./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor7322506 <...> Warning: Permanently added '10.128.1.95' (ED25519) to the list of known hosts. execve("./syz-executor7322506", ["./syz-executor7322506"], 0x7ffcb6e5d490 /* 10 vars */) = 0 brk(NULL) = 0x555555a8a000 brk(0x555555a8ad00) = 0x555555a8ad00 arch_prctl(ARCH_SET_FS, 0x555555a8a380) = 0 set_tid_address(0x555555a8a650) = 5063 set_robust_list(0x555555a8a660, 24) = 0 rseq(0x555555a8aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor7322506", 4096) = 25 getrandom("\x40\x86\x9b\x9a\x38\x86\x17\x67", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a8ad00 brk(0x555555aabd00) = 0x555555aabd00 brk(0x555555aac000) = 0x555555aac000 mprotect(0x7f99147ea000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("/syzcgroup", 0777) = 0 mkdir("/syzcgroup/unified", 0777) = 0 mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL) = 0 chmod("/syzcgroup/unified", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/unified/cgroup.subtree_control", O_WRONLY) = 3 write(3, "+cpu", 4) = 4 write(3, "+io", 3) = 3 write(3, "+pids", 5) = 5 close(3) = 0 mkdir("/syzcgroup/net", 0777) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "devices") = 0 [ 94.028874][ T5063] cgroup: Unknown subsys name 'net' umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "blkio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "freezer") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = 0 chmod("/syzcgroup/net", 0777) = 0 mkdir("/syzcgroup/cpu", 0777) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "hugetlb") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "rlimit") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/cpu", "cgroup", 0, "memory") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) [ 94.230513][ T5063] cgroup: Unknown subsys name 'rlimit' mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = 0 chmod("/syzcgroup/cpu", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cgroup.clone_children", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cpuset.memory_pressure_enabled", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 mkdir("./syzkaller.l3qodX", 0700) = 0 chmod("./syzkaller.l3qodX", 0777) = 0 chdir("./syzkaller.l3qodX") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5064 attached , child_tidptr=0x555555a8a650) = 5064 [pid 5064] set_robust_list(0x555555a8a660, 24) = 0 [pid 5064] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] setsid() = 1 [pid 5064] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5064] unshare(CLONE_NEWNS) = 0 [pid 5064] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5064] unshare(CLONE_NEWIPC) = 0 [pid 5064] unshare(CLONE_NEWCGROUP) = 0 [pid 5064] unshare(CLONE_NEWUTS) = 0 [pid 5064] unshare(CLONE_SYSVSEM) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "16777216", 8) = 8 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "536870912", 9) = 9 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "8192", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5064] close(3) = 0 [pid 5064] getpid() = 1 [pid 5064] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5064] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./0/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./0/cgroup.cpu", [pid 5068] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5068] <... exit resumed>) = ? [pid 5064] unlink("./0/cgroup.cpu" [pid 5068] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./0/binderfs") = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./0/file0") = 0 [pid 5064] umount2("./0/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./0/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./0/cgroup") = 0 [pid 5064] umount2("./0/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./0/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./0/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./0") = 0 [pid 5064] mkdir("./1", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5069 attached , child_tidptr=0x555555a8a650) = 4 [pid 5069] set_robust_list(0x555555a8a660, 24) = 0 [pid 5069] chdir("./1") = 0 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5069] setpgid(0, 0) = 0 [pid 5069] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5069] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5069] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] write(3, "1000", 4) = 4 [pid 5069] close(3) = 0 [pid 5069] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5069] mkdir("./file0", 000) = 0 [pid 5069] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5069] open("./file0", O_RDONLY) = 3 [pid 5069] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5069] write(4, "-pids ", 6) = 6 [pid 5069] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5069] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5070 attached ) = 5 [pid 5069] ptrace(PTRACE_ATTACH, 5) = -1 EPERM (Operation not permitted) [pid 5069] close(3) = 0 [pid 5069] close(4) = 0 [pid 5069] close(5) = -1 EBADF (Bad file descriptor) [pid 5069] close(6) = -1 EBADF (Bad file descriptor) [pid 5069] close(7) = -1 EBADF (Bad file descriptor) [pid 5069] close(8) = -1 EBADF (Bad file descriptor) [pid 5069] close(9) = -1 EBADF (Bad file descriptor) [pid 5069] close(10) = -1 EBADF (Bad file descriptor) [pid 5069] close(11) = -1 EBADF (Bad file descriptor) [pid 5069] close(12) = -1 EBADF (Bad file descriptor) [pid 5069] close(13) = -1 EBADF (Bad file descriptor) [pid 5069] close(14) = -1 EBADF (Bad file descriptor) [pid 5069] close(15) = -1 EBADF (Bad file descriptor) [pid 5069] close(16) = -1 EBADF (Bad file descriptor) [pid 5069] close(17) = -1 EBADF (Bad file descriptor) [pid 5069] close(18) = -1 EBADF (Bad file descriptor) [pid 5069] close(19) = -1 EBADF (Bad file descriptor) [pid 5069] close(20) = -1 EBADF (Bad file descriptor) [pid 5069] close(21) = -1 EBADF (Bad file descriptor) [pid 5069] close(22) = -1 EBADF (Bad file descriptor) [pid 5069] close(23) = -1 EBADF (Bad file descriptor) [pid 5069] close(24) = -1 EBADF (Bad file descriptor) [pid 5069] close(25) = -1 EBADF (Bad file descriptor) [pid 5069] close(26) = -1 EBADF (Bad file descriptor) [pid 5069] close(27) = -1 EBADF (Bad file descriptor) [pid 5069] close(28) = -1 EBADF (Bad file descriptor) [pid 5069] close(29) = -1 EBADF (Bad file descriptor) [pid 5069] exit_group(0) = ? [pid 5069] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./1/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./1/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./1/cgroup.cpu") = 0 [pid 5064] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5070] exit(0) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./1/binderfs" [pid 5070] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./1/file0") = 0 [pid 5064] umount2("./1/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./1/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./1/cgroup") = 0 [pid 5064] umount2("./1/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./1/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./1/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./1") = 0 [pid 5064] mkdir("./2", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5071 attached , child_tidptr=0x555555a8a650) = 6 [pid 5071] set_robust_list(0x555555a8a660, 24) = 0 [pid 5071] chdir("./2") = 0 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setpgid(0, 0) = 0 [pid 5071] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5071] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5071] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1000", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5071] mkdir("./file0", 000) = 0 [pid 5071] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5071] open("./file0", O_RDONLY) = 3 [pid 5071] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5071] write(4, "-pids ", 6) = 6 [pid 5071] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5071] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5072 attached ) = 7 [pid 5071] ptrace(PTRACE_ATTACH, 7) = -1 EPERM (Operation not permitted) [pid 5071] close(3) = 0 [pid 5071] close(4) = 0 [pid 5071] close(5) = -1 EBADF (Bad file descriptor) [pid 5071] close(6) = -1 EBADF (Bad file descriptor) [pid 5071] close(7) = -1 EBADF (Bad file descriptor) [pid 5071] close(8) = -1 EBADF (Bad file descriptor) [pid 5071] close(9) = -1 EBADF (Bad file descriptor) [pid 5071] close(10) = -1 EBADF (Bad file descriptor) [pid 5071] close(11) = -1 EBADF (Bad file descriptor) [pid 5071] close(12) = -1 EBADF (Bad file descriptor) [pid 5071] close(13) = -1 EBADF (Bad file descriptor) [pid 5071] close(14) = -1 EBADF (Bad file descriptor) [pid 5071] close(15) = -1 EBADF (Bad file descriptor) [pid 5071] close(16) = -1 EBADF (Bad file descriptor) [pid 5071] close(17) = -1 EBADF (Bad file descriptor) [pid 5071] close(18) = -1 EBADF (Bad file descriptor) [pid 5071] close(19) = -1 EBADF (Bad file descriptor) [pid 5071] close(20) = -1 EBADF (Bad file descriptor) [pid 5071] close(21) = -1 EBADF (Bad file descriptor) [pid 5071] close(22) = -1 EBADF (Bad file descriptor) [pid 5071] close(23) = -1 EBADF (Bad file descriptor) [pid 5071] close(24) = -1 EBADF (Bad file descriptor) [pid 5071] close(25) = -1 EBADF (Bad file descriptor) [pid 5071] close(26) = -1 EBADF (Bad file descriptor) [pid 5071] close(27) = -1 EBADF (Bad file descriptor) [pid 5071] close(28) = -1 EBADF (Bad file descriptor) [pid 5071] close(29) = -1 EBADF (Bad file descriptor) [pid 5071] exit_group(0) = ? [pid 5071] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./2/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./2/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./2/cgroup.cpu" [pid 5072] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5072] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./2/binderfs") = 0 [pid 5064] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./2/file0") = 0 [pid 5064] umount2("./2/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./2/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./2/cgroup") = 0 [pid 5064] umount2("./2/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./2/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./2/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./2") = 0 [pid 5064] mkdir("./3", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5073 attached , child_tidptr=0x555555a8a650) = 8 [pid 5073] set_robust_list(0x555555a8a660, 24) = 0 [pid 5073] chdir("./3") = 0 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setpgid(0, 0) = 0 [pid 5073] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5073] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5073] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1000", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5073] mkdir("./file0", 000) = 0 [pid 5073] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5073] open("./file0", O_RDONLY) = 3 [pid 5073] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5073] write(4, "-pids ", 6) = 6 [pid 5073] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5073] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5074 attached ) = 9 [pid 5073] ptrace(PTRACE_ATTACH, 9) = -1 EPERM (Operation not permitted) [pid 5073] close(3) = 0 [pid 5073] close(4) = 0 [pid 5073] close(5) = -1 EBADF (Bad file descriptor) [pid 5073] close(6) = -1 EBADF (Bad file descriptor) [pid 5073] close(7) = -1 EBADF (Bad file descriptor) [pid 5073] close(8) = -1 EBADF (Bad file descriptor) [pid 5073] close(9) = -1 EBADF (Bad file descriptor) [pid 5073] close(10) = -1 EBADF (Bad file descriptor) [pid 5073] close(11) = -1 EBADF (Bad file descriptor) [pid 5073] close(12) = -1 EBADF (Bad file descriptor) [pid 5073] close(13) = -1 EBADF (Bad file descriptor) [pid 5073] close(14) = -1 EBADF (Bad file descriptor) [pid 5073] close(15) = -1 EBADF (Bad file descriptor) [pid 5073] close(16) = -1 EBADF (Bad file descriptor) [pid 5073] close(17) = -1 EBADF (Bad file descriptor) [pid 5073] close(18) = -1 EBADF (Bad file descriptor) [pid 5073] close(19) = -1 EBADF (Bad file descriptor) [pid 5073] close(20) = -1 EBADF (Bad file descriptor) [pid 5073] close(21) = -1 EBADF (Bad file descriptor) [pid 5073] close(22) = -1 EBADF (Bad file descriptor) [pid 5073] close(23) = -1 EBADF (Bad file descriptor) [pid 5073] close(24) = -1 EBADF (Bad file descriptor) [pid 5073] close(25) = -1 EBADF (Bad file descriptor) [pid 5073] close(26) = -1 EBADF (Bad file descriptor) [pid 5073] close(27) = -1 EBADF (Bad file descriptor) [pid 5073] close(28) = -1 EBADF (Bad file descriptor) [pid 5073] close(29) = -1 EBADF (Bad file descriptor) [pid 5073] exit_group(0) = ? [pid 5073] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./3/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./3/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./3/cgroup.cpu") = 0 [pid 5064] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] exit(0 [pid 5064] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5074] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./3/binderfs") = 0 [pid 5064] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5074] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=9, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./3/file0") = 0 [pid 5064] umount2("./3/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./3/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./3/cgroup") = 0 [pid 5064] umount2("./3/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./3/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./3/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./3") = 0 [pid 5064] mkdir("./4", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5075 attached , child_tidptr=0x555555a8a650) = 10 [pid 5075] set_robust_list(0x555555a8a660, 24) = 0 [pid 5075] chdir("./4") = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setpgid(0, 0) = 0 [pid 5075] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5075] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5075] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1000", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5075] mkdir("./file0", 000) = 0 [pid 5075] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5075] open("./file0", O_RDONLY) = 3 [pid 5075] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5075] write(4, "-pids ", 6) = 6 [pid 5075] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5075] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5076 attached ) = 11 [pid 5075] ptrace(PTRACE_ATTACH, 11) = -1 EPERM (Operation not permitted) [pid 5075] close(3) = 0 [pid 5075] close(4) = 0 [pid 5075] close(5) = -1 EBADF (Bad file descriptor) [pid 5075] close(6) = -1 EBADF (Bad file descriptor) [pid 5075] close(7) = -1 EBADF (Bad file descriptor) [pid 5075] close(8) = -1 EBADF (Bad file descriptor) [pid 5075] close(9) = -1 EBADF (Bad file descriptor) [pid 5075] close(10) = -1 EBADF (Bad file descriptor) [pid 5075] close(11) = -1 EBADF (Bad file descriptor) [pid 5075] close(12) = -1 EBADF (Bad file descriptor) [pid 5075] close(13) = -1 EBADF (Bad file descriptor) [pid 5075] close(14) = -1 EBADF (Bad file descriptor) [pid 5075] close(15) = -1 EBADF (Bad file descriptor) [pid 5075] close(16) = -1 EBADF (Bad file descriptor) [pid 5075] close(17) = -1 EBADF (Bad file descriptor) [pid 5075] close(18) = -1 EBADF (Bad file descriptor) [pid 5075] close(19) = -1 EBADF (Bad file descriptor) [pid 5075] close(20) = -1 EBADF (Bad file descriptor) [pid 5075] close(21) = -1 EBADF (Bad file descriptor) [pid 5075] close(22) = -1 EBADF (Bad file descriptor) [pid 5075] close(23) = -1 EBADF (Bad file descriptor) [pid 5075] close(24) = -1 EBADF (Bad file descriptor) [pid 5075] close(25) = -1 EBADF (Bad file descriptor) [pid 5075] close(26) = -1 EBADF (Bad file descriptor) [pid 5075] close(27) = -1 EBADF (Bad file descriptor) [pid 5075] close(28) = -1 EBADF (Bad file descriptor) [pid 5075] close(29) = -1 EBADF (Bad file descriptor) [pid 5075] exit_group(0) = ? [pid 5075] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=10, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./4/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./4/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./4/cgroup.cpu" [pid 5076] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./4/binderfs") = 0 [pid 5064] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./4/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./4/file0") = 0 [pid 5064] umount2("./4/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./4/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./4/cgroup") = 0 [pid 5064] umount2("./4/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./4/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./4/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./4") = 0 [pid 5064] mkdir("./5", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 12 ./strace-static-x86_64: Process 5077 attached [pid 5077] set_robust_list(0x555555a8a660, 24) = 0 [pid 5077] chdir("./5") = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] setpgid(0, 0) = 0 [pid 5077] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5077] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5077] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5077] write(3, "1000", 4) = 4 [pid 5077] close(3) = 0 [pid 5077] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5077] mkdir("./file0", 000) = 0 [pid 5077] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5077] open("./file0", O_RDONLY) = 3 [pid 5077] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5077] write(4, "-pids ", 6) = 6 [pid 5077] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5077] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5078 attached ) = 13 [pid 5077] ptrace(PTRACE_ATTACH, 13) = -1 EPERM (Operation not permitted) [pid 5077] close(3) = 0 [pid 5077] close(4) = 0 [pid 5077] close(5) = -1 EBADF (Bad file descriptor) [pid 5077] close(6) = -1 EBADF (Bad file descriptor) [pid 5077] close(7) = -1 EBADF (Bad file descriptor) [pid 5077] close(8) = -1 EBADF (Bad file descriptor) [pid 5077] close(9) = -1 EBADF (Bad file descriptor) [pid 5077] close(10) = -1 EBADF (Bad file descriptor) [pid 5077] close(11) = -1 EBADF (Bad file descriptor) [pid 5077] close(12) = -1 EBADF (Bad file descriptor) [pid 5077] close(13) = -1 EBADF (Bad file descriptor) [pid 5077] close(14) = -1 EBADF (Bad file descriptor) [pid 5077] close(15) = -1 EBADF (Bad file descriptor) [pid 5077] close(16) = -1 EBADF (Bad file descriptor) [pid 5077] close(17) = -1 EBADF (Bad file descriptor) [pid 5077] close(18) = -1 EBADF (Bad file descriptor) [pid 5077] close(19) = -1 EBADF (Bad file descriptor) [pid 5077] close(20) = -1 EBADF (Bad file descriptor) [pid 5077] close(21) = -1 EBADF (Bad file descriptor) [pid 5077] close(22) = -1 EBADF (Bad file descriptor) [pid 5077] close(23) = -1 EBADF (Bad file descriptor) [pid 5077] close(24) = -1 EBADF (Bad file descriptor) [pid 5077] close(25) = -1 EBADF (Bad file descriptor) [pid 5077] close(26) = -1 EBADF (Bad file descriptor) [pid 5077] close(27) = -1 EBADF (Bad file descriptor) [pid 5077] close(28) = -1 EBADF (Bad file descriptor) [pid 5077] close(29) = -1 EBADF (Bad file descriptor) [pid 5077] exit_group(0) = ? [pid 5077] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [ 97.621512][ T54] cfg80211: failed to load regulatory.db [pid 5064] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5078] exit(0) = ? [pid 5064] umount2("./5/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./5/cgroup.cpu", [pid 5078] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./5/cgroup.cpu") = 0 [pid 5064] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./5/binderfs") = 0 [pid 5064] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./5/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./5/file0") = 0 [pid 5064] umount2("./5/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./5/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./5/cgroup") = 0 [pid 5064] umount2("./5/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./5/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./5/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./5") = 0 [pid 5064] mkdir("./6", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5079 attached , child_tidptr=0x555555a8a650) = 14 [pid 5079] set_robust_list(0x555555a8a660, 24) = 0 [pid 5079] chdir("./6") = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setpgid(0, 0) = 0 [pid 5079] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5079] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5079] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1000", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5079] mkdir("./file0", 000) = 0 [pid 5079] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5079] open("./file0", O_RDONLY) = 3 [pid 5079] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5079] write(4, "-pids ", 6) = 6 [pid 5079] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5079] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5080 attached ) = 15 [pid 5079] ptrace(PTRACE_ATTACH, 15) = -1 EPERM (Operation not permitted) [pid 5079] close(3) = 0 [pid 5079] close(4) = 0 [pid 5079] close(5) = -1 EBADF (Bad file descriptor) [pid 5079] close(6) = -1 EBADF (Bad file descriptor) [pid 5079] close(7) = -1 EBADF (Bad file descriptor) [pid 5079] close(8) = -1 EBADF (Bad file descriptor) [pid 5079] close(9) = -1 EBADF (Bad file descriptor) [pid 5079] close(10) = -1 EBADF (Bad file descriptor) [pid 5079] close(11) = -1 EBADF (Bad file descriptor) [pid 5079] close(12) = -1 EBADF (Bad file descriptor) [pid 5079] close(13) = -1 EBADF (Bad file descriptor) [pid 5079] close(14) = -1 EBADF (Bad file descriptor) [pid 5079] close(15) = -1 EBADF (Bad file descriptor) [pid 5079] close(16) = -1 EBADF (Bad file descriptor) [pid 5079] close(17) = -1 EBADF (Bad file descriptor) [pid 5079] close(18) = -1 EBADF (Bad file descriptor) [pid 5079] close(19) = -1 EBADF (Bad file descriptor) [pid 5079] close(20) = -1 EBADF (Bad file descriptor) [pid 5079] close(21) = -1 EBADF (Bad file descriptor) [pid 5079] close(22) = -1 EBADF (Bad file descriptor) [pid 5079] close(23) = -1 EBADF (Bad file descriptor) [pid 5079] close(24) = -1 EBADF (Bad file descriptor) [pid 5079] close(25) = -1 EBADF (Bad file descriptor) [pid 5079] close(26) = -1 EBADF (Bad file descriptor) [pid 5079] close(27) = -1 EBADF (Bad file descriptor) [pid 5079] close(28) = -1 EBADF (Bad file descriptor) [pid 5079] close(29) = -1 EBADF (Bad file descriptor) [pid 5079] exit_group(0) = ? [pid 5079] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./6/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5080] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5080] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./6/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./6/cgroup.cpu" [pid 5080] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./6/binderfs") = 0 [pid 