004] <... open resumed>) = 3 [pid 12003] <... fcntl resumed>) = 0 [pid 5049] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12004] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12003] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 12004] <... futex resumed>) = 1 [pid 12003] <... futex resumed>) = 1 [pid 12001] <... futex resumed>) = 0 [pid 11999] <... futex resumed>) = 0 [pid 12003] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 11999] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12003] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 11999] <... futex resumed>) = 0 [pid 12003] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 11999] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12003] <... openat resumed>) = 4 [pid 12004] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12003] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12001] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 11999] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 11997] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12004] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12004] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12001] <... futex resumed>) = 0 [pid 12004] <... fcntl resumed>) = 0 [pid 12001] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12004] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12004] <... futex resumed>) = 0 [pid 12001] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12004] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12001] <... futex resumed>) = 0 [pid 12001] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1180, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12003] +++ killed by SIGIO +++ [pid 5050] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 11999] +++ killed by SIGIO +++ [pid 5050] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1123, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] umount2("./560", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5045] openat(AT_FDCWD, "./560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... openat resumed>) = 3 [pid 5050] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./588/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./588/cgroup.cpu" [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./560/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./560/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./560/cgroup.cpu" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./560/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./588/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./570/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./560/binderfs", [pid 5050] newfstatat(AT_FDCWD, "./588/binderfs", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./588/cgroup" [pid 5049] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./570/cgroup.net" [pid 5050] unlink("./588/binderfs" [pid 5045] unlink("./560/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./577/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./577/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] umount2("./560/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 5045] newfstatat(AT_FDCWD, "./560/cgroup", [pid 5049] getdents64(3, [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./588/cgroup", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./577" [pid 12004] <... openat resumed>) = 4 [pid 5051] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] unlink("./560/cgroup" [pid 5049] mkdir("./578", 0777 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12004] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./588/cgroup" [pid 5046] rmdir("./570" [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12005 attached [pid 12001] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] umount2("./560/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12005] set_robust_list(0x555556ac56a0, 24 [pid 12004] +++ killed by SIGIO +++ [pid 12005] <... set_robust_list resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./588/cgroup.net", [pid 5050] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1158 [pid 5046] mkdir("./571", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 5046] <... mkdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12005] chdir("./578" [pid 5051] unlink("./588/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./560/blkio.bfq.io_wait_time_recursive", [pid 12005] <... chdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 12005] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12001] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5050] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12005] <... prctl resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./560/blkio.bfq.io_wait_time_recursive" [pid 12005] setpgid(0, 0 [pid 5051] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1150, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5051] <... close resumed>) = 0 [pid 12005] <... setpgid resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5050] newfstatat(AT_FDCWD, "./588/cgroup.net", [pid 5047] <... restart_syscall resumed>) = 0 [pid 12005] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] rmdir("./588" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12005] <... symlink resumed>) = 0 [pid 5050] unlink("./588/cgroup.net" [pid 5047] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... rmdir resumed>) = 0 [pid 12005] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5045] umount2("./560/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] mkdir("./589", 0777) = 0 [pid 5050] getdents64(3, [pid 5047] <... openat resumed>) = 3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(3, "", [pid 5050] close(3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 12006 attached [pid 12005] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... close resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12006] set_robust_list(0x555556ac56a0, 24 [pid 12005] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5050] rmdir("./588" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1144 [pid 5045] newfstatat(AT_FDCWD, "./560/cgroup.net", ./strace-static-x86_64: Process 12007 attached [pid 12006] <... set_robust_list resumed>) = 0 [pid 12005] <... symlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] mkdir("./589", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12007] set_robust_list(0x555556ac56a0, 24 [pid 12006] chdir("./571" [pid 12005] <... openat resumed>) = 3 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1181 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./560/cgroup.net" [pid 12007] <... set_robust_list resumed>) = 0 [pid 12006] <... chdir resumed>) = 0 [pid 12005] write(3, "1000", 4 [pid 5047] newfstatat(AT_FDCWD, "./574/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] unlink("./574/cgroup.cpu" [pid 12007] chdir("./589" [pid 12005] <... write resumed>) = 4 [pid 5045] getdents64(3, [pid 12007] <... chdir resumed>) = 0 [pid 12007] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12006] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12005] close(3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12007] <... prctl resumed>) = 0 [pid 12006] <... prctl resumed>) = 0 [pid 12005] <... close resumed>) = 0 [pid 5045] close(3 [pid 12007] setpgid(0, 0 [pid 12006] setpgid(0, 0 [pid 12005] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... close resumed>) = 0 ./strace-static-x86_64: Process 12008 attached [pid 12007] <... setpgid resumed>) = 0 [pid 12006] <... setpgid resumed>) = 0 [pid 12005] <... symlink resumed>) = 0 [pid 5047] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12008] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1182 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12008] <... set_robust_list resumed>) = 0 [pid 12007] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] newfstatat(AT_FDCWD, "./574/binderfs", [pid 5045] rmdir("./560" [pid 12008] chdir("./589" [pid 12006] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12005] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12008] <... chdir resumed>) = 0 [pid 5047] unlink("./574/binderfs" [pid 12008] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12005] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12008] <... prctl resumed>) = 0 [pid 5047] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12008] setpgid(0, 0 [pid 12006] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12008] <... setpgid resumed>) = 0 [pid 12007] <... symlink resumed>) = 0 [pid 12005] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] newfstatat(AT_FDCWD, "./574/cgroup", [pid 12008] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./574/cgroup" [pid 12008] <... symlink resumed>) = 0 [pid 12007] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12006] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12005] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] mkdir("./561", 0777 [pid 12005] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12005] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12007] <... symlink resumed>) = 0 [pid 12005] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12008] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12006] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12005] <... mprotect resumed>) = 0 [pid 12005] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12007] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12008] <... symlink resumed>) = 0 [pid 12007] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 5045] <... mkdir resumed>) = 0 [pid 12008] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12006] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12008] <... symlink resumed>) = 0 [pid 12006] <... symlink resumed>) = 0 [pid 12005] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12008] <... openat resumed>) = 3 [pid 12007] <... openat resumed>) = 3 [pid 12006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 12009 attached [pid 12007] write(3, "1000", 4 [pid 12006] <... openat resumed>) = 3 [pid 5047] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 12007] <... write resumed>) = 4 [pid 12007] close(3) = 0 [pid 12007] symlink("/dev/binderfs", "./binderfs" [pid 12005] <... clone3 resumed> => {parent_tid=[1159]}, 88) = 1159 [pid 12009] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12008] write(3, "1000", 4 [pid 12007] <... symlink resumed>) = 0 [pid 12006] write(3, "1000", 4 [pid 5047] <... unlink resumed>) = 0 [pid 12008] <... write resumed>) = 4 [pid 12007] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12006] <... write resumed>) = 4 [pid 12005] rt_sigprocmask(SIG_SETMASK, [], [pid 12009] <... rseq resumed>) = 0 [pid 12008] close(3 [pid 12007] <... futex resumed>) = 0 [pid 12006] close(3 [pid 12005] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12009] set_robust_list(0x7f504ff7f9a0, 24 [pid 12008] <... close resumed>) = 0 [pid 12007] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12006] <... close resumed>) = 0 [pid 12005] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12009] <... set_robust_list resumed>) = 0 [pid 12008] symlink("/dev/binderfs", "./binderfs" [pid 12007] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12006] symlink("/dev/binderfs", "./binderfs" [pid 12005] <... futex resumed>) = 0 [pid 5047] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12009] rt_sigprocmask(SIG_SETMASK, [], [pid 12007] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12006] <... symlink resumed>) = 0 [pid 12007] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12005] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12008] <... symlink resumed>) = 0 [pid 12006] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12010 attached [pid 12009] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1125 [pid 12007] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12006] <... futex resumed>) = 0 [pid 12010] set_robust_list(0x555556ac56a0, 24 [pid 12009] open(".", O_RDONLY [pid 12008] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12007] <... mprotect resumed>) = 0 [pid 12006] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] newfstatat(AT_FDCWD, "./574/cgroup.net", [pid 12009] <... open resumed>) = 3 [pid 12007] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12006] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12010] <... set_robust_list resumed>) = 0 [pid 12008] <... futex resumed>) = 0 [pid 12007] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12006] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12010] chdir("./561" [pid 12009] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12008] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12007] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12006] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12010] <... chdir resumed>) = 0 [pid 12009] <... futex resumed>) = 1 [pid 12008] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12005] <... futex resumed>) = 0 [pid 5047] unlink("./574/cgroup.net" [pid 12008] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12006] <... mmap resumed>) = 0x7f504ff5f000 [pid 12006] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12005] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12011 attached [pid 12010] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12009] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12008] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12006] <... mprotect resumed>) = 0 [pid 12005] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12011] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12010] <... prctl resumed>) = 0 [pid 12009] <... fcntl resumed>) = 0 [pid 12008] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12007] <... clone3 resumed> => {parent_tid=[1182]}, 88) = 1182 [pid 12006] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12005] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12007] rt_sigprocmask(SIG_SETMASK, [], [pid 12008] <... mmap resumed>) = 0x7f504ff5f000 [pid 12007] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12011] <... rseq resumed>) = 0 [pid 12010] setpgid(0, 0 [pid 12008] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12007] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12006] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12010] <... setpgid resumed>) = 0 [pid 12007] <... futex resumed>) = 0 [pid 12006] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] getdents64(3, [pid 12011] set_robust_list(0x7f504ff7f9a0, 24 [pid 12010] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12009] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12008] <... mprotect resumed>) = 0 [pid 12007] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12012 attached [pid 12011] <... set_robust_list resumed>) = 0 [pid 12006] <... clone3 resumed> => {parent_tid=[1145]}, 88) = 1145 [pid 12012] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12006] rt_sigprocmask(SIG_SETMASK, [], [pid 12012] <... rseq resumed>) = 0 [pid 12011] rt_sigprocmask(SIG_SETMASK, [], [pid 12009] <... futex resumed>) = 1 [pid 12008] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12006] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12005] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12012] set_robust_list(0x7f504ff7f9a0, 24 [pid 12006] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12005] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12012] <... set_robust_list resumed>) = 0 [pid 12011] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12009] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12008] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12006] <... futex resumed>) = 0 [pid 12005] <... futex resumed>) = 0 [pid 5047] close(3 [pid 12012] rt_sigprocmask(SIG_SETMASK, [], [pid 12011] open(".", O_RDONLY [pid 12008] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12006] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12005] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12012] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12012] open(".", O_RDONLY [pid 12009] <... openat resumed>) = 4 [pid 12012] <... open resumed>) = 3 [pid 12012] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12006] <... futex resumed>) = 0 [pid 12012] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12006] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12012] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12006] <... futex resumed>) = 0 [pid 12012] <... fcntl resumed>) = 0 [pid 12012] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12006] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12012] <... futex resumed>) = 0 [pid 12012] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12006] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12012] <... futex resumed>) = 0 [pid 12006] <... futex resumed>) = 1 [pid 12012] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 12010] <... symlink resumed>) = 0 [pid 12006] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12011] <... open resumed>) = 3 [pid 12010] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12009] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12008] <... clone3 resumed> => {parent_tid=[1183]}, 88) = 1183 [pid 5047] <... close resumed>) = 0 [pid 12008] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] rmdir("./574" [pid 12008] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12013 attached [pid 12013] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12012] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12006] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12013] <... rseq resumed>) = 0 [pid 12013] set_robust_list(0x7f504ff7f9a0, 24 [pid 12008] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... rmdir resumed>) = 0 [pid 12013] <... set_robust_list resumed>) = 0 [pid 12008] <... futex resumed>) = 0 [pid 12013] rt_sigprocmask(SIG_SETMASK, [], [pid 12011] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12010] <... symlink resumed>) = 0 [pid 12008] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] mkdir("./575", 0777 [pid 12011] <... futex resumed>) = 1 [pid 12009] +++ killed by SIGIO +++ [pid 12007] <... futex resumed>) = 0 [pid 12005] <... futex resumed>) = ? [pid 12013] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12011] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12010] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5047] <... mkdir resumed>) = 0 [pid 12010] <... symlink resumed>) = 0 [pid 12007] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12013] open(".", O_RDONLY [pid 12011] <... futex resumed>) = 0 [pid 12007] <... futex resumed>) = 1 [pid 12013] <... open resumed>) = 3 [pid 12012] +++ killed by SIGIO +++ [pid 12011] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12007] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12006] +++ killed by SIGIO +++ [pid 12013] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12011] <... fcntl resumed>) = 0 [pid 12013] <... futex resumed>) = 1 [pid 12011] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12008] <... futex resumed>) = 0 [pid 12013] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12011] <... futex resumed>) = 1 [pid 12008] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12007] <... futex resumed>) = 0 [pid 12013] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12011] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12008] <... futex resumed>) = 0 [pid 12007] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12013] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12008] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12007] <... futex resumed>) = 0 [pid 12013] <... fcntl resumed>) = 0 [pid 12011] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12007] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12013] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12011] <... openat resumed>) = 4 [pid 12010] <... openat resumed>) = 3 [pid 12013] <... futex resumed>) = 1 [pid 12008] <... futex resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1144, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12007] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12013] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12011] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12010] write(3, "1000", 4 [pid 12008] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12010] <... write resumed>) = 4 [pid 12010] close(3) = 0 [pid 12010] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12010] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12010] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12010] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12007] ???( [pid 5046] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12013] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12008] <... futex resumed>) = 0 [pid 12007] <... ??? resumed>) = ? [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12010] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12011] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12014 attached [pid 12013] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12010] <... mmap resumed>) = 0x7f504ff5f000 [pid 12008] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12014] set_robust_list(0x555556ac56a0, 24 [pid 12010] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... openat resumed>) = 3 [pid 12014] <... set_robust_list resumed>) = 0 [pid 12007] +++ killed by SIGIO +++ [pid 5046] newfstatat(3, "", [pid 12014] chdir("./575" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12014] <... chdir resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1181, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] getdents64(3, [pid 12014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12010] <... mprotect resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12014] setpgid(0, 0 [pid 12010] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12005] +++ killed by SIGIO +++ [pid 5046] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12014] <... setpgid resumed>) = 0 [pid 5051] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12010] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1152 [pid 12014] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12013] <... openat resumed>) = 4 [pid 12010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12015 attached [pid 12014] <... symlink resumed>) = 0 [pid 12013] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1158, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 12015] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12014] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12010] <... clone3 resumed> => {parent_tid=[1126]}, 88) = 1126 [pid 12008] <... futex resumed>) = ? [pid 12010] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... openat resumed>) = 3 [pid 5049] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12010] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12010] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12010] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5049] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] unlink("./571/cgroup.cpu" [pid 12014] <... symlink resumed>) = 0 [pid 12015] <... rseq resumed>) = 0 [pid 12015] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] <... openat resumed>) = 3 [pid 12015] open(".", O_RDONLY [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(3, "", [pid 5051] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12015] <... open resumed>) = 3 [pid 12014] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12013] +++ killed by SIGIO +++ [pid 12008] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12015] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12014] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12015] <... futex resumed>) = 1 [pid 12014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12010] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1182, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] newfstatat(AT_FDCWD, "./571/binderfs", [pid 12015] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12014] <... openat resumed>) = 3 [pid 12010] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./589/cgroup.cpu" [pid 5050] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12015] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12014] write(3, "1000", 4 [pid 12010] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./571/binderfs" [pid 12015] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12014] <... write resumed>) = 4 [pid 12010] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12015] <... fcntl resumed>) = 0 [pid 12014] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 12015] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12014] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./589/binderfs", [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12015] <... futex resumed>) = 1 [pid 12014] symlink("/dev/binderfs", "./binderfs" [pid 12010] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12015] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12010] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./589/binderfs" [pid 5050] newfstatat(3, "", [pid 5049] unlink("./578/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12015] <... openat resumed>) = 4 [pid 12014] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./571/cgroup", [pid 12014] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12014] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./589/cgroup", [pid 5049] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12014] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./571/cgroup" [pid 12015] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12010] <... futex resumed>) = 0 [pid 12014] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] unlink("./589/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./578/binderfs", [pid 5046] <... unlink resumed>) = 0 [pid 12015] +++ killed by SIGIO +++ [pid 12014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12014] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] unlink("./578/binderfs" [pid 12014] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12014] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12014] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 12014] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] unlink("./589/blkio.bfq.io_wait_time_recursive" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./578/cgroup", [pid 5046] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12014] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./589/cgroup.cpu" [pid 12014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./578/cgroup"./strace-static-x86_64: Process 12016 attached [pid 5051] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12014] <... clone3 resumed> => {parent_tid=[1153]}, 88) = 1153 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12016] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 12010] +++ killed by SIGIO +++ [pid 12016] <... rseq resumed>) = 0 [pid 5050] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12016] set_robust_list(0x7f504ff7f9a0, 24 [pid 12014] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./589/cgroup.net" [pid 5049] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 12016] <... set_robust_list resumed>) = 0 [pid 12014] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12016] rt_sigprocmask(SIG_SETMASK, [], [pid 12014] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./589/binderfs", [pid 12016] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1125, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12014] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./571/cgroup.net" [pid 12016] open(".", O_RDONLY [pid 12014] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./561", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12016] <... open resumed>) = 3 [pid 5051] close(3 [pid 5050] unlink("./589/binderfs" [pid 5049] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 12016] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12016] <... futex resumed>) = 1 [pid 12014] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 12014] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./589" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12016] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12014] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] close(3 [pid 5045] openat(AT_FDCWD, "./561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... rmdir resumed>) = 0 [pid 12014] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] mkdir("./590", 0777 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5050] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./578/cgroup.net", [pid 5046] rmdir("./571" [pid 5045] newfstatat(3, "", [pid 12016] <... fcntl resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./589/cgroup", [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./578/cgroup.net" [pid 5050] unlink("./589/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] mkdir("./572", 0777 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 12017 attached [pid 12016] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12017] set_robust_list(0x555556ac56a0, 24 [pid 12016] <... futex resumed>) = 1 [pid 12014] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1183 [pid 5050] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./561/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12017] <... set_robust_list resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12018 attached [pid 12017] chdir("./590" [pid 12016] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12014] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 5049] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12018] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12017] <... chdir resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./561/cgroup.cpu", [pid 5050] unlink("./589/blkio.bfq.io_wait_time_recursive" [pid 12018] <... set_robust_list resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1146 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12017] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12014] <... futex resumed>) = 0 [pid 5049] rmdir("./578" [pid 5050] <... unlink resumed>) = 0 [pid 5045] unlink("./561/cgroup.cpu") = 0 [pid 12017] <... prctl resumed>) = 0 [pid 12018] chdir("./572" [pid 5049] <... rmdir resumed>) = 0 [pid 12018] <... chdir resumed>) = 0 [pid 12017] setpgid(0, 0 [pid 5045] umount2("./561/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12018] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12017] <... setpgid resumed>) = 0 [pid 12014] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] mkdir("./579", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12018] <... prctl resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12018] setpgid(0, 0 [pid 12017] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./561/binderfs", [pid 12016] <... openat resumed>) = 4 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12018] <... setpgid resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12018] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12017] <... symlink resumed>) = 0 [pid 5050] unlink("./589/cgroup.net" [pid 5045] unlink("./561/binderfs"./strace-static-x86_64: Process 12019 attached [pid 12018] <... symlink resumed>) = 0 [pid 12017] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12019] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1160 [pid 5045] <... unlink resumed>) = 0 [pid 12019] <... set_robust_list resumed>) = 0 [pid 12019] chdir("./579" [pid 12017] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./561/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] <... chdir resumed>) = 0 [pid 12019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12019] setpgid(0, 0) = 0 [pid 12018] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12017] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12016] +++ killed by SIGIO +++ [pid 12014] +++ killed by SIGIO +++ [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1152, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12017] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(AT_FDCWD, "./561/cgroup", [pid 12017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] close(3 [pid 5047] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12019] <... symlink resumed>) = 0 [pid 12018] <... symlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] unlink("./561/cgroup" [pid 5047] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] rmdir("./589" [pid 5047] <... openat resumed>) = 3 [pid 12019] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5045] umount2("./561/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] <... symlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12018] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12017] <... openat resumed>) = 3 [pid 5050] mkdir("./590", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(AT_FDCWD, "./561/blkio.bfq.io_wait_time_recursive", [pid 12019] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5047] getdents64(3, [pid 12019] <... symlink resumed>) = 0 [pid 12018] <... symlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] unlink("./561/blkio.bfq.io_wait_time_recursive" [pid 12019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... mkdir resumed>) = 0 [pid 5047] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./575/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./575/cgroup.cpu" [pid 12019] write(3, "1000", 4 [pid 12018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... unlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12019] <... write resumed>) = 4 [pid 12018] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 12019] close(3) = 0 [pid 12019] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5047] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./575/binderfs", [pid 12017] write(3, "1000", 4 [pid 12019] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12017] <... write resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12019] <... futex resumed>) = 0 [pid 12017] close(3 [pid 5047] unlink("./575/binderfs" [pid 5045] umount2("./561/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12017] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12019] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12017] symlink("/dev/binderfs", "./binderfs" [pid 12018] write(3, "1000", 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12019] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] newfstatat(AT_FDCWD, "./561/cgroup.net", [pid 12019] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12018] <... write resumed>) = 4 [pid 12017] <... symlink resumed>) = 0 [pid 5047] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12019] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./561/cgroup.net" [pid 12018] close(3 [pid 12019] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12019] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12017] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./575/cgroup", [pid 12019] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12020 attached [pid 12018] <... close resumed>) = 0 [pid 12017] <... futex resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1184 [pid 5047] unlink("./575/cgroup" [pid 5045] getdents64(3, [pid 12020] set_robust_list(0x555556ac56a0, 24 [pid 12019] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12018] symlink("/dev/binderfs", "./binderfs" [pid 12017] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12020] <... set_robust_list resumed>) = 0 [pid 12019] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12017] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12019] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12017] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12017] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5045] close(3./strace-static-x86_64: Process 12021 attached [pid 12019] <... clone3 resumed> => {parent_tid=[1161]}, 88) = 1161 [pid 12020] chdir("./590" [pid 12021] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12019] rt_sigprocmask(SIG_SETMASK, [], [pid 12017] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12021] <... rseq resumed>) = 0 [pid 12020] <... chdir resumed>) = 0 [pid 12019] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12018] <... symlink resumed>) = 0 [pid 12017] <... mprotect resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... close resumed>) = 0 [pid 12021] set_robust_list(0x7f504ff7f9a0, 24 [pid 12020] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12019] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12018] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", [pid 5045] rmdir("./561" [pid 12021] <... set_robust_list resumed>) = 0 [pid 12020] <... prctl resumed>) = 0 [pid 12019] <... futex resumed>) = 0 [pid 12018] <... futex resumed>) = 0 [pid 12017] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12021] rt_sigprocmask(SIG_SETMASK, [], [pid 12019] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12021] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12020] setpgid(0, 0) = 0 [pid 12021] open(".", O_RDONLY [pid 12017] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./575/blkio.bfq.io_wait_time_recursive" [pid 12021] <... open resumed>) = 3 [pid 12020] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12017] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... unlink resumed>) = 0 [pid 12021] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12019] <... futex resumed>) = 0 [pid 12021] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12019] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12020] <... symlink resumed>) = 0 [pid 12019] <... futex resumed>) = 0 [pid 12018] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 12021] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12019] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12018] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12022 attached [pid 12021] <... fcntl resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] mkdir("./562", 0777 [pid 12022] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12021] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12020] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12017] <... clone3 resumed> => {parent_tid=[1184]}, 88) = 1184 [pid 5047] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 12022] <... rseq resumed>) = 0 [pid 12021] <... futex resumed>) = 1 [pid 12019] <... futex resumed>) = 0 [pid 12017] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12022] set_robust_list(0x7f504ff7f9a0, 24 [pid 12021] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12019] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12017] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12022] <... set_robust_list resumed>) = 0 [pid 12021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12019] <... futex resumed>) = 0 [pid 12018] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12017] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./575/cgroup.net" [pid 12022] rt_sigprocmask(SIG_SETMASK, [], [pid 12021] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12019] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12017] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12022] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12020] <... symlink resumed>) = 0 [pid 12019] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12017] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12019] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12022] open(".", O_RDONLY [pid 12021] <... openat resumed>) = ? [pid 12020] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12018] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] getdents64(3, [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12022] <... open resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12020] <... symlink resumed>) = 0 [pid 12018] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12022] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12020] <... openat resumed>) = 3 [pid 12018] <... mprotect resumed>) = 0 [pid 5047] close(3 [pid 12022] <... futex resumed>) = 1 [pid 12017] <... futex resumed>) = 0 [pid 12018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12022] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12017] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... close resumed>) = 0 [pid 12020] write(3, "1000", 4) = 4 [pid 12020] close(3./strace-static-x86_64: Process 12023 attached [pid 12018] <... clone3 resumed> => {parent_tid=[1147]}, 88) = 1147 [pid 12022] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] rmdir("./575" [pid 12017] <... futex resumed>) = 0 [pid 12020] <... close resumed>) = 0 [pid 12020] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... rmdir resumed>) = 0 [pid 12020] <... symlink resumed>) = 0 [pid 12022] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12023] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12017] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12018] rt_sigprocmask(SIG_SETMASK, [], [pid 12023] <... rseq resumed>) = 0 [pid 12022] <... fcntl resumed>) = 0 [pid 12018] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] mkdir("./576", 0777./strace-static-x86_64: Process 12024 attached [pid 12023] set_robust_list(0x7f504ff7f9a0, 24 [pid 12022] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12018] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1127 [pid 12024] set_robust_list(0x555556ac56a0, 24 [pid 12023] <... set_robust_list resumed>) = 0 [pid 12018] <... futex resumed>) = 0 [pid 12022] <... futex resumed>) = 1 [pid 12017] <... futex resumed>) = 0 [pid 12023] rt_sigprocmask(SIG_SETMASK, [], [pid 12018] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12024] <... set_robust_list resumed>) = 0 [pid 12023] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12022] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12020] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12017] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12024] chdir("./562" [pid 12023] open(".", O_RDONLY [pid 12022] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12020] <... futex resumed>) = 0 [pid 12017] <... futex resumed>) = 0 [pid 12024] <... chdir resumed>) = 0 [pid 12023] <... open resumed>) = 3 [pid 12022] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12021] +++ killed by SIGIO +++ [pid 12020] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12019] +++ killed by SIGIO +++ [pid 12017] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... mkdir resumed>) = 0 [pid 12022] <... openat resumed>) = 4 [pid 12020] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12024] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12023] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12022] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12024] <... prctl resumed>) = 0 [pid 12020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12017] <... futex resumed>) = ? [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12024] setpgid(0, 0 [pid 12023] <... futex resumed>) = 1 [pid 12020] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12018] <... futex resumed>) = 0 [pid 12024] <... setpgid resumed>) = 0 [pid 12023] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12018] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12020] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1160, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12024] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12020] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12025 attached [pid 12025] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12020] <... clone3 resumed> => {parent_tid=[1185]}, 88) = 1185 [pid 12025] set_robust_list(0x7f504ff7f9a0, 24 [pid 12020] rt_sigprocmask(SIG_SETMASK, [], [pid 12025] <... set_robust_list resumed>) = 0 [pid 12020] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12025] rt_sigprocmask(SIG_SETMASK, [], [pid 12020] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12025] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12020] <... futex resumed>) = 0 [pid 12025] open(".", O_RDONLY [pid 12023] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12018] <... futex resumed>) = 0 [pid 5049] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12023] <... fcntl resumed>) = 0 [pid 12018] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12026 attached [pid 12025] <... open resumed>) = 3 [pid 12020] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12026] set_robust_list(0x555556ac56a0, 24 [pid 12025] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12020] <... futex resumed>) = 0 [pid 12026] <... set_robust_list resumed>) = 0 [pid 12025] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12020] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12026] chdir("./576" [pid 12025] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12020] <... futex resumed>) = 0 [pid 12026] <... chdir resumed>) = 0 [pid 12025] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12020] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12026] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12025] <... fcntl resumed>) = 0 [pid 12024] <... symlink resumed>) = 0 [pid 12023] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... openat resumed>) = 3 [pid 12026] <... prctl resumed>) = 0 [pid 12025] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12026] setpgid(0, 0 [pid 12025] <... futex resumed>) = 1 [pid 12020] <... futex resumed>) = 0 [pid 12026] <... setpgid resumed>) = 0 [pid 12025] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12026] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12025] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12024] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12023] <... futex resumed>) = 0 [pid 12020] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12018] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 12025] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12020] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12025] <... openat resumed>) = 4 [pid 12024] <... symlink resumed>) = 0 [pid 12023] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12018] <... futex resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12018] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12026] <... symlink resumed>) = 0 [pid 12025] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12020] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12025] <... futex resumed>) = ? [pid 12023] <... openat resumed>) = 4 [pid 5049] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12024] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12018] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12023] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1154 [pid 12026] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12024] <... symlink resumed>) = 0 [pid 12022] +++ killed by SIGIO +++ [pid 12017] +++ killed by SIGIO +++ [pid 5049] newfstatat(AT_FDCWD, "./579/cgroup.cpu", [pid 12026] <... symlink resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1183, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12023] +++ killed by SIGIO +++ [pid 5049] unlink("./579/cgroup.cpu" [pid 12026] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12025] +++ killed by SIGIO +++ [pid 12024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12020] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5051] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12024] <... openat resumed>) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./579/binderfs", [pid 12026] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./579/binderfs" [pid 5051] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12024] write(3, "1000", 4 [pid 5051] <... openat resumed>) = 3 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1184, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... unlink resumed>) = 0 [pid 12024] <... write resumed>) = 4 [pid 5051] newfstatat(3, "", [pid 5050] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12026] <... openat resumed>) = 3 [pid 12024] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12024] <... close resumed>) = 0 [pid 5049] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12026] write(3, "1000", 4 [pid 12024] symlink("/dev/binderfs", "./binderfs" [pid 12018] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5050] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12024] <... symlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./579/cgroup", [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12026] <... write resumed>) = 4 [pid 5050] newfstatat(3, "", [pid 5051] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1146, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12026] close(3 [pid 12024] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... restart_syscall resumed>) = 0 [pid 12026] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12024] <... futex resumed>) = 0 [pid 12026] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./590/cgroup.cpu", [pid 12024] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] getdents64(3, [pid 12026] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./579/cgroup" [pid 12024] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12026] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] unlink("./590/cgroup.cpu" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12026] <... futex resumed>) = 0 [pid 12024] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12026] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12024] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./590/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12026] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12024] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", [pid 12026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12024] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./590/cgroup.cpu" [pid 5046] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./579/blkio.bfq.io_wait_time_recursive") = 0 [pid 5049] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./590/binderfs", [pid 12026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./579/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./579/cgroup.net" [pid 5046] newfstatat(3, "", [pid 12024] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12024] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./590/binderfs" [pid 5050] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] getdents64(3, [pid 12026] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./590/binderfs", [pid 5049] close(3) = 0 [pid 5049] rmdir("./579" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12027 attached [pid 12026] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./590/binderfs" [pid 12024] <... clone3 resumed> => {parent_tid=[1128]}, 88) = 1128 [pid 5051] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12026] <... mprotect resumed>) = 0 [pid 12027] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12027] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12027] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12027] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12027] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12026] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12024] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./590/cgroup", [pid 5050] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./572/cgroup.cpu", [pid 12026] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12024] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12024] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./580", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12028 attached [pid 12027] <... futex resumed>) = 0 [pid 12024] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./590/cgroup", [pid 5046] unlink("./572/cgroup.cpu" [pid 12028] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12027] open(".", O_RDONLY [pid 12026] <... clone3 resumed> => {parent_tid=[1155]}, 88) = 1155 [pid 5049] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12028] <... rseq resumed>) = 0 [pid 12026] rt_sigprocmask(SIG_SETMASK, [], [pid 12024] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./590/cgroup" [pid 5050] unlink("./590/cgroup" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12027] <... open resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 12028] set_robust_list(0x7f504ff7f9a0, 24 [pid 12027] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12027] <... futex resumed>) = 1 [pid 12026] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12024] <... futex resumed>) = 0 [pid 12028] <... set_robust_list resumed>) = 0 [pid 12027] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12028] rt_sigprocmask(SIG_SETMASK, [], [pid 12027] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12026] <... futex resumed>) = 0 [pid 12024] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12028] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12027] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12026] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12024] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./572/binderfs", [pid 12028] open(".", O_RDONLY [pid 12027] <... fcntl resumed>) = 0 [pid 12024] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12029 attached [pid 12027] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 12028] <... open resumed>) = 3 [pid 5046] unlink("./572/binderfs" [pid 12029] set_robust_list(0x555556ac56a0, 24 [pid 12027] <... futex resumed>) = 1 [pid 12024] <... futex resumed>) = 0 [pid 12029] <... set_robust_list resumed>) = 0 [pid 12028] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12027] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12024] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1162 [pid 12029] chdir("./580" [pid 12028] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 12027] <... openat resumed>) = 4 [pid 12026] <... futex resumed>) = 0 [pid 12024] <... futex resumed>) = 0 [pid 5050] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12027] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12026] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12024] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12029] <... chdir resumed>) = 0 [pid 12028] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12026] <... futex resumed>) = 0 [pid 12024] <... futex resumed>) = ? [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12029] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12028] <... fcntl resumed>) = 0 [pid 12026] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 12029] <... prctl resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12029] setpgid(0, 0 [pid 5046] newfstatat(AT_FDCWD, "./572/cgroup", [pid 12029] <... setpgid resumed>) = 0 [pid 12028] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12029] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12028] <... futex resumed>) = 1 [pid 5051] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12028] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12026] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12026] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12029] <... symlink resumed>) = 0 [pid 12028] <... futex resumed>) = 0 [pid 12026] <... futex resumed>) = 1 [pid 5051] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 5046] unlink("./572/cgroup" [pid 12028] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12026] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./590/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 12029] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12029] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12028] <... openat resumed>) = 4 [pid 5046] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12027] +++ killed by SIGIO +++ [pid 12024] +++ killed by SIGIO +++ [pid 5046] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", [pid 12029] <... symlink resumed>) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1127, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12028] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... close resumed>) = 0 [pid 5046] unlink("./572/blkio.bfq.io_wait_time_recursive" [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 12029] <... openat resumed>) = 3 [pid 12026] <... futex resumed>) = ? [pid 12029] write(3, "1000", 4 [pid 5051] unlink("./590/cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 12029] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] rmdir("./590" [pid 12029] close(3) = 0 [pid 12029] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] getdents64(3, [pid 5050] <... rmdir resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] close(3 [pid 12029] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./572/cgroup.net", [pid 12029] <... futex resumed>) = 0 [pid 12029] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] rmdir("./590" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12029] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 12029] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] unlink("./572/cgroup.net") = 0 [pid 12029] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12029] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] mkdir("./591", 0777 [pid 12029] <... mprotect resumed>) = 0 [pid 12029] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] getdents64(3, [pid 12029] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] mkdir("./591", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./562", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12029] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12030 attached [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12030] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12029] <... clone3 resumed> => {parent_tid=[1163]}, 88) = 1163 [pid 5046] close(3 [pid 12030] <... rseq resumed>) = 0 [pid 12029] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... mkdir resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12030] set_robust_list(0x7f504ff7f9a0, 24 [pid 12029] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12028] +++ killed by SIGIO +++ [pid 12026] +++ killed by SIGIO +++ [pid 5045] <... openat resumed>) = 3 ./strace-static-x86_64: Process 12031 attached [pid 12030] <... set_robust_list resumed>) = 0 [pid 12029] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] rmdir("./572" [pid 5045] newfstatat(3, "", [pid 12031] set_robust_list(0x555556ac56a0, 24 [pid 12030] rt_sigprocmask(SIG_SETMASK, [], [pid 12029] <... futex resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1185 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1154, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12030] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12029] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./562/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12031] <... set_robust_list resumed>) = 0 [pid 12030] open(".", O_RDONLY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12031] chdir("./591" [pid 5047] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./562/cgroup.cpu", [pid 5047] <... openat resumed>) = 3 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 5045] unlink("./562/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] umount2("./562/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./562/binderfs", [pid 12030] <... open resumed>) = 3 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./562/binderfs" [pid 5046] mkdir("./573", 0777 [pid 12030] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./562/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./562/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./562/cgroup") = 0 [pid 5045] umount2("./562/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./562/blkio.bfq.io_wait_time_recursive", [pid 12030] <... futex resumed>) = 1 [pid 12029] <... futex resumed>) = 0 [pid 12030] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12029] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./576/cgroup.cpu", ./strace-static-x86_64: Process 12032 attached [pid 12031] <... chdir resumed>) = 0 [pid 12030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12029] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12030] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12029] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12031] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] unlink("./576/cgroup.cpu" [pid 5045] unlink("./562/blkio.bfq.io_wait_time_recursive" [pid 12032] set_robust_list(0x555556ac56a0, 24 [pid 12031] <... prctl resumed>) = 0 [pid 12030] <... fcntl resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1186 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12031] setpgid(0, 0 [pid 12030] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12031] <... setpgid resumed>) = 0 [pid 12031] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./562/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12033 attached [pid 12032] <... set_robust_list resumed>) = 0 [pid 12031] <... symlink resumed>) = 0 [pid 12030] <... futex resumed>) = 1 [pid 12029] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./576/binderfs", [pid 12032] chdir("./591" [pid 12030] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12029] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./562/cgroup.net", [pid 12033] set_robust_list(0x555556ac56a0, 24 [pid 12032] <... chdir resumed>) = 0 [pid 12030] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12029] <... futex resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1148 [pid 12033] <... set_robust_list resumed>) = 0 [pid 12032] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12033] chdir("./573" [pid 12031] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] unlink("./576/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12033] <... chdir resumed>) = 0 [pid 12032] <... prctl resumed>) = 0 [pid 12031] <... symlink resumed>) = 0 [pid 12030] <... openat resumed>) = 4 [pid 12029] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 12033] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] unlink("./562/cgroup.net" [pid 12033] <... prctl resumed>) = 0 [pid 12032] setpgid(0, 0 [pid 12030] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12029] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5045] <... unlink resumed>) = 0 [pid 12033] setpgid(0, 0 [pid 12032] <... setpgid resumed>) = 0 [pid 12033] <... setpgid resumed>) = 0 [pid 12030] +++ killed by SIGIO +++ [pid 12031] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5047] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12031] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12033] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] newfstatat(AT_FDCWD, "./576/cgroup", [pid 12032] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3 [pid 12033] <... symlink resumed>) = 0 [pid 5047] unlink("./576/cgroup" [pid 5045] <... close resumed>) = 0 [pid 12033] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... unlink resumed>) = 0 [pid 12032] <... symlink resumed>) = 0 [pid 12031] <... openat resumed>) = 3 [pid 5045] rmdir("./562" [pid 5047] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./576/blkio.bfq.io_wait_time_recursive") = 0 [pid 12031] write(3, "1000", 4) = 4 [pid 12031] close(3) = 0 [pid 12031] symlink("/dev/binderfs", "./binderfs" [pid 5047] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12033] <... symlink resumed>) = 0 [pid 12032] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12031] <... symlink resumed>) = 0 [pid 5045] mkdir("./563", 0777 [pid 12032] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 12033] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./576/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12032] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12033] <... symlink resumed>) = 0 [pid 12032] <... symlink resumed>) = 0 [pid 12029] +++ killed by SIGIO +++ [pid 5047] unlink("./576/cgroup.net"./strace-static-x86_64: Process 12034 attached [pid 12033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12031] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1162, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] <... unlink resumed>) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12034] set_robust_list(0x555556ac56a0, 24 [pid 5047] close(3) = 0 [pid 5047] rmdir("./576" [pid 12032] <... openat resumed>) = 3 [pid 5047] <... rmdir resumed>) = 0 [pid 12033] <... openat resumed>) = 3 [pid 12031] <... futex resumed>) = 0 [pid 12031] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12033] write(3, "1000", 4 [pid 12034] <... set_robust_list resumed>) = 0 [pid 12033] <... write resumed>) = 4 [pid 12032] write(3, "1000", 4 [pid 12034] chdir("./563" [pid 12033] close(3 [pid 12032] <... write resumed>) = 4 [pid 12031] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./577", 0777 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1129 [pid 12034] <... chdir resumed>) = 0 [pid 12033] <... close resumed>) = 0 [pid 12032] close(3 [pid 12031] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12034] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12033] symlink("/dev/binderfs", "./binderfs" [pid 12032] <... close resumed>) = 0 [pid 12031] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12034] <... prctl resumed>) = 0 [pid 12033] <... symlink resumed>) = 0 [pid 12031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... mkdir resumed>) = 0 [pid 12034] setpgid(0, 0 [pid 12032] symlink("/dev/binderfs", "./binderfs" [pid 12031] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... openat resumed>) = 3 [pid 12034] <... setpgid resumed>) = 0 [pid 12033] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12032] <... symlink resumed>) = 0 [pid 12031] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12033] <... futex resumed>) = 0 [pid 12034] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12033] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12031] <... mprotect resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 12033] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12032] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12033] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12032] <... futex resumed>) = 0 [pid 12033] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12034] <... symlink resumed>) = 0 [pid 12033] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12032] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] getdents64(3, [pid 12033] <... mmap resumed>) = 0x7f504ff5f000 [pid 12032] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12034] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12032] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12033] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12032] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12034] <... symlink resumed>) = 0 [pid 12033] <... mprotect resumed>) = 0 [pid 12032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12031] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12033] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12032] <... mmap resumed>) = 0x7f504ff5f000 [pid 12031] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12033] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12032] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] newfstatat(AT_FDCWD, "./580/cgroup.cpu", ./strace-static-x86_64: Process 12035 attached [pid 12034] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12033] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12032] <... mprotect resumed>) = 0 [pid 12031] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12037 attached ./strace-static-x86_64: Process 12036 attached [pid 12035] set_robust_list(0x555556ac56a0, 24 [pid 12034] <... symlink resumed>) = 0 [pid 12037] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12036] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12035] <... set_robust_list resumed>) = 0 [pid 12032] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12031] <... clone3 resumed> => {parent_tid=[1186]}, 88) = 1186 [pid 5049] unlink("./580/cgroup.cpu" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1156 [pid 12037] <... rseq resumed>) = 0 [pid 12036] <... rseq resumed>) = 0 [pid 12035] chdir("./577" [pid 12033] <... clone3 resumed> => {parent_tid=[1149]}, 88) = 1149 [pid 12031] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... unlink resumed>) = 0 [pid 12037] set_robust_list(0x7f504ff7f9a0, 24 [pid 12036] set_robust_list(0x7f504ff7f9a0, 24 [pid 12035] <... chdir resumed>) = 0 [pid 12034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12033] rt_sigprocmask(SIG_SETMASK, [], [pid 12032] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12031] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12037] <... set_robust_list resumed>) = 0 [pid 12036] <... set_robust_list resumed>) = 0 [pid 12035] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12033] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12031] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12037] rt_sigprocmask(SIG_SETMASK, [], [pid 12036] rt_sigprocmask(SIG_SETMASK, [], [pid 12035] <... prctl resumed>) = 0 [pid 12034] <... openat resumed>) = 3 [pid 12033] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12032] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12031] <... futex resumed>) = 0 [pid 5049] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12038 attached [pid 12037] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12036] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12035] setpgid(0, 0 [pid 12034] write(3, "1000", 4 [pid 12033] <... futex resumed>) = 0 [pid 12031] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12038] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12037] open(".", O_RDONLY [pid 12036] open(".", O_RDONLY [pid 12035] <... setpgid resumed>) = 0 [pid 12034] <... write resumed>) = 4 [pid 12033] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12038] <... rseq resumed>) = 0 [pid 12037] <... open resumed>) = 3 [pid 12036] <... open resumed>) = 3 [pid 12032] <... clone3 resumed> => {parent_tid=[1187]}, 88) = 1187 [pid 5049] newfstatat(AT_FDCWD, "./580/binderfs", [pid 12038] set_robust_list(0x7f504ff7f9a0, 24 [pid 12035] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12038] <... set_robust_list resumed>) = 0 [pid 12037] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12036] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12034] close(3 [pid 12032] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12037] <... futex resumed>) = 1 [pid 12036] <... futex resumed>) = 1 [pid 12035] <... symlink resumed>) = 0 [pid 12034] <... close resumed>) = 0 [pid 12033] <... futex resumed>) = 0 [pid 12037] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12036] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12034] symlink("/dev/binderfs", "./binderfs" [pid 12033] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12032] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./580/binderfs" [pid 12038] rt_sigprocmask(SIG_SETMASK, [], [pid 12036] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12035] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12034] <... symlink resumed>) = 0 [pid 12033] <... futex resumed>) = 0 [pid 12032] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12031] <... futex resumed>) = 0 [pid 12038] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12031] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12038] open(".", O_RDONLY [pid 12037] <... futex resumed>) = 0 [pid 12036] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12034] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12033] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12032] <... futex resumed>) = 0 [pid 12031] <... futex resumed>) = 1 [pid 5049] <... unlink resumed>) = 0 [pid 12038] <... open resumed>) = 3 [pid 12037] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12036] <... fcntl resumed>) = 0 [pid 12035] <... symlink resumed>) = 0 [pid 12034] <... futex resumed>) = 0 [pid 12032] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12031] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12035] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12037] <... fcntl resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12037] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12034] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(AT_FDCWD, "./580/cgroup", [pid 12037] <... futex resumed>) = 0 [pid 12036] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12034] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12037] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12036] <... futex resumed>) = 1 [pid 12034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12033] <... futex resumed>) = 0 [pid 12036] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12034] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12033] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12036] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12033] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12036] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12038] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12035] <... symlink resumed>) = 0 [pid 12034] <... mmap resumed>) = 0x7f504ff5f000 [pid 12033] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12038] <... futex resumed>) = 1 [pid 12035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12031] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12038] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12037] <... futex resumed>) = 0 [pid 12036] <... openat resumed>) = 4 [pid 12035] <... openat resumed>) = 3 [pid 12034] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12033] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12032] <... futex resumed>) = 0 [pid 12031] <... futex resumed>) = 1 [pid 5049] unlink("./580/cgroup" [pid 12037] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12035] write(3, "1000", 4 [pid 12032] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12031] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12034] <... mprotect resumed>) = 0 [pid 12035] <... write resumed>) = 4 [pid 12035] close(3) = 0 [pid 12035] symlink("/dev/binderfs", "./binderfs" [pid 12037] <... openat resumed>) = 4 [pid 12035] <... symlink resumed>) = 0 [pid 12032] <... futex resumed>) = 1 [pid 5049] <... unlink resumed>) = 0 [pid 12032] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12038] <... futex resumed>) = 0 [pid 12038] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12038] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12037] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12036] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12035] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12034] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12033] restart_syscall(<... resuming interrupted futex ...> [pid 12032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12038] <... futex resumed>) = 0 [pid 12035] <... futex resumed>) = 0 [pid 12038] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12035] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12032] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12034] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12033] <... restart_syscall resumed>) = ? [pid 12032] <... futex resumed>) = 0 [pid 12035] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12038] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12036] +++ killed by SIGIO +++ [pid 12035] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12032] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12031] <... futex resumed>) = ? [pid 5049] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 12038] <... openat resumed>) = 4 [pid 12035] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12039 attached [pid 12034] <... clone3 resumed> => {parent_tid=[1130]}, 88) = 1130 [pid 12039] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12038] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12037] +++ killed by SIGIO +++ [pid 12035] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12034] rt_sigprocmask(SIG_SETMASK, [], [pid 12033] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12038] +++ killed by SIGIO +++ [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1148, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12039] <... rseq resumed>) = 0 [pid 12034] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12039] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 12034] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12039] <... set_robust_list resumed>) = 0 [pid 12034] <... futex resumed>) = 0 [pid 12032] <... futex resumed>) = ? [pid 12039] rt_sigprocmask(SIG_SETMASK, [], [pid 12034] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12035] <... mmap resumed>) = 0x7f504ff5f000 [pid 12035] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12035] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12035] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12040 attached => {parent_tid=[1157]}, 88) = 1157 [pid 12040] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12035] rt_sigprocmask(SIG_SETMASK, [], [pid 12040] <... rseq resumed>) = 0 [pid 12035] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12040] set_robust_list(0x7f504ff7f9a0, 24 [pid 12035] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12040] <... set_robust_list resumed>) = 0 [pid 12035] <... futex resumed>) = 0 [pid 12040] rt_sigprocmask(SIG_SETMASK, [], [pid 12035] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12039] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12040] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12040] open(".", O_RDONLY [pid 12039] open(".", O_RDONLY [pid 12040] <... open resumed>) = 3 [pid 12040] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12040] <... futex resumed>) = 1 [pid 12039] <... open resumed>) = 3 [pid 12035] <... futex resumed>) = 0 [pid 12040] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12039] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12035] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12035] <... futex resumed>) = 0 [pid 12031] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12040] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12040] <... fcntl resumed>) = 0 [pid 12039] <... futex resumed>) = 1 [pid 12035] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12034] <... futex resumed>) = 0 [pid 12032] +++ killed by SIGIO +++ [pid 5046] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1185, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12040] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12039] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12035] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12034] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 12040] <... futex resumed>) = 0 [pid 12039] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12035] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12034] <... futex resumed>) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1186, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] unlink("./580/cgroup.net" [pid 5046] <... openat resumed>) = 3 [pid 12040] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12039] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12035] <... futex resumed>) = 0 [pid 12034] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12039] <... fcntl resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 12039] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12035] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12039] <... futex resumed>) = 1 [pid 12034] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] getdents64(3, [pid 12040] <... openat resumed>) = ? [pid 12039] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12034] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5049] close(3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12039] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12034] <... futex resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12039] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12034] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./580" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5049] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 12039] <... openat resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./581", 0777 [pid 5046] unlink("./573/cgroup.cpu" [pid 12039] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12034] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12034] restart_syscall(<... resuming interrupted futex ...>) = ? [pid 5051] <... openat resumed>) = 3 [pid 5050] getdents64(3, [pid 5046] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12040] +++ killed by SIGIO +++ [pid 12035] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1156, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./573/binderfs", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12039] +++ killed by SIGIO +++ [pid 12034] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1129, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5050] unlink("./591/cgroup.cpu" [pid 5051] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./573/binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./563", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] unlink("./591/cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./591/binderfs", [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 ./strace-static-x86_64: Process 12041 attached [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5045] newfstatat(3, "", [pid 12041] set_robust_list(0x555556ac56a0, 24 [pid 5051] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./591/binderfs" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1164 [pid 5047] newfstatat(3, "", [pid 5046] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12041] <... set_robust_list resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] getdents64(3, [pid 5051] newfstatat(AT_FDCWD, "./591/binderfs", [pid 5047] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12041] chdir("./581" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12041] <... chdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./573/cgroup", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./563/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./563/cgroup.cpu", [pid 12041] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] newfstatat(AT_FDCWD, "./577/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./591/binderfs" [pid 5050] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./563/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12041] <... prctl resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./591/cgroup", [pid 5047] unlink("./577/cgroup.cpu" [pid 5046] unlink("./573/cgroup" [pid 12041] setpgid(0, 0 [pid 5051] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./563/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12041] <... setpgid resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./563/binderfs", [pid 5051] newfstatat(AT_FDCWD, "./591/cgroup", [pid 5050] unlink("./591/cgroup" [pid 5047] newfstatat(AT_FDCWD, "./577/binderfs", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./577/binderfs" [pid 12041] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./563/binderfs" [pid 5051] unlink("./591/cgroup" [pid 5046] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12041] <... symlink resumed>) = 0 [pid 5050] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./577/cgroup", [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./563/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./577/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./563/cgroup", [pid 12041] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./563/cgroup" [pid 12041] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 12041] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./563/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12041] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./591/cgroup.net", [pid 5046] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 12041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./563/blkio.bfq.io_wait_time_recursive", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./591/cgroup.net", [pid 5050] unlink("./591/cgroup.net" [pid 5046] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12041] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./591/cgroup.net" [pid 5046] newfstatat(AT_FDCWD, "./573/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12041] write(3, "1000", 4 [pid 5050] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./573/cgroup.net" [pid 5045] unlink("./563/blkio.bfq.io_wait_time_recursive" [pid 12041] <... write resumed>) = 4 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 12041] close(3 [pid 5051] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./577/cgroup.net", [pid 5045] <... unlink resumed>) = 0 [pid 12041] <... close resumed>) = 0 [pid 5050] close(3 [pid 5051] rmdir("./591") = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] mkdir("./592", 0777 [pid 12041] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... close resumed>) = 0 [pid 12041] <... symlink resumed>) = 0 [pid 5050] rmdir("./591" [pid 5047] unlink("./577/cgroup.net" [pid 5051] <... mkdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] umount2("./563/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12041] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12041] <... futex resumed>) = 0 [pid 5050] mkdir("./592", 0777 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12041] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 5045] newfstatat(AT_FDCWD, "./563/cgroup.net", ./strace-static-x86_64: Process 12042 attached [pid 5046] <... close resumed>) = 0 [pid 12042] set_robust_list(0x555556ac56a0, 24 [pid 12041] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1187 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12042] <... set_robust_list resumed>) = 0 [pid 12042] chdir("./592") = 0 [pid 12041] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... mkdir resumed>) = 0 [pid 5047] close(3 [pid 5046] rmdir("./573" [pid 5045] unlink("./563/cgroup.net" [pid 12042] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12041] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12042] <... prctl resumed>) = 0 [pid 12042] setpgid(0, 0) = 0 [pid 12042] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] <... rmdir resumed>) = 0 [pid 12041] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12042] <... symlink resumed>) = 0 [pid 12041] <... mmap resumed>) = 0x7f504ff5f000 [pid 12042] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 12042] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5047] <... close resumed>) = 0 [pid 12041] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... unlink resumed>) = 0 [pid 5047] rmdir("./577" [pid 5046] mkdir("./574", 0777 [pid 12042] <... symlink resumed>) = 0 [pid 12041] <... mprotect resumed>) = 0 [pid 12042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12041] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] getdents64(3, [pid 12042] <... openat resumed>) = 3 [pid 12041] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12041] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] mkdir("./578", 0777 [pid 5045] close(3 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 5045] rmdir("./563" [pid 12042] write(3, "1000", 4./strace-static-x86_64: Process 12043 attached ) = 4 [pid 12043] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12042] close(3./strace-static-x86_64: Process 12044 attached [pid 12043] <... rseq resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1150 [pid 12042] <... close resumed>) = 0 ./strace-static-x86_64: Process 12045 attached [pid 12044] set_robust_list(0x555556ac56a0, 24 [pid 12043] set_robust_list(0x7f504ff7f9a0, 24 [pid 12042] symlink("/dev/binderfs", "./binderfs" [pid 12041] <... clone3 resumed> => {parent_tid=[1165]}, 88) = 1165 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1188 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12045] set_robust_list(0x555556ac56a0, 24 [pid 12044] <... set_robust_list resumed>) = 0 [pid 12043] <... set_robust_list resumed>) = 0 [pid 12042] <... symlink resumed>) = 0 [pid 12041] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... rmdir resumed>) = 0 [pid 12044] chdir("./574" [pid 5045] mkdir("./564", 0777./strace-static-x86_64: Process 12046 attached [pid 12045] <... set_robust_list resumed>) = 0 [pid 12044] <... chdir resumed>) = 0 [pid 12043] rt_sigprocmask(SIG_SETMASK, [], [pid 12042] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12041] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12046] set_robust_list(0x555556ac56a0, 24 [pid 12045] chdir("./592" [pid 12044] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12043] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12042] <... futex resumed>) = 0 [pid 12041] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12046] <... set_robust_list resumed>) = 0 [pid 12045] <... chdir resumed>) = 0 [pid 12044] <... prctl resumed>) = 0 [pid 12043] open(".", O_RDONLY [pid 12042] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1158 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12045] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12044] setpgid(0, 0 [pid 12042] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12041] <... futex resumed>) = 0 [pid 12041] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12045] <... prctl resumed>) = 0 [pid 12042] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12046] chdir("./578" [pid 12045] setpgid(0, 0 [pid 12044] <... setpgid resumed>) = 0 [pid 12042] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12046] <... chdir resumed>) = 0 [pid 12045] <... setpgid resumed>) = 0 [pid 12043] <... open resumed>) = 3 [pid 12042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12046] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12042] <... mmap resumed>) = 0x7f504ff5f000 [pid 12046] <... prctl resumed>) = 0 [pid 12043] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12042] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12045] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12046] setpgid(0, 0 [pid 12045] <... symlink resumed>) = 0 [pid 12046] <... setpgid resumed>) = 0 [pid 12045] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12044] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12043] <... futex resumed>) = 1 [pid 12042] <... mprotect resumed>) = 0 [pid 12046] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12045] <... symlink resumed>) = 0 [pid 12044] <... symlink resumed>) = 0 [pid 12043] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12042] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12041] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12047 attached [pid 12042] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12047] set_robust_list(0x555556ac56a0, 24 [pid 12046] <... symlink resumed>) = 0 [pid 12045] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12044] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12042] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12041] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1131 [pid 12047] <... set_robust_list resumed>) = 0 [pid 12045] <... symlink resumed>) = 0 [pid 12044] <... symlink resumed>) = 0 [pid 12043] <... futex resumed>) = 0 [pid 12041] <... futex resumed>) = 1 [pid 12043] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12046] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12041] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12043] <... fcntl resumed>) = 0 [pid 12046] <... symlink resumed>) = 0 [pid 12045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12044] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12045] <... openat resumed>) = 3 [pid 12044] <... symlink resumed>) = 0 [pid 12046] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12047] chdir("./564" [pid 12043] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12048 attached [pid 12047] <... chdir resumed>) = 0 [pid 12046] <... symlink resumed>) = 0 [pid 12045] write(3, "1000", 4 [pid 12044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12043] <... futex resumed>) = 1 [pid 12042] <... clone3 resumed> => {parent_tid=[1188]}, 88) = 1188 [pid 12041] <... futex resumed>) = 0 [pid 12045] <... write resumed>) = 4 [pid 12042] rt_sigprocmask(SIG_SETMASK, [], [pid 12046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12045] close(3 [pid 12042] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12048] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12047] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12046] <... openat resumed>) = 3 [pid 12045] <... close resumed>) = 0 [pid 12044] <... openat resumed>) = 3 [pid 12043] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12042] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12041] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12048] <... rseq resumed>) = 0 [pid 12047] <... prctl resumed>) = 0 [pid 12043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12048] set_robust_list(0x7f504ff7f9a0, 24 [pid 12041] <... futex resumed>) = 0 [pid 12047] setpgid(0, 0 [pid 12045] symlink("/dev/binderfs", "./binderfs" [pid 12043] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12048] <... set_robust_list resumed>) = 0 [pid 12047] <... setpgid resumed>) = 0 [pid 12046] write(3, "1000", 4 [pid 12045] <... symlink resumed>) = 0 [pid 12044] write(3, "1000", 4 [pid 12042] <... futex resumed>) = 0 [pid 12041] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12046] <... write resumed>) = 4 [pid 12046] close(3) = 0 [pid 12046] symlink("/dev/binderfs", "./binderfs" [pid 12042] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12046] <... symlink resumed>) = 0 [pid 12043] <... openat resumed>) = 4 [pid 12048] rt_sigprocmask(SIG_SETMASK, [], [pid 12047] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12045] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12045] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12046] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12045] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12046] <... futex resumed>) = 0 [pid 12045] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12048] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12046] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12044] <... write resumed>) = 4 [pid 12041] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12043] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12046] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12045] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12048] open(".", O_RDONLY [pid 12046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12044] close(3 [pid 12048] <... open resumed>) = 3 [pid 12046] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12045] <... mmap resumed>) = 0x7f504ff5f000 [pid 12044] <... close resumed>) = 0 [pid 12043] +++ killed by SIGIO +++ [pid 12048] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12045] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12044] symlink("/dev/binderfs", "./binderfs" [pid 12048] <... futex resumed>) = 1 [pid 12046] <... mmap resumed>) = 0x7f504ff5f000 [pid 12045] <... mprotect resumed>) = 0 [pid 12042] <... futex resumed>) = 0 [pid 12047] <... symlink resumed>) = 0 [pid 12046] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12045] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12042] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12046] <... mprotect resumed>) = 0 [pid 12044] <... symlink resumed>) = 0 [pid 12048] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12046] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12044] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12042] <... futex resumed>) = 0 [pid 12045] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12047] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12042] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12047] <... symlink resumed>) = 0 [pid 12046] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12044] <... futex resumed>) = 0 [pid 12046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12049 attached [pid 12048] <... fcntl resumed>) = 0 [pid 12045] <... clone3 resumed> => {parent_tid=[1189]}, 88) = 1189 [pid 12044] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12049] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12045] rt_sigprocmask(SIG_SETMASK, [], [pid 12049] <... rseq resumed>) = 0 [pid 12047] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12045] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12050 attached [pid 12049] set_robust_list(0x7f504ff7f9a0, 24 [pid 12046] <... clone3 resumed> => {parent_tid=[1159]}, 88) = 1159 [pid 12045] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12050] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12049] <... set_robust_list resumed>) = 0 [pid 12046] rt_sigprocmask(SIG_SETMASK, [], [pid 12045] <... futex resumed>) = 0 [pid 12050] <... rseq resumed>) = 0 [pid 12049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12045] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12050] set_robust_list(0x7f504ff7f9a0, 24 [pid 12049] open(".", O_RDONLY [pid 12048] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12047] <... symlink resumed>) = 0 [pid 12046] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12044] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12050] <... set_robust_list resumed>) = 0 [pid 12049] <... open resumed>) = 3 [pid 12048] <... futex resumed>) = 1 [pid 12047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12046] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12042] <... futex resumed>) = 0 [pid 12050] rt_sigprocmask(SIG_SETMASK, [], [pid 12049] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12046] <... futex resumed>) = 0 [pid 12042] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12050] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12049] <... futex resumed>) = 1 [pid 12048] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12047] <... openat resumed>) = 3 [pid 12046] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12045] <... futex resumed>) = 0 [pid 12044] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12042] <... futex resumed>) = 0 [pid 12050] open(".", O_RDONLY [pid 12049] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12045] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12042] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12050] <... open resumed>) = 3 [pid 12049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12048] <... openat resumed>) = 4 [pid 12045] <... futex resumed>) = 0 [pid 12042] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12049] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12045] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12042] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12050] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12049] <... fcntl resumed>) = 0 [pid 12050] <... futex resumed>) = 1 [pid 12050] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12049] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12046] <... futex resumed>) = 0 [pid 12049] <... futex resumed>) = 1 [pid 12046] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12045] <... futex resumed>) = 0 [pid 12050] <... futex resumed>) = 0 [pid 12049] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12046] <... futex resumed>) = 1 [pid 12045] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12050] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12046] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12045] <... futex resumed>) = 0 [pid 12050] <... fcntl resumed>) = 0 [pid 12049] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12045] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12050] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12049] <... openat resumed>) = 4 [pid 12050] <... futex resumed>) = 1 [pid 12047] write(3, "1000", 4 [pid 12044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12047] <... write resumed>) = 4 [pid 12041] +++ killed by SIGIO +++ [pid 12046] <... futex resumed>) = 0 [pid 12044] <... mmap resumed>) = 0x7f504ff5f000 [pid 12050] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12047] close(3 [pid 12050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12047] <... close resumed>) = 0 [pid 12046] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1164, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12050] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12047] symlink("/dev/binderfs", "./binderfs" [pid 12046] <... futex resumed>) = 0 [pid 12044] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12050] <... openat resumed>) = 4 [pid 12049] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12045] <... futex resumed>) = ? [pid 12047] <... symlink resumed>) = 0 [pid 12044] <... mprotect resumed>) = 0 [pid 12049] +++ killed by SIGIO +++ [pid 12047] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12044] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12050] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12047] <... futex resumed>) = 0 [pid 12046] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12045] +++ killed by SIGIO +++ [pid 12044] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12050] <... futex resumed>) = ? [pid 12047] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12047] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12044] <... clone3 resumed> => {parent_tid=[1151]}, 88) = 1151 [pid 12047] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12044] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12047] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12044] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12047] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 12051 attached [pid 12051] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12047] <... mmap resumed>) = 0x7f504ff5f000 [pid 12044] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12051] <... rseq resumed>) = 0 [pid 12047] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12044] <... futex resumed>) = 0 [pid 12051] set_robust_list(0x7f504ff7f9a0, 24 [pid 12047] <... mprotect resumed>) = 0 [pid 12044] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12051] <... set_robust_list resumed>) = 0 [pid 12051] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1188, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12051] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12050] +++ killed by SIGIO +++ [pid 12048] +++ killed by SIGIO +++ [pid 12047] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12046] +++ killed by SIGIO +++ [pid 12042] +++ killed by SIGIO +++ [pid 5049] <... openat resumed>) = 3 [pid 12051] open(".", O_RDONLY [pid 12047] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1187, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1158, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12051] <... open resumed>) = 3 [pid 12047] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12052 attached [pid 12051] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12052] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12051] <... futex resumed>) = 1 [pid 12047] <... clone3 resumed> => {parent_tid=[1132]}, 88) = 1132 [pid 12044] <... futex resumed>) = 0 [pid 5051] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12052] <... rseq resumed>) = 0 [pid 12051] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12047] rt_sigprocmask(SIG_SETMASK, [], [pid 12044] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 12052] set_robust_list(0x7f504ff7f9a0, 24 [pid 12051] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12044] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12052] <... set_robust_list resumed>) = 0 [pid 12051] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12047] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12044] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 5047] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12052] rt_sigprocmask(SIG_SETMASK, [], [pid 12051] <... fcntl resumed>) = 0 [pid 12047] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 12052] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12051] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12052] open(".", O_RDONLY [pid 12051] <... futex resumed>) = 1 [pid 12044] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] getdents64(3, [pid 12051] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12044] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12051] <... openat resumed>) = 4 [pid 12047] <... futex resumed>) = 0 [pid 12044] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12044] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12047] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./581/cgroup.cpu", [pid 5047] <... openat resumed>) = 3 [pid 12052] <... open resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 12052] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 12052] <... futex resumed>) = 1 [pid 12047] <... futex resumed>) = 0 [pid 5051] unlink("./592/cgroup.cpu" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 12052] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12051] +++ killed by SIGIO +++ [pid 12047] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12044] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./592/cgroup.cpu" [pid 5049] unlink("./581/cgroup.cpu" [pid 12052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12047] <... futex resumed>) = 0 [pid 5051] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1150, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12052] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12047] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 12052] <... fcntl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./592/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./581/binderfs", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./581/binderfs" [pid 12052] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./592/binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12052] <... futex resumed>) = 1 [pid 12047] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./592/binderfs", [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12052] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12047] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12047] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 12047] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./592/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./581/cgroup", [pid 5046] <... openat resumed>) = 3 [pid 12052] <... openat resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./592/cgroup", [pid 5047] unlink("./578/cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./592/cgroup" [pid 5050] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./581/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 12052] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 12047] <... futex resumed>) = ? [pid 12052] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./592/cgroup", [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./592/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5051] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./578/binderfs", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./592/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./578/binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./574/cgroup.cpu", [pid 5051] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./592/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./574/cgroup.cpu" [pid 5051] newfstatat(AT_FDCWD, "./592/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./581/cgroup.net", [pid 5051] unlink("./592/cgroup.net" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./581/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./578/cgroup", [pid 5046] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12047] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] newfstatat(AT_FDCWD, "./592/cgroup.net", [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./574/binderfs", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1131, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] unlink("./578/cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./592/cgroup.net" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] close(3 [pid 5046] unlink("./574/binderfs" [pid 5051] <... close resumed>) = 0 [pid 5051] rmdir("./592" [pid 5045] umount2("./564", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5050] getdents64(3, [pid 5049] rmdir("./581" [pid 5047] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] mkdir("./593", 0777 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5051] <... mkdir resumed>) = 0 [pid 5050] close(3 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./574/cgroup", [pid 5049] mkdir("./582", 0777 [pid 5045] getdents64(3, [pid 5050] rmdir("./592" [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 12053 attached [pid 5047] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 12053] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./574/cgroup" [pid 5045] umount2("./564/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12053] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1189 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./564/cgroup.cpu", [pid 12053] chdir("./593" [pid 5050] mkdir("./593", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12053] <... chdir resumed>) = 0 [pid 12053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./578/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./564/cgroup.cpu" [pid 12053] setpgid(0, 0./strace-static-x86_64: Process 12054 attached ) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1166 [pid 12054] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 5047] unlink("./578/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 12054] <... set_robust_list resumed>) = 0 [pid 12053] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5045] umount2("./564/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./564/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./564/binderfs" [pid 5046] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./574/cgroup.net", [pid 12053] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12054] chdir("./582" [pid 5046] unlink("./574/cgroup.net" [pid 5045] umount2("./564/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./564/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] unlink("./564/cgroup" [pid 5046] close(3) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] rmdir("./574" [pid 12054] <... chdir resumed>) = 0 [pid 12053] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12055 attached [pid 12054] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1190 [pid 5047] close(3 [pid 5045] umount2("./564/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12054] <... prctl resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] rmdir("./578" [pid 12055] set_robust_list(0x555556ac56a0, 24 [pid 12053] <... symlink resumed>) = 0 [pid 5046] mkdir("./575", 0777 [pid 5045] newfstatat(AT_FDCWD, "./564/blkio.bfq.io_wait_time_recursive", [pid 12055] <... set_robust_list resumed>) = 0 [pid 12054] setpgid(0, 0 [pid 12053] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12054] <... setpgid resumed>) = 0 [pid 12053] <... symlink resumed>) = 0 [pid 5045] unlink("./564/blkio.bfq.io_wait_time_recursive" [pid 12055] chdir("./593" [pid 12054] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] <... mkdir resumed>) = 0 [pid 12055] <... chdir resumed>) = 0 [pid 12053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] mkdir("./579", 0777 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 12055] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12054] <... symlink resumed>) = 0 [pid 12053] <... openat resumed>) = 3 [pid 12054] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 12054] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5047] <... mkdir resumed>) = 0 [pid 12055] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 12056 attached [pid 12053] write(3, "1000", 4 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./564/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12055] setpgid(0, 0 [pid 12053] <... write resumed>) = 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12055] <... setpgid resumed>) = 0 [pid 12053] close(3 [pid 5045] newfstatat(AT_FDCWD, "./564/cgroup.net", [pid 12056] set_robust_list(0x555556ac56a0, 24 [pid 12055] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12054] <... symlink resumed>) = 0 [pid 12053] <... close resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1152 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12056] <... set_robust_list resumed>) = 0 [pid 12054] <... openat resumed>) = 3 [pid 12053] symlink("/dev/binderfs", "./binderfs" [pid 5045] unlink("./564/cgroup.net") = 0 [pid 12054] write(3, "1000", 4 [pid 12053] <... symlink resumed>) = 0 [pid 5045] getdents64(3, [pid 12054] <... write resumed>) = 4 [pid 12054] close(3 [pid 12056] chdir("./575" [pid 12054] <... close resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12054] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 12057 attached [pid 12056] <... chdir resumed>) = 0 [pid 12055] <... symlink resumed>) = 0 [pid 12054] <... symlink resumed>) = 0 [pid 12053] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1160 [pid 5045] close(3 [pid 12055] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12053] <... futex resumed>) = 0 [pid 12053] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... close resumed>) = 0 [pid 12054] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12054] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12055] <... symlink resumed>) = 0 [pid 5045] rmdir("./564" [pid 