5064] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./6/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./6/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./6/file0") = 0 [pid 5064] umount2("./6/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./6/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./6/cgroup") = 0 [pid 5064] umount2("./6/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./6/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./6/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./6") = 0 [pid 5064] mkdir("./7", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached , child_tidptr=0x555555a8a650) = 16 [pid 5081] set_robust_list(0x555555a8a660, 24) = 0 [pid 5081] chdir("./7") = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 0 [pid 5081] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5081] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5081] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1000", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5081] mkdir("./file0", 000) = 0 [pid 5081] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5081] open("./file0", O_RDONLY) = 3 [pid 5081] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5081] write(4, "-pids ", 6) = 6 [pid 5081] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5081] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5082 attached ) = 17 [pid 5081] ptrace(PTRACE_ATTACH, 17) = -1 EPERM (Operation not permitted) [pid 5081] close(3) = 0 [pid 5081] close(4) = 0 [pid 5081] close(5) = -1 EBADF (Bad file descriptor) [pid 5081] close(6) = -1 EBADF (Bad file descriptor) [pid 5081] close(7) = -1 EBADF (Bad file descriptor) [pid 5081] close(8) = -1 EBADF (Bad file descriptor) [pid 5081] close(9) = -1 EBADF (Bad file descriptor) [pid 5081] close(10) = -1 EBADF (Bad file descriptor) [pid 5081] close(11) = -1 EBADF (Bad file descriptor) [pid 5081] close(12) = -1 EBADF (Bad file descriptor) [pid 5081] close(13) = -1 EBADF (Bad file descriptor) [pid 5081] close(14) = -1 EBADF (Bad file descriptor) [pid 5081] close(15) = -1 EBADF (Bad file descriptor) [pid 5081] close(16) = -1 EBADF (Bad file descriptor) [pid 5081] close(17) = -1 EBADF (Bad file descriptor) [pid 5081] close(18) = -1 EBADF (Bad file descriptor) [pid 5081] close(19) = -1 EBADF (Bad file descriptor) [pid 5081] close(20) = -1 EBADF (Bad file descriptor) [pid 5081] close(21) = -1 EBADF (Bad file descriptor) [pid 5081] close(22) = -1 EBADF (Bad file descriptor) [pid 5081] close(23) = -1 EBADF (Bad file descriptor) [pid 5081] close(24) = -1 EBADF (Bad file descriptor) [pid 5081] close(25) = -1 EBADF (Bad file descriptor) [pid 5081] close(26) = -1 EBADF (Bad file descriptor) [pid 5081] close(27) = -1 EBADF (Bad file descriptor) [pid 5081] close(28) = -1 EBADF (Bad file descriptor) [pid 5081] close(29) = -1 EBADF (Bad file descriptor) [pid 5081] exit_group(0) = ? [pid 5081] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5082] exit(0) = ? [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./7/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./7/cgroup.cpu", [pid 5082] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./7/cgroup.cpu") = 0 [pid 5064] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./7/binderfs") = 0 [pid 5064] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./7/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./7/file0") = 0 [pid 5064] umount2("./7/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./7/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./7/cgroup") = 0 [pid 5064] umount2("./7/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./7/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./7/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./7") = 0 [pid 5064] mkdir("./8", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x555555a8a660, 24) = 0 [pid 5083] chdir("./8" [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 18 [pid 5083] <... chdir resumed>) = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setpgid(0, 0) = 0 [pid 5083] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5083] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5083] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5083] mkdir("./file0", 000) = 0 [pid 5083] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5083] open("./file0", O_RDONLY) = 3 [pid 5083] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5083] write(4, "-pids ", 6) = 6 [pid 5083] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5083] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5084 attached ) = 19 [pid 5083] ptrace(PTRACE_ATTACH, 19) = -1 EPERM (Operation not permitted) [pid 5083] close(3) = 0 [pid 5083] close(4) = 0 [pid 5083] close(5) = -1 EBADF (Bad file descriptor) [pid 5083] close(6) = -1 EBADF (Bad file descriptor) [pid 5083] close(7) = -1 EBADF (Bad file descriptor) [pid 5083] close(8) = -1 EBADF (Bad file descriptor) [pid 5083] close(9) = -1 EBADF (Bad file descriptor) [pid 5083] close(10) = -1 EBADF (Bad file descriptor) [pid 5083] close(11) = -1 EBADF (Bad file descriptor) [pid 5083] close(12) = -1 EBADF (Bad file descriptor) [pid 5083] close(13) = -1 EBADF (Bad file descriptor) [pid 5083] close(14) = -1 EBADF (Bad file descriptor) [pid 5083] close(15) = -1 EBADF (Bad file descriptor) [pid 5083] close(16) = -1 EBADF (Bad file descriptor) [pid 5083] close(17) = -1 EBADF (Bad file descriptor) [pid 5083] close(18) = -1 EBADF (Bad file descriptor) [pid 5083] close(19) = -1 EBADF (Bad file descriptor) [pid 5083] close(20) = -1 EBADF (Bad file descriptor) [pid 5083] close(21) = -1 EBADF (Bad file descriptor) [pid 5083] close(22) = -1 EBADF (Bad file descriptor) [pid 5083] close(23) = -1 EBADF (Bad file descriptor) [pid 5083] close(24) = -1 EBADF (Bad file descriptor) [pid 5083] close(25) = -1 EBADF (Bad file descriptor) [pid 5083] close(26) = -1 EBADF (Bad file descriptor) [pid 5083] close(27) = -1 EBADF (Bad file descriptor) [pid 5083] close(28) = -1 EBADF (Bad file descriptor) [pid 5083] close(29) = -1 EBADF (Bad file descriptor) [pid 5083] exit_group(0) = ? [pid 5083] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./8/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./8/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./8/cgroup.cpu") = 0 [pid 5064] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./8/binderfs") = 0 [pid 5064] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./8/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./8/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5084] exit(0 [pid 5064] <... openat resumed>) = 4 [pid 5084] <... exit resumed>) = ? [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5084] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] close(4) = 0 [pid 5064] rmdir("./8/file0") = 0 [pid 5064] umount2("./8/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./8/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./8/cgroup") = 0 [pid 5064] umount2("./8/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./8/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./8/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./8") = 0 [pid 5064] mkdir("./9", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5085 attached , child_tidptr=0x555555a8a650) = 20 [pid 5085] set_robust_list(0x555555a8a660, 24) = 0 [pid 5085] chdir("./9") = 0 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5085] setpgid(0, 0) = 0 [pid 5085] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5085] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5085] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3) = 0 [pid 5085] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5085] mkdir("./file0", 000) = 0 [pid 5085] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5085] open("./file0", O_RDONLY) = 3 [pid 5085] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5085] write(4, "-pids ", 6) = 6 [pid 5085] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5085] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5086 attached ) = 21 [pid 5085] ptrace(PTRACE_ATTACH, 21) = -1 EPERM (Operation not permitted) [pid 5085] close(3) = 0 [pid 5085] close(4) = 0 [pid 5085] close(5) = -1 EBADF (Bad file descriptor) [pid 5085] close(6) = -1 EBADF (Bad file descriptor) [pid 5085] close(7) = -1 EBADF (Bad file descriptor) [pid 5085] close(8) = -1 EBADF (Bad file descriptor) [pid 5085] close(9) = -1 EBADF (Bad file descriptor) [pid 5085] close(10) = -1 EBADF (Bad file descriptor) [pid 5085] close(11) = -1 EBADF (Bad file descriptor) [pid 5085] close(12) = -1 EBADF (Bad file descriptor) [pid 5085] close(13) = -1 EBADF (Bad file descriptor) [pid 5085] close(14) = -1 EBADF (Bad file descriptor) [pid 5085] close(15) = -1 EBADF (Bad file descriptor) [pid 5085] close(16) = -1 EBADF (Bad file descriptor) [pid 5085] close(17) = -1 EBADF (Bad file descriptor) [pid 5085] close(18) = -1 EBADF (Bad file descriptor) [pid 5085] close(19) = -1 EBADF (Bad file descriptor) [pid 5085] close(20) = -1 EBADF (Bad file descriptor) [pid 5085] close(21) = -1 EBADF (Bad file descriptor) [pid 5085] close(22) = -1 EBADF (Bad file descriptor) [pid 5085] close(23) = -1 EBADF (Bad file descriptor) [pid 5085] close(24) = -1 EBADF (Bad file descriptor) [pid 5085] close(25) = -1 EBADF (Bad file descriptor) [pid 5085] close(26) = -1 EBADF (Bad file descriptor) [pid 5085] close(27) = -1 EBADF (Bad file descriptor) [pid 5085] close(28) = -1 EBADF (Bad file descriptor) [pid 5085] close(29) = -1 EBADF (Bad file descriptor) [pid 5085] exit_group(0) = ? [pid 5085] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./9/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./9/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./9/cgroup.cpu") = 0 [pid 5064] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./9/binderfs", [pid 5086] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5086] <... exit resumed>) = ? [pid 5064] unlink("./9/binderfs") = 0 [pid 5064] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5086] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./9/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./9/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./9/file0") = 0 [pid 5064] umount2("./9/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./9/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./9/cgroup") = 0 [pid 5064] umount2("./9/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./9/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./9/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./9") = 0 [pid 5064] mkdir("./10", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached , child_tidptr=0x555555a8a650) = 22 [pid 5087] set_robust_list(0x555555a8a660, 24) = 0 [pid 5087] chdir("./10") = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5087] setpgid(0, 0) = 0 [pid 5087] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5087] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5087] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5087] mkdir("./file0", 000) = 0 [pid 5087] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5087] open("./file0", O_RDONLY) = 3 [pid 5087] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5087] write(4, "-pids ", 6) = 6 [pid 5087] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5087] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5088 attached ) = 23 [pid 5087] ptrace(PTRACE_ATTACH, 23) = -1 EPERM (Operation not permitted) [pid 5087] close(3) = 0 [pid 5087] close(4) = 0 [pid 5087] close(5) = -1 EBADF (Bad file descriptor) [pid 5087] close(6) = -1 EBADF (Bad file descriptor) [pid 5087] close(7) = -1 EBADF (Bad file descriptor) [pid 5087] close(8) = -1 EBADF (Bad file descriptor) [pid 5087] close(9) = -1 EBADF (Bad file descriptor) [pid 5087] close(10) = -1 EBADF (Bad file descriptor) [pid 5087] close(11) = -1 EBADF (Bad file descriptor) [pid 5087] close(12) = -1 EBADF (Bad file descriptor) [pid 5087] close(13) = -1 EBADF (Bad file descriptor) [pid 5087] close(14) = -1 EBADF (Bad file descriptor) [pid 5087] close(15) = -1 EBADF (Bad file descriptor) [pid 5087] close(16) = -1 EBADF (Bad file descriptor) [pid 5087] close(17) = -1 EBADF (Bad file descriptor) [pid 5087] close(18) = -1 EBADF (Bad file descriptor) [pid 5087] close(19) = -1 EBADF (Bad file descriptor) [pid 5087] close(20) = -1 EBADF (Bad file descriptor) [pid 5087] close(21) = -1 EBADF (Bad file descriptor) [pid 5087] close(22) = -1 EBADF (Bad file descriptor) [pid 5087] close(23) = -1 EBADF (Bad file descriptor) [pid 5087] close(24) = -1 EBADF (Bad file descriptor) [pid 5087] close(25) = -1 EBADF (Bad file descriptor) [pid 5087] close(26) = -1 EBADF (Bad file descriptor) [pid 5087] close(27) = -1 EBADF (Bad file descriptor) [pid 5087] close(28) = -1 EBADF (Bad file descriptor) [pid 5087] close(29) = -1 EBADF (Bad file descriptor) [pid 5087] exit_group(0) = ? [pid 5087] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./10/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./10/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./10/cgroup.cpu" [pid 5088] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5088] <... exit resumed>) = ? [pid 5064] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./10/binderfs") = 0 [pid 5064] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./10/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./10/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./10/file0") = 0 [pid 5064] umount2("./10/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./10/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./10/cgroup") = 0 [pid 5064] umount2("./10/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./10/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./10/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./10") = 0 [pid 5064] mkdir("./11", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 24 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5089] chdir("./11") = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5089] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5089] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] mkdir("./file0", 000) = 0 [pid 5089] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5089] open("./file0", O_RDONLY) = 3 [pid 5089] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5089] write(4, "-pids ", 6) = 6 [pid 5089] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5089] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5090 attached ) = 25 [pid 5089] ptrace(PTRACE_ATTACH, 25) = -1 EPERM (Operation not permitted) [pid 5089] close(3) = 0 [pid 5089] close(4) = 0 [pid 5089] close(5) = -1 EBADF (Bad file descriptor) [pid 5089] close(6) = -1 EBADF (Bad file descriptor) [pid 5089] close(7) = -1 EBADF (Bad file descriptor) [pid 5089] close(8) = -1 EBADF (Bad file descriptor) [pid 5089] close(9) = -1 EBADF (Bad file descriptor) [pid 5089] close(10) = -1 EBADF (Bad file descriptor) [pid 5089] close(11) = -1 EBADF (Bad file descriptor) [pid 5089] close(12) = -1 EBADF (Bad file descriptor) [pid 5089] close(13) = -1 EBADF (Bad file descriptor) [pid 5089] close(14) = -1 EBADF (Bad file descriptor) [pid 5089] close(15) = -1 EBADF (Bad file descriptor) [pid 5089] close(16) = -1 EBADF (Bad file descriptor) [pid 5089] close(17) = -1 EBADF (Bad file descriptor) [pid 5089] close(18) = -1 EBADF (Bad file descriptor) [pid 5089] close(19) = -1 EBADF (Bad file descriptor) [pid 5089] close(20) = -1 EBADF (Bad file descriptor) [pid 5089] close(21) = -1 EBADF (Bad file descriptor) [pid 5089] close(22) = -1 EBADF (Bad file descriptor) [pid 5089] close(23) = -1 EBADF (Bad file descriptor) [pid 5089] close(24) = -1 EBADF (Bad file descriptor) [pid 5089] close(25) = -1 EBADF (Bad file descriptor) [pid 5089] close(26) = -1 EBADF (Bad file descriptor) [pid 5089] close(27) = -1 EBADF (Bad file descriptor) [pid 5089] close(28) = -1 EBADF (Bad file descriptor) [pid 5089] close(29) = -1 EBADF (Bad file descriptor) [pid 5089] exit_group(0) = ? [pid 5089] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=24, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5090] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./11/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./11/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5090] +++ exited with 0 +++ [pid 5064] unlink("./11/cgroup.cpu") = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./11/binderfs") = 0 [pid 5064] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./11/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./11/file0") = 0 [pid 5064] umount2("./11/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./11/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./11/cgroup") = 0 [pid 5064] umount2("./11/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./11/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./11/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./11") = 0 [pid 5064] mkdir("./12", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5091 attached [pid 5091] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 26 [pid 5091] <... set_robust_list resumed>) = 0 [pid 5091] chdir("./12") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5091] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5091] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] mkdir("./file0", 000) = 0 [pid 5091] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5091] open("./file0", O_RDONLY) = 3 [pid 5091] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5091] write(4, "-pids ", 6) = 6 [pid 5091] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5091] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5093 attached ) = 27 [pid 5091] ptrace(PTRACE_ATTACH, 27) = -1 EPERM (Operation not permitted) [pid 5091] close(3) = 0 [pid 5091] close(4) = 0 [pid 5091] close(5) = -1 EBADF (Bad file descriptor) [pid 5091] close(6) = -1 EBADF (Bad file descriptor) [pid 5091] close(7) = -1 EBADF (Bad file descriptor) [pid 5091] close(8) = -1 EBADF (Bad file descriptor) [pid 5091] close(9) = -1 EBADF (Bad file descriptor) [pid 5091] close(10) = -1 EBADF (Bad file descriptor) [pid 5091] close(11) = -1 EBADF (Bad file descriptor) [pid 5091] close(12) = -1 EBADF (Bad file descriptor) [pid 5091] close(13) = -1 EBADF (Bad file descriptor) [pid 5091] close(14) = -1 EBADF (Bad file descriptor) [pid 5091] close(15) = -1 EBADF (Bad file descriptor) [pid 5091] close(16) = -1 EBADF (Bad file descriptor) [pid 5091] close(17) = -1 EBADF (Bad file descriptor) [pid 5091] close(18) = -1 EBADF (Bad file descriptor) [pid 5091] close(19) = -1 EBADF (Bad file descriptor) [pid 5091] close(20) = -1 EBADF (Bad file descriptor) [pid 5091] close(21) = -1 EBADF (Bad file descriptor) [pid 5091] close(22) = -1 EBADF (Bad file descriptor) [pid 5091] close(23) = -1 EBADF (Bad file descriptor) [pid 5091] close(24) = -1 EBADF (Bad file descriptor) [pid 5091] close(25) = -1 EBADF (Bad file descriptor) [pid 5091] close(26) = -1 EBADF (Bad file descriptor) [pid 5091] close(27) = -1 EBADF (Bad file descriptor) [pid 5091] close(28) = -1 EBADF (Bad file descriptor) [pid 5091] close(29) = -1 EBADF (Bad file descriptor) [pid 5091] exit_group(0) = ? [pid 5091] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./12/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5093] exit(0) = ? [pid 5064] newfstatat(AT_FDCWD, "./12/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./12/cgroup.cpu" [pid 5093] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./12/binderfs") = 0 [pid 5064] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./12/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./12/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./12/file0") = 0 [pid 5064] umount2("./12/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./12/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./12/cgroup") = 0 [pid 5064] umount2("./12/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./12/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./12/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./12") = 0 [pid 5064] mkdir("./13", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5094 attached , child_tidptr=0x555555a8a650) = 28 [pid 5094] set_robust_list(0x555555a8a660, 24) = 0 [pid 5094] chdir("./13") = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5094] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5094] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5094] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] mkdir("./file0", 000) = 0 [pid 5094] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5094] open("./file0", O_RDONLY) = 3 [pid 5094] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5094] write(4, "-pids ", 6) = 6 [pid 5094] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5094] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5095 attached ) = 29 [pid 5094] ptrace(PTRACE_ATTACH, 29) = -1 EPERM (Operation not permitted) [pid 5094] close(3) = 0 [pid 5094] close(4) = 0 [pid 5094] close(5) = -1 EBADF (Bad file descriptor) [pid 5094] close(6) = -1 EBADF (Bad file descriptor) [pid 5094] close(7) = -1 EBADF (Bad file descriptor) [pid 5094] close(8) = -1 EBADF (Bad file descriptor) [pid 5094] close(9) = -1 EBADF (Bad file descriptor) [pid 5094] close(10) = -1 EBADF (Bad file descriptor) [pid 5094] close(11) = -1 EBADF (Bad file descriptor) [pid 5094] close(12) = -1 EBADF (Bad file descriptor) [pid 5094] close(13) = -1 EBADF (Bad file descriptor) [pid 5094] close(14) = -1 EBADF (Bad file descriptor) [pid 5094] close(15) = -1 EBADF (Bad file descriptor) [pid 5094] close(16) = -1 EBADF (Bad file descriptor) [pid 5094] close(17) = -1 EBADF (Bad file descriptor) [pid 5094] close(18) = -1 EBADF (Bad file descriptor) [pid 5094] close(19) = -1 EBADF (Bad file descriptor) [pid 5094] close(20) = -1 EBADF (Bad file descriptor) [pid 5094] close(21) = -1 EBADF (Bad file descriptor) [pid 5094] close(22) = -1 EBADF (Bad file descriptor) [pid 5094] close(23) = -1 EBADF (Bad file descriptor) [pid 5094] close(24) = -1 EBADF (Bad file descriptor) [pid 5094] close(25) = -1 EBADF (Bad file descriptor) [pid 5094] close(26) = -1 EBADF (Bad file descriptor) [pid 5094] close(27) = -1 EBADF (Bad file descriptor) [pid 5094] close(28) = -1 EBADF (Bad file descriptor) [pid 5094] close(29) = -1 EBADF (Bad file descriptor) [pid 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=28, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./13/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./13/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./13/cgroup.cpu") = 0 [pid 5064] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./13/binderfs" [pid 5095] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5095] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./13/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./13/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./13/file0") = 0 [pid 