12056] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12053] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12053] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12054] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12053] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12056] <... prctl resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12053] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12057] set_robust_list(0x555556ac56a0, 24 [pid 12054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12057] <... set_robust_list resumed>) = 0 [pid 12056] setpgid(0, 0 [pid 12055] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12053] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] mkdir("./565", 0777 [pid 12057] chdir("./579" [pid 12056] <... setpgid resumed>) = 0 [pid 12054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12057] <... chdir resumed>) = 0 [pid 12056] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12055] <... symlink resumed>) = 0 [pid 12053] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12058 attached [pid 12057] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12053] <... mprotect resumed>) = 0 [pid 12058] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12057] <... prctl resumed>) = 0 [pid 12055] <... openat resumed>) = 3 [pid 12054] <... clone3 resumed> => {parent_tid=[1167]}, 88) = 1167 [pid 12058] <... rseq resumed>) = 0 [pid 12057] setpgid(0, 0 [pid 12058] set_robust_list(0x7f504ff7f9a0, 24 [pid 12057] <... setpgid resumed>) = 0 [pid 12056] <... symlink resumed>) = 0 [pid 12054] rt_sigprocmask(SIG_SETMASK, [], [pid 12053] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12058] <... set_robust_list resumed>) = 0 [pid 12057] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12055] write(3, "1000", 4 [pid 12054] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12053] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12058] rt_sigprocmask(SIG_SETMASK, [], [pid 12057] <... symlink resumed>) = 0 [pid 12053] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12058] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12058] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12056] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12057] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12056] <... symlink resumed>) = 0 [pid 12057] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12059 attached [pid 12053] <... clone3 resumed> => {parent_tid=[1190]}, 88) = 1190 [pid 12059] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12053] rt_sigprocmask(SIG_SETMASK, [], [pid 12059] <... rseq resumed>) = 0 [pid 12053] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12059] set_robust_list(0x7f504ff7f9a0, 24 [pid 12057] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12056] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12055] <... write resumed>) = 4 [pid 12053] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12059] <... set_robust_list resumed>) = 0 [pid 12057] <... symlink resumed>) = 0 [pid 12053] <... futex resumed>) = 0 [pid 12055] close(3 [pid 12054] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] <... close resumed>) = 0 [pid 12054] <... futex resumed>) = 1 [pid 12059] rt_sigprocmask(SIG_SETMASK, [], [pid 12058] <... futex resumed>) = 0 [pid 12056] <... symlink resumed>) = 0 [pid 12055] symlink("/dev/binderfs", "./binderfs" [pid 12053] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12059] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12058] open(".", O_RDONLY [pid 12057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12054] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12059] open(".", O_RDONLY [pid 12058] <... open resumed>) = 3 [pid 12057] <... openat resumed>) = 3 [pid 12057] write(3, "1000", 4) = 4 [pid 12055] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12060 attached [pid 12059] <... open resumed>) = 3 [pid 12058] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12057] close(3 [pid 12056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1133 [pid 12060] set_robust_list(0x555556ac56a0, 24 [pid 12057] <... close resumed>) = 0 [pid 12055] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12059] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12058] <... futex resumed>) = 1 [pid 12057] symlink("/dev/binderfs", "./binderfs" [pid 12054] <... futex resumed>) = 0 [pid 12059] <... futex resumed>) = 1 [pid 12058] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12057] <... symlink resumed>) = 0 [pid 12053] <... futex resumed>) = 0 [pid 12059] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12054] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12058] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12053] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12059] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12058] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12054] <... futex resumed>) = 0 [pid 12053] <... futex resumed>) = 0 [pid 12059] <... fcntl resumed>) = 0 [pid 12058] <... fcntl resumed>) = 0 [pid 12057] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12054] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12053] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12059] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12058] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12057] <... futex resumed>) = 0 [pid 12054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12059] <... futex resumed>) = 0 [pid 12058] <... futex resumed>) = 0 [pid 12057] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12054] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12053] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12059] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12058] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12057] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12056] <... openat resumed>) = 3 [pid 12054] <... futex resumed>) = 0 [pid 12053] <... futex resumed>) = 0 [pid 12060] <... set_robust_list resumed>) = 0 [pid 12060] chdir("./565" [pid 12056] write(3, "1000", 4 [pid 12055] <... futex resumed>) = 0 [pid 12060] <... chdir resumed>) = 0 [pid 12056] <... write resumed>) = 4 [pid 12055] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12060] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12058] <... openat resumed>) = 4 [pid 12056] close(3 [pid 12055] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12060] <... prctl resumed>) = 0 [pid 12056] <... close resumed>) = 0 [pid 12055] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12060] setpgid(0, 0 [pid 12059] <... openat resumed>) = 4 [pid 12056] symlink("/dev/binderfs", "./binderfs" [pid 12055] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12060] <... setpgid resumed>) = 0 [pid 12059] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12058] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12057] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12054] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12053] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12060] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12059] <... futex resumed>) = ? [pid 12058] <... futex resumed>) = ? [pid 12057] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12056] <... symlink resumed>) = 0 [pid 12055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12058] +++ killed by SIGIO +++ [pid 12057] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12056] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] <... mmap resumed>) = 0x7f504ff5f000 [pid 12060] <... symlink resumed>) = 0 [pid 12059] +++ killed by SIGIO +++ [pid 12057] <... mmap resumed>) = 0x7f504ff5f000 [pid 12060] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12056] <... futex resumed>) = 0 [pid 12055] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12057] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12056] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12057] <... mprotect resumed>) = 0 [pid 12056] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12057] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12057] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12055] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 12061 attached [pid 12057] <... clone3 resumed> => {parent_tid=[1161]}, 88) = 1161 [pid 12061] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12057] rt_sigprocmask(SIG_SETMASK, [], [pid 12061] <... rseq resumed>) = 0 [pid 12057] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12061] set_robust_list(0x7f504ff7f9a0, 24 [pid 12057] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12061] <... set_robust_list resumed>) = 0 [pid 12057] <... futex resumed>) = 0 [pid 12061] rt_sigprocmask(SIG_SETMASK, [], [pid 12057] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12061] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12061] open(".", O_RDONLY) = 3 [pid 12056] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12060] <... symlink resumed>) = 0 [pid 12056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12060] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12056] <... mmap resumed>) = 0x7f504ff5f000 [pid 12055] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12056] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12061] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12057] <... futex resumed>) = 0 [pid 12056] <... mprotect resumed>) = 0 [pid 12055] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12061] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12057] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12061] <... fcntl resumed>) = 0 [pid 12057] <... futex resumed>) = 0 [pid 12056] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12055] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12060] <... symlink resumed>) = 0 [pid 12057] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12061] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12057] <... futex resumed>) = 0 [pid 12061] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12057] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12057] <... futex resumed>) = 0 [pid 12061] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12057] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12061] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12062 attached [pid 12060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12056] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12053] +++ killed by SIGIO +++ [pid 12062] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12062] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12062] rt_sigprocmask(SIG_SETMASK, [], [pid 12056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12054] +++ killed by SIGIO +++ [pid 12060] <... openat resumed>) = 3 ./strace-static-x86_64: Process 12063 attached [pid 12062] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12061] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12063] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12062] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12057] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12063] <... rseq resumed>) = 0 [pid 12060] write(3, "1000", 4 [pid 12056] <... clone3 resumed> => {parent_tid=[1153]}, 88) = 1153 [pid 12063] set_robust_list(0x7f504ff7f9a0, 24 [pid 12061] +++ killed by SIGIO +++ [pid 12060] <... write resumed>) = 4 [pid 12056] rt_sigprocmask(SIG_SETMASK, [], [pid 12055] <... clone3 resumed> => {parent_tid=[1191]}, 88) = 1191 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1189, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12063] <... set_robust_list resumed>) = 0 [pid 12060] close(3 [pid 12056] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12055] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./593", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1166, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12063] rt_sigprocmask(SIG_SETMASK, [], [pid 12060] <... close resumed>) = 0 [pid 12056] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12063] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12060] symlink("/dev/binderfs", "./binderfs" [pid 12056] <... futex resumed>) = 0 [pid 12055] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] openat(AT_FDCWD, "./593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12063] open(".", O_RDONLY [pid 5049] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12060] <... symlink resumed>) = 0 [pid 12056] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5049] <... openat resumed>) = 3 [pid 12063] <... open resumed>) = 3 [pid 12062] <... futex resumed>) = 0 [pid 12055] <... futex resumed>) = 1 [pid 12062] open(".", O_RDONLY [pid 12060] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(3, "", [pid 12063] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12062] <... open resumed>) = 3 [pid 12060] <... futex resumed>) = 0 [pid 12057] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(3, "", [pid 12063] <... futex resumed>) = 1 [pid 12062] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12060] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12056] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1160, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12063] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12062] <... futex resumed>) = 1 [pid 12060] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12056] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12063] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12062] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12060] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12055] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12062] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12055] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 12063] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12062] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12060] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12056] <... futex resumed>) = 0 [pid 12055] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12063] <... fcntl resumed>) = 0 [pid 12062] <... fcntl resumed>) = 0 [pid 12060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12056] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./593/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12062] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12063] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12062] <... futex resumed>) = 1 [pid 12060] <... mmap resumed>) = 0x7f504ff5f000 [pid 12056] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12055] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12063] <... futex resumed>) = 0 [pid 12062] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12060] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12056] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12055] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./593/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 5047] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12063] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12062] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12060] <... mprotect resumed>) = 0 [pid 12056] <... futex resumed>) = 0 [pid 12055] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12062] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12055] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12063] <... openat resumed>) = 4 [pid 12062] <... openat resumed>) = 4 [pid 5049] unlink("./582/cgroup.cpu" [pid 12063] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12062] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12060] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12056] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12055] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] unlink("./593/cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 5049] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./582/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./582/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12062] +++ killed by SIGIO +++ [pid 5049] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12060] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./582/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./582/cgroup") = 0 [pid 5049] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./582/blkio.bfq.io_wait_time_recursive" [pid 5051] umount2("./593/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12060] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 12063] <... futex resumed>) = ? [pid 5049] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./582/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./582/cgroup.net") = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./582") = 0 [pid 5047] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./583", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12064 attached [pid 5049] <... mkdir resumed>) = 0 [pid 12064] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12064] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12064] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./579/cgroup.cpu", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12060] <... clone3 resumed> => {parent_tid=[1134]}, 88) = 1134 [pid 5051] newfstatat(AT_FDCWD, "./593/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12065 attached [pid 12065] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1168 [pid 12065] <... set_robust_list resumed>) = 0 [pid 12065] chdir("./583") = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./579/cgroup.cpu" [pid 12060] rt_sigprocmask(SIG_SETMASK, [], [pid 12065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12065] setpgid(0, 0) = 0 [pid 12065] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12060] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./593/binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 12060] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12065] <... symlink resumed>) = 0 [pid 12060] <... futex resumed>) = 1 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12060] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12064] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./579/binderfs", [pid 12064] open(".", O_RDONLY [pid 12065] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 12064] <... open resumed>) = 3 [pid 12055] +++ killed by SIGIO +++ [pid 5051] umount2("./593/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12065] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12064] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12063] +++ killed by SIGIO +++ [pid 12056] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1190, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5047] unlink("./579/binderfs" [pid 12065] <... symlink resumed>) = 0 [pid 12064] <... futex resumed>) = 1 [pid 12060] <... futex resumed>) = 0 [pid 12065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12064] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12060] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./593/cgroup", [pid 12065] write(3, "1000", 4) = 4 [pid 12065] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12064] <... fcntl resumed>) = 0 [pid 12060] <... futex resumed>) = 0 [pid 5051] unlink("./593/cgroup" [pid 5047] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1152, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12065] <... close resumed>) = 0 [pid 12064] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./593", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12065] symlink("/dev/binderfs", "./binderfs" [pid 12060] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12065] <... symlink resumed>) = 0 [pid 12065] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12065] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12064] <... futex resumed>) = 0 [pid 12060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12064] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./579/cgroup", [pid 12064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12060] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] openat(AT_FDCWD, "./593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12065] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12065] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12064] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12060] <... futex resumed>) = 0 [pid 12065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... openat resumed>) = 3 [pid 5046] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12065] <... mmap resumed>) = 0x7f504ff5f000 [pid 12060] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12065] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12064] <... openat resumed>) = 4 [pid 5046] <... openat resumed>) = 3 [pid 5051] umount2("./593/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5047] unlink("./579/cgroup" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12066 attached [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12066] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12065] <... clone3 resumed> => {parent_tid=[1169]}, 88) = 1169 [pid 12066] <... rseq resumed>) = 0 [pid 12065] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./593/blkio.bfq.io_wait_time_recursive", [pid 5050] getdents64(3, [pid 5047] <... unlink resumed>) = 0 [pid 12066] set_robust_list(0x7f504ff7f9a0, 24 [pid 12065] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12066] <... set_robust_list resumed>) = 0 [pid 12065] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12066] rt_sigprocmask(SIG_SETMASK, [], [pid 12065] <... futex resumed>) = 0 [pid 12066] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12066] open(".", O_RDONLY [pid 12065] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12064] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12060] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./593/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 12066] <... open resumed>) = 3 [pid 5051] unlink("./593/blkio.bfq.io_wait_time_recursive" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12066] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12065] <... futex resumed>) = 0 [pid 12066] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12065] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12065] <... futex resumed>) = 0 [pid 12066] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12065] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 12066] <... fcntl resumed>) = 0 [pid 12066] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12066] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12065] <... futex resumed>) = 0 [pid 12065] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12066] <... futex resumed>) = 0 [pid 12065] <... futex resumed>) = 1 [pid 12066] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 12065] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12065] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12065] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] newfstatat(AT_FDCWD, "./593/cgroup.cpu", [pid 12066] +++ killed by SIGIO +++ [pid 12065] +++ killed by SIGIO +++ [pid 12064] +++ killed by SIGIO +++ [pid 12060] +++ killed by SIGIO +++ [pid 5051] umount2("./593/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", [pid 5046] getdents64(3, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./593/cgroup.cpu" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1168, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5049] newfstatat(3, "", [pid 5050] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./593/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./579/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./593/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./593/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./575/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./583/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] unlink("./583/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./593/binderfs", [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./575/cgroup.cpu" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1133, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./593/binderfs" [pid 5049] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./583/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./583/binderfs" [pid 5045] umount2("./565", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] close(3 [pid 5050] umount2("./593/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... close resumed>) = 0 [pid 5049] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] rmdir("./593" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./579/cgroup.net", [pid 5046] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./583/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./593/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 5049] unlink("./583/cgroup" [pid 5047] unlink("./579/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./575/binderfs", [pid 5045] newfstatat(3, "", [pid 5047] getdents64(3, [pid 5049] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./575/binderfs" [pid 5047] close(3 [pid 5045] getdents64(3, [pid 5050] unlink("./593/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./579" [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./565/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] mkdir("./594", 0777 [pid 5050] umount2("./593/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./565/cgroup.cpu", [pid 5050] newfstatat(AT_FDCWD, "./593/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./575/cgroup", [pid 5049] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./565/cgroup.cpu" [pid 5050] unlink("./593/blkio.bfq.io_wait_time_recursive" [pid 5047] mkdir("./580", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] unlink("./575/cgroup") = 0 [pid 5050] umount2("./593/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./565/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./593/cgroup.net", [pid 5045] newfstatat(AT_FDCWD, "./565/binderfs", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./593/cgroup.net" [pid 5046] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./565/binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] close(3 [pid 5046] unlink("./575/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./565/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./593") = 0 [pid 5046] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./565/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./565/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5049] unlink("./583/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12067 attached [pid 5046] unlink("./575/cgroup.net" [pid 12067] set_robust_list(0x555556ac56a0, 24 [pid 5050] mkdir("./594", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./565/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12068 attached [pid 5049] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(AT_FDCWD, "./565/blkio.bfq.io_wait_time_recursive", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12068] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1191 [pid 5049] close(3 [pid 5046] <... close resumed>) = 0 [pid 5045] unlink("./565/blkio.bfq.io_wait_time_recursive" [pid 12068] <... set_robust_list resumed>) = 0 [pid 12067] <... set_robust_list resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12067] chdir("./580" [pid 5049] rmdir("./583" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1162 [pid 12067] <... chdir resumed>) = 0 [pid 5046] rmdir("./575" [pid 5045] umount2("./565/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12068] chdir("./594" [pid 12067] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12067] <... prctl resumed>) = 0 [pid 12067] setpgid(0, 0) = 0 [pid 12067] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12068] <... chdir resumed>) = 0 [pid 12067] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] mkdir("./584", 0777 [pid 5045] newfstatat(AT_FDCWD, "./565/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12067] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5049] <... mkdir resumed>) = 0 [pid 5046] mkdir("./576", 0777 [pid 5045] unlink("./565/cgroup.net"./strace-static-x86_64: Process 12069 attached [pid 12068] <... prctl resumed>) = 0 [pid 12067] <... symlink resumed>) = 0 [pid 12069] set_robust_list(0x555556ac56a0, 24 [pid 12068] setpgid(0, 0 [pid 12067] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1192 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12069] <... set_robust_list resumed>) = 0 [pid 12068] <... setpgid resumed>) = 0 [pid 12067] <... symlink resumed>) = 0 [pid 12068] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12068] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12070 attached [pid 12069] chdir("./594" [pid 12067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] getdents64(3, [pid 12068] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12067] <... openat resumed>) = 3 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12071 attached [pid 12070] set_robust_list(0x555556ac56a0, 24 [pid 12069] <... chdir resumed>) = 0 [pid 12068] <... symlink resumed>) = 0 [pid 12067] write(3, "1000", 4 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1170 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1154 [pid 5045] close(3 [pid 12071] set_robust_list(0x555556ac56a0, 24 [pid 12070] <... set_robust_list resumed>) = 0 [pid 12069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12068] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12067] <... write resumed>) = 4 [pid 5045] <... close resumed>) = 0 [pid 12070] chdir("./584" [pid 12069] <... prctl resumed>) = 0 [pid 12067] close(3 [pid 5045] rmdir("./565" [pid 12071] <... set_robust_list resumed>) = 0 [pid 12070] <... chdir resumed>) = 0 [pid 12069] setpgid(0, 0 [pid 12068] <... symlink resumed>) = 0 [pid 12067] <... close resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12070] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12069] <... setpgid resumed>) = 0 [pid 12068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12067] symlink("/dev/binderfs", "./binderfs" [pid 5045] mkdir("./566", 0777 [pid 12071] chdir("./576" [pid 12070] <... prctl resumed>) = 0 [pid 12069] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12068] <... openat resumed>) = 3 [pid 12067] <... symlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12071] <... chdir resumed>) = 0 [pid 12070] setpgid(0, 0 [pid 12069] <... symlink resumed>) = 0 [pid 12068] write(3, "1000", 4 [pid 12067] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12068] <... write resumed>) = 4 [pid 12071] <... prctl resumed>) = 0 [pid 12068] close(3 [pid 12070] <... setpgid resumed>) = 0 [pid 12069] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12068] <... close resumed>) = 0 [pid 12067] <... futex resumed>) = 0 [pid 12071] setpgid(0, 0 [pid 12070] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12069] <... symlink resumed>) = 0 [pid 12067] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12071] <... setpgid resumed>) = 0 [pid 12070] <... symlink resumed>) = 0 [pid 12068] symlink("/dev/binderfs", "./binderfs" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12070] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12067] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12071] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12070] <... symlink resumed>) = 0 [pid 12067] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12069] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12067] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12069] <... symlink resumed>) = 0 [pid 12067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12070] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12067] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12070] <... symlink resumed>) = 0 [pid 12069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12068] <... symlink resumed>) = 0 [pid 12067] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12071] <... symlink resumed>) = 0 [pid 12070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12069] <... openat resumed>) = 3 [pid 12067] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 12072 attached [pid 12071] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12070] <... openat resumed>) = 3 [pid 12069] write(3, "1000", 4 [pid 12068] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12067] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12073 attached [pid 12072] set_robust_list(0x555556ac56a0, 24 [pid 12071] <... symlink resumed>) = 0 [pid 12070] write(3, "1000", 4 [pid 12069] <... write resumed>) = 4 [pid 12068] <... futex resumed>) = 0 [pid 12072] <... set_robust_list resumed>) = 0 [pid 12071] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12070] <... write resumed>) = 4 [pid 12069] close(3 [pid 12068] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12073] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12072] chdir("./566" [pid 12070] close(3 [pid 12069] <... close resumed>) = 0 [pid 12068] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12067] <... clone3 resumed> => {parent_tid=[1163]}, 88) = 1163 [pid 12073] <... rseq resumed>) = 0 [pid 12072] <... chdir resumed>) = 0 [pid 12071] <... symlink resumed>) = 0 [pid 12070] <... close resumed>) = 0 [pid 12069] symlink("/dev/binderfs", "./binderfs" [pid 12068] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12067] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1135 [pid 12073] set_robust_list(0x7f504ff7f9a0, 24 [pid 12072] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12070] symlink("/dev/binderfs", "./binderfs" [pid 12069] <... symlink resumed>) = 0 [pid 12068] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12067] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12073] <... set_robust_list resumed>) = 0 [pid 12072] <... prctl resumed>) = 0 [pid 12070] <... symlink resumed>) = 0 [pid 12068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12073] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12067] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12068] <... mmap resumed>) = 0x7f504ff5f000 [pid 12073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12073] open(".", O_RDONLY [pid 12072] setpgid(0, 0 [pid 12070] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12067] <... futex resumed>) = 0 [pid 12072] <... setpgid resumed>) = 0 [pid 12070] <... futex resumed>) = 0 [pid 12069] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12067] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12073] <... open resumed>) = 3 [pid 12072] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12071] <... openat resumed>) = 3 [pid 12070] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12068] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12069] <... futex resumed>) = 0 [pid 12072] <... symlink resumed>) = 0 [pid 12070] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12068] <... mprotect resumed>) = 0 [pid 12070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12073] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12070] <... mmap resumed>) = 0x7f504ff5f000 [pid 12068] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12071] write(3, "1000", 4 [pid 12073] <... futex resumed>) = 1 [pid 12069] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12072] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12071] <... write resumed>) = 4 [pid 12070] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12068] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12067] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12074 attached [pid 12073] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12072] <... symlink resumed>) = 0 [pid 12071] close(3 [pid 12070] <... mprotect resumed>) = 0 [pid 12069] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12067] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12074] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12071] <... close resumed>) = 0 [pid 12069] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12073] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12071] symlink("/dev/binderfs", "./binderfs" [pid 12069] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12068] <... clone3 resumed> => {parent_tid=[1192]}, 88) = 1192 [pid 12073] <... fcntl resumed>) = 0 [pid 12069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12074] <... rseq resumed>) = 0 [pid 12073] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12070] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12069] <... mmap resumed>) = 0x7f504ff5f000 [pid 12068] rt_sigprocmask(SIG_SETMASK, [], [pid 12067] <... futex resumed>) = 0 [pid 12074] set_robust_list(0x7f504ff7f9a0, 24 [pid 12072] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12070] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12067] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12074] <... set_robust_list resumed>) = 0 [pid 12072] <... symlink resumed>) = 0 [pid 12070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12074] rt_sigprocmask(SIG_SETMASK, [], [pid 12067] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12074] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12074] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12067] <... futex resumed>) = 0 [pid 12067] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12071] <... symlink resumed>) = 0 [pid 12069] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12068] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12075 attached [pid 12073] <... futex resumed>) = 1 [pid 12072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12071] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12070] <... clone3 resumed> => {parent_tid=[1171]}, 88) = 1171 [pid 12068] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12067] <... futex resumed>) = 0 [pid 12069] <... mprotect resumed>) = 0 [pid 12075] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12073] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12072] <... openat resumed>) = 3 [pid 12071] <... futex resumed>) = 0 [pid 12070] rt_sigprocmask(SIG_SETMASK, [], [pid 12067] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=48000000} [pid 12075] <... rseq resumed>) = 0 [pid 12075] set_robust_list(0x7f504ff7f9a0, 24 [pid 12070] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12075] <... set_robust_list resumed>) = 0 [pid 12070] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12075] rt_sigprocmask(SIG_SETMASK, [], [pid 12070] <... futex resumed>) = 0 [pid 12075] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12072] write(3, "1000", 4 [pid 12070] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12075] open(".", O_RDONLY [pid 12073] <... openat resumed>) = 4 [pid 12072] <... write resumed>) = 4 [pid 12071] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12069] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12075] <... open resumed>) = 3 [pid 12072] close(3 [pid 12071] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12069] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12074] <... futex resumed>) = 0 [pid 12068] <... futex resumed>) = 1 [pid 12075] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12074] open(".", O_RDONLY [pid 12072] <... close resumed>) = 0 [pid 12069] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12075] <... futex resumed>) = 1 [pid 12074] <... open resumed>) = 3 [pid 12073] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12072] symlink("/dev/binderfs", "./binderfs" [pid 12071] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12070] <... futex resumed>) = 0 [pid 12068] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12075] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12074] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12072] <... symlink resumed>) = 0 [pid 12071] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12070] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12067] <... futex resumed>) = ? ./strace-static-x86_64: Process 12076 attached [pid 12075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12073] +++ killed by SIGIO +++ [pid 12071] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12068] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12076] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12075] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12074] <... futex resumed>) = 0 [pid 12072] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12071] <... mmap resumed>) = 0x7f504ff5f000 [pid 12070] <... futex resumed>) = 0 [pid 12069] <... clone3 resumed> => {parent_tid=[1193]}, 88) = 1193 [pid 12076] <... rseq resumed>) = 0 [pid 12075] <... fcntl resumed>) = 0 [pid 12074] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12072] <... futex resumed>) = 0 [pid 12071] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12070] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12069] rt_sigprocmask(SIG_SETMASK, [], [pid 12068] <... futex resumed>) = 0 [pid 12076] set_robust_list(0x7f504ff7f9a0, 24 [pid 12075] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12074] <... fcntl resumed>) = 0 [pid 12072] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12071] <... mprotect resumed>) = 0 [pid 12070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12069] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12068] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12076] <... set_robust_list resumed>) = 0 [pid 12075] <... futex resumed>) = 0 [pid 12074] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12072] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12071] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12070] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12069] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12076] rt_sigprocmask(SIG_SETMASK, [], [pid 12075] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12074] <... futex resumed>) = 0 [pid 12072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12070] <... futex resumed>) = 0 [pid 12069] <... futex resumed>) = 0 [pid 12070] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12069] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12068] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12074] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12072] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12071] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12068] <... futex resumed>) = 0 [pid 12071] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12068] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12074] <... openat resumed>) = 4 [pid 12076] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12076] open(".", O_RDONLY./strace-static-x86_64: Process 12077 attached [pid 12072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12067] +++ killed by SIGIO +++ [pid 12077] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12075] <... openat resumed>) = 4 [pid 12071] <... clone3 resumed> => {parent_tid=[1155]}, 88) = 1155 [pid 12077] <... rseq resumed>) = 0 [pid 12072] <... mmap resumed>) = 0x7f504ff5f000 [pid 12071] rt_sigprocmask(SIG_SETMASK, [], [pid 12077] set_robust_list(0x7f504ff7f9a0, 24 [pid 12075] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12074] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12072] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12071] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12068] <... futex resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1162, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12077] <... set_robust_list resumed>) = 0 [pid 12072] <... mprotect resumed>) = 0 [pid 12071] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12070] <... futex resumed>) = ? [pid 12077] rt_sigprocmask(SIG_SETMASK, [], [pid 12076] <... open resumed>) = 3 [pid 12072] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12077] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12076] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12071] <... futex resumed>) = 0 [pid 12076] <... futex resumed>) = 1 [pid 12069] <... futex resumed>) = 0 [pid 12076] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12069] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12076] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12069] <... futex resumed>) = 0 [pid 12076] <... fcntl resumed>) = 0 [pid 12076] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12069] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 12076] <... futex resumed>) = 0 [pid 12069] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12076] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12069] <... futex resumed>) = 0 [pid 12076] <... openat resumed>) = 4 [pid 12077] open(".", O_RDONLY [pid 12071] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12072] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12078 attached [pid 5047] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12078] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12077] <... open resumed>) = 3 [pid 12072] <... clone3 resumed> => {parent_tid=[1136]}, 88) = 1136 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12078] <... rseq resumed>) = 0 [pid 12077] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12072] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12078] set_robust_list(0x7f504ff7f9a0, 24 [pid 12077] <... futex resumed>) = 1 [pid 12072] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12071] <... futex resumed>) = 0 [pid 12078] <... set_robust_list resumed>) = 0 [pid 12077] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12076] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12075] +++ killed by SIGIO +++ [pid 12072] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12071] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12070] +++ killed by SIGIO +++ [pid 12069] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... openat resumed>) = 3 [pid 12078] rt_sigprocmask(SIG_SETMASK, [], [pid 12077] <... fcntl resumed>) = 0 [pid 12076] <... futex resumed>) = ? [pid 12072] <... futex resumed>) = 0 [pid 12071] <... futex resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1170, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] newfstatat(3, "", [pid 12078] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12077] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12076] +++ killed by SIGIO +++ [pid 12074] +++ killed by SIGIO +++ [pid 12072] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12071] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12069] +++ killed by SIGIO +++ [pid 12068] +++ killed by SIGIO +++ [pid 12078] open(".", O_RDONLY [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1191, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 12078] <... open resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 12077] <... futex resumed>) = 0 [pid 12071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... restart_syscall resumed>) = 0 [pid 12077] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12078] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] getdents64(3, [pid 12078] <... futex resumed>) = 1 [pid 12072] <... futex resumed>) = 0 [pid 12071] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12078] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12077] <... futex resumed>) = 0 [pid 12072] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12071] <... futex resumed>) = 1 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1192, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12077] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12072] <... futex resumed>) = 0 [pid 12071] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12078] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12077] <... openat resumed>) = 4 [pid 12072] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./594", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] newfstatat(AT_FDCWD, "./580/cgroup.cpu", [pid 12078] <... fcntl resumed>) = 0 [pid 12077] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12071] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12078] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 5047] unlink("./580/cgroup.cpu" [pid 12078] <... futex resumed>) = 1 [pid 12077] +++ killed by SIGIO +++ [pid 12072] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./594", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12078] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12072] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] getdents64(3, [pid 12078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12072] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12078] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12072] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] openat(AT_FDCWD, "./594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] getdents64(3, [pid 12078] <... openat resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./594/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./580/binderfs", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./594/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./594/cgroup.cpu" [pid 5050] newfstatat(3, "", [pid 5049] newfstatat(AT_FDCWD, "./584/cgroup.cpu", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./580/binderfs" [pid 5050] getdents64(3, [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] umount2("./594/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./594/binderfs", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12072] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12078] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] unlink("./584/cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5051] unlink("./594/binderfs") = 0 [pid 5050] umount2("./594/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12078] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./580/cgroup", [pid 5051] umount2("./594/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./594/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./594/cgroup" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./594/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./584/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12071] +++ killed by SIGIO +++ [pid 5051] umount2("./594/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./580/cgroup" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1154, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12072] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./594/cgroup.cpu" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1135, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] newfstatat(AT_FDCWD, "./594/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./584/binderfs" [pid 5047] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./594/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./594/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./566", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./594/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 5051] umount2("./594/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] openat(AT_FDCWD, "./566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] newfstatat(AT_FDCWD, "./594/cgroup.net", [pid 5050] unlink("./594/binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 5051] unlink("./594/cgroup.net" [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 5045] getdents64(3, [pid 5051] getdents64(3, [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] umount2("./594/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./584/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./594/cgroup", [pid 5049] unlink("./584/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./566/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./566/cgroup.cpu", [pid 5051] rmdir("./594" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] unlink("./566/cgroup.cpu" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./566/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./566/binderfs", [pid 5049] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./580/cgroup.net" [pid 5046] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] unlink("./566/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5050] unlink("./594/cgroup" [pid 5049] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 5047] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./566/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./576/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... rmdir resumed>) = 0 [pid 5049] unlink("./584/blkio.bfq.io_wait_time_recursive" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./566/cgroup", [pid 5047] close(3 [pid 5046] unlink("./576/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] mkdir("./595", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./566/cgroup") = 0 [pid 5046] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./566/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./594/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./576/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./566/blkio.bfq.io_wait_time_recursive", [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./580" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./594/blkio.bfq.io_wait_time_recursive", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 5046] unlink("./576/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./566/blkio.bfq.io_wait_time_recursive") = 0 [pid 5050] unlink("./594/blkio.bfq.io_wait_time_recursive" [pid 5047] <... rmdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./584/cgroup.net" [pid 5047] mkdir("./581", 0777 [pid 5046] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./566/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./576/cgroup", [pid 5050] umount2("./594/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./566/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./594/cgroup.net", [pid 5046] unlink("./576/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./566/cgroup.net"./strace-static-x86_64: Process 12080 attached ./strace-static-x86_64: Process 12079 attached [pid 5050] unlink("./594/cgroup.net" [pid 5049] close(3 [pid 5046] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 12080] set_robust_list(0x555556ac56a0, 24 [pid 12079] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1193 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1164 [pid 12080] <... set_robust_list resumed>) = 0 [pid 12079] <... set_robust_list resumed>) = 0 [pid 5049] rmdir("./584" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12080] chdir("./595" [pid 12079] chdir("./581" [pid 5050] getdents64(3, [pid 5049] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", [pid 5045] getdents64(3, [pid 12080] <... chdir resumed>) = 0 [pid 12079] <... chdir resumed>) = 0 [pid 5049] mkdir("./585", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12079] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3) = 0 [pid 5045] close(3) = 0 [pid 12079] <... prctl resumed>) = 0 [pid 12080] <... prctl resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./576/blkio.bfq.io_wait_time_recursive" [pid 12080] setpgid(0, 0 [pid 5050] rmdir("./594" [pid 5045] rmdir("./566" [pid 5050] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12081 attached [pid 12080] <... setpgid resumed>) = 0 [pid 12079] setpgid(0, 0 [pid 5050] mkdir("./595", 0777 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1172 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12081] set_robust_list(0x555556ac56a0, 24 [pid 12080] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12079] <... setpgid resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12081] <... set_robust_list resumed>) = 0 [pid 12080] <... symlink resumed>) = 0 [pid 12079] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5045] mkdir("./567", 0777 [pid 12080] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 12079] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 12081] chdir("./585" [pid 5046] newfstatat(AT_FDCWD, "./576/cgroup.net", [pid 12081] <... chdir resumed>) = 0 [pid 12080] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12079] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12080] <... symlink resumed>) = 0 [pid 12079] <... symlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12081] <... prctl resumed>) = 0 [pid 12080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12079] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5046] unlink("./576/cgroup.net"./strace-static-x86_64: Process 12083 attached ./strace-static-x86_64: Process 12082 attached [pid 12081] setpgid(0, 0 [pid 12080] <... openat resumed>) = 3 [pid 12079] <... symlink resumed>) = 0 [pid 12083] set_robust_list(0x555556ac56a0, 24 [pid 12082] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1137 [pid 12083] <... set_robust_list resumed>) = 0 [pid 12082] <... set_robust_list resumed>) = 0 [pid 12081] <... setpgid resumed>) = 0 [pid 12079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12083] chdir("./567" [pid 12082] chdir("./595" [pid 12081] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12080] write(3, "1000", 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1194 [pid 5046] getdents64(3, [pid 12083] <... chdir resumed>) = 0 [pid 12082] <... chdir resumed>) = 0 [pid 12079] <... openat resumed>) = 3 [pid 12083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12080] <... write resumed>) = 4 [pid 12079] write(3, "1000", 4 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12079] <... write resumed>) = 4 [pid 12083] <... prctl resumed>) = 0 [pid 12082] <... prctl resumed>) = 0 [pid 12079] close(3 [pid 12083] setpgid(0, 0) = 0 [pid 12082] setpgid(0, 0 [pid 12080] close(3 [pid 12079] <... close resumed>) = 0 [pid 5046] close(3 [pid 12081] <... symlink resumed>) = 0 [pid 12083] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12082] <... setpgid resumed>) = 0 [pid 12081] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12080] <... close resumed>) = 0 [pid 12079] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... close resumed>) = 0 [pid 12083] <... symlink resumed>) = 0 [pid 12082] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12080] symlink("/dev/binderfs", "./binderfs" [pid 12079] <... symlink resumed>) = 0 [pid 12083] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12080] <... symlink resumed>) = 0 [pid 5046] rmdir("./576" [pid 12082] <... symlink resumed>) = 0 [pid 12083] <... symlink resumed>) = 0 [pid 12083] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12082] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12081] <... symlink resumed>) = 0 [pid 12080] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12079] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... rmdir resumed>) = 0 [pid 12081] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12080] <... futex resumed>) = 0 [pid 12082] <... symlink resumed>) = 0 [pid 12083] <... symlink resumed>) = 0 [pid 12083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12079] <... futex resumed>) = 0 [pid 12083] <... openat resumed>) = 3 [pid 12082] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12081] <... symlink resumed>) = 0 [pid 12080] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12079] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] mkdir("./577", 0777 [pid 12081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12080] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12079] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12080] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12083] write(3, "1000", 4 [pid 12080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12083] <... write resumed>) = 4 [pid 12082] <... symlink resumed>) = 0 [pid 12083] close(3) = 0 [pid 12080] <... mmap resumed>) = 0x7f504ff5f000 [pid 12083] symlink("/dev/binderfs", "./binderfs" [pid 12080] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12079] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12081] <... openat resumed>) = 3 [pid 12080] <... mprotect resumed>) = 0 [pid 12079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12083] <... symlink resumed>) = 0 [pid 12081] write(3, "1000", 4) = 4 [pid 12079] <... mmap resumed>) = 0x7f504ff5f000 [pid 12081] close(3 [pid 12083] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12082] <... openat resumed>) = 3 [pid 12081] <... close resumed>) = 0 [pid 12079] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12081] symlink("/dev/binderfs", "./binderfs" [pid 12082] write(3, "1000", 4 [pid 12081] <... symlink resumed>) = 0 [pid 12080] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12079] <... mprotect resumed>) = 0 [pid 12082] <... write resumed>) = 4 [pid 12080] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12082] close(3 [pid 12080] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12082] <... close resumed>) = 0 [pid 12083] <... futex resumed>) = 0 [pid 12081] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12083] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12081] <... futex resumed>) = 0 [pid 12083] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12081] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12083] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12081] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12083] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12081] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12081] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12083] <... mmap resumed>) = 0x7f504ff5f000 [pid 12081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12083] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12081] <... mmap resumed>) = 0x7f504ff5f000 [pid 12081] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12084 attached [pid 12083] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12082] symlink("/dev/binderfs", "./binderfs" [pid 12081] <... mprotect resumed>) = 0 [pid 12084] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12081] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12084] chdir("./577" [pid 12083] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12083] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12079] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12081] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 12086 attached [pid 12084] <... chdir resumed>) = 0 [pid 12081] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12085 attached [pid 12086] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12082] <... symlink resumed>) = 0 [pid 12080] <... clone3 resumed> => {parent_tid=[1194]}, 88) = 1194 [pid 12079] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1156 [pid 12083] <... clone3 resumed> => {parent_tid=[1138]}, 88) = 1138 [pid 12082] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12080] rt_sigprocmask(SIG_SETMASK, [], [pid 12079] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12082] <... futex resumed>) = 0 [pid 12080] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12082] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12080] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12087 attached [pid 12086] <... rseq resumed>) = 0 [pid 12085] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12084] <... prctl resumed>) = 0 [pid 12082] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12081] <... clone3 resumed> => {parent_tid=[1173]}, 88) = 1173 [pid 12080] <... futex resumed>) = 0 [pid 12087] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12086] set_robust_list(0x7f504ff7f9a0, 24 [pid 12085] <... rseq resumed>) = 0 [pid 12083] rt_sigprocmask(SIG_SETMASK, [], [pid 12082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12080] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12086] <... set_robust_list resumed>) = 0 [pid 12087] <... rseq resumed>) = 0 [pid 12086] rt_sigprocmask(SIG_SETMASK, [], [pid 12081] rt_sigprocmask(SIG_SETMASK, [], [pid 12087] set_robust_list(0x7f504ff7f9a0, 24 [pid 12086] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12085] set_robust_list(0x7f504ff7f9a0, 24 [pid 12084] setpgid(0, 0 [pid 12083] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12087] <... set_robust_list resumed>) = 0 [pid 12086] open(".", O_RDONLY [pid 12085] <... set_robust_list resumed>) = 0 [pid 12084] <... setpgid resumed>) = 0 [pid 12083] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12081] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12079] <... clone3 resumed> => {parent_tid=[1165]}, 88) = 1165 [pid 12087] rt_sigprocmask(SIG_SETMASK, [], [pid 12086] <... open resumed>) = 3 [pid 12085] rt_sigprocmask(SIG_SETMASK, [], [pid 12083] <... futex resumed>) = 0 [pid 12087] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12084] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12082] <... mmap resumed>) = 0x7f504ff5f000 [pid 12081] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12079] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 12088 attached [pid 12087] open(".", O_RDONLY [pid 12085] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12086] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12084] <... symlink resumed>) = 0 [pid 12083] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12082] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12081] <... futex resumed>) = 0 [pid 12079] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12088] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12087] <... open resumed>) = 3 [pid 12086] <... futex resumed>) = 1 [pid 12085] open(".", O_RDONLY [pid 12081] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12080] <... futex resumed>) = 0 [pid 12088] <... rseq resumed>) = 0 [pid 12087] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12086] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12085] <... open resumed>) = 3 [pid 12081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12080] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12079] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12088] set_robust_list(0x7f504ff7f9a0, 24 [pid 12087] <... futex resumed>) = 0 [pid 12086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12085] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12081] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12080] <... futex resumed>) = 0 [pid 12088] <... set_robust_list resumed>) = 0 [pid 12087] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12086] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12085] <... futex resumed>) = 0 [pid 12083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12082] <... mprotect resumed>) = 0 [pid 12081] <... futex resumed>) = 0 [pid 12080] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12079] <... futex resumed>) = 0 [pid 12084] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12088] rt_sigprocmask(SIG_SETMASK, [], [pid 12087] <... fcntl resumed>) = 0 [pid 12086] <... fcntl resumed>) = 0 [pid 12085] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12079] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12088] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12087] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12086] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12085] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12083] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12082] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12081] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12088] open(".", O_RDONLY [pid 12087] <... futex resumed>) = 0 [pid 12086] <... futex resumed>) = 1 [pid 12085] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12084] <... symlink resumed>) = 0 [pid 12083] <... futex resumed>) = 0 [pid 12082] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12080] <... futex resumed>) = 0 [pid 12087] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12086] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12085] <... fcntl resumed>) = 0 [pid 12081] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12080] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12088] <... open resumed>) = 3 [pid 12087] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12085] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12084] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12083] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12081] <... futex resumed>) = 0 [pid 12080] <... futex resumed>) = 0 [pid 12088] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12087] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12086] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12085] <... futex resumed>) = 0 [pid 12084] <... symlink resumed>) = 0 [pid 12083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12081] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12080] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12086] <... openat resumed>) = 4 [pid 12083] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12082] <... clone3 resumed> => {parent_tid=[1195]}, 88) = 1195 [pid 12083] <... futex resumed>) = 0 [pid 12087] <... openat resumed>) = 4 [pid 12086] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12083] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12082] rt_sigprocmask(SIG_SETMASK, [], [pid 12081] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12080] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12088] <... futex resumed>) = 1 [pid 12082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12079] <... futex resumed>) = 0 [pid 12088] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12085] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12082] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12079] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12087] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12086] +++ killed by SIGIO +++ [pid 12085] <... openat resumed>) = 4 [pid 12084] <... openat resumed>) = 3 [pid 12082] <... futex resumed>) = 0 [pid 12081] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12079] <... futex resumed>) = 0 [pid 12088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12084] write(3, "1000", 4 [pid 12079] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12088] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12087] <... futex resumed>) = ? [pid 12088] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 12089 attached [pid 12088] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12085] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12084] <... write resumed>) = 4 [pid 12082] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12080] +++ killed by SIGIO +++ [pid 12088] <... futex resumed>) = 1 [pid 12079] <... futex resumed>) = 0 [pid 12088] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12079] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12079] <... futex resumed>) = 0 [pid 12088] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12079] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12089] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12084] close(3 [pid 12083] <... futex resumed>) = ? [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1193, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12089] <... rseq resumed>) = 0 [pid 12088] <... openat resumed>) = 4 [pid 12085] +++ killed by SIGIO +++ [pid 12084] <... close resumed>) = 0 [pid 12079] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12089] set_robust_list(0x7f504ff7f9a0, 24 [pid 12088] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12087] +++ killed by SIGIO +++ [pid 12084] symlink("/dev/binderfs", "./binderfs" [pid 12081] +++ killed by SIGIO +++ [pid 12079] symlink("/dev/binderfs", "./binderfs" [pid 12089] <... set_robust_list resumed>) = 0 [pid 12084] <... symlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1172, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12089] rt_sigprocmask(SIG_SETMASK, [], [pid 12084] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./595", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12089] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12084] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12089] open(".", O_RDONLY) = 3 [pid 12084] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] openat(AT_FDCWD, "./595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12084] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12089] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12083] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 12089] <... futex resumed>) = 1 [pid 12084] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12082] <... futex resumed>) = 0 [pid 5049] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12089] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12089] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12082] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1137, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 12089] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12084] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12089] <... fcntl resumed>) = 0 [pid 12082] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5045] umount2("./567", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12089] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12084] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12082] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12089] <... futex resumed>) = 0 [pid 12084] <... mprotect resumed>) = 0 [pid 12082] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12089] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12084] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./595/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 5045] openat(AT_FDCWD, "./567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12089] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12082] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12089] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12084] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12082] <... futex resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 12088] +++ killed by SIGIO +++ [pid 12079] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./595/cgroup.cpu", [pid 5049] getdents64(3, [pid 12084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12082] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12090 attached [pid 12089] <... openat resumed>) = ? [pid 5051] unlink("./595/cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1164, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] newfstatat(3, "", [pid 12090] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12089] +++ killed by SIGIO +++ [pid 12084] <... clone3 resumed> => {parent_tid=[1157]}, 88) = 1157 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12090] <... rseq resumed>) = 0 [pid 12084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12090] set_robust_list(0x7f504ff7f9a0, 24 [pid 12084] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12090] <... set_robust_list resumed>) = 0 [pid 12084] <... futex resumed>) = 0 [pid 5051] umount2("./595/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12090] rt_sigprocmask(SIG_SETMASK, [], [pid 12084] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 12090] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./595/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./567/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12090] open(".", O_RDONLY [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12090] <... open resumed>) = 3 [pid 5051] unlink("./595/binderfs" [pid 5049] unlink("./585/cgroup.cpu" [pid 5047] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12090] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12082] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./567/cgroup.cpu", [pid 12090] <... futex resumed>) = 1 [pid 12084] <... futex resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12084] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1194, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12084] <... futex resumed>) = 0 [pid 12084] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12090] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] umount2("./595/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5045] unlink("./567/cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./595/cgroup", [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./585/binderfs", [pid 5047] getdents64(3, [pid 5051] unlink("./595/cgroup" [pid 5045] umount2("./567/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./595", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./567/binderfs", [pid 12090] <... fcntl resumed>) = 0 [pid 5049] unlink("./585/binderfs" [pid 5047] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./581/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12090] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./595/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12090] <... futex resumed>) = 1 [pid 12084] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./567/binderfs" [pid 12090] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12084] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12084] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./595/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./585/cgroup", [pid 5047] unlink("./581/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./567/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12090] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12084] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./595/blkio.bfq.io_wait_time_recursive" [pid 5050] getdents64(3, [pid 5049] unlink("./585/cgroup") = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 12090] <... openat resumed>) = 4 [pid 5045] newfstatat(AT_FDCWD, "./567/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./585/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./595/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./585/cgroup.net" [pid 5047] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./567/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] newfstatat(AT_FDCWD, "./581/binderfs", [pid 5050] newfstatat(AT_FDCWD, "./595/cgroup.cpu", [pid 5049] close(3) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./595/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./595/cgroup.cpu" [pid 5049] rmdir("./585" [pid 12090] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12084] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] newfstatat(AT_FDCWD, "./595/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] unlink("./581/binderfs" [pid 5045] umount2("./567/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./586", 0777 [pid 12084] restart_syscall(<... resuming interrupted futex ...> [pid 5049] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12091 attached [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1174 [pid 5047] <... unlink resumed>) = 0 [pid 5051] unlink("./595/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./595/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12091] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12091] chdir("./586" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./567/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./581/cgroup", [pid 12091] <... chdir resumed>) = 0 [pid 12091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12091] setpgid(0, 0) = 0 [pid 12091] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12091] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./595/binderfs", [pid 12091] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 12091] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./581/cgroup" [pid 5045] unlink("./567/blkio.bfq.io_wait_time_recursive" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./595/binderfs" [pid 12091] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... unlink resumed>) = 0 [pid 12091] <... openat resumed>) = 3 [pid 5051] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12091] write(3, "1000", 4 [pid 5051] <... close resumed>) = 0 [pid 5050] umount2("./595/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./567/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] rmdir("./595" [pid 5047] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", [pid 12091] <... write resumed>) = 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12091] close(3) = 0 [pid 12091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 12091] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] newfstatat(AT_FDCWD, "./595/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./567/cgroup.net", [pid 5051] mkdir("./596", 0777 [pid 5047] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 12091] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12091] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12091] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5050] unlink("./595/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5045] unlink("./567/cgroup.net" [pid 12091] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12090] +++ killed by SIGIO +++ [pid 12084] +++ killed by SIGIO +++ [pid 12091] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5047] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5050] umount2("./595/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1156, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12091] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./581/cgroup.net", [pid 5046] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12091] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 12091] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] newfstatat(AT_FDCWD, "./595/blkio.bfq.io_wait_time_recursive", [pid 5047] unlink("./581/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12091] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3 [pid 5046] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12091] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12092 attached [pid 5050] unlink("./595/blkio.bfq.io_wait_time_recursive" [pid 5047] getdents64(3, [pid 5046] <... openat resumed>) = 3 [pid 5045] <... close resumed>) = 0 [pid 12092] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12091] <... clone3 resumed> => {parent_tid=[1175]}, 88) = 1175 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(3, "", [pid 5045] rmdir("./567" [pid 12092] <... rseq resumed>) = 0 [pid 5047] close(3./strace-static-x86_64: Process 12093 attached [pid 12092] set_robust_list(0x7f504ff7f9a0, 24 [pid 12091] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12093] set_robust_list(0x555556ac56a0, 24 [pid 12092] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1195 [pid 12091] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12091] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12091] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] mkdir("./568", 0777 [pid 12093] <... set_robust_list resumed>) = 0 [pid 12092] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./595/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] rmdir("./581" [pid 5046] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12093] chdir("./596" [pid 5050] newfstatat(AT_FDCWD, "./595/cgroup.net", [pid 12092] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12092] open(".", O_RDONLY [pid 5047] <... rmdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] unlink("./595/cgroup.net") = 0 [pid 12093] <... chdir resumed>) = 0 [pid 5046] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./577/cgroup.cpu", ./strace-static-x86_64: Process 12094 attached [pid 12093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] getdents64(3, [pid 5047] mkdir("./582", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12094] set_robust_list(0x555556ac56a0, 24 [pid 12093] <... prctl resumed>) = 0 [pid 12092] <... open resumed>) = 3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./577/cgroup.cpu" [pid 12094] <... set_robust_list resumed>) = 0 [pid 12093] setpgid(0, 0 [pid 12092] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] close(3 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1139 [pid 12094] chdir("./568" [pid 12093] <... setpgid resumed>) = 0 [pid 12092] <... futex resumed>) = 1 [pid 12091] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12094] <... chdir resumed>) = 0 [pid 12093] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12093] <... symlink resumed>) = 0 [pid 12092] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12091] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./595" [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12094] <... prctl resumed>) = 0 [pid 12093] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12091] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12092] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12091] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12094] setpgid(0, 0 [pid 12093] <... symlink resumed>) = 0 [pid 12092] <... fcntl resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./577/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12095 attached [pid 12094] <... setpgid resumed>) = 0 [pid 12093] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12092] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] mkdir("./596", 0777 [pid 12095] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1166 [pid 12095] <... set_robust_list resumed>) = 0 [pid 12095] chdir("./582") = 0 [pid 5046] unlink("./577/binderfs" [pid 12095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12095] setpgid(0, 0 [pid 12094] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12095] <... setpgid resumed>) = 0 [pid 12095] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12093] <... symlink resumed>) = 0 [pid 12095] <... symlink resumed>) = 0 [pid 12094] <... symlink resumed>) = 0 [pid 12095] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5050] <... mkdir resumed>) = 0 [pid 12093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12095] <... symlink resumed>) = 0 [pid 12095] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12092] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 12091] <... futex resumed>) = 0 [pid 12092] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12091] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12095] <... symlink resumed>) = 0 [pid 12094] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12091] <... futex resumed>) = 0 [pid 12095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12095] write(3, "1000", 4) = 4 [pid 12095] close(3) = 0 [pid 12095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12095] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12095] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12095] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ./strace-static-x86_64: Process 12096 attached [pid 12095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12096] set_robust_list(0x555556ac56a0, 24 [pid 12095] <... mmap resumed>) = 0x7f504ff5f000 [pid 12093] <... openat resumed>) = 3 [pid 12092] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12091] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12096] <... set_robust_list resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./577/cgroup", [pid 12096] chdir("./596" [pid 12095] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12095] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12092] <... openat resumed>) = 4 [pid 12096] <... chdir resumed>) = 0 [pid 12096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12096] setpgid(0, 0) = 0 [pid 12095] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12096] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12095] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12094] <... symlink resumed>) = 0 [pid 12092] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12091] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12093] write(3, "1000", 4./strace-static-x86_64: Process 12097 attached [pid 12096] <... symlink resumed>) = 0 [pid 12095] <... clone3 resumed> => {parent_tid=[1167]}, 88) = 1167 [pid 12094] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12093] <... write resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1196 [pid 5046] unlink("./577/cgroup" [pid 12097] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12096] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12095] rt_sigprocmask(SIG_SETMASK, [], [pid 12093] close(3 [pid 12097] <... rseq resumed>) = 0 [pid 12097] set_robust_list(0x7f504ff7f9a0, 24 [pid 12095] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12097] <... set_robust_list resumed>) = 0 [pid 12095] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12093] <... close resumed>) = 0 [pid 12097] rt_sigprocmask(SIG_SETMASK, [], [pid 12096] <... symlink resumed>) = 0 [pid 12095] <... futex resumed>) = 0 [pid 12097] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12095] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12097] open(".", O_RDONLY [pid 12096] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12097] <... open resumed>) = 3 [pid 12096] <... symlink resumed>) = 0 [pid 12097] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12095] <... futex resumed>) = 0 [pid 12095] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12097] <... futex resumed>) = 1 [pid 12095] <... futex resumed>) = 0 [pid 12097] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12093] symlink("/dev/binderfs", "./binderfs" [pid 5046] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12095] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12097] <... fcntl resumed>) = 0 [pid 12097] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12095] <... futex resumed>) = 0 [pid 12095] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12095] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12097] <... futex resumed>) = 1 [pid 12093] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12093] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 12097] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12094] <... symlink resumed>) = 0 [pid 12097] <... openat resumed>) = 4 [pid 12093] <... futex resumed>) = 0 [pid 12092] +++ killed by SIGIO +++ [pid 12091] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12093] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1174, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12093] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12093] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12093] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12094] <... openat resumed>) = 3 [pid 12093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12097] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12094] write(3, "1000", 4 [pid 5049] newfstatat(3, "", [pid 5046] newfstatat(AT_FDCWD, "./577/cgroup.net", [pid 12095] <... futex resumed>) = ? [pid 12093] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./577/cgroup.net" [pid 12093] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12097] +++ killed by SIGIO +++ [pid 12096] <... openat resumed>) = 3 [pid 12094] <... write resumed>) = 4 [pid 12093] <... mprotect resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 12096] write(3, "1000", 4 [pid 12094] close(3 [pid 12093] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12096] <... write resumed>) = 4 [pid 12094] <... close resumed>) = 0 [pid 12093] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12096] close(3 [pid 12094] symlink("/dev/binderfs", "./binderfs" [pid 12093] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] getdents64(3, [pid 12096] <... close resumed>) = 0 ./strace-static-x86_64: Process 12098 attached [pid 12094] <... symlink resumed>) = 0 [pid 5049] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12098] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12096] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12098] <... rseq resumed>) = 0 [pid 12096] <... symlink resumed>) = 0 [pid 12095] +++ killed by SIGIO +++ [pid 12094] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12093] <... clone3 resumed> => {parent_tid=[1196]}, 88) = 1196 [pid 5049] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 12098] set_robust_list(0x7f504ff7f9a0, 24 [pid 12096] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12094] <... futex resumed>) = 0 [pid 12093] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] close(3 [pid 12096] <... futex resumed>) = 0 [pid 12094] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12093] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1166, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... close resumed>) = 0 [pid 12096] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12094] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12093] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] rmdir("./577" [pid 12096] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12094] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12093] <... futex resumed>) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 12096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12094] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12093] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12096] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] unlink("./586/cgroup.cpu" [pid 12098] <... set_robust_list resumed>) = 0 [pid 12098] rt_sigprocmask(SIG_SETMASK, [], [pid 12096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12094] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./578", 0777 [pid 12098] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12094] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12098] open(".", O_RDONLY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 12098] <... open resumed>) = 3 [pid 12094] <... mprotect resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./586/binderfs", [pid 5047] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12098] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12096] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12098] <... futex resumed>) = 1 [pid 12093] <... futex resumed>) = 0 [pid 5049] unlink("./586/binderfs" [pid 12096] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... openat resumed>) = 3 [pid 12098] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12094] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12093] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12093] <... futex resumed>) = 0 [pid 5049] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(3, "", [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12098] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12096] <... mprotect resumed>) = 0 [pid 12094] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12093] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12098] <... fcntl resumed>) = 0 [pid 12096] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12094] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./586/cgroup", [pid 5047] getdents64(3, ./strace-static-x86_64: Process 12099 attached ./strace-static-x86_64: Process 12100 attached [pid 12098] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12096] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12098] <... futex resumed>) = 1 [pid 12096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12094] <... clone3 resumed> => {parent_tid=[1140]}, 88) = 1140 [pid 12093] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 12101 attached [pid 12099] set_robust_list(0x555556ac56a0, 24 [pid 12100] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12098] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12094] rt_sigprocmask(SIG_SETMASK, [], [pid 12093] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1158 [pid 12101] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12099] <... set_robust_list resumed>) = 0 [pid 12100] <... rseq resumed>) = 0 [pid 12098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12096] <... clone3 resumed> => {parent_tid=[1197]}, 88) = 1197 [pid 12094] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12093] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12101] <... rseq resumed>) = 0 [pid 12099] chdir("./578" [pid 12100] set_robust_list(0x7f504ff7f9a0, 24 [pid 12098] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12096] rt_sigprocmask(SIG_SETMASK, [], [pid 12094] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12093] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 12101] set_robust_list(0x7f504ff7f9a0, 24 [pid 12099] <... chdir resumed>) = 0 [pid 12100] <... set_robust_list resumed>) = 0 [pid 12098] <... openat resumed>) = 4 [pid 12096] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12094] <... futex resumed>) = 0 [pid 5049] unlink("./586/cgroup" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12093] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12101] <... set_robust_list resumed>) = 0 [pid 12099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12100] rt_sigprocmask(SIG_SETMASK, [], [pid 12098] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12096] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12094] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12101] rt_sigprocmask(SIG_SETMASK, [], [pid 12100] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12099] <... prctl resumed>) = 0 [pid 12096] <... futex resumed>) = 0 [pid 5047] unlink("./582/cgroup.cpu" [pid 12101] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12099] setpgid(0, 0 [pid 12100] open(".", O_RDONLY [pid 12096] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12101] open(".", O_RDONLY [pid 12098] +++ killed by SIGIO +++ [pid 5049] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12101] <... open resumed>) = 3 [pid 12099] <... setpgid resumed>) = 0 [pid 12100] <... open resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12100] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 12100] <... futex resumed>) = 1 [pid 12094] <... futex resumed>) = 0 [pid 12101] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12100] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12094] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./582/binderfs", [pid 12101] <... futex resumed>) = 1 [pid 12096] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12101] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12096] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12096] <... futex resumed>) = 0 [pid 12101] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12099] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12100] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12096] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12094] <... futex resumed>) = 0 [pid 5049] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./582/binderfs" [pid 12101] <... fcntl resumed>) = 0 [pid 12099] <... symlink resumed>) = 0 [pid 12100] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12094] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12093] +++ killed by SIGIO +++ [pid 12101] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12099] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12100] <... fcntl resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12099] <... symlink resumed>) = 0 [pid 12100] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12094] <... futex resumed>) = 0 [pid 12099] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12100] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12094] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12099] <... symlink resumed>) = 0 [pid 12100] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12094] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12100] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12094] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12101] <... futex resumed>) = 1 [pid 12099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12100] <... openat resumed>) = 4 [pid 12096] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1195, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 12101] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12100] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12096] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12094] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12099] <... openat resumed>) = 3 [pid 12096] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12101] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12099] write(3, "1000", 4 [pid 12100] +++ killed by SIGIO +++ [pid 12096] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./596", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./586/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./582/cgroup", [pid 12101] <... openat resumed>) = 4 [pid 12099] <... write resumed>) = 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12099] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./582/cgroup" [pid 12099] <... close resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12099] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12101] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12099] <... symlink resumed>) = 0 [pid 12096] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] getdents64(3, [pid 5051] newfstatat(3, "", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12101] +++ killed by SIGIO +++ [pid 12099] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12096] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12099] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./586" [pid 12094] +++ killed by SIGIO +++ [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12099] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12099] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] umount2("./596/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12099] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./582/blkio.bfq.io_wait_time_recursive" [pid 12099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] mkdir("./587", 0777 [pid 5047] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1196, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12099] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1139, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./582/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./582/cgroup.net" [pid 12099] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./568", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 12099] <... mprotect resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 12099] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] rmdir("./582" [pid 12099] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5047] mkdir("./583", 0777) = 0 [pid 5051] newfstatat(AT_FDCWD, "./596/cgroup.cpu", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12102 attached [pid 12099] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 12103 attached [pid 12102] set_robust_list(0x555556ac56a0, 24 [pid 5051] unlink("./596/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12103] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12102] <... set_robust_list resumed>) = 0 [pid 12099] <... clone3 resumed> => {parent_tid=[1159]}, 88) = 1159 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1176 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 12104 attached [pid 12103] <... rseq resumed>) = 0 [pid 12099] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./596/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12104] set_robust_list(0x555556ac56a0, 24 [pid 12103] set_robust_list(0x7f504ff7f9a0, 24 [pid 12102] chdir("./587" [pid 12099] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1168 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12104] <... set_robust_list resumed>) = 0 [pid 12103] <... set_robust_list resumed>) = 0 [pid 12102] <... chdir resumed>) = 0 [pid 12099] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./596/binderfs", [pid 5045] umount2("./568/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12103] rt_sigprocmask(SIG_SETMASK, [], [pid 12102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12099] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12103] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12102] <... prctl resumed>) = 0 [pid 12099] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./568/cgroup.cpu", [pid 12104] chdir("./583" [pid 12103] open(".", O_RDONLY [pid 12102] setpgid(0, 0 [pid 12104] <... chdir resumed>) = 0 [pid 12103] <... open resumed>) = 3 [pid 5051] unlink("./596/binderfs" [pid 5050] umount2("./596", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12102] <... setpgid resumed>) = 0 [pid 5045] unlink("./568/cgroup.cpu" [pid 12104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12102] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12104] <... prctl resumed>) = 0 [pid 12103] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 12102] <... symlink resumed>) = 0 [pid 12104] setpgid(0, 0 [pid 12102] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] openat(AT_FDCWD, "./596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./568/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12104] <... setpgid resumed>) = 0 [pid 12103] <... futex resumed>) = 1 [pid 12102] <... symlink resumed>) = 0 [pid 12099] <... futex resumed>) = 0 [pid 5051] umount2("./596/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 12104] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12103] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12102] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12099] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./596/cgroup", [pid 5050] newfstatat(3, "", [pid 12103] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12102] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(AT_FDCWD, "./568/binderfs", [pid 12103] <... fcntl resumed>) = 0 [pid 5051] unlink("./596/cgroup" [pid 5050] getdents64(3, [pid 12104] <... symlink resumed>) = 0 [pid 12102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12099] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12104] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12103] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12102] <... openat resumed>) = 3 [pid 12099] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./596/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] unlink("./568/binderfs" [pid 12099] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12104] <... symlink resumed>) = 0 [pid 12104] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12103] <... futex resumed>) = 0 [pid 12102] write(3, "1000", 4 [pid 12099] <... futex resumed>) = 0 [pid 5051] umount2("./596/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 12103] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12099] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./596/cgroup.cpu", [pid 5045] umount2("./568/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./568/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12103] <... openat resumed>) = 4 [pid 5045] unlink("./568/cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./596/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./568/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./568/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./568/blkio.bfq.io_wait_time_recursive" [pid 12104] <... symlink resumed>) = 0 [pid 12102] <... write resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12102] close(3 [pid 12104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./596/blkio.bfq.io_wait_time_recursive" [pid 5050] unlink("./596/cgroup.cpu" [pid 12102] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./568/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./568/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./568/cgroup.net" [pid 12102] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5045] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 5045] rmdir("./568" [pid 12102] <... symlink resumed>) = 0 [pid 5050] umount2("./596/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./596/binderfs", [pid 12103] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./596/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 12099] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] newfstatat(AT_FDCWD, "./596/cgroup.net", [pid 12104] <... openat resumed>) = 3 [pid 12103] +++ killed by SIGIO +++ [pid 12102] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./596/binderfs" [pid 12104] write(3, "1000", 4 [pid 12102] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] mkdir("./569", 0777 [pid 12104] <... write resumed>) = 4 [pid 5051] unlink("./596/cgroup.net") = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3) = 0 [pid 5051] rmdir("./596" [pid 12099] +++ killed by SIGIO +++ [pid 12102] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... rmdir resumed>) = 0 [pid 5051] mkdir("./597", 0777 [pid 5045] <... mkdir resumed>) = 0 [pid 12104] close(3 [pid 12102] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./596/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12104] <... close resumed>) = 0 [pid 12102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... mkdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12104] symlink("/dev/binderfs", "./binderfs" [pid 12102] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1158, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12104] <... symlink resumed>) = 0 [pid 12102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./596/cgroup", ./strace-static-x86_64: Process 12105 attached [pid 12102] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12105] set_robust_list(0x555556ac56a0, 24 [pid 12104] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12102] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1197 [pid 5050] unlink("./596/cgroup" [pid 12104] <... futex resumed>) = 0 [pid 12105] <... set_robust_list resumed>) = 0 [pid 12105] chdir("./597" [pid 12104] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12102] <... mprotect resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12105] <... chdir resumed>) = 0 [pid 12105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12104] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12105] <... prctl resumed>) = 0 [pid 12104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12102] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12104] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12102] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] umount2("./596/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12105] setpgid(0, 0) = 0 [pid 12104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12105] symlink("/syzcgroup/unified/syz5", "./cgroup"./strace-static-x86_64: Process 12107 attached ./strace-static-x86_64: Process 12106 attached [pid 12104] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] newfstatat(AT_FDCWD, "./596/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12106] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12105] <... symlink resumed>) = 0 [pid 12102] <... clone3 resumed> => {parent_tid=[1177]}, 88) = 1177 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12107] set_robust_list(0x555556ac56a0, 24 [pid 12104] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12102] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./596/blkio.bfq.io_wait_time_recursive" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1141 [pid 12107] <... set_robust_list resumed>) = 0 [pid 12106] <... rseq resumed>) = 0 [pid 12105] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12102] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12106] set_robust_list(0x7f504ff7f9a0, 24 [pid 12105] <... symlink resumed>) = 0 [pid 12104] <... mprotect resumed>) = 0 [pid 12106] <... set_robust_list resumed>) = 0 [pid 12105] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12107] chdir("./569" [pid 12106] rt_sigprocmask(SIG_SETMASK, [], [pid 12105] <... symlink resumed>) = 0 [pid 12104] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12102] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 12106] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12107] <... chdir resumed>) = 0 [pid 12106] open(".", O_RDONLY [pid 12105] <... openat resumed>) = 3 [pid 12104] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12102] <... futex resumed>) = 0 [pid 5050] umount2("./596/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 12107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12102] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12108 attached [pid 12107] <... prctl resumed>) = 0 [pid 12106] <... open resumed>) = 3 [pid 12105] write(3, "1000", 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12108] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12107] setpgid(0, 0 [pid 12104] <... clone3 resumed> => {parent_tid=[1169]}, 88) = 1169 [pid 12108] <... rseq resumed>) = 0 [pid 12104] rt_sigprocmask(SIG_SETMASK, [], [pid 12108] set_robust_list(0x7f504ff7f9a0, 24 [pid 12107] <... setpgid resumed>) = 0 [pid 12104] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12108] <... set_robust_list resumed>) = 0 [pid 12107] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12106] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12105] <... write resumed>) = 4 [pid 12104] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./596/cgroup.net", [pid 5046] getdents64(3, [pid 12108] rt_sigprocmask(SIG_SETMASK, [], [pid 12106] <... futex resumed>) = 1 [pid 12105] close(3 [pid 12104] <... futex resumed>) = 0 [pid 12102] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12107] <... symlink resumed>) = 0 [pid 12108] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12106] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12105] <... close resumed>) = 0 [pid 12102] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12104] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12105] symlink("/dev/binderfs", "./binderfs" [pid 5050] unlink("./596/cgroup.net" [pid 5046] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12108] open(".", O_RDONLY [pid 12107] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12106] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12105] <... symlink resumed>) = 0 [pid 12102] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 12108] <... open resumed>) = 3 [pid 12102] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12108] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12107] <... symlink resumed>) = 0 [pid 12106] <... fcntl resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./578/cgroup.cpu" [pid 12108] <... futex resumed>) = 1 [pid 12107] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12106] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12105] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12104] <... futex resumed>) = 0 [pid 5050] close(3 [pid 5046] <... unlink resumed>) = 0 [pid 12108] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12106] <... futex resumed>) = 1 [pid 12105] <... futex resumed>) = 0 [pid 12104] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12102] <... futex resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 12108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12107] <... symlink resumed>) = 0 [pid 12104] <... futex resumed>) = 0 [pid 12102] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12108] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12104] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12102] <... futex resumed>) = 0 [pid 12108] <... fcntl resumed>) = 0 [pid 12106] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12105] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12102] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] rmdir("./596" [pid 5046] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12108] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12104] <... futex resumed>) = 0 [pid 12108] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12104] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12104] <... futex resumed>) = 0 [pid 12108] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12104] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12108] <... openat resumed>) = 4 [pid 12107] <... openat resumed>) = 3 [pid 12106] <... openat resumed>) = 4 [pid 12105] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12104] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12108] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12107] write(3, "1000", 4 [pid 12105] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12107] <... write resumed>) = 4 [pid 12105] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./578/binderfs", [pid 12107] close(3 [pid 12105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] mkdir("./597", 0777 [pid 12107] <... close resumed>) = 0 [pid 12106] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12105] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12107] symlink("/dev/binderfs", "./binderfs" [pid 12102] <... futex resumed>) = ? [pid 12106] +++ killed by SIGIO +++ [pid 5046] unlink("./578/binderfs" [pid 12105] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... unlink resumed>) = 0 [pid 12105] <... mprotect resumed>) = 0 [pid 12105] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12107] <... symlink resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12108] +++ killed by SIGIO +++ [pid 12104] +++ killed by SIGIO +++ [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./578/cgroup", [pid 12105] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12107] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] unlink("./578/cgroup" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1168, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12107] <... futex resumed>) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... unlink resumed>) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 12107] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12105] <... clone3 resumed> => {parent_tid=[1198]}, 88) = 1198 [pid 5046] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12107] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12105] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12110 attached ./strace-static-x86_64: Process 12109 attached [pid 12107] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12105] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12102] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12110] set_robust_list(0x555556ac56a0, 24 [pid 12109] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12109] set_robust_list(0x7f504ff7f9a0, 24 [pid 12107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1176, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12110] <... set_robust_list resumed>) = 0 [pid 12109] <... set_robust_list resumed>) = 0 [pid 12105] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1198 [pid 5046] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 12110] chdir("./597" [pid 12109] rt_sigprocmask(SIG_SETMASK, [], [pid 12105] <... futex resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12109] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12105] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12110] <... chdir resumed>) = 0 [pid 12109] open(".", O_RDONLY [pid 12107] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] newfstatat(3, "", [pid 5046] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 12110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12109] <... open resumed>) = 3 [pid 12110] <... prctl resumed>) = 0 [pid 12107] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12110] setpgid(0, 0 [pid 12109] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12107] <... mprotect resumed>) = 0 [pid 12110] <... setpgid resumed>) = 0 [pid 12109] <... futex resumed>) = 1 [pid 5046] <... unlink resumed>) = 0 [pid 12110] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12105] <... futex resumed>) = 0 [pid 5049] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 12110] <... symlink resumed>) = 0 [pid 12109] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12107] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12105] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12110] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12109] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12105] <... futex resumed>) = 0 [pid 12110] <... symlink resumed>) = 0 [pid 12109] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12107] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./578/cgroup.net", [pid 12105] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12110] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12109] <... fcntl resumed>) = 0 [pid 12107] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] newfstatat(AT_FDCWD, "./583/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12110] <... symlink resumed>) = 0 [pid 12109] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12111 attached ) = 1 [pid 12105] <... futex resumed>) = 0 [pid 12111] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12109] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12105] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./578/cgroup.net" [pid 12111] <... rseq resumed>) = 0 [pid 12110] <... openat resumed>) = 3 [pid 12109] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12107] <... clone3 resumed> => {parent_tid=[1142]}, 88) = 1142 [pid 12105] <... futex resumed>) = 0 [pid 12111] set_robust_list(0x7f504ff7f9a0, 24 [pid 12110] write(3, "1000", 4 [pid 12109] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./583/cgroup.cpu" [pid 5046] <... unlink resumed>) = 0 [pid 12111] <... set_robust_list resumed>) = 0 [pid 12110] <... write resumed>) = 4 [pid 12107] rt_sigprocmask(SIG_SETMASK, [], [pid 12105] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 12111] rt_sigprocmask(SIG_SETMASK, [], [pid 12110] close(3 [pid 12109] <... openat resumed>) = 4 [pid 12107] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5047] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12111] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12110] <... close resumed>) = 0 [pid 12107] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12111] open(".", O_RDONLY [pid 12110] symlink("/dev/binderfs", "./binderfs" [pid 5049] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 12110] <... symlink resumed>) = 0 [pid 12109] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12107] <... futex resumed>) = 0 [pid 12105] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12111] <... open resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 12111] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12110] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12107] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./587/cgroup.cpu" [pid 12110] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12110] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... close resumed>) = 0 [pid 12109] +++ killed by SIGIO +++ [pid 12111] <... futex resumed>) = 0 [pid 12110] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12107] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12110] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./587/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12110] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] unlink("./587/binderfs" [pid 12111] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12107] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./583/binderfs", [pid 5046] rmdir("./578" [pid 12110] <... mprotect resumed>) = 0 [pid 12110] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12110] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12107] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./583/binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 12111] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12107] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12105] +++ killed by SIGIO +++ [pid 5049] newfstatat(AT_FDCWD, "./587/cgroup", [pid 5047] <... unlink resumed>) = 0 [pid 12111] <... fcntl resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1197, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12111] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./587/cgroup" [pid 12111] <... futex resumed>) = 1 [pid 12107] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 12112 attached [pid 12111] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12107] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./579", 0777 [pid 5051] umount2("./597", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12107] <... futex resumed>) = 0 [pid 12111] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12110] <... clone3 resumed> => {parent_tid=[1199]}, 88) = 1199 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12107] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12112] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12112] <... rseq resumed>) = 0 [pid 5049] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 12112] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... unlink resumed>) = 0 [pid 12112] <... set_robust_list resumed>) = 0 [pid 12112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12112] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12111] <... openat resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./583/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./587/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./587/cgroup.net" [pid 5046] <... mkdir resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./587" [pid 5051] <... openat resumed>) = 3 [pid 5047] unlink("./583/cgroup" [pid 12111] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12110] rt_sigprocmask(SIG_SETMASK, [], [pid 12107] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... rmdir resumed>) = 0 [pid 12110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] mkdir("./588", 0777 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12110] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12112] <... futex resumed>) = 0 [pid 12110] <... futex resumed>) = 1 [pid 5047] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12110] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12112] open(".", O_RDONLY [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", [pid 5051] getdents64(3, [pid 12112] <... open resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12112] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12110] <... futex resumed>) = 0 [pid 12112] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12110] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12110] <... futex resumed>) = 0 [pid 12112] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12110] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12112] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 12113 attached [pid 12112] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12110] <... futex resumed>) = 0 [pid 12113] set_robust_list(0x555556ac56a0, 24 [pid 12112] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12110] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12113] <... set_robust_list resumed>) = 0 [pid 12112] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12110] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1178 [pid 12113] chdir("./588" [pid 12112] <... openat resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 12113] <... chdir resumed>) = 0 [pid 12113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12113] setpgid(0, 0) = 0 [pid 12113] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12110] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12112] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12112] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 12113] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12114 attached [pid 12114] set_robust_list(0x555556ac56a0, 24 [pid 5047] <... unlink resumed>) = 0 [pid 12113] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12114] <... set_robust_list resumed>) = 0 [pid 5051] umount2("./597/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12114] chdir("./579" [pid 12113] <... symlink resumed>) = 0 [pid 12111] +++ killed by SIGIO +++ [pid 12107] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1160 [pid 5051] newfstatat(AT_FDCWD, "./597/cgroup.cpu", [pid 5047] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 12114] <... chdir resumed>) = 0 [pid 12113] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] unlink("./583/cgroup.net" [pid 12114] <... prctl resumed>) = 0 [pid 12113] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12114] setpgid(0, 0 [pid 5051] unlink("./597/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1141, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12114] <... setpgid resumed>) = 0 [pid 12113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12112] +++ killed by SIGIO +++ [pid 12110] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 12114] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1198, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./569", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12113] <... openat resumed>) = 3 [pid 5051] umount2("./597/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12114] <... symlink resumed>) = 0 [pid 12113] write(3, "1000", 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./597/binderfs", [pid 5047] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12113] <... write resumed>) = 4 [pid 12113] close(3 [pid 5045] <... openat resumed>) = 3 [pid 12114] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12113] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] rmdir("./583" [pid 12113] symlink("/dev/binderfs", "./binderfs" [pid 12114] <... symlink resumed>) = 0 [pid 5051] unlink("./597/binderfs" [pid 5050] umount2("./597", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12114] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12113] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 12113] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./597/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] mkdir("./584", 0777 [pid 12114] <... symlink resumed>) = 0 [pid 12113] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(3, "", [pid 12113] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] getdents64(3, [pid 12113] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12113] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] umount2("./569/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12114] <... openat resumed>) = 3 [pid 12113] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./569/cgroup.cpu", [pid 5047] <... mkdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./597/cgroup", [pid 5050] getdents64(3, [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12113] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12114] write(3, "1000", 4 [pid 12113] <... mprotect resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] unlink("./569/cgroup.cpu" [pid 12114] <... write resumed>) = 4 [pid 12113] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... unlink resumed>) = 0 [pid 5051] unlink("./597/cgroup" [pid 12113] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12113] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12114] close(3./strace-static-x86_64: Process 12115 attached ) = 0 [pid 12113] <... clone3 resumed> => {parent_tid=[1179]}, 88) = 1179 [pid 5045] umount2("./569/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12115] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12114] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 12116 attached [pid 12115] <... rseq resumed>) = 0 [pid 12113] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] umount2("./597/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12116] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... unlink resumed>) = 0 [pid 12116] <... set_robust_list resumed>) = 0 [pid 12115] set_robust_list(0x7f504ff7f9a0, 24 [pid 12114] <... symlink resumed>) = 0 [pid 12113] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./569/binderfs", [pid 12116] chdir("./584" [pid 12115] <... set_robust_list resumed>) = 0 [pid 12114] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12113] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./597/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12116] <... chdir resumed>) = 0 [pid 12115] rt_sigprocmask(SIG_SETMASK, [], [pid 12114] <... futex resumed>) = 0 [pid 12113] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./597/cgroup.cpu", [pid 5045] unlink("./569/binderfs" [pid 12116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12115] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12114] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12113] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12116] <... prctl resumed>) = 0 [pid 12115] open(".", O_RDONLY [pid 12114] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./597/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1170 [pid 5045] <... unlink resumed>) = 0 [pid 12116] setpgid(0, 0 [pid 12115] <... open resumed>) = 3 [pid 12114] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./597/cgroup.cpu" [pid 12116] <... setpgid resumed>) = 0 [pid 5051] unlink("./597/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./569/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12116] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12115] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12114] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 12115] <... futex resumed>) = 1 [pid 12114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12113] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./569/cgroup", [pid 12116] <... symlink resumed>) = 0 [pid 12115] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12114] <... mmap resumed>) = 0x7f504ff5f000 [pid 12113] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5051] umount2("./597/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./597/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12115] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12114] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12113] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12116] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12115] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12114] <... mprotect resumed>) = 0 [pid 12113] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./597/cgroup.net", [pid 5050] newfstatat(AT_FDCWD, "./597/binderfs", [pid 5045] unlink("./569/cgroup" [pid 12116] <... symlink resumed>) = 0 [pid 12115] <... fcntl resumed>) = 0 [pid 12114] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12116] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12115] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12115] <... futex resumed>) = 1 [pid 12113] <... futex resumed>) = 0 [pid 5045] umount2("./569/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12115] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12114] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12113] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./597/cgroup.net" [pid 5050] unlink("./597/binderfs" [pid 12116] <... symlink resumed>) = 0 [pid 12115] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12113] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12115] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12114] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12113] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./569/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 12117 attached [pid 12114] <... clone3 resumed> => {parent_tid=[1161]}, 88) = 1161 [pid 5050] umount2("./597/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12117] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12114] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12117] <... rseq resumed>) = 0 [pid 12114] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12117] set_robust_list(0x7f504ff7f9a0, 24 [pid 12114] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./597/cgroup", [pid 12117] <... set_robust_list resumed>) = 0 [pid 12115] <... openat resumed>) = 4 [pid 12114] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./569/blkio.bfq.io_wait_time_recursive" [pid 12117] rt_sigprocmask(SIG_SETMASK, [], [pid 12114] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12117] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12117] open(".", O_RDONLY [pid 12116] <... openat resumed>) = 3 [pid 12115] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12113] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12117] <... open resumed>) = 3 [pid 5051] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 12116] write(3, "1000", 4 [pid 5045] umount2("./569/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12116] <... write resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] unlink("./597/cgroup" [pid 12116] close(3 [pid 12117] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12117] <... futex resumed>) = 1 [pid 12114] <... futex resumed>) = 0 [pid 12117] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12114] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12117] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12114] <... futex resumed>) = 0 [pid 12117] <... fcntl resumed>) = 0 [pid 5050] umount2("./597/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12117] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12114] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] close(3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./569/cgroup.net", [pid 12117] <... futex resumed>) = 0 [pid 12114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./597/blkio.bfq.io_wait_time_recursive", [pid 5051] <... close resumed>) = 0 [pid 12117] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12116] <... close resumed>) = 0 [pid 12114] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./597" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12116] symlink("/dev/binderfs", "./binderfs" [pid 12114] <... futex resumed>) = 0 [pid 12117] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12114] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./597/blkio.bfq.io_wait_time_recursive" [pid 5045] unlink("./569/cgroup.net" [pid 12117] <... openat resumed>) = 4 [pid 12116] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12114] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12114] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./597/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./597/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12116] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12115] +++ killed by SIGIO +++ [pid 12113] +++ killed by SIGIO +++ [pid 5051] mkdir("./598", 0777 [pid 5050] unlink("./597/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 12116] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1178, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] getdents64(3, [pid 12117] +++ killed by SIGIO +++ [pid 12116] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12114] +++ killed by SIGIO +++ [pid 5050] getdents64(3, [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12116] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] close(3 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1160, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] close(3 [pid 12116] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 12116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] rmdir("./597" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] rmdir("./569" [pid 12116] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12116] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... rmdir resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... rmdir resumed>) = 0 [pid 12116] <... mprotect resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] mkdir("./570", 0777 [pid 12116] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... openat resumed>) = 3 [pid 5046] newfstatat(3, "", [pid 5045] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, [pid 12116] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] mkdir("./598", 0777 [pid 5049] newfstatat(3, "", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./579/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12118 attached [pid 12118] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12118] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 12119 attached [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1199 [pid 5049] getdents64(3, [pid 5046] unlink("./579/cgroup.cpu" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12119] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12118] chdir("./598" [pid 12116] <... clone3 resumed> => {parent_tid=[1171]}, 88) = 1171 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12119] <... rseq resumed>) = 0 [pid 12119] set_robust_list(0x7f504ff7f9a0, 24 [pid 12118] <... chdir resumed>) = 0 [pid 12116] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... mkdir resumed>) = 0 [pid 5049] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12119] <... set_robust_list resumed>) = 0 [pid 12118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12116] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./588/cgroup.cpu", [pid 12119] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12116] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12120 attached [pid 12119] open(".", O_RDONLY [pid 12118] <... prctl resumed>) = 0 [pid 12116] <... futex resumed>) = 0 [pid 5049] unlink("./588/cgroup.cpu" [pid 5046] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12116] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12118] setpgid(0, 0) = 0 [pid 12119] <... open resumed>) = 3 [pid 12118] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./579/binderfs", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1143 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12119] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12121 attached [pid 5049] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12120] set_robust_list(0x555556ac56a0, 24 [pid 12119] <... futex resumed>) = 1 [pid 12118] <... symlink resumed>) = 0 [pid 12116] <... futex resumed>) = 0 [pid 5046] unlink("./579/binderfs" [pid 12120] <... set_robust_list resumed>) = 0 [pid 12119] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12118] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12116] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12121] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1200 [pid 12118] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./579/cgroup", [pid 12121] <... set_robust_list resumed>) = 0 [pid 12120] chdir("./570" [pid 12119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12118] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12116] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./588/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12119] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12116] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12120] <... chdir resumed>) = 0 [pid 12119] <... fcntl resumed>) = 0 [pid 12118] <... symlink resumed>) = 0 [pid 5049] unlink("./588/binderfs" [pid 5046] unlink("./579/cgroup" [pid 12121] chdir("./598" [pid 12119] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12121] <... chdir resumed>) = 0 [pid 12120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12119] <... futex resumed>) = 1 [pid 12118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12116] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12120] <... prctl resumed>) = 0 [pid 12119] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12118] <... openat resumed>) = 3 [pid 12116] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 12121] <... prctl resumed>) = 0 [pid 12120] setpgid(0, 0 [pid 12119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12116] <... futex resumed>) = 0 [pid 5046] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12121] setpgid(0, 0 [pid 12120] <... setpgid resumed>) = 0 [pid 12119] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12118] write(3, "1000", 4 [pid 12116] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12121] <... setpgid resumed>) = 0 [pid 12120] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12118] <... write resumed>) = 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12119] <... openat resumed>) = 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./588/cgroup", [pid 12121] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12118] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./579/blkio.bfq.io_wait_time_recursive" [pid 12121] <... symlink resumed>) = 0 [pid 12120] <... symlink resumed>) = 0 [pid 12119] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12118] <... close resumed>) = 0 [pid 12116] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] unlink("./588/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 12120] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5046] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./579/cgroup.net", [pid 12120] <... symlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./579/cgroup.net") = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 5049] <... unlink resumed>) = 0 [pid 12120] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./579" [pid 5049] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12121] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12120] <... symlink resumed>) = 0 [pid 12118] symlink("/dev/binderfs", "./binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 5046] mkdir("./580", 0777 [pid 12118] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12121] <... symlink resumed>) = 0 [pid 5049] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 12120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12120] <... openat resumed>) = 3 [pid 12121] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12118] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12120] write(3, "1000", 4 [pid 12119] +++ killed by SIGIO +++ [pid 12118] <... futex resumed>) = 0 [pid 12116] +++ killed by SIGIO +++ [pid 12121] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./588/cgroup.net", [pid 12120] <... write resumed>) = 4 [pid 12120] close(3 [pid 12118] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12120] <... close resumed>) = 0 [pid 12118] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] unlink("./588/cgroup.net"./strace-static-x86_64: Process 12122 attached [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1162 [pid 12122] set_robust_list(0x555556ac56a0, 24 [pid 12121] <... openat resumed>) = 3 [pid 12122] <... set_robust_list resumed>) = 0 [pid 12122] chdir("./580" [pid 12121] write(3, "1000", 4 [pid 12120] symlink("/dev/binderfs", "./binderfs" [pid 12118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... unlink resumed>) = 0 [pid 12118] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] getdents64(3, [pid 12118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12122] <... chdir resumed>) = 0 [pid 12118] <... mmap resumed>) = 0x7f504ff5f000 [pid 12122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12121] <... write resumed>) = 4 [pid 12118] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] close(3 [pid 12122] <... prctl resumed>) = 0 [pid 12122] setpgid(0, 0 [pid 12118] <... mprotect resumed>) = 0 [pid 12122] <... setpgid resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 12122] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12118] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] rmdir("./588" [pid 12122] <... symlink resumed>) = 0 [pid 12121] close(3 [pid 12120] <... symlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1170, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12121] <... close resumed>) = 0 [pid 12122] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12121] symlink("/dev/binderfs", "./binderfs" [pid 12118] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12122] <... symlink resumed>) = 0 [pid 12121] <... symlink resumed>) = 0 [pid 12120] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12122] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12120] <... futex resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12121] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12118] <... clone3 resumed> => {parent_tid=[1200]}, 88) = 1200 [pid 12121] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12123 attached [pid 12123] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12121] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12120] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12118] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] newfstatat(3, "", [pid 12121] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12120] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12118] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] mkdir("./589", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12121] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12120] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12118] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12121] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12120] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12118] <... futex resumed>) = 0 [pid 12121] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12123] set_robust_list(0x7f504ff7f9a0, 24 [pid 12122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12123] <... set_robust_list resumed>) = 0 [pid 12122] <... openat resumed>) = 3 [pid 12121] <... mmap resumed>) = 0x7f504ff5f000 [pid 12120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12118] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12123] rt_sigprocmask(SIG_SETMASK, [], [pid 12122] write(3, "1000", 4 [pid 12121] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12120] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] getdents64(3, [pid 12123] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12122] <... write resumed>) = 4 [pid 12121] <... mprotect resumed>) = 0 [pid 12123] open(".", O_RDONLY [pid 12122] close(3 [pid 12123] <... open resumed>) = 3 [pid 12120] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12121] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12122] <... close resumed>) = 0 [pid 12120] <... mprotect resumed>) = 0 [pid 12123] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12122] symlink("/dev/binderfs", "./binderfs" [pid 12123] <... futex resumed>) = 1 [pid 12122] <... symlink resumed>) = 0 [pid 12123] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12122] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12122] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12121] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12121] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12120] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./584/cgroup.cpu", [pid 12122] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12125 attached [pid 12125] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12122] <... mprotect resumed>) = 0 [pid 12118] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12125] <... rseq resumed>) = 0 [pid 12122] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12120] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12118] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./584/cgroup.cpu"./strace-static-x86_64: Process 12124 attached [pid 12125] set_robust_list(0x7f504ff7f9a0, 24 [pid 12121] <... clone3 resumed> => {parent_tid=[1201]}, 88) = 1201 [pid 12120] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12118] <... futex resumed>) = 1 [pid 12125] <... set_robust_list resumed>) = 0 [pid 12123] <... futex resumed>) = 0 [pid 12122] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 12126 attached [pid 12125] rt_sigprocmask(SIG_SETMASK, [], [pid 12123] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12118] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12127 attached [pid 12126] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12125] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12124] set_robust_list(0x555556ac56a0, 24 [pid 12123] <... fcntl resumed>) = 0 [pid 12121] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1180 [pid 5047] <... unlink resumed>) = 0 [pid 12127] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12126] <... rseq resumed>) = 0 [pid 12125] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12124] <... set_robust_list resumed>) = 0 [pid 12123] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12121] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12120] <... clone3 resumed> => {parent_tid=[1144]}, 88) = 1144 [pid 5047] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12127] <... rseq resumed>) = 0 [pid 12126] set_robust_list(0x7f504ff7f9a0, 24 [pid 12123] <... futex resumed>) = 1 [pid 12122] <... clone3 resumed> => {parent_tid=[1163]}, 88) = 1163 [pid 12121] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12118] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12127] set_robust_list(0x7f504ff7f9a0, 24 [pid 12126] <... set_robust_list resumed>) = 0 [pid 12124] chdir("./589" [pid 12125] <... futex resumed>) = 0 [pid 12123] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12122] rt_sigprocmask(SIG_SETMASK, [], [pid 12121] <... futex resumed>) = 1 [pid 12120] rt_sigprocmask(SIG_SETMASK, [], [pid 12118] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./584/binderfs", [pid 12127] <... set_robust_list resumed>) = 0 [pid 12126] rt_sigprocmask(SIG_SETMASK, [], [pid 12125] open(".", O_RDONLY [pid 12124] <... chdir resumed>) = 0 [pid 12123] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12122] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12121] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12120] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12118] <... futex resumed>) = 0 [pid 12127] rt_sigprocmask(SIG_SETMASK, [], [pid 12126] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12125] <... open resumed>) = 3 [pid 12124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12123] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12122] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12120] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12118] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12127] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12126] open(".", O_RDONLY [pid 12124] <... prctl resumed>) = 0 [pid 12123] <... openat resumed>) = 4 [pid 12122] <... futex resumed>) = 0 [pid 12125] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12126] <... open resumed>) = 3 [pid 12126] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12125] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12122] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12124] setpgid(0, 0 [pid 5047] unlink("./584/binderfs" [pid 12124] <... setpgid resumed>) = 0 [pid 12121] <... futex resumed>) = 0 [pid 12118] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12126] <... futex resumed>) = 0 [pid 12126] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12124] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12118] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... unlink resumed>) = 0 [pid 12121] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12125] <... futex resumed>) = 0 [pid 12121] <... futex resumed>) = 1 [pid 12125] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12125] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12125] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12127] open(".", O_RDONLY [pid 12124] <... symlink resumed>) = 0 [pid 12126] <... futex resumed>) = 0 [pid 12121] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12120] <... futex resumed>) = 1 [pid 5047] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12126] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./584/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12127] <... open resumed>) = 3 [pid 12124] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12123] +++ killed by SIGIO +++ [pid 12121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12120] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12118] +++ killed by SIGIO +++ [pid 5047] unlink("./584/cgroup" [pid 12127] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12121] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12125] <... futex resumed>) = 0 [pid 12124] <... symlink resumed>) = 0 [pid 12121] <... futex resumed>) = 1 [pid 12120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1199, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12127] <... futex resumed>) = 1 [pid 12125] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12124] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12122] <... futex resumed>) = 0 [pid 12121] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12120] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 12127] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12126] <... futex resumed>) = 0 [pid 12124] <... symlink resumed>) = 0 [pid 12120] <... futex resumed>) = 1 [pid 12126] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12122] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12120] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12126] <... fcntl resumed>) = 0 [pid 12126] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12122] <... futex resumed>) = 0 [pid 12126] <... futex resumed>) = 1 [pid 12122] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12120] <... futex resumed>) = 0 [pid 5051] umount2("./598", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12126] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12120] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12126] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12126] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12120] <... futex resumed>) = 0 [pid 12125] <... openat resumed>) = 4 [pid 5051] openat(AT_FDCWD, "./598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12127] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12127] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12126] <... openat resumed>) = 4 [pid 12124] <... openat resumed>) = 3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12127] <... fcntl resumed>) = 0 [pid 12126] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12125] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12124] write(3, "1000", 4 [pid 12120] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 12127] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12124] <... write resumed>) = 4 [pid 12121] <... futex resumed>) = ? [pid 5051] newfstatat(3, "", [pid 12126] <... futex resumed>) = ? [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12127] <... futex resumed>) = 1 [pid 12125] +++ killed by SIGIO +++ [pid 12124] close(3 [pid 12122] <... futex resumed>) = 0 [pid 12121] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] unlink("./584/blkio.bfq.io_wait_time_recursive" [pid 12127] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12124] <... close resumed>) = 0 [pid 12122] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 12127] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12124] symlink("/dev/binderfs", "./binderfs" [pid 12122] <... futex resumed>) = 0 [pid 12127] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12124] <... symlink resumed>) = 0 [pid 12122] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12127] <... openat resumed>) = 4 [pid 5051] getdents64(3, [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1200, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12124] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12124] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 12124] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12127] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12124] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12122] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12124] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12127] +++ killed by SIGIO +++ [pid 12124] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./584/cgroup.net" [pid 12124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 12124] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12126] +++ killed by SIGIO +++ [pid 12124] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12120] +++ killed by SIGIO +++ [pid 5051] umount2("./598/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 12124] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12124] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12124] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./598/cgroup.cpu", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12128 attached [pid 12124] <... clone3 resumed> => {parent_tid=[1181]}, 88) = 1181 [pid 12128] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12124] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./598/cgroup.cpu" [pid 5047] close(3 [pid 12128] <... rseq resumed>) = 0 [pid 12128] set_robust_list(0x7f504ff7f9a0, 24 [pid 12124] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12128] <... set_robust_list resumed>) = 0 [pid 12124] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12128] rt_sigprocmask(SIG_SETMASK, [], [pid 12124] <... futex resumed>) = 0 [pid 12128] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12124] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./598", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12128] open(".", O_RDONLY [pid 5047] <... close resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1143, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12128] <... open resumed>) = 3 [pid 12128] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12124] <... futex resumed>) = 0 [pid 12128] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12124] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12128] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12124] <... futex resumed>) = 0 [pid 12128] <... fcntl resumed>) = 0 [pid 12124] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12128] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12124] <... futex resumed>) = 0 [pid 12128] <... futex resumed>) = 1 [pid 12124] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12128] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 12124] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12124] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12122] +++ killed by SIGIO +++ [pid 5047] rmdir("./584" [pid 5050] openat(AT_FDCWD, "./598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./570", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./598/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1162, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] openat(AT_FDCWD, "./570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12128] +++ killed by SIGIO +++ [pid 12124] +++ killed by SIGIO +++ [pid 5051] newfstatat(AT_FDCWD, "./598/binderfs", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5047] mkdir("./585", 0777 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1180, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... mkdir resumed>) = 0 [pid 5045] newfstatat(3, "", [pid 5049] <... restart_syscall resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 5050] umount2("./598/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] unlink("./598/binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... openat resumed>) = 3 [pid 5045] umount2("./570/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./598/cgroup.cpu", [pid 5046] newfstatat(3, "", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 12129 attached [pid 5049] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] getdents64(3, [pid 5050] unlink("./598/cgroup.cpu" [pid 5049] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12129] set_robust_list(0x555556ac56a0, 24 [pid 5045] newfstatat(AT_FDCWD, "./570/cgroup.cpu", [pid 5051] umount2("./598/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1172 [pid 12129] <... set_robust_list resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./598/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./570/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] chdir("./585" [pid 5051] newfstatat(AT_FDCWD, "./598/cgroup", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 5049] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./598/binderfs", [pid 12129] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] unlink("./598/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./580/cgroup.cpu", [pid 5045] umount2("./570/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12129] <... prctl resumed>) = 0 [pid 5051] unlink("./598/cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] setpgid(0, 0) = 0 [pid 5045] newfstatat(AT_FDCWD, "./570/binderfs", [pid 12129] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] umount2("./598/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./580/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] <... symlink resumed>) = 0 [pid 5051] umount2("./598/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./598/cgroup", [pid 5049] unlink("./589/cgroup.cpu" [pid 5045] unlink("./570/binderfs" [pid 12129] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] unlink("./598/cgroup") = 0 [pid 5049] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./570/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12129] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./598/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./589/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./570/cgroup", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./598/blkio.bfq.io_wait_time_recursive", [pid 5049] unlink("./589/binderfs" [pid 5051] newfstatat(AT_FDCWD, "./598/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./570/cgroup" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./580/binderfs", [pid 5045] <... unlink resumed>) = 0 [pid 5051] unlink("./598/blkio.bfq.io_wait_time_recursive" [pid 5050] unlink("./598/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] unlink("./580/binderfs" [pid 5051] umount2("./598/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./570/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./598/cgroup.net", [pid 5050] umount2("./598/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./589/cgroup", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12129] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./598/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./598/cgroup.net", [pid 5049] unlink("./589/cgroup" [pid 5045] newfstatat(AT_FDCWD, "./570/blkio.bfq.io_wait_time_recursive", [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] getdents64(3, [pid 5046] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./598/cgroup.net" [pid 12129] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] close(3 [pid 5046] newfstatat(AT_FDCWD, "./580/cgroup", [pid 5050] getdents64(3, [pid 5049] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./570/blkio.bfq.io_wait_time_recursive" [pid 12129] <... openat resumed>) = 3 [pid 5051] <... close resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 5049] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./580/cgroup" [pid 5050] <... close resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./570/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./589/blkio.bfq.io_wait_time_recursive") = 0 [pid 5050] rmdir("./598" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./570/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5045] unlink("./570/cgroup.net" [pid 5049] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] rmdir("./598" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 5049] unlink("./589/cgroup.net" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12129] write(3, "1000", 4 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] mkdir("./599", 0777 [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12129] <... write resumed>) = 4 [pid 5051] mkdir("./599", 0777 [pid 12129] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12129] <... close resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 5045] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12129] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... close resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] rmdir("./570" [pid 12129] <... symlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] close(3 [pid 5046] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 5045] <... rmdir resumed>) = 0 [pid 5045] mkdir("./571", 0777 [pid 12129] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... mkdir resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12129] <... futex resumed>) = 0 [pid 12129] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... unlink resumed>) = 0 [pid 12129] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12131 attached ./strace-static-x86_64: Process 12130 attached [pid 12129] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1202 [pid 5049] <... close resumed>) = 0 [pid 5046] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12132 attached [pid 12129] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12132] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1201 [pid 12132] <... set_robust_list resumed>) = 0 [pid 12132] chdir("./599" [pid 12129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] rmdir("./589" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12132] <... chdir resumed>) = 0 [pid 12129] <... mmap resumed>) = 0x7f504ff5f000 [pid 12132] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 12132] <... prctl resumed>) = 0 [pid 12132] setpgid(0, 0 [pid 12129] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12132] <... setpgid resumed>) = 0 [pid 12132] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12129] <... mprotect resumed>) = 0 [pid 5046] unlink("./580/cgroup.net" [pid 12129] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12132] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12129] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12131] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1145 [pid 12132] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12130] set_robust_list(0x555556ac56a0, 24 [pid 12129] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... rmdir resumed>) = 0 [pid 5046] getdents64(3, [pid 12131] <... set_robust_list resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12131] chdir("./571" [pid 5046] close(3./strace-static-x86_64: Process 12133 attached [pid 12130] <... set_robust_list resumed>) = 0 [pid 5049] mkdir("./590", 0777 [pid 5046] <... close resumed>) = 0 [pid 12133] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12132] <... symlink resumed>) = 0 [pid 12131] <... chdir resumed>) = 0 [pid 12133] <... rseq resumed>) = 0 [pid 12133] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12130] chdir("./599" [pid 5046] rmdir("./580" [pid 12129] <... clone3 resumed> => {parent_tid=[1173]}, 88) = 1173 [pid 12133] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12132] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12131] <... prctl resumed>) = 0 [pid 12130] <... chdir resumed>) = 0 [pid 12129] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12132] <... symlink resumed>) = 0 [pid 12130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12129] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12131] setpgid(0, 0 [pid 12130] <... prctl resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 12131] <... setpgid resumed>) = 0 [pid 12131] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12131] <... symlink resumed>) = 0 [pid 12130] setpgid(0, 0 [pid 12129] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] mkdir("./581", 0777 [pid 12130] <... setpgid resumed>) = 0 [pid 12129] <... futex resumed>) = 1 [pid 12133] <... futex resumed>) = 0 [pid 12132] <... openat resumed>) = 3 [pid 12131] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12133] open(".", O_RDONLY [pid 12131] <... symlink resumed>) = 0 [pid 12130] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12133] <... open resumed>) = 3 [pid 12129] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... mkdir resumed>) = 0 [pid 12133] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12131] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12130] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12134 attached [pid 12133] <... futex resumed>) = 1 [pid 12133] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12132] write(3, "1000", 4 [pid 12130] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1182 [pid 12134] set_robust_list(0x555556ac56a0, 24 [pid 12132] <... write resumed>) = 4 [pid 12129] <... futex resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12134] <... set_robust_list resumed>) = 0 [pid 12132] close(3 [pid 12131] <... symlink resumed>) = 0 [pid 12129] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12134] chdir("./590" [pid 12133] <... futex resumed>) = 0 [pid 12131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12129] <... futex resumed>) = 1 [pid 12134] <... chdir resumed>) = 0 [pid 12133] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12131] <... openat resumed>) = 3 [pid 12129] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12133] <... fcntl resumed>) = 0 [pid 12133] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12129] <... futex resumed>) = 0 [pid 12134] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12133] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12132] <... close resumed>) = 0 [pid 12131] write(3, "1000", 4 [pid 12129] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12131] <... write resumed>) = 4 [pid 12129] <... futex resumed>) = 0 [pid 12133] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12131] close(3 [pid 12129] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12134] <... prctl resumed>) = 0 [pid 12132] symlink("/dev/binderfs", "./binderfs" [pid 12130] <... symlink resumed>) = 0 [pid 12130] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12133] <... openat resumed>) = 4 [pid 12129] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12131] <... close resumed>) = 0 [pid 12133] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12129] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12131] symlink("/dev/binderfs", "./binderfs" [pid 12133] <... futex resumed>) = ? [pid 12134] setpgid(0, 0) = 0 [pid 12134] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12131] <... symlink resumed>) = 0 [pid 12134] <... symlink resumed>) = 0 [pid 12132] <... symlink resumed>) = 0 [pid 12130] <... symlink resumed>) = 0 [pid 12131] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12132] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12131] <... futex resumed>) = 0 [pid 12130] <... openat resumed>) = 3 [pid 12132] <... futex resumed>) = 0 [pid 12131] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12131] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12134] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12132] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12130] write(3, "1000", 4./strace-static-x86_64: Process 12135 attached [pid 12134] <... symlink resumed>) = 0 [pid 12132] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12132] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12131] <... mmap resumed>) = 0x7f504ff5f000 [pid 12130] <... write resumed>) = 4 [pid 12135] set_robust_list(0x555556ac56a0, 24 [pid 12134] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12133] +++ killed by SIGIO +++ [pid 12132] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12131] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12130] close(3 [pid 12129] +++ killed by SIGIO +++ [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1164 [pid 12135] <... set_robust_list resumed>) = 0 [pid 12131] <... mprotect resumed>) = 0 [pid 12134] <... symlink resumed>) = 0 [pid 12132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12131] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12130] <... close resumed>) = 0 [pid 12135] chdir("./581" [pid 12134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12132] <... mmap resumed>) = 0x7f504ff5f000 [pid 12130] symlink("/dev/binderfs", "./binderfs" [pid 12135] <... chdir resumed>) = 0 [pid 12132] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12131] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12131] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12135] <... prctl resumed>) = 0 [pid 12132] <... mprotect resumed>) = 0 [pid 12130] <... symlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1172, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 12136 attached [pid 12135] setpgid(0, 0 [pid 12131] <... clone3 resumed> => {parent_tid=[1146]}, 88) = 1146 [pid 12136] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12135] <... setpgid resumed>) = 0 [pid 12131] rt_sigprocmask(SIG_SETMASK, [], [pid 12136] <... rseq resumed>) = 0 [pid 12135] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12131] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12136] set_robust_list(0x7f504ff7f9a0, 24 [pid 12131] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12136] <... set_robust_list resumed>) = 0 [pid 12135] <... symlink resumed>) = 0 [pid 12131] <... futex resumed>) = 0 [pid 12136] rt_sigprocmask(SIG_SETMASK, [], [pid 12130] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12136] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12131] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12136] open(".", O_RDONLY [pid 12134] <... openat resumed>) = 3 [pid 12130] <... futex resumed>) = 0 [pid 12136] <... open resumed>) = 3 [pid 12135] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12134] write(3, "1000", 4 [pid 12132] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12130] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12136] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12135] <... symlink resumed>) = 0 [pid 12134] <... write resumed>) = 4 [pid 12132] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12130] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12136] <... futex resumed>) = 1 [pid 12135] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12134] close(3 [pid 12132] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12131] <... futex resumed>) = 0 [pid 12130] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12136] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12135] <... symlink resumed>) = 0 [pid 12131] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12130] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12131] <... futex resumed>) = 0 [pid 12136] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12131] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] newfstatat(3, "", ./strace-static-x86_64: Process 12137 attached [pid 12136] <... fcntl resumed>) = 0 [pid 12135] <... openat resumed>) = 3 [pid 12134] <... close resumed>) = 0 [pid 12130] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12137] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12136] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12134] symlink("/dev/binderfs", "./binderfs" [pid 12130] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] getdents64(3, [pid 12137] <... rseq resumed>) = 0 [pid 12136] <... futex resumed>) = 1 [pid 12135] write(3, "1000", 4 [pid 12131] <... futex resumed>) = 0 [pid 12137] set_robust_list(0x7f504ff7f9a0, 24 [pid 12136] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12135] <... write resumed>) = 4 [pid 12131] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12137] <... set_robust_list resumed>) = 0 [pid 12136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12135] close(3 [pid 12134] <... symlink resumed>) = 0 [pid 12131] <... futex resumed>) = 0 [pid 12137] rt_sigprocmask(SIG_SETMASK, [], [pid 12136] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12135] <... close resumed>) = 0 [pid 12131] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12130] <... mprotect resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12137] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12136] <... openat resumed>) = 4 [pid 12135] symlink("/dev/binderfs", "./binderfs" [pid 12134] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12132] <... clone3 resumed> => {parent_tid=[1202]}, 88) = 1202 [pid 12131] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12130] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12137] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12136] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12135] <... symlink resumed>) = 0 [pid 12134] <... futex resumed>) = 0 [pid 12132] rt_sigprocmask(SIG_SETMASK, [], [pid 12131] rt_sigprocmask(SIG_SETMASK, [], [pid 12134] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12135] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12134] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 12135] <... futex resumed>) = 0 [pid 12134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12132] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12130] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12134] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12132] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12132] <... futex resumed>) = 1 [pid 12130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] unlink("./585/cgroup.cpu" [pid 12134] <... mmap resumed>) = 0x7f504ff5f000 [pid 12132] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12134] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12135] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12134] <... mprotect resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12137] <... futex resumed>) = 0 [pid 12135] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12134] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12135] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 12138 attached [pid 12130] <... clone3 resumed> => {parent_tid=[1203]}, 88) = 1203 [pid 5047] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12135] <... mmap resumed>) = 0x7f504ff5f000 [pid 12138] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12137] open(".", O_RDONLY [pid 12134] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12130] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12138] <... rseq resumed>) = 0 [pid 12134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12130] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./585/binderfs", [pid 12138] set_robust_list(0x7f504ff7f9a0, 24 [pid 12135] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12130] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12135] <... mprotect resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12138] <... set_robust_list resumed>) = 0 [pid 12138] rt_sigprocmask(SIG_SETMASK, [], [pid 12137] <... open resumed>) = 3 [pid 12130] <... futex resumed>) = 0 [pid 5047] unlink("./585/binderfs"./strace-static-x86_64: Process 12139 attached [pid 12138] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12137] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12130] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12139] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12138] open(".", O_RDONLY [pid 12137] <... futex resumed>) = 1 [pid 12135] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12134] <... clone3 resumed> => {parent_tid=[1183]}, 88) = 1183 [pid 12132] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12139] set_robust_list(0x7f504ff7f9a0, 24 [pid 12138] <... open resumed>) = 3 [pid 12137] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12136] +++ killed by SIGIO +++ [pid 12135] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12134] rt_sigprocmask(SIG_SETMASK, [], [pid 12132] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12131] +++ killed by SIGIO +++ [pid 5047] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12139] <... set_robust_list resumed>) = 0 [pid 12138] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12137] <... fcntl resumed>) = 0 [pid 12135] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12134] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12132] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12139] rt_sigprocmask(SIG_SETMASK, [], [pid 12138] <... futex resumed>) = 1 [pid 12134] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12132] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12130] <... futex resumed>) = 0 [pid 12139] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12140 attached [pid 12139] open(".", O_RDONLY [pid 12138] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12137] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12135] <... clone3 resumed> => {parent_tid=[1165]}, 88) = 1165 [pid 12134] <... futex resumed>) = 0 [pid 12130] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./585/cgroup", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1145, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12140] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12139] <... open resumed>) = 3 [pid 12138] <... fcntl resumed>) = 0 [pid 12137] <... futex resumed>) = 1 [pid 12135] rt_sigprocmask(SIG_SETMASK, [], [pid 12134] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12132] <... futex resumed>) = 0 [pid 12130] <... futex resumed>) = 0 [pid 5045] umount2("./571", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12140] <... rseq resumed>) = 0 [pid 12139] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12137] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12135] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12140] set_robust_list(0x7f504ff7f9a0, 24 [pid 12139] <... futex resumed>) = 0 [pid 12135] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12140] <... set_robust_list resumed>) = 0 [pid 12139] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12135] <... futex resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12140] rt_sigprocmask(SIG_SETMASK, [], [pid 12135] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... openat resumed>) = 3 [pid 12140] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12140] open(".", O_RDONLY [pid 12138] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12132] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12130] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(3, "", [pid 12140] <... open resumed>) = 3 [pid 12138] <... futex resumed>) = 0 [pid 12134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12132] <... futex resumed>) = 1 [pid 12130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12140] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12138] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12137] <... futex resumed>) = 0 [pid 12134] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12132] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12130] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./585/cgroup" [pid 12140] <... futex resumed>) = 1 [pid 12138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12137] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12135] <... futex resumed>) = 0 [pid 5045] getdents64(3, [pid 12140] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12138] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12137] <... openat resumed>) = 4 [pid 12134] <... futex resumed>) = 1 [pid 12130] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12140] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12135] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12134] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12130] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12140] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12135] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12140] <... fcntl resumed>) = 0 [pid 12139] <... futex resumed>) = 0 [pid 12135] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12140] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12139] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12137] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12135] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./571/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12140] <... futex resumed>) = 0 [pid 12139] <... fcntl resumed>) = 0 [pid 12138] <... openat resumed>) = 4 [pid 12135] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12132] <... futex resumed>) = ? [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12140] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12139] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12137] +++ killed by SIGIO +++ [pid 12135] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./571/cgroup.cpu", [pid 12140] <... openat resumed>) = 4 [pid 12139] <... futex resumed>) = 1 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./571/cgroup.cpu" [pid 12139] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] <... unlink resumed>) = 0 [pid 12135] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12140] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12138] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12134] <... futex resumed>) = 0 [pid 12132] +++ killed by SIGIO +++ [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./571/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12140] <... futex resumed>) = ? [pid 12134] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12130] <... futex resumed>) = ? [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1201, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12140] +++ killed by SIGIO +++ [pid 12139] <... futex resumed>) = 0 [pid 12138] +++ killed by SIGIO +++ [pid 12134] <... futex resumed>) = 1 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./599", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12139] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12134] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./571/binderfs", [pid 5051] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./585/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./571/binderfs" [pid 12139] <... openat resumed>) = 4 [pid 12134] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] unlink("./585/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 12139] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12134] restart_syscall(<... resuming interrupted futex ...> [pid 12130] +++ killed by SIGIO +++ [pid 5047] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1202, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5045] umount2("./571/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./571/cgroup", [pid 5050] umount2("./599", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 5045] unlink("./571/cgroup" [pid 5051] umount2("./599/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5047] close(3 [pid 5045] umount2("./571/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./599/cgroup.cpu", [pid 5050] newfstatat(3, "", [pid 5047] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12139] +++ killed by SIGIO +++ [pid 12134] +++ killed by SIGIO +++ [pid 5050] getdents64(3, [pid 5047] rmdir("./585" [pid 5045] newfstatat(AT_FDCWD, "./571/blkio.bfq.io_wait_time_recursive", [pid 5051] unlink("./599/cgroup.cpu" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] <... unlink resumed>) = 0 [pid 5051] umount2("./599/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./599/binderfs", [pid 12135] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1182, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./599/binderfs") = 0 [pid 5050] umount2("./599/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./571/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./599/cgroup.cpu", [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./599/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./599/cgroup.cpu" [pid 5051] newfstatat(AT_FDCWD, "./599/cgroup", [pid 5050] <... unlink resumed>) = 0 [pid 5045] umount2("./571/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] mkdir("./586", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./599/cgroup" [pid 5050] umount2("./599/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1164, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] newfstatat(AT_FDCWD, "./571/cgroup.net", [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./599/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./571/cgroup.net" [pid 5051] umount2("./599/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./599/binderfs") = 0 [pid 5051] newfstatat(AT_FDCWD, "./599/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 5051] unlink("./599/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./599/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./599/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./599/cgroup", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./599/cgroup" [pid 5049] <... openat resumed>) = 3 [pid 5045] rmdir("./571"./strace-static-x86_64: Process 12141 attached [pid 5051] newfstatat(AT_FDCWD, "./599/cgroup.net", [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5046] <... openat resumed>) = 3 [pid 5045] <... rmdir resumed>) = 0 [pid 12141] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1174 [pid 5046] newfstatat(3, "", [pid 12141] <... set_robust_list resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./599/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] unlink("./599/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] mkdir("./572", 0777 [pid 12141] chdir("./586" [pid 5050] newfstatat(AT_FDCWD, "./599/blkio.bfq.io_wait_time_recursive", [pid 5046] getdents64(3, [pid 12141] <... chdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12141] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] unlink("./599/blkio.bfq.io_wait_time_recursive" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12141] <... prctl resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./590/cgroup.cpu", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12141] setpgid(0, 0 [pid 5046] newfstatat(AT_FDCWD, "./581/cgroup.cpu", [pid 12141] <... setpgid resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12141] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5046] unlink("./581/cgroup.cpu" [pid 12141] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./590/cgroup.cpu" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] umount2("./599/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./599/cgroup.net", [pid 5051] close(3 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12141] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12141] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] rmdir("./599" [pid 5050] unlink("./599/cgroup.net" [pid 12141] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12141] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./581/binderfs", [pid 5051] <... rmdir resumed>) = 0 [pid 5050] getdents64(3, [pid 5049] newfstatat(AT_FDCWD, "./590/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./590/binderfs" [pid 5046] unlink("./581/binderfs"./strace-static-x86_64: Process 12142 attached [pid 12141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12142] set_robust_list(0x555556ac56a0, 24 [pid 12141] <... openat resumed>) = 3 [pid 5051] mkdir("./600", 0777 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1147 [pid 12142] <... set_robust_list resumed>) = 0 [pid 12141] write(3, "1000", 4 [pid 5050] close(3 [pid 12141] <... write resumed>) = 4 [pid 12141] close(3) = 0 [pid 5050] <... close resumed>) = 0 [pid 12141] symlink("/dev/binderfs", "./binderfs" [pid 5050] rmdir("./599" [pid 12141] <... symlink resumed>) = 0 [pid 12141] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12141] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 12141] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12141] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12141] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12141] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12141] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12141] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12142] chdir("./572" [pid 5049] newfstatat(AT_FDCWD, "./590/cgroup", [pid 5046] newfstatat(AT_FDCWD, "./581/cgroup", [pid 5050] mkdir("./600", 0777 [pid 12142] <... chdir resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12143 attached [pid 12143] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12143] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12143] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./590/cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12144 attached [pid 12142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12141] <... clone3 resumed> => {parent_tid=[1175]}, 88) = 1175 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] unlink("./581/cgroup" [pid 12144] set_robust_list(0x555556ac56a0, 24 [pid 12142] <... prctl resumed>) = 0 [pid 12141] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1203 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... unlink resumed>) = 0 [pid 12144] <... set_robust_list resumed>) = 0 [pid 12142] setpgid(0, 0 [pid 5049] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12145 attached [pid 12144] chdir("./600" [pid 12141] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12145] set_robust_list(0x555556ac56a0, 24 [pid 12144] <... chdir resumed>) = 0 [pid 12142] <... setpgid resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12145] <... set_robust_list resumed>) = 0 [pid 12142] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12141] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1204 [pid 12144] <... prctl resumed>) = 0 [pid 12145] chdir("./600" [pid 12143] <... futex resumed>) = 0 [pid 12141] <... futex resumed>) = 1 [pid 12144] setpgid(0, 0 [pid 12141] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12144] <... setpgid resumed>) = 0 [pid 12143] open(".", O_RDONLY [pid 5046] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", [pid 12145] <... chdir resumed>) = 0 [pid 12145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12144] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12145] <... prctl resumed>) = 0 [pid 12144] <... symlink resumed>) = 0 [pid 12143] <... open resumed>) = 3 [pid 12142] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12144] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12145] setpgid(0, 0 [pid 12144] <... symlink resumed>) = 0 [pid 12143] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12145] <... setpgid resumed>) = 0 [pid 5046] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 12142] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5049] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12144] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12144] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12142] <... symlink resumed>) = 0 [pid 12143] <... futex resumed>) = 1 [pid 12141] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 12144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12145] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12143] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12141] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12144] write(3, "1000", 4 [pid 12145] <... symlink resumed>) = 0 [pid 12143] <... fcntl resumed>) = 0 [pid 12141] <... futex resumed>) = 0 [pid 12142] <... symlink resumed>) = 0 [pid 5049] unlink("./590/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12145] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12144] <... write resumed>) = 4 [pid 12143] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12141] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./581/cgroup.net", [pid 12145] <... symlink resumed>) = 0 [pid 12144] close(3 [pid 12143] <... futex resumed>) = 0 [pid 12142] <... openat resumed>) = 3 [pid 12141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12142] write(3, "1000", 4 [pid 12143] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12142] <... write resumed>) = 4 [pid 12141] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 12142] close(3 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12142] <... close resumed>) = 0 [pid 12141] <... futex resumed>) = 0 [pid 5046] unlink("./581/cgroup.net" [pid 12143] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12142] symlink("/dev/binderfs", "./binderfs" [pid 5049] close(3 [pid 12142] <... symlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./590" [pid 12145] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12144] <... close resumed>) = 0 [pid 12143] <... openat resumed>) = 4 [pid 12142] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12141] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] <... rmdir resumed>) = 0 [pid 5046] getdents64(3, [pid 12144] symlink("/dev/binderfs", "./binderfs" [pid 12142] <... futex resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12142] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12144] <... symlink resumed>) = 0 [pid 12142] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] close(3 [pid 12142] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12145] <... symlink resumed>) = 0 [pid 12142] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] mkdir("./591", 0777 [pid 5046] <... close resumed>) = 0 [pid 12144] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] rmdir("./581" [pid 12144] <... futex resumed>) = 0 [pid 12144] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12144] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12145] <... openat resumed>) = 3 [pid 12144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12142] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... mkdir resumed>) = 0 [pid 12142] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12145] write(3, "1000", 4 [pid 12144] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... rmdir resumed>) = 0 [pid 12145] <... write resumed>) = 4 [pid 12144] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12145] close(3 [pid 12144] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] mkdir("./582", 0777 [pid 12145] <... close resumed>) = 0 [pid 12142] <... mprotect resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12145] symlink("/dev/binderfs", "./binderfs" [pid 12144] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12145] <... symlink resumed>) = 0 [pid 12144] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... mkdir resumed>) = 0 [pid 12145] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12145] <... futex resumed>) = 0 [pid 12144] <... clone3 resumed> => {parent_tid=[1204]}, 88) = 1204 [pid 12145] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12144] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12142] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12143] +++ killed by SIGIO +++ [pid 12141] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12147 attached ./strace-static-x86_64: Process 12146 attached [pid 12145] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12144] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1174, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12145] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12144] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12147] set_robust_list(0x555556ac56a0, 24 [pid 12146] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12142] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1184 ./strace-static-x86_64: Process 12148 attached [pid 12147] <... set_robust_list resumed>) = 0 [pid 12146] <... rseq resumed>) = 0 [pid 12145] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12144] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12149 attached [pid 12148] set_robust_list(0x555556ac56a0, 24 [pid 12147] chdir("./591" [pid 12146] set_robust_list(0x7f504ff7f9a0, 24 [pid 12145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1166 [pid 12149] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12148] <... set_robust_list resumed>) = 0 [pid 12147] <... chdir resumed>) = 0 [pid 12146] <... set_robust_list resumed>) = 0 [pid 12145] <... mmap resumed>) = 0x7f504ff5f000 [pid 12142] <... clone3 resumed> => {parent_tid=[1148]}, 88) = 1148 [pid 5047] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12149] <... rseq resumed>) = 0 [pid 12147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12146] rt_sigprocmask(SIG_SETMASK, [], [pid 12142] rt_sigprocmask(SIG_SETMASK, [], [pid 12149] set_robust_list(0x7f504ff7f9a0, 24 [pid 12147] <... prctl resumed>) = 0 [pid 12146] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12142] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12149] <... set_robust_list resumed>) = 0 [pid 12148] chdir("./582" [pid 12147] setpgid(0, 0 [pid 12146] open(".", O_RDONLY [pid 12145] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12142] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... openat resumed>) = 3 [pid 12149] rt_sigprocmask(SIG_SETMASK, [], [pid 12148] <... chdir resumed>) = 0 [pid 12147] <... setpgid resumed>) = 0 [pid 12146] <... open resumed>) = 3 [pid 12145] <... mprotect resumed>) = 0 [pid 12142] <... futex resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 12149] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12148] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12147] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12146] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12149] open(".", O_RDONLY [pid 12148] <... prctl resumed>) = 0 [pid 12145] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12148] setpgid(0, 0 [pid 12147] <... symlink resumed>) = 0 [pid 12147] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12148] <... setpgid resumed>) = 0 [pid 12145] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] getdents64(3, [pid 12149] <... open resumed>) = 3 [pid 12148] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12147] <... symlink resumed>) = 0 [pid 12146] <... futex resumed>) = 1 [pid 12145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12144] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12149] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12148] <... symlink resumed>) = 0 [pid 12147] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12146] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12149] <... futex resumed>) = 1 [pid 12148] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12144] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] <... futex resumed>) = 0 [pid 5047] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12149] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12147] <... symlink resumed>) = 0 [pid 12146] <... futex resumed>) = 0 [pid 12144] <... futex resumed>) = 1 [pid 12142] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12148] <... symlink resumed>) = 0 [pid 12149] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12146] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12142] <... futex resumed>) = 0 [pid 12149] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12146] <... fcntl resumed>) = 0 [pid 12144] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12148] symlink("/syzcgroup/net/syz0", "./cgroup.net"./strace-static-x86_64: Process 12150 attached [pid 12149] <... fcntl resumed>) = 0 [pid 12147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12146] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12145] <... clone3 resumed> => {parent_tid=[1205]}, 88) = 1205 [pid 12144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12142] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12150] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12149] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12146] <... futex resumed>) = 0 [pid 12142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 12150] <... rseq resumed>) = 0 [pid 12149] <... futex resumed>) = 0 [pid 12146] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12145] rt_sigprocmask(SIG_SETMASK, [], [pid 12144] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12142] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12150] set_robust_list(0x7f504ff7f9a0, 24 [pid 12149] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12148] <... symlink resumed>) = 0 [pid 12147] <... openat resumed>) = 3 [pid 12146] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12145] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12144] <... futex resumed>) = 0 [pid 12142] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12150] <... set_robust_list resumed>) = 0 [pid 12149] <... openat resumed>) = 4 [pid 12148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12146] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12144] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12142] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12150] rt_sigprocmask(SIG_SETMASK, [], [pid 12149] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12147] write(3, "1000", 4 [pid 12145] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./586/cgroup.cpu" [pid 12150] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12149] <... futex resumed>) = ? [pid 12148] <... openat resumed>) = 3 [pid 12147] <... write resumed>) = 4 [pid 12145] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12150] open(".", O_RDONLY [pid 12149] +++ killed by SIGIO +++ [pid 12147] close(3 [pid 12150] <... open resumed>) = 3 [pid 12148] write(3, "1000", 4 [pid 12146] <... openat resumed>) = 4 [pid 12145] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12148] <... write resumed>) = 4 [pid 12150] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12148] close(3 [pid 12150] <... futex resumed>) = 1 [pid 12148] <... close resumed>) = 0 [pid 12145] <... futex resumed>) = 0 [pid 12148] symlink("/dev/binderfs", "./binderfs" [pid 12150] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12148] <... symlink resumed>) = 0 [pid 12147] <... close resumed>) = 0 [pid 12145] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12146] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12142] +++ killed by SIGIO +++ [pid 12150] <... fcntl resumed>) = 0 [pid 12147] symlink("/dev/binderfs", "./binderfs" [pid 12150] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12145] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12150] <... futex resumed>) = 0 [pid 12148] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12145] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12147] <... symlink resumed>) = 0 [pid 12150] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12145] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12144] <... futex resumed>) = ? [pid 5047] newfstatat(AT_FDCWD, "./586/binderfs", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1147, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12148] <... futex resumed>) = 0 [pid 12147] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12146] +++ killed by SIGIO +++ [pid 12145] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12150] <... futex resumed>) = 0 [pid 12148] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12147] <... futex resumed>) = 0 [pid 12145] <... futex resumed>) = 1 [pid 5047] unlink("./586/binderfs" [pid 12150] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12148] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12147] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12145] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12144] +++ killed by SIGIO +++ [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./572", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12147] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12148] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12147] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12150] <... openat resumed>) = 4 [pid 12148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12147] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1203, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12150] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12148] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./600", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 12148] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12147] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12145] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12150] +++ killed by SIGIO +++ [pid 12148] <... mprotect resumed>) = 0 [pid 12147] <... mprotect resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./586/cgroup", [pid 5045] newfstatat(3, "", [pid 12148] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12147] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] openat(AT_FDCWD, "./600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12147] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12147] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12151 attached [pid 12148] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5047] unlink("./586/cgroup" [pid 5045] getdents64(3, [pid 12151] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(3, "", [pid 12151] <... rseq resumed>) = 0 ./strace-static-x86_64: Process 12152 attached [pid 12151] set_robust_list(0x7f504ff7f9a0, 24 [pid 12147] <... clone3 resumed> => {parent_tid=[1185]}, 88) = 1185 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12152] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12151] <... set_robust_list resumed>) = 0 [pid 12148] <... clone3 resumed> => {parent_tid=[1167]}, 88) = 1167 [pid 12147] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] umount2("./572/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12152] <... rseq resumed>) = 0 [pid 12151] rt_sigprocmask(SIG_SETMASK, [], [pid 12148] rt_sigprocmask(SIG_SETMASK, [], [pid 12147] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12145] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5047] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12152] set_robust_list(0x7f504ff7f9a0, 24 [pid 12151] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12148] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12147] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12152] <... set_robust_list resumed>) = 0 [pid 12151] open(".", O_RDONLY [pid 12152] rt_sigprocmask(SIG_SETMASK, [], [pid 12148] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 12152] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12151] <... open resumed>) = 3 [pid 12148] <... futex resumed>) = 0 [pid 12147] <... futex resumed>) = 0 [pid 5051] umount2("./600/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12152] open(".", O_RDONLY) = 3 [pid 12148] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./600/cgroup.cpu", [pid 5047] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 12151] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12147] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12152] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12151] <... futex resumed>) = 0 [pid 12148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12147] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./600/cgroup.cpu" [pid 12152] <... futex resumed>) = 0 [pid 12151] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12148] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12147] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./572/cgroup.cpu", [pid 12152] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12147] <... futex resumed>) = 0 [pid 5051] umount2("./600/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1204, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12152] <... fcntl resumed>) = 0 [pid 12151] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12148] <... futex resumed>) = 0 [pid 12147] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12152] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12151] <... fcntl resumed>) = 0 [pid 12148] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12152] <... futex resumed>) = 0 [pid 12151] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./600/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 5045] unlink("./572/cgroup.cpu" [pid 12152] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12151] <... futex resumed>) = 1 [pid 12148] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12147] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./600", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12151] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12148] <... futex resumed>) = 0 [pid 12147] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./586/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 12148] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./572/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 12152] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12147] <... futex resumed>) = 0 [pid 5051] unlink("./600/binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12151] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12147] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./586" [pid 5045] newfstatat(AT_FDCWD, "./572/binderfs", [pid 12151] <... openat resumed>) = 4 [pid 12152] <... openat resumed>) = 4 [pid 5051] umount2("./600/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12147] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12152] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12151] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12147] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(3, "", [pid 12147] <... restart_syscall resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./600/cgroup", [pid 12148] <... futex resumed>) = ? [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5045] unlink("./572/binderfs" [pid 12151] +++ killed by SIGIO +++ [pid 5045] <... unlink resumed>) = 0 [pid 5047] mkdir("./587", 0777 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 5045] umount2("./572/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./572/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./572/cgroup") = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./572/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./572/blkio.bfq.io_wait_time_recursive", [pid 5051] unlink("./600/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./572/blkio.bfq.io_wait_time_recursive") = 0 [pid 5045] umount2("./572/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./572/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12153 attached [pid 5045] unlink("./572/cgroup.net" [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1176 [pid 5045] <... unlink resumed>) = 0 [pid 12153] set_robust_list(0x555556ac56a0, 24 [pid 12147] +++ killed by SIGIO +++ [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1184, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 12153] <... set_robust_list resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./600/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12153] chdir("./587" [pid 5045] getdents64(3, [pid 12153] <... chdir resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] close(3 [pid 12153] <... prctl resumed>) = 0 [pid 12153] setpgid(0, 0 [pid 5049] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 12153] <... setpgid resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 12153] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5049] newfstatat(3, "", [pid 5045] rmdir("./572" [pid 12153] <... symlink resumed>) = 0 [pid 12152] +++ killed by SIGIO +++ [pid 12148] +++ killed by SIGIO +++ [pid 5051] umount2("./600/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12153] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./600/cgroup.cpu", [pid 5049] getdents64(3, [pid 5045] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./600/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1166, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12153] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./600/cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12153] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5051] unlink("./600/blkio.bfq.io_wait_time_recursive" [pid 5045] mkdir("./573", 0777 [pid 5051] <... unlink resumed>) = 0 [pid 12153] <... symlink resumed>) = 0 [pid 5051] umount2("./600/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 12153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./600/cgroup.net", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12153] <... openat resumed>) = 3 [pid 5051] unlink("./600/cgroup.net" [pid 5050] umount2("./600/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./591/cgroup.cpu" [pid 5046] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] newfstatat(AT_FDCWD, "./600/binderfs", [pid 5051] close(3 [pid 12153] write(3, "1000", 4 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 12153] <... write resumed>) = 4 [pid 5051] rmdir("./600" [pid 5050] unlink("./600/binderfs" [pid 5046] newfstatat(3, "", ./strace-static-x86_64: Process 12154 attached [pid 12153] close(3 [pid 5049] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12154] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1149 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5050] umount2("./600/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12153] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./591/binderfs", [pid 12154] <... set_robust_list resumed>) = 0 [pid 12154] chdir("./573" [pid 12153] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... rmdir resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./600/cgroup", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12154] <... chdir resumed>) = 0 [pid 12154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] mkdir("./601", 0777 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./591/binderfs" [pid 5046] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12154] <... prctl resumed>) = 0 [pid 12153] <... symlink resumed>) = 0 [pid 5050] unlink("./600/cgroup" [pid 12154] setpgid(0, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12154] <... setpgid resumed>) = 0 [pid 12154] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 12153] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 12154] <... symlink resumed>) = 0 [pid 12153] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12153] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./600/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12153] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./582/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./591/cgroup", [pid 12153] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12154] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu") = 0 [pid 12153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./600/blkio.bfq.io_wait_time_recursive", [pid 5046] <... unlink resumed>) = 0 [pid 12154] symlink("/syzcgroup/net/syz1", "./cgroup.net") = 0 [pid 12153] <... mmap resumed>) = 0x7f504ff5f000 [pid 12154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12154] <... openat resumed>) = 3 [pid 12154] write(3, "1000", 4) = 4 [pid 12154] close(3) = 0 [pid 12154] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12154] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12154] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12154] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 12155 attached [pid 12155] set_robust_list(0x555556ac56a0, 24 [pid 12153] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./600/blkio.bfq.io_wait_time_recursive" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12155] <... set_robust_list resumed>) = 0 [pid 12154] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1205 [pid 12155] chdir("./601" [pid 12154] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12153] <... mprotect resumed>) = 0 [pid 5049] unlink("./591/cgroup" [pid 5046] newfstatat(AT_FDCWD, "./582/binderfs", [pid 12155] <... chdir resumed>) = 0 [pid 12154] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12153] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./600/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12153] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12155] <... prctl resumed>) = 0 [pid 12154] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12155] setpgid(0, 0 [pid 12154] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12153] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] newfstatat(AT_FDCWD, "./600/cgroup.net", [pid 5049] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./582/binderfs"./strace-static-x86_64: Process 12156 attached [pid 12155] <... setpgid resumed>) = 0 [pid 12156] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12155] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12154] <... clone3 resumed> => {parent_tid=[1150]}, 88) = 1150 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12156] <... rseq resumed>) = 0 [pid 12156] set_robust_list(0x7f504ff7f9a0, 24 [pid 12154] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12157 attached [pid 12156] <... set_robust_list resumed>) = 0 [pid 12154] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./600/cgroup.net" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12155] <... symlink resumed>) = 0 [pid 5046] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12156] rt_sigprocmask(SIG_SETMASK, [], [pid 12154] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12156] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12156] open(".", O_RDONLY [pid 12157] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12156] <... open resumed>) = 3 [pid 12155] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12154] <... futex resumed>) = 0 [pid 12153] <... clone3 resumed> => {parent_tid=[1177]}, 88) = 1177 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12157] set_robust_list(0x7f504ff7f9a0, 24 [pid 12153] rt_sigprocmask(SIG_SETMASK, [], [pid 12157] <... set_robust_list resumed>) = 0 [pid 12156] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12155] <... symlink resumed>) = 0 [pid 12154] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12157] rt_sigprocmask(SIG_SETMASK, [], [pid 12156] <... futex resumed>) = 0 [pid 12155] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12157] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12156] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12155] <... symlink resumed>) = 0 [pid 12154] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12154] <... futex resumed>) = 0 [pid 12154] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12157] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12156] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12156] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12153] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./582/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 12155] <... openat resumed>) = 3 [pid 5046] unlink("./582/cgroup" [pid 12156] <... futex resumed>) = 1 [pid 12155] write(3, "1000", 4 [pid 12154] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12156] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12154] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12153] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] close(3 [pid 5049] <... unlink resumed>) = 0 [pid 12155] <... write resumed>) = 4 [pid 12156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12154] <... futex resumed>) = 0 [pid 12153] <... futex resumed>) = 1 [pid 12157] <... futex resumed>) = 0 [pid 12156] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12154] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... close resumed>) = 0 [pid 12155] close(3 [pid 5046] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12153] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12157] open(".", O_RDONLY [pid 5046] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./582/blkio.bfq.io_wait_time_recursive") = 0 [pid 5046] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./582/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./582/cgroup.net" [pid 12156] <... openat resumed>) = 4 [pid 5046] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 12157] <... open resumed>) = 3 [pid 12155] <... close resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./600" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12157] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12156] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12155] symlink("/dev/binderfs", "./binderfs" [pid 12154] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./591/cgroup.net", [pid 5046] close(3 [pid 12157] <... futex resumed>) = 1 [pid 12153] <... futex resumed>) = 0 [pid 12157] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12155] <... symlink resumed>) = 0 [pid 12153] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] mkdir("./601", 0777 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12157] <... fcntl resumed>) = 0 [pid 12156] +++ killed by SIGIO +++ [pid 12153] <... futex resumed>) = 0 [pid 5049] unlink("./591/cgroup.net" [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./582" [pid 12157] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12153] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 12157] <... futex resumed>) = 0 [pid 12155] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 12157] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12155] <... futex resumed>) = 0 [pid 12153] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12155] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] mkdir("./583", 