5064] umount2("./13/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./13/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./13/cgroup") = 0 [pid 5064] umount2("./13/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./13/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./13/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./13") = 0 [pid 5064] mkdir("./14", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5096 attached , child_tidptr=0x555555a8a650) = 30 [pid 5096] set_robust_list(0x555555a8a660, 24) = 0 [pid 5096] chdir("./14") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5096] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5096] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] mkdir("./file0", 000) = 0 [pid 5096] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5096] open("./file0", O_RDONLY) = 3 [pid 5096] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5096] write(4, "-pids ", 6) = 6 [pid 5096] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5096] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5097 attached ) = 31 [pid 5096] ptrace(PTRACE_ATTACH, 31) = -1 EPERM (Operation not permitted) [pid 5096] close(3) = 0 [pid 5096] close(4) = 0 [pid 5096] close(5) = -1 EBADF (Bad file descriptor) [pid 5096] close(6) = -1 EBADF (Bad file descriptor) [pid 5096] close(7) = -1 EBADF (Bad file descriptor) [pid 5096] close(8) = -1 EBADF (Bad file descriptor) [pid 5096] close(9) = -1 EBADF (Bad file descriptor) [pid 5096] close(10) = -1 EBADF (Bad file descriptor) [pid 5096] close(11) = -1 EBADF (Bad file descriptor) [pid 5096] close(12) = -1 EBADF (Bad file descriptor) [pid 5096] close(13) = -1 EBADF (Bad file descriptor) [pid 5096] close(14) = -1 EBADF (Bad file descriptor) [pid 5096] close(15) = -1 EBADF (Bad file descriptor) [pid 5096] close(16) = -1 EBADF (Bad file descriptor) [pid 5096] close(17) = -1 EBADF (Bad file descriptor) [pid 5096] close(18) = -1 EBADF (Bad file descriptor) [pid 5096] close(19) = -1 EBADF (Bad file descriptor) [pid 5096] close(20) = -1 EBADF (Bad file descriptor) [pid 5096] close(21) = -1 EBADF (Bad file descriptor) [pid 5096] close(22) = -1 EBADF (Bad file descriptor) [pid 5096] close(23) = -1 EBADF (Bad file descriptor) [pid 5096] close(24) = -1 EBADF (Bad file descriptor) [pid 5096] close(25) = -1 EBADF (Bad file descriptor) [pid 5096] close(26) = -1 EBADF (Bad file descriptor) [pid 5096] close(27) = -1 EBADF (Bad file descriptor) [pid 5096] close(28) = -1 EBADF (Bad file descriptor) [pid 5096] close(29) = -1 EBADF (Bad file descriptor) [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./14/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./14/cgroup.cpu", [pid 5097] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5097] <... exit resumed>) = ? [pid 5064] unlink("./14/cgroup.cpu") = 0 [pid 5064] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5097] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=31, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./14/binderfs") = 0 [pid 5064] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./14/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./14/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./14/file0") = 0 [pid 5064] umount2("./14/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./14/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./14/cgroup") = 0 [pid 5064] umount2("./14/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./14/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./14/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./14") = 0 [pid 5064] mkdir("./15", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5098 attached , child_tidptr=0x555555a8a650) = 32 [pid 5098] set_robust_list(0x555555a8a660, 24) = 0 [pid 5098] chdir("./15") = 0 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5098] setpgid(0, 0) = 0 [pid 5098] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5098] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5098] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5098] mkdir("./file0", 000) = 0 [pid 5098] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5098] open("./file0", O_RDONLY) = 3 [pid 5098] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5098] write(4, "-pids ", 6) = 6 [pid 5098] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5098] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5099 attached ) = 33 [pid 5098] ptrace(PTRACE_ATTACH, 33) = -1 EPERM (Operation not permitted) [pid 5098] close(3) = 0 [pid 5098] close(4) = 0 [pid 5098] close(5) = -1 EBADF (Bad file descriptor) [pid 5098] close(6) = -1 EBADF (Bad file descriptor) [pid 5098] close(7) = -1 EBADF (Bad file descriptor) [pid 5098] close(8) = -1 EBADF (Bad file descriptor) [pid 5098] close(9) = -1 EBADF (Bad file descriptor) [pid 5098] close(10) = -1 EBADF (Bad file descriptor) [pid 5098] close(11) = -1 EBADF (Bad file descriptor) [pid 5098] close(12) = -1 EBADF (Bad file descriptor) [pid 5098] close(13) = -1 EBADF (Bad file descriptor) [pid 5098] close(14) = -1 EBADF (Bad file descriptor) [pid 5098] close(15) = -1 EBADF (Bad file descriptor) [pid 5098] close(16) = -1 EBADF (Bad file descriptor) [pid 5098] close(17) = -1 EBADF (Bad file descriptor) [pid 5098] close(18) = -1 EBADF (Bad file descriptor) [pid 5098] close(19) = -1 EBADF (Bad file descriptor) [pid 5098] close(20) = -1 EBADF (Bad file descriptor) [pid 5098] close(21) = -1 EBADF (Bad file descriptor) [pid 5098] close(22) = -1 EBADF (Bad file descriptor) [pid 5098] close(23) = -1 EBADF (Bad file descriptor) [pid 5098] close(24) = -1 EBADF (Bad file descriptor) [pid 5098] close(25) = -1 EBADF (Bad file descriptor) [pid 5098] close(26) = -1 EBADF (Bad file descriptor) [pid 5098] close(27) = -1 EBADF (Bad file descriptor) [pid 5098] close(28) = -1 EBADF (Bad file descriptor) [pid 5098] close(29) = -1 EBADF (Bad file descriptor) [pid 5098] exit_group(0) = ? [pid 5098] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./15/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./15/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./15/cgroup.cpu" [pid 5099] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5099] <... exit resumed>) = ? [pid 5064] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5099] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=33, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./15/binderfs") = 0 [pid 5064] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./15/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./15/file0") = 0 [pid 5064] umount2("./15/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./15/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./15/cgroup") = 0 [pid 5064] umount2("./15/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./15/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./15/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./15") = 0 [pid 5064] mkdir("./16", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5100 attached , child_tidptr=0x555555a8a650) = 34 [pid 5100] set_robust_list(0x555555a8a660, 24) = 0 [pid 5100] chdir("./16") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5100] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5100] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] mkdir("./file0", 000) = 0 [pid 5100] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5100] open("./file0", O_RDONLY) = 3 [pid 5100] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5100] write(4, "-pids ", 6) = 6 [pid 5100] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5100] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5101 attached ) = 35 [pid 5100] ptrace(PTRACE_ATTACH, 35) = -1 EPERM (Operation not permitted) [pid 5100] close(3) = 0 [pid 5100] close(4) = 0 [pid 5100] close(5) = -1 EBADF (Bad file descriptor) [pid 5100] close(6) = -1 EBADF (Bad file descriptor) [pid 5100] close(7) = -1 EBADF (Bad file descriptor) [pid 5100] close(8) = -1 EBADF (Bad file descriptor) [pid 5100] close(9) = -1 EBADF (Bad file descriptor) [pid 5100] close(10) = -1 EBADF (Bad file descriptor) [pid 5100] close(11) = -1 EBADF (Bad file descriptor) [pid 5100] close(12) = -1 EBADF (Bad file descriptor) [pid 5100] close(13) = -1 EBADF (Bad file descriptor) [pid 5100] close(14) = -1 EBADF (Bad file descriptor) [pid 5100] close(15) = -1 EBADF (Bad file descriptor) [pid 5100] close(16) = -1 EBADF (Bad file descriptor) [pid 5100] close(17) = -1 EBADF (Bad file descriptor) [pid 5100] close(18) = -1 EBADF (Bad file descriptor) [pid 5100] close(19) = -1 EBADF (Bad file descriptor) [pid 5100] close(20) = -1 EBADF (Bad file descriptor) [pid 5100] close(21) = -1 EBADF (Bad file descriptor) [pid 5100] close(22) = -1 EBADF (Bad file descriptor) [pid 5100] close(23) = -1 EBADF (Bad file descriptor) [pid 5100] close(24) = -1 EBADF (Bad file descriptor) [pid 5100] close(25) = -1 EBADF (Bad file descriptor) [pid 5100] close(26) = -1 EBADF (Bad file descriptor) [pid 5100] close(27) = -1 EBADF (Bad file descriptor) [pid 5100] close(28) = -1 EBADF (Bad file descriptor) [pid 5100] close(29) = -1 EBADF (Bad file descriptor) [pid 5100] exit_group(0) = ? [pid 5100] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=34, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./16/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5101] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5101] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./16/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./16/cgroup.cpu" [pid 5101] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=35, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./16/binderfs") = 0 [pid 5064] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./16/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./16/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./16/file0") = 0 [pid 5064] umount2("./16/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./16/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./16/cgroup") = 0 [pid 5064] umount2("./16/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./16/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./16/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./16") = 0 [pid 5064] mkdir("./17", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached , child_tidptr=0x555555a8a650) = 36 [pid 5102] set_robust_list(0x555555a8a660, 24) = 0 [pid 5102] chdir("./17") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5102] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5102] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] mkdir("./file0", 000) = 0 [pid 5102] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5102] open("./file0", O_RDONLY) = 3 [pid 5102] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5102] write(4, "-pids ", 6) = 6 [pid 5102] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5102] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5103 attached ) = 37 [pid 5102] ptrace(PTRACE_ATTACH, 37) = -1 EPERM (Operation not permitted) [pid 5102] close(3) = 0 [pid 5102] close(4) = 0 [pid 5102] close(5) = -1 EBADF (Bad file descriptor) [pid 5102] close(6) = -1 EBADF (Bad file descriptor) [pid 5102] close(7) = -1 EBADF (Bad file descriptor) [pid 5102] close(8) = -1 EBADF (Bad file descriptor) [pid 5102] close(9) = -1 EBADF (Bad file descriptor) [pid 5102] close(10) = -1 EBADF (Bad file descriptor) [pid 5102] close(11) = -1 EBADF (Bad file descriptor) [pid 5102] close(12) = -1 EBADF (Bad file descriptor) [pid 5102] close(13) = -1 EBADF (Bad file descriptor) [pid 5102] close(14) = -1 EBADF (Bad file descriptor) [pid 5102] close(15) = -1 EBADF (Bad file descriptor) [pid 5102] close(16) = -1 EBADF (Bad file descriptor) [pid 5102] close(17) = -1 EBADF (Bad file descriptor) [pid 5102] close(18) = -1 EBADF (Bad file descriptor) [pid 5102] close(19) = -1 EBADF (Bad file descriptor) [pid 5102] close(20) = -1 EBADF (Bad file descriptor) [pid 5102] close(21) = -1 EBADF (Bad file descriptor) [pid 5102] close(22) = -1 EBADF (Bad file descriptor) [pid 5102] close(23) = -1 EBADF (Bad file descriptor) [pid 5102] close(24) = -1 EBADF (Bad file descriptor) [pid 5102] close(25) = -1 EBADF (Bad file descriptor) [pid 5102] close(26) = -1 EBADF (Bad file descriptor) [pid 5102] close(27) = -1 EBADF (Bad file descriptor) [pid 5102] close(28) = -1 EBADF (Bad file descriptor) [pid 5102] close(29) = -1 EBADF (Bad file descriptor) [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=36, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5103] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./17/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5103] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./17/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./17/cgroup.cpu") = 0 [pid 5064] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5103] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=37, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./17/binderfs") = 0 [pid 5064] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./17/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./17/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./17/file0") = 0 [pid 5064] umount2("./17/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./17/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./17/cgroup") = 0 [pid 5064] umount2("./17/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./17/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./17/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./17") = 0 [pid 5064] mkdir("./18", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5104 attached , child_tidptr=0x555555a8a650) = 38 [pid 5104] set_robust_list(0x555555a8a660, 24) = 0 [pid 5104] chdir("./18") = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5104] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5104] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] mkdir("./file0", 000) = 0 [pid 5104] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5104] open("./file0", O_RDONLY) = 3 [pid 5104] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5104] write(4, "-pids ", 6) = 6 [pid 5104] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5104] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5105 attached ) = 39 [pid 5104] ptrace(PTRACE_ATTACH, 39) = -1 EPERM (Operation not permitted) [pid 5104] close(3) = 0 [pid 5104] close(4) = 0 [pid 5104] close(5) = -1 EBADF (Bad file descriptor) [pid 5104] close(6) = -1 EBADF (Bad file descriptor) [pid 5104] close(7) = -1 EBADF (Bad file descriptor) [pid 5104] close(8) = -1 EBADF (Bad file descriptor) [pid 5104] close(9) = -1 EBADF (Bad file descriptor) [pid 5104] close(10) = -1 EBADF (Bad file descriptor) [pid 5104] close(11) = -1 EBADF (Bad file descriptor) [pid 5104] close(12) = -1 EBADF (Bad file descriptor) [pid 5104] close(13) = -1 EBADF (Bad file descriptor) [pid 5104] close(14) = -1 EBADF (Bad file descriptor) [pid 5104] close(15) = -1 EBADF (Bad file descriptor) [pid 5104] close(16) = -1 EBADF (Bad file descriptor) [pid 5104] close(17) = -1 EBADF (Bad file descriptor) [pid 5104] close(18) = -1 EBADF (Bad file descriptor) [pid 5104] close(19) = -1 EBADF (Bad file descriptor) [pid 5104] close(20) = -1 EBADF (Bad file descriptor) [pid 5104] close(21) = -1 EBADF (Bad file descriptor) [pid 5104] close(22) = -1 EBADF (Bad file descriptor) [pid 5104] close(23) = -1 EBADF (Bad file descriptor) [pid 5104] close(24) = -1 EBADF (Bad file descriptor) [pid 5104] close(25) = -1 EBADF (Bad file descriptor) [pid 5104] close(26) = -1 EBADF (Bad file descriptor) [pid 5104] close(27) = -1 EBADF (Bad file descriptor) [pid 5104] close(28) = -1 EBADF (Bad file descriptor) [pid 5104] close(29) = -1 EBADF (Bad file descriptor) [pid 5104] exit_group(0) = ? [pid 5104] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=38, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./18/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./18/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./18/cgroup.cpu") = 0 [pid 5064] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./18/binderfs") = 0 [pid 5064] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5105] exit(0 [pid 5064] <... umount2 resumed>) = 0 [pid 5105] <... exit resumed>) = ? [pid 5064] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./18/file0", [pid 5105] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=39, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./18/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./18/file0") = 0 [pid 5064] umount2("./18/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./18/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./18/cgroup") = 0 [pid 5064] umount2("./18/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./18/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./18/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./18") = 0 [pid 5064] mkdir("./19", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5107 attached , child_tidptr=0x555555a8a650) = 40 [pid 5107] set_robust_list(0x555555a8a660, 24) = 0 [pid 5107] chdir("./19") = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] setpgid(0, 0) = 0 [pid 5107] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5107] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5107] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5107] write(3, "1000", 4) = 4 [pid 5107] close(3) = 0 [pid 5107] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5107] mkdir("./file0", 000) = 0 [pid 5107] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5107] open("./file0", O_RDONLY) = 3 [pid 5107] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5107] write(4, "-pids ", 6) = 6 [pid 5107] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5107] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5108 attached ) = 41 [pid 5107] ptrace(PTRACE_ATTACH, 41) = -1 EPERM (Operation not permitted) [pid 5107] close(3) = 0 [pid 5107] close(4) = 0 [pid 5107] close(5) = -1 EBADF (Bad file descriptor) [pid 5107] close(6) = -1 EBADF (Bad file descriptor) [pid 5107] close(7) = -1 EBADF (Bad file descriptor) [pid 5107] close(8) = -1 EBADF (Bad file descriptor) [pid 5107] close(9) = -1 EBADF (Bad file descriptor) [pid 5107] close(10) = -1 EBADF (Bad file descriptor) [pid 5107] close(11) = -1 EBADF (Bad file descriptor) [pid 5107] close(12) = -1 EBADF (Bad file descriptor) [pid 5107] close(13) = -1 EBADF (Bad file descriptor) [pid 5107] close(14) = -1 EBADF (Bad file descriptor) [pid 5107] close(15) = -1 EBADF (Bad file descriptor) [pid 5107] close(16) = -1 EBADF (Bad file descriptor) [pid 5107] close(17) = -1 EBADF (Bad file descriptor) [pid 5107] close(18) = -1 EBADF (Bad file descriptor) [pid 5107] close(19) = -1 EBADF (Bad file descriptor) [pid 5107] close(20) = -1 EBADF (Bad file descriptor) [pid 5107] close(21) = -1 EBADF (Bad file descriptor) [pid 5107] close(22) = -1 EBADF (Bad file descriptor) [pid 5107] close(23) = -1 EBADF (Bad file descriptor) [pid 5107] close(24) = -1 EBADF (Bad file descriptor) [pid 5107] close(25) = -1 EBADF (Bad file descriptor) [pid 5107] close(26) = -1 EBADF (Bad file descriptor) [pid 5107] close(27) = -1 EBADF (Bad file descriptor) [pid 5107] close(28) = -1 EBADF (Bad file descriptor) [pid 5107] close(29) = -1 EBADF (Bad file descriptor) [pid 5107] exit_group(0) = ? [pid 5107] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=40, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./19/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./19/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./19/cgroup.cpu") = 0 [pid 5064] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./19/binderfs") = 0 [pid 5108] exit(0 [pid 5064] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./19/file0", [pid 5108] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5108] +++ exited with 0 +++ [pid 5064] openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=41, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./19/file0") = 0 [pid 5064] umount2("./19/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./19/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./19/cgroup") = 0 [pid 5064] umount2("./19/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./19/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./19/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./19") = 0 [pid 5064] mkdir("./20", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 42 ./strace-static-x86_64: Process 5109 attached [pid 5109] set_robust_list(0x555555a8a660, 24) = 0 [pid 5109] chdir("./20") = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5109] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5109] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5109] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5109] write(3, "1000", 4) = 4 [pid 5109] close(3) = 0 [pid 5109] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5109] mkdir("./file0", 000) = 0 [pid 5109] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5109] open("./file0", O_RDONLY) = 3 [pid 5109] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5109] write(4, "-pids ", 6) = 6 [pid 5109] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5109] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5110 attached ) = 43 [pid 5109] ptrace(PTRACE_ATTACH, 43) = -1 EPERM (Operation not permitted) [pid 5109] close(3) = 0 [pid 5109] close(4) = 0 [pid 5109] close(5) = -1 EBADF (Bad file descriptor) [pid 5109] close(6) = -1 EBADF (Bad file descriptor) [pid 5109] close(7) = -1 EBADF (Bad file descriptor) [pid 5109] close(8) = -1 EBADF (Bad file descriptor) [pid 5109] close(9) = -1 EBADF (Bad file descriptor) [pid 5109] close(10) = -1 EBADF (Bad file descriptor) [pid 5109] close(11) = -1 EBADF (Bad file descriptor) [pid 5109] close(12) = -1 EBADF (Bad file descriptor) [pid 5109] close(13) = -1 EBADF (Bad file descriptor) [pid 5109] close(14) = -1 EBADF (Bad file descriptor) [pid 5109] close(15) = -1 EBADF (Bad file descriptor) [pid 5109] close(16) = -1 EBADF (Bad file descriptor) [pid 5109] close(17) = -1 EBADF (Bad file descriptor) [pid 5109] close(18) = -1 EBADF (Bad file descriptor) [pid 5109] close(19) = -1 EBADF (Bad file descriptor) [pid 5109] close(20) = -1 EBADF (Bad file descriptor) [pid 5109] close(21) = -1 EBADF (Bad file descriptor) [pid 5109] close(22) = -1 EBADF (Bad file descriptor) [pid 5109] close(23) = -1 EBADF (Bad file descriptor) [pid 5109] close(24) = -1 EBADF (Bad file descriptor) [pid 5109] close(25) = -1 EBADF (Bad file descriptor) [pid 5109] close(26) = -1 EBADF (Bad file descriptor) [pid 5109] close(27) = -1 EBADF (Bad file descriptor) [pid 5109] close(28) = -1 EBADF (Bad file descriptor) [pid 5109] close(29) = -1 EBADF (Bad file descriptor) [pid 5109] exit_group(0) = ? [pid 5109] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=42, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./20/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./20/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./20/cgroup.cpu") = 0 [pid 5064] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./20/binderfs", [pid 5110] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5110] <... exit resumed>) = ? [pid 5064] unlink("./20/binderfs") = 0 [pid 5064] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5110] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=43, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./20/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./20/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./20/file0") = 0 [pid 5064] umount2("./20/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./20/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./20/cgroup") = 0 [pid 5064] umount2("./20/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./20/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./20/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./20") = 0 [pid 5064] mkdir("./21", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5111 attached , child_tidptr=0x555555a8a650) = 44 [pid 5111] set_robust_list(0x555555a8a660, 24) = 0 [pid 5111] chdir("./21") = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5111] setpgid(0, 0) = 0 [pid 5111] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5111] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5111] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5111] write(3, "1000", 4) = 4 [pid 5111] close(3) = 0 [pid 5111] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5111] mkdir("./file0", 000) = 0 [pid 5111] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5111] open("./file0", O_RDONLY) = 3 [pid 5111] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5111] write(4, "-pids ", 6) = 6 [pid 5111] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5111] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5112 attached ) = 45 [pid 5111] ptrace(PTRACE_ATTACH, 45) = -1 EPERM (Operation not permitted) [pid 5111] close(3) = 0 [pid 5111] close(4) = 0 [pid 5111] close(5) = -1 EBADF (Bad file descriptor) [pid 5111] close(6) = -1 EBADF (Bad file descriptor) [pid 5111] close(7) = -1 EBADF (Bad file descriptor) [pid 5111] close(8) = -1 EBADF (Bad file descriptor) [pid 5111] close(9) = -1 EBADF (Bad file descriptor) [pid 5111] close(10) = -1 EBADF (Bad file descriptor) [pid 5111] close(11) = -1 EBADF (Bad file descriptor) [pid 5111] close(12) = -1 EBADF (Bad file descriptor) [pid 5111] close(13) = -1 EBADF (Bad file descriptor) [pid 5111] close(14) = -1 EBADF (Bad file descriptor) [pid 5111] close(15) = -1 EBADF (Bad file descriptor) [pid 5111] close(16) = -1 EBADF (Bad file descriptor) [pid 5111] close(17) = -1 EBADF (Bad file descriptor) [pid 5111] close(18) = -1 EBADF (Bad file descriptor) [pid 5111] close(19) = -1 EBADF (Bad file descriptor) [pid 5111] close(20) = -1 EBADF (Bad file descriptor) [pid 5111] close(21) = -1 EBADF (Bad file descriptor) [pid 5111] close(22) = -1 EBADF (Bad file descriptor) [pid 5111] close(23) = -1 EBADF (Bad file descriptor) [pid 5111] close(24) = -1 EBADF (Bad file descriptor) [pid 5111] close(25) = -1 EBADF (Bad file descriptor) [pid 5111] close(26) = -1 EBADF (Bad file descriptor) [pid 5111] close(27) = -1 EBADF (Bad file descriptor) [pid 5111] close(28) = -1 EBADF (Bad file descriptor) [pid 5111] close(29) = -1 EBADF (Bad file descriptor) [pid 5111] exit_group(0) = ? [pid 5111] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=44, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./21/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./21/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./21/cgroup.cpu") = 0 [pid 5064] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5112] exit(0 [pid 5064] newfstatat(AT_FDCWD, "./21/binderfs", [pid 5112] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./21/binderfs") = 0 [pid 5064] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5112] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=45, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./21/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./21/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./21/file0") = 0 [pid 5064] umount2("./21/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./21/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./21/cgroup") = 0 [pid 5064] umount2("./21/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./21/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./21/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./21") = 0 [pid 5064] mkdir("./22", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5113 attached , child_tidptr=0x555555a8a650) = 46 [pid 5113] set_robust_list(0x555555a8a660, 24) = 0 [pid 5113] chdir("./22") = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5113] setpgid(0, 0) = 0 [pid 5113] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5113] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5113] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5113] write(3, "1000", 4) = 4 [pid 5113] close(3) = 0 [pid 5113] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5113] mkdir("./file0", 000) = 0 [pid 5113] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5113] open("./file0", O_RDONLY) = 3 [pid 5113] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5113] write(4, "-pids ", 6) = 6 [pid 5113] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5113] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5114 attached ) = 47 [pid 5113] ptrace(PTRACE_ATTACH, 47) = -1 EPERM (Operation not permitted) [pid 5113] close(3) = 0 [pid 5113] close(4) = 0 [pid 5113] close(5) = -1 EBADF (Bad file descriptor) [pid 5113] close(6) = -1 EBADF (Bad file descriptor) [pid 5113] close(7) = -1 EBADF (Bad file descriptor) [pid 5113] close(8) = -1 EBADF (Bad file descriptor) [pid 5113] close(9) = -1 EBADF (Bad file descriptor) [pid 5113] close(10) = -1 EBADF (Bad file descriptor) [pid 5113] close(11) = -1 EBADF (Bad file descriptor) [pid 5113] close(12) = -1 EBADF (Bad file descriptor) [pid 5113] close(13) = -1 EBADF (Bad file descriptor) [pid 5113] close(14) = -1 EBADF (Bad file descriptor) [pid 5113] close(15) = -1 EBADF (Bad file descriptor) [pid 5113] close(16) = -1 EBADF (Bad file descriptor) [pid 5113] close(17) = -1 EBADF (Bad file descriptor) [pid 5113] close(18) = -1 EBADF (Bad file descriptor) [pid 5113] close(19) = -1 EBADF (Bad file descriptor) [pid 5113] close(20) = -1 EBADF (Bad file descriptor) [pid 5113] close(21) = -1 EBADF (Bad file descriptor) [pid 5113] close(22) = -1 EBADF (Bad file descriptor) [pid 5113] close(23) = -1 EBADF (Bad file descriptor) [pid 5113] close(24) = -1 EBADF (Bad file descriptor) [pid 5113] close(25) = -1 EBADF (Bad file descriptor) [pid 5113] close(26) = -1 EBADF (Bad file descriptor) [pid 5113] close(27) = -1 EBADF (Bad file descriptor) [pid 5113] close(28) = -1 EBADF (Bad file descriptor) [pid 5113] close(29) = -1 EBADF (Bad file descriptor) [pid 5113] exit_group(0) = ? [pid 5113] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=46, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5114] exit(0 [pid 5064] umount2("./22/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5114] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./22/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5114] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=47, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./22/cgroup.cpu") = 0 [pid 5064] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./22/binderfs") = 0 [pid 5064] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./22/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./22/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./22/file0") = 0 [pid 5064] umount2("./22/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./22/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./22/cgroup") = 0 [pid 5064] umount2("./22/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./22/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./22/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./22") = 0 [pid 5064] mkdir("./23", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5115 attached , child_tidptr=0x555555a8a650) = 48 [pid 5115] set_robust_list(0x555555a8a660, 24) = 0 [pid 5115] chdir("./23") = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5115] setpgid(0, 0) = 0 [pid 5115] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5115] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5115] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5115] write(3, "1000", 4) = 4 [pid 5115] close(3) = 0 [pid 5115] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5115] mkdir("./file0", 000) = 0 [pid 5115] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5115] open("./file0", O_RDONLY) = 3 [pid 5115] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5115] write(4, "-pids ", 6) = 6 [pid 5115] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5115] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5116 attached ) = 49 [pid 5115] ptrace(PTRACE_ATTACH, 49) = -1 EPERM (Operation not permitted) [pid 5115] close(3) = 0 [pid 5115] close(4) = 0 [pid 5115] close(5) = -1 EBADF (Bad file descriptor) [pid 5115] close(6) = -1 EBADF (Bad file descriptor) [pid 5115] close(7) = -1 EBADF (Bad file descriptor) [pid 5115] close(8) = -1 EBADF (Bad file descriptor) [pid 5115] close(9) = -1 EBADF (Bad file descriptor) [pid 5115] close(10) = -1 EBADF (Bad file descriptor) [pid 5115] close(11) = -1 EBADF (Bad file descriptor) [pid 5115] close(12) = -1 EBADF (Bad file descriptor) [pid 5115] close(13) = -1 EBADF (Bad file descriptor) [pid 5115] close(14) = -1 EBADF (Bad file descriptor) [pid 5115] close(15) = -1 EBADF (Bad file descriptor) [pid 5115] close(16) = -1 EBADF (Bad file descriptor) [pid 5115] close(17) = -1 EBADF (Bad file descriptor) [pid 5115] close(18) = -1 EBADF (Bad file descriptor) [pid 5115] close(19) = -1 EBADF (Bad file descriptor) [pid 5115] close(20) = -1 EBADF (Bad file descriptor) [pid 5115] close(21) = -1 EBADF (Bad file descriptor) [pid 5115] close(22) = -1 EBADF (Bad file descriptor) [pid 5115] close(23) = -1 EBADF (Bad file descriptor) [pid 5115] close(24) = -1 EBADF (Bad file descriptor) [pid 5115] close(25) = -1 EBADF (Bad file descriptor) [pid 5115] close(26) = -1 EBADF (Bad file descriptor) [pid 5115] close(27) = -1 EBADF (Bad file descriptor) [pid 5115] close(28) = -1 EBADF (Bad file descriptor) [pid 5115] close(29) = -1 EBADF (Bad file descriptor) [pid 5115] exit_group(0) = ? [pid 5115] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=48, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./23/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./23/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./23/cgroup.cpu") = 0 [pid 5064] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5116] exit(0) = ? [pid 5064] newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./23/binderfs" [pid 5116] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./23/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./23/file0") = 0 [pid 5064] umount2("./23/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./23/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./23/cgroup") = 0 [pid 5064] umount2("./23/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./23/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./23/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./23") = 0 [pid 5064] mkdir("./24", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5117 attached , child_tidptr=0x555555a8a650) = 50 [pid 5117] set_robust_list(0x555555a8a660, 24) = 0 [pid 5117] chdir("./24") = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5117] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5117] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5117] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3) = 0 [pid 5117] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5117] mkdir("./file0", 000) = 0 [pid 5117] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5117] open("./file0", O_RDONLY) = 3 [pid 5117] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5117] write(4, "-pids ", 6) = 6 [pid 5117] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5117] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5118 attached ) = 51 [pid 5117] ptrace(PTRACE_ATTACH, 51) = -1 EPERM (Operation not permitted) [pid 5117] close(3) = 0 [pid 5117] close(4) = 0 [pid 5117] close(5) = -1 EBADF (Bad file descriptor) [pid 5117] close(6) = -1 EBADF (Bad file descriptor) [pid 5117] close(7) = -1 EBADF (Bad file descriptor) [pid 5117] close(8) = -1 EBADF (Bad file descriptor) [pid 5117] close(9) = -1 EBADF (Bad file descriptor) [pid 5117] close(10) = -1 EBADF (Bad file descriptor) [pid 5117] close(11) = -1 EBADF (Bad file descriptor) [pid 5117] close(12) = -1 EBADF (Bad file descriptor) [pid 5117] close(13) = -1 EBADF (Bad file descriptor) [pid 5117] close(14) = -1 EBADF (Bad file descriptor) [pid 5117] close(15) = -1 EBADF (Bad file descriptor) [pid 5117] close(16) = -1 EBADF (Bad file descriptor) [pid 5117] close(17) = -1 EBADF (Bad file descriptor) [pid 5117] close(18) = -1 EBADF (Bad file descriptor) [pid 5117] close(19) = -1 EBADF (Bad file descriptor) [pid 5117] close(20) = -1 EBADF (Bad file descriptor) [pid 5117] close(21) = -1 EBADF (Bad file descriptor) [pid 5117] close(22) = -1 EBADF (Bad file descriptor) [pid 5117] close(23) = -1 EBADF (Bad file descriptor) [pid 5117] close(24) = -1 EBADF (Bad file descriptor) [pid 5117] close(25) = -1 EBADF (Bad file descriptor) [pid 5117] close(26) = -1 EBADF (Bad file descriptor) [pid 5117] close(27) = -1 EBADF (Bad file descriptor) [pid 5117] close(28) = -1 EBADF (Bad file descriptor) [pid 5117] close(29) = -1 EBADF (Bad file descriptor) [pid 5117] exit_group(0) = ? [pid 5117] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=50, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./24/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./24/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./24/cgroup.cpu") = 0 [pid 5064] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5118] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5118] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./24/binderfs") = 0 [pid 5118] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=51, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./24/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./24/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./24/file0") = 0 [pid 5064] umount2("./24/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./24/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./24/cgroup") = 0 [pid 5064] umount2("./24/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./24/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./24/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./24") = 0 [pid 5064] mkdir("./25", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 52 ./strace-static-x86_64: Process 5119 attached [pid 5119] set_robust_list(0x555555a8a660, 24) = 0 [pid 5119] chdir("./25") = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5119] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5119] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3) = 0 [pid 5119] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5119] mkdir("./file0", 000) = 0 [pid 5119] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5119] open("./file0", O_RDONLY) = 3 [pid 5119] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5119] write(4, "-pids ", 6) = 6 [pid 5119] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5119] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5120 attached ) = 53 [pid 5119] ptrace(PTRACE_ATTACH, 53) = -1 EPERM (Operation not permitted) [pid 5119] close(3) = 0 [pid 5119] close(4) = 0 [pid 5119] close(5) = -1 EBADF (Bad file descriptor) [pid 5119] close(6) = -1 EBADF (Bad file descriptor) [pid 5119] close(7) = -1 EBADF (Bad file descriptor) [pid 5119] close(8) = -1 EBADF (Bad file descriptor) [pid 5119] close(9) = -1 EBADF (Bad file descriptor) [pid 5119] close(10) = -1 EBADF (Bad file descriptor) [pid 5119] close(11) = -1 EBADF (Bad file descriptor) [pid 5119] close(12) = -1 EBADF (Bad file descriptor) [pid 5119] close(13) = -1 EBADF (Bad file descriptor) [pid 5119] close(14) = -1 EBADF (Bad file descriptor) [pid 5119] close(15) = -1 EBADF (Bad file descriptor) [pid 5119] close(16) = -1 EBADF (Bad file descriptor) [pid 5119] close(17) = -1 EBADF (Bad file descriptor) [pid 5119] close(18) = -1 EBADF (Bad file descriptor) [pid 5119] close(19) = -1 EBADF (Bad file descriptor) [pid 5119] close(20) = -1 EBADF (Bad file descriptor) [pid 5119] close(21) = -1 EBADF (Bad file descriptor) [pid 5119] close(22) = -1 EBADF (Bad file descriptor) [pid 5119] close(23) = -1 EBADF (Bad file descriptor) [pid 5119] close(24) = -1 EBADF (Bad file descriptor) [pid 5119] close(25) = -1 EBADF (Bad file descriptor) [pid 5119] close(26) = -1 EBADF (Bad file descriptor) [pid 5119] close(27) = -1 EBADF (Bad file descriptor) [pid 5119] close(28) = -1 EBADF (Bad file descriptor) [pid 5119] close(29) = -1 EBADF (Bad file descriptor) [pid 5119] exit_group(0) = ? [pid 5119] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=52, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./25/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5120] exit(0 [pid 5064] newfstatat(AT_FDCWD, "./25/cgroup.cpu", [pid 5120] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./25/cgroup.cpu") = 0 [pid 5064] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5120] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=53, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./25/binderfs") = 0 [pid 5064] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./25/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./25/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./25/file0") = 0 [pid 5064] umount2("./25/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./25/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./25/cgroup") = 0 [pid 5064] umount2("./25/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./25/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./25/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./25") = 0 [pid 5064] mkdir("./26", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5122 attached , child_tidptr=0x555555a8a650) = 54 [pid 5122] set_robust_list(0x555555a8a660, 24) = 0 [pid 5122] chdir("./26") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5122] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5122] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] mkdir("./file0", 000) = 0 [pid 5122] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5122] open("./file0", O_RDONLY) = 3 [pid 5122] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5122] write(4, "-pids ", 6) = 6 [pid 5122] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5122] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5123 attached ) = 55 [pid 5122] ptrace(PTRACE_ATTACH, 55) = -1 EPERM (Operation not permitted) [pid 5122] close(3) = 0 [pid 5122] close(4) = 0 [pid 5122] close(5) = -1 EBADF (Bad file descriptor) [pid 5122] close(6) = -1 EBADF (Bad file descriptor) [pid 5122] close(7) = -1 EBADF (Bad file descriptor) [pid 5122] close(8) = -1 EBADF (Bad file descriptor) [pid 5122] close(9) = -1 EBADF (Bad file descriptor) [pid 5122] close(10) = -1 EBADF (Bad file descriptor) [pid 5122] close(11) = -1 EBADF (Bad file descriptor) [pid 5122] close(12) = -1 EBADF (Bad file descriptor) [pid 5122] close(13) = -1 EBADF (Bad file descriptor) [pid 5122] close(14) = -1 EBADF (Bad file descriptor) [pid 5122] close(15) = -1 EBADF (Bad file descriptor) [pid 5122] close(16) = -1 EBADF (Bad file descriptor) [pid 5122] close(17) = -1 EBADF (Bad file descriptor) [pid 5122] close(18) = -1 EBADF (Bad file descriptor) [pid 5122] close(19) = -1 EBADF (Bad file descriptor) [pid 5122] close(20) = -1 EBADF (Bad file descriptor) [pid 5122] close(21) = -1 EBADF (Bad file descriptor) [pid 5122] close(22) = -1 EBADF (Bad file descriptor) [pid 5122] close(23) = -1 EBADF (Bad file descriptor) [pid 5122] close(24) = -1 EBADF (Bad file descriptor) [pid 5122] close(25) = -1 EBADF (Bad file descriptor) [pid 5122] close(26) = -1 EBADF (Bad file descriptor) [pid 5122] close(27) = -1 EBADF (Bad file descriptor) [pid 5122] close(28) = -1 EBADF (Bad file descriptor) [pid 5122] close(29) = -1 EBADF (Bad file descriptor) [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=54, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./26/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./26/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./26/cgroup.cpu" [pid 5123] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5123] <... exit resumed>) = ? [pid 5064] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5123] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=55, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./26/binderfs") = 0 [pid 5064] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./26/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./26/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./26/file0") = 0 [pid 5064] umount2("./26/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./26/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./26/cgroup") = 0 [pid 5064] umount2("./26/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./26/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./26/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./26") = 0 [pid 5064] mkdir("./27", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5124 attached , child_tidptr=0x555555a8a650) = 56 [pid 5124] set_robust_list(0x555555a8a660, 24) = 0 [pid 5124] chdir("./27") = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5124] setpgid(0, 0) = 0 [pid 5124] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5124] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5124] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5124] write(3, "1000", 4) = 4 [pid 5124] close(3) = 0 [pid 5124] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5124] mkdir("./file0", 000) = 0 [pid 5124] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5124] open("./file0", O_RDONLY) = 3 [pid 5124] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5124] write(4, "-pids ", 6) = 6 [pid 5124] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5124] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5125 attached ) = 57 [pid 5124] ptrace(PTRACE_ATTACH, 57) = -1 EPERM (Operation not permitted) [pid 5124] close(3) = 0 [pid 5124] close(4) = 0 [pid 5124] close(5) = -1 EBADF (Bad file descriptor) [pid 5124] close(6) = -1 EBADF (Bad file descriptor) [pid 5124] close(7) = -1 EBADF (Bad file descriptor) [pid 5124] close(8) = -1 EBADF (Bad file descriptor) [pid 5124] close(9) = -1 EBADF (Bad file descriptor) [pid 5124] close(10) = -1 EBADF (Bad file descriptor) [pid 5124] close(11) = -1 EBADF (Bad file descriptor) [pid 