0777 [pid 12153] <... futex resumed>) = 0 [pid 12157] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12155] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12153] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12155] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12158 attached [pid 12155] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12158] set_robust_list(0x555556ac56a0, 24 [pid 12157] <... openat resumed>) = 4 [pid 12155] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] close(3 [pid 12155] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... close resumed>) = 0 [pid 12155] <... mprotect resumed>) = 0 [pid 5049] rmdir("./591" [pid 12154] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12159 attached [pid 12158] <... set_robust_list resumed>) = 0 [pid 12157] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1206 [pid 12155] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12153] <... futex resumed>) = ? [pid 5049] <... rmdir resumed>) = 0 [pid 12159] set_robust_list(0x555556ac56a0, 24 [pid 12155] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1168 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1149, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12158] chdir("./601" [pid 12157] +++ killed by SIGIO +++ [pid 12155] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12160 attached [pid 12160] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12155] <... clone3 resumed> => {parent_tid=[1206]}, 88) = 1206 [pid 12160] <... rseq resumed>) = 0 [pid 12155] rt_sigprocmask(SIG_SETMASK, [], [pid 12160] set_robust_list(0x7f504ff7f9a0, 24 [pid 12155] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12160] <... set_robust_list resumed>) = 0 [pid 12155] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12160] rt_sigprocmask(SIG_SETMASK, [], [pid 12155] <... futex resumed>) = 0 [pid 12160] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12160] open(".", O_RDONLY [pid 12159] <... set_robust_list resumed>) = 0 [pid 12158] <... chdir resumed>) = 0 [pid 5049] mkdir("./592", 0777 [pid 12160] <... open resumed>) = 3 [pid 12159] chdir("./583" [pid 12155] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12159] <... chdir resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12158] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12159] <... prctl resumed>) = 0 [pid 12158] <... prctl resumed>) = 0 [pid 12160] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12159] setpgid(0, 0 [pid 12158] setpgid(0, 0 [pid 12153] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12161 attached [pid 12160] <... futex resumed>) = 1 [pid 12159] <... setpgid resumed>) = 0 [pid 12158] <... setpgid resumed>) = 0 [pid 12155] <... futex resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1176, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] umount2("./573", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12160] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12159] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12158] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12155] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12160] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12155] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1186 [pid 12160] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12155] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12160] <... fcntl resumed>) = 0 [pid 12159] <... symlink resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12160] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12160] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12155] <... futex resumed>) = 0 [pid 12155] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... openat resumed>) = 3 [pid 12160] <... futex resumed>) = 0 [pid 12155] <... futex resumed>) = 1 [pid 12160] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12161] set_robust_list(0x555556ac56a0, 24 [pid 12160] <... openat resumed>) = 4 [pid 12159] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12158] <... symlink resumed>) = 0 [pid 12155] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(3, "", [pid 12160] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12155] <... futex resumed>) = ? [pid 12161] <... set_robust_list resumed>) = 0 [pid 12161] chdir("./592" [pid 12160] +++ killed by SIGIO +++ [pid 12159] <... symlink resumed>) = 0 [pid 12158] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5045] getdents64(3, [pid 12161] <... chdir resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12158] <... symlink resumed>) = 0 [pid 12161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5045] umount2("./573/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12161] setpgid(0, 0 [pid 12159] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12155] +++ killed by SIGIO +++ [pid 5045] newfstatat(AT_FDCWD, "./573/cgroup.cpu", [pid 12161] <... setpgid resumed>) = 0 [pid 12159] <... symlink resumed>) = 0 [pid 12158] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1205, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12161] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12158] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./601", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./573/cgroup.cpu" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12161] <... symlink resumed>) = 0 [pid 12158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5047] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(3, "", [pid 12161] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12159] <... openat resumed>) = 3 [pid 5051] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./573/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12161] <... symlink resumed>) = 0 [pid 12159] write(3, "1000", 4 [pid 12158] <... openat resumed>) = 3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./573/binderfs", [pid 5051] umount2("./601/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./601/cgroup.cpu", [pid 5045] unlink("./573/binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./601/cgroup.cpu") = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12159] <... write resumed>) = 4 [pid 12158] write(3, "1000", 4 [pid 5047] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12161] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12159] close(3 [pid 12158] <... write resumed>) = 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./601/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 12161] <... symlink resumed>) = 0 [pid 12158] close(3 [pid 12159] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 5045] umount2("./573/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12159] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./601/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12159] <... symlink resumed>) = 0 [pid 12158] <... close resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./573/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./587/cgroup.cpu" [pid 5051] unlink("./601/binderfs" [pid 12158] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./573/cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12158] <... symlink resumed>) = 0 [pid 5047] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12159] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12159] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12158] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./601/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./573/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./601/cgroup", [pid 5045] newfstatat(AT_FDCWD, "./573/blkio.bfq.io_wait_time_recursive", [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./601/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12159] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12158] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./587/binderfs", [pid 5045] unlink("./573/blkio.bfq.io_wait_time_recursive" [pid 12161] <... openat resumed>) = 3 [pid 12159] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12158] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12161] write(3, "1000", 4 [pid 12159] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12158] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./601/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./587/binderfs" [pid 12161] <... write resumed>) = 4 [pid 12159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12158] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./573/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./601/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12161] close(3 [pid 12159] <... mmap resumed>) = 0x7f504ff5f000 [pid 12158] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./573/cgroup.net", [pid 12161] <... close resumed>) = 0 [pid 12158] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12161] symlink("/dev/binderfs", "./binderfs" [pid 12159] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12158] <... mprotect resumed>) = 0 [pid 5051] unlink("./601/blkio.bfq.io_wait_time_recursive" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./573/cgroup.net" [pid 12161] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12158] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./601/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./601/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 12159] <... mprotect resumed>) = 0 [pid 12158] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] unlink("./601/cgroup.net" [pid 5047] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12159] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12158] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 12161] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12159] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./587/cgroup", [pid 5045] <... close resumed>) = 0 ./strace-static-x86_64: Process 12162 attached [pid 12161] <... futex resumed>) = 0 [pid 12159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12158] <... clone3 resumed> => {parent_tid=[1207]}, 88) = 1207 [pid 12161] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12158] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12161] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12158] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./587/cgroup" [pid 12161] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12162] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] getdents64(3, [pid 5045] rmdir("./573" [pid 12162] <... rseq resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12163 attached [pid 12162] set_robust_list(0x7f504ff7f9a0, 24 [pid 12161] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12158] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12163] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12162] <... set_robust_list resumed>) = 0 [pid 12161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12159] <... clone3 resumed> => {parent_tid=[1169]}, 88) = 1169 [pid 12158] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 12162] rt_sigprocmask(SIG_SETMASK, [], [pid 12158] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] mkdir("./574", 0777 [pid 12163] <... rseq resumed>) = 0 [pid 12161] <... mmap resumed>) = 0x7f504ff5f000 [pid 12159] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] rmdir("./601" [pid 5045] <... mkdir resumed>) = 0 [pid 12163] set_robust_list(0x7f504ff7f9a0, 24 [pid 12162] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12159] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12163] <... set_robust_list resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... rmdir resumed>) = 0 [pid 12159] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", [pid 12163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12162] open(".", O_RDONLY [pid 12161] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12159] <... futex resumed>) = 0 [pid 5051] mkdir("./602", 0777 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12164 attached [pid 12163] open(".", O_RDONLY [pid 12162] <... open resumed>) = 3 [pid 12161] <... mprotect resumed>) = 0 [pid 12159] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 12164] set_robust_list(0x555556ac56a0, 24 [pid 12163] <... open resumed>) = 3 [pid 12162] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12161] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... mkdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1151 [pid 12164] <... set_robust_list resumed>) = 0 [pid 12164] chdir("./574") = 0 [pid 12164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12164] setpgid(0, 0) = 0 [pid 12163] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12162] <... futex resumed>) = 1 [pid 12158] <... futex resumed>) = 0 [pid 12161] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12162] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12163] <... futex resumed>) = 1 [pid 12158] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12159] <... futex resumed>) = 0 [pid 12164] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12163] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12161] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12159] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12158] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12164] <... symlink resumed>) = 0 [pid 12163] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12162] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12159] <... futex resumed>) = 0 [pid 12158] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12163] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12162] <... fcntl resumed>) = 0 [pid 12159] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12163] <... fcntl resumed>) = 0 [pid 12162] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12163] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12162] <... futex resumed>) = 1 [pid 12158] <... futex resumed>) = 0 [pid 12163] <... futex resumed>) = 1 [pid 12162] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12159] <... futex resumed>) = 0 [pid 12163] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12158] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./587/cgroup.net", [pid 12162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12159] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12165 attached [pid 12164] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12163] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12159] <... futex resumed>) = 0 [pid 12158] <... futex resumed>) = 0 [pid 12162] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12165] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12164] <... symlink resumed>) = 0 [pid 12165] <... rseq resumed>) = 0 [pid 12163] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12159] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12158] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./587/cgroup.net" [pid 12165] set_robust_list(0x7f504ff7f9a0, 24 [pid 12164] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12163] <... openat resumed>) = 4 [pid 12162] <... openat resumed>) = 4 [pid 12161] <... clone3 resumed> => {parent_tid=[1187]}, 88) = 1187 [pid 12159] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12158] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12166 attached [pid 12165] <... set_robust_list resumed>) = 0 [pid 12164] <... symlink resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1207 [pid 12166] set_robust_list(0x555556ac56a0, 24 [pid 12165] rt_sigprocmask(SIG_SETMASK, [], [pid 12164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12163] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12162] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12166] <... set_robust_list resumed>) = 0 [pid 12165] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12164] <... openat resumed>) = 3 [pid 12161] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] getdents64(3, [pid 12166] chdir("./602" [pid 12165] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12164] write(3, "1000", 4 [pid 12163] +++ killed by SIGIO +++ [pid 12162] +++ killed by SIGIO +++ [pid 12161] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12164] <... write resumed>) = 4 [pid 12164] close(3) = 0 [pid 12164] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12164] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12166] <... chdir resumed>) = 0 [pid 12164] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12164] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] close(3 [pid 12166] setpgid(0, 0 [pid 12161] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... close resumed>) = 0 [pid 12166] <... setpgid resumed>) = 0 [pid 12161] <... futex resumed>) = 1 [pid 5047] rmdir("./587" [pid 12164] <... mmap resumed>) = 0x7f504ff5f000 [pid 12164] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12166] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12161] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12164] <... mprotect resumed>) = 0 [pid 12164] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... rmdir resumed>) = 0 [pid 12164] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12164] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12167 attached [pid 12165] <... futex resumed>) = 0 [pid 12164] <... clone3 resumed> => {parent_tid=[1152]}, 88) = 1152 [pid 12165] open(".", O_RDONLY [pid 12167] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12166] <... symlink resumed>) = 0 [pid 12165] <... open resumed>) = 3 [pid 12164] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] mkdir("./588", 0777 [pid 12167] <... rseq resumed>) = 0 [pid 12165] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12164] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12158] +++ killed by SIGIO +++ [pid 12167] set_robust_list(0x7f504ff7f9a0, 24 [pid 12166] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12165] <... futex resumed>) = 1 [pid 12164] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12161] <... futex resumed>) = 0 [pid 12159] +++ killed by SIGIO +++ [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1206, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... mkdir resumed>) = 0 [pid 12167] <... set_robust_list resumed>) = 0 [pid 12165] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12164] <... futex resumed>) = 0 [pid 12161] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12161] <... futex resumed>) = 0 [pid 12161] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12165] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12167] rt_sigprocmask(SIG_SETMASK, [], [pid 12164] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12167] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12165] <... fcntl resumed>) = 0 [pid 12167] open(".", O_RDONLY [pid 12165] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12161] <... futex resumed>) = 0 [pid 12167] <... open resumed>) = 3 [pid 12165] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12161] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./601", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1168, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12161] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12167] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12165] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12161] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] openat(AT_FDCWD, "./601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12167] <... futex resumed>) = 1 [pid 12166] <... symlink resumed>) = 0 [pid 12165] <... openat resumed>) = 4 [pid 12164] <... futex resumed>) = 0 [pid 12161] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12167] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12166] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12165] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12164] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12161] restart_syscall(<... resuming interrupted futex ...> [pid 5050] <... openat resumed>) = 3 [pid 12167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12164] <... futex resumed>) = 0 [pid 12167] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12164] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12161] <... restart_syscall resumed>) = ? [pid 5050] newfstatat(3, "", [pid 5046] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12166] <... symlink resumed>) = 0 [pid 12166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12167] <... fcntl resumed>) = 0 [pid 12166] <... openat resumed>) = 3 [pid 12165] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12167] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12166] write(3, "1000", 4 [pid 12167] <... futex resumed>) = 1 [pid 12164] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5046] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 12168 attached [pid 12167] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12166] <... write resumed>) = 4 [pid 12164] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12168] set_robust_list(0x555556ac56a0, 24 [pid 12167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12166] close(3 [pid 12164] <... futex resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1178 [pid 5046] <... openat resumed>) = 3 [pid 12168] <... set_robust_list resumed>) = 0 [pid 12167] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12166] <... close resumed>) = 0 [pid 12164] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./601/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(3, "", [pid 12168] chdir("./588" [pid 12167] <... openat resumed>) = 4 [pid 12166] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12168] <... chdir resumed>) = 0 [pid 12167] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12164] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] newfstatat(AT_FDCWD, "./601/cgroup.cpu", [pid 5046] getdents64(3, [pid 12166] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12166] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./601/cgroup.cpu" [pid 12168] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12168] <... prctl resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12168] setpgid(0, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12168] <... setpgid resumed>) = 0 [pid 12166] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./583/cgroup.cpu", [pid 12168] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12166] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] unlink("./583/cgroup.cpu" [pid 12168] <... symlink resumed>) = 0 [pid 12166] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] umount2("./601/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12168] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12166] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12161] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12168] <... symlink resumed>) = 0 [pid 12166] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12168] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12166] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12168] <... symlink resumed>) = 0 [pid 12166] <... mprotect resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1186, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12166] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12168] <... openat resumed>) = 3 [pid 12166] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... openat resumed>) = 3 [pid 12166] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12167] +++ killed by SIGIO +++ [pid 12164] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./601/binderfs", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12168] write(3, "1000", 4 [pid 5049] newfstatat(3, "", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./583/binderfs", [pid 12168] <... write resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./601/binderfs" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1151, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 12169 attached [pid 12168] close(3 [pid 5049] getdents64(3, [pid 5046] unlink("./583/binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 12168] <... close resumed>) = 0 [pid 5050] umount2("./601/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 12168] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12168] <... symlink resumed>) = 0 [pid 12169] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12168] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12166] <... clone3 resumed> => {parent_tid=[1208]}, 88) = 1208 [pid 5050] newfstatat(AT_FDCWD, "./601/cgroup", [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12169] <... rseq resumed>) = 0 [pid 12168] <... futex resumed>) = 0 [pid 12166] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./583/cgroup", [pid 5045] umount2("./574", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12169] set_robust_list(0x7f504ff7f9a0, 24 [pid 12168] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12166] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./601/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12169] <... set_robust_list resumed>) = 0 [pid 12168] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12166] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 5046] unlink("./583/cgroup" [pid 5045] openat(AT_FDCWD, "./574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12169] rt_sigprocmask(SIG_SETMASK, [], [pid 12168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12166] <... futex resumed>) = 0 [pid 5050] umount2("./601/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12169] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12168] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12166] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 5049] unlink("./592/cgroup.cpu" [pid 5046] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 12168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] newfstatat(AT_FDCWD, "./601/blkio.bfq.io_wait_time_recursive", [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12169] open(".", O_RDONLY [pid 12168] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 12169] <... open resumed>) = 3 [pid 12168] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./601/blkio.bfq.io_wait_time_recursive" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] umount2("./574/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12169] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12168] <... mprotect resumed>) = 0 [pid 5050] umount2("./601/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12166] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12168] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./574/cgroup.cpu", [pid 12169] <... futex resumed>) = 1 [pid 12168] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12166] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12169] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12166] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./601/cgroup.net", [pid 5049] newfstatat(AT_FDCWD, "./592/binderfs", [pid 5046] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", [pid 5045] unlink("./574/cgroup.cpu"./strace-static-x86_64: Process 12170 attached [pid 12169] <... fcntl resumed>) = 0 [pid 12166] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12170] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12169] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12168] <... clone3 resumed> => {parent_tid=[1179]}, 88) = 1179 [pid 12166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] unlink("./601/cgroup.net" [pid 5045] umount2("./574/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12170] <... rseq resumed>) = 0 [pid 12169] <... futex resumed>) = 0 [pid 12168] rt_sigprocmask(SIG_SETMASK, [], [pid 12166] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./592/binderfs" [pid 5046] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 12170] set_robust_list(0x7f504ff7f9a0, 24 [pid 12169] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12168] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12166] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12170] <... set_robust_list resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./592/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./592/cgroup") = 0 [pid 5049] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12168] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./574/binderfs", [pid 5049] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./592/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./592/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./592/cgroup.net") = 0 [pid 12169] <... openat resumed>) = 4 [pid 5049] getdents64(3, [pid 5045] unlink("./574/binderfs" [pid 12170] rt_sigprocmask(SIG_SETMASK, [], [pid 12168] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 12170] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12168] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] rmdir("./592" [pid 12170] open(".", O_RDONLY [pid 12169] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12166] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] close(3 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./574/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12170] <... open resumed>) = 3 [pid 12169] <... futex resumed>) = ? [pid 5050] <... close resumed>) = 0 [pid 5046] unlink("./583/cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12170] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] rmdir("./601" [pid 5049] mkdir("./593", 0777) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./574/cgroup", [pid 12170] <... futex resumed>) = 1 [pid 12168] <... futex resumed>) = 0 [pid 12170] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12168] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12168] <... futex resumed>) = 0 [pid 5050] mkdir("./602", 0777 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] getdents64(3, [pid 12170] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12168] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] unlink("./574/cgroup" [pid 12170] <... fcntl resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12170] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12171 attached ) = 1 [pid 12169] +++ killed by SIGIO +++ [pid 12168] <... futex resumed>) = 0 [pid 12166] +++ killed by SIGIO +++ [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] close(3 [pid 5045] umount2("./574/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12171] set_robust_list(0x555556ac56a0, 24 [pid 12170] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12168] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1207, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1188 [pid 5046] <... close resumed>) = 0 [pid 12171] <... set_robust_list resumed>) = 0 [pid 12170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12168] <... futex resumed>) = 0 [pid 5046] rmdir("./583" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12170] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12168] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 12170] <... openat resumed>) = 4 [pid 5051] umount2("./602", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./574/blkio.bfq.io_wait_time_recursive", [pid 5051] <... openat resumed>) = 3 [pid 5051] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./602/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12168] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12168] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] unlink("./574/blkio.bfq.io_wait_time_recursive" [pid 12171] chdir("./593" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 12171] <... chdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./602/cgroup.cpu", [pid 5045] umount2("./574/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./574/cgroup.net", [pid 5051] unlink("./602/cgroup.cpu"./strace-static-x86_64: Process 12172 attached [pid 12171] setpgid(0, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12172] set_robust_list(0x555556ac56a0, 24 [pid 12171] <... setpgid resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1208 [pid 5046] mkdir("./584", 0777 [pid 12172] <... set_robust_list resumed>) = 0 [pid 5045] unlink("./574/cgroup.net" [pid 12171] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] umount2("./602/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12172] chdir("./602" [pid 5051] newfstatat(AT_FDCWD, "./602/binderfs", [pid 12172] <... chdir resumed>) = 0 [pid 12171] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./602/binderfs" [pid 12172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12171] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5045] getdents64(3, [pid 12172] <... prctl resumed>) = 0 [pid 12172] setpgid(0, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] umount2("./602/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./602/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./602/cgroup" [pid 12172] <... setpgid resumed>) = 0 [pid 5045] close(3 [pid 12171] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12172] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] <... close resumed>) = 0 [pid 5051] umount2("./602/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12172] <... symlink resumed>) = 0 [pid 5045] rmdir("./574" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./602/blkio.bfq.io_wait_time_recursive", [pid 5045] <... rmdir resumed>) = 0 [pid 12172] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12171] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12170] +++ killed by SIGIO +++ [pid 12168] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./575", 0777 [pid 12171] <... symlink resumed>) = 0 [pid 5051] unlink("./602/blkio.bfq.io_wait_time_recursive") = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1170 [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12173 attached [pid 12172] <... symlink resumed>) = 0 [pid 12171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1178, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12172] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12171] <... openat resumed>) = 3 [pid 5051] umount2("./602/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./602/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./602/cgroup.net" [pid 12172] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12174 attached [pid 12173] set_robust_list(0x555556ac56a0, 24 [pid 12172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12171] write(3, "1000", 4 [pid 5051] <... unlink resumed>) = 0 [pid 12173] <... set_robust_list resumed>) = 0 [pid 12171] <... write resumed>) = 4 [pid 12171] close(3 [pid 12173] chdir("./584" [pid 12171] <... close resumed>) = 0 [pid 5051] getdents64(3, [pid 5047] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12173] <... chdir resumed>) = 0 [pid 12171] symlink("/dev/binderfs", "./binderfs" [pid 12173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12171] <... symlink resumed>) = 0 [pid 12173] <... prctl resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12172] <... openat resumed>) = 3 [pid 5051] close(3 [pid 12172] write(3, "1000", 4 [pid 5051] <... close resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12174] set_robust_list(0x555556ac56a0, 24 [pid 12173] setpgid(0, 0 [pid 12172] <... write resumed>) = 4 [pid 12171] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1153 [pid 12174] <... set_robust_list resumed>) = 0 [pid 12173] <... setpgid resumed>) = 0 [pid 12172] close(3 [pid 12171] <... futex resumed>) = 0 [pid 12172] <... close resumed>) = 0 [pid 12171] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] rmdir("./602" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12174] chdir("./575" [pid 12173] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12172] symlink("/dev/binderfs", "./binderfs" [pid 12171] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 12174] <... chdir resumed>) = 0 [pid 12171] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] getdents64(3, [pid 12174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12174] <... prctl resumed>) = 0 [pid 12171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12174] setpgid(0, 0 [pid 12171] <... mmap resumed>) = 0x7f504ff5f000 [pid 12174] <... setpgid resumed>) = 0 [pid 12173] <... symlink resumed>) = 0 [pid 12172] <... symlink resumed>) = 0 [pid 12171] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] mkdir("./603", 0777 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12174] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12173] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12172] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12171] <... mprotect resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5047] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12174] <... symlink resumed>) = 0 [pid 12172] <... futex resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./588/cgroup.cpu", [pid 12174] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12172] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12171] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12173] <... symlink resumed>) = 0 [pid 12172] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] unlink("./588/cgroup.cpu"./strace-static-x86_64: Process 12175 attached [pid 12174] <... symlink resumed>) = 0 [pid 12173] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12171] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1209 [pid 12173] <... symlink resumed>) = 0 [pid 12172] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12171] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12174] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12172] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12176 attached [pid 12176] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12176] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12176] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12176] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12175] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12174] <... symlink resumed>) = 0 [pid 12175] chdir("./603" [pid 12174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12172] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12171] <... clone3 resumed> => {parent_tid=[1189]}, 88) = 1189 [pid 5047] newfstatat(AT_FDCWD, "./588/binderfs", [pid 12175] <... chdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12172] <... mprotect resumed>) = 0 [pid 12171] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] unlink("./588/binderfs" [pid 12175] <... prctl resumed>) = 0 [pid 12175] setpgid(0, 0) = 0 [pid 12175] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 12173] <... openat resumed>) = 3 [pid 12174] <... openat resumed>) = 3 [pid 12172] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12174] write(3, "1000", 4 [pid 12172] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12174] <... write resumed>) = 4 [pid 12173] write(3, "1000", 4 [pid 12175] <... symlink resumed>) = 0 [pid 12174] close(3 [pid 12173] <... write resumed>) = 4 [pid 12172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12171] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12176] <... futex resumed>) = 0 [pid 12175] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12174] <... close resumed>) = 0 [pid 12171] <... futex resumed>) = 1 [pid 5047] newfstatat(AT_FDCWD, "./588/cgroup", [pid 12173] close(3 [pid 12171] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12177 attached [pid 12176] open(".", O_RDONLY [pid 12175] <... symlink resumed>) = 0 [pid 12174] symlink("/dev/binderfs", "./binderfs" [pid 12173] <... close resumed>) = 0 [pid 12172] <... clone3 resumed> => {parent_tid=[1209]}, 88) = 1209 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12177] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12176] <... open resumed>) = 3 [pid 12174] <... symlink resumed>) = 0 [pid 12177] <... rseq resumed>) = 0 [pid 12175] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12174] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12173] symlink("/dev/binderfs", "./binderfs" [pid 12172] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] unlink("./588/cgroup" [pid 12177] set_robust_list(0x7f504ff7f9a0, 24 [pid 12176] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12175] <... symlink resumed>) = 0 [pid 12177] <... set_robust_list resumed>) = 0 [pid 12176] <... futex resumed>) = 1 [pid 12175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12172] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12171] <... futex resumed>) = 0 [pid 12177] rt_sigprocmask(SIG_SETMASK, [], [pid 12176] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12175] <... openat resumed>) = 3 [pid 12174] <... futex resumed>) = 0 [pid 12173] <... symlink resumed>) = 0 [pid 12172] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12177] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12174] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12171] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12177] open(".", O_RDONLY [pid 12176] <... futex resumed>) = 0 [pid 12175] write(3, "1000", 4 [pid 12174] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12173] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12172] <... futex resumed>) = 0 [pid 12171] <... futex resumed>) = 1 [pid 5047] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12177] <... open resumed>) = 3 [pid 12176] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12175] <... write resumed>) = 4 [pid 12174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12173] <... futex resumed>) = 0 [pid 12172] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12171] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12173] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12177] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12176] <... fcntl resumed>) = 0 [pid 12175] close(3 [pid 12177] <... futex resumed>) = 0 [pid 12176] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12175] <... close resumed>) = 0 [pid 12174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12173] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 12177] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12176] <... futex resumed>) = 0 [pid 12175] symlink("/dev/binderfs", "./binderfs" [pid 12173] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12171] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12176] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12175] <... symlink resumed>) = 0 [pid 12174] <... mmap resumed>) = 0x7f504ff5f000 [pid 12172] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12171] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12174] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12173] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12172] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12171] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 12176] <... openat resumed>) = 4 [pid 12175] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12174] <... mprotect resumed>) = 0 [pid 12173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12172] <... futex resumed>) = 1 [pid 12171] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12175] <... futex resumed>) = 0 [pid 12177] <... futex resumed>) = 0 [pid 12175] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... unlink resumed>) = 0 [pid 12172] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12171] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12177] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12175] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12177] <... fcntl resumed>) = 0 [pid 12175] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12174] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12177] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12175] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12173] <... mmap resumed>) = 0x7f504ff5f000 [pid 12177] <... futex resumed>) = 0 [pid 12176] +++ killed by SIGIO +++ [pid 12175] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12174] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12172] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12177] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12175] <... mmap resumed>) = 0x7f504ff5f000 [pid 12175] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12173] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12172] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12175] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12175] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] newfstatat(AT_FDCWD, "./588/cgroup.net", ./strace-static-x86_64: Process 12179 attached ./strace-static-x86_64: Process 12178 attached [pid 12177] <... futex resumed>) = 0 [pid 12172] <... futex resumed>) = 1 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12179] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12178] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12177] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12175] <... clone3 resumed> => {parent_tid=[1210]}, 88) = 1210 [pid 12173] <... mprotect resumed>) = 0 [pid 12172] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12179] <... rseq resumed>) = 0 [pid 12178] <... rseq resumed>) = 0 [pid 12174] <... clone3 resumed> => {parent_tid=[1154]}, 88) = 1154 [pid 12173] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12172] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] unlink("./588/cgroup.net" [pid 12179] set_robust_list(0x7f504ff7f9a0, 24 [pid 12178] set_robust_list(0x7f504ff7f9a0, 24 [pid 12177] <... openat resumed>) = 4 [pid 12175] rt_sigprocmask(SIG_SETMASK, [], [pid 12172] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... unlink resumed>) = 0 [pid 12179] <... set_robust_list resumed>) = 0 [pid 12178] <... set_robust_list resumed>) = 0 [pid 12175] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12174] rt_sigprocmask(SIG_SETMASK, [], [pid 12173] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12171] +++ killed by SIGIO +++ [pid 12179] rt_sigprocmask(SIG_SETMASK, [], [pid 12178] rt_sigprocmask(SIG_SETMASK, [], [pid 12177] +++ killed by SIGIO +++ [pid 12175] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1188, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12179] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12178] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12175] <... futex resumed>) = 0 [pid 12174] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12179] open(".", O_RDONLY [pid 12178] open(".", O_RDONLY [pid 12175] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12178] <... open resumed>) = 3 [pid 12174] <... futex resumed>) = 0 [pid 12179] <... open resumed>) = 3 [pid 12178] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./593", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12178] <... futex resumed>) = 1 [pid 12175] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12179] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12178] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12175] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12174] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] openat(AT_FDCWD, "./593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12179] <... futex resumed>) = 0 [pid 12178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12175] <... futex resumed>) = 0 [pid 12174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... openat resumed>) = 3 [pid 12179] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12178] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12175] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12178] <... fcntl resumed>) = 0 [pid 12174] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 12179] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12174] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12179] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12174] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12179] <... fcntl resumed>) = 0 [pid 12179] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12174] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 12179] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12174] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12179] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12178] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12174] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12179] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12178] <... futex resumed>) = 1 [pid 12175] <... futex resumed>) = 0 [pid 12174] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 12173] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12172] +++ killed by SIGIO +++ [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] umount2("./593/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12175] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12180 attached [pid 12178] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12175] <... futex resumed>) = 0 [pid 5047] close(3 [pid 12180] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12175] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12173] <... clone3 resumed> => {parent_tid=[1171]}, 88) = 1171 [pid 12180] <... rseq resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 12173] rt_sigprocmask(SIG_SETMASK, [], [pid 12180] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12173] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1208, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] rmdir("./588" [pid 12180] rt_sigprocmask(SIG_SETMASK, [], [pid 12173] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./602", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12180] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12173] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12180] open(".", O_RDONLY [pid 12179] <... openat resumed>) = 4 [pid 12178] <... openat resumed>) = 4 [pid 12175] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12174] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12173] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] openat(AT_FDCWD, "./602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./593/cgroup.cpu", [pid 12180] <... open resumed>) = 3 [pid 12179] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12180] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 5049] unlink("./593/cgroup.cpu" [pid 5047] <... rmdir resumed>) = 0 [pid 12180] <... futex resumed>) = 1 [pid 12179] +++ killed by SIGIO +++ [pid 12178] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12175] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12174] +++ killed by SIGIO +++ [pid 12173] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12180] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12178] <... futex resumed>) = ? [pid 12173] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 5047] mkdir("./589", 0777 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1153, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12178] +++ killed by SIGIO +++ [pid 5049] umount2("./593/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... mkdir resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./593/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12173] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./575", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 12180] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12175] +++ killed by SIGIO +++ [pid 12173] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./602/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./593/binderfs" [pid 5045] newfstatat(3, "", [pid 12180] <... fcntl resumed>) = 0 [pid 12180] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12173] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./602/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 12173] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1209, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12180] <... futex resumed>) = 0 [pid 12180] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12173] <... futex resumed>) = 0 [pid 5051] umount2("./603", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./602/cgroup.cpu" [pid 5049] umount2("./593/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12173] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./575/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12180] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12181 attached [pid 12180] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] set_robust_list(0x555556ac56a0, 24 [pid 12173] <... futex resumed>) = ? [pid 5051] openat(AT_FDCWD, "./603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./602/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./593/cgroup", [pid 12180] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1180 [pid 5045] newfstatat(AT_FDCWD, "./575/cgroup.cpu", [pid 12181] <... set_robust_list resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./602/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12181] chdir("./589" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12181] <... chdir resumed>) = 0 [pid 12181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12181] setpgid(0, 0 [pid 5051] newfstatat(3, "", [pid 5050] unlink("./602/binderfs" [pid 5049] unlink("./593/cgroup" [pid 5045] unlink("./575/cgroup.cpu" [pid 12181] <... setpgid resumed>) = 0 [pid 12173] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12181] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5049] umount2("./593/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./575/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12181] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./602/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1170, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./593/blkio.bfq.io_wait_time_recursive", [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] newfstatat(AT_FDCWD, "./575/binderfs", [pid 5051] umount2("./603/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... restart_syscall resumed>) = 0 [pid 12181] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./602/cgroup", [pid 12181] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./602/cgroup" [pid 5051] newfstatat(AT_FDCWD, "./603/cgroup.cpu", [pid 5049] unlink("./593/blkio.bfq.io_wait_time_recursive" [pid 5046] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./575/binderfs" [pid 12181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12181] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./602/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12181] write(3, "1000", 4 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] <... write resumed>) = 4 [pid 12181] close(3 [pid 5050] newfstatat(AT_FDCWD, "./602/blkio.bfq.io_wait_time_recursive", [pid 12181] <... close resumed>) = 0 [pid 5051] unlink("./603/cgroup.cpu" [pid 5049] umount2("./593/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./575/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12181] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 12181] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./602/blkio.bfq.io_wait_time_recursive" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./593/cgroup.net", [pid 5046] newfstatat(3, "", [pid 5045] newfstatat(AT_FDCWD, "./575/cgroup", [pid 12181] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./603/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12181] <... futex resumed>) = 0 [pid 12181] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./602/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12181] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./603/binderfs", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./593/cgroup.net" [pid 5045] unlink("./575/cgroup" [pid 12181] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./602/cgroup.net", [pid 12181] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] unlink("./603/binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 12181] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./575/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12181] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./603/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./602/cgroup.net" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 5046] newfstatat(AT_FDCWD, "./584/cgroup.cpu", [pid 12181] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./603/cgroup", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12181] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12181] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./575/blkio.bfq.io_wait_time_recursive", [pid 5051] unlink("./603/cgroup" [pid 5050] getdents64(3, [pid 5049] rmdir("./593" [pid 5046] unlink("./584/cgroup.cpu"./strace-static-x86_64: Process 12182 attached [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12182] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12181] <... clone3 resumed> => {parent_tid=[1181]}, 88) = 1181 [pid 5051] umount2("./603/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] close(3 [pid 12182] <... rseq resumed>) = 0 [pid 12181] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] unlink("./575/blkio.bfq.io_wait_time_recursive" [pid 12182] set_robust_list(0x7f504ff7f9a0, 24 [pid 12181] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] mkdir("./594", 0777 [pid 5046] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12182] <... set_robust_list resumed>) = 0 [pid 12181] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] rmdir("./602" [pid 5049] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 12182] rt_sigprocmask(SIG_SETMASK, [], [pid 12181] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./603/blkio.bfq.io_wait_time_recursive", [pid 12182] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12181] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./584/binderfs", [pid 5045] umount2("./575/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12182] open(".", O_RDONLY [pid 5051] unlink("./603/blkio.bfq.io_wait_time_recursive" [pid 5050] mkdir("./603", 0777 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./575/cgroup.net", [pid 12182] <... open resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./584/binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./575/cgroup.net" [pid 5050] <... mkdir resumed>) = 0 [pid 12182] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 5046] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 5046] newfstatat(AT_FDCWD, "./584/cgroup", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12183 attached [pid 12182] <... futex resumed>) = 1 [pid 12181] <... futex resumed>) = 0 [pid 5051] umount2("./603/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12183] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3 [pid 12182] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12181] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./603/cgroup.net", [pid 12182] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12183] <... set_robust_list resumed>) = 0 [pid 12182] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12181] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./584/cgroup" [pid 5045] <... close resumed>) = 0 [pid 12183] chdir("./594" [pid 12182] <... fcntl resumed>) = 0 [pid 12181] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./603/cgroup.net" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1190 [pid 5046] <... unlink resumed>) = 0 [pid 5045] rmdir("./575" [pid 12183] <... chdir resumed>) = 0 [pid 12182] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12182] <... futex resumed>) = 0 [pid 12181] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12183] <... prctl resumed>) = 0 [pid 12182] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12181] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5046] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12184 attached [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 12182] <... openat resumed>) = 4 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12184] set_robust_list(0x555556ac56a0, 24 [pid 5046] unlink("./584/blkio.bfq.io_wait_time_recursive" [pid 12184] <... set_robust_list resumed>) = 0 [pid 12183] setpgid(0, 0 [pid 12182] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12181] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] getdents64(3, [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1210 [pid 5046] <... unlink resumed>) = 0 [pid 5045] mkdir("./576", 0777 [pid 12184] chdir("./603" [pid 12183] <... setpgid resumed>) = 0 [pid 12182] <... futex resumed>) = ? [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 12183] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... close resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 5046] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12184] <... chdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 12183] <... symlink resumed>) = 0 [pid 5051] rmdir("./603" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12184] setpgid(0, 0) = 0 [pid 5046] unlink("./584/cgroup.net") = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12184] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] <... rmdir resumed>) = 0 [pid 12183] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3 [pid 12183] <... symlink resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 5046] rmdir("./584" [pid 12183] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12182] +++ killed by SIGIO +++ [pid 12181] +++ killed by SIGIO +++ [pid 5051] mkdir("./604", 0777 [pid 5046] <... rmdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1180, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12183] <... symlink resumed>) = 0 [pid 12184] <... symlink resumed>) = 0 [pid 12183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12184] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5051] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12185 attached [pid 12183] <... openat resumed>) = 3 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] mkdir("./585", 0777 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1155 [pid 12185] set_robust_list(0x555556ac56a0, 24 [pid 12184] <... symlink resumed>) = 0 [pid 12183] write(3, "1000", 4 [pid 5047] <... openat resumed>) = 3 [pid 5047] newfstatat(3, "", [pid 5046] <... mkdir resumed>) = 0 [pid 12184] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12185] <... set_robust_list resumed>) = 0 [pid 12183] <... write resumed>) = 4 [pid 5047] getdents64(3, [pid 12185] chdir("./576" [pid 12183] close(3) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12184] <... symlink resumed>) = 0 [pid 12183] symlink("/dev/binderfs", "./binderfs" [pid 5047] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12186 attached ./strace-static-x86_64: Process 12187 attached [pid 12185] <... chdir resumed>) = 0 [pid 12183] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 12185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./589/cgroup.cpu" [pid 12187] set_robust_list(0x555556ac56a0, 24 [pid 12186] set_robust_list(0x555556ac56a0, 24 [pid 12185] <... prctl resumed>) = 0 [pid 12183] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1211 [pid 12187] <... set_robust_list resumed>) = 0 [pid 12186] <... set_robust_list resumed>) = 0 [pid 12185] setpgid(0, 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1172 [pid 12184] <... openat resumed>) = 3 [pid 12187] chdir("./585" [pid 12185] <... setpgid resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12187] <... chdir resumed>) = 0 [pid 5047] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12186] chdir("./604" [pid 12185] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12184] write(3, "1000", 4 [pid 12183] <... futex resumed>) = 0 [pid 12187] <... prctl resumed>) = 0 [pid 12186] <... chdir resumed>) = 0 [pid 12184] <... write resumed>) = 4 [pid 12183] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12187] setpgid(0, 0 [pid 12186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12185] <... symlink resumed>) = 0 [pid 12184] close(3 [pid 12183] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12187] <... setpgid resumed>) = 0 [pid 12186] <... prctl resumed>) = 0 [pid 12185] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12184] <... close resumed>) = 0 [pid 12183] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] newfstatat(AT_FDCWD, "./589/binderfs", [pid 12186] setpgid(0, 0 [pid 12184] symlink("/dev/binderfs", "./binderfs" [pid 12187] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 12186] <... setpgid resumed>) = 0 [pid 12185] <... symlink resumed>) = 0 [pid 12184] <... symlink resumed>) = 0 [pid 12183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12187] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12185] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] unlink("./589/binderfs" [pid 12186] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12185] <... symlink resumed>) = 0 [pid 12184] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12183] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... unlink resumed>) = 0 [pid 12187] <... symlink resumed>) = 0 [pid 12184] <... futex resumed>) = 0 [pid 12187] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 12186] <... symlink resumed>) = 0 [pid 12185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12184] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12183] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12184] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./589/cgroup", [pid 12187] <... openat resumed>) = 3 [pid 12184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12183] <... mprotect resumed>) = 0 [pid 12186] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12185] <... openat resumed>) = 3 [pid 12184] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./589/cgroup" [pid 12187] write(3, "1000", 4 [pid 12185] write(3, "1000", 4 [pid 12184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12183] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12187] <... write resumed>) = 4 [pid 12186] <... symlink resumed>) = 0 [pid 12185] <... write resumed>) = 4 [pid 12184] <... mmap resumed>) = 0x7f504ff5f000 [pid 12183] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12187] close(3 [pid 12186] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12185] close(3 [pid 12183] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12187] <... close resumed>) = 0 [pid 12187] symlink("/dev/binderfs", "./binderfs" [pid 12185] <... close resumed>) = 0 ./strace-static-x86_64: Process 12188 attached [pid 12184] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12185] symlink("/dev/binderfs", "./binderfs" [pid 12187] <... symlink resumed>) = 0 [pid 12188] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12184] <... mprotect resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12188] <... rseq resumed>) = 0 [pid 12187] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12184] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 12188] set_robust_list(0x7f504ff7f9a0, 24 [pid 12187] <... futex resumed>) = 0 [pid 12185] <... symlink resumed>) = 0 [pid 12183] <... clone3 resumed> => {parent_tid=[1191]}, 88) = 1191 [pid 12188] <... set_robust_list resumed>) = 0 [pid 12187] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12186] <... symlink resumed>) = 0 [pid 12185] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12184] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12183] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12188] rt_sigprocmask(SIG_SETMASK, [], [pid 12187] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12185] <... futex resumed>) = 0 [pid 12184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12187] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12185] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] unlink("./589/blkio.bfq.io_wait_time_recursive" [pid 12188] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12189 attached [pid 12188] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12186] <... openat resumed>) = 3 [pid 12185] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12187] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12183] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12189] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12188] open(".", O_RDONLY [pid 12189] <... rseq resumed>) = 0 [pid 12189] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12185] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12184] <... clone3 resumed> => {parent_tid=[1211]}, 88) = 1211 [pid 12189] rt_sigprocmask(SIG_SETMASK, [], [pid 12188] <... open resumed>) = 3 [pid 12187] <... mmap resumed>) = 0x7f504ff5f000 [pid 12186] write(3, "1000", 4 [pid 12185] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12184] rt_sigprocmask(SIG_SETMASK, [], [pid 12183] <... futex resumed>) = 0 [pid 5047] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12189] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12187] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12186] <... write resumed>) = 4 [pid 12185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12184] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12183] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12189] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12188] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12188] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 12188] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./589/cgroup.net") = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./589" [pid 12185] <... mmap resumed>) = 0x7f504ff5f000 [pid 12186] close(3 [pid 12185] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12187] <... mprotect resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 12185] <... mprotect resumed>) = 0 [pid 12186] <... close resumed>) = 0 [pid 12186] symlink("/dev/binderfs", "./binderfs" [pid 5047] mkdir("./590", 0777 [pid 12187] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12186] <... symlink resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 12185] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12184] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12187] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12184] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12183] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12186] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12183] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12189] <... futex resumed>) = 0 [pid 12186] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12183] <... futex resumed>) = 1 [pid 12183] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12189] open(".", O_RDONLY [pid 12188] <... futex resumed>) = 0 [pid 12187] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12186] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12190 attached ./strace-static-x86_64: Process 12192 attached [pid 12189] <... open resumed>) = 3 [pid 12188] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12185] <... clone3 resumed> => {parent_tid=[1156]}, 88) = 1156 [pid 12187] <... clone3 resumed> => {parent_tid=[1173]}, 88) = 1173 [pid 12192] set_robust_list(0x555556ac56a0, 24 [pid 12188] <... fcntl resumed>) = 0 [pid 12192] <... set_robust_list resumed>) = 0 [pid 12187] rt_sigprocmask(SIG_SETMASK, [], [pid 12186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12185] rt_sigprocmask(SIG_SETMASK, [], [pid 12192] chdir("./590" [pid 12185] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12187] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12187] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12185] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12187] <... futex resumed>) = 0 [pid 12188] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12187] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12185] <... futex resumed>) = 0 [pid 12185] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12188] <... futex resumed>) = 1 [pid 12183] <... futex resumed>) = 0 [pid 12192] <... chdir resumed>) = 0 [pid 12188] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12186] <... mmap resumed>) = 0x7f504ff5f000 [pid 12183] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12190] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12183] <... futex resumed>) = 0 [pid 12189] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12188] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12183] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12190] <... rseq resumed>) = 0 [pid 12189] <... futex resumed>) = 1 [pid 12188] <... openat resumed>) = 4 [pid 12186] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12184] <... futex resumed>) = 0 [pid 12192] <... prctl resumed>) = 0 [pid 12190] set_robust_list(0x7f504ff7f9a0, 24 [pid 12189] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12184] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12192] setpgid(0, 0 [pid 12190] <... set_robust_list resumed>) = 0 [pid 12189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12184] <... futex resumed>) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1182 ./strace-static-x86_64: Process 12191 attached [pid 12192] <... setpgid resumed>) = 0 [pid 12190] rt_sigprocmask(SIG_SETMASK, [], [pid 12189] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12188] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12186] <... mprotect resumed>) = 0 [pid 12184] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12183] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 12192] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12191] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12190] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12189] <... fcntl resumed>) = 0 [pid 12186] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12192] <... symlink resumed>) = 0 [pid 12191] <... rseq resumed>) = 0 [pid 12190] open(".", O_RDONLY [pid 12189] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12191] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12190] <... open resumed>) = 3 [pid 12189] <... futex resumed>) = 1 [pid 12186] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12184] <... futex resumed>) = 0 [pid 12192] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12191] rt_sigprocmask(SIG_SETMASK, [], [pid 12190] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12189] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12184] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12193 attached [pid 12191] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12190] <... futex resumed>) = 1 [pid 12189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12188] +++ killed by SIGIO +++ [pid 12185] <... futex resumed>) = 0 [pid 12184] <... futex resumed>) = 0 [pid 12183] +++ killed by SIGIO +++ [pid 12192] <... symlink resumed>) = 0 [pid 12193] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12192] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12191] open(".", O_RDONLY [pid 12190] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12189] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12186] <... clone3 resumed> => {parent_tid=[1212]}, 88) = 1212 [pid 12185] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12184] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1190, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12193] <... rseq resumed>) = 0 [pid 12192] <... symlink resumed>) = 0 [pid 12191] <... open resumed>) = 3 [pid 12190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12185] <... futex resumed>) = 0 [pid 12193] set_robust_list(0x7f504ff7f9a0, 24 [pid 12192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12190] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12189] <... openat resumed>) = 4 [pid 12186] rt_sigprocmask(SIG_SETMASK, [], [pid 12185] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12193] <... set_robust_list resumed>) = 0 [pid 12192] <... openat resumed>) = 3 [pid 12191] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12190] <... fcntl resumed>) = 0 [pid 12189] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12193] rt_sigprocmask(SIG_SETMASK, [], [pid 12191] <... futex resumed>) = 1 [pid 12190] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12186] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12193] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12191] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12190] <... futex resumed>) = 1 [pid 12187] <... futex resumed>) = 0 [pid 12186] <... futex resumed>) = 0 [pid 12185] <... futex resumed>) = 0 [pid 12184] <... futex resumed>) = ? [pid 5049] umount2("./594", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12190] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12189] +++ killed by SIGIO +++ [pid 12192] write(3, "1000", 4 [pid 12187] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12185] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12186] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12193] open(".", O_RDONLY [pid 12192] <... write resumed>) = 4 [pid 12191] <... futex resumed>) = 0 [pid 12190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12187] <... futex resumed>) = 1 [pid 12192] close(3 [pid 12187] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12192] <... close resumed>) = 0 [pid 12192] symlink("/dev/binderfs", "./binderfs" [pid 12193] <... open resumed>) = 3 [pid 12192] <... symlink resumed>) = 0 [pid 12191] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12190] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12185] <... futex resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12193] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12192] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12191] <... fcntl resumed>) = 0 [pid 12190] <... openat resumed>) = 4 [pid 5049] <... openat resumed>) = 3 [pid 12192] <... futex resumed>) = 0 [pid 12191] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12193] <... futex resumed>) = 1 [pid 12192] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12191] <... futex resumed>) = 1 [pid 12187] <... futex resumed>) = 0 [pid 12186] <... futex resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 12193] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12192] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12191] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12187] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12186] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12191] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12190] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12187] <... futex resumed>) = 0 [pid 12185] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12184] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12191] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12190] <... futex resumed>) = ? [pid 12187] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 12193] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12190] +++ killed by SIGIO +++ [pid 12186] <... futex resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1210, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12192] <... mmap resumed>) = 0x7f504ff5f000 [pid 12193] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12186] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12193] <... fcntl resumed>) = 0 [pid 12192] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12193] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12192] <... mprotect resumed>) = 0 [pid 5050] umount2("./603", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12193] <... futex resumed>) = 1 [pid 12191] <... openat resumed>) = 4 [pid 12186] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12193] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12192] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12186] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] openat(AT_FDCWD, "./603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12193] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12191] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12186] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] umount2("./594/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12187] <... futex resumed>) = ? [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12193] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12192] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12186] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] newfstatat(3, "", [pid 5049] newfstatat(AT_FDCWD, "./594/cgroup.cpu", [pid 12193] <... openat resumed>) = 4 [pid 12192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12185] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./594/cgroup.cpu"./strace-static-x86_64: Process 12194 attached ) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1155, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12194] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5049] umount2("./594/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12194] <... rseq resumed>) = 0 [pid 5045] umount2("./576", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12194] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12194] <... set_robust_list resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./594/binderfs", [pid 12194] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] openat(AT_FDCWD, "./576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12194] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12193] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] getdents64(3, [pid 5045] <... openat resumed>) = 3 [pid 12192] <... clone3 resumed> => {parent_tid=[1183]}, 88) = 1183 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 5049] unlink("./594/binderfs" [pid 12192] rt_sigprocmask(SIG_SETMASK, [], [pid 12186] <... futex resumed>) = ? [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12191] +++ killed by SIGIO +++ [pid 12187] +++ killed by SIGIO +++ [pid 12193] +++ killed by SIGIO +++ [pid 12192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./603/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1172, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12194] <... futex resumed>) = 0 [pid 12192] <... futex resumed>) = 1 [pid 5049] umount2("./594/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12194] open(".", O_RDONLY) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12192] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./594/cgroup", [pid 5050] newfstatat(AT_FDCWD, "./603/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./576/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12194] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./594/cgroup" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12194] <... futex resumed>) = 1 [pid 12194] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12192] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./576/cgroup.cpu", [pid 12192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12192] <... futex resumed>) = 1 [pid 5046] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12194] <... futex resumed>) = 0 [pid 5049] umount2("./594/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12194] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./576/cgroup.cpu" [pid 12194] <... fcntl resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./594/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 12194] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./603/cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12194] <... futex resumed>) = 0 [pid 12194] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] unlink("./594/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./576/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12192] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12186] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(3, "", [pid 12192] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12194] <... futex resumed>) = 0 [pid 12192] <... futex resumed>) = 1 [pid 12192] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1211, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] newfstatat(AT_FDCWD, "./576/binderfs", [pid 5050] umount2("./603/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12194] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./603/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12194] <... openat resumed>) = 4 [pid 5046] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12194] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] umount2("./594/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12192] <... futex resumed>) = ? [pid 5050] unlink("./603/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./604", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 5045] unlink("./576/binderfs" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./594/cgroup.net", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./603/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./594/cgroup.net" [pid 5050] newfstatat(AT_FDCWD, "./603/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./585/cgroup.cpu" [pid 5045] umount2("./576/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(3, "", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] newfstatat(AT_FDCWD, "./576/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] getdents64(3, [pid 5050] unlink("./603/cgroup" [pid 5049] getdents64(3, [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... unlink resumed>) = 0 [pid 5045] unlink("./576/cgroup" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] umount2("./604/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] close(3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./603/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./604/cgroup.cpu", [pid 5050] newfstatat(AT_FDCWD, "./603/blkio.bfq.io_wait_time_recursive", [pid 5049] rmdir("./594" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12194] +++ killed by SIGIO +++ [pid 12192] +++ killed by SIGIO +++ [pid 5046] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./576/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./604/cgroup.cpu" [pid 5050] unlink("./603/blkio.bfq.io_wait_time_recursive" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./595", 0777 [pid 5046] newfstatat(AT_FDCWD, "./585/binderfs", [pid 5045] newfstatat(AT_FDCWD, "./576/blkio.bfq.io_wait_time_recursive", [pid 5051] umount2("./604/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./603/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./576/blkio.bfq.io_wait_time_recursive" [pid 5051] newfstatat(AT_FDCWD, "./604/binderfs", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... mkdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1182, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./603/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./604/binderfs" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] unlink("./585/binderfs" [pid 5045] umount2("./576/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./603/cgroup.net") = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5050] rmdir("./603") = 0 [pid 5050] mkdir("./604", 0777./strace-static-x86_64: Process 12195 attached [pid 5051] umount2("./604/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./576/cgroup.net", [pid 12195] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1192 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12195] <... set_robust_list resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./604/cgroup", [pid 5047] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./585/cgroup", [pid 5045] unlink("./576/cgroup.net" [pid 12195] chdir("./595" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12196 attached [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12196] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1212 [pid 12196] <... set_robust_list resumed>) = 0 [pid 12196] chdir("./604") = 0 [pid 12196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12196] setpgid(0, 0) = 0 [pid 12196] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5051] unlink("./604/cgroup" [pid 12195] <... chdir resumed>) = 0 [pid 12196] <... symlink resumed>) = 0 [pid 12195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5047] getdents64(3, [pid 5046] unlink("./585/cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 12195] <... prctl resumed>) = 0 [pid 12196] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 12196] <... symlink resumed>) = 0 [pid 12195] setpgid(0, 0 [pid 5051] umount2("./604/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12196] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12195] <... setpgid resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12196] <... symlink resumed>) = 0 [pid 12195] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] newfstatat(AT_FDCWD, "./604/blkio.bfq.io_wait_time_recursive", [pid 5047] newfstatat(AT_FDCWD, "./590/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", [pid 5045] close(3 [pid 12196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12196] <... openat resumed>) = 3 [pid 5047] unlink("./590/cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 12196] write(3, "1000", 4) = 4 [pid 12196] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 5051] unlink("./604/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 5045] rmdir("./576" [pid 12196] <... close resumed>) = 0 [pid 12196] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12196] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... rmdir resumed>) = 0 [pid 12196] <... futex resumed>) = 0 [pid 12196] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] <... unlink resumed>) = 0 [pid 12196] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12195] <... symlink resumed>) = 0 [pid 12196] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12196] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12197 attached [pid 12197] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12196] <... clone3 resumed> => {parent_tid=[1213]}, 88) = 1213 [pid 12196] rt_sigprocmask(SIG_SETMASK, [], [pid 12197] <... rseq resumed>) = 0 [pid 12197] set_robust_list(0x7f504ff7f9a0, 24 [pid 12196] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12197] <... set_robust_list resumed>) = 0 [pid 12196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12197] rt_sigprocmask(SIG_SETMASK, [], [pid 12196] <... futex resumed>) = 0 [pid 12197] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12197] open(".", O_RDONLY [pid 12196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12195] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] umount2("./604/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./577", 0777 [pid 12197] <... open resumed>) = 3 [pid 12195] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12197] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./590/binderfs", [pid 12197] <... futex resumed>) = 1 [pid 12196] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12197] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12197] <... fcntl resumed>) = 0 [pid 12196] <... futex resumed>) = 0 [pid 5047] unlink("./590/binderfs" [pid 12197] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12195] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] newfstatat(AT_FDCWD, "./604/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 12197] <... futex resumed>) = 0 [pid 12196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(AT_FDCWD, "./585/cgroup.net", [pid 12196] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12197] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12196] <... futex resumed>) = 0 [pid 5051] unlink("./604/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12197] <... openat resumed>) = 4 [pid 12195] <... symlink resumed>) = 0 [pid 5047] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./585/cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./590/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./590/cgroup") = 0 [pid 12197] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12196] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = ? [pid 12197] +++ killed by SIGIO +++ [pid 5047] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] getdents64(3, [pid 5046] getdents64(3, [pid 5047] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 12195] <... openat resumed>) = 3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5046] close(3./strace-static-x86_64: Process 12198 attached ) = 0 [pid 12198] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... close resumed>) = 0 [pid 5046] rmdir("./585" [pid 12198] <... set_robust_list resumed>) = 0 [pid 5047] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12198] chdir("./577") = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] <... rmdir resumed>) = 0 [pid 12198] <... prctl resumed>) = 0 [pid 12195] write(3, "1000", 4 [pid 5051] rmdir("./604" [pid 5047] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1157 [pid 12198] setpgid(0, 0 [pid 12195] <... write resumed>) = 4 [pid 12198] <... setpgid resumed>) = 0 [pid 12195] close(3 [pid 5051] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12195] <... close resumed>) = 0 [pid 5046] mkdir("./586", 0777 [pid 12195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12195] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] mkdir("./605", 0777 [pid 12195] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 12195] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12198] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12196] +++ killed by SIGIO +++ [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] unlink("./590/cgroup.net" [pid 12195] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1212, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12198] <... symlink resumed>) = 0 [pid 12195] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... unlink resumed>) = 0 [pid 12195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] getdents64(3, [pid 12195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12199 attached [pid 12195] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1174 [pid 5047] close(3 [pid 12195] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./590" [pid 12195] <... mprotect resumed>) = 0 [pid 12199] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12199] chdir("./586") = 0 [pid 12199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 12198] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12199] setpgid(0, 0) = 0 [pid 12199] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] umount2("./604", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12195] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12195] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] openat(AT_FDCWD, "./604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12199] <... symlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5050] newfstatat(3, "", [pid 12199] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 12198] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12195] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] mkdir("./591", 0777./strace-static-x86_64: Process 12200 attached [pid 12199] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] getdents64(3, [pid 12200] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12199] <... symlink resumed>) = 0 [pid 12198] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12200] <... rseq resumed>) = 0 [pid 12200] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12200] <... set_robust_list resumed>) = 0 [pid 12200] rt_sigprocmask(SIG_SETMASK, [], [pid 12199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12200] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12200] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12199] <... openat resumed>) = 3 [pid 12195] <... clone3 resumed> => {parent_tid=[1193]}, 88) = 1193 [pid 5050] umount2("./604/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12198] <... symlink resumed>) = 0 [pid 12195] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12199] write(3, "1000", 4) = 4 [pid 12199] close(3) = 0 [pid 12199] symlink("/dev/binderfs", "./binderfs" [pid 5050] newfstatat(AT_FDCWD, "./604/cgroup.cpu", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1213 ./strace-static-x86_64: Process 12201 attached [pid 12199] <... symlink resumed>) = 0 [pid 12199] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12198] <... openat resumed>) = 3 [pid 12195] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12201] set_robust_list(0x555556ac56a0, 24 [pid 12200] <... futex resumed>) = 0 [pid 12199] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12198] write(3, "1000", 4 [pid 12195] <... futex resumed>) = 1 [pid 12201] <... set_robust_list resumed>) = 0 [pid 12200] open(".", O_RDONLY [pid 12199] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12195] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12201] chdir("./605" [pid 12200] <... open resumed>) = 3 [pid 12199] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12198] <... write resumed>) = 4 [pid 5050] unlink("./604/cgroup.cpu" [pid 12199] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5050] <... unlink resumed>) = 0 [pid 12201] <... chdir resumed>) = 0 [pid 12200] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12199] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12200] <... futex resumed>) = 1 [pid 12199] <... mprotect resumed>) = 0 [pid 12195] <... futex resumed>) = 0 [pid 12200] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12195] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12201] <... prctl resumed>) = 0 [pid 12200] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12199] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12195] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12202 attached [pid 12201] setpgid(0, 0 [pid 12200] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12198] close(3 [pid 5050] umount2("./604/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12202] set_robust_list(0x555556ac56a0, 24 [pid 12201] <... setpgid resumed>) = 0 [pid 12200] <... fcntl resumed>) = 0 [pid 12199] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12198] <... close resumed>) = 0 [pid 12195] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12202] <... set_robust_list resumed>) = 0 [pid 12200] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12198] symlink("/dev/binderfs", "./binderfs" [pid 12199] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12202] chdir("./591" [pid 12201] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12200] <... futex resumed>) = 0 [pid 12198] <... symlink resumed>) = 0 [pid 12195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] newfstatat(AT_FDCWD, "./604/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./604/binderfs" [pid 12195] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12200] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12198] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12195] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12203 attached [pid 12198] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12203] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12203] set_robust_list(0x7f504ff7f9a0, 24 [pid 12198] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] umount2("./604/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12200] <... openat resumed>) = 4 [pid 12198] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12203] <... set_robust_list resumed>) = 0 [pid 12198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12203] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12203] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12202] <... chdir resumed>) = 0 [pid 12201] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./604/cgroup", [pid 12202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12201] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12199] <... clone3 resumed> => {parent_tid=[1175]}, 88) = 1175 [pid 12198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12195] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12200] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12202] <... prctl resumed>) = 0 [pid 12199] rt_sigprocmask(SIG_SETMASK, [], [pid 12198] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1184 [pid 12202] setpgid(0, 0 [pid 12199] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12198] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./604/cgroup" [pid 12202] <... setpgid resumed>) = 0 [pid 12199] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12198] <... mprotect resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12202] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12201] <... symlink resumed>) = 0 [pid 12200] <... futex resumed>) = ? [pid 12199] <... futex resumed>) = 1 [pid 12203] <... futex resumed>) = 0 [pid 5050] umount2("./604/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12203] open(".", O_RDONLY [pid 12198] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12203] <... open resumed>) = 3 [pid 12198] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./604/blkio.bfq.io_wait_time_recursive", [pid 12203] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12203] <... futex resumed>) = 0 [pid 12203] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] unlink("./604/blkio.bfq.io_wait_time_recursive" [pid 12201] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12204 attached [pid 12198] <... clone3 resumed> => {parent_tid=[1158]}, 88) = 1158 [pid 12204] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12198] rt_sigprocmask(SIG_SETMASK, [], [pid 12204] <... rseq resumed>) = 0 [pid 12201] <... symlink resumed>) = 0 [pid 12199] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12204] set_robust_list(0x7f504ff7f9a0, 24 [pid 12198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] umount2("./604/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12204] <... set_robust_list resumed>) = 0 [pid 12202] <... symlink resumed>) = 0 [pid 12199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12198] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12204] rt_sigprocmask(SIG_SETMASK, [], [pid 12198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./604/cgroup.net", [pid 12204] open(".", O_RDONLY [pid 12199] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12204] <... open resumed>) = 3 [pid 12203] <... futex resumed>) = 0 [pid 12202] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12199] <... futex resumed>) = 1 [pid 12204] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12203] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] unlink("./604/cgroup.net" [pid 12204] <... futex resumed>) = 1 [pid 12203] <... fcntl resumed>) = 0 [pid 12201] <... openat resumed>) = 3 [pid 12199] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12198] <... futex resumed>) = 0 [pid 12204] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12203] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12202] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12204] <... fcntl resumed>) = 0 [pid 12203] <... futex resumed>) = 0 [pid 12198] <... futex resumed>) = 0 [pid 12204] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12203] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12199] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 12204] <... futex resumed>) = 0 [pid 12203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12198] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12204] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12203] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12198] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12201] write(3, "1000", 4 [pid 12200] +++ killed by SIGIO +++ [pid 12202] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12199] <... futex resumed>) = 0 [pid 12195] +++ killed by SIGIO +++ [pid 12201] <... write resumed>) = 4 [pid 12203] <... openat resumed>) = 4 [pid 12202] <... symlink resumed>) = 0 [pid 12201] close(3 [pid 12199] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1192, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12201] <... close resumed>) = 0 [pid 12199] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12204] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12203] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12201] symlink("/dev/binderfs", "./binderfs" [pid 12199] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12198] <... futex resumed>) = 0 [pid 5050] close(3 [pid 12204] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12198] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./595", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12202] <... openat resumed>) = 3 [pid 5049] <... openat resumed>) = 3 [pid 5049] newfstatat(3, "", [pid 12201] <... symlink resumed>) = 0 [pid 12203] <... futex resumed>) = ? [pid 12203] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./595/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./595/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./595/cgroup.cpu") = 0 [pid 5049] umount2("./595/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./595/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./595/binderfs") = 0 [pid 5049] umount2("./595/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./595/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./595/cgroup" [pid 5050] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./595/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./595/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./595/blkio.bfq.io_wait_time_recursive") = 0 [pid 5049] umount2("./595/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./595/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./595/cgroup.net" [pid 12202] write(3, "1000", 4 [pid 12201] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3) = 0 [pid 5049] rmdir("./595" [pid 12204] <... openat resumed>) = 4 [pid 12198] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12204] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] rmdir("./604" [pid 12202] <... write resumed>) = 4 [pid 12201] <... futex resumed>) = 0 [pid 12202] close(3 [pid 5049] <... rmdir resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 12202] <... close resumed>) = 0 [pid 12201] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12202] symlink("/dev/binderfs", "./binderfs" [pid 12204] +++ killed by SIGIO +++ [pid 5049] mkdir("./596", 0777 [pid 12202] <... symlink resumed>) = 0 [pid 12201] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12201] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12202] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12201] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12201] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12202] <... futex resumed>) = 0 [pid 12201] <... mmap resumed>) = 0x7f504ff5f000 [pid 12202] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12201] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12201] <... mprotect resumed>) = 0 [pid 12202] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12202] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] mkdir("./605", 0777 [pid 5049] <... mkdir resumed>) = 0 [pid 12202] <... mprotect resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... mkdir resumed>) = 0 [pid 12202] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12201] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 12205 attached [pid 12202] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12201] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1194 [pid 12205] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12205] chdir("./596") = 0 [pid 12205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12205] setpgid(0, 0 [pid 12202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12201] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12198] +++ killed by SIGIO +++ [pid 12205] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 12207 attached [pid 12205] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12199] +++ killed by SIGIO +++ [pid 12202] <... clone3 resumed> => {parent_tid=[1185]}, 88) = 1185 [pid 12202] rt_sigprocmask(SIG_SETMASK, [], [pid 12201] <... clone3 resumed> => {parent_tid=[1214]}, 88) = 1214 [pid 12201] rt_sigprocmask(SIG_SETMASK, [], [pid 12202] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12205] <... symlink resumed>) = 0 [pid 12205] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1174, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12205] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12202] <... futex resumed>) = 0 [pid 12205] <... symlink resumed>) = 0 [pid 12202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12201] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12207] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12201] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12208 attached ./strace-static-x86_64: Process 12206 attached [pid 12207] <... rseq resumed>) = 0 [pid 12205] <... openat resumed>) = 3 [pid 12201] <... futex resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1214 [pid 5046] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1157, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12208] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12207] set_robust_list(0x7f504ff7f9a0, 24 [pid 12206] set_robust_list(0x555556ac56a0, 24 [pid 12205] write(3, "1000", 4 [pid 12201] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12208] <... rseq resumed>) = 0 [pid 12207] <... set_robust_list resumed>) = 0 [pid 12206] <... set_robust_list resumed>) = 0 [pid 12205] <... write resumed>) = 4 [pid 5046] <... openat resumed>) = 3 [pid 12208] set_robust_list(0x7f504ff7f9a0, 24 [pid 12207] rt_sigprocmask(SIG_SETMASK, [], [pid 12206] chdir("./605" [pid 12205] close(3 [pid 5046] newfstatat(3, "", [pid 5045] umount2("./577", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12207] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12206] <... chdir resumed>) = 0 [pid 12205] <... close resumed>) = 0 [pid 12208] <... set_robust_list resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12207] open(".", O_RDONLY [pid 12205] symlink("/dev/binderfs", "./binderfs" [pid 5046] getdents64(3, [pid 5045] openat(AT_FDCWD, "./577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12208] rt_sigprocmask(SIG_SETMASK, [], [pid 12207] <... open resumed>) = 3 [pid 12206] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5045] <... openat resumed>) = 3 [pid 12208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(3, "", [pid 12208] open(".", O_RDONLY [pid 12206] <... prctl resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12208] <... open resumed>) = 3 [pid 12206] setpgid(0, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12206] <... setpgid resumed>) = 0 [pid 5045] umount2("./577/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./577/cgroup.cpu", [pid 12206] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12207] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12208] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12207] <... futex resumed>) = 1 [pid 12206] <... symlink resumed>) = 0 [pid 12205] <... symlink resumed>) = 0 [pid 12202] <... futex resumed>) = 0 [pid 5046] unlink("./586/cgroup.cpu" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12208] <... futex resumed>) = 1 [pid 12207] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12206] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12201] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12208] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12205] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12202] <... futex resumed>) = 0 [pid 12201] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12201] <... futex resumed>) = 0 [pid 5045] unlink("./577/cgroup.cpu" [pid 12208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12207] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12206] <... symlink resumed>) = 0 [pid 12205] <... futex resumed>) = 0 [pid 12201] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 12208] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12207] <... fcntl resumed>) = 0 [pid 12206] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12205] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12207] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12205] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12207] <... futex resumed>) = 1 [pid 12205] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12202] <... futex resumed>) = 0 [pid 5045] umount2("./577/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./586/binderfs", [pid 12207] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12205] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12202] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12202] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./577/binderfs", [pid 12202] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12206] <... symlink resumed>) = 0 [pid 12205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./577/binderfs" [pid 12208] <... fcntl resumed>) = 0 [pid 12207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12205] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./586/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 12208] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12207] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12205] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12208] <... futex resumed>) = 1 [pid 12201] <... futex resumed>) = 0 [pid 12201] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./577/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12201] <... futex resumed>) = 0 [pid 12201] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./577/cgroup", [pid 12207] <... openat resumed>) = 4 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./577/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12205] <... mprotect resumed>) = 0 [pid 5045] umount2("./577/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12206] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./577/blkio.bfq.io_wait_time_recursive", [pid 12208] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12206] write(3, "1000", 4 [pid 12205] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12206] <... write resumed>) = 4 [pid 5045] unlink("./577/blkio.bfq.io_wait_time_recursive" [pid 12208] <... openat resumed>) = 4 [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12207] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12205] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./577/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./577/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./577/cgroup.net" [pid 12208] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12206] close(3 [pid 12205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] newfstatat(AT_FDCWD, "./586/cgroup", [pid 12202] <... futex resumed>) = ? [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] getdents64(3, [pid 5046] unlink("./586/cgroup" [pid 12201] <... futex resumed>) = ? [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12208] +++ killed by SIGIO +++ [pid 12206] <... close resumed>) = 0 [pid 12206] symlink("/dev/binderfs", "./binderfs" [pid 12205] <... clone3 resumed> => {parent_tid=[1195]}, 88) = 1195 [pid 5046] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12206] <... symlink resumed>) = 0 [pid 12205] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 12205] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12205] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12206] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12205] <... futex resumed>) = 0 [pid 12206] <... futex resumed>) = 0 [pid 12205] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 12206] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 12206] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12206] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5046] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 12206] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... close resumed>) = 0 [pid 12206] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12206] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 12209 attached [pid 5046] unlink("./586/cgroup.net" [pid 5045] rmdir("./577" [pid 12206] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... unlink resumed>) = 0 [pid 12206] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12209] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12206] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12209] <... rseq resumed>) = 0 [pid 5045] mkdir("./578", 0777 [pid 12209] set_robust_list(0x7f504ff7f9a0, 24./strace-static-x86_64: Process 12210 attached ) = 0 [pid 12206] <... clone3 resumed> => {parent_tid=[1215]}, 88) = 1215 [pid 5046] getdents64(3, [pid 12210] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12209] rt_sigprocmask(SIG_SETMASK, [], [pid 12206] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12210] <... rseq resumed>) = 0 [pid 12209] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12206] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12210] set_robust_list(0x7f504ff7f9a0, 24 [pid 12206] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] close(3 [pid 12210] <... set_robust_list resumed>) = 0 [pid 12209] open(".", O_RDONLY [pid 12206] <... futex resumed>) = 0 [pid 5046] <... close resumed>) = 0 [pid 12210] rt_sigprocmask(SIG_SETMASK, [], [pid 12206] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... mkdir resumed>) = 0 [pid 12210] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] rmdir("./586" [pid 12210] open(".", O_RDONLY) = 3 [pid 5046] <... rmdir resumed>) = 0 [pid 12210] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12209] <... open resumed>) = 3 [pid 12210] <... futex resumed>) = 1 [pid 12210] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12206] <... futex resumed>) = 0 [pid 12206] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] mkdir("./587", 0777 [pid 12210] <... futex resumed>) = 0 [pid 12206] <... futex resumed>) = 1 [pid 12210] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12206] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... mkdir resumed>) = 0 [pid 12210] <... fcntl resumed>) = 0 [pid 12210] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12210] <... futex resumed>) = 0 [pid 12206] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12210] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12206] <... futex resumed>) = 0 [pid 12210] <... openat resumed>) = 4 [pid 12209] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12201] +++ killed by SIGIO +++ [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12209] <... futex resumed>) = 1 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1213, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12209] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] umount2("./605", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12205] <... futex resumed>) = 0 [pid 12205] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12206] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12205] <... futex resumed>) = 0 [pid 12205] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12210] +++ killed by SIGIO +++ [pid 12209] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12209] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12209] <... fcntl resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12209] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12207] +++ killed by SIGIO +++ [pid 12205] <... futex resumed>) = 0 [pid 12202] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 12209] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12205] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1184, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- ./strace-static-x86_64: Process 12211 attached [pid 12209] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12205] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1159 ./strace-static-x86_64: Process 12212 attached [pid 12211] set_robust_list(0x555556ac56a0, 24 [pid 12209] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12205] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1176 [pid 12212] set_robust_list(0x555556ac56a0, 24 [pid 12211] <... set_robust_list resumed>) = 0 [pid 12206] +++ killed by SIGIO +++ [pid 12212] <... set_robust_list resumed>) = 0 [pid 12212] chdir("./587" [pid 12209] <... openat resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1214, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12212] <... chdir resumed>) = 0 [pid 12211] chdir("./578" [pid 12209] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./605/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12211] <... chdir resumed>) = 0 [pid 12205] <... futex resumed>) = ? [pid 5050] <... restart_syscall resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12212] <... prctl resumed>) = 0 [pid 12211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] setpgid(0, 0 [pid 12211] <... prctl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./605/cgroup.cpu", [pid 5047] <... openat resumed>) = 3 [pid 12212] <... setpgid resumed>) = 0 [pid 12211] setpgid(0, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12212] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12211] <... setpgid resumed>) = 0 [pid 5051] unlink("./605/cgroup.cpu" [pid 5047] newfstatat(3, "", [pid 12212] <... symlink resumed>) = 0 [pid 12211] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./605", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] umount2("./605/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 12212] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] newfstatat(AT_FDCWD, "./605/binderfs", [pid 5050] openat(AT_FDCWD, "./605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12212] <... symlink resumed>) = 0 [pid 12211] <... symlink resumed>) = 0 [pid 12209] +++ killed by SIGIO +++ [pid 12205] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12212] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12211] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5051] unlink("./605/binderfs" [pid 5050] newfstatat(3, "", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1194, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12211] <... symlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 12212] <... symlink resumed>) = 0 [pid 12211] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] umount2("./605/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5049] umount2("./596", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12211] <... symlink resumed>) = 0 [pid 5047] unlink("./591/cgroup.cpu" [pid 12211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./605/cgroup", [pid 5050] umount2("./605/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 12212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12211] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./605/cgroup.cpu", [pid 5049] newfstatat(3, "", [pid 5047] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12212] <... openat resumed>) = 3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./605/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] write(3, "1000", 4 [pid 12211] write(3, "1000", 4 [pid 12212] <... write resumed>) = 4 [pid 12211] <... write resumed>) = 4 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./605/cgroup.cpu" [pid 5049] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./591/binderfs", [pid 12212] close(3 [pid 12211] close(3 [pid 5051] umount2("./605/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12211] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12212] <... close resumed>) = 0 [pid 12211] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./605/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./605/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./596/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./596/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./596/cgroup.cpu") = 0 [pid 5049] umount2("./596/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12211] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./596/binderfs", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12212] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./591/binderfs" [pid 5051] unlink("./605/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./605/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./596/binderfs") = 0 [pid 12211] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./605/binderfs" [pid 5049] umount2("./596/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 12211] <... futex resumed>) = 0 [pid 12212] <... symlink resumed>) = 0 [pid 12211] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./605/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./605/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./591/cgroup", [pid 12212] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12211] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./605/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./596/cgroup", [pid 12212] <... futex resumed>) = 0 [pid 12211] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12211] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./605/cgroup.net", [pid 5050] unlink("./605/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12212] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./596/cgroup" [pid 5047] unlink("./591/cgroup" [pid 12212] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12211] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./605/cgroup.net" [pid 5050] umount2("./605/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 12212] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12211] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./605/blkio.bfq.io_wait_time_recursive", [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12211] <... mprotect resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] unlink("./605/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./596/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] <... mmap resumed>) = 0x7f504ff5f000 [pid 12211] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5051] close(3 [pid 12212] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12211] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./605/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 12211] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./605/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 12212] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./605/cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./596/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12212] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./591/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12213 attached [pid 5050] getdents64(3, [pid 12213] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12213] <... rseq resumed>) = 0 [pid 5051] rmdir("./605" [pid 5047] unlink("./591/cgroup.net" [pid 5049] unlink("./596/blkio.bfq.io_wait_time_recursive" [pid 12213] set_robust_list(0x7f504ff7f9a0, 24 [pid 12212] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12211] <... clone3 resumed> => {parent_tid=[1160]}, 88) = 1160 [pid 5050] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 12213] <... set_robust_list resumed>) = 0 [pid 12212] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12211] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... close resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12213] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 12214 attached [pid 12211] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12213] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12214] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12213] open(".", O_RDONLY [pid 12212] <... clone3 resumed> => {parent_tid=[1177]}, 88) = 1177 [pid 12211] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] rmdir("./605" [pid 5049] umount2("./596/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 12214] <... rseq resumed>) = 0 [pid 12211] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12212] rt_sigprocmask(SIG_SETMASK, [], [pid 12211] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./596/cgroup.net", [pid 12212] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] mkdir("./606", 0777 [pid 12212] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12214] set_robust_list(0x7f504ff7f9a0, 24 [pid 12213] <... open resumed>) = 3 [pid 12212] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12214] <... set_robust_list resumed>) = 0 [pid 12213] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12212] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12214] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] unlink("./596/cgroup.net" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12214] open(".", O_RDONLY) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 12213] <... futex resumed>) = 1 [pid 5047] close(3 [pid 12213] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] mkdir("./606", 0777 [pid 5047] <... close resumed>) = 0 [pid 12214] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] rmdir("./591") = 0 [pid 12214] <... futex resumed>) = 1 [pid 12214] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] getdents64(3, ./strace-static-x86_64: Process 12215 attached [pid 12212] <... futex resumed>) = 0 [pid 12211] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] mkdir("./592", 0777 [pid 12212] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] close(3 [pid 12212] <... futex resumed>) = 1 [pid 12214] <... futex resumed>) = 0 [pid 12214] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12214] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12214] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1216 [pid 5047] <... mkdir resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1215 [pid 5049] rmdir("./596" [pid 12212] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12216 attached [pid 12216] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12215] set_robust_list(0x555556ac56a0, 24 [pid 12212] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12215] <... set_robust_list resumed>) = 0 [pid 12212] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12211] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12216] chdir("./606" [pid 12215] chdir("./606" [pid 12214] <... futex resumed>) = 0 [pid 12213] <... futex resumed>) = 0 [pid 12212] <... futex resumed>) = 1 [pid 12211] <... futex resumed>) = 1 [pid 12216] <... chdir resumed>) = 0 [pid 12215] <... chdir resumed>) = 0 [pid 12214] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12213] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12212] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12211] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] mkdir("./597", 0777 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12215] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12214] <... openat resumed>) = 4 [pid 12213] <... fcntl resumed>) = 0 [pid 12216] <... prctl resumed>) = 0 [pid 12214] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12213] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12216] setpgid(0, 0 [pid 12213] <... futex resumed>) = 1 [pid 12216] <... setpgid resumed>) = 0 [pid 12214] +++ killed by SIGIO +++ [pid 12213] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12216] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12215] <... prctl resumed>) = 0 [pid 12212] <... futex resumed>) = ? [pid 12211] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12216] <... symlink resumed>) = 0 [pid 12216] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu") = 0 [pid 12216] symlink("/syzcgroup/net/syz4", "./cgroup.net") = 0 [pid 12216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12216] write(3, "1000", 4) = 4 [pid 12216] close(3) = 0 [pid 12216] symlink("/dev/binderfs", "./binderfs" [pid 12215] setpgid(0, 0 [pid 12211] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12217 attached [pid 12215] <... setpgid resumed>) = 0 [pid 12213] <... futex resumed>) = 0 [pid 12211] <... futex resumed>) = 1 [pid 12216] <... symlink resumed>) = 0 [pid 12213] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12211] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12217] set_robust_list(0x555556ac56a0, 24 [pid 12216] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12215] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12213] <... openat resumed>) = 4 [pid 12216] <... futex resumed>) = 0 [pid 12216] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12217] <... set_robust_list resumed>) = 0 [pid 12216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12212] +++ killed by SIGIO +++ [pid 12211] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1176, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12211] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12217] chdir("./592") = 0 [pid 12217] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12215] <... symlink resumed>) = 0 [pid 12217] <... prctl resumed>) = 0 [pid 12217] setpgid(0, 0) = 0 [pid 5046] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12217] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12216] <... mmap resumed>) = 0x7f504ff5f000 [pid 12215] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12216] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12218 attached ) = 0 [pid 12215] <... symlink resumed>) = 0 [pid 12213] +++ killed by SIGIO +++ [pid 12211] +++ killed by SIGIO +++ [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1196 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1186 [pid 5046] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12218] set_robust_list(0x555556ac56a0, 24 [pid 12217] <... symlink resumed>) = 0 [pid 12215] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5046] <... openat resumed>) = 3 [pid 12218] <... set_robust_list resumed>) = 0 [pid 12217] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12216] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12215] <... symlink resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1159, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12218] chdir("./597" [pid 12216] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] newfstatat(3, "", [pid 12218] <... chdir resumed>) = 0 [pid 12217] <... symlink resumed>) = 0 [pid 12216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12218] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12215] <... openat resumed>) = 3 [pid 12218] <... prctl resumed>) = 0 [pid 12218] setpgid(0, 0) = 0 [pid 12215] write(3, "1000", 4 [pid 12218] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12215] <... write resumed>) = 4 ./strace-static-x86_64: Process 12219 attached [pid 12218] <... symlink resumed>) = 0 [pid 12217] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12216] <... clone3 resumed> => {parent_tid=[1217]}, 88) = 1217 [pid 12215] close(3 [pid 5046] getdents64(3, [pid 12219] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12216] rt_sigprocmask(SIG_SETMASK, [], [pid 12215] <... close resumed>) = 0 [pid 12219] <... rseq resumed>) = 0 [pid 12216] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12218] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12215] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./578", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12219] set_robust_list(0x7f504ff7f9a0, 24 [pid 12218] <... symlink resumed>) = 0 [pid 12216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12215] <... symlink resumed>) = 0 [pid 12217] <... symlink resumed>) = 0 [pid 5046] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12216] <... futex resumed>) = 0 [pid 12219] <... set_robust_list resumed>) = 0 [pid 12218] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12215] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12219] rt_sigprocmask(SIG_SETMASK, [], [pid 12218] <... symlink resumed>) = 0 [pid 12215] <... futex resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 12215] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12219] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12215] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12219] open(".", O_RDONLY [pid 12217] <... openat resumed>) = 3 [pid 12215] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 12218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12215] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12218] <... openat resumed>) = 3 [pid 12217] write(3, "1000", 4 [pid 12215] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 12219] <... open resumed>) = 3 [pid 12217] <... write resumed>) = 4 [pid 12215] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] unlink("./587/cgroup.cpu" [pid 12218] write(3, "1000", 4 [pid 12217] close(3 [pid 12215] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12219] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12218] <... write resumed>) = 4 [pid 12217] <... close resumed>) = 0 [pid 12215] <... mprotect resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12218] close(3 [pid 12215] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12218] <... close resumed>) = 0 [pid 12215] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12218] symlink("/dev/binderfs", "./binderfs" [pid 12215] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12219] <... futex resumed>) = 1 [pid 12216] <... futex resumed>) = 0 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 12220 attached [pid 12219] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12218] <... symlink resumed>) = 0 [pid 12217] symlink("/dev/binderfs", "./binderfs" [pid 12216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12215] <... clone3 resumed> => {parent_tid=[1216]}, 88) = 1216 [pid 5046] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12220] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12218] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12220] <... rseq resumed>) = 0 [pid 12219] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12218] <... futex resumed>) = 0 [pid 12217] <... symlink resumed>) = 0 [pid 12216] <... futex resumed>) = 0 [pid 12215] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./578/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12220] set_robust_list(0x7f504ff7f9a0, 24 [pid 12219] <... fcntl resumed>) = 0 [pid 12218] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12217] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12215] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./587/binderfs", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12220] <... set_robust_list resumed>) = 0 [pid 12219] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12218] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12217] <... futex resumed>) = 0 [pid 12216] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./578/cgroup.cpu", [pid 12220] rt_sigprocmask(SIG_SETMASK, [], [pid 12219] <... futex resumed>) = 0 [pid 12217] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12216] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12219] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12217] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12216] <... futex resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12220] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12218] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12216] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12215] <... futex resumed>) = 0 [pid 5046] unlink("./587/binderfs" [pid 5045] unlink("./578/cgroup.cpu" [pid 12220] open(".", O_RDONLY [pid 12218] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12215] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12220] <... open resumed>) = 3 [pid 12219] <... openat resumed>) = 4 [pid 12218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12217] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] <... unlink resumed>) = 0 [pid 12220] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12218] <... mmap resumed>) = 0x7f504ff5f000 [pid 12217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12216] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12219] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... unlink resumed>) = 0 [pid 5045] umount2("./578/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12220] <... futex resumed>) = 1 [pid 12218] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12216] ???( [pid 12215] <... futex resumed>) = 0 [pid 5046] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12220] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12218] <... mprotect resumed>) = 0 [pid 12217] <... mmap resumed>) = 0x7f504ff5f000 [pid 12216] <... ??? resumed>) = ? [pid 12215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./578/binderfs", [pid 12220] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12219] +++ killed by SIGIO +++ [pid 12218] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12217] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12215] <... futex resumed>) = 0 [pid 12220] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12217] <... mprotect resumed>) = 0 [pid 12215] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./587/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12220] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12218] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12220] <... futex resumed>) = 0 [pid 12218] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12217] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12215] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12220] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] unlink("./578/binderfs" [pid 12220] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12215] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12220] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12215] <... futex resumed>) = 0 [pid 12220] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12221 attached [pid 12218] <... clone3 resumed> => {parent_tid=[1197]}, 88) = 1197 [pid 12221] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12218] rt_sigprocmask(SIG_SETMASK, [], [pid 12221] <... rseq resumed>) = 0 [pid 12218] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12221] set_robust_list(0x7f504ff7f9a0, 24 [pid 12218] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 12221] <... set_robust_list resumed>) = 0 [pid 12218] <... futex resumed>) = 0 [pid 12221] rt_sigprocmask(SIG_SETMASK, [], [pid 12218] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12221] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12221] open(".", O_RDONLY [pid 12220] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12215] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] unlink("./587/cgroup" [pid 12221] <... open resumed>) = 3 [pid 12217] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] umount2("./578/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12220] <... futex resumed>) = ? [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12221] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12220] +++ killed by SIGIO +++ [pid 12217] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./578/cgroup", ./strace-static-x86_64: Process 12222 attached [pid 12221] <... futex resumed>) = 1 [pid 12218] <... futex resumed>) = 0 [pid 5046] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12221] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12218] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12217] <... clone3 resumed> => {parent_tid=[1187]}, 88) = 1187 [pid 12216] +++ killed by SIGIO +++ [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./578/cgroup" [pid 12222] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12221] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12217] rt_sigprocmask(SIG_SETMASK, [], [pid 12222] <... rseq resumed>) = 0 [pid 12221] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12218] <... futex resumed>) = 0 [pid 12222] set_robust_list(0x7f504ff7f9a0, 24 [pid 12221] <... fcntl resumed>) = 0 [pid 12218] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1216, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12222] <... set_robust_list resumed>) = 0 [pid 12221] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12218] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5046] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", [pid 12222] rt_sigprocmask(SIG_SETMASK, [], [pid 12221] <... futex resumed>) = 0 [pid 12218] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12217] <... futex resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 5045] umount2("./578/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12221] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12218] <... futex resumed>) = 0 [pid 12215] +++ killed by SIGIO +++ [pid 12217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12222] open(".", O_RDONLY [pid 12221] <... openat resumed>) = 4 [pid 12218] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1215, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12222] <... open resumed>) = 3 [pid 5050] umount2("./606", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./578/blkio.bfq.io_wait_time_recursive", [pid 12222] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12221] +++ killed by SIGIO +++ [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12222] <... futex resumed>) = 1 [pid 12217] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12222] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... openat resumed>) = 3 [pid 5045] unlink("./578/blkio.bfq.io_wait_time_recursive" [pid 12217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./606", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5046] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 12217] <... futex resumed>) = 1 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12222] <... futex resumed>) = 0 [pid 12218] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./578/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12222] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] openat(AT_FDCWD, "./606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1196, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12222] <... fcntl resumed>) = 0 [pid 5051] <... openat resumed>) = 3 [pid 12222] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 12222] <... futex resumed>) = 1 [pid 12217] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12222] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12217] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./578/cgroup.net", [pid 12222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12217] <... futex resumed>) = 0 [pid 12222] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12217] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./606/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./587/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./606/cgroup.cpu", [pid 5046] unlink("./587/cgroup.net" [pid 12222] <... openat resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12217] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./597", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12222] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12217] restart_syscall(<... resuming interrupted futex ...> [pid 5051] umount2("./606/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] unlink("./606/cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./578/cgroup.net" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] openat(AT_FDCWD, "./597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./606/cgroup.cpu", [pid 5050] umount2("./606/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(3, "", [pid 12217] <... restart_syscall resumed>) = ? [pid 5046] close(3 [pid 5045] getdents64(3, [pid 5051] unlink("./606/cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./606/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12222] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5046] <... close resumed>) = 0 [pid 5045] close(3 [pid 5050] unlink("./606/binderfs" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] rmdir("./587" [pid 5045] <... close resumed>) = 0 [pid 5051] umount2("./606/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./597/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./578" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./597/cgroup.cpu", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./597/cgroup.cpu" [pid 5046] mkdir("./588", 0777 [pid 5051] newfstatat(AT_FDCWD, "./606/binderfs", [pid 5049] <... unlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./606/binderfs" [pid 5045] mkdir("./579", 0777 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./606/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./597/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./597/binderfs", [pid 5051] umount2("./606/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./606/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./606/cgroup" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./606/cgroup", [pid 5049] unlink("./597/binderfs") = 0 [pid 5049] umount2("./597/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./597/cgroup", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./606/cgroup" [pid 5049] unlink("./597/cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5051] umount2("./606/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./606/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./597/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./606/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12224 attached [pid 12217] +++ killed by SIGIO +++ [pid 5051] unlink("./606/blkio.bfq.io_wait_time_recursive" [pid 5049] newfstatat(AT_FDCWD, "./597/blkio.bfq.io_wait_time_recursive", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12224] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./606/blkio.bfq.io_wait_time_recursive", [pid 5049] unlink("./597/blkio.bfq.io_wait_time_recursive" [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1161 [pid 12224] <... set_robust_list resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1186, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12224] chdir("./579" [pid 5051] umount2("./606/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12223 attached [pid 12224] <... chdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./606/blkio.bfq.io_wait_time_recursive" [pid 5049] umount2("./597/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1178 [pid 12224] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12223] set_robust_list(0x555556ac56a0, 24 [pid 5051] newfstatat(AT_FDCWD, "./606/cgroup.net", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12224] <... prctl resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12224] setpgid(0, 0 [pid 12223] <... set_robust_list resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./597/cgroup.net", [pid 12224] <... setpgid resumed>) = 0 [pid 12223] chdir("./588" [pid 5050] umount2("./606/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12224] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] unlink("./606/cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./597/cgroup.net" [pid 5047] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12224] <... symlink resumed>) = 0 [pid 12223] <... chdir resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 12224] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12223] <... prctl resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12224] <... symlink resumed>) = 0 [pid 12223] setpgid(0, 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./606/cgroup.net", [pid 5047] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] close(3 [pid 5049] getdents64(3, [pid 12223] <... setpgid resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12224] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12223] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] rmdir("./606" [pid 5050] unlink("./606/cgroup.net" [pid 5049] close(3 [pid 5047] newfstatat(3, "", [pid 12224] <... symlink resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] rmdir("./597" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12223] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] getdents64(3, [pid 12224] <... openat resumed>) = 3 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12223] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5050] close(3 [pid 12224] write(3, "1000", 4 [pid 5051] mkdir("./607", 0777 [pid 12224] <... write resumed>) = 4 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5049] mkdir("./598", 0777 [pid 12224] close(3) = 0 [pid 12223] <... symlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] rmdir("./606" [pid 5047] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 12224] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1198 ./strace-static-x86_64: Process 12225 attached [pid 12224] <... symlink resumed>) = 0 [pid 12223] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] unlink("./592/cgroup.cpu" [pid 12225] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12225] chdir("./598") = 0 [pid 12225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12225] setpgid(0, 0) = 0 [pid 12225] symlink("/syzcgroup/unified/syz3", "./cgroup") = 0 [pid 12225] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5047] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12223] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12226 attached [pid 12225] <... symlink resumed>) = 0 [pid 12224] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] mkdir("./607", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12226] set_robust_list(0x555556ac56a0, 24 [pid 12225] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12226] <... set_robust_list resumed>) = 0 [pid 12225] <... symlink resumed>) = 0 [pid 12223] <... openat resumed>) = 3 [pid 12226] chdir("./607" [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./592/binderfs", [pid 12224] <... futex resumed>) = 0 [pid 12225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12224] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12224] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12223] write(3, "1000", 4 [pid 12224] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] unlink("./592/binderfs" [pid 12223] <... write resumed>) = 4 [pid 12224] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12223] close(3 [pid 12226] <... chdir resumed>) = 0 [pid 12225] write(3, "1000", 4 [pid 12226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12225] <... write resumed>) = 4 [pid 12226] <... prctl resumed>) = 0 [pid 12225] close(3 [pid 12223] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12226] setpgid(0, 0 [pid 12225] <... close resumed>) = 0 [pid 12223] symlink("/dev/binderfs", "./binderfs" [pid 12226] <... setpgid resumed>) = 0 [pid 12225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12226] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12224] <... mmap resumed>) = 0x7f504ff5f000 [pid 12225] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] <... symlink resumed>) = 0 [pid 12225] <... futex resumed>) = 0 [pid 12224] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12223] <... symlink resumed>) = 0 [pid 12225] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12224] <... mprotect resumed>) = 0 [pid 12225] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12223] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12225] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12226] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12224] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12223] <... futex resumed>) = 0 [pid 12226] <... symlink resumed>) = 0 [pid 12225] <... mmap resumed>) = 0x7f504ff5f000 [pid 12224] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12225] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12225] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12226] symlink("/syzcgroup/net/syz5", "./cgroup.net") = 0 [pid 12225] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12224] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12223] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12227 attached [pid 12227] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12225] <... clone3 resumed> => {parent_tid=[1199]}, 88) = 1199 ./strace-static-x86_64: Process 12228 attached [pid 12227] <... rseq resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12228] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12227] set_robust_list(0x7f504ff7f9a0, 24 [pid 12226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12225] rt_sigprocmask(SIG_SETMASK, [], [pid 12228] <... rseq resumed>) = 0 [pid 12227] <... set_robust_list resumed>) = 0 [pid 12226] <... openat resumed>) = 3 [pid 12224] <... clone3 resumed> => {parent_tid=[1162]}, 88) = 1162 [pid 12223] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1217 [pid 5047] newfstatat(AT_FDCWD, "./592/cgroup", [pid 12228] set_robust_list(0x7f504ff7f9a0, 24 [pid 12227] rt_sigprocmask(SIG_SETMASK, [], [pid 12225] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12227] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12225] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12227] open(".", O_RDONLY [pid 12223] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12228] <... set_robust_list resumed>) = 0 [pid 12227] <... open resumed>) = 3 [pid 12225] <... futex resumed>) = 0 [pid 12228] rt_sigprocmask(SIG_SETMASK, [], [pid 12226] write(3, "1000", 4 [pid 12228] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12228] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12226] <... write resumed>) = 4 [pid 12227] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] close(3 [pid 12225] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12223] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./592/cgroup"./strace-static-x86_64: Process 12229 attached [pid 12227] <... futex resumed>) = 0 [pid 12226] <... close resumed>) = 0 [pid 12225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12224] rt_sigprocmask(SIG_SETMASK, [], [pid 12223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12227] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12226] symlink("/dev/binderfs", "./binderfs" [pid 12225] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12224] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12223] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1218 [pid 5047] <... unlink resumed>) = 0 [pid 12229] set_robust_list(0x555556ac56a0, 24 [pid 12227] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12225] <... futex resumed>) = 0 [pid 12223] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12229] <... set_robust_list resumed>) = 0 [pid 12227] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12225] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12224] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12229] chdir("./607" [pid 12227] <... fcntl resumed>) = 0 [pid 12226] <... symlink resumed>) = 0 [pid 12223] <... mprotect resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12224] <... futex resumed>) = 1 [pid 12227] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12228] <... futex resumed>) = 0 [pid 12227] <... futex resumed>) = 1 [pid 12225] <... futex resumed>) = 0 [pid 12228] open(".", O_RDONLY [pid 12227] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12225] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12223] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", [pid 12224] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12229] <... chdir resumed>) = 0 [pid 12227] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12223] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12228] <... open resumed>) = 3 [pid 12227] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12226] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12225] <... futex resumed>) = 0 [pid 12223] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12230 attached [pid 12229] <... prctl resumed>) = 0 [pid 12228] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12227] <... openat resumed>) = 4 [pid 12226] <... futex resumed>) = 0 [pid 12225] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12230] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12229] setpgid(0, 0 [pid 12228] <... futex resumed>) = 1 [pid 12226] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12224] <... futex resumed>) = 0 [pid 5047] unlink("./592/blkio.bfq.io_wait_time_recursive" [pid 12230] <... rseq resumed>) = 0 [pid 12229] <... setpgid resumed>) = 0 [pid 12228] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12227] +++ killed by SIGIO +++ [pid 12226] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12224] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12224] <... futex resumed>) = 0 [pid 12223] <... clone3 resumed> => {parent_tid=[1179]}, 88) = 1179 [pid 5047] <... unlink resumed>) = 0 [pid 12230] set_robust_list(0x7f504ff7f9a0, 24 [pid 12229] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12228] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12224] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12223] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12230] <... set_robust_list resumed>) = 0 [pid 12228] <... fcntl resumed>) = 0 [pid 12226] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12223] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12230] rt_sigprocmask(SIG_SETMASK, [], [pid 12229] <... symlink resumed>) = 0 [pid 12228] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] <... mmap resumed>) = 0x7f504ff5f000 [pid 12223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12230] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12230] open(".", O_RDONLY [pid 12226] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12223] <... futex resumed>) = 0 [pid 12229] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12228] <... futex resumed>) = 1 [pid 12225] +++ killed by SIGIO +++ [pid 12224] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./592/cgroup.net", [pid 12230] <... open resumed>) = 3 [pid 12229] <... symlink resumed>) = 0 [pid 12228] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12224] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12224] <... futex resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1198, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12228] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12224] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12228] <... openat resumed>) = 4 [pid 12229] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12230] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12229] <... symlink resumed>) = 0 [pid 12230] <... futex resumed>) = 0 [pid 12230] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] umount2("./598", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12228] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12226] <... mprotect resumed>) = 0 [pid 12224] <... futex resumed>) = ? [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12228] +++ killed by SIGIO +++ [pid 12226] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12229] <... openat resumed>) = 3 [pid 12226] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12224] +++ killed by SIGIO +++ [pid 12223] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] openat(AT_FDCWD, "./598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./592/cgroup.net" [pid 12229] write(3, "1000", 4 [pid 12226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12230] <... futex resumed>) = 0 [pid 12229] <... write resumed>) = 4 [pid 12223] <... futex resumed>) = 1 [pid 5049] <... openat resumed>) = 3 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1161, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12230] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 12230] <... fcntl resumed>) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 12230] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12229] close(3 [pid 5049] newfstatat(3, "", ./strace-static-x86_64: Process 12231 attached [pid 12230] <... futex resumed>) = 1 [pid 12229] <... close resumed>) = 0 [pid 12223] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, [pid 12231] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12230] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12229] symlink("/dev/binderfs", "./binderfs" [pid 12226] <... clone3 resumed> => {parent_tid=[1218]}, 88) = 1218 [pid 12223] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] getdents64(3, [pid 5045] umount2("./579", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12231] <... rseq resumed>) = 0 [pid 12230] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12229] <... symlink resumed>) = 0 [pid 12223] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12231] set_robust_list(0x7f504ff7f9a0, 24 [pid 12230] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12226] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12231] <... set_robust_list resumed>) = 0 [pid 12230] <... openat resumed>) = 4 [pid 12229] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12223] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./598/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] close(3 [pid 5045] openat(AT_FDCWD, "./579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12231] rt_sigprocmask(SIG_SETMASK, [], [pid 12230] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12229] <... futex resumed>) = 0 [pid 12226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... close resumed>) = 0 [pid 12231] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12229] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12226] <... futex resumed>) = 0 [pid 12223] <... futex resumed>) = ? [pid 5049] newfstatat(AT_FDCWD, "./598/cgroup.cpu", [pid 5047] rmdir("./592" [pid 5045] <... openat resumed>) = 3 [pid 12231] open(".", O_RDONLY [pid 12230] +++ killed by SIGIO +++ [pid 12229] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5047] mkdir("./593", 0777 [pid 12231] <... open resumed>) = 3 [pid 12229] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12223] +++ killed by SIGIO +++ [pid 5049] unlink("./598/cgroup.cpu" [pid 5045] newfstatat(3, "", [pid 12231] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12229] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... mkdir resumed>) = 0 [pid 12229] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] getdents64(3, [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1178, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12229] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./598/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12231] <... futex resumed>) = 1 [pid 12229] <... mprotect resumed>) = 0 [pid 12231] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] umount2("./579/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./598/binderfs", [pid 12226] <... futex resumed>) = 0 [pid 12226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12229] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12231] <... futex resumed>) = 0 [pid 12229] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] unlink("./598/binderfs" [pid 5046] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./579/cgroup.cpu", [pid 12231] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12229] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12232 attached [pid 12231] <... fcntl resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12232] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12229] <... clone3 resumed> => {parent_tid=[1219]}, 88) = 1219 [pid 5049] <... unlink resumed>) = 0 [pid 12232] <... rseq resumed>) = 0 [pid 12229] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] unlink("./579/cgroup.cpu" [pid 12232] set_robust_list(0x7f504ff7f9a0, 24 [pid 12231] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12229] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./598/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12232] <... set_robust_list resumed>) = 0 [pid 12231] <... futex resumed>) = 0 [pid 12229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12232] rt_sigprocmask(SIG_SETMASK, [], [pid 12231] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12232] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12229] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 12232] open(".", O_RDONLY [pid 12229] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12233 attached [pid 5049] newfstatat(AT_FDCWD, "./598/cgroup", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 12233] set_robust_list(0x555556ac56a0, 24 [pid 12232] <... open resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1188 [pid 12233] <... set_robust_list resumed>) = 0 [pid 12232] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] unlink("./598/cgroup" [pid 5046] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./579/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12233] chdir("./593" [pid 12232] <... futex resumed>) = 1 [pid 12229] <... futex resumed>) = 0 [pid 12226] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12231] <... futex resumed>) = 0 [pid 12226] <... futex resumed>) = 1 [pid 12231] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12226] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12233] <... chdir resumed>) = 0 [pid 12232] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./598/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12233] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12229] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./588/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./579/binderfs", [pid 12233] <... prctl resumed>) = 0 [pid 12232] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12231] <... openat resumed>) = 4 [pid 12229] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12226] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] newfstatat(AT_FDCWD, "./598/blkio.bfq.io_wait_time_recursive", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12233] setpgid(0, 0 [pid 12232] <... fcntl resumed>) = 0 [pid 12231] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12226] restart_syscall(<... resuming interrupted futex ...> [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12233] <... setpgid resumed>) = 0 [pid 12232] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12226] <... restart_syscall resumed>) = ? [pid 5046] unlink("./588/cgroup.cpu" [pid 5045] unlink("./579/binderfs" [pid 12233] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12232] <... futex resumed>) = 1 [pid 12231] +++ killed by SIGIO +++ [pid 12229] <... futex resumed>) = 0 [pid 5049] unlink("./598/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12232] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12229] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12229] <... futex resumed>) = 0 [pid 12233] <... symlink resumed>) = 0 [pid 12232] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12229] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./579/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12232] <... openat resumed>) = 4 [pid 12233] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5049] umount2("./598/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12233] <... symlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./598/cgroup.net", [pid 5046] newfstatat(AT_FDCWD, "./588/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./579/cgroup", [pid 12233] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12232] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12229] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] unlink("./598/cgroup.net" [pid 5046] unlink("./588/binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12233] <... symlink resumed>) = 0 [pid 12226] +++ killed by SIGIO +++ [pid 5049] <... unlink resumed>) = 0 [pid 5045] unlink("./579/cgroup" [pid 12232] +++ killed by SIGIO +++ [pid 5049] getdents64(3, [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1217, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] close(3 [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5046] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./607", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./588/cgroup", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] openat(AT_FDCWD, "./607", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5046] unlink("./588/cgroup" [pid 5051] newfstatat(3, "", [pid 12233] <... openat resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./598" [pid 5046] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 5046] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 5051] umount2("./607/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12233] write(3, "1000", 4 [pid 5045] umount2("./579/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 5051] newfstatat(AT_FDCWD, "./607/cgroup.cpu", [pid 5046] <... unlink resumed>) = 0 [pid 12233] <... write resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./599", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] unlink("./607/cgroup.cpu") = 0 [pid 5046] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... mkdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./579/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./588/cgroup.net", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./607/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12233] close(3 [pid 12229] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./579/blkio.bfq.io_wait_time_recursive" [pid 12233] <... close resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] newfstatat(AT_FDCWD, "./607/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1218, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12233] symlink("/dev/binderfs", "./binderfs" [pid 5051] unlink("./607/binderfs" [pid 5050] restart_syscall(<... resuming interrupted clone ...> [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... restart_syscall resumed>) = 0 [pid 12233] <... symlink resumed>) = 0 [pid 5050] umount2("./607", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./588/cgroup.net" [pid 5051] umount2("./607/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./607/cgroup", [pid 12233] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12233] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12233] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] openat(AT_FDCWD, "./607", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] getdents64(3, [pid 12233] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] unlink("./607/cgroup" [pid 5050] <... openat resumed>) = 3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./579/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12233] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5046] close(3 [pid 12233] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1200 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12233] <... mprotect resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./579/cgroup.net", [pid 5046] <... close resumed>) = 0 [pid 5051] umount2("./607/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12233] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] rmdir("./588" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12233] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] unlink("./579/cgroup.net" [pid 12233] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./607/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 12235 attached [pid 12233] <... clone3 resumed> => {parent_tid=[1189]}, 88) = 1189 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12235] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] unlink("./607/blkio.bfq.io_wait_time_recursive" [pid 5045] getdents64(3, [pid 12235] <... rseq resumed>) = 0 [pid 12233] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12235] set_robust_list(0x7f504ff7f9a0, 24 [pid 12233] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12235] <... set_robust_list resumed>) = 0 [pid 12233] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12235] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] mkdir("./589", 0777 [pid 5045] close(3./strace-static-x86_64: Process 12234 attached [pid 12235] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12233] <... futex resumed>) = 0 [pid 5051] umount2("./607/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] getdents64(3, [pid 5045] <... close resumed>) = 0 [pid 12235] open(".", O_RDONLY [pid 12234] set_robust_list(0x555556ac56a0, 24 [pid 12233] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 12234] <... set_robust_list resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12235] <... open resumed>) = 3 [pid 12234] chdir("./599" [pid 5051] newfstatat(AT_FDCWD, "./607/cgroup.net", [pid 5050] umount2("./607/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./579" [pid 12235] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12234] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... rmdir resumed>) = 0 [pid 12234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] newfstatat(AT_FDCWD, "./607/cgroup.cpu", [pid 12234] <... prctl resumed>) = 0 [pid 12234] setpgid(0, 0 [pid 5051] unlink("./607/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12236 attached [pid 12235] <... futex resumed>) = 1 [pid 12234] <... setpgid resumed>) = 0 [pid 12233] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./607/cgroup.cpu" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1180 [pid 12236] set_robust_list(0x555556ac56a0, 24 [pid 12235] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12234] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] getdents64(3, [pid 5045] mkdir("./580", 0777 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12236] <... set_robust_list resumed>) = 0 [pid 12233] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] close(3 [pid 5050] <... unlink resumed>) = 0 [pid 12236] chdir("./589" [pid 12235] <... futex resumed>) = 0 [pid 12233] <... futex resumed>) = 1 [pid 5050] umount2("./607/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 12236] <... chdir resumed>) = 0 [pid 12235] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12234] <... symlink resumed>) = 0 [pid 12233] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12236] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12235] <... fcntl resumed>) = 0 [pid 12234] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5050] newfstatat(AT_FDCWD, "./607/binderfs", [pid 12236] <... prctl resumed>) = 0 [pid 12235] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./607" [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12237 attached [pid 12236] setpgid(0, 0 [pid 12235] <... futex resumed>) = 1 [pid 12234] <... symlink resumed>) = 0 [pid 12233] <... futex resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12236] <... setpgid resumed>) = 0 [pid 12235] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12233] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./607/binderfs" [pid 12234] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12233] <... futex resumed>) = 0 [pid 12233] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12235] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12234] <... symlink resumed>) = 0 [pid 12236] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12235] <... openat resumed>) = 4 [pid 5051] mkdir("./608", 0777 [pid 12237] set_robust_list(0x555556ac56a0, 24 [pid 12236] <... symlink resumed>) = 0 [pid 12235] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12237] <... set_robust_list resumed>) = 0 [pid 12235] +++ killed by SIGIO +++ [pid 12233] <... futex resumed>) = ? [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12237] chdir("./580") = 0 [pid 12236] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12234] <... openat resumed>) = 3 [pid 12233] +++ killed by SIGIO +++ [pid 5050] umount2("./607/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12236] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12237] setpgid(0, 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1163 [pid 12234] write(3, "1000", 4 [pid 5050] newfstatat(AT_FDCWD, "./607/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12234] <... write resumed>) = 4 ./strace-static-x86_64: Process 12238 attached [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1219 [pid 12238] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12238] chdir("./608" [pid 5050] unlink("./607/cgroup" [pid 12234] close(3 [pid 12238] <... chdir resumed>) = 0 [pid 12234] <... close resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1188, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12238] setpgid(0, 0 [pid 12237] <... setpgid resumed>) = 0 [pid 12236] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12234] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... unlink resumed>) = 0 [pid 12238] <... setpgid resumed>) = 0 [pid 12238] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] umount2("./593", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12236] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12234] <... symlink resumed>) = 0 [pid 12236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] umount2("./607/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12234] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12238] <... symlink resumed>) = 0 [pid 12236] <... openat resumed>) = 3 [pid 12234] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 12238] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12237] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12236] write(3, "1000", 4 [pid 12234] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./607/blkio.bfq.io_wait_time_recursive", [pid 12238] <... symlink resumed>) = 0 [pid 12237] <... symlink resumed>) = 0 [pid 12236] <... write resumed>) = 4 [pid 12234] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(3, "", [pid 12238] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12236] close(3 [pid 12234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] unlink("./607/blkio.bfq.io_wait_time_recursive" [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12238] <... symlink resumed>) = 0 [pid 12236] <... close resumed>) = 0 [pid 12234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 12237] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12236] symlink("/dev/binderfs", "./binderfs" [pid 12234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] umount2("./607/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12238] <... openat resumed>) = 3 [pid 12234] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12234] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5047] umount2("./593/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12238] write(3, "1000", 4 [pid 12236] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12238] <... write resumed>) = 4 [pid 12234] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] newfstatat(AT_FDCWD, "./593/cgroup.cpu", [pid 5050] newfstatat(AT_FDCWD, "./607/cgroup.net", [pid 12238] close(3 [pid 12236] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12238] <... close resumed>) = 0 [pid 12237] <... symlink resumed>) = 0 [pid 12238] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12236] <... futex resumed>) = 0 [pid 12238] <... symlink resumed>) = 0 [pid 12238] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./593/cgroup.cpu") = 0 [pid 12238] <... futex resumed>) = 0 [pid 12238] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] unlink("./607/cgroup.net" [pid 12236] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12238] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] umount2("./593/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12238] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] newfstatat(AT_FDCWD, "./593/binderfs", [pid 12238] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12238] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] unlink("./593/binderfs" [pid 12238] <... mprotect resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12238] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./593/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12238] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./593/cgroup", ./strace-static-x86_64: Process 12239 attached [pid 12239] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12238] <... clone3 resumed> => {parent_tid=[1220]}, 88) = 1220 [pid 12239] <... rseq resumed>) = 0 [pid 12238] rt_sigprocmask(SIG_SETMASK, [], [pid 12239] set_robust_list(0x7f504ff7f9a0, 24 [pid 12238] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12239] <... set_robust_list resumed>) = 0 [pid 12238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./593/cgroup" [pid 12239] rt_sigprocmask(SIG_SETMASK, [], [pid 12238] <... futex resumed>) = 0 [pid 12239] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12238] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 [pid 12239] open(".", O_RDONLY [pid 12236] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12239] <... open resumed>) = 3 [pid 5047] umount2("./593/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12239] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12236] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12239] <... futex resumed>) = 1 [pid 12238] <... futex resumed>) = 0 [pid 12237] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12234] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./593/blkio.bfq.io_wait_time_recursive", [pid 12239] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12238] <... futex resumed>) = 0 [pid 12234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12239] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12238] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./593/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 12240 attached [pid 12239] <... fcntl resumed>) = 0 [pid 12237] <... symlink resumed>) = 0 [pid 12236] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] close(3 [pid 5047] <... unlink resumed>) = 0 [pid 12240] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12239] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12239] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12238] <... futex resumed>) = 0 [pid 12240] <... rseq resumed>) = 0 [pid 12239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12238] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12240] set_robust_list(0x7f504ff7f9a0, 24 [pid 12239] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12238] <... futex resumed>) = 0 [pid 12236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12234] <... clone3 resumed> => {parent_tid=[1201]}, 88) = 1201 [pid 5050] <... close resumed>) = 0 [pid 12240] <... set_robust_list resumed>) = 0 [pid 12239] <... openat resumed>) = 4 [pid 12238] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12236] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] rmdir("./607" [pid 5047] umount2("./593/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12240] rt_sigprocmask(SIG_SETMASK, [], [pid 12234] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12239] +++ killed by SIGIO +++ [pid 12237] <... openat resumed>) = 3 [pid 12236] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./593/cgroup.net", [pid 12240] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12237] write(3, "1000", 4 [pid 12236] <... mprotect resumed>) = 0 [pid 12234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] mkdir("./608", 0777 [pid 12240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12238] +++ killed by SIGIO +++ [pid 12237] <... write resumed>) = 4 [pid 12234] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12240] open(".", O_RDONLY [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1219, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12240] <... open resumed>) = 3 [pid 12237] close(3 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] unlink("./593/cgroup.net" [pid 12237] <... close resumed>) = 0 [pid 12236] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12240] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./608", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12240] <... futex resumed>) = 1 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12234] <... futex resumed>) = 0 [pid 12240] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12234] <... futex resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./608", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12240] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 12240] <... fcntl resumed>) = 0 [pid 12240] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12240] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12234] <... futex resumed>) = 0 [pid 12234] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 12236] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12240] <... futex resumed>) = 0 [pid 12237] symlink("/dev/binderfs", "./binderfs" [pid 12236] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12234] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] getdents64(3, [pid 12240] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12234] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12241 attached [pid 12240] <... openat resumed>) = 4 [pid 5051] getdents64(3, [pid 5047] close(3) = 0 [pid 12237] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12236] <... clone3 resumed> => {parent_tid=[1181]}, 88) = 1181 [pid 5047] rmdir("./593" [pid 12237] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12241] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] umount2("./608/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12241] <... rseq resumed>) = 0 [pid 12234] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12241] set_robust_list(0x7f504ff7f9a0, 24 [pid 12240] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12234] ???( [pid 5051] newfstatat(AT_FDCWD, "./608/cgroup.cpu", [pid 12236] rt_sigprocmask(SIG_SETMASK, [], [pid 12241] <... set_robust_list resumed>) = 0 [pid 12234] <... ??? resumed>) = ? [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12241] rt_sigprocmask(SIG_SETMASK, [], [pid 12240] +++ killed by SIGIO +++ [pid 12237] <... futex resumed>) = 0 [pid 12236] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12242 attached [pid 12241] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12237] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12236] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./608/cgroup.cpu" [pid 5047] <... rmdir resumed>) = 0 [pid 12241] open(".", O_RDONLY [pid 12237] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12236] <... futex resumed>) = 0 [pid 12242] set_robust_list(0x555556ac56a0, 24 [pid 12237] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12236] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 12242] <... set_robust_list resumed>) = 0 [pid 12241] <... open resumed>) = 3 [pid 12237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1220 [pid 5047] mkdir("./594", 0777 [pid 12242] chdir("./608" [pid 12241] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12234] +++ killed by SIGIO +++ [pid 5051] umount2("./608/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12241] <... futex resumed>) = 1 [pid 12236] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] <... chdir resumed>) = 0 [pid 12241] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12237] <... mmap resumed>) = 0x7f504ff5f000 [pid 12236] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./608/binderfs", [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1200, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12242] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] umount2("./599", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12242] <... prctl resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] setpgid(0, 0 [pid 12241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12236] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] openat(AT_FDCWD, "./599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... mkdir resumed>) = 0 [pid 12237] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12242] <... setpgid resumed>) = 0 [pid 12241] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12236] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12241] <... fcntl resumed>) = 0 [pid 5051] unlink("./608/binderfs" [pid 12242] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12241] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12237] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12241] <... futex resumed>) = 1 [pid 12241] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12236] <... futex resumed>) = 0 [pid 12236] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12241] <... futex resumed>) = 0 [pid 12236] <... futex resumed>) = 1 [pid 5051] umount2("./608/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(3, "", [pid 12241] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12236] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] <... symlink resumed>) = 0 [pid 12241] <... openat resumed>) = 4 [pid 12237] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] newfstatat(AT_FDCWD, "./608/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./608/cgroup") = 0 [pid 12241] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./608/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12236] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12236] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12243 attached [pid 12241] +++ killed by SIGIO +++ [pid 12236] <... restart_syscall resumed>) = ? [pid 12243] set_robust_list(0x555556ac56a0, 24 [pid 5051] newfstatat(AT_FDCWD, "./608/blkio.bfq.io_wait_time_recursive", [pid 12243] <... set_robust_list resumed>) = 0 [pid 12242] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12237] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1190 [pid 12243] chdir("./594") = 0 [pid 12242] <... symlink resumed>) = 0 [pid 5051] unlink("./608/blkio.bfq.io_wait_time_recursive" [pid 12243] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12242] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12237] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 12244 attached [pid 12243] <... prctl resumed>) = 0 [pid 12242] <... symlink resumed>) = 0 [pid 5051] umount2("./608/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./599/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12244] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12243] setpgid(0, 0 [pid 12242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12237] <... clone3 resumed> => {parent_tid=[1164]}, 88) = 1164 [pid 12236] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12244] <... rseq resumed>) = 0 [pid 12243] <... setpgid resumed>) = 0 [pid 12237] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] newfstatat(AT_FDCWD, "./599/cgroup.cpu", [pid 12244] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12244] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] newfstatat(AT_FDCWD, "./608/cgroup.net", [pid 12243] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./608/cgroup.net" [pid 5049] unlink("./599/cgroup.cpu" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1180, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 12237] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 12243] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5051] rmdir("./608" [pid 12242] <... openat resumed>) = 3 [pid 12244] <... futex resumed>) = 0 [pid 12242] write(3, "1000", 4 [pid 12237] <... futex resumed>) = 1 [pid 5046] <... restart_syscall resumed>) = 0 [pid 12244] open(".", O_RDONLY [pid 12243] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12242] <... write resumed>) = 4 [pid 5049] umount2("./599/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12244] <... open resumed>) = 3 [pid 12237] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12244] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12244] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... rmdir resumed>) = 0 [pid 5046] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] <... close resumed>) = 0 [pid 5051] mkdir("./609", 0777 [pid 12243] <... symlink resumed>) = 0 [pid 12242] symlink("/dev/binderfs", "./binderfs" [pid 12237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] newfstatat(AT_FDCWD, "./599/binderfs", [pid 5051] <... mkdir resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... openat resumed>) = 3 [pid 12237] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12243] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12242] <... symlink resumed>) = 0 [pid 12237] <... futex resumed>) = 1 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(3, "", ./strace-static-x86_64: Process 12245 attached [pid 12244] <... futex resumed>) = 0 [pid 12242] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12245] set_robust_list(0x555556ac56a0, 24 [pid 12244] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12243] <... symlink resumed>) = 0 [pid 12245] <... set_robust_list resumed>) = 0 [pid 12244] <... fcntl resumed>) = 0 [pid 12243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12242] <... futex resumed>) = 0 [pid 12237] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1221 [pid 5049] unlink("./599/binderfs" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12245] chdir("./609" [pid 12244] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12242] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12244] <... futex resumed>) = 0 [pid 12242] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] getdents64(3, [pid 12245] <... chdir resumed>) = 0 [pid 12244] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12237] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12245] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12245] <... prctl resumed>) = 0 [pid 12244] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12245] setpgid(0, 0 [pid 12244] <... openat resumed>) = 4 [pid 12242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12237] <... futex resumed>) = 0 [pid 12245] <... setpgid resumed>) = 0 [pid 12243] <... openat resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 12242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12245] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12244] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12244] +++ killed by SIGIO +++ [pid 12243] write(3, "1000", 4 [pid 12242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12243] <... write resumed>) = 4 [pid 5049] umount2("./599/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12242] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12245] <... symlink resumed>) = 0 [pid 12243] close(3 [pid 5049] newfstatat(AT_FDCWD, "./599/cgroup", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12245] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12243] <... close resumed>) = 0 [pid 12242] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 12245] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12242] <... mprotect resumed>) = 0 [pid 12245] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12245] <... symlink resumed>) = 0 [pid 12243] symlink("/dev/binderfs", "./binderfs" [pid 12245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12243] <... symlink resumed>) = 0 [pid 12245] <... openat resumed>) = 3 [pid 12242] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] unlink("./599/cgroup" [pid 12245] write(3, "1000", 4) = 4 [pid 12245] close(3) = 0 [pid 12245] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5046] unlink("./589/cgroup.cpu" [pid 12242] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12245] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12245] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12245] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12243] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12245] <... mmap resumed>) = 0x7f504ff5f000 [pid 12245] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... unlink resumed>) = 0 [pid 12245] <... mprotect resumed>) = 0 [pid 12243] <... futex resumed>) = 0 [pid 12242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./599/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12243] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, ./strace-static-x86_64: Process 12246 attached [pid 12245] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12246] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12243] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] <... clone3 resumed> => {parent_tid=[1221]}, 88) = 1221 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12246] <... rseq resumed>) = 0 [pid 12245] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12243] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12242] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] newfstatat(AT_FDCWD, "./599/blkio.bfq.io_wait_time_recursive", [pid 5046] newfstatat(AT_FDCWD, "./589/binderfs", [pid 12246] set_robust_list(0x7f504ff7f9a0, 24 [pid 12245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12237] +++ killed by SIGIO +++ [pid 12246] <... set_robust_list resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1163, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 12247 attached [pid 12246] rt_sigprocmask(SIG_SETMASK, [], [pid 12243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12242] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./599/blkio.bfq.io_wait_time_recursive" [pid 5046] unlink("./589/binderfs" [pid 12247] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12246] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12245] <... clone3 resumed> => {parent_tid=[1222]}, 88) = 1222 [pid 12243] <... mmap resumed>) = 0x7f504ff5f000 [pid 12242] <... futex resumed>) = 0 [pid 12246] open(".", O_RDONLY [pid 5049] <... unlink resumed>) = 0 [pid 12247] <... rseq resumed>) = 0 [pid 12246] <... open resumed>) = 3 [pid 12245] rt_sigprocmask(SIG_SETMASK, [], [pid 12243] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12242] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./599/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12247] set_robust_list(0x7f504ff7f9a0, 24 [pid 12245] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12243] <... mprotect resumed>) = 0 [pid 12246] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12247] <... set_robust_list resumed>) = 0 [pid 12246] <... futex resumed>) = 1 [pid 12245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12242] <... futex resumed>) = 0 [pid 12247] rt_sigprocmask(SIG_SETMASK, [], [pid 12246] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12245] <... futex resumed>) = 0 [pid 12243] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12242] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./599/cgroup.net", [pid 5046] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12247] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12242] <... futex resumed>) = 0 [pid 12246] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12242] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12246] <... fcntl resumed>) = 0 [pid 12246] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12246] <... futex resumed>) = 1 [pid 12242] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./589/cgroup", [pid 12246] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12242] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./599/cgroup.net" [pid 12246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12243] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12242] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12246] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12242] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12246] <... openat resumed>) = 4 [pid 12245] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12243] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5046] unlink("./589/cgroup" [pid 5045] umount2("./580", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12246] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12242] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12242] restart_syscall(<... resuming interrupted futex ...> [pid 12247] open(".", O_RDONLY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12242] <... restart_syscall resumed>) = ? [pid 5045] openat(AT_FDCWD, "./580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12246] +++ killed by SIGIO +++ [pid 5045] <... openat resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 12247] <... open resumed>) = 3 ./strace-static-x86_64: Process 12248 attached [pid 5045] newfstatat(3, "", [pid 12248] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12248] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12248] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12248] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12247] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12243] <... clone3 resumed> => {parent_tid=[1191]}, 88) = 1191 [pid 5049] getdents64(3, [pid 5046] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12247] <... futex resumed>) = 1 [pid 12245] <... futex resumed>) = 0 [pid 12243] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12247] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12247] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12245] <... futex resumed>) = 0 [pid 5049] close(3 [pid 5046] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 5045] getdents64(3, [pid 12243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12247] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12245] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12243] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... close resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12247] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12243] <... futex resumed>) = 1 [pid 5049] rmdir("./599" [pid 12248] <... futex resumed>) = 0 [pid 12248] open(".", O_RDONLY) = 3 [pid 12248] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12247] <... futex resumed>) = 0 [pid 12245] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12243] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12242] +++ killed by SIGIO +++ [pid 5049] <... rmdir resumed>) = 0 [pid 5046] unlink("./589/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./580/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12248] <... futex resumed>) = 0 [pid 12247] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1220, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12248] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12245] <... futex resumed>) = 0 [pid 12245] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12243] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12243] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12248] <... futex resumed>) = 0 [pid 12243] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12248] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12248] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12248] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12243] <... futex resumed>) = 0 [pid 12243] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12248] <... futex resumed>) = 0 [pid 12243] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12248] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5049] mkdir("./600", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12247] <... openat resumed>) = 4 [pid 5049] <... mkdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./580/cgroup.cpu", [pid 12247] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12248] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./608", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12245] <... futex resumed>) = ? [pid 12243] <... futex resumed>) = ? [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12248] +++ killed by SIGIO +++ [pid 12247] +++ killed by SIGIO +++ [pid 12245] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./589/cgroup.net" [pid 5050] openat(AT_FDCWD, "./608", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 5045] unlink("./580/cgroup.cpu" [pid 5050] <... openat resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, [pid 12243] +++ killed by SIGIO +++ [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1221, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] getdents64(3, [pid 5045] umount2("./580/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./609", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./609", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./608/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./580/binderfs", [pid 5051] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./589" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1190, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- ./strace-static-x86_64: Process 12249 attached [pid 5051] newfstatat(3, "", [pid 5050] newfstatat(AT_FDCWD, "./608/cgroup.cpu", [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1202 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5045] unlink("./580/binderfs" [pid 12249] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... restart_syscall resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12249] <... set_robust_list resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] unlink("./608/cgroup.cpu" [pid 12249] chdir("./600" [pid 5047] umount2("./594", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./590", 0777 [pid 12249] <... chdir resumed>) = 0 [pid 5051] umount2("./609/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./580/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./608/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] openat(AT_FDCWD, "./594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12249] <... prctl resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./609/cgroup.cpu", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./580/cgroup", [pid 12249] setpgid(0, 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12249] <... setpgid resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./608/binderfs", [pid 5047] newfstatat(3, "", [pid 12249] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./580/cgroup" [pid 5051] unlink("./609/cgroup.cpu" [pid 5045] <... unlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 12249] <... symlink resumed>) = 0 [pid 5050] unlink("./608/binderfs"./strace-static-x86_64: Process 12250 attached [pid 12249] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] umount2("./609/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./580/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./594/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./594/cgroup.cpu", [pid 12250] set_robust_list(0x555556ac56a0, 24 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./608/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1182 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12250] <... set_robust_list resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./609/binderfs", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12250] chdir("./590" [pid 5045] newfstatat(AT_FDCWD, "./580/blkio.bfq.io_wait_time_recursive", [pid 12250] <... chdir resumed>) = 0 [pid 12249] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./608/cgroup", [pid 5047] unlink("./594/cgroup.cpu" [pid 12250] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12250] <... prctl resumed>) = 0 [pid 12249] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12250] setpgid(0, 0 [pid 5050] unlink("./608/cgroup" [pid 5045] unlink("./580/blkio.bfq.io_wait_time_recursive" [pid 12250] <... setpgid resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12249] <... symlink resumed>) = 0 [pid 5051] unlink("./609/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 5047] umount2("./594/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12250] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5050] umount2("./608/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12250] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./594/binderfs", [pid 12249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./580/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./608/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12250] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12249] <... openat resumed>) = 3 [pid 5050] unlink("./608/blkio.bfq.io_wait_time_recursive" [pid 5047] unlink("./594/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./609/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 12249] write(3, "1000", 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./580/cgroup.net", [pid 12249] <... write resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./609/cgroup", [pid 5050] umount2("./608/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12249] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12249] <... close resumed>) = 0 [pid 5051] unlink("./609/cgroup" [pid 5050] newfstatat(AT_FDCWD, "./608/cgroup.net", [pid 5047] umount2("./594/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./580/cgroup.net" [pid 12250] <... symlink resumed>) = 0 [pid 12249] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./608/cgroup.net") = 0 [pid 5047] newfstatat(AT_FDCWD, "./594/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./594/cgroup" [pid 12250] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5051] umount2("./609/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 12250] <... symlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5047] umount2("./594/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] rmdir("./608" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12249] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... rmdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./594/blkio.bfq.io_wait_time_recursive", [pid 5045] getdents64(3, [pid 12249] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./594/blkio.bfq.io_wait_time_recursive" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] close(3 [pid 5050] mkdir("./609", 0777 [pid 12250] <... openat resumed>) = 3 [pid 12249] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./609/blkio.bfq.io_wait_time_recursive", [pid 5050] <... mkdir resumed>) = 0 [pid 5047] umount2("./594/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... close resumed>) = 0 [pid 12249] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12249] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] rmdir("./580" [pid 12249] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./594/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./594/cgroup.net" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... unlink resumed>) = 0 [pid 12250] write(3, "1000", 4) = 4 [pid 12249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./609/blkio.bfq.io_wait_time_recursive" [pid 5045] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12251 attached [pid 12250] close(3 [pid 12249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./594" [pid 12250] <... close resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5047] mkdir("./595", 0777 [pid 12249] <... mmap resumed>) = 0x7f504ff5f000 [pid 12250] symlink("/dev/binderfs", "./binderfs" [pid 12249] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] umount2("./609/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12251] set_robust_list(0x555556ac56a0, 24 [pid 12250] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12249] <... mprotect resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./609/cgroup.net", [pid 12251] <... set_robust_list resumed>) = 0 [pid 5045] mkdir("./581", 0777 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1222 [pid 5047] <... mkdir resumed>) = 0 [pid 12249] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12250] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... mkdir resumed>) = 0 [pid 5051] unlink("./609/cgroup.net" [pid 12250] <... futex resumed>) = 0 [pid 12251] chdir("./609" [pid 12250] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12249] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12251] <... chdir resumed>) = 0 [pid 12251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12250] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 12251] <... prctl resumed>) = 0 [pid 12250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12251] setpgid(0, 0 [pid 12250] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12249] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12252 attached [pid 12251] <... setpgid resumed>) = 0 [pid 12250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 12254 attached ./strace-static-x86_64: Process 12253 attached [pid 12252] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12251] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12249] <... clone3 resumed> => {parent_tid=[1203]}, 88) = 1203 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12250] <... mmap resumed>) = 0x7f504ff5f000 [pid 12254] set_robust_list(0x555556ac56a0, 24 [pid 12252] <... rseq resumed>) = 0 [pid 12249] rt_sigprocmask(SIG_SETMASK, [], [pid 12254] <... set_robust_list resumed>) = 0 [pid 12253] set_robust_list(0x555556ac56a0, 24 [pid 12252] set_robust_list(0x7f504ff7f9a0, 24 [pid 12250] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] close(3 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1192 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1165 [pid 12254] chdir("./581" [pid 12252] <... set_robust_list resumed>) = 0 [pid 12251] <... symlink resumed>) = 0 [pid 12250] <... mprotect resumed>) = 0 [pid 12249] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12252] rt_sigprocmask(SIG_SETMASK, [], [pid 12249] <... futex resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 12254] <... chdir resumed>) = 0 [pid 12252] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12250] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12249] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12254] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12253] <... set_robust_list resumed>) = 0 [pid 12252] open(".", O_RDONLY [pid 12254] <... prctl resumed>) = 0 [pid 12252] <... open resumed>) = 3 [pid 12253] chdir("./595" [pid 5051] rmdir("./609" [pid 12250] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12254] setpgid(0, 0 [pid 12253] <... chdir resumed>) = 0 [pid 12252] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12251] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12254] <... setpgid resumed>) = 0 [pid 12252] <... futex resumed>) = 1 [pid 12249] <... futex resumed>) = 0 [pid 12254] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12252] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12249] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... rmdir resumed>) = 0 [pid 12252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12254] <... symlink resumed>) = 0 [pid 12252] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12249] <... futex resumed>) = 0 [pid 12252] <... fcntl resumed>) = 0 [pid 12249] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12254] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12252] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12254] <... symlink resumed>) = 0 [pid 12252] <... futex resumed>) = 0 [pid 12249] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12252] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12249] <... futex resumed>) = 0 [pid 12254] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12253] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12251] <... symlink resumed>) = 0 [pid 5051] mkdir("./610", 0777 [pid 12252] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12255 attached [pid 12253] <... prctl resumed>) = 0 [pid 12251] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12250] <... clone3 resumed> => {parent_tid=[1183]}, 88) = 1183 [pid 12249] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12255] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12253] setpgid(0, 0 [pid 12252] +++ killed by SIGIO +++ [pid 12255] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12254] <... symlink resumed>) = 0 [pid 12253] <... setpgid resumed>) = 0 [pid 12251] <... symlink resumed>) = 0 [pid 12250] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... mkdir resumed>) = 0 [pid 12254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12255] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12253] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12250] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12255] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12253] <... symlink resumed>) = 0 [pid 12250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12255] <... futex resumed>) = 0 [pid 12255] open(".", O_RDONLY [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12250] <... futex resumed>) = 1 [pid 12255] <... open resumed>) = 3 [pid 12251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12255] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12254] <... openat resumed>) = 3 [pid 12253] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12251] <... openat resumed>) = 3 [pid 12250] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12249] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12256 attached [pid 12255] <... futex resumed>) = 0 [pid 12254] write(3, "1000", 4 [pid 12256] set_robust_list(0x555556ac56a0, 24 [pid 12255] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12256] <... set_robust_list resumed>) = 0 [pid 12250] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12256] chdir("./610" [pid 12254] <... write resumed>) = 4 [pid 12253] <... symlink resumed>) = 0 [pid 12251] write(3, "1000", 4 [pid 12250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1223 [pid 12255] <... futex resumed>) = 0 [pid 12254] close(3 [pid 12253] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12251] <... write resumed>) = 4 [pid 12250] <... futex resumed>) = 1 [pid 12255] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12256] <... chdir resumed>) = 0 [pid 12255] <... fcntl resumed>) = 0 [pid 12254] <... close resumed>) = 0 [pid 12251] close(3 [pid 12250] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1202, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12255] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12254] symlink("/dev/binderfs", "./binderfs" [pid 12251] <... close resumed>) = 0 [pid 12250] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 12256] <... prctl resumed>) = 0 [pid 12255] <... futex resumed>) = 0 [pid 12253] <... symlink resumed>) = 0 [pid 5049] <... restart_syscall resumed>) = 0 [pid 12250] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12256] setpgid(0, 0 [pid 12255] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12250] <... futex resumed>) = 0 [pid 12254] <... symlink resumed>) = 0 [pid 12253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12251] symlink("/dev/binderfs", "./binderfs" [pid 12256] <... setpgid resumed>) = 0 [pid 12255] <... openat resumed>) = 4 [pid 12253] <... openat resumed>) = 3 [pid 12250] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12254] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5049] umount2("./600", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12254] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12253] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12256] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12254] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12253] <... write resumed>) = 4 [pid 12251] <... symlink resumed>) = 0 [pid 5049] openat(AT_FDCWD, "./600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12253] close(3 [pid 12251] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... openat resumed>) = 3 [pid 12254] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12253] <... close resumed>) = 0 [pid 12254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12251] <... futex resumed>) = 0 [pid 12253] symlink("/dev/binderfs", "./binderfs" [pid 12251] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(3, "", [pid 12254] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12253] <... symlink resumed>) = 0 [pid 12251] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, [pid 12254] <... mprotect resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12254] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12253] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12251] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5049] umount2("./600/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12253] <... futex resumed>) = 0 [pid 12251] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12254] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12253] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12251] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./600/cgroup.cpu", [pid 12254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12253] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12251] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12253] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12251] <... mprotect resumed>) = 0 [pid 12253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./600/cgroup.cpu" [pid 12253] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12251] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... unlink resumed>) = 0 [pid 12254] <... clone3 resumed> => {parent_tid=[1166]}, 88) = 1166 [pid 12253] <... mmap resumed>) = 0x7f504ff5f000 ./strace-static-x86_64: Process 12257 attached [pid 12257] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12253] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12257] <... rseq resumed>) = 0 [pid 12253] <... mprotect resumed>) = 0 [pid 12251] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12254] rt_sigprocmask(SIG_SETMASK, [], [pid 12251] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] umount2("./600/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12257] set_robust_list(0x7f504ff7f9a0, 24 [pid 12256] <... symlink resumed>) = 0 [pid 12254] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12253] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12257] <... set_robust_list resumed>) = 0 [pid 12256] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12257] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 12258 attached [pid 12254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12253] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12251] <... clone3 resumed> => {parent_tid=[1223]}, 88) = 1223 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12258] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12256] <... symlink resumed>) = 0 [pid 12254] <... futex resumed>) = 1 [pid 12253] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12251] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] newfstatat(AT_FDCWD, "./600/binderfs", [pid 12258] <... rseq resumed>) = 0 [pid 12257] <... futex resumed>) = 0 [pid 12256] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12255] +++ killed by SIGIO +++ [pid 12254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12251] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12250] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12259 attached [pid 12258] set_robust_list(0x7f504ff7f9a0, 24 [pid 12257] open(".", O_RDONLY [pid 12251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./600/binderfs" [pid 12259] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12258] <... set_robust_list resumed>) = 0 [pid 12253] <... clone3 resumed> => {parent_tid=[1193]}, 88) = 1193 [pid 12251] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12256] <... symlink resumed>) = 0 [pid 12259] <... rseq resumed>) = 0 [pid 12258] rt_sigprocmask(SIG_SETMASK, [], [pid 12253] rt_sigprocmask(SIG_SETMASK, [], [pid 12251] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12259] set_robust_list(0x7f504ff7f9a0, 24 [pid 12258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12257] <... open resumed>) = 3 [pid 12256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1182, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12259] <... set_robust_list resumed>) = 0 [pid 12258] open(".", O_RDONLY [pid 5049] umount2("./600/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12259] rt_sigprocmask(SIG_SETMASK, [], [pid 12258] <... open resumed>) = 3 [pid 12253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12259] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 12257] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... restart_syscall resumed>) = 0 [pid 12257] <... futex resumed>) = 1 [pid 12254] <... futex resumed>) = 0 [pid 12259] open(".", O_RDONLY [pid 12258] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12253] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./600/cgroup", [pid 12259] <... open resumed>) = 3 [pid 12258] <... futex resumed>) = 1 [pid 12251] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12258] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12257] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12256] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12254] <... futex resumed>) = 0 [pid 12259] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12258] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./600/cgroup" [pid 12259] <... futex resumed>) = 0 [pid 12258] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12257] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12256] write(3, "1000", 4 [pid 12254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12251] <... futex resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... unlink resumed>) = 0 [pid 12259] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12258] <... fcntl resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 12256] <... write resumed>) = 4 [pid 12256] close(3) = 0 [pid 12257] <... fcntl resumed>) = 0 [pid 12256] symlink("/dev/binderfs", "./binderfs" [pid 12259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./600/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12258] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12251] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12259] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12258] <... futex resumed>) = 0 [pid 12257] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12256] <... symlink resumed>) = 0 [pid 12253] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(3, "", [pid 12259] <... fcntl resumed>) = 0 [pid 12258] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12257] <... futex resumed>) = 1 [pid 12256] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12254] <... futex resumed>) = 0 [pid 12251] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12257] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12256] <... futex resumed>) = 0 [pid 12256] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5046] getdents64(3, [pid 12256] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12256] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12256] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5046] newfstatat(AT_FDCWD, "./590/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12256] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12251] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./600/blkio.bfq.io_wait_time_recursive", [pid 12259] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12254] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12251] <... futex resumed>) = 1 [pid 12259] <... futex resumed>) = 0 [pid 12254] <... futex resumed>) = 1 [pid 12253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12259] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12254] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12253] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12251] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12253] <... futex resumed>) = 0 [pid 5049] unlink("./600/blkio.bfq.io_wait_time_recursive" [pid 12259] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12258] <... futex resumed>) = 0 [pid 12257] <... futex resumed>) = 0 [pid 12256] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12253] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] unlink("./590/cgroup.cpu" [pid 12258] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12257] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12259] <... openat resumed>) = 4 [pid 12258] <... openat resumed>) = 4 [pid 12257] <... openat resumed>) = 4 [pid 5046] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./590/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12256] <... clone3 resumed> => {parent_tid=[1224]}, 88) = 1224 [pid 12256] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] unlink("./590/binderfs" [pid 12256] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12258] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 12257] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12256] <... futex resumed>) = 0 [pid 12251] <... futex resumed>) = ? [pid 12256] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12258] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12260 attached [pid 12259] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12257] +++ killed by SIGIO +++ [pid 12254] <... futex resumed>) = ? [pid 5049] umount2("./600/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./600/cgroup.net", [pid 12253] <... futex resumed>) = ? [pid 12259] +++ killed by SIGIO +++ [pid 12251] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12260] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./600/cgroup.net") = 0 [pid 5046] newfstatat(AT_FDCWD, "./590/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 5046] unlink("./590/cgroup" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12260] <... rseq resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1222, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... unlink resumed>) = 0 [pid 12253] +++ killed by SIGIO +++ [pid 5049] close(3 [pid 12260] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... close resumed>) = 0 [pid 12260] <... set_robust_list resumed>) = 0 [pid 5049] rmdir("./600" [pid 5046] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12260] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12260] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./609", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1192, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 5046] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", [pid 12260] open(".", O_RDONLY [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] mkdir("./601", 0777 [pid 5046] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 12260] <... open resumed>) = 3 [pid 12254] +++ killed by SIGIO +++ [pid 5050] openat(AT_FDCWD, "./609", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... restart_syscall resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1165, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12260] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(3, "", [pid 12260] <... futex resumed>) = 1 [pid 12256] <... futex resumed>) = 0 [pid 5046] unlink("./590/cgroup.net" [pid 12260] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] umount2("./581", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12256] <... futex resumed>) = 0 [pid 12260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12256] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12260] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] close(3 [pid 12260] <... fcntl resumed>) = 0 [pid 5050] getdents64(3, [pid 5047] umount2("./595", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12260] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] rmdir("./590" [pid 12260] <... futex resumed>) = 1 [pid 12256] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 12260] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12256] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12256] <... futex resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] mkdir("./591", 0777) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12261 attached [pid 12260] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12256] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./609/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... openat resumed>) = 3 [pid 5045] newfstatat(3, "", ./strace-static-x86_64: Process 12262 attached [pid 12261] set_robust_list(0x555556ac56a0, 24 [pid 12260] <... openat resumed>) = 4 [pid 12256] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1204 [pid 5047] newfstatat(3, "", [pid 12262] set_robust_list(0x555556ac56a0, 24 [pid 12261] <... set_robust_list resumed>) = 0 [pid 12260] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12256] restart_syscall(<... resuming interrupted futex ...