5124] close(12) = -1 EBADF (Bad file descriptor) [pid 5124] close(13) = -1 EBADF (Bad file descriptor) [pid 5124] close(14) = -1 EBADF (Bad file descriptor) [pid 5124] close(15) = -1 EBADF (Bad file descriptor) [pid 5124] close(16) = -1 EBADF (Bad file descriptor) [pid 5124] close(17) = -1 EBADF (Bad file descriptor) [pid 5124] close(18) = -1 EBADF (Bad file descriptor) [pid 5124] close(19) = -1 EBADF (Bad file descriptor) [pid 5124] close(20) = -1 EBADF (Bad file descriptor) [pid 5124] close(21) = -1 EBADF (Bad file descriptor) [pid 5124] close(22) = -1 EBADF (Bad file descriptor) [pid 5124] close(23) = -1 EBADF (Bad file descriptor) [pid 5124] close(24) = -1 EBADF (Bad file descriptor) [pid 5124] close(25) = -1 EBADF (Bad file descriptor) [pid 5124] close(26) = -1 EBADF (Bad file descriptor) [pid 5124] close(27) = -1 EBADF (Bad file descriptor) [pid 5124] close(28) = -1 EBADF (Bad file descriptor) [pid 5124] close(29) = -1 EBADF (Bad file descriptor) [pid 5124] exit_group(0) = ? [pid 5124] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=56, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./27/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./27/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./27/cgroup.cpu") = 0 [pid 5064] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./27/binderfs", [pid 5125] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5125] <... exit resumed>) = ? [pid 5064] unlink("./27/binderfs") = 0 [pid 5064] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5125] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=57, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./27/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./27/file0") = 0 [pid 5064] umount2("./27/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./27/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./27/cgroup") = 0 [pid 5064] umount2("./27/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./27/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./27/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./27") = 0 [pid 5064] mkdir("./28", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5126 attached , child_tidptr=0x555555a8a650) = 58 [pid 5126] set_robust_list(0x555555a8a660, 24) = 0 [pid 5126] chdir("./28") = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 0 [pid 5126] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5126] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5126] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5126] mkdir("./file0", 000) = 0 [pid 5126] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5126] open("./file0", O_RDONLY) = 3 [pid 5126] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5126] write(4, "-pids ", 6) = 6 [pid 5126] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5126] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5127 attached ) = 59 [pid 5126] ptrace(PTRACE_ATTACH, 59) = -1 EPERM (Operation not permitted) [pid 5126] close(3) = 0 [pid 5126] close(4) = 0 [pid 5126] close(5) = -1 EBADF (Bad file descriptor) [pid 5126] close(6) = -1 EBADF (Bad file descriptor) [pid 5126] close(7) = -1 EBADF (Bad file descriptor) [pid 5126] close(8) = -1 EBADF (Bad file descriptor) [pid 5126] close(9) = -1 EBADF (Bad file descriptor) [pid 5126] close(10) = -1 EBADF (Bad file descriptor) [pid 5126] close(11) = -1 EBADF (Bad file descriptor) [pid 5126] close(12) = -1 EBADF (Bad file descriptor) [pid 5126] close(13) = -1 EBADF (Bad file descriptor) [pid 5126] close(14) = -1 EBADF (Bad file descriptor) [pid 5126] close(15) = -1 EBADF (Bad file descriptor) [pid 5126] close(16) = -1 EBADF (Bad file descriptor) [pid 5126] close(17) = -1 EBADF (Bad file descriptor) [pid 5126] close(18) = -1 EBADF (Bad file descriptor) [pid 5126] close(19) = -1 EBADF (Bad file descriptor) [pid 5126] close(20) = -1 EBADF (Bad file descriptor) [pid 5126] close(21) = -1 EBADF (Bad file descriptor) [pid 5126] close(22) = -1 EBADF (Bad file descriptor) [pid 5126] close(23) = -1 EBADF (Bad file descriptor) [pid 5126] close(24) = -1 EBADF (Bad file descriptor) [pid 5126] close(25) = -1 EBADF (Bad file descriptor) [pid 5126] close(26) = -1 EBADF (Bad file descriptor) [pid 5126] close(27) = -1 EBADF (Bad file descriptor) [pid 5126] close(28) = -1 EBADF (Bad file descriptor) [pid 5126] close(29) = -1 EBADF (Bad file descriptor) [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=58, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./28/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./28/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./28/cgroup.cpu") = 0 [pid 5064] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./28/binderfs" [pid 5127] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5127] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=59, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./28/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./28/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./28/file0") = 0 [pid 5064] umount2("./28/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./28/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./28/cgroup") = 0 [pid 5064] umount2("./28/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./28/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./28/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./28") = 0 [pid 5064] mkdir("./29", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5128 attached , child_tidptr=0x555555a8a650) = 60 [pid 5128] set_robust_list(0x555555a8a660, 24) = 0 [pid 5128] chdir("./29") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5128] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5128] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] mkdir("./file0", 000) = 0 [pid 5128] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5128] open("./file0", O_RDONLY) = 3 [pid 5128] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5128] write(4, "-pids ", 6) = 6 [pid 5128] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5128] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5129 attached ) = 61 [pid 5128] ptrace(PTRACE_ATTACH, 61) = -1 EPERM (Operation not permitted) [pid 5128] close(3) = 0 [pid 5128] close(4) = 0 [pid 5128] close(5) = -1 EBADF (Bad file descriptor) [pid 5128] close(6) = -1 EBADF (Bad file descriptor) [pid 5128] close(7) = -1 EBADF (Bad file descriptor) [pid 5128] close(8) = -1 EBADF (Bad file descriptor) [pid 5128] close(9) = -1 EBADF (Bad file descriptor) [pid 5128] close(10) = -1 EBADF (Bad file descriptor) [pid 5128] close(11) = -1 EBADF (Bad file descriptor) [pid 5128] close(12) = -1 EBADF (Bad file descriptor) [pid 5128] close(13) = -1 EBADF (Bad file descriptor) [pid 5128] close(14) = -1 EBADF (Bad file descriptor) [pid 5128] close(15) = -1 EBADF (Bad file descriptor) [pid 5128] close(16) = -1 EBADF (Bad file descriptor) [pid 5128] close(17) = -1 EBADF (Bad file descriptor) [pid 5128] close(18) = -1 EBADF (Bad file descriptor) [pid 5128] close(19) = -1 EBADF (Bad file descriptor) [pid 5128] close(20) = -1 EBADF (Bad file descriptor) [pid 5128] close(21) = -1 EBADF (Bad file descriptor) [pid 5128] close(22) = -1 EBADF (Bad file descriptor) [pid 5128] close(23) = -1 EBADF (Bad file descriptor) [pid 5128] close(24) = -1 EBADF (Bad file descriptor) [pid 5128] close(25) = -1 EBADF (Bad file descriptor) [pid 5128] close(26) = -1 EBADF (Bad file descriptor) [pid 5128] close(27) = -1 EBADF (Bad file descriptor) [pid 5128] close(28) = -1 EBADF (Bad file descriptor) [pid 5128] close(29) = -1 EBADF (Bad file descriptor) [pid 5128] exit_group(0) = ? [pid 5128] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=60, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./29/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./29/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5129] exit(0 [pid 5064] unlink("./29/cgroup.cpu" [pid 5129] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./29/binderfs", [pid 5129] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=61, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./29/binderfs") = 0 [pid 5064] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./29/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./29/file0") = 0 [pid 5064] umount2("./29/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./29/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./29/cgroup") = 0 [pid 5064] umount2("./29/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./29/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./29/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./29") = 0 [pid 5064] mkdir("./30", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5130 attached , child_tidptr=0x555555a8a650) = 62 [pid 5130] set_robust_list(0x555555a8a660, 24) = 0 [pid 5130] chdir("./30") = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5130] setpgid(0, 0) = 0 [pid 5130] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5130] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5130] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5130] write(3, "1000", 4) = 4 [pid 5130] close(3) = 0 [pid 5130] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5130] mkdir("./file0", 000) = 0 [pid 5130] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5130] open("./file0", O_RDONLY) = 3 [pid 5130] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5130] write(4, "-pids ", 6) = 6 [pid 5130] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5130] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5131 attached ) = 63 [pid 5130] ptrace(PTRACE_ATTACH, 63) = -1 EPERM (Operation not permitted) [pid 5130] close(3) = 0 [pid 5130] close(4) = 0 [pid 5130] close(5) = -1 EBADF (Bad file descriptor) [pid 5130] close(6) = -1 EBADF (Bad file descriptor) [pid 5130] close(7) = -1 EBADF (Bad file descriptor) [pid 5130] close(8) = -1 EBADF (Bad file descriptor) [pid 5130] close(9) = -1 EBADF (Bad file descriptor) [pid 5130] close(10) = -1 EBADF (Bad file descriptor) [pid 5130] close(11) = -1 EBADF (Bad file descriptor) [pid 5130] close(12) = -1 EBADF (Bad file descriptor) [pid 5130] close(13) = -1 EBADF (Bad file descriptor) [pid 5130] close(14) = -1 EBADF (Bad file descriptor) [pid 5130] close(15) = -1 EBADF (Bad file descriptor) [pid 5130] close(16) = -1 EBADF (Bad file descriptor) [pid 5130] close(17) = -1 EBADF (Bad file descriptor) [pid 5130] close(18) = -1 EBADF (Bad file descriptor) [pid 5130] close(19) = -1 EBADF (Bad file descriptor) [pid 5130] close(20) = -1 EBADF (Bad file descriptor) [pid 5130] close(21) = -1 EBADF (Bad file descriptor) [pid 5130] close(22) = -1 EBADF (Bad file descriptor) [pid 5130] close(23) = -1 EBADF (Bad file descriptor) [pid 5130] close(24) = -1 EBADF (Bad file descriptor) [pid 5130] close(25) = -1 EBADF (Bad file descriptor) [pid 5130] close(26) = -1 EBADF (Bad file descriptor) [pid 5130] close(27) = -1 EBADF (Bad file descriptor) [pid 5130] close(28) = -1 EBADF (Bad file descriptor) [pid 5130] close(29) = -1 EBADF (Bad file descriptor) [pid 5130] exit_group(0) = ? [pid 5130] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=62, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./30/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./30/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./30/cgroup.cpu") = 0 [pid 5064] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./30/binderfs") = 0 [pid 5064] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./30/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5131] exit(0) = ? [pid 5064] openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5131] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=63, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./30/file0") = 0 [pid 5064] umount2("./30/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./30/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./30/cgroup") = 0 [pid 5064] umount2("./30/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./30/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./30/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./30") = 0 [pid 5064] mkdir("./31", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5132 attached , child_tidptr=0x555555a8a650) = 64 [pid 5132] set_robust_list(0x555555a8a660, 24) = 0 [pid 5132] chdir("./31") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5132] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5132] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] mkdir("./file0", 000) = 0 [pid 5132] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5132] open("./file0", O_RDONLY) = 3 [pid 5132] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5132] write(4, "-pids ", 6) = 6 [pid 5132] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5132] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5133 attached ) = 65 [pid 5132] ptrace(PTRACE_ATTACH, 65) = -1 EPERM (Operation not permitted) [pid 5132] close(3) = 0 [pid 5132] close(4) = 0 [pid 5132] close(5) = -1 EBADF (Bad file descriptor) [pid 5132] close(6) = -1 EBADF (Bad file descriptor) [pid 5132] close(7) = -1 EBADF (Bad file descriptor) [pid 5132] close(8) = -1 EBADF (Bad file descriptor) [pid 5132] close(9) = -1 EBADF (Bad file descriptor) [pid 5132] close(10) = -1 EBADF (Bad file descriptor) [pid 5132] close(11) = -1 EBADF (Bad file descriptor) [pid 5132] close(12) = -1 EBADF (Bad file descriptor) [pid 5132] close(13) = -1 EBADF (Bad file descriptor) [pid 5132] close(14) = -1 EBADF (Bad file descriptor) [pid 5132] close(15) = -1 EBADF (Bad file descriptor) [pid 5132] close(16) = -1 EBADF (Bad file descriptor) [pid 5132] close(17) = -1 EBADF (Bad file descriptor) [pid 5132] close(18) = -1 EBADF (Bad file descriptor) [pid 5132] close(19) = -1 EBADF (Bad file descriptor) [pid 5132] close(20) = -1 EBADF (Bad file descriptor) [pid 5132] close(21) = -1 EBADF (Bad file descriptor) [pid 5132] close(22) = -1 EBADF (Bad file descriptor) [pid 5132] close(23) = -1 EBADF (Bad file descriptor) [pid 5132] close(24) = -1 EBADF (Bad file descriptor) [pid 5132] close(25) = -1 EBADF (Bad file descriptor) [pid 5132] close(26) = -1 EBADF (Bad file descriptor) [pid 5132] close(27) = -1 EBADF (Bad file descriptor) [pid 5132] close(28) = -1 EBADF (Bad file descriptor) [pid 5132] close(29) = -1 EBADF (Bad file descriptor) [pid 5132] exit_group(0) = ? [pid 5132] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=64, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./31/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./31/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./31/cgroup.cpu") = 0 [pid 5064] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./31/binderfs") = 0 [pid 5064] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./31/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5133] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5133] <... exit resumed>) = ? [pid 5064] openat(AT_FDCWD, "./31/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", [pid 5133] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=65, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./31/file0") = 0 [pid 5064] umount2("./31/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./31/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./31/cgroup") = 0 [pid 5064] umount2("./31/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./31/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./31/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./31") = 0 [pid 5064] mkdir("./32", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5134 attached , child_tidptr=0x555555a8a650) = 66 [pid 5134] set_robust_list(0x555555a8a660, 24) = 0 [pid 5134] chdir("./32") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5134] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5134] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] mkdir("./file0", 000) = 0 [pid 5134] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5134] open("./file0", O_RDONLY) = 3 [pid 5134] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5134] write(4, "-pids ", 6) = 6 [pid 5134] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5134] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5136 attached ) = 67 [pid 5134] ptrace(PTRACE_ATTACH, 67) = -1 EPERM (Operation not permitted) [pid 5134] close(3) = 0 [pid 5134] close(4) = 0 [pid 5134] close(5) = -1 EBADF (Bad file descriptor) [pid 5134] close(6) = -1 EBADF (Bad file descriptor) [pid 5134] close(7) = -1 EBADF (Bad file descriptor) [pid 5134] close(8) = -1 EBADF (Bad file descriptor) [pid 5134] close(9) = -1 EBADF (Bad file descriptor) [pid 5134] close(10) = -1 EBADF (Bad file descriptor) [pid 5134] close(11) = -1 EBADF (Bad file descriptor) [pid 5134] close(12) = -1 EBADF (Bad file descriptor) [pid 5134] close(13) = -1 EBADF (Bad file descriptor) [pid 5134] close(14) = -1 EBADF (Bad file descriptor) [pid 5134] close(15) = -1 EBADF (Bad file descriptor) [pid 5134] close(16) = -1 EBADF (Bad file descriptor) [pid 5134] close(17) = -1 EBADF (Bad file descriptor) [pid 5134] close(18) = -1 EBADF (Bad file descriptor) [pid 5134] close(19) = -1 EBADF (Bad file descriptor) [pid 5134] close(20) = -1 EBADF (Bad file descriptor) [pid 5134] close(21) = -1 EBADF (Bad file descriptor) [pid 5134] close(22) = -1 EBADF (Bad file descriptor) [pid 5134] close(23) = -1 EBADF (Bad file descriptor) [pid 5134] close(24) = -1 EBADF (Bad file descriptor) [pid 5134] close(25) = -1 EBADF (Bad file descriptor) [pid 5134] close(26) = -1 EBADF (Bad file descriptor) [pid 5134] close(27) = -1 EBADF (Bad file descriptor) [pid 5134] close(28) = -1 EBADF (Bad file descriptor) [pid 5134] close(29) = -1 EBADF (Bad file descriptor) [pid 5134] exit_group(0) = ? [pid 5134] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=66, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5136] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5136] <... exit resumed>) = ? [pid 5136] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=67, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./32/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./32/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./32/cgroup.cpu") = 0 [pid 5064] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./32/binderfs") = 0 [pid 5064] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./32/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./32/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./32/file0") = 0 [pid 5064] umount2("./32/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./32/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./32/cgroup") = 0 [pid 5064] umount2("./32/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./32/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./32/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./32") = 0 [pid 5064] mkdir("./33", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5137 attached , child_tidptr=0x555555a8a650) = 68 [pid 5137] set_robust_list(0x555555a8a660, 24) = 0 [pid 5137] chdir("./33") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5137] setpgid(0, 0) = 0 [pid 5137] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5137] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5137] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5137] write(3, "1000", 4) = 4 [pid 5137] close(3) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5137] mkdir("./file0", 000) = 0 [pid 5137] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5137] open("./file0", O_RDONLY) = 3 [pid 5137] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5137] write(4, "-pids ", 6) = 6 [pid 5137] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5137] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5138 attached ) = 69 [pid 5137] ptrace(PTRACE_ATTACH, 69) = -1 EPERM (Operation not permitted) [pid 5137] close(3) = 0 [pid 5137] close(4) = 0 [pid 5137] close(5) = -1 EBADF (Bad file descriptor) [pid 5137] close(6) = -1 EBADF (Bad file descriptor) [pid 5137] close(7) = -1 EBADF (Bad file descriptor) [pid 5137] close(8) = -1 EBADF (Bad file descriptor) [pid 5137] close(9) = -1 EBADF (Bad file descriptor) [pid 5137] close(10) = -1 EBADF (Bad file descriptor) [pid 5137] close(11) = -1 EBADF (Bad file descriptor) [pid 5137] close(12) = -1 EBADF (Bad file descriptor) [pid 5137] close(13) = -1 EBADF (Bad file descriptor) [pid 5137] close(14) = -1 EBADF (Bad file descriptor) [pid 5137] close(15) = -1 EBADF (Bad file descriptor) [pid 5137] close(16) = -1 EBADF (Bad file descriptor) [pid 5137] close(17) = -1 EBADF (Bad file descriptor) [pid 5137] close(18) = -1 EBADF (Bad file descriptor) [pid 5137] close(19) = -1 EBADF (Bad file descriptor) [pid 5137] close(20) = -1 EBADF (Bad file descriptor) [pid 5137] close(21) = -1 EBADF (Bad file descriptor) [pid 5137] close(22) = -1 EBADF (Bad file descriptor) [pid 5137] close(23) = -1 EBADF (Bad file descriptor) [pid 5137] close(24) = -1 EBADF (Bad file descriptor) [pid 5137] close(25) = -1 EBADF (Bad file descriptor) [pid 5137] close(26) = -1 EBADF (Bad file descriptor) [pid 5137] close(27) = -1 EBADF (Bad file descriptor) [pid 5137] close(28) = -1 EBADF (Bad file descriptor) [pid 5137] close(29) = -1 EBADF (Bad file descriptor) [pid 5137] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=68, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5138] exit(0) = ? [pid 5064] umount2("./33/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./33/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5138] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=69, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./33/cgroup.cpu") = 0 [pid 5064] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./33/binderfs") = 0 [pid 5064] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./33/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./33/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./33/file0") = 0 [pid 5064] umount2("./33/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./33/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./33/cgroup") = 0 [pid 5064] umount2("./33/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./33/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./33/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./33") = 0 [pid 5064] mkdir("./34", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5139 attached , child_tidptr=0x555555a8a650) = 70 [pid 5139] set_robust_list(0x555555a8a660, 24) = 0 [pid 5139] chdir("./34") = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5139] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5139] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5139] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5139] mkdir("./file0", 000) = 0 [pid 5139] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5139] open("./file0", O_RDONLY) = 3 [pid 5139] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5139] write(4, "-pids ", 6) = 6 [pid 