> [pid 5050] newfstatat(AT_FDCWD, "./609/cgroup.cpu", [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12262] <... set_robust_list resumed>) = 0 [pid 12256] <... restart_syscall resumed>) = ? [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1184 [pid 5045] getdents64(3, [pid 12262] chdir("./591" [pid 12261] chdir("./601" [pid 12260] +++ killed by SIGIO +++ [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./581/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./581/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./581/cgroup.cpu") = 0 [pid 5045] umount2("./581/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./581/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./581/binderfs") = 0 [pid 5045] umount2("./581/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./581/cgroup", [pid 12262] <... chdir resumed>) = 0 [pid 12261] <... chdir resumed>) = 0 [pid 12256] +++ killed by SIGIO +++ [pid 5050] unlink("./609/cgroup.cpu" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12262] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12261] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1223, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12262] <... prctl resumed>) = 0 [pid 12261] <... prctl resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] umount2("./595/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./581/cgroup" [pid 12261] setpgid(0, 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12262] setpgid(0, 0 [pid 12261] <... setpgid resumed>) = 0 [pid 5050] umount2("./609/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12262] <... setpgid resumed>) = 0 [pid 12261] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./595/cgroup.cpu", [pid 5050] newfstatat(AT_FDCWD, "./609/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] unlink("./609/binderfs" [pid 12262] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12261] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] unlink("./595/cgroup.cpu" [pid 5045] umount2("./581/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12262] <... symlink resumed>) = 0 [pid 5050] umount2("./609/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 12262] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12261] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 5051] umount2("./610", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./595/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./581/blkio.bfq.io_wait_time_recursive", [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12261] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./609/cgroup", [pid 12262] <... symlink resumed>) = 0 [pid 5051] openat(AT_FDCWD, "./610", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12261] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./609/cgroup") = 0 [pid 5050] umount2("./609/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./609/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./609/blkio.bfq.io_wait_time_recursive" [pid 5051] <... openat resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./595/binderfs", [pid 5050] <... unlink resumed>) = 0 [pid 5050] umount2("./609/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./609/cgroup.net", [pid 12261] <... symlink resumed>) = 0 [pid 5045] unlink("./581/blkio.bfq.io_wait_time_recursive" [pid 12262] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./609/cgroup.net" [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 12262] <... symlink resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] unlink("./595/binderfs" [pid 12261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] umount2("./581/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] close(3) = 0 [pid 5050] rmdir("./609" [pid 12262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12261] <... openat resumed>) = 3 [pid 5051] getdents64(3, [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12261] write(3, "1000", 4 [pid 5050] mkdir("./610", 0777 [pid 12262] <... openat resumed>) = 3 [pid 12261] <... write resumed>) = 4 [pid 5047] umount2("./595/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(AT_FDCWD, "./581/cgroup.net", [pid 12262] write(3, "1000", 4 [pid 12261] close(3 [pid 12262] <... write resumed>) = 4 [pid 12261] <... close resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12262] close(3 [pid 12261] symlink("/dev/binderfs", "./binderfs" [pid 5051] umount2("./610/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./595/cgroup", [pid 5045] unlink("./581/cgroup.net" [pid 12262] <... close resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12262] symlink("/dev/binderfs", "./binderfs" [pid 12261] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12263 attached [pid 12262] <... symlink resumed>) = 0 [pid 12261] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./610/cgroup.cpu", [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1224 [pid 5047] unlink("./595/cgroup" [pid 5045] getdents64(3, [pid 12262] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12261] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12262] <... futex resumed>) = 0 [pid 12261] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12262] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12261] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12262] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12261] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12261] <... mmap resumed>) = 0x7f504ff5f000 [pid 12262] <... mmap resumed>) = 0x7f504ff5f000 [pid 12261] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./610/cgroup.cpu" [pid 12262] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12262] <... mprotect resumed>) = 0 [pid 5045] close(3 [pid 12263] set_robust_list(0x555556ac56a0, 24 [pid 12262] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12261] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 12262] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12263] <... set_robust_list resumed>) = 0 [pid 12262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12261] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] umount2("./610/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./595/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./581" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12264 attached [pid 12263] chdir("./610" [pid 12261] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./610/binderfs", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12264] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12263] <... chdir resumed>) = 0 [pid 12262] <... clone3 resumed> => {parent_tid=[1185]}, 88) = 1185 [pid 12261] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12264] <... rseq resumed>) = 0 [pid 12263] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12262] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] newfstatat(AT_FDCWD, "./595/blkio.bfq.io_wait_time_recursive", [pid 5045] <... rmdir resumed>) = 0 [pid 12264] set_robust_list(0x7f504ff7f9a0, 24 [pid 12263] <... prctl resumed>) = 0 [pid 12262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./610/binderfs"./strace-static-x86_64: Process 12265 attached [pid 12264] <... set_robust_list resumed>) = 0 [pid 12263] setpgid(0, 0 [pid 12262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12261] <... clone3 resumed> => {parent_tid=[1205]}, 88) = 1205 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] mkdir("./582", 0777 [pid 12265] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12264] rt_sigprocmask(SIG_SETMASK, [], [pid 12263] <... setpgid resumed>) = 0 [pid 12262] <... futex resumed>) = 0 [pid 12261] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./610/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./595/blkio.bfq.io_wait_time_recursive" [pid 12265] <... rseq resumed>) = 0 [pid 12264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12263] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12265] set_robust_list(0x7f504ff7f9a0, 24 [pid 12264] open(".", O_RDONLY [pid 12265] <... set_robust_list resumed>) = 0 [pid 12261] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12265] rt_sigprocmask(SIG_SETMASK, [], [pid 12264] <... open resumed>) = 3 [pid 12263] <... symlink resumed>) = 0 [pid 12261] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./610/cgroup", [pid 5047] umount2("./595/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12264] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12263] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12265] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12261] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./610/cgroup" [pid 12265] open(".", O_RDONLY [pid 12264] <... futex resumed>) = 1 [pid 12263] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./595/cgroup.net", [pid 12262] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./595/cgroup.net" [pid 12262] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 12265] <... open resumed>) = 3 [pid 12263] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5047] <... close resumed>) = 0 [pid 5047] rmdir("./595" [pid 5051] umount2("./610/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12263] <... symlink resumed>) = 0 [pid 12264] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12265] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12265] <... futex resumed>) = 1 [pid 12261] <... futex resumed>) = 0 [pid 12263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 12266 attached [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1167 [pid 12266] set_robust_list(0x555556ac56a0, 24 [pid 12263] <... openat resumed>) = 3 [pid 12264] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12266] <... set_robust_list resumed>) = 0 [pid 12264] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12262] <... futex resumed>) = 0 [pid 5047] mkdir("./596", 0777 [pid 12266] chdir("./582" [pid 12265] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12263] write(3, "1000", 4 [pid 12262] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12261] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./610/blkio.bfq.io_wait_time_recursive", [pid 12265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12263] <... write resumed>) = 4 [pid 12261] <... futex resumed>) = 0 [pid 12265] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12266] <... chdir resumed>) = 0 [pid 12264] <... futex resumed>) = 0 [pid 12262] <... futex resumed>) = 1 [pid 12266] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12264] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12262] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12266] <... prctl resumed>) = 0 [pid 12265] <... fcntl resumed>) = 0 [pid 12264] <... openat resumed>) = 4 [pid 12261] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... mkdir resumed>) = 0 [pid 12266] setpgid(0, 0) = 0 [pid 12266] symlink("/syzcgroup/unified/syz1", "./cgroup") = 0 [pid 12265] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12263] close(3 [pid 12261] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12265] <... futex resumed>) = 0 [pid 12263] <... close resumed>) = 0 [pid 12261] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./610/blkio.bfq.io_wait_time_recursive" [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12265] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12263] symlink("/dev/binderfs", "./binderfs" [pid 12261] <... futex resumed>) = 0 [pid 12266] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12264] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12262] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12265] <... openat resumed>) = 4 [pid 12264] +++ killed by SIGIO +++ [pid 12266] <... symlink resumed>) = 0 [pid 12263] <... symlink resumed>) = 0 [pid 12262] +++ killed by SIGIO +++ [pid 5051] <... unlink resumed>) = 0 [pid 12265] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12261] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1184, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12263] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./610/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12263] <... futex resumed>) = 0 [pid 12266] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12263] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12265] <... futex resumed>) = ? [pid 12266] <... symlink resumed>) = 0 [pid 12263] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] newfstatat(AT_FDCWD, "./610/cgroup.net", [pid 12263] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12266] write(3, "1000", 4) = 4 [pid 12266] close(3) = 0 [pid 12266] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12266] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12266] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12266] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12263] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12267 attached [pid 12266] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12263] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] unlink("./610/cgroup.net" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12267] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12267] chdir("./596" [pid 12266] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 12268 attached [pid 12267] <... chdir resumed>) = 0 [pid 12266] <... clone3 resumed> => {parent_tid=[1168]}, 88) = 1168 [pid 12268] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12267] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12266] rt_sigprocmask(SIG_SETMASK, [], [pid 12268] <... rseq resumed>) = 0 [pid 12267] <... prctl resumed>) = 0 [pid 12266] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12268] set_robust_list(0x7f504ff7f9a0, 24 [pid 12267] setpgid(0, 0 [pid 12266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 12268] <... set_robust_list resumed>) = 0 [pid 12267] <... setpgid resumed>) = 0 [pid 12266] <... futex resumed>) = 0 [pid 12263] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] getdents64(3, [pid 5046] <... openat resumed>) = 3 [pid 12268] rt_sigprocmask(SIG_SETMASK, [], [pid 12267] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12266] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1194 [pid 12268] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12263] <... mprotect resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] newfstatat(3, "", [pid 12268] open(".", O_RDONLY [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12268] <... open resumed>) = 3 [pid 5051] close(3 [pid 5046] getdents64(3, [pid 12268] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12267] <... symlink resumed>) = 0 [pid 12263] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... close resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12268] <... futex resumed>) = 1 [pid 12266] <... futex resumed>) = 0 [pid 12263] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12263] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] rmdir("./610" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12269 attached [pid 12268] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 12269] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12266] <... futex resumed>) = 0 [pid 12269] <... rseq resumed>) = 0 [pid 12268] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12267] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12266] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12269] set_robust_list(0x7f504ff7f9a0, 24 [pid 12268] <... fcntl resumed>) = 0 [pid 12267] <... symlink resumed>) = 0 [pid 12263] <... clone3 resumed> => {parent_tid=[1225]}, 88) = 1225 [pid 5046] unlink("./591/cgroup.cpu" [pid 12269] <... set_robust_list resumed>) = 0 [pid 12263] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... rmdir resumed>) = 0 [pid 12269] rt_sigprocmask(SIG_SETMASK, [], [pid 12268] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12269] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12268] <... futex resumed>) = 1 [pid 12266] <... futex resumed>) = 0 [pid 12263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] mkdir("./611", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 12269] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12268] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12267] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12266] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12265] +++ killed by SIGIO +++ [pid 12261] +++ killed by SIGIO +++ [pid 5046] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12268] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12266] <... futex resumed>) = 0 [pid 12263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1204, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12268] <... openat resumed>) = 4 [pid 12263] <... futex resumed>) = 1 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12269] <... futex resumed>) = 0 [pid 12268] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12267] <... symlink resumed>) = 0 [pid 12266] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] newfstatat(AT_FDCWD, "./591/binderfs", [pid 12269] open(".", O_RDONLY [pid 12268] <... futex resumed>) = ? [pid 12267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] umount2("./601", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12268] +++ killed by SIGIO +++ [pid 12267] <... openat resumed>) = 3 ./strace-static-x86_64: Process 12270 attached [pid 12269] <... open resumed>) = 3 [pid 12267] write(3, "1000", 4 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./591/binderfs" [pid 5049] openat(AT_FDCWD, "./601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5049] newfstatat(3, "", [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1225 [pid 12267] <... write resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12269] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12267] close(3 [pid 12270] set_robust_list(0x555556ac56a0, 24 [pid 12269] <... futex resumed>) = 1 [pid 12267] <... close resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12266] +++ killed by SIGIO +++ [pid 12263] <... futex resumed>) = 0 [pid 12263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1167, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12270] <... set_robust_list resumed>) = 0 [pid 12269] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12267] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./582", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12267] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./591/cgroup", [pid 5045] <... openat resumed>) = 3 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12270] chdir("./611" [pid 5045] getdents64(3, [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./582/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./601/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12267] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] newfstatat(AT_FDCWD, "./582/cgroup.cpu", [pid 12270] <... chdir resumed>) = 0 [pid 12269] <... fcntl resumed>) = 0 [pid 12267] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./591/cgroup" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12269] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12267] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] newfstatat(AT_FDCWD, "./601/cgroup.cpu", [pid 5045] unlink("./582/cgroup.cpu" [pid 12270] <... prctl resumed>) = 0 [pid 12269] <... futex resumed>) = 1 [pid 12263] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12270] setpgid(0, 0 [pid 12269] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12267] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12263] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./601/cgroup.cpu" [pid 12269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12263] <... futex resumed>) = 0 [pid 5046] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./582/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12270] <... setpgid resumed>) = 0 [pid 12269] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12267] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12263] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./582/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./582/binderfs" [pid 12269] <... openat resumed>) = 4 [pid 5045] <... unlink resumed>) = 0 [pid 5045] umount2("./582/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./582/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./582/cgroup" [pid 12270] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", [pid 12269] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12270] <... symlink resumed>) = 0 [pid 12267] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./601/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12270] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12263] <... futex resumed>) = ? [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./582/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12270] <... symlink resumed>) = 0 [pid 12269] +++ killed by SIGIO +++ [pid 12267] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] newfstatat(AT_FDCWD, "./601/binderfs", [pid 5046] <... unlink resumed>) = 0 [pid 12267] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12267] <... mprotect resumed>) = 0 [pid 12263] +++ killed by SIGIO +++ [pid 5049] unlink("./601/binderfs" [pid 5045] newfstatat(AT_FDCWD, "./582/blkio.bfq.io_wait_time_recursive", [pid 12270] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5046] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12270] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./582/blkio.bfq.io_wait_time_recursive" [pid 5046] newfstatat(AT_FDCWD, "./591/cgroup.net", [pid 5045] <... unlink resumed>) = 0 [pid 12270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12267] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1224, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] <... unlink resumed>) = 0 [pid 5045] umount2("./582/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12267] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] umount2("./610", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12267] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./601/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./610", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./582/cgroup.net", [pid 12267] <... clone3 resumed> => {parent_tid=[1195]}, 88) = 1195 [pid 5050] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./601/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12271 attached [pid 12267] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./591/cgroup.net" [pid 12267] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./582/cgroup.net" [pid 12270] <... openat resumed>) = 3 [pid 12267] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] getdents64(3, [pid 12271] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12270] write(3, "1000", 4 [pid 12267] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] unlink("./601/cgroup" [pid 5046] <... unlink resumed>) = 0 [pid 12271] <... rseq resumed>) = 0 [pid 12270] <... write resumed>) = 4 [pid 12267] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 5050] umount2("./610/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 12270] close(3 [pid 12271] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12271] <... set_robust_list resumed>) = 0 [pid 12270] <... close resumed>) = 0 [pid 12270] symlink("/dev/binderfs", "./binderfs" [pid 12271] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] close(3 [pid 5050] newfstatat(AT_FDCWD, "./610/cgroup.cpu", [pid 5049] umount2("./601/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12271] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12270] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 5045] close(3 [pid 12271] open(".", O_RDONLY [pid 12270] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./610/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./601/blkio.bfq.io_wait_time_recursive", [pid 5046] rmdir("./591" [pid 5045] <... close resumed>) = 0 [pid 12271] <... open resumed>) = 3 [pid 12270] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./582" [pid 12270] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12271] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... rmdir resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12271] <... futex resumed>) = 1 [pid 12270] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] mkdir("./592", 0777 [pid 12270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12267] <... futex resumed>) = 0 [pid 5050] umount2("./610/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./601/blkio.bfq.io_wait_time_recursive" [pid 12267] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 12271] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12267] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./610/binderfs", [pid 5046] <... mkdir resumed>) = 0 [pid 5045] mkdir("./583", 0777 [pid 12271] <... fcntl resumed>) = 0 [pid 12270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12267] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12270] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./601/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 12270] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] unlink("./610/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./601/cgroup.net", [pid 12270] <... mprotect resumed>) = 0 [pid 12270] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... unlink resumed>) = 0 [pid 12271] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12270] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./610/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./610/cgroup", [pid 5049] unlink("./601/cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12271] <... futex resumed>) = 1 [pid 12267] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12273 attached ./strace-static-x86_64: Process 12272 attached [pid 12271] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12267] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./610/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1186 [pid 12273] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12272] set_robust_list(0x555556ac56a0, 24 [pid 12267] <... futex resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12273] <... rseq resumed>) = 0 [pid 12270] <... clone3 resumed> => {parent_tid=[1226]}, 88) = 1226 [pid 12267] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12273] set_robust_list(0x7f504ff7f9a0, 24 [pid 12272] <... set_robust_list resumed>) = 0 [pid 12270] rt_sigprocmask(SIG_SETMASK, [], [pid 12273] <... set_robust_list resumed>) = 0 [pid 12272] chdir("./592" [pid 12270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./610/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 12273] rt_sigprocmask(SIG_SETMASK, [], [pid 12270] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12273] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12272] <... chdir resumed>) = 0 [pid 12271] <... openat resumed>) = ? [pid 12270] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12274 attached [pid 12273] open(".", O_RDONLY [pid 12270] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12274] set_robust_list(0x555556ac56a0, 24 [pid 12273] <... open resumed>) = 3 [pid 12272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] newfstatat(AT_FDCWD, "./610/blkio.bfq.io_wait_time_recursive", [pid 5049] close(3 [pid 12274] <... set_robust_list resumed>) = 0 [pid 12273] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12272] <... prctl resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1169 [pid 12274] chdir("./583" [pid 12273] <... futex resumed>) = 1 [pid 12272] setpgid(0, 0 [pid 12270] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... close resumed>) = 0 [pid 12273] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12272] <... setpgid resumed>) = 0 [pid 12274] <... chdir resumed>) = 0 [pid 12273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12270] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] unlink("./610/blkio.bfq.io_wait_time_recursive" [pid 12274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12273] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12272] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12270] <... futex resumed>) = 0 [pid 12274] <... prctl resumed>) = 0 [pid 12273] <... fcntl resumed>) = 0 [pid 12270] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] rmdir("./601" [pid 12274] setpgid(0, 0 [pid 12273] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12274] <... setpgid resumed>) = 0 [pid 12273] <... futex resumed>) = 0 [pid 12270] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12274] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12273] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12270] <... futex resumed>) = 0 [pid 12273] <... openat resumed>) = 4 [pid 12272] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12274] <... symlink resumed>) = 0 [pid 5050] umount2("./610/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12274] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./610/cgroup.net", [pid 12274] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12273] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12270] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] unlink("./610/cgroup.net" [pid 12272] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12274] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12273] <... futex resumed>) = ? [pid 12274] <... symlink resumed>) = 0 [pid 12273] +++ killed by SIGIO +++ [pid 12272] <... symlink resumed>) = 0 [pid 12271] +++ killed by SIGIO +++ [pid 12267] +++ killed by SIGIO +++ [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./602", 0777 [pid 12274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1194, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12274] write(3, "1000", 4) = 4 [pid 5050] getdents64(3, [pid 12274] close(3) = 0 [pid 12272] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12274] symlink("/dev/binderfs", "./binderfs" [pid 5050] close(3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... close resumed>) = 0 [pid 12274] <... symlink resumed>) = 0 [pid 12272] <... symlink resumed>) = 0 [pid 12270] +++ killed by SIGIO +++ [pid 5050] rmdir("./610" [pid 12274] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1225, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5050] <... rmdir resumed>) = 0 [pid 12274] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] umount2("./596", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] umount2("./611", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] mkdir("./611", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12274] <... mmap resumed>) = 0x7f504ff5f000 [pid 12272] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12274] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... openat resumed>) = 3 [pid 12274] <... mprotect resumed>) = 0 [pid 12272] write(3, "1000", 4 [pid 5051] openat(AT_FDCWD, "./611", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(3, "", [pid 12272] <... write resumed>) = 4 ./strace-static-x86_64: Process 12275 attached [pid 12272] close(3 [pid 5051] <... openat resumed>) = 3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1206 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12275] set_robust_list(0x555556ac56a0, 24 [pid 12274] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12272] <... close resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 12272] symlink("/dev/binderfs", "./binderfs" [pid 5047] getdents64(3, [pid 12274] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12275] <... set_robust_list resumed>) = 0 [pid 12274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12272] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12274] <... clone3 resumed> => {parent_tid=[1170]}, 88) = 1170 [pid 12275] chdir("./602" [pid 5051] getdents64(3, [pid 5047] umount2("./596/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12275] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 12276 attached [pid 12275] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12274] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12276] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12275] <... prctl resumed>) = 0 [pid 12274] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12272] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12277 attached [pid 12276] <... rseq resumed>) = 0 [pid 12275] setpgid(0, 0 [pid 12274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./596/cgroup.cpu", [pid 12277] set_robust_list(0x555556ac56a0, 24 [pid 12276] set_robust_list(0x7f504ff7f9a0, 24 [pid 12274] <... futex resumed>) = 0 [pid 12272] <... futex resumed>) = 0 [pid 5051] umount2("./611/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12277] <... set_robust_list resumed>) = 0 [pid 12277] chdir("./611" [pid 12275] <... setpgid resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./596/cgroup.cpu" [pid 12276] <... set_robust_list resumed>) = 0 [pid 12272] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(AT_FDCWD, "./611/cgroup.cpu", [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1226 [pid 12277] <... chdir resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12272] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12277] <... prctl resumed>) = 0 [pid 12276] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] umount2("./596/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12277] setpgid(0, 0 [pid 12276] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] unlink("./611/cgroup.cpu" [pid 12277] <... setpgid resumed>) = 0 [pid 12277] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12276] open(".", O_RDONLY [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12275] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12272] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./596/binderfs", [pid 12276] <... open resumed>) = 3 [pid 12277] <... symlink resumed>) = 0 [pid 12272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./596/binderfs" [pid 5051] umount2("./611/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12277] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12272] <... mmap resumed>) = 0x7f504ff5f000 [pid 12277] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 12276] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12277] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12275] <... symlink resumed>) = 0 [pid 12272] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] newfstatat(AT_FDCWD, "./611/binderfs", [pid 12276] <... futex resumed>) = 1 [pid 12274] <... futex resumed>) = 0 [pid 12275] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12277] <... symlink resumed>) = 0 [pid 12274] <... futex resumed>) = 0 [pid 12272] <... mprotect resumed>) = 0 [pid 5047] umount2("./596/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./611/binderfs" [pid 12274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... unlink resumed>) = 0 [pid 12276] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./596/cgroup", [pid 12277] <... openat resumed>) = 3 [pid 12276] <... fcntl resumed>) = 0 [pid 12272] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12277] write(3, "1000", 4 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12277] <... write resumed>) = 4 [pid 12277] close(3) = 0 [pid 12277] symlink("/dev/binderfs", "./binderfs" [pid 12275] <... symlink resumed>) = 0 [pid 5051] umount2("./611/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./596/cgroup" [pid 12276] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12275] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12272] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12276] <... futex resumed>) = 1 [pid 12277] <... symlink resumed>) = 0 [pid 12276] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12275] <... symlink resumed>) = 0 [pid 12274] <... futex resumed>) = 0 [pid 12272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./611/cgroup", [pid 12274] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12277] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12274] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12277] <... futex resumed>) = 0 [pid 12276] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12277] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12277] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12277] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12277] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12276] <... openat resumed>) = 4 [pid 12277] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12277] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12278 attached [pid 12278] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] unlink("./611/cgroup" [pid 12278] <... rseq resumed>) = 0 [pid 12275] <... openat resumed>) = 3 [pid 5047] umount2("./596/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12279 attached [pid 12278] set_robust_list(0x7f504ff7f9a0, 24 [pid 12277] <... clone3 resumed> => {parent_tid=[1227]}, 88) = 1227 [pid 12279] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12278] <... set_robust_list resumed>) = 0 [pid 12277] rt_sigprocmask(SIG_SETMASK, [], [pid 12275] write(3, "1000", 4 [pid 12272] <... clone3 resumed> => {parent_tid=[1187]}, 88) = 1187 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12279] <... rseq resumed>) = 0 [pid 12278] rt_sigprocmask(SIG_SETMASK, [], [pid 12277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12276] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12275] <... write resumed>) = 4 [pid 12272] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./611/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./596/blkio.bfq.io_wait_time_recursive", [pid 12279] set_robust_list(0x7f504ff7f9a0, 24 [pid 12278] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12275] close(3 [pid 12274] <... futex resumed>) = ? [pid 12272] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12279] <... set_robust_list resumed>) = 0 [pid 12278] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12279] rt_sigprocmask(SIG_SETMASK, [], [pid 12277] <... futex resumed>) = 0 [pid 12279] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12279] open(".", O_RDONLY [pid 12275] <... close resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./611/blkio.bfq.io_wait_time_recursive", [pid 5047] unlink("./596/blkio.bfq.io_wait_time_recursive" [pid 12272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12279] <... open resumed>) = 3 [pid 12279] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12279] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12277] <... futex resumed>) = 0 [pid 12277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12279] <... futex resumed>) = 0 [pid 12277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12279] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12279] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12279] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12277] <... futex resumed>) = 0 [pid 12277] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12279] <... futex resumed>) = 0 [pid 12277] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12279] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 12275] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... unlink resumed>) = 0 [pid 12279] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12277] <... futex resumed>) = ? [pid 12279] +++ killed by SIGIO +++ [pid 12275] <... symlink resumed>) = 0 [pid 12276] +++ killed by SIGIO +++ [pid 12275] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12274] +++ killed by SIGIO +++ [pid 12272] <... futex resumed>) = 1 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./596/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12275] <... futex resumed>) = 0 [pid 12272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./611/blkio.bfq.io_wait_time_recursive" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12278] <... futex resumed>) = 0 [pid 12275] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./596/cgroup.net", [pid 12278] open(".", O_RDONLY [pid 12277] +++ killed by SIGIO +++ [pid 12275] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1169, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12278] <... open resumed>) = 3 [pid 12275] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1226, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./611/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12278] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12275] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] unlink("./596/cgroup.net" [pid 12278] <... futex resumed>) = 1 [pid 12275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12272] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./583", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12278] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12272] <... futex resumed>) = 0 [pid 5045] openat(AT_FDCWD, "./583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12278] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12275] <... mmap resumed>) = 0x7f504ff5f000 [pid 12272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./611/cgroup.net", [pid 5050] umount2("./611", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 12278] <... fcntl resumed>) = 0 [pid 12275] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 12278] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12275] <... mprotect resumed>) = 0 [pid 5051] unlink("./611/cgroup.net" [pid 5050] openat(AT_FDCWD, "./611", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(3, "", [pid 12278] <... futex resumed>) = 1 [pid 12272] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] close(3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12278] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12275] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12272] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 5047] <... close resumed>) = 0 [pid 5045] getdents64(3, [pid 12278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12275] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12272] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] rmdir("./596" [pid 12278] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12275] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12272] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 ./strace-static-x86_64: Process 12280 attached [pid 12278] <... openat resumed>) = 4 [pid 5047] <... rmdir resumed>) = 0 [pid 12280] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12275] <... clone3 resumed> => {parent_tid=[1207]}, 88) = 1207 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] umount2("./583/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12278] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12272] <... futex resumed>) = ? [pid 5045] newfstatat(AT_FDCWD, "./583/cgroup.cpu", [pid 12280] <... rseq resumed>) = 0 [pid 12278] +++ killed by SIGIO +++ [pid 12275] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] close(3 [pid 5050] umount2("./611/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] mkdir("./597", 0777 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12280] set_robust_list(0x7f504ff7f9a0, 24 [pid 12275] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... mkdir resumed>) = 0 [pid 12280] <... set_robust_list resumed>) = 0 [pid 12275] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] rmdir("./611" [pid 5050] newfstatat(AT_FDCWD, "./611/cgroup.cpu", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12280] rt_sigprocmask(SIG_SETMASK, [], [pid 12275] <... futex resumed>) = 0 [pid 12272] +++ killed by SIGIO +++ [pid 5051] <... rmdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./583/cgroup.cpu" [pid 12280] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12275] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] mkdir("./612", 0777 [pid 5050] unlink("./611/cgroup.cpu" [pid 12280] open(".", O_RDONLY [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12281 attached [pid 12280] <... open resumed>) = 3 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] umount2("./583/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] set_robust_list(0x555556ac56a0, 24 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./611/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1186, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12281] <... set_robust_list resumed>) = 0 [pid 12280] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1196 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] newfstatat(AT_FDCWD, "./583/binderfs", [pid 12281] chdir("./597" [pid 12280] <... futex resumed>) = 1 [pid 12275] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./611/binderfs", [pid 5046] <... restart_syscall resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12275] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12280] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12275] <... futex resumed>) = 0 [pid 5045] unlink("./583/binderfs" [pid 12280] <... fcntl resumed>) = 0 [pid 12275] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12282 attached [pid 12281] <... chdir resumed>) = 0 [pid 12282] set_robust_list(0x555556ac56a0, 24 [pid 12281] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12280] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1227 [pid 5050] unlink("./611/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 12282] <... set_robust_list resumed>) = 0 [pid 12281] <... prctl resumed>) = 0 [pid 12280] <... futex resumed>) = 1 [pid 12275] <... futex resumed>) = 0 [pid 12280] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12275] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12275] <... futex resumed>) = 0 [pid 12282] chdir("./612" [pid 12280] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12275] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] umount2("./583/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12282] <... chdir resumed>) = 0 [pid 12281] setpgid(0, 0 [pid 12280] <... openat resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12281] <... setpgid resumed>) = 0 [pid 12282] <... prctl resumed>) = 0 [pid 12281] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12280] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12275] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5050] umount2("./611/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12282] setpgid(0, 0 [pid 12281] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./583/cgroup", [pid 12282] <... setpgid resumed>) = 0 [pid 12280] +++ killed by SIGIO +++ [pid 5046] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12281] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5046] newfstatat(3, "", [pid 12282] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./611/cgroup", [pid 5045] unlink("./583/cgroup" [pid 5046] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 5045] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./611/cgroup" [pid 5045] umount2("./583/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] <... symlink resumed>) = 0 [pid 5046] unlink("./592/cgroup.cpu") = 0 [pid 12282] <... symlink resumed>) = 0 [pid 12281] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./583/blkio.bfq.io_wait_time_recursive", [pid 5046] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] <... symlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./592/binderfs", [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12282] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5045] unlink("./583/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./611/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12281] <... openat resumed>) = 3 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./592/binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12281] write(3, "1000", 4) = 4 [pid 5046] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] close(3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12281] <... close resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./611/blkio.bfq.io_wait_time_recursive", [pid 5045] umount2("./583/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./592/cgroup", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12282] <... symlink resumed>) = 0 [pid 12281] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./583/cgroup.net", [pid 5046] unlink("./592/cgroup" [pid 5050] unlink("./611/blkio.bfq.io_wait_time_recursive" [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12281] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12281] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12281] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12281] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12281] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12282] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", [pid 5045] unlink("./583/cgroup.net" [pid 12281] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./611/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12281] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./592/blkio.bfq.io_wait_time_recursive" [pid 5045] getdents64(3, [pid 12282] <... symlink resumed>) = 0 [pid 12281] <... mprotect resumed>) = 0 [pid 12275] +++ killed by SIGIO +++ [pid 5050] newfstatat(AT_FDCWD, "./611/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] close(3) = 0 [pid 12282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1206, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12281] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] unlink("./611/cgroup.net" [pid 5046] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] rmdir("./583" [pid 12282] <... openat resumed>) = 3 [pid 12282] write(3, "1000", 4 [pid 12281] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12282] <... write resumed>) = 4 [pid 12281] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... rmdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./592/cgroup.net", [pid 5045] mkdir("./584", 0777./strace-static-x86_64: Process 12283 attached [pid 12282] close(3 [pid 5050] getdents64(3, [pid 5049] umount2("./602", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12283] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12282] <... close resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] unlink("./592/cgroup.net" [pid 12283] <... rseq resumed>) = 0 [pid 12282] symlink("/dev/binderfs", "./binderfs" [pid 12281] <... clone3 resumed> => {parent_tid=[1197]}, 88) = 1197 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12283] set_robust_list(0x7f504ff7f9a0, 24 [pid 12281] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] close(3 [pid 5049] openat(AT_FDCWD, "./602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... unlink resumed>) = 0 [pid 12283] <... set_robust_list resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 12281] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... openat resumed>) = 3 [pid 5050] rmdir("./611" [pid 12283] rt_sigprocmask(SIG_SETMASK, [], [pid 12282] <... symlink resumed>) = 0 [pid 12281] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... rmdir resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5050] mkdir("./612", 0777 [pid 12283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12281] <... futex resumed>) = 0 [pid 12281] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] getdents64(3, [pid 12283] open(".", O_RDONLY [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12282] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12283] <... open resumed>) = 3 [pid 12282] <... futex resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] close(3) = 0 [pid 5046] rmdir("./592" [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... rmdir resumed>) = 0 [pid 12283] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12282] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12283] <... futex resumed>) = 1 [pid 12282] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12281] <... futex resumed>) = 0 [pid 12283] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12281] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./602/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12285 attached ./strace-static-x86_64: Process 12284 attached [pid 5046] mkdir("./593", 0777 [pid 12283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12281] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12283] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12282] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12281] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./602/cgroup.cpu", [pid 12283] <... fcntl resumed>) = 0 [pid 12282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12283] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12282] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] unlink("./602/cgroup.cpu" [pid 12282] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12283] <... futex resumed>) = 1 [pid 12282] <... mprotect resumed>) = 0 [pid 12281] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12283] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12282] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12281] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12281] <... futex resumed>) = 0 [pid 5049] umount2("./602/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12283] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12282] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12281] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12283] <... openat resumed>) = 4 [pid 12282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./602/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./602/binderfs"./strace-static-x86_64: Process 12286 attached [pid 12285] set_robust_list(0x555556ac56a0, 24 [pid 12284] set_robust_list(0x555556ac56a0, 24 [pid 12282] <... clone3 resumed> => {parent_tid=[1228]}, 88) = 1228 [pid 12281] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12283] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1228 [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1171 [pid 12286] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12285] <... set_robust_list resumed>) = 0 [pid 12284] <... set_robust_list resumed>) = 0 [pid 12285] chdir("./612" [pid 12282] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... unlink resumed>) = 0 [pid 12286] <... rseq resumed>) = 0 [pid 12284] chdir("./584" [pid 12282] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./602/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12286] set_robust_list(0x7f504ff7f9a0, 24 [pid 12285] <... chdir resumed>) = 0 [pid 12284] <... chdir resumed>) = 0 [pid 12282] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12286] <... set_robust_list resumed>) = 0 [pid 12285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12282] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./602/cgroup", [pid 12286] rt_sigprocmask(SIG_SETMASK, [], [pid 12285] <... prctl resumed>) = 0 [pid 12284] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12282] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12285] setpgid(0, 0 [pid 12284] <... prctl resumed>) = 0 [pid 5049] unlink("./602/cgroup" [pid 12286] open(".", O_RDONLY [pid 12285] <... setpgid resumed>) = 0 [pid 12284] setpgid(0, 0 [pid 5049] <... unlink resumed>) = 0 [pid 12286] <... open resumed>) = 3 [pid 12284] <... setpgid resumed>) = 0 [pid 5049] umount2("./602/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12285] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./602/blkio.bfq.io_wait_time_recursive", [pid 12284] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./602/blkio.bfq.io_wait_time_recursive" [pid 12285] <... symlink resumed>) = 0 [pid 12284] <... symlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12285] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12283] +++ killed by SIGIO +++ [pid 12284] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5049] umount2("./602/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12285] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./602/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12284] <... symlink resumed>) = 0 [pid 12285] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] unlink("./602/cgroup.net") = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 12284] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./602" [pid 12285] <... symlink resumed>) = 0 [pid 12285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12284] <... symlink resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5049] mkdir("./603", 0777 [pid 12285] <... openat resumed>) = 3 [pid 12284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12285] write(3, "1000", 4 [pid 12284] <... openat resumed>) = 3 [pid 12286] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12285] <... write resumed>) = 4 [pid 12284] write(3, "1000", 4 [pid 12285] close(3 [pid 12286] <... futex resumed>) = 1 [pid 12285] <... close resumed>) = 0 [pid 12284] <... write resumed>) = 4 [pid 12282] <... futex resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12286] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12285] symlink("/dev/binderfs", "./binderfs" [pid 12284] close(3 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1188 [pid 12284] <... close resumed>) = 0 [pid 12282] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12286] <... futex resumed>) = 0 [pid 12285] <... symlink resumed>) = 0 [pid 12284] symlink("/dev/binderfs", "./binderfs" [pid 12282] <... futex resumed>) = 1 [pid 12286] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12282] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12286] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 12287 attached [pid 12284] <... symlink resumed>) = 0 [pid 12287] set_robust_list(0x555556ac56a0, 24 [pid 12285] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12281] +++ killed by SIGIO +++ [pid 12284] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12287] <... set_robust_list resumed>) = 0 [pid 12286] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12285] <... futex resumed>) = 0 [pid 12284] <... futex resumed>) = 0 [pid 12287] chdir("./593" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1196, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12284] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12287] <... chdir resumed>) = 0 [pid 12286] <... futex resumed>) = 1 [pid 12282] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12288 attached [pid 12287] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12286] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12285] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12284] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12282] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12288] set_robust_list(0x555556ac56a0, 24 [pid 12287] <... prctl resumed>) = 0 [pid 12286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12285] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12282] <... futex resumed>) = 0 [pid 12284] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12287] setpgid(0, 0 [pid 12286] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12284] <... mmap resumed>) = 0x7f504ff5f000 [pid 12288] <... set_robust_list resumed>) = 0 [pid 12287] <... setpgid resumed>) = 0 [pid 12285] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12284] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12282] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12288] chdir("./603" [pid 12285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12284] <... mprotect resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1208 [pid 5047] umount2("./597", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12288] <... chdir resumed>) = 0 [pid 12287] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12286] <... openat resumed>) = 4 [pid 12285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12284] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12282] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12288] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12287] <... symlink resumed>) = 0 [pid 12286] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12285] <... mmap resumed>) = 0x7f504ff5f000 [pid 12282] ???( [pid 5047] openat(AT_FDCWD, "./597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12288] <... prctl resumed>) = 0 [pid 12287] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12285] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12284] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12282] <... ??? resumed>) = ? [pid 5047] <... openat resumed>) = 3 [pid 12288] setpgid(0, 0 [pid 12287] <... symlink resumed>) = 0 [pid 12286] +++ killed by SIGIO +++ [pid 12285] <... mprotect resumed>) = 0 [pid 12282] +++ killed by SIGIO +++ [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, [pid 12284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12285] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./597/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12285] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12288] <... setpgid resumed>) = 0 [pid 12285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12284] <... clone3 resumed> => {parent_tid=[1172]}, 88) = 1172 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./597/cgroup.cpu", [pid 12285] <... clone3 resumed> => {parent_tid=[1229]}, 88) = 1229 [pid 12288] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12285] rt_sigprocmask(SIG_SETMASK, [], [pid 12284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12287] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12288] <... symlink resumed>) = 0 [pid 12287] <... symlink resumed>) = 0 [pid 12285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12285] <... futex resumed>) = 0 [pid 12284] <... futex resumed>) = 0 [pid 12284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12289 attached [pid 5047] unlink("./597/cgroup.cpu" [pid 12289] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12288] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12290 attached [pid 12289] <... rseq resumed>) = 0 [pid 12288] <... symlink resumed>) = 0 [pid 12287] <... openat resumed>) = 3 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1227, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12290] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12289] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] umount2("./597/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12289] <... set_robust_list resumed>) = 0 [pid 12288] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12290] <... rseq resumed>) = 0 [pid 12289] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] umount2("./612", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./597/binderfs", [pid 12290] set_robust_list(0x7f504ff7f9a0, 24 [pid 12289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12287] write(3, "1000", 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12290] <... set_robust_list resumed>) = 0 [pid 12289] open(".", O_RDONLY [pid 12288] <... symlink resumed>) = 0 [pid 12287] <... write resumed>) = 4 [pid 5051] openat(AT_FDCWD, "./612", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./597/binderfs" [pid 12290] rt_sigprocmask(SIG_SETMASK, [], [pid 12289] <... open resumed>) = 3 [pid 12288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12287] close(3 [pid 5051] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 12290] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12289] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12290] open(".", O_RDONLY [pid 12287] <... close resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 12290] <... open resumed>) = 3 [pid 12289] <... futex resumed>) = 1 [pid 12288] <... openat resumed>) = 3 [pid 12287] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] umount2("./597/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12290] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12289] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12287] <... symlink resumed>) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] umount2("./612/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./612/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12290] <... futex resumed>) = 1 [pid 12284] <... futex resumed>) = 0 [pid 12290] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12288] write(3, "1000", 4 [pid 12287] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./612/cgroup.cpu" [pid 12288] <... write resumed>) = 4 [pid 12287] <... futex resumed>) = 0 [pid 12285] <... futex resumed>) = 0 [pid 12284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12289] <... futex resumed>) = 0 [pid 12288] close(3 [pid 12287] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12284] <... futex resumed>) = 1 [pid 12289] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12288] <... close resumed>) = 0 [pid 12287] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12285] <... futex resumed>) = 1 [pid 12284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./597/cgroup", [pid 12290] <... futex resumed>) = 0 [pid 12289] <... fcntl resumed>) = 0 [pid 12288] symlink("/dev/binderfs", "./binderfs" [pid 12285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12290] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12289] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12287] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] umount2("./612/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12290] <... fcntl resumed>) = 0 [pid 12289] <... futex resumed>) = 1 [pid 12288] <... symlink resumed>) = 0 [pid 12287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12284] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12290] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12289] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] unlink("./597/cgroup" [pid 12290] <... futex resumed>) = 1 [pid 12289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12288] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12287] <... mmap resumed>) = 0x7f504ff5f000 [pid 12285] <... futex resumed>) = 0 [pid 12284] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./612/binderfs", [pid 12290] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12289] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12288] <... futex resumed>) = 0 [pid 12285] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12284] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12288] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12285] <... futex resumed>) = 0 [pid 12284] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12289] <... openat resumed>) = 4 [pid 12288] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12287] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12285] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] unlink("./612/binderfs" [pid 5047] umount2("./597/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12290] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12289] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12288] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12287] <... mprotect resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12288] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./597/blkio.bfq.io_wait_time_recursive", [pid 12290] <... openat resumed>) = 4 [pid 12288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12287] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12284] <... futex resumed>) = ? [pid 12289] +++ killed by SIGIO +++ [pid 12288] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] umount2("./612/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12288] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12291 attached [pid 12290] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12287] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./597/blkio.bfq.io_wait_time_recursive" [pid 12291] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12287] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./612/cgroup", [pid 12285] <... futex resumed>) = ? ./strace-static-x86_64: Process 12292 attached [pid 12287] <... clone3 resumed> => {parent_tid=[1189]}, 88) = 1189 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12288] <... clone3 resumed> => {parent_tid=[1209]}, 88) = 1209 [pid 12288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12288] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12288] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12292] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12287] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] unlink("./612/cgroup" [pid 12292] <... rseq resumed>) = 0 [pid 12287] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12292] set_robust_list(0x7f504ff7f9a0, 24 [pid 12291] <... rseq resumed>) = 0 [pid 12287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./597/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12292] <... set_robust_list resumed>) = 0 [pid 12291] set_robust_list(0x7f504ff7f9a0, 24 [pid 12287] <... futex resumed>) = 0 [pid 12290] +++ killed by SIGIO +++ [pid 12285] +++ killed by SIGIO +++ [pid 12284] +++ killed by SIGIO +++ [pid 5051] umount2("./612/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12292] rt_sigprocmask(SIG_SETMASK, [], [pid 12291] <... set_robust_list resumed>) = 0 [pid 12287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1228, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] newfstatat(AT_FDCWD, "./597/cgroup.net", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1171, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12291] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./612/blkio.bfq.io_wait_time_recursive", [pid 5045] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./584", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./597/cgroup.net" [pid 5045] openat(AT_FDCWD, "./584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12291] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./612/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./612", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] getdents64(3, [pid 5045] <... openat resumed>) = 3 [pid 12292] open(".", O_RDONLY [pid 12291] open(".", O_RDONLY [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] close(3 [pid 5045] getdents64(3, [pid 12292] <... open resumed>) = 3 [pid 5047] <... close resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12292] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./612/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./612", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12291] <... open resumed>) = 3 [pid 12292] <... futex resumed>) = 1 [pid 5047] rmdir("./597" [pid 5045] umount2("./584/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./584/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./584/cgroup.cpu" [pid 5050] newfstatat(3, "", [pid 5047] <... rmdir resumed>) = 0 [pid 12287] <... futex resumed>) = 0 [pid 12292] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12292] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12291] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(AT_FDCWD, "./612/cgroup.net", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] mkdir("./598", 0777 [pid 12292] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12291] <... futex resumed>) = 1 [pid 12287] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12292] <... fcntl resumed>) = 0 [pid 12287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12292] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12288] <... futex resumed>) = 0 [pid 12287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5045] <... unlink resumed>) = 0 [pid 12292] <... futex resumed>) = 0 [pid 12291] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12288] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12287] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./612/cgroup.net" [pid 5045] umount2("./584/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12292] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12291] <... fcntl resumed>) = 0 [pid 12288] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12288] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./584/binderfs", [pid 12287] <... futex resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12291] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./584/binderfs" [pid 12291] <... futex resumed>) = 1 [pid 12288] <... futex resumed>) = 0 [pid 12287] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... mkdir resumed>) = 0 [pid 12291] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12288] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 12291] <... futex resumed>) = 0 [pid 12288] <... futex resumed>) = 1 [pid 12291] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12292] <... openat resumed>) = 4 [pid 12288] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12287] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] getdents64(3, [pid 5050] umount2("./612/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] umount2("./584/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12291] <... openat resumed>) = 4 [pid 12288] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) ./strace-static-x86_64: Process 12293 attached [pid 12292] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12291] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12288] restart_syscall(<... resuming interrupted futex ...> [pid 12287] ???( [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12293] set_robust_list(0x555556ac56a0, 24 [pid 12288] <... restart_syscall resumed>) = ? [pid 12287] <... ??? resumed>) = ? [pid 5051] close(3 [pid 5050] newfstatat(AT_FDCWD, "./612/cgroup.cpu", [pid 5045] newfstatat(AT_FDCWD, "./584/cgroup", [pid 12293] <... set_robust_list resumed>) = 0 [pid 12292] +++ killed by SIGIO +++ [pid 12291] +++ killed by SIGIO +++ [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1198 [pid 12287] +++ killed by SIGIO +++ [pid 5051] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] rmdir("./612" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./584/cgroup" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1188, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12293] chdir("./598" [pid 5045] <... unlink resumed>) = 0 [pid 12293] <... chdir resumed>) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./612/cgroup.cpu" [pid 12293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12288] +++ killed by SIGIO +++ [pid 5051] mkdir("./613", 0777 [pid 5045] umount2("./584/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12293] <... prctl resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1208, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./584/blkio.bfq.io_wait_time_recursive", [pid 12293] setpgid(0, 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] umount2("./612/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12293] <... setpgid resumed>) = 0 [pid 12293] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./584/blkio.bfq.io_wait_time_recursive" [pid 12293] <... symlink resumed>) = 0 [pid 12293] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu") = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12293] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 12293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12293] write(3, "1000", 4) = 4 [pid 12293] close(3) = 0 [pid 12293] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] newfstatat(AT_FDCWD, "./612/binderfs", [pid 5049] umount2("./603", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./593", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./584/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12293] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12293] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12293] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1229 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12293] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12293] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12293] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] openat(AT_FDCWD, "./603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5049] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] getdents64(3, ./strace-static-x86_64: Process 12295 attached [pid 12293] <... clone3 resumed> => {parent_tid=[1199]}, 88) = 1199 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] openat(AT_FDCWD, "./593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./584/cgroup.net", [pid 12295] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12293] rt_sigprocmask(SIG_SETMASK, [], [pid 12295] <... rseq resumed>) = 0 [pid 12293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] umount2("./603/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12295] set_robust_list(0x7f504ff7f9a0, 24 [pid 12293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12295] <... set_robust_list resumed>) = 0 [pid 12293] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./603/cgroup.cpu", [pid 12295] rt_sigprocmask(SIG_SETMASK, [], [pid 12293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12295] open(".", O_RDONLY [pid 5049] unlink("./603/cgroup.cpu") = 0 [pid 12295] <... open resumed>) = 3 [pid 12295] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12295] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12293] <... futex resumed>) = 0 [pid 12293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./603/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12295] <... futex resumed>) = 0 [pid 12293] <... futex resumed>) = 1 [pid 12295] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12295] <... fcntl resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./603/binderfs", [pid 12295] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12295] <... futex resumed>) = 1 [pid 12293] <... futex resumed>) = 0 [pid 12295] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12293] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./603/binderfs" [pid 12295] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 12293] <... futex resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5049] umount2("./603/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./603/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12295] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] unlink("./603/cgroup" [pid 12293] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... openat resumed>) = 3 [pid 12295] +++ killed by SIGIO +++ [pid 12293] <... futex resumed>) = ? [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12294 attached [pid 5050] unlink("./612/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] unlink("./584/cgroup.net" [pid 12294] set_robust_list(0x555556ac56a0, 24 [pid 5046] getdents64(3, [pid 5049] umount2("./603/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./603/blkio.bfq.io_wait_time_recursive", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./603/blkio.bfq.io_wait_time_recursive" [pid 12294] <... set_robust_list resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5046] umount2("./593/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12294] chdir("./613" [pid 5050] umount2("./612/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./593/cgroup.cpu", [pid 5045] close(3 [pid 5050] newfstatat(AT_FDCWD, "./612/cgroup", [pid 5049] umount2("./603/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./603/cgroup.net", [pid 5050] unlink("./612/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./593/cgroup.cpu" [pid 5045] rmdir("./584" [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./603/cgroup.net") = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 5045] <... rmdir resumed>) = 0 [pid 5050] umount2("./612/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./593/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./585", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... close resumed>) = 0 [pid 5049] rmdir("./603" [pid 5050] newfstatat(AT_FDCWD, "./612/blkio.bfq.io_wait_time_recursive", [pid 5049] <... rmdir resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... mkdir resumed>) = 0 [pid 12294] <... chdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12294] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] unlink("./612/blkio.bfq.io_wait_time_recursive" [pid 5046] newfstatat(AT_FDCWD, "./593/binderfs", [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12294] <... prctl resumed>) = 0 [pid 5049] mkdir("./604", 0777 [pid 12294] setpgid(0, 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12294] <... setpgid resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12294] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 5046] unlink("./593/binderfs" [pid 12294] <... symlink resumed>) = 0 [pid 5050] umount2("./612/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12293] +++ killed by SIGIO +++ ./strace-static-x86_64: Process 12296 attached [pid 12294] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5046] umount2("./593/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12296] set_robust_list(0x555556ac56a0, 24 [pid 12294] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./612/cgroup.net", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1173 ./strace-static-x86_64: Process 12297 attached [pid 12296] <... set_robust_list resumed>) = 0 [pid 12294] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1198, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./593/cgroup", [pid 12297] set_robust_list(0x555556ac56a0, 24 [pid 12296] chdir("./585" [pid 12294] <... symlink resumed>) = 0 [pid 5050] unlink("./612/cgroup.net" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12297] <... set_robust_list resumed>) = 0 [pid 12296] <... chdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1210 [pid 5046] unlink("./593/cgroup" [pid 12297] chdir("./604" [pid 12296] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 12297] <... chdir resumed>) = 0 [pid 12296] <... prctl resumed>) = 0 [pid 12294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] umount2("./593/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12296] setpgid(0, 0 [pid 12294] <... openat resumed>) = 3 [pid 5050] close(3 [pid 5047] umount2("./598", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12297] <... prctl resumed>) = 0 [pid 12296] <... setpgid resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./593/blkio.bfq.io_wait_time_recursive", [pid 5050] <... close resumed>) = 0 [pid 12297] setpgid(0, 0 [pid 12296] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12294] write(3, "1000", 4 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12297] <... setpgid resumed>) = 0 [pid 12294] <... write resumed>) = 4 [pid 5050] rmdir("./612" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12297] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12294] close(3 [pid 5047] openat(AT_FDCWD, "./598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12297] <... symlink resumed>) = 0 [pid 12296] <... symlink resumed>) = 0 [pid 12294] <... close resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5046] unlink("./593/blkio.bfq.io_wait_time_recursive" [pid 12297] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12296] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12294] symlink("/dev/binderfs", "./binderfs" [pid 12297] <... symlink resumed>) = 0 [pid 12296] <... symlink resumed>) = 0 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12297] symlink("/syzcgroup/net/syz3", "./cgroup.net") = 0 [pid 5047] getdents64(3, [pid 12297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12296] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12294] <... symlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 5050] mkdir("./613", 0777 [pid 12297] <... openat resumed>) = 3 [pid 12294] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12297] write(3, "1000", 4 [pid 5047] umount2("./598/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./593/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12297] <... write resumed>) = 4 [pid 12296] <... symlink resumed>) = 0 [pid 12294] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12297] close(3 [pid 12296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12294] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... mkdir resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./598/cgroup.cpu", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12297] <... close resumed>) = 0 [pid 12297] symlink("/dev/binderfs", "./binderfs" [pid 12294] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] newfstatat(AT_FDCWD, "./593/cgroup.net", [pid 12294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] unlink("./598/cgroup.cpu" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12297] <... symlink resumed>) = 0 [pid 12296] <... openat resumed>) = 3 [pid 12294] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12297] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12296] write(3, "1000", 4 [pid 12294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./593/cgroup.net" [pid 12297] <... futex resumed>) = 0 [pid 12296] <... write resumed>) = 4 [pid 12294] <... mmap resumed>) = 0x7f504ff5f000 [pid 12297] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12294] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12298 attached [pid 12297] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12296] close(3 [pid 5047] umount2("./598/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12298] set_robust_list(0x555556ac56a0, 24 [pid 12297] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12296] <... close resumed>) = 0 [pid 12294] <... mprotect resumed>) = 0 [pid 12298] <... set_robust_list resumed>) = 0 [pid 12297] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12296] symlink("/dev/binderfs", "./binderfs" [pid 12294] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1230 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] getdents64(3, [pid 12297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12298] chdir("./613" [pid 12297] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] newfstatat(AT_FDCWD, "./598/binderfs", [pid 12296] <... symlink resumed>) = 0 [pid 12294] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12297] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12298] <... chdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] close(3 [pid 12298] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12297] <... mprotect resumed>) = 0 [pid 12296] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] unlink("./598/binderfs" [pid 5046] <... close resumed>) = 0 ./strace-static-x86_64: Process 12299 attached [pid 12298] <... prctl resumed>) = 0 [pid 12299] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12298] setpgid(0, 0 [pid 12297] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12296] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] rmdir("./593" [pid 12299] <... rseq resumed>) = 0 [pid 12298] <... setpgid resumed>) = 0 [pid 12298] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12297] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12296] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12294] <... clone3 resumed> => {parent_tid=[1230]}, 88) = 1230 [pid 12299] set_robust_list(0x7f504ff7f9a0, 24 [pid 5047] umount2("./598/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12299] <... set_robust_list resumed>) = 0 [pid 12298] <... symlink resumed>) = 0 [pid 12297] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12296] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12294] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12300 attached [pid 12299] rt_sigprocmask(SIG_SETMASK, [], [pid 12298] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12294] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./594", 0777 [pid 12300] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12299] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12297] <... clone3 resumed> => {parent_tid=[1211]}, 88) = 1211 [pid 12296] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12294] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12300] <... rseq resumed>) = 0 [pid 12297] rt_sigprocmask(SIG_SETMASK, [], [pid 12296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12294] <... futex resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./598/cgroup", [pid 12300] set_robust_list(0x7f504ff7f9a0, 24 [pid 12299] open(".", O_RDONLY [pid 12297] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12296] <... mmap resumed>) = 0x7f504ff5f000 [pid 12294] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12297] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12296] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12300] <... set_robust_list resumed>) = 0 [pid 12298] <... symlink resumed>) = 0 [pid 12297] <... futex resumed>) = 0 [pid 12296] <... mprotect resumed>) = 0 [pid 12298] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12297] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12300] rt_sigprocmask(SIG_SETMASK, [], [pid 12299] <... open resumed>) = 3 [pid 12296] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] unlink("./598/cgroup" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12300] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12299] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] <... symlink resumed>) = 0 [pid 12296] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12300] open(".", O_RDONLY [pid 12298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12301 attached [pid 12300] <... open resumed>) = 3 [pid 12299] <... futex resumed>) = 1 [pid 12294] <... futex resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12298] <... openat resumed>) = 3 [pid 12300] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12299] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12294] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./598/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12301] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12300] <... futex resumed>) = 1 [pid 12299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12297] <... futex resumed>) = 0 [pid 12296] <... clone3 resumed> => {parent_tid=[1174]}, 88) = 1174 [pid 12294] <... futex resumed>) = 0 [pid 12300] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12299] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12297] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12294] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12302 attached [pid 12301] <... rseq resumed>) = 0 [pid 12300] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12299] <... fcntl resumed>) = 0 [pid 12298] write(3, "1000", 4 [pid 12297] <... futex resumed>) = 0 [pid 12296] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] newfstatat(AT_FDCWD, "./598/blkio.bfq.io_wait_time_recursive", [pid 12302] set_robust_list(0x555556ac56a0, 24 [pid 12301] set_robust_list(0x7f504ff7f9a0, 24 [pid 12300] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12299] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] <... write resumed>) = 4 [pid 12297] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12296] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1190 [pid 12302] <... set_robust_list resumed>) = 0 [pid 12301] <... set_robust_list resumed>) = 0 [pid 12300] <... fcntl resumed>) = 0 [pid 12299] <... futex resumed>) = 1 [pid 12298] close(3 [pid 12296] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12294] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12302] chdir("./594" [pid 12300] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12299] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12301] rt_sigprocmask(SIG_SETMASK, [], [pid 12298] <... close resumed>) = 0 [pid 12296] <... futex resumed>) = 0 [pid 12294] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./598/blkio.bfq.io_wait_time_recursive" [pid 12302] <... chdir resumed>) = 0 [pid 12301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12300] <... futex resumed>) = 1 [pid 12299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12298] symlink("/dev/binderfs", "./binderfs" [pid 12297] <... futex resumed>) = 0 [pid 12302] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12299] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12294] <... futex resumed>) = 0 [pid 12302] <... prctl resumed>) = 0 [pid 12302] setpgid(0, 0) = 0 [pid 12298] <... symlink resumed>) = 0 [pid 12302] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12299] <... openat resumed>) = 4 [pid 12302] <... symlink resumed>) = 0 [pid 12302] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 12302] <... symlink resumed>) = 0 [pid 12300] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12298] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12297] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12296] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12301] open(".", O_RDONLY [pid 5047] umount2("./598/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12302] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 12300] <... openat resumed>) = 4 [pid 12294] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12301] <... open resumed>) = 3 [pid 12298] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12298] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] newfstatat(AT_FDCWD, "./598/cgroup.net", [pid 12298] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12301] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12301] <... futex resumed>) = 1 [pid 12298] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12296] <... futex resumed>) = 0 [pid 12302] write(3, "1000", 4) = 4 [pid 12302] close(3) = 0 [pid 12302] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12301] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12296] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12302] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12297] <... futex resumed>) = 0 [pid 12300] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12296] <... futex resumed>) = 0 [pid 12301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12302] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12296] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] unlink("./598/cgroup.net" [pid 12301] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12298] <... mmap resumed>) = 0x7f504ff5f000 [pid 12302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... unlink resumed>) = 0 [pid 12302] <... mmap resumed>) = 0x7f504ff5f000 [pid 12301] <... fcntl resumed>) = 0 [pid 12298] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12302] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12301] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12296] <... futex resumed>) = 0 [pid 12300] +++ killed by SIGIO +++ [pid 12301] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12296] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12302] <... mprotect resumed>) = 0 [pid 12301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12299] +++ killed by SIGIO +++ [pid 12298] <... mprotect resumed>) = 0 [pid 12297] +++ killed by SIGIO +++ [pid 12296] <... futex resumed>) = 0 [pid 12294] +++ killed by SIGIO +++ [pid 5047] getdents64(3, [pid 12302] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12301] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12298] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1229, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12302] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12296] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12301] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12303 attached [pid 12302] <... clone3 resumed> => {parent_tid=[1191]}, 88) = 1191 [pid 12298] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12296] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12301] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1210, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] close(3 [pid 12302] rt_sigprocmask(SIG_SETMASK, [], [pid 12298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./613", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... close resumed>) = 0 [pid 12302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] rmdir("./598" [pid 12302] <... futex resumed>) = 0 [pid 12301] +++ killed by SIGIO +++ [pid 12302] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 12304 attached [pid 12303] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./604", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... rmdir resumed>) = 0 [pid 12304] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12303] <... rseq resumed>) = 0 [pid 12304] <... rseq resumed>) = 0 [pid 12303] set_robust_list(0x7f504ff7f9a0, 24 [pid 12298] <... clone3 resumed> => {parent_tid=[1231]}, 88) = 1231 [pid 5051] openat(AT_FDCWD, "./613", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./599", 0777 [pid 12304] set_robust_list(0x7f504ff7f9a0, 24 [pid 12303] <... set_robust_list resumed>) = 0 [pid 12298] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... openat resumed>) = 3 [pid 12304] <... set_robust_list resumed>) = 0 [pid 12303] rt_sigprocmask(SIG_SETMASK, [], [pid 12298] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] newfstatat(3, "", [pid 12304] rt_sigprocmask(SIG_SETMASK, [], [pid 12303] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12303] open(".", O_RDONLY [pid 5049] openat(AT_FDCWD, "./604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... mkdir resumed>) = 0 [pid 12304] open(".", O_RDONLY [pid 12298] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 12304] <... open resumed>) = 3 [pid 12303] <... open resumed>) = 3 [pid 12298] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... openat resumed>) = 3 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(3, "", [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] umount2("./613/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12304] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12303] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12304] <... futex resumed>) = 1 [pid 12303] <... futex resumed>) = 1 [pid 12302] <... futex resumed>) = 0 [pid 12298] <... futex resumed>) = 0 [pid 12304] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12303] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12304] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12304] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12302] <... futex resumed>) = 0 [pid 12298] <... futex resumed>) = 0 [pid 12304] <... fcntl resumed>) = 0 [pid 12303] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12302] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12304] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./613/cgroup.cpu", [pid 5049] getdents64(3, [pid 12304] <... futex resumed>) = 0 [pid 12303] <... fcntl resumed>) = 0 [pid 12298] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12304] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12305 attached [pid 12304] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12303] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12296] +++ killed by SIGIO +++ [pid 5051] unlink("./613/cgroup.cpu" [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12304] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12303] <... futex resumed>) = 1 [pid 12302] <... futex resumed>) = 0 [pid 12298] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 12305] set_robust_list(0x555556ac56a0, 24 [pid 5049] umount2("./604/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1200 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1173, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12305] <... set_robust_list resumed>) = 0 [pid 12304] <... openat resumed>) = 4 [pid 12303] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12302] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12298] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] umount2("./613/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 12305] chdir("./599" [pid 12304] chdir("./613" [pid 12303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12302] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./604/cgroup.cpu", [pid 12305] <... chdir resumed>) = 0 [pid 12304] +++ killed by SIGIO +++ [pid 12303] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12302] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./613/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... restart_syscall resumed>) = 0 [pid 12305] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./604/cgroup.cpu" [pid 12305] <... prctl resumed>) = 0 [pid 5051] unlink("./613/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 12305] setpgid(0, 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./604/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12305] <... setpgid resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12305] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5049] newfstatat(AT_FDCWD, "./604/binderfs", [pid 12303] <... openat resumed>) = 4 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./585", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12305] <... symlink resumed>) = 0 [pid 5051] umount2("./613/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./604/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./613/cgroup", [pid 12305] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12305] <... symlink resumed>) = 0 [pid 12303] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... openat resumed>) = 3 [pid 12302] <... futex resumed>) = ? [pid 5051] unlink("./613/cgroup" [pid 5049] umount2("./604/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] newfstatat(3, "", [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12305] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5049] newfstatat(AT_FDCWD, "./604/cgroup", [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12305] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] umount2("./613/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./613/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./604/cgroup" [pid 12305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] unlink("./613/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 12305] <... openat resumed>) = 3 [pid 5051] <... unlink resumed>) = 0 [pid 5045] getdents64(3, [pid 12305] write(3, "1000", 4) = 4 [pid 5049] umount2("./604/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12305] close(3 [pid 5051] umount2("./613/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12305] <... close resumed>) = 0 [pid 12298] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./604/blkio.bfq.io_wait_time_recursive", [pid 12305] symlink("/dev/binderfs", "./binderfs" [pid 5051] newfstatat(AT_FDCWD, "./613/cgroup.net", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12305] <... symlink resumed>) = 0 [pid 12303] +++ killed by SIGIO +++ [pid 12302] +++ killed by SIGIO +++ [pid 5045] umount2("./585/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1230, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./585/cgroup.cpu", [pid 12305] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./604/blkio.bfq.io_wait_time_recursive" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1190, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12305] <... futex resumed>) = 0 [pid 5051] unlink("./613/cgroup.net" [pid 5050] umount2("./613", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12305] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./585/cgroup.cpu" [pid 12305] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 5050] openat(AT_FDCWD, "./613", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] umount2("./604/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... unlink resumed>) = 0 [pid 12305] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5046] umount2("./594", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./585/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] close(3 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] getdents64(3, [pid 5045] newfstatat(AT_FDCWD, "./585/binderfs", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] newfstatat(AT_FDCWD, "./604/cgroup.net", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] umount2("./613/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... close resumed>) = 0 [pid 5046] openat(AT_FDCWD, "./594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12305] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./585/binderfs" [pid 12305] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] newfstatat(AT_FDCWD, "./613/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5051] rmdir("./613" [pid 12305] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./604/cgroup.net" [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./613/cgroup.cpu" [pid 5046] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 5051] mkdir("./614", 0777 [pid 12305] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... mkdir resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./585/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] umount2("./613/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12305] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] getdents64(3, [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] newfstatat(AT_FDCWD, "./585/cgroup", ./strace-static-x86_64: Process 12307 attached ./strace-static-x86_64: Process 12306 attached [pid 5050] newfstatat(AT_FDCWD, "./613/binderfs", [pid 5049] close(3 [pid 12306] set_robust_list(0x555556ac56a0, 24 [pid 12307] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12306] <... set_robust_list resumed>) = 0 [pid 12305] <... clone3 resumed> => {parent_tid=[1201]}, 88) = 1201 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1231 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... close resumed>) = 0 [pid 5046] umount2("./594/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12307] <... rseq resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12305] rt_sigprocmask(SIG_SETMASK, [], [pid 12307] set_robust_list(0x7f504ff7f9a0, 24 [pid 5050] unlink("./613/binderfs" [pid 12305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12307] <... set_robust_list resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./594/cgroup.cpu", [pid 5045] unlink("./585/cgroup" [pid 12307] rt_sigprocmask(SIG_SETMASK, [], [pid 12306] chdir("./614" [pid 12305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] rmdir("./604" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12306] <... chdir resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12306] setpgid(0, 0) = 0 [pid 12306] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] mkdir("./605", 0777) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12307] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12305] <... futex resumed>) = 0 [pid 5046] unlink("./594/cgroup.cpu" [pid 5050] umount2("./613/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./585/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12307] open(".", O_RDONLY [pid 12306] <... symlink resumed>) = 0 [pid 12305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12307] <... open resumed>) = 3 [pid 5050] newfstatat(AT_FDCWD, "./613/cgroup", [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12307] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./585/blkio.bfq.io_wait_time_recursive", ./strace-static-x86_64: Process 12308 attached [pid 12307] <... futex resumed>) = 1 [pid 12306] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12305] <... futex resumed>) = 0 [pid 5050] unlink("./613/cgroup" [pid 5046] umount2("./594/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12308] set_robust_list(0x555556ac56a0, 24 [pid 12307] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12306] <... symlink resumed>) = 0 [pid 12305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./585/blkio.bfq.io_wait_time_recursive" [pid 12308] <... set_robust_list resumed>) = 0 [pid 12307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12306] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12305] <... futex resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1212 [pid 12308] chdir("./605" [pid 12307] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] umount2("./613/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./594/binderfs", [pid 5045] <... unlink resumed>) = 0 [pid 12308] <... chdir resumed>) = 0 [pid 12307] <... fcntl resumed>) = 0 [pid 12306] <... symlink resumed>) = 0 [pid 12308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12307] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./585/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12308] <... prctl resumed>) = 0 [pid 12307] <... futex resumed>) = 1 [pid 12306] <... openat resumed>) = 3 [pid 12305] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./613/blkio.bfq.io_wait_time_recursive", [pid 5046] unlink("./594/binderfs" [pid 12308] setpgid(0, 0 [pid 12307] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12306] write(3, "1000", 4 [pid 12305] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12308] <... setpgid resumed>) = 0 [pid 12307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12306] <... write resumed>) = 4 [pid 12305] <... futex resumed>) = 0 [pid 5050] unlink("./613/blkio.bfq.io_wait_time_recursive" [pid 5045] newfstatat(AT_FDCWD, "./585/cgroup.net", [pid 5046] <... unlink resumed>) = 0 [pid 12307] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12305] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12308] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12306] close(3 [pid 5046] umount2("./594/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12306] <... close resumed>) = 0 [pid 12308] <... symlink resumed>) = 0 [pid 12306] symlink("/dev/binderfs", "./binderfs" [pid 12307] <... openat resumed>) = 4 [pid 5050] <... unlink resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./585/cgroup.net" [pid 12308] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 12306] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./594/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 12305] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12305] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./613/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12306] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12308] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12306] <... futex resumed>) = 0 [pid 12308] <... symlink resumed>) = 0 [pid 12306] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12306] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12306] <... mmap resumed>) = 0x7f504ff5f000 [pid 12308] <... openat resumed>) = 3 [pid 12306] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] unlink("./594/cgroup" [pid 5050] newfstatat(AT_FDCWD, "./613/cgroup.net", [pid 5045] close(3 [pid 12306] <... mprotect resumed>) = 0 [pid 12308] write(3, "1000", 4 [pid 5046] <... unlink resumed>) = 0 [pid 12308] <... write resumed>) = 4 [pid 12306] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 12308] close(3 [pid 5045] rmdir("./585" [pid 5050] unlink("./613/cgroup.net" [pid 12308] <... close resumed>) = 0 [pid 12308] symlink("/dev/binderfs", "./binderfs" [pid 12306] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12308] <... symlink resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 12306] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12308] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12309 attached [pid 12308] <... futex resumed>) = 0 [pid 12306] <... clone3 resumed> => {parent_tid=[1232]}, 88) = 1232 [pid 12309] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12308] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12306] rt_sigprocmask(SIG_SETMASK, [], [pid 12309] <... rseq resumed>) = 0 [pid 12308] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12306] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12309] set_robust_list(0x7f504ff7f9a0, 24 [pid 12308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12306] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12309] <... set_robust_list resumed>) = 0 [pid 12308] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12306] <... futex resumed>) = 0 [pid 12309] rt_sigprocmask(SIG_SETMASK, [], [pid 12308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12309] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12306] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12309] open(".", O_RDONLY [pid 12308] <... mmap resumed>) = 0x7f504ff5f000 [pid 12308] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12309] <... open resumed>) = 3 [pid 12307] +++ killed by SIGIO +++ [pid 12305] +++ killed by SIGIO +++ [pid 5050] getdents64(3, [pid 5046] umount2("./594/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12308] <... mprotect resumed>) = 0 [pid 5045] mkdir("./586", 0777 [pid 12308] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1200, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12308] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] umount2("./599", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] close(3 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./594/blkio.bfq.io_wait_time_recursive", [pid 5045] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12310 attached [pid 12308] <... clone3 resumed> => {parent_tid=[1213]}, 88) = 1213 [pid 5050] <... close resumed>) = 0 [pid 5047] openat(AT_FDCWD, "./599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12310] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12309] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12308] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] rmdir("./613" [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12309] <... futex resumed>) = 1 [pid 12306] <... futex resumed>) = 0 [pid 5046] unlink("./594/blkio.bfq.io_wait_time_recursive" [pid 12310] <... rseq resumed>) = 0 [pid 12308] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... openat resumed>) = 3 [pid 12310] set_robust_list(0x7f504ff7f9a0, 24 [pid 12308] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(3, "", [pid 12310] <... set_robust_list resumed>) = 0 [pid 12308] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12310] rt_sigprocmask(SIG_SETMASK, [], [pid 12308] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 12310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12310] open(".", O_RDONLY [pid 5047] umount2("./599/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12310] <... open resumed>) = 3 [pid 5047] newfstatat(AT_FDCWD, "./599/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12310] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12308] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12311 attached [pid 12310] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12309] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12306] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] unlink("./599/cgroup.cpu" [pid 5046] umount2("./594/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12311] set_robust_list(0x555556ac56a0, 24 [pid 12310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12308] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12306] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12311] <... set_robust_list resumed>) = 0 [pid 12310] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12309] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12308] <... futex resumed>) = 0 [pid 5050] mkdir("./614", 0777 [pid 5047] <... unlink resumed>) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1175 [pid 12311] chdir("./586" [pid 12310] <... fcntl resumed>) = 0 [pid 12309] <... fcntl resumed>) = 0 [pid 12306] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./594/cgroup.net", [pid 12309] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5050] <... mkdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12310] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12309] <... futex resumed>) = 0 [pid 12308] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12306] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] umount2("./599/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./594/cgroup.net" [pid 12311] <... chdir resumed>) = 0 [pid 12310] <... futex resumed>) = 0 [pid 12309] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12306] <... futex resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12310] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12308] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] newfstatat(AT_FDCWD, "./599/binderfs", [pid 12311] <... prctl resumed>) = 0 [pid 12310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12308] <... futex resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12311] setpgid(0, 0 [pid 12310] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12308] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12310] <... openat resumed>) = 4 [pid 12309] <... openat resumed>) = 4 [pid 5047] unlink("./599/binderfs") = 0 [pid 12311] <... setpgid resumed>) = 0 [pid 5047] umount2("./599/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12311] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12311] <... symlink resumed>) = 0 [pid 12310] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12308] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5047] newfstatat(AT_FDCWD, "./599/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./599/cgroup" [pid 12306] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, ./strace-static-x86_64: Process 12312 attached [pid 12311] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12310] +++ killed by SIGIO +++ [pid 12309] symlink("", "./cgroup.cpu" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12309] <... symlink resumed>) = ? [pid 12309] +++ killed by SIGIO +++ [pid 5046] close(3 [pid 5047] umount2("./599/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1232 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... close resumed>) = 0 [pid 12312] set_robust_list(0x555556ac56a0, 24 [pid 5046] rmdir("./594" [pid 5047] newfstatat(AT_FDCWD, "./599/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./599/blkio.bfq.io_wait_time_recursive") = 0 [pid 5047] umount2("./599/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12311] <... symlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./599/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./599/cgroup.net") = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3) = 0 [pid 5047] rmdir("./599") = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5047] mkdir("./600", 0777 [pid 12312] <... set_robust_list resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12308] +++ killed by SIGIO +++ [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1212, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 12312] chdir("./614" [pid 12311] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5046] mkdir("./595", 0777 [pid 12312] <... chdir resumed>) = 0 [pid 5049] <... restart_syscall resumed>) = 0 [pid 12311] <... symlink resumed>) = 0 [pid 5049] umount2("./605", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12313 attached ) = -1 EINVAL (Invalid argument) [pid 12313] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5049] openat(AT_FDCWD, "./605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1202 [pid 12312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... openat resumed>) = 3 [pid 5046] <... mkdir resumed>) = 0 [pid 12313] chdir("./600") = 0 [pid 12313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12313] setpgid(0, 0 [pid 5049] newfstatat(3, "", [pid 12313] <... setpgid resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12313] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12312] <... prctl resumed>) = 0 [pid 12313] <... symlink resumed>) = 0 [pid 12312] setpgid(0, 0 [pid 12311] <... openat resumed>) = 3 [pid 12306] +++ killed by SIGIO +++ [pid 5049] getdents64(3, [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12313] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12312] <... setpgid resumed>) = 0 [pid 12311] write(3, "1000", 4 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12313] <... symlink resumed>) = 0 [pid 12312] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12311] <... write resumed>) = 4 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1231, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5049] umount2("./605/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12314 attached [pid 12313] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12312] <... symlink resumed>) = 0 [pid 12311] close(3 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1192 [pid 12314] set_robust_list(0x555556ac56a0, 24 [pid 12313] <... symlink resumed>) = 0 [pid 12312] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12311] <... close resumed>) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./605/cgroup.cpu", [pid 12314] <... set_robust_list resumed>) = 0 [pid 12313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12311] symlink("/dev/binderfs", "./binderfs" [pid 12312] <... symlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12312] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12314] chdir("./595" [pid 12311] <... symlink resumed>) = 0 [pid 5049] unlink("./605/cgroup.cpu") = 0 [pid 5051] umount2("./614", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12312] <... symlink resumed>) = 0 [pid 12312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12313] <... openat resumed>) = 3 [pid 12312] <... openat resumed>) = 3 [pid 12311] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12314] <... chdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./605/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] openat(AT_FDCWD, "./614", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12313] write(3, "1000", 4 [pid 12311] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12314] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12313] <... write resumed>) = 4 [pid 12312] write(3, "1000", 4 [pid 12311] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./605/binderfs", [pid 12314] <... prctl resumed>) = 0 [pid 12313] close(3 [pid 12311] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12312] <... write resumed>) = 4 [pid 12312] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12313] <... close resumed>) = 0 [pid 12312] <... close resumed>) = 0 [pid 12311] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(3, "", [pid 12312] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12312] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12312] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12312] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12314] setpgid(0, 0) = 0 [pid 12311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12313] symlink("/dev/binderfs", "./binderfs" [pid 5049] unlink("./605/binderfs" [pid 12312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12314] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12315 attached [pid 12315] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12312] <... clone3 resumed> => {parent_tid=[1233]}, 88) = 1233 [pid 12315] set_robust_list(0x7f504ff7f9a0, 24 [pid 12312] rt_sigprocmask(SIG_SETMASK, [], [pid 12315] <... set_robust_list resumed>) = 0 [pid 12312] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] getdents64(3, [pid 12315] rt_sigprocmask(SIG_SETMASK, [], [pid 12311] <... mmap resumed>) = 0x7f504ff5f000 [pid 12315] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12312] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12315] open(".", O_RDONLY [pid 12313] <... symlink resumed>) = 0 [pid 12311] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12312] <... futex resumed>) = 0 [pid 12315] <... open resumed>) = 3 [pid 12314] <... symlink resumed>) = 0 [pid 12312] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./614/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./605/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12313] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12311] <... mprotect resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12314] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] newfstatat(AT_FDCWD, "./614/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12315] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12312] <... futex resumed>) = 0 [pid 12315] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12312] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12314] <... symlink resumed>) = 0 [pid 12312] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./605/cgroup", [pid 12315] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12312] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12315] <... fcntl resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./605/cgroup" [pid 12313] <... futex resumed>) = 0 [pid 5051] unlink("./614/cgroup.cpu" [pid 12315] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12312] <... futex resumed>) = 0 [pid 12315] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12312] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12312] <... futex resumed>) = 0 [pid 12315] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12312] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12313] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... unlink resumed>) = 0 [pid 12314] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12315] <... openat resumed>) = 4 [pid 12311] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] umount2("./605/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12312] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12315] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12311] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12314] <... symlink resumed>) = 0 [pid 12313] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] umount2("./614/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12316 attached [pid 12314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./605/blkio.bfq.io_wait_time_recursive", [pid 12316] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12314] <... openat resumed>) = 3 [pid 12313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12311] <... clone3 resumed> => {parent_tid=[1176]}, 88) = 1176 [pid 5051] newfstatat(AT_FDCWD, "./614/binderfs", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12316] <... rseq resumed>) = 0 [pid 12314] write(3, "1000", 4 [pid 12313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12311] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./605/blkio.bfq.io_wait_time_recursive" [pid 12316] set_robust_list(0x7f504ff7f9a0, 24 [pid 12314] <... write resumed>) = 4 [pid 12313] <... mmap resumed>) = 0x7f504ff5f000 [pid 12311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] unlink("./614/binderfs" [pid 5049] <... unlink resumed>) = 0 [pid 12316] <... set_robust_list resumed>) = 0 [pid 12314] close(3 [pid 12313] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12316] rt_sigprocmask(SIG_SETMASK, [], [pid 12315] +++ killed by SIGIO +++ [pid 12314] <... close resumed>) = 0 [pid 12313] <... mprotect resumed>) = 0 [pid 12312] +++ killed by SIGIO +++ [pid 12311] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5049] umount2("./605/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12314] symlink("/dev/binderfs", "./binderfs" [pid 12313] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12311] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12316] open(".", O_RDONLY [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1232, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12316] <... open resumed>) = 3 [pid 5050] umount2("./614", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12316] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] openat(AT_FDCWD, "./614", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12316] <... futex resumed>) = 1 [pid 12314] <... symlink resumed>) = 0 [pid 12313] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12311] <... futex resumed>) = 0 [pid 5051] umount2("./614/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... openat resumed>) = 3 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12316] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12311] <... futex resumed>) = 0 [pid 5050] newfstatat(3, "", [pid 12313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] newfstatat(AT_FDCWD, "./605/cgroup.net", [pid 12316] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12311] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12316] <... fcntl resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12316] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12311] <... futex resumed>) = 0 [pid 5050] getdents64(3, ./strace-static-x86_64: Process 12317 attached [pid 12316] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12317] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12311] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./605/cgroup.net" [pid 12317] <... rseq resumed>) = 0 [pid 12316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12313] <... clone3 resumed> => {parent_tid=[1203]}, 88) = 1203 [pid 12311] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./614/cgroup", [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... unlink resumed>) = 0 [pid 12317] set_robust_list(0x7f504ff7f9a0, 24 [pid 12316] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12314] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12313] rt_sigprocmask(SIG_SETMASK, [], [pid 12311] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12314] <... futex resumed>) = 0 [pid 12313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] getdents64(3, [pid 12314] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12314] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12313] <... futex resumed>) = 0 [pid 12314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12313] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] close(3 [pid 12314] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12316] <... openat resumed>) = 4 [pid 12314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... close resumed>) = 0 [pid 12314] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] rmdir("./605" [pid 5050] umount2("./614/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./614/cgroup" [pid 12317] <... set_robust_list resumed>) = 0 [pid 12316] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12311] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12317] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12317] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12314] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... rmdir resumed>) = 0 [pid 12314] <... mprotect resumed>) = 0 [pid 5049] mkdir("./606", 0777 [pid 12314] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... mkdir resumed>) = 0 [pid 12314] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12318 attached [pid 12314] <... clone3 resumed> => {parent_tid=[1193]}, 88) = 1193 [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./614/cgroup.cpu", [pid 12318] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12318] <... rseq resumed>) = 0 [pid 12314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12318] set_robust_list(0x7f504ff7f9a0, 24 [pid 12317] open(".", O_RDONLY [pid 12314] <... futex resumed>) = 0 [pid 5050] unlink("./614/cgroup.cpu" [pid 5051] umount2("./614/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12318] <... set_robust_list resumed>) = 0 [pid 12318] rt_sigprocmask(SIG_SETMASK, [], [pid 12314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12318] open(".", O_RDONLY) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./614/blkio.bfq.io_wait_time_recursive", [pid 5050] umount2("./614/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12318] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12314] <... futex resumed>) = 0 [pid 12318] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12319 attached [pid 12317] <... open resumed>) = 3 [pid 12316] +++ killed by SIGIO +++ [pid 12311] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1214 [pid 12318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12317] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12314] <... futex resumed>) = 0 [pid 12318] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12318] <... fcntl resumed>) = 0 [pid 12317] <... futex resumed>) = 1 [pid 12313] <... futex resumed>) = 0 [pid 5051] unlink("./614/blkio.bfq.io_wait_time_recursive" [pid 5050] newfstatat(AT_FDCWD, "./614/binderfs", [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1175, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12318] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12317] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12318] <... futex resumed>) = 1 [pid 12314] <... futex resumed>) = 0 [pid 12313] <... futex resumed>) = 0 [pid 12318] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12314] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12313] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12314] <... futex resumed>) = 0 [pid 12318] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12319] set_robust_list(0x555556ac56a0, 24 [pid 12318] <... openat resumed>) = 4 [pid 12317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12314] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12319] <... set_robust_list resumed>) = 0 [pid 12317] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5050] unlink("./614/binderfs" [pid 5045] umount2("./586", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12317] <... fcntl resumed>) = 0 [pid 12318] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12317] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12314] <... futex resumed>) = ? [pid 12318] +++ killed by SIGIO +++ [pid 12317] <... futex resumed>) = 1 [pid 12313] <... futex resumed>) = 0 [pid 12317] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12313] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] umount2("./614/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12319] chdir("./606" [pid 12317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12313] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./614/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12319] <... chdir resumed>) = 0 [pid 12317] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12319] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] newfstatat(AT_FDCWD, "./614/cgroup.net", [pid 5050] newfstatat(AT_FDCWD, "./614/cgroup", [pid 12319] <... prctl resumed>) = 0 [pid 12317] <... openat resumed>) = 4 [pid 12314] +++ killed by SIGIO +++ [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 12319] setpgid(0, 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1192, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12319] <... setpgid resumed>) = 0 [pid 5046] restart_syscall(<... resuming interrupted clone ...> [pid 5045] getdents64(3, [pid 5051] unlink("./614/cgroup.net" [pid 5046] <... restart_syscall resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12319] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5051] <... unlink resumed>) = 0 [pid 12319] <... symlink resumed>) = 0 [pid 5050] unlink("./614/cgroup") = 0 [pid 5046] umount2("./595", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] umount2("./586/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] getdents64(3, [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12317] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] umount2("./614/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] openat(AT_FDCWD, "./595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./586/cgroup.cpu", [pid 12319] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12313] <... futex resumed>) = ? [pid 5051] close(3 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... close resumed>) = 0 [pid 5045] unlink("./586/cgroup.cpu" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./614/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./614/blkio.bfq.io_wait_time_recursive" [pid 5045] <... unlink resumed>) = 0 [pid 12319] <... symlink resumed>) = 0 [pid 5051] rmdir("./614" [pid 5046] newfstatat(3, "", [pid 5045] umount2("./586/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./586/binderfs", [pid 12319] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5046] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./595/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12319] <... symlink resumed>) = 0 [pid 5051] mkdir("./615", 0777 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./586/binderfs" [pid 12319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] <... unlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./595/cgroup.cpu", [pid 5045] <... unlink resumed>) = 0 [pid 12319] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12319] write(3, "1000", 4 [pid 5045] umount2("./586/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./595/cgroup.cpu" [pid 12319] <... write resumed>) = 4 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./586/cgroup", [pid 5050] umount2("./614/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./614/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./614/cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12319] close(3 [pid 5046] umount2("./595/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./586/cgroup" [pid 12319] <... close resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12319] symlink("/dev/binderfs", "./binderfs" [pid 5046] newfstatat(AT_FDCWD, "./595/binderfs", [pid 12319] <... symlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 12319] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./586/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12320 attached [pid 12319] <... futex resumed>) = 0 [pid 5046] unlink("./595/binderfs" [pid 12320] set_robust_list(0x555556ac56a0, 24 [pid 12317] +++ killed by SIGIO +++ [pid 12313] +++ killed by SIGIO +++ [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1233 [pid 5050] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12320] <... set_robust_list resumed>) = 0 [pid 12319] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... close resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1202, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5046] <... unlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./586/blkio.bfq.io_wait_time_recursive", [pid 12320] chdir("./615" [pid 12319] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] rmdir("./614" [pid 5046] umount2("./595/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12320] <... chdir resumed>) = 0 [pid 12319] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... rmdir resumed>) = 0 [pid 5045] unlink("./586/blkio.bfq.io_wait_time_recursive" [pid 12320] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12319] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] mkdir("./615", 0777 [pid 12320] <... prctl resumed>) = 0 [pid 12319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./595/cgroup", [pid 5045] <... unlink resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12319] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12320] setpgid(0, 0 [pid 5047] umount2("./600", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12319] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12320] <... setpgid resumed>) = 0 [pid 5046] unlink("./595/cgroup" [pid 5045] umount2("./586/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12320] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 12321 attached ) = 3 [pid 12321] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1234 [pid 5045] newfstatat(AT_FDCWD, "./586/cgroup.net", [pid 12321] <... set_robust_list resumed>) = 0 [pid 12320] <... symlink resumed>) = 0 [pid 5046] umount2("./595/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12321] chdir("./615" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12320] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5047] newfstatat(3, "", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] unlink("./586/cgroup.net" [pid 12321] <... chdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12321] setpgid(0, 0) = 0 [pid 5046] newfstatat(AT_FDCWD, "./595/blkio.bfq.io_wait_time_recursive", [pid 5045] <... unlink resumed>) = 0 [pid 12321] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5047] getdents64(3, [pid 12320] <... symlink resumed>) = 0 [pid 12319] <... mprotect resumed>) = 0 [pid 12321] <... symlink resumed>) = 0 [pid 12319] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12321] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu") = 0 [pid 12319] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12319] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12322 attached [pid 12320] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] unlink("./595/blkio.bfq.io_wait_time_recursive" [pid 5045] getdents64(3, [pid 12322] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12321] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12319] <... clone3 resumed> => {parent_tid=[1215]}, 88) = 1215 [pid 12322] set_robust_list(0x7f504ff7f9a0, 24 [pid 12321] <... symlink resumed>) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12319] rt_sigprocmask(SIG_SETMASK, [], [pid 12321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12319] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12321] <... openat resumed>) = 3 [pid 12319] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12319] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12322] <... set_robust_list resumed>) = 0 [pid 12321] write(3, "1000", 4) = 4 [pid 12321] close(3) = 0 [pid 12321] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 12322] rt_sigprocmask(SIG_SETMASK, [], [pid 12321] <... symlink resumed>) = 0 [pid 12320] <... symlink resumed>) = 0 [pid 5047] umount2("./600/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] close(3 [pid 12322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12321] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... close resumed>) = 0 [pid 12321] <... futex resumed>) = 0 [pid 12321] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12322] open(".", O_RDONLY [pid 12321] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./600/cgroup.cpu", [pid 5045] rmdir("./586" [pid 12321] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12321] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12321] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] unlink("./600/cgroup.cpu" [pid 12322] <... open resumed>) = 3 [pid 12321] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12320] <... openat resumed>) = 3 [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./595/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./587", 0777 [pid 12322] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12323 attached [pid 12322] <... futex resumed>) = 1 [pid 12320] write(3, "1000", 4 [pid 12319] <... futex resumed>) = 0 [pid 5047] umount2("./600/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12323] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12322] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12321] <... clone3 resumed> => {parent_tid=[1235]}, 88) = 1235 [pid 12320] <... write resumed>) = 4 [pid 12319] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12323] <... rseq resumed>) = 0 [pid 12322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12321] rt_sigprocmask(SIG_SETMASK, [], [pid 12320] close(3 [pid 12319] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./595/cgroup.net", [pid 5045] <... mkdir resumed>) = 0 [pid 12323] set_robust_list(0x7f504ff7f9a0, 24 [pid 12322] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12320] <... close resumed>) = 0 [pid 12319] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./600/binderfs", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12323] <... set_robust_list resumed>) = 0 [pid 12322] <... fcntl resumed>) = 0 [pid 12321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12320] symlink("/dev/binderfs", "./binderfs" [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12323] rt_sigprocmask(SIG_SETMASK, [], [pid 12322] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12321] <... futex resumed>) = 0 [pid 12320] <... symlink resumed>) = 0 [pid 12323] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12322] <... futex resumed>) = 1 [pid 12321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12319] <... futex resumed>) = 0 [pid 5047] unlink("./600/binderfs" [pid 12323] open(".", O_RDONLY [pid 12322] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12320] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 12323] <... open resumed>) = 3 [pid 12322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12319] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./595/cgroup.net" [pid 12323] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12322] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12320] <... futex resumed>) = 0 [pid 12319] <... futex resumed>) = 0 ./strace-static-x86_64: Process 12324 attached [pid 12323] <... futex resumed>) = 1 [pid 12322] <... openat resumed>) = 4 [pid 12321] <... futex resumed>) = 0 [pid 12320] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] umount2("./600/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 12323] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12320] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1177 [pid 12324] set_robust_list(0x555556ac56a0, 24 [pid 12320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 12323] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12322] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12321] <... futex resumed>) = 0 [pid 12320] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12319] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12324] <... set_robust_list resumed>) = 0 [pid 12323] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12322] <... futex resumed>) = -1 (errno 18446744073709551544) [pid 12321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] newfstatat(AT_FDCWD, "./600/cgroup", [pid 5046] <... close resumed>) = 0 [pid 12323] <... fcntl resumed>) = 0 [pid 12322] +++ killed by SIGIO +++ [pid 12320] <... mmap resumed>) = 0x7f504ff5f000 [pid 12324] chdir("./587" [pid 12323] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12320] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] rmdir("./595" [pid 12324] <... chdir resumed>) = 0 [pid 12323] <... futex resumed>) = 1 [pid 12321] <... futex resumed>) = 0 [pid 12320] <... mprotect resumed>) = 0 [pid 5047] unlink("./600/cgroup" [pid 5046] <... rmdir resumed>) = 0 [pid 12324] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12323] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12321] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... unlink resumed>) = 0 [pid 12324] <... prctl resumed>) = 0 [pid 12324] setpgid(0, 0 [pid 5046] mkdir("./596", 0777 [pid 12324] <... setpgid resumed>) = 0 [pid 12323] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12321] <... futex resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12324] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12323] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12321] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12320] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12319] +++ killed by SIGIO +++ [pid 5047] umount2("./600/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12323] <... openat resumed>) = 4 [pid 12320] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1214, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12323] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12321] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) ./strace-static-x86_64: Process 12325 attached [pid 12320] <... clone3 resumed> => {parent_tid=[1234]}, 88) = 1234 [pid 12325] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12324] <... symlink resumed>) = 0 [pid 12323] +++ killed by SIGIO +++ [pid 12325] <... rseq resumed>) = 0 [pid 12320] rt_sigprocmask(SIG_SETMASK, [], [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./600/blkio.bfq.io_wait_time_recursive", [pid 12325] set_robust_list(0x7f504ff7f9a0, 24 [pid 12320] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12325] <... set_robust_list resumed>) = 0 [pid 12320] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12325] rt_sigprocmask(SIG_SETMASK, [], [pid 12320] <... futex resumed>) = 0 [pid 12325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12320] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./606", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12325] open(".", O_RDONLY [pid 12324] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./600/blkio.bfq.io_wait_time_recursive" [pid 12325] <... open resumed>) = 3 [pid 5049] openat(AT_FDCWD, "./606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 12326 attached [pid 5047] <... unlink resumed>) = 0 [pid 12325] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... openat resumed>) = 3 [pid 5047] umount2("./600/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1194 [pid 12326] set_robust_list(0x555556ac56a0, 24 [pid 12325] <... futex resumed>) = 1 [pid 12324] <... symlink resumed>) = 0 [pid 12320] <... futex resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12326] <... set_robust_list resumed>) = 0 [pid 12325] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12324] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12320] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./600/cgroup.net", [pid 12326] chdir("./596" [pid 12325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12324] <... symlink resumed>) = 0 [pid 12321] +++ killed by SIGIO +++ [pid 12320] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12325] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12320] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1234, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] unlink("./600/cgroup.net" [pid 12326] <... chdir resumed>) = 0 [pid 12325] <... fcntl resumed>) = 0 [pid 12324] <... openat resumed>) = 3 [pid 5049] umount2("./606/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12325] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12324] write(3, "1000", 4 [pid 5047] <... unlink resumed>) = 0 [pid 12326] <... prctl resumed>) = 0 [pid 12325] <... futex resumed>) = 1 [pid 12324] <... write resumed>) = 4 [pid 12320] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] getdents64(3, [pid 12326] setpgid(0, 0 [pid 12325] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12324] close(3 [pid 12320] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./606/cgroup.cpu", [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12326] <... setpgid resumed>) = 0 [pid 12325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12324] <... close resumed>) = 0 [pid 12320] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] close(3 [pid 12325] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12324] symlink("/dev/binderfs", "./binderfs" [pid 12320] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] unlink("./606/cgroup.cpu" [pid 5047] <... close resumed>) = 0 [pid 12326] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 12325] <... openat resumed>) = 4 [pid 12320] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... unlink resumed>) = 0 [pid 5047] rmdir("./600" [pid 12326] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 12324] <... symlink resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 5049] umount2("./606/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./615", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12325] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12324] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12320] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12326] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12325] <... futex resumed>) = ? [pid 12324] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./615", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] mkdir("./601", 0777 [pid 12326] <... symlink resumed>) = 0 [pid 12325] +++ killed by SIGIO +++ [pid 12324] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./606/binderfs", [pid 12326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5050] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12326] <... openat resumed>) = 3 [pid 12324] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] unlink("./606/binderfs" [pid 5047] <... mkdir resumed>) = 0 [pid 12326] write(3, "1000", 4 [pid 12324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12326] <... write resumed>) = 4 [pid 12326] close(3) = 0 [pid 12324] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] getdents64(3, [pid 5049] <... unlink resumed>) = 0 [pid 12324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12326] symlink("/dev/binderfs", "./binderfs" [pid 12324] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12320] +++ killed by SIGIO +++ [pid 5049] umount2("./606/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12324] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12326] <... symlink resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1233, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12326] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 12326] <... futex resumed>) = 0 [pid 12326] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... restart_syscall resumed>) = 0 [pid 12324] <... mprotect resumed>) = 0 [pid 5050] umount2("./615/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12326] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12324] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] newfstatat(AT_FDCWD, "./606/cgroup", [pid 12324] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] unlink("./606/cgroup" [pid 12326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12327 attached [pid 12324] <... clone3 resumed> => {parent_tid=[1178]}, 88) = 1178 [pid 5049] umount2("./606/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12327] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12324] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12327] <... rseq resumed>) = 0 [pid 12324] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./606/blkio.bfq.io_wait_time_recursive", [pid 12327] set_robust_list(0x7f504ff7f9a0, 24 [pid 12324] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12327] <... set_robust_list resumed>) = 0 [pid 12324] <... futex resumed>) = 0 [pid 5049] unlink("./606/blkio.bfq.io_wait_time_recursive" [pid 12327] rt_sigprocmask(SIG_SETMASK, [], [pid 12324] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12328 attached [pid 12327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./615", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./615/cgroup.cpu", [pid 12326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12328] set_robust_list(0x555556ac56a0, 24 [pid 12327] open(".", O_RDONLY [pid 5049] umount2("./606/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12328] <... set_robust_list resumed>) = 0 [pid 12328] chdir("./601" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12328] <... chdir resumed>) = 0 [pid 12327] <... open resumed>) = 3 [pid 5051] openat(AT_FDCWD, "./615", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] newfstatat(AT_FDCWD, "./606/cgroup.net", [pid 12328] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12328] <... prctl resumed>) = 0 [pid 12328] setpgid(0, 0 [pid 12327] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... openat resumed>) = 3 [pid 12328] <... setpgid resumed>) = 0 [pid 12327] <... futex resumed>) = 1 [pid 12324] <... futex resumed>) = 0 [pid 5050] unlink("./615/cgroup.cpu" [pid 5049] unlink("./606/cgroup.net" [pid 12326] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] newfstatat(3, "", [pid 12328] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12327] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12326] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12324] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12327] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12324] <... futex resumed>) = 0 [pid 12324] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12327] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12327] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12328] <... symlink resumed>) = 0 [pid 12327] <... futex resumed>) = 1 [pid 12324] <... futex resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 12326] <... mprotect resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... close resumed>) = 0 [pid 12324] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12328] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12327] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] umount2("./615/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1204 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] rmdir("./606" [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./615/binderfs", [pid 12327] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12326] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12324] <... futex resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 12327] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12324] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] unlink("./615/binderfs" [pid 12328] <... symlink resumed>) = 0 [pid 12326] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] mkdir("./607", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 12326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] umount2("./615/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12328] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./615/cgroup", [pid 5049] <... mkdir resumed>) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12328] <... symlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 12329 attached [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1216 ./strace-static-x86_64: Process 12330 attached [pid 5051] umount2("./615/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12330] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12329] set_robust_list(0x555556ac56a0, 24 [pid 12330] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12327] <... openat resumed>) = 4 [pid 12326] <... clone3 resumed> => {parent_tid=[1195]}, 88) = 1195 [pid 5051] newfstatat(AT_FDCWD, "./615/cgroup.cpu", [pid 12328] <... openat resumed>) = 3 [pid 5050] unlink("./615/cgroup" [pid 12327] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12330] rt_sigprocmask(SIG_SETMASK, [], [pid 12329] <... set_robust_list resumed>) = 0 [pid 12326] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12328] write(3, "1000", 4 [pid 12324] <... futex resumed>) = ? [pid 5051] unlink("./615/cgroup.cpu" [pid 12330] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12329] chdir("./607" [pid 5051] <... unlink resumed>) = 0 [pid 12330] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12329] <... chdir resumed>) = 0 [pid 12326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12329] setpgid(0, 0) = 0 [pid 12329] symlink("/syzcgroup/unified/syz3", "./cgroup") = 0 [pid 12329] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12328] <... write resumed>) = 4 [pid 12326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./615/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./615/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12328] close(3 [pid 12326] <... futex resumed>) = 1 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12328] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12328] symlink("/dev/binderfs", "./binderfs" [pid 12326] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./615/binderfs", [pid 5050] newfstatat(AT_FDCWD, "./615/blkio.bfq.io_wait_time_recursive", [pid 12327] +++ killed by SIGIO +++ [pid 12324] +++ killed by SIGIO +++ [pid 12330] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12330] open(".", O_RDONLY [pid 12329] <... symlink resumed>) = 0 [pid 5051] unlink("./615/binderfs" [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12329] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1177, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12330] <... open resumed>) = 3 [pid 12329] <... symlink resumed>) = 0 [pid 12328] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] unlink("./615/blkio.bfq.io_wait_time_recursive" [pid 5045] umount2("./587", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12330] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12328] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12326] <... futex resumed>) = 0 [pid 5051] umount2("./615/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12330] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] openat(AT_FDCWD, "./587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] umount2("./615/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12329] <... openat resumed>) = 3 [pid 12328] <... futex resumed>) = 0 [pid 12326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... openat resumed>) = 3 [pid 12328] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12330] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12326] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./615/cgroup", [pid 12330] <... fcntl resumed>) = 0 [pid 12329] write(3, "1000", 4 [pid 12328] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12326] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./615/cgroup.net", [pid 5045] newfstatat(3, "", [pid 12330] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12330] <... futex resumed>) = 0 [pid 12326] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./615/cgroup" [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12330] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12329] <... write resumed>) = 4 [pid 12328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12326] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12329] close(3 [pid 12328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] unlink("./615/cgroup.net" [pid 12330] <... openat resumed>) = 4 [pid 12329] <... close resumed>) = 0 [pid 12328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... unlink resumed>) = 0 [pid 5051] umount2("./615/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] getdents64(3, [pid 12330] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12329] symlink("/dev/binderfs", "./binderfs" [pid 12328] <... mmap resumed>) = 0x7f504ff5f000 [pid 12326] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12330] <... futex resumed>) = ? [pid 5051] newfstatat(AT_FDCWD, "./615/blkio.bfq.io_wait_time_recursive", [pid 12330] +++ killed by SIGIO +++ [pid 12329] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12329] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12328] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] unlink("./615/blkio.bfq.io_wait_time_recursive" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12329] <... futex resumed>) = 0 [pid 5050] getdents64(3, [pid 12328] <... mprotect resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12329] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5045] umount2("./587/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12329] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12328] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5050] close(3 [pid 5051] umount2("./615/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12328] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12329] <... mmap resumed>) = 0x7f504ff5f000 [pid 12328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] newfstatat(AT_FDCWD, "./587/cgroup.cpu", [pid 12329] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12329] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12328] <... clone3 resumed> => {parent_tid=[1205]}, 88) = 1205 [pid 5045] unlink("./587/cgroup.cpu") = 0 [pid 12329] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12328] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] newfstatat(AT_FDCWD, "./615/cgroup.net", [pid 5050] rmdir("./615" [pid 12328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./587/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12329] <... clone3 resumed> => {parent_tid=[1217]}, 88) = 1217 [pid 12328] <... futex resumed>) = 0 [pid 12328] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12329] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] newfstatat(AT_FDCWD, "./587/binderfs", [pid 12329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12329] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./615/cgroup.net" [pid 5050] mkdir("./616", 0777 [pid 12329] <... futex resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] unlink("./587/binderfs" [pid 12329] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12332 attached ./strace-static-x86_64: Process 12331 attached [pid 12326] +++ killed by SIGIO +++ [pid 5051] getdents64(3, [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 12332] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12331] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1194, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 12331] <... rseq resumed>) = 0 [pid 5051] close(3 [pid 12332] <... rseq resumed>) = 0 [pid 12331] set_robust_list(0x7f504ff7f9a0, 24 [pid 5045] umount2("./587/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12331] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 12333 attached [pid 12332] set_robust_list(0x7f504ff7f9a0, 24 [pid 12331] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] <... close resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1236 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12333] set_robust_list(0x555556ac56a0, 24 [pid 12332] <... set_robust_list resumed>) = 0 [pid 12331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] rmdir("./615" [pid 5045] newfstatat(AT_FDCWD, "./587/cgroup", [pid 12333] <... set_robust_list resumed>) = 0 [pid 12332] rt_sigprocmask(SIG_SETMASK, [], [pid 12331] open(".", O_RDONLY [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12333] chdir("./616" [pid 12332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12331] <... open resumed>) = 3 [pid 5046] umount2("./596", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12332] open(".", O_RDONLY [pid 12331] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./587/cgroup" [pid 12333] <... chdir resumed>) = 0 [pid 12332] <... open resumed>) = 3 [pid 12331] <... futex resumed>) = 1 [pid 12328] <... futex resumed>) = 0 [pid 5051] mkdir("./616", 0777 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... unlink resumed>) = 0 [pid 12333] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12332] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12331] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12332] <... futex resumed>) = 1 [pid 12331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12329] <... futex resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] umount2("./587/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12333] <... prctl resumed>) = 0 [pid 12332] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12331] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12329] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12333] setpgid(0, 0 [pid 12332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12329] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12333] <... setpgid resumed>) = 0 [pid 12332] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12329] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./587/blkio.bfq.io_wait_time_recursive", [pid 12332] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 12334 attached [pid 12333] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12331] <... fcntl resumed>) = 0 [pid 12328] <... futex resumed>) = 0 [pid 12332] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] openat(AT_FDCWD, "./596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12333] <... symlink resumed>) = 0 [pid 12334] set_robust_list(0x555556ac56a0, 24 [pid 12333] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12332] <... futex resumed>) = 1 [pid 12331] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12329] <... futex resumed>) = 0 [pid 12328] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1235 [pid 5046] <... openat resumed>) = 3 [pid 5045] unlink("./587/blkio.bfq.io_wait_time_recursive" [pid 12334] <... set_robust_list resumed>) = 0 [pid 12332] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12329] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 12332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12329] <... futex resumed>) = 0 [pid 12332] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12329] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12333] <... symlink resumed>) = 0 [pid 12332] <... openat resumed>) = 4 [pid 12331] <... futex resumed>) = 0 [pid 12328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5046] newfstatat(3, "", [pid 12334] chdir("./616" [pid 12328] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5045] umount2("./587/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12334] <... chdir resumed>) = 0 [pid 12333] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12331] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12328] <... futex resumed>) = 0 [pid 5046] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12334] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12332] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12329] <... futex resumed>) = -1 (errno 18446744073709551459) [pid 5045] newfstatat(AT_FDCWD, "./587/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./587/cgroup.net" [pid 12331] <... openat resumed>) = 4 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5045] <... unlink resumed>) = 0 [pid 12334] <... prctl resumed>) = 0 [pid 12333] <... symlink resumed>) = 0 [pid 12328] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] umount2("./596/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12334] setpgid(0, 0 [pid 12331] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] getdents64(3, [pid 12334] <... setpgid resumed>) = 0 [pid 12331] <... futex resumed>) = ? [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12334] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12331] +++ killed by SIGIO +++ [pid 12332] +++ killed by SIGIO +++ [pid 12329] +++ killed by SIGIO +++ [pid 5045] close(3 [pid 12334] <... symlink resumed>) = 0 [pid 12333] <... openat resumed>) = 3 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1216, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./596/cgroup.cpu", [pid 5045] <... close resumed>) = 0 [pid 12334] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12333] write(3, "1000", 4 [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 12334] <... symlink resumed>) = 0 [pid 12333] <... write resumed>) = 4 [pid 12328] +++ killed by SIGIO +++ [pid 5049] <... restart_syscall resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] rmdir("./587" [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1204, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 12334] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12333] close(3 [pid 5046] unlink("./596/cgroup.cpu" [pid 5047] <... restart_syscall resumed>) = 0 [pid 5045] <... rmdir resumed>) = 0 [pid 5045] mkdir("./588", 0777 [pid 12334] <... symlink resumed>) = 0 [pid 12333] <... close resumed>) = 0 [pid 5049] umount2("./607", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... mkdir resumed>) = 0 [pid 12333] symlink("/dev/binderfs", "./binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 12334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12333] <... symlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./601", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./596/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12334] <... openat resumed>) = 3 [pid 12333] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] openat(AT_FDCWD, "./607", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12334] write(3, "1000", 4 [pid 12333] <... futex resumed>) = 0 [pid 12333] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12334] <... write resumed>) = 4 [pid 12333] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12334] close(3 [pid 12333] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12334] <... close resumed>) = 0 [pid 12333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12334] symlink("/dev/binderfs", "./binderfs" [pid 12333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5047] openat(AT_FDCWD, "./601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./596/binderfs", [pid 5049] newfstatat(3, "", ./strace-static-x86_64: Process 12335 attached [pid 12333] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1179 [pid 5049] getdents64(3, [pid 5047] newfstatat(3, "", [pid 5046] unlink("./596/binderfs" [pid 12333] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12333] <... mprotect resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5049] umount2("./607/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./607/cgroup.cpu", [pid 12333] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12334] <... symlink resumed>) = 0 [pid 12333] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12336 attached => {parent_tid=[1237]}, 88) = 1237 [pid 12336] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12336] set_robust_list(0x7f504ff7f9a0, 24 [pid 12333] rt_sigprocmask(SIG_SETMASK, [], [pid 12336] <... set_robust_list resumed>) = 0 [pid 12333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12336] rt_sigprocmask(SIG_SETMASK, [], [pid 12335] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12336] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12335] <... set_robust_list resumed>) = 0 [pid 12334] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] getdents64(3, [pid 5046] umount2("./596/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12336] open(".", O_RDONLY [pid 12333] <... futex resumed>) = 0 [pid 12335] chdir("./588" [pid 12336] <... open resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12335] <... chdir resumed>) = 0 [pid 5047] umount2("./601/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./596/cgroup", [pid 12335] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12334] <... futex resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12336] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12334] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] newfstatat(AT_FDCWD, "./601/cgroup.cpu", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12336] <... futex resumed>) = 0 [pid 12335] <... prctl resumed>) = 0 [pid 12334] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] unlink("./607/cgroup.cpu" [pid 12336] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12335] setpgid(0, 0 [pid 12333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] unlink("./596/cgroup" [pid 12336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12333] <... futex resumed>) = 0 [pid 12336] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12336] <... fcntl resumed>) = 0 [pid 12336] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 12335] <... setpgid resumed>) = 0 [pid 12336] <... futex resumed>) = 1 [pid 12333] <... futex resumed>) = 0 [pid 12336] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12333] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12333] <... futex resumed>) = 0 [pid 12336] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12335] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12333] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./607/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] umount2("./596/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12336] <... openat resumed>) = 4 [pid 12333] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12336] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12335] <... symlink resumed>) = 0 [pid 12334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] newfstatat(AT_FDCWD, "./607/binderfs", [pid 5047] unlink("./601/cgroup.cpu" [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./596/blkio.bfq.io_wait_time_recursive", [pid 12335] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12334] <... mmap resumed>) = 0x7f504ff5f000 [pid 12334] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12335] <... symlink resumed>) = 0 [pid 12334] <... mprotect resumed>) = 0 [pid 5049] unlink("./607/binderfs" [pid 12334] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5047] umount2("./601/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./596/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 12335] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12334] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./607/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12335] <... symlink resumed>) = 0 [pid 12334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./601/binderfs", ./strace-static-x86_64: Process 12337 attached {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12337] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12334] <... clone3 resumed> => {parent_tid=[1236]}, 88) = 1236 [pid 5049] newfstatat(AT_FDCWD, "./607/cgroup", [pid 5047] unlink("./601/binderfs" [pid 12337] set_robust_list(0x7f504ff7f9a0, 24 [pid 12336] +++ killed by SIGIO +++ [pid 12335] <... openat resumed>) = 3 [pid 12334] rt_sigprocmask(SIG_SETMASK, [], [pid 12333] +++ killed by SIGIO +++ [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] umount2("./596/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12337] <... set_robust_list resumed>) = 0 [pid 12335] write(3, "1000", 4 [pid 12334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] unlink("./607/cgroup" [pid 5047] umount2("./601/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12337] rt_sigprocmask(SIG_SETMASK, [], [pid 12335] <... write resumed>) = 4 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1236, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12337] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12337] <... futex resumed>) = 0 [pid 12334] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12337] open(".", O_RDONLY [pid 5047] newfstatat(AT_FDCWD, "./601/cgroup", [pid 5049] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./596/cgroup.net", [pid 5050] umount2("./616", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12335] close(3 [pid 12337] <... open resumed>) = 3 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12337] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12335] <... close resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12337] <... futex resumed>) = 1 [pid 12334] <... futex resumed>) = 0 [pid 5050] openat(AT_FDCWD, "./616", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12337] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12335] symlink("/dev/binderfs", "./binderfs" [pid 12334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./607/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./601/cgroup" [pid 12337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12334] <... futex resumed>) = 0 [pid 12337] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12335] <... symlink resumed>) = 0 [pid 12334] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12337] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12337] <... futex resumed>) = 0 [pid 12334] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12337] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12335] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12334] <... futex resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5049] newfstatat(AT_FDCWD, "./607/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./596/cgroup.net" [pid 12337] <... openat resumed>) = 4 [pid 5050] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12337] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12334] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12337] <... futex resumed>) = ? [pid 12335] <... futex resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] unlink("./607/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./601/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12335] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12335] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12335] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] getdents64(3, [pid 5047] newfstatat(AT_FDCWD, "./601/blkio.bfq.io_wait_time_recursive", [pid 12335] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./607/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] getdents64(3, [pid 12337] +++ killed by SIGIO +++ [pid 12335] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12334] +++ killed by SIGIO +++ [pid 12335] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] umount2("./616/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./601/blkio.bfq.io_wait_time_recursive" [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12335] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./607/cgroup.net", [pid 5047] <... unlink resumed>) = 0 [pid 5046] close(3 [pid 12335] <... mprotect resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1235, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] newfstatat(AT_FDCWD, "./616/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./601/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... close resumed>) = 0 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./607/cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] rmdir("./596" [pid 12335] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... restart_syscall resumed>) = 0 [pid 5050] unlink("./616/cgroup.cpu" [pid 12335] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./601/cgroup.net", [pid 12335] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 12338 attached [pid 5051] umount2("./616", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./616/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5047] unlink("./601/cgroup.net" [pid 12338] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] newfstatat(AT_FDCWD, "./616/binderfs", [pid 12338] <... rseq resumed>) = 0 [pid 12335] <... clone3 resumed> => {parent_tid=[1180]}, 88) = 1180 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] close(3 [pid 5046] mkdir("./597", 0777 [pid 12338] set_robust_list(0x7f504ff7f9a0, 24 [pid 12335] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] openat(AT_FDCWD, "./616", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5050] unlink("./616/binderfs" [pid 5049] <... close resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12338] <... set_robust_list resumed>) = 0 [pid 12335] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12338] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] rmdir("./607" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... unlink resumed>) = 0 [pid 5047] getdents64(3, [pid 5051] <... openat resumed>) = 3 [pid 12338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12335] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12338] open(".", O_RDONLY [pid 12335] <... futex resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5050] umount2("./616/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12338] <... open resumed>) = 3 [pid 12335] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] mkdir("./608", 0777 [pid 5047] close(3 [pid 12338] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5050] newfstatat(AT_FDCWD, "./616/cgroup", [pid 5047] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12339 attached [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1196 [pid 5049] <... mkdir resumed>) = 0 [pid 5047] rmdir("./601" [pid 5050] unlink("./616/cgroup" [pid 12339] set_robust_list(0x555556ac56a0, 24) = 0 [pid 5051] umount2("./616/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12339] chdir("./597" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./616/cgroup.cpu", [pid 12338] <... futex resumed>) = 0 [pid 12339] <... chdir resumed>) = 0 [pid 12335] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12339] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12339] <... prctl resumed>) = 0 [pid 12335] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12339] setpgid(0, 0 [pid 12335] <... futex resumed>) = 0 [pid 12335] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12339] <... setpgid resumed>) = 0 [pid 12339] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12338] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] unlink("./616/cgroup.cpu" [pid 5050] umount2("./616/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... rmdir resumed>) = 0 [pid 12338] <... fcntl resumed>) = 0 [pid 12339] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12339] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 12339] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 12339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 12340 attached [pid 12338] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] newfstatat(AT_FDCWD, "./616/blkio.bfq.io_wait_time_recursive", [pid 12338] <... futex resumed>) = 1 [pid 5047] mkdir("./602", 0777 [pid 12340] set_robust_list(0x555556ac56a0, 24 [pid 12339] <... openat resumed>) = 3 [pid 12335] <... futex resumed>) = 0 [pid 5051] umount2("./616/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12340] <... set_robust_list resumed>) = 0 [pid 12340] chdir("./608" [pid 5047] <... mkdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./616/blkio.bfq.io_wait_time_recursive" [pid 12338] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12340] <... chdir resumed>) = 0 [pid 12339] write(3, "1000", 4 [pid 12335] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12340] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12339] <... write resumed>) = 4 [pid 12338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12335] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./616/binderfs", [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1218 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12340] <... prctl resumed>) = 0 [pid 12339] close(3 [pid 12338] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12335] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12339] <... close resumed>) = 0 [pid 5050] umount2("./616/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12339] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] unlink("./616/binderfs") = 0 [pid 5051] umount2("./616/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12340] setpgid(0, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] newfstatat(AT_FDCWD, "./616/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12338] <... openat resumed>) = 4 ./strace-static-x86_64: Process 12341 attached [pid 5051] unlink("./616/cgroup" [pid 12339] <... symlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./616/cgroup.net", [pid 12340] <... setpgid resumed>) = 0 [pid 12335] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12338] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12341] set_robust_list(0x555556ac56a0, 24 [pid 12339] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1206 [pid 12341] <... set_robust_list resumed>) = 0 [pid 12339] <... futex resumed>) = 0 [pid 5050] unlink("./616/cgroup.net" [pid 12339] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12338] +++ killed by SIGIO +++ [pid 12341] chdir("./602" [pid 5051] umount2("./616/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12341] <... chdir resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12341] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] newfstatat(AT_FDCWD, "./616/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12341] <... prctl resumed>) = 0 [pid 5051] unlink("./616/blkio.bfq.io_wait_time_recursive" [pid 12341] setpgid(0, 0) = 0 [pid 12339] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12341] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12340] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12341] <... symlink resumed>) = 0 [pid 12341] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12340] <... symlink resumed>) = 0 [pid 5050] getdents64(3, [pid 12340] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12339] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12340] <... symlink resumed>) = 0 [pid 12340] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12341] <... symlink resumed>) = 0 [pid 12339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12335] +++ killed by SIGIO +++ [pid 5051] umount2("./616/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] close(3 [pid 12341] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12339] <... mmap resumed>) = 0x7f504ff5f000 [pid 12340] <... symlink resumed>) = 0 [pid 12339] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... close resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1179, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12339] <... mprotect resumed>) = 0 [pid 5050] rmdir("./616" [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 12341] <... symlink resumed>) = 0 [pid 12340] <... openat resumed>) = 3 [pid 5051] newfstatat(AT_FDCWD, "./616/cgroup.net", [pid 5045] <... restart_syscall resumed>) = 0 [pid 12341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12340] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 12340] <... write resumed>) = 4 [pid 12339] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] mkdir("./617", 0777 [pid 12341] <... openat resumed>) = 3 [pid 5051] unlink("./616/cgroup.net" [pid 12340] close(3 [pid 12339] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5045] umount2("./588", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] getdents64(3, [pid 12341] write(3, "1000", 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12339] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] openat(AT_FDCWD, "./588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12340] <... close resumed>) = 0 ./strace-static-x86_64: Process 12342 attached [pid 12341] <... write resumed>) = 4 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12342] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12341] close(3 [pid 5051] close(3 [pid 5045] <... openat resumed>) = 3 [pid 12342] <... rseq resumed>) = 0 [pid 12341] <... close resumed>) = 0 [pid 12340] symlink("/dev/binderfs", "./binderfs" [pid 12339] <... clone3 resumed> => {parent_tid=[1197]}, 88) = 1197 [pid 5051] <... close resumed>) = 0 [pid 12342] set_robust_list(0x7f504ff7f9a0, 24 [pid 12341] symlink("/dev/binderfs", "./binderfs" [pid 12342] <... set_robust_list resumed>) = 0 [pid 12341] <... symlink resumed>) = 0 [pid 5051] rmdir("./616" [pid 5050] <... mkdir resumed>) = 0 [pid 12342] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] newfstatat(3, "", [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12340] <... symlink resumed>) = 0 [pid 12339] rt_sigprocmask(SIG_SETMASK, [], [pid 12341] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12340] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12341] <... futex resumed>) = 0 [pid 12339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] getdents64(3, [pid 12342] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12340] <... futex resumed>) = 0 [pid 12339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12341] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12340] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12339] <... futex resumed>) = 0 [pid 5051] mkdir("./617", 0777 [pid 5045] umount2("./588/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12342] open(".", O_RDONLY [pid 12341] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12342] <... open resumed>) = 3 [pid 12341] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12340] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12339] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./588/cgroup.cpu", ./strace-static-x86_64: Process 12343 attached {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12343] set_robust_list(0x555556ac56a0, 24 [pid 12341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] unlink("./588/cgroup.cpu" [pid 12343] <... set_robust_list resumed>) = 0 [pid 12342] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1238 [pid 12340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12344 attached [pid 12340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] umount2("./588/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12343] chdir("./617" [pid 12342] <... futex resumed>) = 1 [pid 12341] <... mmap resumed>) = 0x7f504ff5f000 [pid 12340] <... mmap resumed>) = 0x7f504ff5f000 [pid 12339] <... futex resumed>) = 0 [pid 12344] set_robust_list(0x555556ac56a0, 24 [pid 12343] <... chdir resumed>) = 0 [pid 12342] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12341] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12340] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1237 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12344] <... set_robust_list resumed>) = 0 [pid 12343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12341] <... mprotect resumed>) = 0 [pid 12339] <... futex resumed>) = 0 [pid 12344] chdir("./617" [pid 12343] <... prctl resumed>) = 0 [pid 12342] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12340] <... mprotect resumed>) = 0 [pid 12339] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] newfstatat(AT_FDCWD, "./588/binderfs", [pid 12342] <... fcntl resumed>) = 0 [pid 12343] setpgid(0, 0) = 0 [pid 12342] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12340] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12344] <... chdir resumed>) = 0 [pid 12342] <... futex resumed>) = 1 [pid 12341] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12340] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12339] <... futex resumed>) = 0 [pid 5045] unlink("./588/binderfs" [pid 12344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12343] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12342] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12341] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12339] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12344] <... prctl resumed>) = 0 [pid 12343] <... symlink resumed>) = 0 [pid 12342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12341] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... unlink resumed>) = 0 [pid 12344] setpgid(0, 0 [pid 5045] umount2("./588/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12345 attached [pid 12344] <... setpgid resumed>) = 0 [pid 12343] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12342] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12340] <... clone3 resumed> => {parent_tid=[1219]}, 88) = 1219 [pid 12339] <... futex resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12346 attached [pid 12345] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12344] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12343] <... symlink resumed>) = 0 [pid 12340] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] newfstatat(AT_FDCWD, "./588/cgroup", [pid 12346] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12345] <... rseq resumed>) = 0 [pid 12344] <... symlink resumed>) = 0 [pid 12343] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12342] <... openat resumed>) = 4 [pid 12341] <... clone3 resumed> => {parent_tid=[1207]}, 88) = 1207 [pid 12340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12339] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12346] <... rseq resumed>) = 0 [pid 12345] set_robust_list(0x7f504ff7f9a0, 24 [pid 12344] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12343] <... symlink resumed>) = 0 [pid 12341] rt_sigprocmask(SIG_SETMASK, [], [pid 12340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./588/cgroup" [pid 12346] set_robust_list(0x7f504ff7f9a0, 24 [pid 12345] <... set_robust_list resumed>) = 0 [pid 12344] <... symlink resumed>) = 0 [pid 12343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12342] +++ killed by SIGIO +++ [pid 12341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12340] <... futex resumed>) = 0 [pid 12346] <... set_robust_list resumed>) = 0 [pid 12345] rt_sigprocmask(SIG_SETMASK, [], [pid 12344] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12343] <... openat resumed>) = 3 [pid 12341] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12340] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... unlink resumed>) = 0 [pid 12346] rt_sigprocmask(SIG_SETMASK, [], [pid 12345] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12344] <... symlink resumed>) = 0 [pid 12343] write(3, "1000", 4 [pid 12341] <... futex resumed>) = 0 [pid 12346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12346] open(".", O_RDONLY [pid 12341] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12345] open(".", O_RDONLY [pid 12344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12343] <... write resumed>) = 4 [pid 12339] +++ killed by SIGIO +++ [pid 5045] umount2("./588/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12344] <... openat resumed>) = 3 [pid 12343] close(3) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1196, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./588/blkio.bfq.io_wait_time_recursive", [pid 12344] write(3, "1000", 4 [pid 12343] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12346] <... open resumed>) = 3 [pid 12345] <... open resumed>) = 3 [pid 12344] <... write resumed>) = 4 [pid 12345] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12344] close(3 [pid 5045] unlink("./588/blkio.bfq.io_wait_time_recursive" [pid 12345] <... futex resumed>) = 1 [pid 12344] <... close resumed>) = 0 [pid 12340] <... futex resumed>) = 0 [pid 12345] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12340] <... futex resumed>) = 0 [pid 12346] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12345] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12344] symlink("/dev/binderfs", "./binderfs" [pid 12343] <... symlink resumed>) = 0 [pid 12341] <... futex resumed>) = 0 [pid 12340] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... unlink resumed>) = 0 [pid 12346] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12345] <... fcntl resumed>) = 0 [pid 12344] <... symlink resumed>) = 0 [pid 12341] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12346] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12345] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12341] <... futex resumed>) = 0 [pid 12346] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12343] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12341] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12346] <... fcntl resumed>) = 0 [pid 12345] <... futex resumed>) = 1 [pid 12344] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12343] <... futex resumed>) = 0 [pid 5045] umount2("./588/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12344] <... futex resumed>) = 0 [pid 5046] umount2("./597", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12346] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12345] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12344] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12343] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12340] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] newfstatat(AT_FDCWD, "./588/cgroup.net", [pid 12346] <... futex resumed>) = 1 [pid 12344] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12343] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12341] <... futex resumed>) = 0 [pid 12340] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] openat(AT_FDCWD, "./597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] newfstatat(3, "", [pid 5045] unlink("./588/cgroup.net" [pid 12346] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12345] <... futex resumed>) = 0 [pid 12344] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12341] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12340] <... futex resumed>) = 1 [pid 5045] <... unlink resumed>) = 0 [pid 12345] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12344] <... mprotect resumed>) = 0 [pid 12343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12340] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12344] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12341] <... futex resumed>) = 0 [pid 12340] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12344] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12340] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] getdents64(3, [pid 12344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12343] <... mmap resumed>) = 0x7f504ff5f000 [pid 12341] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12343] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12347 attached [pid 12344] <... clone3 resumed> => {parent_tid=[1238]}, 88) = 1238 [pid 5045] close(3 [pid 12347] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12344] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] <... close resumed>) = 0 [pid 12347] <... rseq resumed>) = 0 [pid 12347] set_robust_list(0x7f504ff7f9a0, 24 [pid 12344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] rmdir("./588" [pid 12347] <... set_robust_list resumed>) = 0 [pid 12344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12347] rt_sigprocmask(SIG_SETMASK, [], [pid 12344] <... futex resumed>) = 0 [pid 12347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12344] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... rmdir resumed>) = 0 [pid 12347] open(".", O_RDONLY) = 3 [pid 12347] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12347] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12344] <... futex resumed>) = 0 [pid 12344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] mkdir("./589", 0777 [pid 12347] <... futex resumed>) = 0 [pid 12344] <... futex resumed>) = 1 [pid 5045] <... mkdir resumed>) = 0 [pid 12347] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12344] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12347] <... fcntl resumed>) = 0 [pid 12347] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12344] <... futex resumed>) = 0 [pid 12347] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12344] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12347] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12344] <... futex resumed>) = 0 [pid 12347] <... openat resumed>) = 4 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12347] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12345] <... openat resumed>) = ? [pid 12344] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12347] <... futex resumed>) = ? [pid 12347] +++ killed by SIGIO +++ [pid 12346] <... openat resumed>) = 4 [pid 12344] +++ killed by SIGIO +++ [pid 12343] <... mprotect resumed>) = 0 [pid 12341] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 ./strace-static-x86_64: Process 12348 attached [pid 12348] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1181 [pid 12348] <... set_robust_list resumed>) = 0 [pid 12345] +++ killed by SIGIO +++ [pid 12340] +++ killed by SIGIO +++ [pid 5046] getdents64(3, [pid 12348] chdir("./589" [pid 12343] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12348] <... chdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12348] setpgid(0, 0) = 0 [pid 12348] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5046] umount2("./597/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12343] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12341] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12349 attached [pid 5046] newfstatat(AT_FDCWD, "./597/cgroup.cpu", [pid 12343] <... clone3 resumed> => {parent_tid=[1239]}, 88) = 1239 [pid 12349] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12343] rt_sigprocmask(SIG_SETMASK, [], [pid 12346] +++ killed by SIGIO +++ [pid 12349] <... rseq resumed>) = 0 [pid 12348] <... symlink resumed>) = 0 [pid 12343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1237, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1218, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5046] unlink("./597/cgroup.cpu" [pid 12349] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12348] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12349] rt_sigprocmask(SIG_SETMASK, [], [pid 12348] <... symlink resumed>) = 0 [pid 12343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12349] open(".", O_RDONLY [pid 12348] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12343] <... futex resumed>) = 0 [pid 12341] +++ killed by SIGIO +++ [pid 5046] umount2("./597/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./608", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./597/binderfs", [pid 5049] openat(AT_FDCWD, "./608", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(3, "", [pid 5046] unlink("./597/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12349] <... open resumed>) = 3 [pid 5046] <... unlink resumed>) = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./608/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./597/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12348] <... symlink resumed>) = 0 [pid 12349] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] umount2("./617", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12349] <... futex resumed>) = 1 [pid 12348] <... openat resumed>) = 3 [pid 12343] <... futex resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./608/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./597/cgroup", [pid 12349] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] openat(AT_FDCWD, "./617", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./597/cgroup" [pid 12349] <... fcntl resumed>) = 0 [pid 12343] <... futex resumed>) = 0 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1206, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... unlink resumed>) = 0 [pid 12343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... openat resumed>) = 3 [pid 12349] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12348] write(3, "1000", 4 [pid 12343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(3, "", [pid 5049] unlink("./608/cgroup.cpu" [pid 5047] umount2("./602", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./597/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12349] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12348] <... write resumed>) = 4 [pid 12343] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12348] close(3 [pid 12343] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12349] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12348] <... close resumed>) = 0 [pid 12343] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] getdents64(3, [pid 5047] openat(AT_FDCWD, "./602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12348] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] umount2("./608/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... openat resumed>) = 3 [pid 5046] newfstatat(AT_FDCWD, "./597/blkio.bfq.io_wait_time_recursive", [pid 12349] <... openat resumed>) = 4 [pid 5051] umount2("./617/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(3, "", [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12349] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12343] <... futex resumed>) = ? [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./608/binderfs", [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] unlink("./597/blkio.bfq.io_wait_time_recursive" [pid 12349] +++ killed by SIGIO +++ [pid 12348] <... symlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./617/cgroup.cpu", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 12348] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./608/binderfs" [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12348] <... futex resumed>) = 0 [pid 5051] unlink("./617/cgroup.cpu" [pid 5047] umount2("./602/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./597/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12348] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12348] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] newfstatat(AT_FDCWD, "./602/cgroup.cpu", [pid 5046] newfstatat(AT_FDCWD, "./597/cgroup.net", [pid 5051] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./602/cgroup.cpu" [pid 5046] unlink("./597/cgroup.net" [pid 12348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12343] +++ killed by SIGIO +++ [pid 5051] umount2("./617/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./608/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1238, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] getdents64(3, [pid 5050] umount2("./617", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12348] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] openat(AT_FDCWD, "./617", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./602/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] newfstatat(AT_FDCWD, "./617/binderfs", [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12348] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] newfstatat(AT_FDCWD, "./608/cgroup", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(3, "", [pid 12348] <... mprotect resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] unlink("./608/cgroup" [pid 5047] newfstatat(AT_FDCWD, "./602/binderfs", [pid 5046] close(3 [pid 5050] getdents64(3, [pid 5051] unlink("./617/binderfs" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... close resumed>) = 0 [pid 5050] umount2("./617/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./617/cgroup.cpu", [pid 5049] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./617/cgroup.cpu" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 12348] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./617/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./617/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12348] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] unlink("./602/binderfs" [pid 5046] rmdir("./597" [pid 5049] umount2("./608/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./617/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./617/binderfs") = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 5050] umount2("./617/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./617/cgroup", [pid 5047] <... unlink resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./617/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./608/blkio.bfq.io_wait_time_recursive", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./617/cgroup" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./608/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./602/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./598", 0777 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12350 attached [pid 12348] <... clone3 resumed> => {parent_tid=[1182]}, 88) = 1182 [pid 5051] unlink("./617/cgroup" [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./602/cgroup", [pid 5046] <... mkdir resumed>) = 0 [pid 12350] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5051] <... unlink resumed>) = 0 [pid 12348] rt_sigprocmask(SIG_SETMASK, [], [pid 12350] <... rseq resumed>) = 0 [pid 12348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] umount2("./617/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12350] set_robust_list(0x7f504ff7f9a0, 24 [pid 12348] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12350] <... set_robust_list resumed>) = 0 [pid 12348] <... futex resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12350] rt_sigprocmask(SIG_SETMASK, [], [pid 12348] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./617/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./617/blkio.bfq.io_wait_time_recursive", [pid 5049] umount2("./608/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] unlink("./602/cgroup" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 12350] open(".", O_RDONLY [pid 5051] newfstatat(AT_FDCWD, "./617/blkio.bfq.io_wait_time_recursive", [pid 5050] unlink("./617/blkio.bfq.io_wait_time_recursive" [pid 5049] newfstatat(AT_FDCWD, "./608/cgroup.net", ./strace-static-x86_64: Process 12351 attached [pid 12350] <... open resumed>) = 3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./602/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12350] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12350] <... futex resumed>) = 1 [pid 12348] <... futex resumed>) = 0 [pid 5051] unlink("./617/blkio.bfq.io_wait_time_recursive" [pid 5050] umount2("./617/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./608/cgroup.net" [pid 5047] newfstatat(AT_FDCWD, "./602/blkio.bfq.io_wait_time_recursive", [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1198 [pid 12350] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12348] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12350] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12348] <... futex resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./617/cgroup.net", [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12350] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12348] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./602/blkio.bfq.io_wait_time_recursive" [pid 12350] <... fcntl resumed>) = 0 [pid 12350] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12348] <... futex resumed>) = 0 [pid 5050] unlink("./617/cgroup.net" [pid 12350] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... unlink resumed>) = 0 [pid 12350] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12348] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12350] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5049] <... unlink resumed>) = 0 [pid 12351] set_robust_list(0x555556ac56a0, 24 [pid 12348] <... futex resumed>) = 0 [pid 5051] umount2("./617/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./602/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 12350] <... openat resumed>) = 4 [pid 12348] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] getdents64(3, [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12350] ???