5139] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5139] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5140 attached ) = 71 [pid 5139] ptrace(PTRACE_ATTACH, 71) = -1 EPERM (Operation not permitted) [pid 5139] close(3) = 0 [pid 5139] close(4) = 0 [pid 5139] close(5) = -1 EBADF (Bad file descriptor) [pid 5139] close(6) = -1 EBADF (Bad file descriptor) [pid 5139] close(7) = -1 EBADF (Bad file descriptor) [pid 5139] close(8) = -1 EBADF (Bad file descriptor) [pid 5139] close(9) = -1 EBADF (Bad file descriptor) [pid 5139] close(10) = -1 EBADF (Bad file descriptor) [pid 5139] close(11) = -1 EBADF (Bad file descriptor) [pid 5139] close(12) = -1 EBADF (Bad file descriptor) [pid 5139] close(13) = -1 EBADF (Bad file descriptor) [pid 5139] close(14) = -1 EBADF (Bad file descriptor) [pid 5139] close(15) = -1 EBADF (Bad file descriptor) [pid 5139] close(16) = -1 EBADF (Bad file descriptor) [pid 5139] close(17) = -1 EBADF (Bad file descriptor) [pid 5139] close(18) = -1 EBADF (Bad file descriptor) [pid 5139] close(19) = -1 EBADF (Bad file descriptor) [pid 5139] close(20) = -1 EBADF (Bad file descriptor) [pid 5139] close(21) = -1 EBADF (Bad file descriptor) [pid 5139] close(22) = -1 EBADF (Bad file descriptor) [pid 5139] close(23) = -1 EBADF (Bad file descriptor) [pid 5139] close(24) = -1 EBADF (Bad file descriptor) [pid 5139] close(25) = -1 EBADF (Bad file descriptor) [pid 5139] close(26) = -1 EBADF (Bad file descriptor) [pid 5139] close(27) = -1 EBADF (Bad file descriptor) [pid 5139] close(28) = -1 EBADF (Bad file descriptor) [pid 5139] close(29) = -1 EBADF (Bad file descriptor) [pid 5139] exit_group(0) = ? [pid 5139] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=70, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./34/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./34/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./34/cgroup.cpu") = 0 [pid 5064] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./34/binderfs") = 0 [pid 5064] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5140] exit(0 [pid 5064] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5140] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./34/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5140] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=71, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] openat(AT_FDCWD, "./34/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./34/file0") = 0 [pid 5064] umount2("./34/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./34/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./34/cgroup") = 0 [pid 5064] umount2("./34/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./34/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./34/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./34") = 0 [pid 5064] mkdir("./35", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5141 attached , child_tidptr=0x555555a8a650) = 72 [pid 5141] set_robust_list(0x555555a8a660, 24) = 0 [pid 5141] chdir("./35") = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5141] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5141] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5141] mkdir("./file0", 000) = 0 [pid 5141] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5141] open("./file0", O_RDONLY) = 3 [pid 5141] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5141] write(4, "-pids ", 6) = 6 [pid 5141] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5141] clone(child_stack=NULL, flags=SIGCHLD) = 73 ./strace-static-x86_64: Process 5142 attached [pid 5141] ptrace(PTRACE_ATTACH, 73) = -1 EPERM (Operation not permitted) [pid 5141] close(3) = 0 [pid 5141] close(4) = 0 [pid 5141] close(5) = -1 EBADF (Bad file descriptor) [pid 5141] close(6) = -1 EBADF (Bad file descriptor) [pid 5141] close(7) = -1 EBADF (Bad file descriptor) [pid 5141] close(8) = -1 EBADF (Bad file descriptor) [pid 5141] close(9) = -1 EBADF (Bad file descriptor) [pid 5141] close(10) = -1 EBADF (Bad file descriptor) [pid 5141] close(11) = -1 EBADF (Bad file descriptor) [pid 5141] close(12) = -1 EBADF (Bad file descriptor) [pid 5141] close(13) = -1 EBADF (Bad file descriptor) [pid 5141] close(14) = -1 EBADF (Bad file descriptor) [pid 5141] close(15) = -1 EBADF (Bad file descriptor) [pid 5141] close(16) = -1 EBADF (Bad file descriptor) [pid 5141] close(17) = -1 EBADF (Bad file descriptor) [pid 5141] close(18) = -1 EBADF (Bad file descriptor) [pid 5141] close(19) = -1 EBADF (Bad file descriptor) [pid 5141] close(20) = -1 EBADF (Bad file descriptor) [pid 5141] close(21) = -1 EBADF (Bad file descriptor) [pid 5141] close(22) = -1 EBADF (Bad file descriptor) [pid 5141] close(23) = -1 EBADF (Bad file descriptor) [pid 5141] close(24) = -1 EBADF (Bad file descriptor) [pid 5141] close(25) = -1 EBADF (Bad file descriptor) [pid 5141] close(26) = -1 EBADF (Bad file descriptor) [pid 5141] close(27) = -1 EBADF (Bad file descriptor) [pid 5141] close(28) = -1 EBADF (Bad file descriptor) [pid 5141] close(29) = -1 EBADF (Bad file descriptor) [pid 5141] exit_group(0) = ? [pid 5141] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=72, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./35/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./35/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./35/cgroup.cpu" [pid 5142] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5142] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=73, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./35/binderfs") = 0 [pid 5064] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./35/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./35/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./35/file0") = 0 [pid 5064] umount2("./35/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./35/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./35/cgroup") = 0 [pid 5064] umount2("./35/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./35/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./35/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./35") = 0 [pid 5064] mkdir("./36", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5143 attached , child_tidptr=0x555555a8a650) = 74 [pid 5143] set_robust_list(0x555555a8a660, 24) = 0 [pid 5143] chdir("./36") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5143] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5143] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5143] write(3, "1000", 4) = 4 [pid 5143] close(3) = 0 [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] mkdir("./file0", 000) = 0 [pid 5143] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5143] open("./file0", O_RDONLY) = 3 [pid 5143] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5143] write(4, "-pids ", 6) = 6 [pid 5143] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5143] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5144 attached ) = 75 [pid 5143] ptrace(PTRACE_ATTACH, 75) = -1 EPERM (Operation not permitted) [pid 5143] close(3) = 0 [pid 5143] close(4) = 0 [pid 5143] close(5) = -1 EBADF (Bad file descriptor) [pid 5143] close(6) = -1 EBADF (Bad file descriptor) [pid 5143] close(7) = -1 EBADF (Bad file descriptor) [pid 5143] close(8) = -1 EBADF (Bad file descriptor) [pid 5143] close(9) = -1 EBADF (Bad file descriptor) [pid 5143] close(10) = -1 EBADF (Bad file descriptor) [pid 5143] close(11) = -1 EBADF (Bad file descriptor) [pid 5143] close(12) = -1 EBADF (Bad file descriptor) [pid 5143] close(13) = -1 EBADF (Bad file descriptor) [pid 5143] close(14) = -1 EBADF (Bad file descriptor) [pid 5143] close(15) = -1 EBADF (Bad file descriptor) [pid 5143] close(16) = -1 EBADF (Bad file descriptor) [pid 5143] close(17) = -1 EBADF (Bad file descriptor) [pid 5143] close(18) = -1 EBADF (Bad file descriptor) [pid 5143] close(19) = -1 EBADF (Bad file descriptor) [pid 5143] close(20) = -1 EBADF (Bad file descriptor) [pid 5143] close(21) = -1 EBADF (Bad file descriptor) [pid 5143] close(22) = -1 EBADF (Bad file descriptor) [pid 5143] close(23) = -1 EBADF (Bad file descriptor) [pid 5143] close(24) = -1 EBADF (Bad file descriptor) [pid 5143] close(25) = -1 EBADF (Bad file descriptor) [pid 5143] close(26) = -1 EBADF (Bad file descriptor) [pid 5143] close(27) = -1 EBADF (Bad file descriptor) [pid 5143] close(28) = -1 EBADF (Bad file descriptor) [pid 5143] close(29) = -1 EBADF (Bad file descriptor) [pid 5143] exit_group(0) = ? [pid 5143] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=74, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./36/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./36/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./36/cgroup.cpu" [pid 5144] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5144] <... exit resumed>) = ? [pid 5064] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./36/binderfs", [pid 5144] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=75, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./36/binderfs") = 0 [pid 5064] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./36/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./36/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./36/file0") = 0 [pid 5064] umount2("./36/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./36/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./36/cgroup") = 0 [pid 5064] umount2("./36/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./36/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./36/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./36") = 0 [pid 5064] mkdir("./37", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5145 attached , child_tidptr=0x555555a8a650) = 76 [pid 5145] set_robust_list(0x555555a8a660, 24) = 0 [pid 5145] chdir("./37") = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5145] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5145] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5145] write(3, "1000", 4) = 4 [pid 5145] close(3) = 0 [pid 5145] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5145] mkdir("./file0", 000) = 0 [pid 5145] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5145] open("./file0", O_RDONLY) = 3 [pid 5145] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5145] write(4, "-pids ", 6) = 6 [pid 5145] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5145] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5146 attached ) = 77 [pid 5145] ptrace(PTRACE_ATTACH, 77) = -1 EPERM (Operation not permitted) [pid 5145] close(3) = 0 [pid 5145] close(4) = 0 [pid 5145] close(5) = -1 EBADF (Bad file descriptor) [pid 5145] close(6) = -1 EBADF (Bad file descriptor) [pid 5145] close(7) = -1 EBADF (Bad file descriptor) [pid 5145] close(8) = -1 EBADF (Bad file descriptor) [pid 5145] close(9) = -1 EBADF (Bad file descriptor) [pid 5145] close(10) = -1 EBADF (Bad file descriptor) [pid 5145] close(11) = -1 EBADF (Bad file descriptor) [pid 5145] close(12) = -1 EBADF (Bad file descriptor) [pid 5145] close(13) = -1 EBADF (Bad file descriptor) [pid 5145] close(14) = -1 EBADF (Bad file descriptor) [pid 5145] close(15) = -1 EBADF (Bad file descriptor) [pid 5145] close(16) = -1 EBADF (Bad file descriptor) [pid 5145] close(17) = -1 EBADF (Bad file descriptor) [pid 5145] close(18) = -1 EBADF (Bad file descriptor) [pid 5145] close(19) = -1 EBADF (Bad file descriptor) [pid 5145] close(20) = -1 EBADF (Bad file descriptor) [pid 5145] close(21) = -1 EBADF (Bad file descriptor) [pid 5145] close(22) = -1 EBADF (Bad file descriptor) [pid 5145] close(23) = -1 EBADF (Bad file descriptor) [pid 5145] close(24) = -1 EBADF (Bad file descriptor) [pid 5145] close(25) = -1 EBADF (Bad file descriptor) [pid 5145] close(26) = -1 EBADF (Bad file descriptor) [pid 5145] close(27) = -1 EBADF (Bad file descriptor) [pid 5145] close(28) = -1 EBADF (Bad file descriptor) [pid 5145] close(29) = -1 EBADF (Bad file descriptor) [pid 5145] exit_group(0) = ? [pid 5145] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=76, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5146] exit(0) = ? [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5146] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=77, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./37/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./37/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./37/cgroup.cpu") = 0 [pid 5064] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./37/binderfs") = 0 [pid 5064] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./37/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./37/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./37/file0") = 0 [pid 5064] umount2("./37/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./37/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./37/cgroup") = 0 [pid 5064] umount2("./37/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./37/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./37/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./37") = 0 [pid 5064] mkdir("./38", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5147 attached , child_tidptr=0x555555a8a650) = 78 [pid 5147] set_robust_list(0x555555a8a660, 24) = 0 [pid 5147] chdir("./38") = 0 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5147] setpgid(0, 0) = 0 [pid 5147] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5147] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5147] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5147] mkdir("./file0", 000) = 0 [pid 5147] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5147] open("./file0", O_RDONLY) = 3 [pid 5147] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5147] write(4, "-pids ", 6) = 6 [pid 5147] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5147] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5148 attached ) = 79 [pid 5147] ptrace(PTRACE_ATTACH, 79) = -1 EPERM (Operation not permitted) [pid 5147] close(3) = 0 [pid 5147] close(4) = 0 [pid 5147] close(5) = -1 EBADF (Bad file descriptor) [pid 5147] close(6) = -1 EBADF (Bad file descriptor) [pid 5147] close(7) = -1 EBADF (Bad file descriptor) [pid 5147] close(8) = -1 EBADF (Bad file descriptor) [pid 5147] close(9) = -1 EBADF (Bad file descriptor) [pid 5147] close(10) = -1 EBADF (Bad file descriptor) [pid 5147] close(11) = -1 EBADF (Bad file descriptor) [pid 5147] close(12) = -1 EBADF (Bad file descriptor) [pid 5147] close(13) = -1 EBADF (Bad file descriptor) [pid 5147] close(14) = -1 EBADF (Bad file descriptor) [pid 5147] close(15) = -1 EBADF (Bad file descriptor) [pid 5147] close(16) = -1 EBADF (Bad file descriptor) [pid 5147] close(17) = -1 EBADF (Bad file descriptor) [pid 5147] close(18) = -1 EBADF (Bad file descriptor) [pid 5147] close(19) = -1 EBADF (Bad file descriptor) [pid 5147] close(20) = -1 EBADF (Bad file descriptor) [pid 5147] close(21) = -1 EBADF (Bad file descriptor) [pid 5147] close(22) = -1 EBADF (Bad file descriptor) [pid 5147] close(23) = -1 EBADF (Bad file descriptor) [pid 5147] close(24) = -1 EBADF (Bad file descriptor) [pid 5147] close(25) = -1 EBADF (Bad file descriptor) [pid 5147] close(26) = -1 EBADF (Bad file descriptor) [pid 5147] close(27) = -1 EBADF (Bad file descriptor) [pid 5147] close(28) = -1 EBADF (Bad file descriptor) [pid 5147] close(29) = -1 EBADF (Bad file descriptor) [pid 5147] exit_group(0) = ? [pid 5147] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=78, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5148] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./38/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5148] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./38/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./38/cgroup.cpu") = 0 [pid 5064] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5148] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=79, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./38/binderfs") = 0 [pid 5064] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./38/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./38/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./38/file0") = 0 [pid 5064] umount2("./38/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./38/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./38/cgroup") = 0 [pid 5064] umount2("./38/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./38/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./38/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./38") = 0 [pid 5064] mkdir("./39", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5150 attached , child_tidptr=0x555555a8a650) = 80 [pid 5150] set_robust_list(0x555555a8a660, 24) = 0 [pid 5150] chdir("./39") = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5150] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5150] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5150] mkdir("./file0", 000) = 0 [pid 5150] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5150] open("./file0", O_RDONLY) = 3 [pid 5150] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5150] write(4, "-pids ", 6) = 6 [pid 5150] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5150] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5151 attached ) = 81 [pid 5150] ptrace(PTRACE_ATTACH, 81) = -1 EPERM (Operation not permitted) [pid 5150] close(3) = 0 [pid 5150] close(4) = 0 [pid 5150] close(5) = -1 EBADF (Bad file descriptor) [pid 5150] close(6) = -1 EBADF (Bad file descriptor) [pid 5150] close(7) = -1 EBADF (Bad file descriptor) [pid 5150] close(8) = -1 EBADF (Bad file descriptor) [pid 5150] close(9) = -1 EBADF (Bad file descriptor) [pid 5150] close(10) = -1 EBADF (Bad file descriptor) [pid 5150] close(11) = -1 EBADF (Bad file descriptor) [pid 5150] close(12) = -1 EBADF (Bad file descriptor) [pid 5150] close(13) = -1 EBADF (Bad file descriptor) [pid 5150] close(14) = -1 EBADF (Bad file descriptor) [pid 5150] close(15) = -1 EBADF (Bad file descriptor) [pid 5150] close(16) = -1 EBADF (Bad file descriptor) [pid 5150] close(17) = -1 EBADF (Bad file descriptor) [pid 5150] close(18) = -1 EBADF (Bad file descriptor) [pid 5150] close(19) = -1 EBADF (Bad file descriptor) [pid 5150] close(20) = -1 EBADF (Bad file descriptor) [pid 5150] close(21) = -1 EBADF (Bad file descriptor) [pid 5150] close(22) = -1 EBADF (Bad file descriptor) [pid 5150] close(23) = -1 EBADF (Bad file descriptor) [pid 5150] close(24) = -1 EBADF (Bad file descriptor) [pid 5150] close(25) = -1 EBADF (Bad file descriptor) [pid 5150] close(26) = -1 EBADF (Bad file descriptor) [pid 5150] close(27) = -1 EBADF (Bad file descriptor) [pid 5150] close(28) = -1 EBADF (Bad file descriptor) [pid 5150] close(29) = -1 EBADF (Bad file descriptor) [pid 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=80, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./39/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./39/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./39/cgroup.cpu") = 0 [pid 5064] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./39/binderfs") = 0 [pid 5064] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./39/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5151] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5151] <... exit resumed>) = ? [pid 5064] openat(AT_FDCWD, "./39/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5151] +++ exited with 0 +++ [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=81, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./39/file0") = 0 [pid 5064] umount2("./39/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./39/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./39/cgroup") = 0 [pid 5064] umount2("./39/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./39/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./39/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./39") = 0 [pid 5064] mkdir("./40", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5152 attached , child_tidptr=0x555555a8a650) = 82 [pid 5152] set_robust_list(0x555555a8a660, 24) = 0 [pid 5152] chdir("./40") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 0 [pid 5152] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5152] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5152] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5152] mkdir("./file0", 000) = 0 [pid 5152] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5152] open("./file0", O_RDONLY) = 3 [pid 5152] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5152] write(4, "-pids ", 6) = 6 [pid 5152] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5152] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5153 attached ) = 83 [pid 5152] ptrace(PTRACE_ATTACH, 83) = -1 EPERM (Operation not permitted) [pid 5152] close(3) = 0 [pid 5152] close(4) = 0 [pid 5152] close(5) = -1 EBADF (Bad file descriptor) [pid 5152] close(6) = -1 EBADF (Bad file descriptor) [pid 5152] close(7) = -1 EBADF (Bad file descriptor) [pid 5152] close(8) = -1 EBADF (Bad file descriptor) [pid 5152] close(9) = -1 EBADF (Bad file descriptor) [pid 5152] close(10) = -1 EBADF (Bad file descriptor) [pid 5152] close(11) = -1 EBADF (Bad file descriptor) [pid 5152] close(12) = -1 EBADF (Bad file descriptor) [pid 5152] close(13) = -1 EBADF (Bad file descriptor) [pid 5152] close(14) = -1 EBADF (Bad file descriptor) [pid 5152] close(15) = -1 EBADF (Bad file descriptor) [pid 5152] close(16) = -1 EBADF (Bad file descriptor) [pid 5152] close(17) = -1 EBADF (Bad file descriptor) [pid 5152] close(18) = -1 EBADF (Bad file descriptor) [pid 5152] close(19) = -1 EBADF (Bad file descriptor) [pid 5152] close(20) = -1 EBADF (Bad file descriptor) [pid 5152] close(21) = -1 EBADF (Bad file descriptor) [pid 5152] close(22) = -1 EBADF (Bad file descriptor) [pid 5152] close(23) = -1 EBADF (Bad file descriptor) [pid 5152] close(24) = -1 EBADF (Bad file descriptor) [pid 5152] close(25) = -1 EBADF (Bad file descriptor) [pid 5152] close(26) = -1 EBADF (Bad file descriptor) [pid 5152] close(27) = -1 EBADF (Bad file descriptor) [pid 5152] close(28) = -1 EBADF (Bad file descriptor) [pid 5152] close(29) = -1 EBADF (Bad file descriptor) [pid 5152] exit_group(0) = ? [pid 5152] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=82, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./40/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./40/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./40/cgroup.cpu") = 0 [pid 5064] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./40/binderfs") = 0 [pid 5064] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./40/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./40/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./40/file0" [pid 5153] exit(0) = ? [pid 5064] <... rmdir resumed>) = 0 [pid 5064] umount2("./40/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5153] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./40/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=83, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./40/cgroup") = 0 [pid 