( [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] close(3 [pid 5050] close(3 [pid 12350] <... ??? resumed>) = ? [pid 12351] <... set_robust_list resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... close resumed>) = 0 [pid 5049] <... close resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12351] chdir("./598" [pid 5051] newfstatat(AT_FDCWD, "./617/cgroup.net", [pid 12351] <... chdir resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./608" [pid 5047] newfstatat(AT_FDCWD, "./602/cgroup.net", [pid 12351] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5050] rmdir("./617" [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12351] <... prctl resumed>) = 0 [pid 5051] unlink("./617/cgroup.net") = 0 [pid 12351] setpgid(0, 0 [pid 5050] <... rmdir resumed>) = 0 [pid 12351] <... setpgid resumed>) = 0 [pid 5047] unlink("./602/cgroup.net" [pid 12351] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5047] <... unlink resumed>) = 0 [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] mkdir("./609", 0777 [pid 5050] mkdir("./618", 0777 [pid 5049] <... mkdir resumed>) = 0 [pid 12351] <... symlink resumed>) = 0 [pid 5051] close(3 [pid 5047] getdents64(3, [pid 5051] <... close resumed>) = 0 [pid 5050] <... mkdir resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 5051] rmdir("./617" [pid 5047] <... close resumed>) = 0 [pid 12351] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] <... rmdir resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] rmdir("./602" [pid 12351] <... symlink resumed>) = 0 [pid 12350] +++ killed by SIGIO +++ [pid 12348] +++ killed by SIGIO +++ [pid 5047] <... rmdir resumed>) = 0 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1181, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12351] symlink("/syzcgroup/net/syz0", "./cgroup.net"./strace-static-x86_64: Process 12352 attached ) = 0 [pid 5051] mkdir("./618", 0777) = 0 [pid 12351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5047] mkdir("./603", 0777 [pid 12352] set_robust_list(0x555556ac56a0, 24 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12351] write(3, "1000", 4./strace-static-x86_64: Process 12353 attached [pid 12352] <... set_robust_list resumed>) = 0 [pid 12351] <... write resumed>) = 4 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1240 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1220 [pid 5047] <... mkdir resumed>) = 0 [pid 5045] umount2("./589", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12351] close(3) = 0 [pid 12351] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12351] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12351] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12351] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12354 attached [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12354] set_robust_list(0x555556ac56a0, 24 [pid 5045] openat(AT_FDCWD, "./589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12354] <... set_robust_list resumed>) = 0 [pid 12353] set_robust_list(0x555556ac56a0, 24 [pid 12352] chdir("./609" [pid 12351] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1239 [pid 5045] <... openat resumed>) = 3 ./strace-static-x86_64: Process 12355 attached [pid 12354] chdir("./618" [pid 12353] <... set_robust_list resumed>) = 0 [pid 12352] <... chdir resumed>) = 0 [pid 12351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] newfstatat(3, "", [pid 12355] set_robust_list(0x555556ac56a0, 24 [pid 12354] <... chdir resumed>) = 0 [pid 12353] chdir("./618" [pid 12352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1208 [pid 12355] <... set_robust_list resumed>) = 0 [pid 12354] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12353] <... chdir resumed>) = 0 [pid 12352] <... prctl resumed>) = 0 [pid 12351] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12355] chdir("./603" [pid 12354] <... prctl resumed>) = 0 [pid 12353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12352] setpgid(0, 0 [pid 12351] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12355] <... chdir resumed>) = 0 [pid 12354] setpgid(0, 0 [pid 12352] <... setpgid resumed>) = 0 [pid 12351] <... mprotect resumed>) = 0 [pid 5045] getdents64(3, [pid 12355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12354] <... setpgid resumed>) = 0 [pid 12353] <... prctl resumed>) = 0 [pid 12351] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12355] <... prctl resumed>) = 0 [pid 12355] setpgid(0, 0 [pid 12354] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12355] <... setpgid resumed>) = 0 [pid 12351] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12351] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12356 attached [pid 12355] symlink("/syzcgroup/unified/syz2", "./cgroup") = 0 [pid 12353] setpgid(0, 0 [pid 12352] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12353] <... setpgid resumed>) = 0 [pid 12356] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12351] <... clone3 resumed> => {parent_tid=[1199]}, 88) = 1199 [pid 12356] <... rseq resumed>) = 0 [pid 12355] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12351] rt_sigprocmask(SIG_SETMASK, [], [pid 12356] set_robust_list(0x7f504ff7f9a0, 24 [pid 12355] <... symlink resumed>) = 0 [pid 12353] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12352] <... symlink resumed>) = 0 [pid 12351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] umount2("./589/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12356] <... set_robust_list resumed>) = 0 [pid 12354] <... symlink resumed>) = 0 [pid 12353] <... symlink resumed>) = 0 [pid 12352] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12356] rt_sigprocmask(SIG_SETMASK, [], [pid 12355] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12354] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12351] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./589/cgroup.cpu", [pid 12356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12355] <... symlink resumed>) = 0 [pid 12354] <... symlink resumed>) = 0 [pid 12353] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12352] <... symlink resumed>) = 0 [pid 12351] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12356] open(".", O_RDONLY [pid 12354] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12356] <... open resumed>) = 3 [pid 12355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12354] <... symlink resumed>) = 0 [pid 12353] <... symlink resumed>) = 0 [pid 12352] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 5045] unlink("./589/cgroup.cpu" [pid 12356] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12355] <... openat resumed>) = 3 [pid 12354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12356] <... futex resumed>) = 1 [pid 12355] write(3, "1000", 4 [pid 12354] <... openat resumed>) = 3 [pid 12351] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12356] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12353] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5045] umount2("./589/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12355] <... write resumed>) = 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12355] close(3) = 0 [pid 12356] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12355] symlink("/dev/binderfs", "./binderfs" [pid 12353] <... symlink resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./589/binderfs", [pid 12356] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12351] <... futex resumed>) = 0 [pid 12355] <... symlink resumed>) = 0 [pid 12352] <... symlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] unlink("./589/binderfs" [pid 12356] <... fcntl resumed>) = 0 [pid 12355] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12351] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12352] <... openat resumed>) = 3 [pid 12356] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12351] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12356] <... futex resumed>) = 0 [pid 12351] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12356] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12351] <... futex resumed>) = 0 [pid 12356] <... openat resumed>) = 4 [pid 12355] <... futex resumed>) = 0 [pid 12354] write(3, "1000", 4 [pid 12353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12352] write(3, "1000", 4 [pid 12351] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] <... unlink resumed>) = 0 [pid 12355] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12354] <... write resumed>) = 4 [pid 12356] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12356] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12353] <... openat resumed>) = 3 [pid 12355] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12354] close(3 [pid 12353] write(3, "1000", 4 [pid 5045] umount2("./589/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12356] <... futex resumed>) = ? [pid 12355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12354] <... close resumed>) = 0 [pid 12352] <... write resumed>) = 4 [pid 12355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12354] symlink("/dev/binderfs", "./binderfs" [pid 12353] <... write resumed>) = 4 [pid 12352] close(3 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12353] close(3 [pid 12352] <... close resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./589/cgroup", [pid 12355] <... mmap resumed>) = 0x7f504ff5f000 [pid 12353] <... close resumed>) = 0 [pid 12352] symlink("/dev/binderfs", "./binderfs" [pid 12353] symlink("/dev/binderfs", "./binderfs" [pid 12352] <... symlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12355] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12354] <... symlink resumed>) = 0 [pid 5045] unlink("./589/cgroup" [pid 12355] <... mprotect resumed>) = 0 [pid 12354] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... unlink resumed>) = 0 [pid 12354] <... futex resumed>) = 0 [pid 12354] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12354] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12354] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12356] +++ killed by SIGIO +++ [pid 12355] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12354] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12353] <... symlink resumed>) = 0 [pid 12352] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12351] +++ killed by SIGIO +++ [pid 5045] umount2("./589/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12355] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12353] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12352] <... futex resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1198, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12353] <... futex resumed>) = 0 [pid 12352] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] newfstatat(AT_FDCWD, "./589/blkio.bfq.io_wait_time_recursive", [pid 12353] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12352] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 12358 attached ./strace-static-x86_64: Process 12357 attached [pid 12354] <... clone3 resumed> => {parent_tid=[1240]}, 88) = 1240 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12353] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] unlink("./589/blkio.bfq.io_wait_time_recursive" [pid 12357] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12354] rt_sigprocmask(SIG_SETMASK, [], [pid 12353] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12357] <... rseq resumed>) = 0 [pid 12353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12358] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12357] set_robust_list(0x7f504ff7f9a0, 24 [pid 12354] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12357] <... set_robust_list resumed>) = 0 [pid 12354] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12357] rt_sigprocmask(SIG_SETMASK, [], [pid 12355] <... clone3 resumed> => {parent_tid=[1209]}, 88) = 1209 [pid 5046] umount2("./598", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12358] <... rseq resumed>) = 0 [pid 12358] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12358] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] umount2("./589/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12353] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12355] rt_sigprocmask(SIG_SETMASK, [], [pid 12354] <... futex resumed>) = 0 [pid 12353] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12352] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] openat(AT_FDCWD, "./598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12357] open(".", O_RDONLY [pid 12355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12353] <... mprotect resumed>) = 0 [pid 12355] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./589/cgroup.net", [pid 12358] <... futex resumed>) = 0 [pid 12355] <... futex resumed>) = 1 [pid 12353] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12352] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12358] open(".", O_RDONLY [pid 12357] <... open resumed>) = 3 [pid 12355] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12354] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12353] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12352] <... mprotect resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12357] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12358] <... open resumed>) = 3 [pid 12353] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] unlink("./589/cgroup.net" [pid 12357] <... futex resumed>) = 0 [pid 12354] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12352] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] getdents64(3, [pid 5045] <... unlink resumed>) = 0 [pid 12357] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12354] <... futex resumed>) = 0 [pid 12352] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12358] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12357] <... fcntl resumed>) = 0 [pid 12354] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12358] <... futex resumed>) = 1 [pid 12355] <... futex resumed>) = 0 [pid 5045] getdents64(3, ./strace-static-x86_64: Process 12360 attached ./strace-static-x86_64: Process 12359 attached [pid 12358] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12357] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12355] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12353] <... clone3 resumed> => {parent_tid=[1241]}, 88) = 1241 [pid 5046] umount2("./598/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12360] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12359] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12357] <... futex resumed>) = 0 [pid 12355] <... futex resumed>) = 0 [pid 12354] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12353] rt_sigprocmask(SIG_SETMASK, [], [pid 12352] <... clone3 resumed> => {parent_tid=[1221]}, 88) = 1221 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] close(3 [pid 12360] <... rseq resumed>) = 0 [pid 12359] <... rseq resumed>) = 0 [pid 12358] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12357] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12355] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12354] <... futex resumed>) = 0 [pid 12353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12352] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] newfstatat(AT_FDCWD, "./598/cgroup.cpu", [pid 12360] set_robust_list(0x7f504ff7f9a0, 24 [pid 12359] set_robust_list(0x7f504ff7f9a0, 24 [pid 12358] <... fcntl resumed>) = 0 [pid 12357] <... openat resumed>) = 4 [pid 12354] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... close resumed>) = 0 [pid 12360] <... set_robust_list resumed>) = 0 [pid 12359] <... set_robust_list resumed>) = 0 [pid 12358] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12353] <... futex resumed>) = 0 [pid 12352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] rmdir("./589" [pid 12358] <... futex resumed>) = 1 [pid 12355] <... futex resumed>) = 0 [pid 12360] rt_sigprocmask(SIG_SETMASK, [], [pid 12359] rt_sigprocmask(SIG_SETMASK, [], [pid 12358] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12357] +++ killed by SIGIO +++ [pid 12355] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12352] <... futex resumed>) = 0 [pid 5046] unlink("./598/cgroup.cpu" [pid 5045] <... rmdir resumed>) = 0 [pid 12360] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12355] <... futex resumed>) = 0 [pid 12352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12358] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12355] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12360] open(".", O_RDONLY) = 3 [pid 12359] open(".", O_RDONLY [pid 12358] <... openat resumed>) = 4 [pid 5046] <... unlink resumed>) = 0 [pid 12360] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] umount2("./598/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12360] <... futex resumed>) = 1 [pid 12352] <... futex resumed>) = 0 [pid 12360] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12352] <... futex resumed>) = 0 [pid 12359] <... open resumed>) = 3 [pid 5045] mkdir("./590", 0777 [pid 12360] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12359] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12358] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12355] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12354] +++ killed by SIGIO +++ [pid 12352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] newfstatat(AT_FDCWD, "./598/binderfs", [pid 12360] <... fcntl resumed>) = 0 [pid 12359] <... futex resumed>) = 1 [pid 12353] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12360] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12360] <... futex resumed>) = 1 [pid 12359] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12353] <... futex resumed>) = 0 [pid 12352] <... futex resumed>) = 0 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1239, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12360] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12359] <... fcntl resumed>) = 0 [pid 12353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12352] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 5046] unlink("./598/binderfs" [pid 12360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12359] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12352] <... futex resumed>) = 0 [pid 12360] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12352] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... unlink resumed>) = 0 [pid 12360] <... openat resumed>) = 4 [pid 12359] <... futex resumed>) = 1 [pid 12353] <... futex resumed>) = 0 [pid 5051] <... restart_syscall resumed>) = 0 [pid 12353] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12361 attached ) = 0 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1183 [pid 12353] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12361] set_robust_list(0x555556ac56a0, 24 [pid 5046] umount2("./598/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12361] <... set_robust_list resumed>) = 0 [pid 12360] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12359] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12358] +++ killed by SIGIO +++ [pid 12355] +++ killed by SIGIO +++ [pid 12352] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] umount2("./618", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12361] chdir("./590" [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12360] +++ killed by SIGIO +++ [pid 5046] newfstatat(AT_FDCWD, "./598/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./598/cgroup") = 0 [pid 5046] umount2("./598/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./598/blkio.bfq.io_wait_time_recursive", [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1208, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12359] <... openat resumed>) = 4 [pid 5051] openat(AT_FDCWD, "./618", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12361] <... chdir resumed>) = 0 [pid 12359] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12361] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12353] <... futex resumed>) = ? [pid 12352] +++ killed by SIGIO +++ [pid 5051] <... openat resumed>) = 3 [pid 12361] <... prctl resumed>) = 0 [pid 12359] +++ killed by SIGIO +++ [pid 5046] unlink("./598/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./603", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5047] openat(AT_FDCWD, "./603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./603/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12361] setpgid(0, 0 [pid 12353] +++ killed by SIGIO +++ [pid 5051] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./603/cgroup.cpu", [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12361] <... setpgid resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12361] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 5051] getdents64(3, [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1220, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5047] unlink("./603/cgroup.cpu" [pid 5046] umount2("./598/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1240, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./609", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12361] <... symlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./598/cgroup.net", [pid 12361] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5051] umount2("./618/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./609", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12361] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5047] umount2("./603/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] unlink("./598/cgroup.net" [pid 5051] newfstatat(AT_FDCWD, "./618/cgroup.cpu", [pid 5049] newfstatat(3, "", [pid 5046] <... unlink resumed>) = 0 [pid 12361] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] getdents64(3, [pid 12361] <... symlink resumed>) = 0 [pid 5051] unlink("./618/cgroup.cpu" [pid 5050] umount2("./618", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] close(3 [pid 12361] <... openat resumed>) = 3 [pid 5051] umount2("./618/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] openat(AT_FDCWD, "./618", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] newfstatat(AT_FDCWD, "./603/binderfs", [pid 5046] <... close resumed>) = 0 [pid 12361] write(3, "1000", 4 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... openat resumed>) = 3 [pid 5049] umount2("./609/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./598" [pid 5050] newfstatat(3, "", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... rmdir resumed>) = 0 [pid 12361] <... write resumed>) = 4 [pid 5051] newfstatat(AT_FDCWD, "./618/binderfs", [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] newfstatat(AT_FDCWD, "./609/cgroup.cpu", [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] mkdir("./599", 0777 [pid 12361] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] getdents64(3, [pid 12361] <... close resumed>) = 0 [pid 5051] unlink("./618/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./603/binderfs" [pid 12361] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] unlink("./609/cgroup.cpu" [pid 5046] <... mkdir resumed>) = 0 [pid 12361] <... symlink resumed>) = 0 [pid 5051] umount2("./618/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./618/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... unlink resumed>) = 0 [pid 12361] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 12361] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] newfstatat(AT_FDCWD, "./618/cgroup", [pid 12361] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12361] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./609/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./603/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12361] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5050] newfstatat(AT_FDCWD, "./618/cgroup.cpu", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] unlink("./618/cgroup" [pid 12361] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./609/binderfs", [pid 5047] newfstatat(AT_FDCWD, "./603/cgroup", [pid 12361] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] umount2("./618/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12361] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] newfstatat(AT_FDCWD, "./618/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12362 attached [pid 12361] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./618/cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12362] set_robust_list(0x555556ac56a0, 24 [pid 12361] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] unlink("./618/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 12363 attached [pid 12362] <... set_robust_list resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./609/binderfs" [pid 5047] unlink("./603/cgroup" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1200 [pid 12362] chdir("./599" [pid 12361] <... clone3 resumed> => {parent_tid=[1184]}, 88) = 1184 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./618/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 12361] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./609/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12362] <... chdir resumed>) = 0 [pid 12361] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] umount2("./618/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./618/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 12362] <... prctl resumed>) = 0 [pid 12361] <... futex resumed>) = 0 [pid 12362] setpgid(0, 0 [pid 12361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] newfstatat(AT_FDCWD, "./618/cgroup.net", [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] newfstatat(AT_FDCWD, "./609/cgroup", [pid 12363] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12362] <... setpgid resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./618/binderfs" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./603/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12363] <... rseq resumed>) = 0 [pid 12362] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] unlink("./618/cgroup.net" [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./609/cgroup" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12363] set_robust_list(0x7f504ff7f9a0, 24 [pid 5049] <... unlink resumed>) = 0 [pid 5047] newfstatat(AT_FDCWD, "./603/blkio.bfq.io_wait_time_recursive", [pid 12363] <... set_robust_list resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./618/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./609/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12363] rt_sigprocmask(SIG_SETMASK, [], [pid 12362] <... symlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./603/blkio.bfq.io_wait_time_recursive" [pid 12363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12362] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] getdents64(3, [pid 5050] newfstatat(AT_FDCWD, "./618/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./609/blkio.bfq.io_wait_time_recursive", [pid 5047] <... unlink resumed>) = 0 [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12363] open(".", O_RDONLY [pid 5051] <... close resumed>) = 0 [pid 5049] unlink("./609/blkio.bfq.io_wait_time_recursive" [pid 5047] umount2("./603/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./603/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12362] <... symlink resumed>) = 0 [pid 5051] rmdir("./618" [pid 5049] umount2("./609/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12363] <... open resumed>) = 3 [pid 5051] <... rmdir resumed>) = 0 [pid 5050] unlink("./618/cgroup" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12362] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] unlink("./603/cgroup.net" [pid 12363] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12362] <... symlink resumed>) = 0 [pid 5051] mkdir("./619", 0777 [pid 5050] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./609/cgroup.net", [pid 12362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12363] <... futex resumed>) = 1 [pid 12362] <... openat resumed>) = 3 [pid 12361] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] umount2("./618/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./618/blkio.bfq.io_wait_time_recursive", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12362] write(3, "1000", 4) = 4 [pid 5050] unlink("./618/blkio.bfq.io_wait_time_recursive" [pid 12363] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12362] close(3 [pid 12361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] unlink("./609/cgroup.net" [pid 5047] <... unlink resumed>) = 0 [pid 12363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12362] <... close resumed>) = 0 [pid 12361] <... futex resumed>) = 0 [pid 12362] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] umount2("./618/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5050] newfstatat(AT_FDCWD, "./618/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12362] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5050] unlink("./618/cgroup.net" [pid 12362] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12363] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] getdents64(3, [pid 12362] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12363] <... fcntl resumed>) = 0 [pid 12362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] getdents64(3, [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12363] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12362] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] close(3 [pid 12362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12362] <... mmap resumed>) = 0x7f504ff5f000 [pid 5050] close(3 [pid 12362] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] <... close resumed>) = 0 [pid 12362] <... mprotect resumed>) = 0 [pid 5047] <... close resumed>) = 0 [pid 12363] <... futex resumed>) = 1 [pid 12361] <... futex resumed>) = 0 [pid 5050] rmdir("./618" [pid 12362] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 12362] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12364 attached => {parent_tid=[1201]}, 88) = 1201 [pid 12363] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12361] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] rmdir("./603" [pid 12363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12361] <... futex resumed>) = 0 [pid 5049] getdents64(3, [pid 12364] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12362] rt_sigprocmask(SIG_SETMASK, [], [pid 5050] mkdir("./619", 0777 [pid 12364] <... rseq resumed>) = 0 [pid 12363] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12362] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12361] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] <... mkdir resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 12365 attached [pid 12364] set_robust_list(0x7f504ff7f9a0, 24 [pid 12362] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12364] <... set_robust_list resumed>) = 0 [pid 12362] <... futex resumed>) = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 12364] rt_sigprocmask(SIG_SETMASK, [], [pid 12362] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12364] open(".", O_RDONLY [pid 12365] set_robust_list(0x555556ac56a0, 24 [pid 12363] <... openat resumed>) = 4 [pid 12361] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] close(3 [pid 5047] mkdir("./604", 0777 [pid 12363] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12365] <... set_robust_list resumed>) = 0 [pid 12364] <... open resumed>) = 3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12365] chdir("./619") = 0 [pid 12364] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1241 [pid 5049] <... close resumed>) = 0 [pid 5047] <... mkdir resumed>) = 0 [pid 5049] rmdir("./609"./strace-static-x86_64: Process 12366 attached [pid 12365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12364] <... futex resumed>) = 1 [pid 12363] +++ killed by SIGIO +++ [pid 12362] <... futex resumed>) = 0 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12366] set_robust_list(0x555556ac56a0, 24 [pid 12365] <... prctl resumed>) = 0 [pid 12364] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12362] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12361] +++ killed by SIGIO +++ [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1242 [pid 5049] mkdir("./610", 0777 [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1183, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12365] setpgid(0, 0 [pid 5045] umount2("./590", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12367 attached [pid 12367] set_robust_list(0x555556ac56a0, 24 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] openat(AT_FDCWD, "./590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12367] <... set_robust_list resumed>) = 0 [pid 12366] <... set_robust_list resumed>) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 12367] chdir("./604" [pid 12365] <... setpgid resumed>) = 0 [pid 12364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12362] <... futex resumed>) = 0 [pid 5045] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12367] <... chdir resumed>) = 0 [pid 5045] getdents64(3, [pid 12367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12366] chdir("./619" [pid 12364] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12362] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12367] setpgid(0, 0 [pid 12365] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1210 [pid 12364] <... fcntl resumed>) = 0 [pid 12367] <... setpgid resumed>) = 0 [pid 5045] umount2("./590/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12367] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12365] <... symlink resumed>) = 0 [pid 12364] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12364] <... futex resumed>) = 1 [pid 12362] <... futex resumed>) = 0 [pid 12365] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 12364] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12362] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] <... chdir resumed>) = 0 [pid 12367] <... symlink resumed>) = 0 [pid 12366] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12365] <... symlink resumed>) = 0 [pid 12364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12362] <... futex resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./590/cgroup.cpu", ./strace-static-x86_64: Process 12368 attached [pid 12367] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12366] <... prctl resumed>) = 0 [pid 12365] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12364] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12362] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./590/cgroup.cpu") = 0 [pid 12367] <... symlink resumed>) = 0 [pid 12364] <... openat resumed>) = 4 [pid 12368] set_robust_list(0x555556ac56a0, 24 [pid 5045] umount2("./590/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12365] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12368] <... set_robust_list resumed>) = 0 [pid 5045] newfstatat(AT_FDCWD, "./590/binderfs", [pid 12368] chdir("./610" [pid 12366] setpgid(0, 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12367] symlink("/syzcgroup/net/syz2", "./cgroup.net") = 0 [pid 12366] <... setpgid resumed>) = 0 [pid 12365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12364] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12362] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1222 [pid 5045] unlink("./590/binderfs" [pid 12366] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 5045] <... unlink resumed>) = 0 [pid 12368] <... chdir resumed>) = 0 [pid 12368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12368] setpgid(0, 0 [pid 5045] umount2("./590/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12368] <... setpgid resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12368] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12365] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./590/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./590/cgroup" [pid 12366] <... symlink resumed>) = 0 [pid 12366] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12365] write(3, "1000", 4 [pid 5045] <... unlink resumed>) = 0 [pid 12365] <... write resumed>) = 4 [pid 12368] <... symlink resumed>) = 0 [pid 12365] close(3) = 0 [pid 5045] umount2("./590/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12367] write(3, "1000", 4) = 4 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12367] close(3 [pid 5045] newfstatat(AT_FDCWD, "./590/blkio.bfq.io_wait_time_recursive", [pid 12367] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12365] symlink("/dev/binderfs", "./binderfs" [pid 12366] <... symlink resumed>) = 0 [pid 12367] symlink("/dev/binderfs", "./binderfs" [pid 12366] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12367] <... symlink resumed>) = 0 [pid 12366] <... symlink resumed>) = 0 [pid 12368] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu") = 0 [pid 5045] unlink("./590/blkio.bfq.io_wait_time_recursive" [pid 12365] <... symlink resumed>) = 0 [pid 12367] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] <... unlink resumed>) = 0 [pid 12367] <... futex resumed>) = 0 [pid 12368] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12367] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12368] <... symlink resumed>) = 0 [pid 12367] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12366] <... openat resumed>) = 3 [pid 12365] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] umount2("./590/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12367] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12366] write(3, "1000", 4 [pid 12365] <... futex resumed>) = 0 [pid 12364] +++ killed by SIGIO +++ [pid 12362] +++ killed by SIGIO +++ [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12367] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12366] <... write resumed>) = 4 [pid 12365] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12366] close(3 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1200, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12365] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12366] <... close resumed>) = 0 [pid 12365] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5046] umount2("./599", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12366] symlink("/dev/binderfs", "./binderfs" [pid 12365] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12366] <... symlink resumed>) = 0 [pid 12365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] openat(AT_FDCWD, "./599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5045] newfstatat(AT_FDCWD, "./590/cgroup.net", [pid 12367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12365] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12367] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] unlink("./590/cgroup.net" [pid 12365] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12367] <... mprotect resumed>) = 0 [pid 12365] <... mprotect resumed>) = 0 [pid 5046] newfstatat(3, "", [pid 5045] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12367] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12368] <... openat resumed>) = 3 [pid 12367] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12366] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12365] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5045] getdents64(3, [pid 12368] write(3, "1000", 4 [pid 12367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12366] <... futex resumed>) = 0 [pid 12365] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] getdents64(3, [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5045] close(3) = 0 [pid 5045] rmdir("./590"./strace-static-x86_64: Process 12369 attached [pid 12368] <... write resumed>) = 4 [pid 12366] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12369] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12369] <... rseq resumed>) = 0 ./strace-static-x86_64: Process 12370 attached [pid 12369] set_robust_list(0x7f504ff7f9a0, 24 [pid 12368] close(3 [pid 12367] <... clone3 resumed> => {parent_tid=[1211]}, 88) = 1211 [pid 12366] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5046] umount2("./599/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... rmdir resumed>) = 0 [pid 12370] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12369] <... set_robust_list resumed>) = 0 [pid 12368] <... close resumed>) = 0 [pid 12367] rt_sigprocmask(SIG_SETMASK, [], [pid 12366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12365] <... clone3 resumed> => {parent_tid=[1242]}, 88) = 1242 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12369] rt_sigprocmask(SIG_SETMASK, [], [pid 12368] symlink("/dev/binderfs", "./binderfs" [pid 12367] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12366] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12365] rt_sigprocmask(SIG_SETMASK, [], [pid 12370] <... rseq resumed>) = 0 [pid 12369] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12365] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./599/cgroup.cpu", [pid 5045] mkdir("./591", 0777 [pid 12370] set_robust_list(0x7f504ff7f9a0, 24 [pid 12369] open(".", O_RDONLY [pid 12368] <... symlink resumed>) = 0 [pid 12367] <... futex resumed>) = 0 [pid 12365] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12370] <... set_robust_list resumed>) = 0 [pid 12369] <... open resumed>) = 3 [pid 12368] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12367] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12366] <... mmap resumed>) = 0x7f504ff5f000 [pid 12365] <... futex resumed>) = 0 [pid 5046] unlink("./599/cgroup.cpu" [pid 12368] <... futex resumed>) = 0 [pid 12366] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12365] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12370] rt_sigprocmask(SIG_SETMASK, [], [pid 12369] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] <... mprotect resumed>) = 0 [pid 12370] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12369] <... futex resumed>) = 1 [pid 12367] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12370] open(".", O_RDONLY [pid 12369] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12368] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... unlink resumed>) = 0 [pid 12369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12368] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12367] <... futex resumed>) = 0 [pid 12366] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12369] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12367] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12370] <... open resumed>) = 3 [pid 12369] <... fcntl resumed>) = 0 ./strace-static-x86_64: Process 12371 attached [pid 12370] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12369] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1185 [pid 12370] <... futex resumed>) = 1 [pid 12369] <... futex resumed>) = 1 [pid 12367] <... futex resumed>) = 0 [pid 12365] <... futex resumed>) = 0 [pid 5046] umount2("./599/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12370] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12369] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12367] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12365] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12365] <... futex resumed>) = 0 [pid 12371] set_robust_list(0x555556ac56a0, 24 [pid 12370] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12371] <... set_robust_list resumed>) = 0 [pid 12369] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12367] <... futex resumed>) = 0 [pid 12365] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12370] <... fcntl resumed>) = 0 [pid 12371] chdir("./591" [pid 12368] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(AT_FDCWD, "./599/binderfs", ./strace-static-x86_64: Process 12372 attached [pid 12371] <... chdir resumed>) = 0 [pid 12370] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12366] <... clone3 resumed> => {parent_tid=[1243]}, 88) = 1243 [pid 12372] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12370] <... futex resumed>) = 1 [pid 12369] <... openat resumed>) = 4 [pid 12368] <... mmap resumed>) = 0x7f504ff5f000 [pid 12367] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12366] rt_sigprocmask(SIG_SETMASK, [], [pid 12365] <... futex resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12372] <... rseq resumed>) = 0 [pid 12371] <... prctl resumed>) = 0 [pid 12370] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12368] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12366] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12365] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12372] set_robust_list(0x7f504ff7f9a0, 24 [pid 12371] setpgid(0, 0 [pid 12370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12368] <... mprotect resumed>) = 0 [pid 12366] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12365] <... futex resumed>) = 0 [pid 5046] unlink("./599/binderfs" [pid 12372] <... set_robust_list resumed>) = 0 [pid 12371] <... setpgid resumed>) = 0 [pid 12370] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12369] +++ killed by SIGIO +++ [pid 12368] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12366] <... futex resumed>) = 0 [pid 12365] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12368] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12366] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12373 attached => {parent_tid=[1223]}, 88) = 1223 [pid 12373] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12368] rt_sigprocmask(SIG_SETMASK, [], [pid 12373] <... rseq resumed>) = 0 [pid 12368] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12368] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12373] set_robust_list(0x7f504ff7f9a0, 24 [pid 12368] <... futex resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12373] <... set_robust_list resumed>) = 0 [pid 12371] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12368] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12373] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12373] open(".", O_RDONLY) = 3 [pid 12373] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12368] <... futex resumed>) = 0 [pid 12373] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12368] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12373] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12368] <... futex resumed>) = 0 [pid 12373] <... fcntl resumed>) = 0 [pid 12373] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12368] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12373] <... futex resumed>) = 0 [pid 12368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12373] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12368] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12368] <... futex resumed>) = 0 [pid 12367] +++ killed by SIGIO +++ [pid 12373] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12368] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1210, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12372] rt_sigprocmask(SIG_SETMASK, [], [pid 12371] <... symlink resumed>) = 0 [pid 12370] <... openat resumed>) = 4 [pid 12365] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5046] umount2("./599/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12372] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12371] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12370] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12368] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12365] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12373] <... openat resumed>) = 4 [pid 12372] open(".", O_RDONLY [pid 12368] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12371] <... symlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./599/cgroup", [pid 12372] <... open resumed>) = 3 [pid 12370] <... futex resumed>) = ? [pid 5047] umount2("./604", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12372] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12370] +++ killed by SIGIO +++ [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] openat(AT_FDCWD, "./604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5047] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12372] <... futex resumed>) = 1 [pid 12371] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12365] +++ killed by SIGIO +++ [pid 5046] unlink("./599/cgroup" [pid 12372] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12371] <... symlink resumed>) = 0 [pid 12366] <... futex resumed>) = 0 [pid 5047] getdents64(3, [pid 12372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12366] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... unlink resumed>) = 0 [pid 12372] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12366] <... futex resumed>) = 0 [pid 5046] umount2("./599/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12372] <... fcntl resumed>) = 0 [pid 12366] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] umount2("./604/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12372] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1241, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12372] <... futex resumed>) = 0 [pid 12371] <... openat resumed>) = 3 [pid 12366] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] newfstatat(AT_FDCWD, "./599/blkio.bfq.io_wait_time_recursive", [pid 12372] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12371] write(3, "1000", 4 [pid 12366] <... futex resumed>) = 0 [pid 5051] umount2("./619", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12366] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./604/cgroup.cpu", [pid 5051] openat(AT_FDCWD, "./619", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12372] <... openat resumed>) = 4 [pid 12371] <... write resumed>) = 4 [pid 5051] <... openat resumed>) = 3 [pid 5046] unlink("./599/blkio.bfq.io_wait_time_recursive" [pid 12371] close(3 [pid 5051] newfstatat(3, "", [pid 5047] unlink("./604/cgroup.cpu" [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12372] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12371] <... close resumed>) = 0 [pid 5051] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 12371] symlink("/dev/binderfs", "./binderfs" [pid 12366] <... futex resumed>) = ? [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./604/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12371] <... symlink resumed>) = 0 [pid 12373] +++ killed by SIGIO +++ [pid 12368] +++ killed by SIGIO +++ [pid 12371] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./619/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./599/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12371] <... futex resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1222, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] newfstatat(AT_FDCWD, "./604/binderfs", [pid 5051] newfstatat(AT_FDCWD, "./619/cgroup.cpu", [pid 5049] restart_syscall(<... resuming interrupted clone ...> [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12371] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... restart_syscall resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./604/binderfs" [pid 5051] unlink("./619/cgroup.cpu" [pid 5047] <... unlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./604/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./610", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./619/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12372] +++ killed by SIGIO +++ [pid 12366] +++ killed by SIGIO +++ [pid 12371] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1242, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] newfstatat(AT_FDCWD, "./599/cgroup.net", [pid 12371] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./604/cgroup", [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5051] newfstatat(AT_FDCWD, "./619/binderfs", [pid 5050] umount2("./619", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] openat(AT_FDCWD, "./610", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./599/cgroup.net" [pid 12371] <... mmap resumed>) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... openat resumed>) = 3 [pid 5047] unlink("./604/cgroup" [pid 12371] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] unlink("./619/binderfs" [pid 5050] openat(AT_FDCWD, "./619", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... unlink resumed>) = 0 [pid 12371] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 5046] <... unlink resumed>) = 0 [pid 5050] <... openat resumed>) = 3 [pid 5047] umount2("./604/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] umount2("./619/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(3, "", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12371] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] newfstatat(AT_FDCWD, "./604/blkio.bfq.io_wait_time_recursive", [pid 5046] getdents64(3, [pid 12371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./619/cgroup", [pid 5050] getdents64(3, [pid 5049] getdents64(3, [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12374 attached [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] close(3 [pid 12374] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12371] <... clone3 resumed> => {parent_tid=[1186]}, 88) = 1186 [pid 12374] <... rseq resumed>) = 0 [pid 12371] rt_sigprocmask(SIG_SETMASK, [], [pid 5046] <... close resumed>) = 0 [pid 12374] set_robust_list(0x7f504ff7f9a0, 24 [pid 12371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12374] <... set_robust_list resumed>) = 0 [pid 12371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./610/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] rmdir("./599" [pid 12374] rt_sigprocmask(SIG_SETMASK, [], [pid 12371] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12374] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12371] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./610/cgroup.cpu", [pid 5046] <... rmdir resumed>) = 0 [pid 12374] open(".", O_RDONLY [pid 5051] unlink("./619/cgroup" [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./604/blkio.bfq.io_wait_time_recursive" [pid 12374] <... open resumed>) = 3 [pid 5049] unlink("./610/cgroup.cpu") = 0 [pid 12374] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12374] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12371] <... futex resumed>) = 0 [pid 12371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5047] <... unlink resumed>) = 0 [pid 12374] <... futex resumed>) = 0 [pid 12371] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] umount2("./610/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./600", 0777 [pid 12374] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 5051] <... unlink resumed>) = 0 [pid 5050] umount2("./619/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] umount2("./604/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12374] <... fcntl resumed>) = 0 [pid 5051] umount2("./619/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./619/cgroup.cpu", [pid 5049] newfstatat(AT_FDCWD, "./610/binderfs", [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12374] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./604/cgroup.net", [pid 5046] <... mkdir resumed>) = 0 [pid 12374] <... futex resumed>) = 1 [pid 12371] <... futex resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./619/blkio.bfq.io_wait_time_recursive", [pid 5050] unlink("./619/cgroup.cpu" [pid 12374] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12371] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./610/binderfs" [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12374] <... openat resumed>) = 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12371] <... futex resumed>) = 0 [pid 5051] unlink("./619/blkio.bfq.io_wait_time_recursive" [pid 12374] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] umount2("./619/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./604/cgroup.net" [pid 5051] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12375 attached [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1202 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./619/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./610/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] newfstatat(AT_FDCWD, "./619/binderfs", [pid 5047] getdents64(3, [pid 12375] set_robust_list(0x555556ac56a0, 24 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12375] <... set_robust_list resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12375] chdir("./600" [pid 12374] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] unlink("./619/binderfs" [pid 5049] newfstatat(AT_FDCWD, "./610/cgroup", [pid 5047] close(3 [pid 12375] <... chdir resumed>) = 0 [pid 12375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] <... close resumed>) = 0 [pid 12375] setpgid(0, 0) = 0 [pid 12375] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5047] rmdir("./604" [pid 12375] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12375] <... symlink resumed>) = 0 [pid 12375] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5047] <... rmdir resumed>) = 0 [pid 12375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 12375] write(3, "1000", 4) = 4 [pid 12375] close(3) = 0 [pid 12375] symlink("/dev/binderfs", "./binderfs") = 0 [pid 12375] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12375] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12375] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5051] newfstatat(AT_FDCWD, "./619/cgroup.net", [pid 5049] unlink("./610/cgroup" [pid 12375] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12375] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] <... unlink resumed>) = 0 [pid 5050] umount2("./619/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] unlink("./619/cgroup.net" [pid 5047] mkdir("./605", 0777 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12375] <... mprotect resumed>) = 0 [pid 12375] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5051] <... unlink resumed>) = 0 [pid 5050] newfstatat(AT_FDCWD, "./619/cgroup", [pid 12375] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12375] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5047] <... mkdir resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./610/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12376 attached [pid 12375] <... clone3 resumed> => {parent_tid=[1203]}, 88) = 1203 [pid 12376] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12375] rt_sigprocmask(SIG_SETMASK, [], [pid 12376] <... rseq resumed>) = 0 [pid 12376] set_robust_list(0x7f504ff7f9a0, 24 [pid 12375] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12376] <... set_robust_list resumed>) = 0 [pid 12375] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12376] open(".", O_RDONLY [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./610/blkio.bfq.io_wait_time_recursive", [pid 12376] <... open resumed>) = 3 [pid 12375] <... futex resumed>) = 0 [pid 12375] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12376] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12376] <... futex resumed>) = 0 [pid 12375] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12376] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT) = 0 [pid 12375] <... futex resumed>) = 0 [pid 12375] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12376] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12376] <... futex resumed>) = 0 [pid 12375] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12376] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12375] <... futex resumed>) = 0 [pid 12375] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12376] <... openat resumed>) = 4 [pid 5051] getdents64(3, [pid 5050] unlink("./619/cgroup" [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12371] +++ killed by SIGIO +++ [pid 5049] unlink("./610/blkio.bfq.io_wait_time_recursive" [pid 12376] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12375] <... futex resumed>) = ? [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 12376] +++ killed by SIGIO +++ [pid 12375] +++ killed by SIGIO +++ [pid 5051] close(3 [pid 5050] umount2("./619/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] umount2("./610/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1185, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] restart_syscall(<... resuming interrupted clone ...> [pid 5050] newfstatat(AT_FDCWD, "./619/blkio.bfq.io_wait_time_recursive", [pid 5049] newfstatat(AT_FDCWD, "./610/cgroup.net", [pid 5045] <... restart_syscall resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] unlink("./619/blkio.bfq.io_wait_time_recursive" [pid 5049] unlink("./610/cgroup.net" [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1202, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] umount2("./600", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] openat(AT_FDCWD, "./600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5051] <... close resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... openat resumed>) = 3 [pid 5045] umount2("./591", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./619/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] getdents64(3, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] rmdir("./619" [pid 5045] openat(AT_FDCWD, "./591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] <... rmdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5046] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] mkdir("./620", 0777 [pid 5046] getdents64(3, [pid 5051] <... mkdir resumed>) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./600/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./600/cgroup.cpu", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(3, "", [pid 5046] unlink("./600/cgroup.cpu" [pid 5049] <... close resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] newfstatat(AT_FDCWD, "./619/cgroup.net", [pid 5049] rmdir("./610" [pid 5045] getdents64(3, ./strace-static-x86_64: Process 12377 attached [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1212 ./strace-static-x86_64: Process 12378 attached [pid 12377] set_robust_list(0x555556ac56a0, 24 [pid 5050] unlink("./619/cgroup.net" [pid 5049] <... rmdir resumed>) = 0 [pid 5046] umount2("./600/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12377] <... set_robust_list resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1243 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] umount2("./591/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12377] chdir("./605" [pid 5046] newfstatat(AT_FDCWD, "./600/binderfs", [pid 12377] <... chdir resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12377] setpgid(0, 0 [pid 5046] unlink("./600/binderfs" [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12378] set_robust_list(0x555556ac56a0, 24 [pid 12377] <... setpgid resumed>) = 0 [pid 5050] <... unlink resumed>) = 0 [pid 5049] mkdir("./611", 0777 [pid 5045] newfstatat(AT_FDCWD, "./591/cgroup.cpu", [pid 12378] <... set_robust_list resumed>) = 0 [pid 12377] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 5050] getdents64(3, [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12378] chdir("./620" [pid 12377] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 5046] umount2("./600/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] unlink("./591/cgroup.cpu" [pid 12378] <... chdir resumed>) = 0 [pid 12377] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 5050] close(3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12378] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12377] <... symlink resumed>) = 0 [pid 5050] <... close resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./600/cgroup", [pid 12378] <... prctl resumed>) = 0 [pid 5050] rmdir("./619" [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] umount2("./591/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12378] setpgid(0, 0 [pid 12377] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 5046] unlink("./600/cgroup" [pid 12378] <... setpgid resumed>) = 0 [pid 5050] <... rmdir resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12378] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12377] <... symlink resumed>) = 0 [pid 5046] umount2("./600/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./600/blkio.bfq.io_wait_time_recursive", [pid 12377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./600/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 12379 attached [pid 5045] newfstatat(AT_FDCWD, "./591/binderfs", [pid 12379] set_robust_list(0x555556ac56a0, 24 [pid 12378] <... symlink resumed>) = 0 [pid 5050] mkdir("./620", 0777 [pid 5046] <... unlink resumed>) = 0 [pid 12379] <... set_robust_list resumed>) = 0 [pid 12379] chdir("./611" [pid 12377] <... openat resumed>) = 3 [pid 5046] umount2("./600/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12377] write(3, "1000", 4 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12379] <... chdir resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./600/cgroup.net", [pid 12379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12379] <... prctl resumed>) = 0 [pid 12379] setpgid(0, 0 [pid 5046] unlink("./600/cgroup.net" [pid 12379] <... setpgid resumed>) = 0 [pid 12377] <... write resumed>) = 4 [pid 5046] <... unlink resumed>) = 0 [pid 12379] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 5046] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12377] close(3 [pid 5046] close(3 [pid 12377] <... close resumed>) = 0 [pid 12378] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu") = 0 [pid 12377] symlink("/dev/binderfs", "./binderfs" [pid 5050] <... mkdir resumed>) = 0 [pid 5045] unlink("./591/binderfs" [pid 12378] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1224 [pid 5046] <... close resumed>) = 0 [pid 12378] <... symlink resumed>) = 0 [pid 12377] <... symlink resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12377] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] rmdir("./600" [pid 12379] <... symlink resumed>) = 0 [pid 12378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12377] <... futex resumed>) = 0 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5046] <... rmdir resumed>) = 0 [pid 5045] umount2("./591/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12379] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12377] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] mkdir("./601", 0777 [pid 5045] newfstatat(AT_FDCWD, "./591/cgroup", [pid 5046] <... mkdir resumed>) = 0 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12381 attached [pid 12379] <... symlink resumed>) = 0 [pid 12381] set_robust_list(0x555556ac56a0, 24 [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1204 [pid 12381] <... set_robust_list resumed>) = 0 [pid 12381] chdir("./601") = 0 [pid 12381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12381] setpgid(0, 0) = 0 [pid 12381] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 12379] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12378] <... openat resumed>) = 3 [pid 12377] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 ./strace-static-x86_64: Process 12380 attached [pid 12379] <... symlink resumed>) = 0 [pid 12378] write(3, "1000", 4 [pid 12377] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1244 [pid 5045] unlink("./591/cgroup" [pid 12381] <... symlink resumed>) = 0 [pid 12380] set_robust_list(0x555556ac56a0, 24 [pid 12379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12378] <... write resumed>) = 4 [pid 12377] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12381] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12378] close(3 [pid 12381] <... symlink resumed>) = 0 [pid 12377] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5045] <... unlink resumed>) = 0 [pid 12381] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 12379] <... openat resumed>) = 3 [pid 12378] <... close resumed>) = 0 [pid 5045] umount2("./591/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12378] symlink("/dev/binderfs", "./binderfs" [pid 12381] <... symlink resumed>) = 0 [pid 12377] <... mmap resumed>) = 0x7f504ff5f000 [pid 12381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12378] <... symlink resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12379] write(3, "1000", 4 [pid 12377] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5045] newfstatat(AT_FDCWD, "./591/blkio.bfq.io_wait_time_recursive", [pid 12378] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12377] <... mprotect resumed>) = 0 [pid 12381] <... openat resumed>) = 3 [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12378] <... futex resumed>) = 0 [pid 12381] write(3, "1000", 4) = 4 [pid 12381] close(3 [pid 12377] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12378] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5045] unlink("./591/blkio.bfq.io_wait_time_recursive" [pid 12377] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12378] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12381] <... close resumed>) = 0 [pid 12381] symlink("/dev/binderfs", "./binderfs" [pid 5045] <... unlink resumed>) = 0 [pid 12378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12377] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12378] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12381] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 12382 attached [pid 12381] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12379] <... write resumed>) = 4 [pid 12378] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12382] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12379] close(3 [pid 12382] <... rseq resumed>) = 0 [pid 12381] <... futex resumed>) = 0 [pid 12382] set_robust_list(0x7f504ff7f9a0, 24 [pid 12381] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12379] <... close resumed>) = 0 [pid 12378] <... mprotect resumed>) = 0 [pid 12377] <... clone3 resumed> => {parent_tid=[1213]}, 88) = 1213 [pid 5045] umount2("./591/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12382] <... set_robust_list resumed>) = 0 [pid 12381] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12382] rt_sigprocmask(SIG_SETMASK, [], [pid 12381] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12381] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12379] symlink("/dev/binderfs", "./binderfs" [pid 12378] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12377] rt_sigprocmask(SIG_SETMASK, [], [pid 12382] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12377] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12377] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12381] <... mmap resumed>) = 0x7f504ff5f000 [pid 12378] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5045] newfstatat(AT_FDCWD, "./591/cgroup.net", [pid 12381] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12381] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12381] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12383 attached => {parent_tid=[1205]}, 88) = 1205 [pid 12383] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12381] rt_sigprocmask(SIG_SETMASK, [], [pid 12383] <... rseq resumed>) = 0 [pid 12382] <... futex resumed>) = 0 [pid 12381] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12380] <... set_robust_list resumed>) = 0 [pid 12379] <... symlink resumed>) = 0 [pid 12377] <... futex resumed>) = 1 ./strace-static-x86_64: Process 12384 attached [pid 5045] unlink("./591/cgroup.net" [pid 12382] open(".", O_RDONLY [pid 12380] chdir("./620" [pid 5045] <... unlink resumed>) = 0 [pid 12384] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12378] <... clone3 resumed> => {parent_tid=[1244]}, 88) = 1244 [pid 12377] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12383] set_robust_list(0x7f504ff7f9a0, 24 [pid 12381] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] <... chdir resumed>) = 0 [pid 12383] <... set_robust_list resumed>) = 0 [pid 12382] <... open resumed>) = 3 [pid 12381] <... futex resumed>) = 0 [pid 12383] rt_sigprocmask(SIG_SETMASK, [], [pid 12382] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12381] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12382] <... futex resumed>) = 1 [pid 12377] <... futex resumed>) = 0 [pid 12383] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12382] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12377] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12383] open(".", O_RDONLY [pid 12382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12377] <... futex resumed>) = 0 [pid 12384] <... rseq resumed>) = 0 [pid 12382] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12379] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12378] rt_sigprocmask(SIG_SETMASK, [], [pid 12377] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] getdents64(3, [pid 12384] set_robust_list(0x7f504ff7f9a0, 24 [pid 12383] <... open resumed>) = 3 [pid 12382] <... fcntl resumed>) = 0 [pid 12380] <... prctl resumed>) = 0 [pid 12379] <... futex resumed>) = 0 [pid 12378] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12384] <... set_robust_list resumed>) = 0 [pid 12383] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12382] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] setpgid(0, 0 [pid 12379] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] close(3 [pid 12384] rt_sigprocmask(SIG_SETMASK, [], [pid 12383] <... futex resumed>) = 1 [pid 12382] <... futex resumed>) = 1 [pid 12381] <... futex resumed>) = 0 [pid 12380] <... setpgid resumed>) = 0 [pid 12379] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12378] <... futex resumed>) = 0 [pid 12377] <... futex resumed>) = 0 [pid 12384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12383] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12382] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12381] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12379] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12378] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] <... close resumed>) = 0 [pid 12384] open(".", O_RDONLY [pid 12383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12381] <... futex resumed>) = 0 [pid 12380] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12377] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12384] <... open resumed>) = 3 [pid 12383] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12382] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12381] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12377] <... futex resumed>) = 0 [pid 5045] rmdir("./591" [pid 12384] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12383] <... fcntl resumed>) = 0 [pid 12382] <... openat resumed>) = 4 [pid 12379] <... mmap resumed>) = 0x7f504ff5f000 [pid 5045] <... rmdir resumed>) = 0 [pid 12384] <... futex resumed>) = 1 [pid 12379] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 12378] <... futex resumed>) = 0 [pid 12384] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12379] <... mprotect resumed>) = 0 [pid 12384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12383] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12382] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] <... symlink resumed>) = 0 [pid 12379] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12378] <... futex resumed>) = 0 [pid 12377] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12384] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12383] <... futex resumed>) = 1 [pid 12382] <... futex resumed>) = ? [pid 12381] <... futex resumed>) = 0 [pid 12380] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12383] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12382] +++ killed by SIGIO +++ [pid 12384] <... fcntl resumed>) = 0 [pid 12379] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12378] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5045] mkdir("./592", 0777 [pid 12384] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12384] <... futex resumed>) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12384] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12378] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12385 attached [pid 12384] <... openat resumed>) = 4 [pid 12383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12381] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] <... symlink resumed>) = 0 [pid 12379] <... clone3 resumed> => {parent_tid=[1225]}, 88) = 1225 [pid 12383] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12381] <... futex resumed>) = 0 [pid 12381] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12385] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12379] rt_sigprocmask(SIG_SETMASK, [], [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12385] <... rseq resumed>) = 0 [pid 12384] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12383] <... openat resumed>) = 4 [pid 12381] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 12380] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 12379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12378] <... futex resumed>) = 0 [pid 12377] +++ killed by SIGIO +++ [pid 12385] set_robust_list(0x7f504ff7f9a0, 24 [pid 12383] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12381] restart_syscall(<... resuming interrupted futex ...> [pid 12380] <... symlink resumed>) = 0 [pid 12379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 12386 attached [pid 12385] <... set_robust_list resumed>) = 0 [pid 12381] <... restart_syscall resumed>) = ? [pid 12380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1212, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12385] rt_sigprocmask(SIG_SETMASK, [], [pid 12383] +++ killed by SIGIO +++ [pid 12379] <... futex resumed>) = 0 [pid 12385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12380] <... openat resumed>) = 3 [pid 5047] restart_syscall(<... resuming interrupted clone ...> [pid 12380] write(3, "1000", 4 [pid 12385] open(".", O_RDONLY [pid 12380] <... write resumed>) = 4 [pid 12385] <... open resumed>) = 3 [pid 12385] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12379] <... futex resumed>) = 0 [pid 12385] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12379] <... futex resumed>) = 0 [pid 12385] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12385] <... fcntl resumed>) = 0 [pid 12385] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1187 [pid 12385] <... futex resumed>) = 1 [pid 12379] <... futex resumed>) = 0 [pid 12385] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12384] +++ killed by SIGIO +++ [pid 12379] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12378] +++ killed by SIGIO +++ [pid 12385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12379] <... futex resumed>) = 0 [pid 12385] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12379] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1243, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12386] set_robust_list(0x555556ac56a0, 24 [pid 12381] +++ killed by SIGIO +++ [pid 12380] close(3 [pid 5047] <... restart_syscall resumed>) = 0 [pid 12386] <... set_robust_list resumed>) = 0 [pid 12385] <... openat resumed>) = 4 [pid 12380] <... close resumed>) = 0 [pid 12379] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] restart_syscall(<... resuming interrupted clone ...> [pid 12386] chdir("./592" [pid 12385] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12380] symlink("/dev/binderfs", "./binderfs" [pid 12379] restart_syscall(<... resuming interrupted futex ...> [pid 5051] <... restart_syscall resumed>) = 0 [pid 12386] <... chdir resumed>) = 0 [pid 12379] <... restart_syscall resumed>) = ? [pid 12380] <... symlink resumed>) = 0 [pid 12386] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12380] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12385] +++ killed by SIGIO +++ [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1204, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 12386] <... prctl resumed>) = 0 [pid 12380] <... futex resumed>) = 0 [pid 5047] umount2("./605", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./601", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12386] setpgid(0, 0 [pid 12380] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12386] <... setpgid resumed>) = 0 [pid 12380] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5047] openat(AT_FDCWD, "./605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] openat(AT_FDCWD, "./601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12386] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5047] <... openat resumed>) = 3 [pid 5046] <... openat resumed>) = 3 [pid 12386] <... symlink resumed>) = 0 [pid 12380] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] newfstatat(3, "", [pid 12380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12380] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] newfstatat(3, "", [pid 5046] getdents64(3, [pid 12380] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12386] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 12380] <... mprotect resumed>) = 0 [pid 5047] getdents64(3, [pid 5046] umount2("./601/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12386] <... symlink resumed>) = 0 [pid 12380] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12379] +++ killed by SIGIO +++ [pid 5051] umount2("./620", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12380] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12380] <... clone3 resumed> => {parent_tid=[1245]}, 88) = 1245 [pid 5047] umount2("./605/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./601/cgroup.cpu", ./strace-static-x86_64: Process 12387 attached [pid 12386] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12380] rt_sigprocmask(SIG_SETMASK, [], [pid 5051] openat(AT_FDCWD, "./620", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12387] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12386] <... symlink resumed>) = 0 [pid 12380] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5051] <... openat resumed>) = 3 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1224, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5047] newfstatat(AT_FDCWD, "./605/cgroup.cpu", [pid 5046] unlink("./601/cgroup.cpu" [pid 12387] <... rseq resumed>) = 0 [pid 12386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] newfstatat(3, "", [pid 5049] umount2("./611", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12387] set_robust_list(0x7f504ff7f9a0, 24 [pid 12380] <... futex resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12387] <... set_robust_list resumed>) = 0 [pid 12386] <... openat resumed>) = 3 [pid 12380] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 5051] getdents64(3, [pid 12387] rt_sigprocmask(SIG_SETMASK, [], [pid 12386] write(3, "1000", 4 [pid 5049] openat(AT_FDCWD, "./611", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./605/cgroup.cpu" [pid 12386] <... write resumed>) = 4 [pid 5046] umount2("./601/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12386] close(3 [pid 5049] <... openat resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12386] <... close resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./601/binderfs", [pid 12387] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12386] symlink("/dev/binderfs", "./binderfs" [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12387] open(".", O_RDONLY [pid 12386] <... symlink resumed>) = 0 [pid 5049] newfstatat(3, "", [pid 12386] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12386] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12386] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5046] unlink("./601/binderfs" [pid 12386] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] <... unlink resumed>) = 0 [pid 12386] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5046] umount2("./601/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12387] <... open resumed>) = 3 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12387] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] umount2("./620/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12388 attached [pid 5046] newfstatat(AT_FDCWD, "./601/cgroup", [pid 12388] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12386] <... clone3 resumed> => {parent_tid=[1188]}, 88) = 1188 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12388] <... rseq resumed>) = 0 [pid 12386] rt_sigprocmask(SIG_SETMASK, [], [pid 12388] set_robust_list(0x7f504ff7f9a0, 24 [pid 12386] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] unlink("./601/cgroup" [pid 12388] <... set_robust_list resumed>) = 0 [pid 12386] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... unlink resumed>) = 0 [pid 12388] rt_sigprocmask(SIG_SETMASK, [], [pid 12386] <... futex resumed>) = 0 [pid 12388] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12388] open(".", O_RDONLY) = 3 [pid 12386] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12387] <... futex resumed>) = 1 [pid 5046] umount2("./601/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12380] <... futex resumed>) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./601/blkio.bfq.io_wait_time_recursive", [pid 12388] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12386] <... futex resumed>) = 0 [pid 12386] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12388] <... futex resumed>) = 1 [pid 12386] <... futex resumed>) = 0 [pid 12388] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12386] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] unlink("./601/blkio.bfq.io_wait_time_recursive" [pid 12387] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12388] <... fcntl resumed>) = 0 [pid 12380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] getdents64(3, [pid 5047] umount2("./605/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... unlink resumed>) = 0 [pid 12387] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12380] <... futex resumed>) = 0 [pid 12388] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12386] <... futex resumed>) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12388] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12387] <... fcntl resumed>) = 0 [pid 12386] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12387] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12386] <... futex resumed>) = 0 [pid 12380] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] newfstatat(AT_FDCWD, "./620/cgroup.cpu", [pid 5049] umount2("./611/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./605/binderfs", [pid 5046] umount2("./601/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12388] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12387] <... futex resumed>) = 0 [pid 12386] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12380] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12388] <... openat resumed>) = 4 [pid 12387] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12380] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12388] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12386] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./601/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12387] <... openat resumed>) = 4 [pid 5051] unlink("./620/cgroup.cpu" [pid 5049] newfstatat(AT_FDCWD, "./611/cgroup.cpu", [pid 5047] unlink("./605/binderfs" [pid 12387] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12380] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5051] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5046] unlink("./601/cgroup.net" [pid 12387] <... futex resumed>) = ? [pid 5051] umount2("./620/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] unlink("./611/cgroup.cpu" [pid 5047] umount2("./605/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12387] +++ killed by SIGIO +++ [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./620/binderfs", [pid 5046] getdents64(3, [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./611/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./605/cgroup", [pid 12388] +++ killed by SIGIO +++ [pid 12386] +++ killed by SIGIO +++ [pid 5051] unlink("./620/binderfs" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12380] +++ killed by SIGIO +++ [pid 5046] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5049] newfstatat(AT_FDCWD, "./611/binderfs", [pid 5046] <... close resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1244, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] rmdir("./601" [pid 5051] umount2("./620/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] unlink("./605/cgroup" [pid 5045] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1187, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] unlink("./611/binderfs" [pid 5046] <... rmdir resumed>) = 0 [pid 5051] newfstatat(AT_FDCWD, "./620/cgroup", [pid 5045] umount2("./592", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./620", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] mkdir("./602", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 5051] unlink("./620/cgroup" [pid 5049] umount2("./611/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] openat(AT_FDCWD, "./592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./605/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... mkdir resumed>) = 0 [pid 5045] <... openat resumed>) = 3 [pid 5050] openat(AT_FDCWD, "./620", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5050] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5050] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5051] umount2("./620/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] umount2("./620/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./611/cgroup", [pid 5047] newfstatat(AT_FDCWD, "./605/blkio.bfq.io_wait_time_recursive", [pid 5045] newfstatat(3, "", [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12389 attached [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1206 [pid 5045] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5051] newfstatat(AT_FDCWD, "./620/blkio.bfq.io_wait_time_recursive", [pid 12389] set_robust_list(0x555556ac56a0, 24 [pid 5050] newfstatat(AT_FDCWD, "./620/cgroup.cpu", [pid 5051] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] unlink("./611/cgroup" [pid 12389] <... set_robust_list resumed>) = 0 [pid 5051] unlink("./620/blkio.bfq.io_wait_time_recursive" [pid 5049] <... unlink resumed>) = 0 [pid 5047] unlink("./605/blkio.bfq.io_wait_time_recursive" [pid 5045] getdents64(3, [pid 12389] chdir("./602" [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] umount2("./611/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12389] <... chdir resumed>) = 0 [pid 5050] unlink("./620/cgroup.cpu" [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... unlink resumed>) = 0 [pid 5045] umount2("./592/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] newfstatat(AT_FDCWD, "./611/blkio.bfq.io_wait_time_recursive", [pid 12389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5051] umount2("./620/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... unlink resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] umount2("./605/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12389] <... prctl resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] umount2("./620/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12389] setpgid(0, 0 [pid 5051] newfstatat(AT_FDCWD, "./620/cgroup.net", [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12389] <... setpgid resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] newfstatat(AT_FDCWD, "./620/binderfs", [pid 5049] unlink("./611/blkio.bfq.io_wait_time_recursive" [pid 5047] newfstatat(AT_FDCWD, "./605/cgroup.net", [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12389] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] unlink("./620/cgroup.net" [pid 12389] <... symlink resumed>) = 0 [pid 5051] <... unlink resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... unlink resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] newfstatat(AT_FDCWD, "./592/cgroup.cpu", [pid 12389] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 5051] getdents64(3, 0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5051] close(3 [pid 12389] <... symlink resumed>) = 0 [pid 5051] <... close resumed>) = 0 [pid 5051] rmdir("./620" [pid 5050] unlink("./620/binderfs") = 0 [pid 5049] umount2("./611/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5051] <... rmdir resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] newfstatat(AT_FDCWD, "./611/cgroup.net", [pid 12389] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] unlink("./605/cgroup.net" [pid 5051] mkdir("./621", 0777 [pid 5050] umount2("./620/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12389] <... symlink resumed>) = 0 [pid 5051] <... mkdir resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5051] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] newfstatat(AT_FDCWD, "./620/cgroup", [pid 5049] unlink("./611/cgroup.net" [pid 12389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5047] getdents64(3, [pid 5045] unlink("./592/cgroup.cpu" [pid 12389] <... openat resumed>) = 3 [pid 5045] <... unlink resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5047] close(3 [pid 12389] write(3, "1000", 4 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] <... close resumed>) = 0 [pid 12389] <... write resumed>) = 4 [pid 5047] rmdir("./605" [pid 5045] umount2("./592/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12390 attached [pid 12389] close(3 [pid 5050] unlink("./620/cgroup" [pid 5049] <... unlink resumed>) = 0 [pid 12390] set_robust_list(0x555556ac56a0, 24 [pid 12389] <... close resumed>) = 0 [pid 5051] <... clone resumed>, child_tidptr=0x555556ac5690) = 1245 [pid 5050] <... unlink resumed>) = 0 [pid 5049] getdents64(3, [pid 5047] <... rmdir resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12390] <... set_robust_list resumed>) = 0 [pid 12389] symlink("/dev/binderfs", "./binderfs" [pid 5050] umount2("./620/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5049] close(3 [pid 5050] newfstatat(AT_FDCWD, "./620/blkio.bfq.io_wait_time_recursive", [pid 5045] newfstatat(AT_FDCWD, "./592/binderfs", [pid 5050] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] <... close resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5049] rmdir("./611" [pid 12390] chdir("./621" [pid 12389] <... symlink resumed>) = 0 [pid 5050] unlink("./620/blkio.bfq.io_wait_time_recursive" [pid 5049] <... rmdir resumed>) = 0 [pid 5047] mkdir("./606", 0777 [pid 5045] unlink("./592/binderfs" [pid 12390] <... chdir resumed>) = 0 [pid 12389] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5050] <... unlink resumed>) = 0 [pid 12390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12389] <... futex resumed>) = 0 [pid 5050] umount2("./620/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5049] mkdir("./612", 0777 [pid 12390] <... prctl resumed>) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12390] setpgid(0, 0 [pid 12389] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 5050] newfstatat(AT_FDCWD, "./620/cgroup.net", [pid 12390] <... setpgid resumed>) = 0 [pid 12389] <... rt_sigaction resumed>NULL, 8) = 0 [pid 5049] <... mkdir resumed>) = 0 [pid 12390] symlink("/syzcgroup/unified/syz5", "./cgroup" [pid 12389] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12389] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5050] unlink("./620/cgroup.net" [pid 12389] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12389] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 12391 attached [pid 12391] set_robust_list(0x555556ac56a0, 24 [pid 12389] <... mprotect resumed>) = 0 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1226 [pid 12391] <... set_robust_list resumed>) = 0 [pid 12391] chdir("./612" [pid 12389] rt_sigprocmask(SIG_BLOCK, ~[], [pid 12391] <... chdir resumed>) = 0 [pid 12391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 12391] setpgid(0, 0) = 0 [pid 12391] symlink("/syzcgroup/unified/syz3", "./cgroup") = 0 [pid 12389] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12389] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 12391] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu"./strace-static-x86_64: Process 12392 attached [pid 12392] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12389] <... clone3 resumed> => {parent_tid=[1207]}, 88) = 1207 [pid 12389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12392] <... rseq resumed>) = 0 [pid 12392] set_robust_list(0x7f504ff7f9a0, 24 [pid 12391] <... symlink resumed>) = 0 [pid 12389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12392] <... set_robust_list resumed>) = 0 [pid 12389] <... futex resumed>) = 0 [pid 12392] rt_sigprocmask(SIG_SETMASK, [], [pid 12389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12391] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12392] open(".", O_RDONLY [pid 12391] <... symlink resumed>) = 0 [pid 12391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12392] <... open resumed>) = 3 [pid 12391] <... openat resumed>) = 3 [pid 12392] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12389] <... futex resumed>) = 0 [pid 12389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12392] <... futex resumed>) = 1 [pid 12389] <... futex resumed>) = 0 [pid 12392] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12391] write(3, "1000", 4 [pid 12389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12392] <... fcntl resumed>) = 0 [pid 12391] <... write resumed>) = 4 [pid 12392] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12391] close(3 [pid 12389] <... futex resumed>) = 0 [pid 12392] <... futex resumed>) = 1 [pid 12391] <... close resumed>) = 0 [pid 12389] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12392] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12391] symlink("/dev/binderfs", "./binderfs" [pid 12389] <... futex resumed>) = 0 [pid 12391] <... symlink resumed>) = 0 [pid 12389] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12391] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12391] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12391] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 12391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 12391] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 12391] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 12391] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12393 attached => {parent_tid=[1227]}, 88) = 1227 [pid 12391] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12391] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12391] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12393] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053) = 0 [pid 12393] set_robust_list(0x7f504ff7f9a0, 24) = 0 [pid 12393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 12393] open(".", O_RDONLY) = 3 [pid 12393] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12391] <... futex resumed>) = 0 [pid 12393] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12391] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12393] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12391] <... futex resumed>) = 0 [pid 12393] <... fcntl resumed>) = 0 [pid 12391] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12393] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12391] <... futex resumed>) = 0 [pid 12393] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12391] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 12391] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5047] <... mkdir resumed>) = 0 [pid 12392] <... openat resumed>) = 4 [pid 12390] <... symlink resumed>) = 0 [pid 5047] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5045] <... unlink resumed>) = 0 [pid 12393] <... openat resumed>) = 4 [pid 12390] symlink("/syzcgroup/cpu/syz5", "./cgroup.cpu" [pid 5050] <... unlink resumed>) = 0 [pid 5050] getdents64(3, [pid 12390] <... symlink resumed>) = 0 [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5050] close(3 [pid 12392] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5050] <... close resumed>) = 0 [pid 5050] rmdir("./620" [pid 12389] <... futex resumed>) = ? [pid 5050] <... rmdir resumed>) = 0 [pid 12390] symlink("/syzcgroup/net/syz5", "./cgroup.net" [pid 12393] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 5045] umount2("./592/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12390] <... symlink resumed>) = 0 [pid 5050] mkdir("./621", 0777 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5045] newfstatat(AT_FDCWD, "./592/cgroup", [pid 12393] +++ killed by SIGIO +++ [pid 12390] <... openat resumed>) = 3 [pid 5050] <... mkdir resumed>) = 0 [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] unlink("./592/cgroup" [pid 12390] write(3, "1000", 4./strace-static-x86_64: Process 12394 attached [pid 12394] set_robust_list(0x555556ac56a0, 24) = 0 [pid 12394] chdir("./606" [pid 5045] <... unlink resumed>) = 0 [pid 12390] <... write resumed>) = 4 [pid 12394] <... chdir resumed>) = 0 [pid 12391] <... futex resumed>) = ? [pid 12390] close(3 [pid 5050] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] <... clone resumed>, child_tidptr=0x555556ac5690) = 1214 [pid 5045] umount2("./592/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12390] <... close resumed>) = 0 [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12392] +++ killed by SIGIO +++ [pid 12390] symlink("/dev/binderfs", "./binderfs" [pid 12389] +++ killed by SIGIO +++ [pid 5045] newfstatat(AT_FDCWD, "./592/blkio.bfq.io_wait_time_recursive", [pid 12394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12390] <... symlink resumed>) = 0 [pid 5046] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1206, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12390] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5045] unlink("./592/blkio.bfq.io_wait_time_recursive"./strace-static-x86_64: Process 12395 attached [pid 12394] <... prctl resumed>) = 0 [pid 12390] <... futex resumed>) = 0 [pid 5045] <... unlink resumed>) = 0 [pid 12394] setpgid(0, 0 [pid 12390] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12394] <... setpgid resumed>) = 0 [pid 12390] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12394] symlink("/syzcgroup/unified/syz2", "./cgroup" [pid 12390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5045] umount2("./592/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] umount2("./602", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12390] <... mmap resumed>) = 0x7f504ff5f000 [pid 5046] openat(AT_FDCWD, "./602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12395] set_robust_list(0x555556ac56a0, 24 [pid 12394] <... symlink resumed>) = 0 [pid 12390] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5046] <... openat resumed>) = 3 [pid 5045] newfstatat(AT_FDCWD, "./592/cgroup.net", [pid 12395] <... set_robust_list resumed>) = 0 [pid 12394] symlink("/syzcgroup/cpu/syz2", "./cgroup.cpu" [pid 12390] <... mprotect resumed>) = 0 [pid 5050] <... clone resumed>, child_tidptr=0x555556ac5690) = 1246 [pid 5046] newfstatat(3, "", [pid 5045] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12395] chdir("./621" [pid 12394] <... symlink resumed>) = 0 [pid 12391] +++ killed by SIGIO +++ [pid 5046] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12395] <... chdir resumed>) = 0 [pid 12394] symlink("/syzcgroup/net/syz2", "./cgroup.net" [pid 12390] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5046] getdents64(3, [pid 5045] unlink("./592/cgroup.net" [pid 12394] <... symlink resumed>) = 0 [pid 5049] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1226, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12390] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] umount2("./612", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] umount2("./602/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12395] <... prctl resumed>) = 0 [pid 12395] setpgid(0, 0 [pid 12390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5045] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12396 attached [pid 12395] <... setpgid resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5045] getdents64(3, [pid 12396] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12394] <... openat resumed>) = 3 [pid 12396] <... rseq resumed>) = 0 [pid 12390] <... clone3 resumed> => {parent_tid=[1246]}, 88) = 1246 [pid 5049] openat(AT_FDCWD, "./612", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5046] newfstatat(AT_FDCWD, "./602/cgroup.cpu", [pid 5045] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12396] set_robust_list(0x7f504ff7f9a0, 24 [pid 12395] symlink("/syzcgroup/unified/syz4", "./cgroup" [pid 12390] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] <... openat resumed>) = 3 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12396] <... set_robust_list resumed>) = 0 [pid 12394] write(3, "1000", 4 [pid 12390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5045] close(3 [pid 12396] rt_sigprocmask(SIG_SETMASK, [], [pid 12394] <... write resumed>) = 4 [pid 12390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(3, "", [pid 5046] unlink("./602/cgroup.cpu" [pid 12396] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12394] close(3 [pid 12390] <... futex resumed>) = 0 [pid 5045] <... close resumed>) = 0 [pid 12395] <... symlink resumed>) = 0 [pid 12395] symlink("/syzcgroup/cpu/syz4", "./cgroup.cpu" [pid 12394] <... close resumed>) = 0 [pid 12390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12396] open(".", O_RDONLY [pid 5045] rmdir("./592" [pid 12394] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5049] getdents64(3, 0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5046] umount2("./602/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5049] umount2("./612/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] newfstatat(AT_FDCWD, "./602/binderfs", [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12394] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] newfstatat(AT_FDCWD, "./612/cgroup.cpu", [pid 12394] <... futex resumed>) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./602/binderfs" [pid 12394] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5049] unlink("./612/cgroup.cpu") = 0 [pid 12394] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f504ff5f000 [pid 5046] umount2("./602/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12394] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5049] umount2("./612/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12394] <... mprotect resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] newfstatat(AT_FDCWD, "./602/cgroup", [pid 5049] newfstatat(AT_FDCWD, "./612/binderfs", [pid 12394] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] unlink("./602/cgroup" [pid 12394] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5049] unlink("./612/binderfs" [pid 5046] <... unlink resumed>) = 0 [pid 12394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5049] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 12397 attached [pid 12394] <... clone3 resumed> => {parent_tid=[1215]}, 88) = 1215 [pid 5046] umount2("./602/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12397] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12394] rt_sigprocmask(SIG_SETMASK, [], [pid 5049] umount2("./612/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12397] <... rseq resumed>) = 0 [pid 12394] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12397] set_robust_list(0x7f504ff7f9a0, 24 [pid 12394] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12397] <... set_robust_list resumed>) = 0 [pid 12394] <... futex resumed>) = 0 [pid 5046] newfstatat(AT_FDCWD, "./602/blkio.bfq.io_wait_time_recursive", [pid 12397] rt_sigprocmask(SIG_SETMASK, [], [pid 12394] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./612/cgroup", [pid 12397] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12397] open(".", O_RDONLY [pid 5049] unlink("./612/cgroup" [pid 5046] unlink("./602/blkio.bfq.io_wait_time_recursive" [pid 12397] <... open resumed>) = 3 [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... unlink resumed>) = 0 [pid 12397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5045] <... rmdir resumed>) = 0 [pid 12394] <... futex resumed>) = 0 [pid 12397] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 12395] <... symlink resumed>) = 0 [pid 12394] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] umount2("./612/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5045] mkdir("./593", 0777 [pid 12397] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12396] <... open resumed>) = 3 [pid 12394] <... futex resumed>) = 0 [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] umount2("./602/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12397] <... fcntl resumed>) = 0 [pid 12394] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] newfstatat(AT_FDCWD, "./612/blkio.bfq.io_wait_time_recursive", [pid 5046] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12396] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5049] <... newfstatat resumed>{st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5045] <... mkdir resumed>) = 0 [pid 12397] <... futex resumed>) = 0 [pid 12394] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./612/blkio.bfq.io_wait_time_recursive" [pid 5046] newfstatat(AT_FDCWD, "./602/cgroup.net", [pid 12397] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12394] <... futex resumed>) = 0 [pid 12395] symlink("/syzcgroup/net/syz4", "./cgroup.net" [pid 5049] <... unlink resumed>) = 0 [pid 5046] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12396] <... futex resumed>) = 1 [pid 12390] <... futex resumed>) = 0 [pid 5045] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12397] <... openat resumed>) = 4 [pid 12394] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12397] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 12390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12397] +++ killed by SIGIO +++ [pid 12396] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12395] <... symlink resumed>) = 0 [pid 5046] unlink("./602/cgroup.net" [pid 12396] <... fcntl resumed>) = 0 [pid 12395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12390] <... futex resumed>) = 0 [pid 5049] umount2("./612/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 12398 attached [pid 12396] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 12395] <... openat resumed>) = 3 [pid 12394] +++ killed by SIGIO +++ [pid 5049] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5046] <... unlink resumed>) = 0 [pid 12398] set_robust_list(0x555556ac56a0, 24 [pid 12395] write(3, "1000", 4 [pid 5049] newfstatat(AT_FDCWD, "./612/cgroup.net", [pid 5046] getdents64(3, [pid 12398] <... set_robust_list resumed>) = 0 [pid 12395] <... write resumed>) = 4 [pid 5047] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1214, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 5045] <... clone resumed>, child_tidptr=0x555556ac5690) = 1189 [pid 12395] close(3 [pid 5046] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 12395] <... close resumed>) = 0 [pid 5046] close(3 [pid 12395] symlink("/dev/binderfs", "./binderfs" [pid 12398] chdir("./593" [pid 12396] <... futex resumed>) = 0 [pid 12395] <... symlink resumed>) = 0 [pid 12390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5046] <... close resumed>) = 0 [pid 12398] <... chdir resumed>) = 0 [pid 12396] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12395] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] unlink("./612/cgroup.net" [pid 5046] rmdir("./602" [pid 12398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12395] <... futex resumed>) = 0 [pid 12390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5047] umount2("./606", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12395] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, [pid 12390] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... unlink resumed>) = 0 [pid 12396] <... futex resumed>) = 0 [pid 12395] <... rt_sigaction resumed>NULL, 8) = 0 [pid 12390] <... futex resumed>) = 1 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12396] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12395] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 12390] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] getdents64(3, [pid 5047] openat(AT_FDCWD, "./606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 12398] <... prctl resumed>) = 0 [pid 12396] <... openat resumed>) = 4 [pid 12395] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5049] <... getdents64 resumed>0x555556ac6730 /* 0 entries */, 32768) = 0 [pid 5046] <... rmdir resumed>) = 0 [pid 12395] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 12398] setpgid(0, 0 [pid 12395] <... mmap resumed>) = 0x7f504ff5f000 [pid 5049] close(3 [pid 12395] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5049] <... close resumed>) = 0 [pid 12398] <... setpgid resumed>) = 0 [pid 12395] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5049] rmdir("./612" [pid 5047] <... openat resumed>) = 3 [pid 5046] mkdir("./603", 0777 [pid 12395] <... rt_sigprocmask resumed>[], 8) = 0 [pid 12396] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12395] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0}./strace-static-x86_64: Process 12399 attached [pid 12390] <... futex resumed>) = ? [pid 5047] newfstatat(3, "", [pid 12399] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12396] +++ killed by SIGIO +++ [pid 12399] <... rseq resumed>) = 0 [pid 12399] set_robust_list(0x7f504ff7f9a0, 24 [pid 12398] symlink("/syzcgroup/unified/syz1", "./cgroup" [pid 12395] <... clone3 resumed> => {parent_tid=[1247]}, 88) = 1247 [pid 5049] <... rmdir resumed>) = 0 [pid 5047] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5046] <... mkdir resumed>) = 0 [pid 12399] <... set_robust_list resumed>) = 0 [pid 12399] rt_sigprocmask(SIG_SETMASK, [], [pid 12390] +++ killed by SIGIO +++ [pid 12395] rt_sigprocmask(SIG_SETMASK, [], [pid 12399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5047] getdents64(3, [pid 12395] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12399] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5049] mkdir("./613", 0777 [pid 5046] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 12399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12398] <... symlink resumed>) = 0 [pid 12395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12399] open(".", O_RDONLY [pid 12395] <... futex resumed>) = 0 [pid 5047] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5051] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1245, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 12399] <... open resumed>) = 3 [pid 12395] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] umount2("./621", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5051] openat(AT_FDCWD, "./621", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] umount2("./606/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 12399] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5049] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 12400 attached [pid 12399] <... futex resumed>) = 0 [pid 12395] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12398] symlink("/syzcgroup/cpu/syz1", "./cgroup.cpu" [pid 5051] <... openat resumed>) = 3 [pid 5049] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5047] newfstatat(AT_FDCWD, "./606/cgroup.cpu", [pid 12400] set_robust_list(0x555556ac56a0, 24 [pid 12399] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12398] <... symlink resumed>) = 0 [pid 12395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12400] <... set_robust_list resumed>) = 0 [pid 12399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12398] symlink("/syzcgroup/net/syz1", "./cgroup.net" [pid 12395] <... futex resumed>) = 0 [pid 5051] newfstatat(3, "", [pid 5047] unlink("./606/cgroup.cpu" [pid 5046] <... clone resumed>, child_tidptr=0x555556ac5690) = 1208 [pid 12399] fcntl(3, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_DELETE|DN_RENAME|DN_ATTRIB|DN_MULTISHOT [pid 12395] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 12400] chdir("./603" [pid 12399] <... fcntl resumed>) = 0 [pid 12398] <... symlink resumed>) = 0 [pid 5051] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5047] <... unlink resumed>) = 0 [pid 12400] <... chdir resumed>) = 0 [pid 12399] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 12395] <... futex resumed>) = 0 [pid 12399] futex(0x7f505004b408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 12395] futex(0x7f505004b408, FUTEX_WAKE_PRIVATE, 1000000 [pid 12400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 12395] <... futex resumed>) = 0 [pid 5051] getdents64(3, [pid 12400] <... prctl resumed>) = 0 [pid 12399] openat(AT_FDCWD, "blkio.bfq.io_wait_time_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 12398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12395] futex(0x7f505004b40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5051] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 5047] umount2("./606/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12400] setpgid(0, 0 [pid 12399] <... openat resumed>) = 4 [pid 12400] <... setpgid resumed>) = 0 [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 12401 attached [pid 12400] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5051] umount2("./621/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] newfstatat(AT_FDCWD, "./606/binderfs", [pid 12401] set_robust_list(0x555556ac56a0, 24 [pid 5049] <... clone resumed>, child_tidptr=0x555556ac5690) = 1228 [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12401] <... set_robust_list resumed>) = 0 [pid 12400] <... symlink resumed>) = 0 [pid 12399] --- SIGIO {si_signo=SIGIO, si_code=SI_KERNEL} --- [pid 12398] <... openat resumed>) = 3 [pid 12395] <... futex resumed>) = ? ERESTART_RESTARTBLOCK (Interrupted by signal) [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] unlink("./606/binderfs" [pid 12401] chdir("./613" [pid 5051] newfstatat(AT_FDCWD, "./621/cgroup.cpu", [pid 5047] <... unlink resumed>) = 0 [pid 12401] <... chdir resumed>) = 0 [pid 12400] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu" [pid 12398] write(3, "1000", 4 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 12398] <... write resumed>) = 4 [pid 5051] unlink("./621/cgroup.cpu" [pid 12401] <... prctl resumed>) = 0 [pid 12400] <... symlink resumed>) = 0 [pid 12398] close(3 [pid 5051] <... unlink resumed>) = 0 [pid 5047] umount2("./606/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12401] setpgid(0, 0 [pid 12399] +++ killed by SIGIO +++ [pid 12395] +++ killed by SIGIO +++ [pid 12400] symlink("/syzcgroup/net/syz0", "./cgroup.net" [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] umount2("./621/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12401] <... setpgid resumed>) = 0 [pid 12398] <... close resumed>) = 0 [pid 5050] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1246, si_uid=0, si_status=SIGIO, si_utime=0, si_stime=0} --- [pid 12401] symlink("/syzcgroup/unified/syz3", "./cgroup" [pid 12398] symlink("/dev/binderfs", "./binderfs" [pid 12400] <... symlink resumed>) = 0 [pid 12398] <... symlink resumed>) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] newfstatat(AT_FDCWD, "./606/cgroup", [pid 5051] newfstatat(AT_FDCWD, "./621/binderfs", [pid 5050] umount2("./621", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5050] openat(AT_FDCWD, "./621", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5047] unlink("./606/cgroup" [pid 12400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 12401] <... symlink resumed>) = 0 [pid 12398] futex(0x7f505004b40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5051] unlink("./621/binderfs" [pid 5050] <... openat resumed>) = 3 [pid 12398] <... futex resumed>) = 0 [pid 12398] rt_sigaction(SIGRT_1, {sa_handler=0x7f504fff2420, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f504ffe3d30}, NULL, 8) = 0 [pid 12398] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 5050] newfstatat(3, "", [pid 5051] <... unlink resumed>) = 0 [pid 12398] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 12398] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 12398] <... mmap resumed>) = 0x7f504ff5f000 [pid 5047] <... unlink resumed>) = 0 [pid 12398] mprotect(0x7f504ff60000, 131072, PROT_READ|PROT_WRITE [pid 5050] getdents64(3, [pid 12401] symlink("/syzcgroup/cpu/syz3", "./cgroup.cpu" [pid 12400] <... openat resumed>) = 3 [pid 12398] <... mprotect resumed>) = 0 [pid 5051] umount2("./621/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5047] umount2("./606/blkio.bfq.io_wait_time_recursive", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5050] <... getdents64 resumed>0x555556ac6730 /* 7 entries */, 32768) = 232 [pid 12398] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5050] umount2("./621/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 12401] <... symlink resumed>) = 0 [pid 12400] write(3, "1000", 4 [pid 12398] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5051] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5050] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5047] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 12401] symlink("/syzcgroup/net/syz3", "./cgroup.net" [pid 12400] <... write resumed>) = 4 [pid 12398] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f504ff7f990, parent_tid=0x7f504ff7f990, exit_signal=0, stack=0x7f504ff5f000, stack_size=0x20300, tls=0x7f504ff7f6c0} [pid 5051] newfstatat(AT_FDCWD, "./621/cgroup", [pid 5050] newfstatat(AT_FDCWD, "./621/cgroup.cpu", ./strace-static-x86_64: Process 12402 attached [pid 12400] close(3 [pid 5051] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5047] newfstatat(AT_FDCWD, "./606/blkio.bfq.io_wait_time_recursive", [pid 12401] <... symlink resumed>) = 0 [pid 12402] rseq(0x7f504ff7ffe0, 0x20, 0, 0x53053053 [pid 12400] <... close resumed>) = 0 [pid 5050] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 12402] <... rseq resumed>) = 0