5064] umount2("./40/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./40/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./40/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./40") = 0 [pid 5064] mkdir("./41", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5154 attached , child_tidptr=0x555555a8a650) = 84 [pid 5154] set_robust_list(0x555555a8a660, 24) = 0 [pid 5154] chdir("./41") = 0 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5154] setpgid(0, 0) = 0 [pid 5154] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5154] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5154] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5154] write(3, "1000", 4) = 4 [pid 5154] close(3) = 0 [pid 5154] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5154] mkdir("./file0", 000) = 0 [pid 5154] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5154] open("./file0", O_RDONLY) = 3 [pid 5154] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5154] write(4, "-pids ", 6) = 6 [pid 5154] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5154] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5155 attached ) = 85 [pid 5154] ptrace(PTRACE_ATTACH, 85) = -1 EPERM (Operation not permitted) [pid 5154] close(3) = 0 [pid 5154] close(4) = 0 [pid 5154] close(5) = -1 EBADF (Bad file descriptor) [pid 5154] close(6) = -1 EBADF (Bad file descriptor) [pid 5154] close(7) = -1 EBADF (Bad file descriptor) [pid 5154] close(8) = -1 EBADF (Bad file descriptor) [pid 5154] close(9) = -1 EBADF (Bad file descriptor) [pid 5154] close(10) = -1 EBADF (Bad file descriptor) [pid 5154] close(11) = -1 EBADF (Bad file descriptor) [pid 5154] close(12) = -1 EBADF (Bad file descriptor) [pid 5154] close(13) = -1 EBADF (Bad file descriptor) [pid 5154] close(14) = -1 EBADF (Bad file descriptor) [pid 5154] close(15) = -1 EBADF (Bad file descriptor) [pid 5154] close(16) = -1 EBADF (Bad file descriptor) [pid 5154] close(17) = -1 EBADF (Bad file descriptor) [pid 5154] close(18) = -1 EBADF (Bad file descriptor) [pid 5154] close(19) = -1 EBADF (Bad file descriptor) [pid 5154] close(20) = -1 EBADF (Bad file descriptor) [pid 5154] close(21) = -1 EBADF (Bad file descriptor) [pid 5154] close(22) = -1 EBADF (Bad file descriptor) [pid 5154] close(23) = -1 EBADF (Bad file descriptor) [pid 5154] close(24) = -1 EBADF (Bad file descriptor) [pid 5154] close(25) = -1 EBADF (Bad file descriptor) [pid 5154] close(26) = -1 EBADF (Bad file descriptor) [pid 5154] close(27) = -1 EBADF (Bad file descriptor) [pid 5154] close(28) = -1 EBADF (Bad file descriptor) [pid 5154] close(29) = -1 EBADF (Bad file descriptor) [pid 5154] exit_group(0) = ? [pid 5154] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=84, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5155] exit(0 [pid 5064] umount2("./41/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5155] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./41/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./41/cgroup.cpu" [pid 5155] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=85, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./41/binderfs") = 0 [pid 5064] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./41/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./41/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./41/file0") = 0 [pid 5064] umount2("./41/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./41/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./41/cgroup") = 0 [pid 5064] umount2("./41/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./41/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./41/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./41") = 0 [pid 5064] mkdir("./42", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5156 attached , child_tidptr=0x555555a8a650) = 86 [pid 5156] set_robust_list(0x555555a8a660, 24) = 0 [pid 5156] chdir("./42") = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5156] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5156] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5156] mkdir("./file0", 000) = 0 [pid 5156] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5156] open("./file0", O_RDONLY) = 3 [pid 5156] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5156] write(4, "-pids ", 6) = 6 [pid 5156] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5156] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5157 attached ) = 87 [pid 5156] ptrace(PTRACE_ATTACH, 87) = -1 EPERM (Operation not permitted) [pid 5156] close(3) = 0 [pid 5156] close(4) = 0 [pid 5156] close(5) = -1 EBADF (Bad file descriptor) [pid 5156] close(6) = -1 EBADF (Bad file descriptor) [pid 5156] close(7) = -1 EBADF (Bad file descriptor) [pid 5156] close(8) = -1 EBADF (Bad file descriptor) [pid 5156] close(9) = -1 EBADF (Bad file descriptor) [pid 5156] close(10) = -1 EBADF (Bad file descriptor) [pid 5156] close(11) = -1 EBADF (Bad file descriptor) [pid 5156] close(12) = -1 EBADF (Bad file descriptor) [pid 5156] close(13) = -1 EBADF (Bad file descriptor) [pid 5156] close(14) = -1 EBADF (Bad file descriptor) [pid 5156] close(15) = -1 EBADF (Bad file descriptor) [pid 5156] close(16) = -1 EBADF (Bad file descriptor) [pid 5156] close(17) = -1 EBADF (Bad file descriptor) [pid 5156] close(18) = -1 EBADF (Bad file descriptor) [pid 5156] close(19) = -1 EBADF (Bad file descriptor) [pid 5156] close(20) = -1 EBADF (Bad file descriptor) [pid 5156] close(21) = -1 EBADF (Bad file descriptor) [pid 5156] close(22) = -1 EBADF (Bad file descriptor) [pid 5156] close(23) = -1 EBADF (Bad file descriptor) [pid 5156] close(24) = -1 EBADF (Bad file descriptor) [pid 5156] close(25) = -1 EBADF (Bad file descriptor) [pid 5156] close(26) = -1 EBADF (Bad file descriptor) [pid 5156] close(27) = -1 EBADF (Bad file descriptor) [pid 5156] close(28) = -1 EBADF (Bad file descriptor) [pid 5156] close(29) = -1 EBADF (Bad file descriptor) [pid 5156] exit_group(0) = ? [pid 5156] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=86, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./42/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./42/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./42/cgroup.cpu") = 0 [pid 5064] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./42/binderfs") = 0 [pid 5064] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./42/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5157] exit(0 [pid 5064] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5157] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./42/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5157] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=87, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./42/file0") = 0 [pid 5064] umount2("./42/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./42/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./42/cgroup") = 0 [pid 5064] umount2("./42/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./42/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./42/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./42") = 0 [pid 5064] mkdir("./43", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 88 ./strace-static-x86_64: Process 5158 attached [pid 5158] set_robust_list(0x555555a8a660, 24) = 0 [pid 5158] chdir("./43") = 0 [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5158] setpgid(0, 0) = 0 [pid 5158] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5158] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5158] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5158] write(3, "1000", 4) = 4 [pid 5158] close(3) = 0 [pid 5158] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5158] mkdir("./file0", 000) = 0 [pid 5158] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5158] open("./file0", O_RDONLY) = 3 [pid 5158] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5158] write(4, "-pids ", 6) = 6 [pid 5158] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5158] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5159 attached ) = 89 [pid 5158] ptrace(PTRACE_ATTACH, 89) = -1 EPERM (Operation not permitted) [pid 5158] close(3) = 0 [pid 5158] close(4) = 0 [pid 5158] close(5) = -1 EBADF (Bad file descriptor) [pid 5158] close(6) = -1 EBADF (Bad file descriptor) [pid 5158] close(7) = -1 EBADF (Bad file descriptor) [pid 5158] close(8) = -1 EBADF (Bad file descriptor) [pid 5158] close(9) = -1 EBADF (Bad file descriptor) [pid 5158] close(10) = -1 EBADF (Bad file descriptor) [pid 5158] close(11) = -1 EBADF (Bad file descriptor) [pid 5158] close(12) = -1 EBADF (Bad file descriptor) [pid 5158] close(13) = -1 EBADF (Bad file descriptor) [pid 5158] close(14) = -1 EBADF (Bad file descriptor) [pid 5158] close(15) = -1 EBADF (Bad file descriptor) [pid 5158] close(16) = -1 EBADF (Bad file descriptor) [pid 5158] close(17) = -1 EBADF (Bad file descriptor) [pid 5158] close(18) = -1 EBADF (Bad file descriptor) [pid 5158] close(19) = -1 EBADF (Bad file descriptor) [pid 5158] close(20) = -1 EBADF (Bad file descriptor) [pid 5158] close(21) = -1 EBADF (Bad file descriptor) [pid 5158] close(22) = -1 EBADF (Bad file descriptor) [pid 5158] close(23) = -1 EBADF (Bad file descriptor) [pid 5158] close(24) = -1 EBADF (Bad file descriptor) [pid 5158] close(25) = -1 EBADF (Bad file descriptor) [pid 5158] close(26) = -1 EBADF (Bad file descriptor) [pid 5158] close(27) = -1 EBADF (Bad file descriptor) [pid 5158] close(28) = -1 EBADF (Bad file descriptor) [pid 5158] close(29) = -1 EBADF (Bad file descriptor) [pid 5158] exit_group(0) = ? [pid 5158] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=88, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5159] exit(0 [pid 5064] getdents64(3, [pid 5159] <... exit resumed>) = ? [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./43/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./43/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5159] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=89, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./43/cgroup.cpu") = 0 [pid 5064] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./43/binderfs") = 0 [pid 5064] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./43/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./43/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./43/file0") = 0 [pid 5064] umount2("./43/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./43/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./43/cgroup") = 0 [pid 5064] umount2("./43/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./43/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./43/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./43") = 0 [pid 5064] mkdir("./44", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5160 attached , child_tidptr=0x555555a8a650) = 90 [pid 5160] set_robust_list(0x555555a8a660, 24) = 0 [pid 5160] chdir("./44") = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5160] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5160] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5160] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5160] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5160] mkdir("./file0", 000) = 0 [pid 5160] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5160] open("./file0", O_RDONLY) = 3 [pid 5160] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5160] write(4, "-pids ", 6) = 6 [pid 5160] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5160] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5161 attached ) = 91 [pid 5160] ptrace(PTRACE_ATTACH, 91) = -1 EPERM (Operation not permitted) [pid 5160] close(3) = 0 [pid 5160] close(4) = 0 [pid 5160] close(5) = -1 EBADF (Bad file descriptor) [pid 5160] close(6) = -1 EBADF (Bad file descriptor) [pid 5160] close(7) = -1 EBADF (Bad file descriptor) [pid 5160] close(8) = -1 EBADF (Bad file descriptor) [pid 5160] close(9) = -1 EBADF (Bad file descriptor) [pid 5160] close(10) = -1 EBADF (Bad file descriptor) [pid 5160] close(11) = -1 EBADF (Bad file descriptor) [pid 5160] close(12) = -1 EBADF (Bad file descriptor) [pid 5160] close(13) = -1 EBADF (Bad file descriptor) [pid 5160] close(14) = -1 EBADF (Bad file descriptor) [pid 5160] close(15) = -1 EBADF (Bad file descriptor) [pid 5160] close(16) = -1 EBADF (Bad file descriptor) [pid 5160] close(17) = -1 EBADF (Bad file descriptor) [pid 5160] close(18) = -1 EBADF (Bad file descriptor) [pid 5160] close(19) = -1 EBADF (Bad file descriptor) [pid 5160] close(20) = -1 EBADF (Bad file descriptor) [pid 5160] close(21) = -1 EBADF (Bad file descriptor) [pid 5160] close(22) = -1 EBADF (Bad file descriptor) [pid 5160] close(23) = -1 EBADF (Bad file descriptor) [pid 5160] close(24) = -1 EBADF (Bad file descriptor) [pid 5160] close(25) = -1 EBADF (Bad file descriptor) [pid 5160] close(26) = -1 EBADF (Bad file descriptor) [pid 5160] close(27) = -1 EBADF (Bad file descriptor) [pid 5160] close(28) = -1 EBADF (Bad file descriptor) [pid 5160] close(29) = -1 EBADF (Bad file descriptor) [pid 5160] exit_group(0) = ? [pid 5160] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=90, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./44/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./44/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./44/cgroup.cpu") = 0 [pid 5064] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5161] exit(0) = ? [pid 5064] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./44/binderfs" [pid 5161] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=91, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./44/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./44/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./44/file0") = 0 [pid 5064] umount2("./44/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./44/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./44/cgroup") = 0 [pid 5064] umount2("./44/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./44/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./44/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./44") = 0 [pid 5064] mkdir("./45", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5162 attached , child_tidptr=0x555555a8a650) = 92 [pid 5162] set_robust_list(0x555555a8a660, 24) = 0 [pid 5162] chdir("./45") = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5162] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5162] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] mkdir("./file0", 000) = 0 [pid 5162] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5162] open("./file0", O_RDONLY) = 3 [pid 5162] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5162] write(4, "-pids ", 6) = 6 [pid 5162] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5162] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5163 attached ) = 93 [pid 5162] ptrace(PTRACE_ATTACH, 93) = -1 EPERM (Operation not permitted) [pid 5162] close(3) = 0 [pid 5162] close(4) = 0 [pid 5162] close(5) = -1 EBADF (Bad file descriptor) [pid 5162] close(6) = -1 EBADF (Bad file descriptor) [pid 5162] close(7) = -1 EBADF (Bad file descriptor) [pid 5162] close(8) = -1 EBADF (Bad file descriptor) [pid 5162] close(9) = -1 EBADF (Bad file descriptor) [pid 5162] close(10) = -1 EBADF (Bad file descriptor) [pid 5162] close(11) = -1 EBADF (Bad file descriptor) [pid 5162] close(12) = -1 EBADF (Bad file descriptor) [pid 5162] close(13) = -1 EBADF (Bad file descriptor) [pid 5162] close(14) = -1 EBADF (Bad file descriptor) [pid 5162] close(15) = -1 EBADF (Bad file descriptor) [pid 5162] close(16) = -1 EBADF (Bad file descriptor) [pid 5162] close(17) = -1 EBADF (Bad file descriptor) [pid 5162] close(18) = -1 EBADF (Bad file descriptor) [pid 5162] close(19) = -1 EBADF (Bad file descriptor) [pid 5162] close(20) = -1 EBADF (Bad file descriptor) [pid 5162] close(21) = -1 EBADF (Bad file descriptor) [pid 5162] close(22) = -1 EBADF (Bad file descriptor) [pid 5162] close(23) = -1 EBADF (Bad file descriptor) [pid 5162] close(24) = -1 EBADF (Bad file descriptor) [pid 5162] close(25) = -1 EBADF (Bad file descriptor) [pid 5162] close(26) = -1 EBADF (Bad file descriptor) [pid 5162] close(27) = -1 EBADF (Bad file descriptor) [pid 5162] close(28) = -1 EBADF (Bad file descriptor) [pid 5162] close(29) = -1 EBADF (Bad file descriptor) [pid 5162] exit_group(0) = ? [pid 5162] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=92, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./45/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5163] exit(0) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./45/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5163] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=93, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./45/cgroup.cpu") = 0 [pid 5064] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./45/binderfs") = 0 [pid 5064] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./45/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./45/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./45/file0") = 0 [pid 5064] umount2("./45/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./45/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./45/cgroup") = 0 [pid 5064] umount2("./45/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./45/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./45/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./45") = 0 [pid 5064] mkdir("./46", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5165 attached , child_tidptr=0x555555a8a650) = 94 [pid 5165] set_robust_list(0x555555a8a660, 24) = 0 [pid 5165] chdir("./46") = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5165] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5165] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5165] write(3, "1000", 4) = 4 [pid 5165] close(3) = 0 [pid 5165] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5165] mkdir("./file0", 000) = 0 [pid 5165] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5165] open("./file0", O_RDONLY) = 3 [pid 5165] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5165] write(4, "-pids ", 6) = 6 [pid 5165] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5165] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5166 attached ) = 95 [pid 5165] ptrace(PTRACE_ATTACH, 95) = -1 EPERM (Operation not permitted) [pid 5165] close(3) = 0 [pid 5165] close(4) = 0 [pid 5165] close(5) = -1 EBADF (Bad file descriptor) [pid 5165] close(6) = -1 EBADF (Bad file descriptor) [pid 5165] close(7) = -1 EBADF (Bad file descriptor) [pid 5165] close(8) = -1 EBADF (Bad file descriptor) [pid 5165] close(9) = -1 EBADF (Bad file descriptor) [pid 5165] close(10) = -1 EBADF (Bad file descriptor) [pid 5165] close(11) = -1 EBADF (Bad file descriptor) [pid 5165] close(12) = -1 EBADF (Bad file descriptor) [pid 5165] close(13) = -1 EBADF (Bad file descriptor) [pid 5165] close(14) = -1 EBADF (Bad file descriptor) [pid 5165] close(15) = -1 EBADF (Bad file descriptor) [pid 5165] close(16) = -1 EBADF (Bad file descriptor) [pid 5165] close(17) = -1 EBADF (Bad file descriptor) [pid 5165] close(18) = -1 EBADF (Bad file descriptor) [pid 5165] close(19) = -1 EBADF (Bad file descriptor) [pid 5165] close(20) = -1 EBADF (Bad file descriptor) [pid 5165] close(21) = -1 EBADF (Bad file descriptor) [pid 5165] close(22) = -1 EBADF (Bad file descriptor) [pid 5165] close(23) = -1 EBADF (Bad file descriptor) [pid 5165] close(24) = -1 EBADF (Bad file descriptor) [pid 5165] close(25) = -1 EBADF (Bad file descriptor) [pid 5165] close(26) = -1 EBADF (Bad file descriptor) [pid 5165] close(27) = -1 EBADF (Bad file descriptor) [pid 5165] close(28) = -1 EBADF (Bad file descriptor) [pid 5165] close(29) = -1 EBADF (Bad file descriptor) [pid 5165] exit_group(0) = ? [pid 5165] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=94, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./46/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./46/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./46/cgroup.cpu") = 0 [pid 5064] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./46/binderfs" [pid 5166] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5166] <... exit resumed>) = ? [pid 5064] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5166] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=95, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./46/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./46/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./46/file0") = 0 [pid 5064] umount2("./46/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./46/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./46/cgroup") = 0 [pid 5064] umount2("./46/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./46/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./46/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./46") = 0 [pid 5064] mkdir("./47", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5167 attached , child_tidptr=0x555555a8a650) = 96 [pid 5167] set_robust_list(0x555555a8a660, 24) = 0 [pid 5167] chdir("./47") = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 0 [pid 5167] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5167] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5167] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5167] write(3, "1000", 4) = 4 [pid 5167] close(3) = 0 [pid 5167] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5167] mkdir("./file0", 000) = 0 [pid 5167] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5167] open("./file0", O_RDONLY) = 3 [pid 5167] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5167] write(4, "-pids ", 6) = 6 [pid 5167] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5167] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5168 attached ) = 97 [pid 5167] ptrace(PTRACE_ATTACH, 97) = -1 EPERM (Operation not permitted) [pid 5167] close(3) = 0 [pid 5167] close(4) = 0 [pid 5167] close(5) = -1 EBADF (Bad file descriptor) [pid 5167] close(6) = -1 EBADF (Bad file descriptor) [pid 5167] close(7) = -1 EBADF (Bad file descriptor) [pid 5167] close(8) = -1 EBADF (Bad file descriptor) [pid 5167] close(9) = -1 EBADF (Bad file descriptor) [pid 5167] close(10) = -1 EBADF (Bad file descriptor) [pid 5167] close(11) = -1 EBADF (Bad file descriptor) [pid 5167] close(12) = -1 EBADF (Bad file descriptor) [pid 5167] close(13) = -1 EBADF (Bad file descriptor) [pid 5167] close(14) = -1 EBADF (Bad file descriptor) [pid 5167] close(15) = -1 EBADF (Bad file descriptor) [pid 5167] close(16) = -1 EBADF (Bad file descriptor) [pid 5167] close(17) = -1 EBADF (Bad file descriptor) [pid 5167] close(18) = -1 EBADF (Bad file descriptor) [pid 5167] close(19) = -1 EBADF (Bad file descriptor) [pid 5167] close(20) = -1 EBADF (Bad file descriptor) [pid 5167] close(21) = -1 EBADF (Bad file descriptor) [pid 5167] close(22) = -1 EBADF (Bad file descriptor) [pid 5167] close(23) = -1 EBADF (Bad file descriptor) [pid 5167] close(24) = -1 EBADF (Bad file descriptor) [pid 5167] close(25) = -1 EBADF (Bad file descriptor) [pid 5167] close(26) = -1 EBADF (Bad file descriptor) [pid 5167] close(27) = -1 EBADF (Bad file descriptor) [pid 5167] close(28) = -1 EBADF (Bad file descriptor) [pid 5167] close(29) = -1 EBADF (Bad file descriptor) [pid 5167] exit_group(0) = ? [pid 5167] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=96, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./47/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./47/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./47/cgroup.cpu" [pid 5168] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5168] <... exit resumed>) = ? [pid 5064] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5168] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=97, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./47/binderfs") = 0 [pid 5064] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./47/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./47/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./47/file0") = 0 [pid 5064] umount2("./47/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./47/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./47/cgroup") = 0 [pid 5064] umount2("./47/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./47/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./47/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./47") = 0 [pid 5064] mkdir("./48", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5169 attached , child_tidptr=0x555555a8a650) = 98 [pid 5169] set_robust_list(0x555555a8a660, 24) = 0 [pid 5169] chdir("./48") = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5169] setpgid(0, 0) = 0 [pid 5169] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5169] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5169] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5169] mkdir("./file0", 000) = 0 [pid 5169] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5169] open("./file0", O_RDONLY) = 3 [pid 5169] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5169] write(4, "-pids ", 6) = 6 [pid 5169] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5169] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5170 attached ) = 99 [pid 5169] ptrace(PTRACE_ATTACH, 99) = -1 EPERM (Operation not permitted) [pid 5169] close(3) = 0 [pid 5169] close(4) = 0 [pid 5169] close(5) = -1 EBADF (Bad file descriptor) [pid 5169] close(6) = -1 EBADF (Bad file descriptor) [pid 5169] close(7) = -1 EBADF (Bad file descriptor) [pid 5169] close(8) = -1 EBADF (Bad file descriptor) [pid 5169] close(9) = -1 EBADF (Bad file descriptor) [pid 5169] close(10) = -1 EBADF (Bad file descriptor) [pid 5169] close(11) = -1 EBADF (Bad file descriptor) [pid 5169] close(12) = -1 EBADF (Bad file descriptor) [pid 5169] close(13) = -1 EBADF (Bad file descriptor) [pid 5169] close(14) = -1 EBADF (Bad file descriptor) [pid 5169] close(15) = -1 EBADF (Bad file descriptor) [pid 5169] close(16) = -1 EBADF (Bad file descriptor) [pid 5169] close(17) = -1 EBADF (Bad file descriptor) [pid 5169] close(18) = -1 EBADF (Bad file descriptor) [pid 5169] close(19) = -1 EBADF (Bad file descriptor) [pid 5169] close(20) = -1 EBADF (Bad file descriptor) [pid 5169] close(21) = -1 EBADF (Bad file descriptor) [pid 5169] close(22) = -1 EBADF (Bad file descriptor) [pid 5169] close(23) = -1 EBADF (Bad file descriptor) [pid 5169] close(24) = -1 EBADF (Bad file descriptor) [pid 5169] close(25) = -1 EBADF (Bad file descriptor) [pid 5169] close(26) = -1 EBADF (Bad file descriptor) [pid 5169] close(27) = -1 EBADF (Bad file descriptor) [pid 5169] close(28) = -1 EBADF (Bad file descriptor) [pid 5169] close(29) = -1 EBADF (Bad file descriptor) [pid 5169] exit_group(0) = ? [pid 5169] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=98, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./48/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./48/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5170] exit(0) = ? [pid 5064] unlink("./48/cgroup.cpu") = 0 [pid 5064] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5170] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=99, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./48/binderfs") = 0 [pid 5064] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./48/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./48/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./48/file0") = 0 [pid 5064] umount2("./48/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./48/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./48/cgroup") = 0 [pid 5064] umount2("./48/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./48/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./48/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./48") = 0 [pid 5064] mkdir("./49", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5171 attached , child_tidptr=0x555555a8a650) = 100 [pid 5171] set_robust_list(0x555555a8a660, 24) = 0 [pid 5171] chdir("./49") = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5171] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5171] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] mkdir("./file0", 000) = 0 [pid 5171] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5171] open("./file0", O_RDONLY) = 3 [pid 5171] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5171] write(4, "-pids ", 6) = 6 [pid 5171] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5171] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5172 attached ) = 101 [pid 5171] ptrace(PTRACE_ATTACH, 101) = -1 EPERM (Operation not permitted) [pid 5171] close(3) = 0 [pid 5171] close(4) = 0 [pid 5171] close(5) = -1 EBADF (Bad file descriptor) [pid 5171] close(6) = -1 EBADF (Bad file descriptor) [pid 5171] close(7) = -1 EBADF (Bad file descriptor) [pid 5171] close(8) = -1 EBADF (Bad file descriptor) [pid 5171] close(9) = -1 EBADF (Bad file descriptor) [pid 5171] close(10) = -1 EBADF (Bad file descriptor) [pid 5171] close(11) = -1 EBADF (Bad file descriptor) [pid 5171] close(12) = -1 EBADF (Bad file descriptor) [pid 5171] close(13) = -1 EBADF (Bad file descriptor) [pid 5171] close(14) = -1 EBADF (Bad file descriptor) [pid 5171] close(15) = -1 EBADF (Bad file descriptor) [pid 5171] close(16) = -1 EBADF (Bad file descriptor) [pid 5171] close(17) = -1 EBADF (Bad file descriptor) [pid 5171] close(18) = -1 EBADF (Bad file descriptor) [pid 5171] close(19) = -1 EBADF (Bad file descriptor) [pid 5171] close(20) = -1 EBADF (Bad file descriptor) [pid 5171] close(21) = -1 EBADF (Bad file descriptor) [pid 5171] close(22) = -1 EBADF (Bad file descriptor) [pid 5171] close(23) = -1 EBADF (Bad file descriptor) [pid 5171] close(24) = -1 EBADF (Bad file descriptor) [pid 5171] close(25) = -1 EBADF (Bad file descriptor) [pid 5171] close(26) = -1 EBADF (Bad file descriptor) [pid 5171] close(27) = -1 EBADF (Bad file descriptor) [pid 5171] close(28) = -1 EBADF (Bad file descriptor) [pid 5171] close(29) = -1 EBADF (Bad file descriptor) [pid 5171] exit_group(0) = ? [pid 5171] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=100, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./49/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./49/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./49/cgroup.cpu") = 0 [pid 5064] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./49/binderfs") = 0 [pid 5064] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./49/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./49/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./49/file0") = 0 [pid 5064] umount2("./49/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./49/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./49/cgroup" [pid 5172] exit(0) = ? [pid 5172] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./49/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./49/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./49/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./49") = 0 [pid 5064] mkdir("./50", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5173 attached , child_tidptr=0x555555a8a650) = 102 [pid 5173] set_robust_list(0x555555a8a660, 24) = 0 [pid 5173] chdir("./50") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5173] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5173] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5173] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5173] mkdir("./file0", 000) = 0 [pid 5173] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5173] open("./file0", O_RDONLY) = 3 [pid 5173] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5173] write(4, "-pids ", 6) = 6 [pid 5173] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5173] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5174 attached ) = 103 [pid 5173] ptrace(PTRACE_ATTACH, 103) = -1 EPERM (Operation not permitted) [pid 5173] close(3) = 0 [pid 5173] close(4) = 0 [pid 5173] close(5) = -1 EBADF (Bad file descriptor) [pid 5173] close(6) = -1 EBADF (Bad file descriptor) [pid 5173] close(7) = -1 EBADF (Bad file descriptor) [pid 5173] close(8) = -1 EBADF (Bad file descriptor) [pid 5173] close(9) = -1 EBADF (Bad file descriptor) [pid 5173] close(10) = -1 EBADF (Bad file descriptor) [pid 5173] close(11) = -1 EBADF (Bad file descriptor) [pid 5173] close(12) = -1 EBADF (Bad file descriptor) [pid 5173] close(13) = -1 EBADF (Bad file descriptor) [pid 5173] close(14) = -1 EBADF (Bad file descriptor) [pid 5173] close(15) = -1 EBADF (Bad file descriptor) [pid 5173] close(16) = -1 EBADF (Bad file descriptor) [pid 5173] close(17) = -1 EBADF (Bad file descriptor) [pid 5173] close(18) = -1 EBADF (Bad file descriptor) [pid 5173] close(19) = -1 EBADF (Bad file descriptor) [pid 5173] close(20) = -1 EBADF (Bad file descriptor) [pid 5173] close(21) = -1 EBADF (Bad file descriptor) [pid 5173] close(22) = -1 EBADF (Bad file descriptor) [pid 5173] close(23) = -1 EBADF (Bad file descriptor) [pid 5173] close(24) = -1 EBADF (Bad file descriptor) [pid 5173] close(25) = -1 EBADF (Bad file descriptor) [pid 5173] close(26) = -1 EBADF (Bad file descriptor) [pid 5173] close(27) = -1 EBADF (Bad file descriptor) [pid 5173] close(28) = -1 EBADF (Bad file descriptor) [pid 5173] close(29) = -1 EBADF (Bad file descriptor) [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=102, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./50/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./50/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./50/cgroup.cpu") = 0 [pid 5064] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./50/binderfs") = 0 [pid 5064] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./50/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./50/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5174] exit(0 [pid 5064] close(4 [pid 5174] <... exit resumed>) = ? [pid 5064] <... close resumed>) = 0 [pid 5064] rmdir("./50/file0") = 0 [pid 5064] umount2("./50/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5174] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./50/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=103, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./50/cgroup") = 0 [pid 5064] umount2("./50/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./50/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./50/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./50") = 0 [pid 5064] mkdir("./51", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5175 attached , child_tidptr=0x555555a8a650) = 104 [pid 5175] set_robust_list(0x555555a8a660, 24) = 0 [pid 5175] chdir("./51") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5175] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5175] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] mkdir("./file0", 000) = 0 [pid 5175] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5175] open("./file0", O_RDONLY) = 3 [pid 5175] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5175] write(4, "-pids ", 6) = 6 [pid 5175] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5175] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5176 attached ) = 105 [pid 5175] ptrace(PTRACE_ATTACH, 105) = -1 EPERM (Operation not permitted) [pid 5175] close(3) = 0 [pid 5175] close(4) = 0 [pid 5175] close(5) = -1 EBADF (Bad file descriptor) [pid 5175] close(6) = -1 EBADF (Bad file descriptor) [pid 5175] close(7) = -1 EBADF (Bad file descriptor) [pid 5175] close(8) = -1 EBADF (Bad file descriptor) [pid 5175] close(9) = -1 EBADF (Bad file descriptor) [pid 5175] close(10) = -1 EBADF (Bad file descriptor) [pid 5175] close(11) = -1 EBADF (Bad file descriptor) [pid 5175] close(12) = -1 EBADF (Bad file descriptor) [pid 5175] close(13) = -1 EBADF (Bad file descriptor) [pid 5175] close(14) = -1 EBADF (Bad file descriptor) [pid 5175] close(15) = -1 EBADF (Bad file descriptor) [pid 5175] close(16) = -1 EBADF (Bad file descriptor) [pid 5175] close(17) = -1 EBADF (Bad file descriptor) [pid 5175] close(18) = -1 EBADF (Bad file descriptor) [pid 5175] close(19) = -1 EBADF (Bad file descriptor) [pid 5175] close(20) = -1 EBADF (Bad file descriptor) [pid 5175] close(21) = -1 EBADF (Bad file descriptor) [pid 5175] close(22) = -1 EBADF (Bad file descriptor) [pid 5175] close(23) = -1 EBADF (Bad file descriptor) [pid 5175] close(24) = -1 EBADF (Bad file descriptor) [pid 5175] close(25) = -1 EBADF (Bad file descriptor) [pid 5175] close(26) = -1 EBADF (Bad file descriptor) [pid 5175] close(27) = -1 EBADF (Bad file descriptor) [pid 5175] close(28) = -1 EBADF (Bad file descriptor) [pid 5175] close(29) = -1 EBADF (Bad file descriptor) [pid 5175] exit_group(0) = ? [pid 5175] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=104, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./51/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./51/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./51/cgroup.cpu") = 0 [pid 5064] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./51/binderfs") = 0 [pid 5176] exit(0 [pid 5064] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5176] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./51/file0", [pid 5176] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./51/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./51/file0") = 0 [pid 5064] umount2("./51/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./51/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./51/cgroup") = 0 [pid 5064] umount2("./51/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./51/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./51/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./51") = 0 [pid 5064] mkdir("./52", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5177 attached , child_tidptr=0x555555a8a650) = 106 [pid 5177] set_robust_list(0x555555a8a660, 24) = 0 [pid 5177] chdir("./52") = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5177] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5177] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5177] mkdir("./file0", 000) = 0 [pid 5177] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5177] open("./file0", O_RDONLY) = 3 [pid 5177] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5177] write(4, "-pids ", 6) = 6 [pid 5177] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5177] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5178 attached ) = 107 [pid 5177] ptrace(PTRACE_ATTACH, 107) = -1 EPERM (Operation not permitted) [pid 5177] close(3) = 0 [pid 5177] close(4) = 0 [pid 5177] close(5) = -1 EBADF (Bad file descriptor) [pid 5177] close(6) = -1 EBADF (Bad file descriptor) [pid 5177] close(7) = -1 EBADF (Bad file descriptor) [pid 5177] close(8) = -1 EBADF (Bad file descriptor) [pid 5177] close(9) = -1 EBADF (Bad file descriptor) [pid 5177] close(10) = -1 EBADF (Bad file descriptor) [pid 5177] close(11) = -1 EBADF (Bad file descriptor) [pid 5177] close(12) = -1 EBADF (Bad file descriptor) [pid 5177] close(13) = -1 EBADF (Bad file descriptor) [pid 5177] close(14) = -1 EBADF (Bad file descriptor) [pid 5177] close(15) = -1 EBADF (Bad file descriptor) [pid 5177] close(16) = -1 EBADF (Bad file descriptor) [pid 5177] close(17) = -1 EBADF (Bad file descriptor) [pid 5177] close(18) = -1 EBADF (Bad file descriptor) [pid 5177] close(19) = -1 EBADF (Bad file descriptor) [pid 5177] close(20) = -1 EBADF (Bad file descriptor) [pid 5177] close(21) = -1 EBADF (Bad file descriptor) [pid 5177] close(22) = -1 EBADF (Bad file descriptor) [pid 5177] close(23) = -1 EBADF (Bad file descriptor) [pid 5177] close(24) = -1 EBADF (Bad file descriptor) [pid 5177] close(25) = -1 EBADF (Bad file descriptor) [pid 5177] close(26) = -1 EBADF (Bad file descriptor) [pid 5177] close(27) = -1 EBADF (Bad file descriptor) [pid 5177] close(28) = -1 EBADF (Bad file descriptor) [pid 5177] close(29) = -1 EBADF (Bad file descriptor) [pid 5177] exit_group(0) = ? [pid 5177] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=106, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./52/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./52/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./52/cgroup.cpu") = 0 [pid 5064] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./52/binderfs" [pid 5178] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5178] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=107, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./52/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./52/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./52/file0") = 0 [pid 5064] umount2("./52/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./52/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./52/cgroup") = 0 [pid 5064] umount2("./52/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./52/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./52/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./52") = 0 [pid 5064] mkdir("./53", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5179 attached , child_tidptr=0x555555a8a650) = 108 [pid 5179] set_robust_list(0x555555a8a660, 24) = 0 [pid 5179] chdir("./53") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5179] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5179] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5179] mkdir("./file0", 000) = 0 [pid 5179] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5179] open("./file0", O_RDONLY) = 3 [pid 5179] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5179] write(4, "-pids ", 6) = 6 [pid 5179] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5179] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5181 attached ) = 109 [pid 5179] ptrace(PTRACE_ATTACH, 109) = -1 EPERM (Operation not permitted) [pid 5179] close(3) = 0 [pid 5179] close(4) = 0 [pid 5179] close(5) = -1 EBADF (Bad file descriptor) [pid 5179] close(6) = -1 EBADF (Bad file descriptor) [pid 5179] close(7) = -1 EBADF (Bad file descriptor) [pid 5179] close(8) = -1 EBADF (Bad file descriptor) [pid 5179] close(9) = -1 EBADF (Bad file descriptor) [pid 5179] close(10) = -1 EBADF (Bad file descriptor) [pid 5179] close(11) = -1 EBADF (Bad file descriptor) [pid 5179] close(12) = -1 EBADF (Bad file descriptor) [pid 5179] close(13) = -1 EBADF (Bad file descriptor) [pid 5179] close(14) = -1 EBADF (Bad file descriptor) [pid 5179] close(15) = -1 EBADF (Bad file descriptor) [pid 5179] close(16) = -1 EBADF (Bad file descriptor) [pid 5179] close(17) = -1 EBADF (Bad file descriptor) [pid 5179] close(18) = -1 EBADF (Bad file descriptor) [pid 5179] close(19) = -1 EBADF (Bad file descriptor) [pid 5179] close(20) = -1 EBADF (Bad file descriptor) [pid 5179] close(21) = -1 EBADF (Bad file descriptor) [pid 5179] close(22) = -1 EBADF (Bad file descriptor) [pid 5179] close(23) = -1 EBADF (Bad file descriptor) [pid 5179] close(24) = -1 EBADF (Bad file descriptor) [pid 5179] close(25) = -1 EBADF (Bad file descriptor) [pid 5179] close(26) = -1 EBADF (Bad file descriptor) [pid 5179] close(27) = -1 EBADF (Bad file descriptor) [pid 5179] close(28) = -1 EBADF (Bad file descriptor) [pid 5179] close(29) = -1 EBADF (Bad file descriptor) [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=108, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./53/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./53/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./53/cgroup.cpu") = 0 [pid 5064] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./53/binderfs" [pid 5181] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5181] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=109, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./53/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./53/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./53/file0") = 0 [pid 5064] umount2("./53/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./53/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./53/cgroup") = 0 [pid 5064] umount2("./53/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./53/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./53/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./53") = 0 [pid 5064] mkdir("./54", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5182 attached , child_tidptr=0x555555a8a650) = 110 [pid 5182] set_robust_list(0x555555a8a660, 24) = 0 [pid 5182] chdir("./54") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5182] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5182] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5182] mkdir("./file0", 000) = 0 [pid 5182] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5182] open("./file0", O_RDONLY) = 3 [pid 5182] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5182] write(4, "-pids ", 6) = 6 [pid 5182] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5182] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5183 attached ) = 111 [pid 5182] ptrace(PTRACE_ATTACH, 111) = -1 EPERM (Operation not permitted) [pid 5182] close(3) = 0 [pid 5182] close(4) = 0 [pid 5182] close(5) = -1 EBADF (Bad file descriptor) [pid 5182] close(6) = -1 EBADF (Bad file descriptor) [pid 5182] close(7) = -1 EBADF (Bad file descriptor) [pid 5182] close(8) = -1 EBADF (Bad file descriptor) [pid 5182] close(9) = -1 EBADF (Bad file descriptor) [pid 5182] close(10) = -1 EBADF (Bad file descriptor) [pid 5182] close(11) = -1 EBADF (Bad file descriptor) [pid 5182] close(12) = -1 EBADF (Bad file descriptor) [pid 5182] close(13) = -1 EBADF (Bad file descriptor) [pid 5182] close(14) = -1 EBADF (Bad file descriptor) [pid 5182] close(15) = -1 EBADF (Bad file descriptor) [pid 5182] close(16) = -1 EBADF (Bad file descriptor) [pid 5182] close(17) = -1 EBADF (Bad file descriptor) [pid 5182] close(18) = -1 EBADF (Bad file descriptor) [pid 5182] close(19) = -1 EBADF (Bad file descriptor) [pid 5182] close(20) = -1 EBADF (Bad file descriptor) [pid 5182] close(21) = -1 EBADF (Bad file descriptor) [pid 5182] close(22) = -1 EBADF (Bad file descriptor) [pid 5182] close(23) = -1 EBADF (Bad file descriptor) [pid 5182] close(24) = -1 EBADF (Bad file descriptor) [pid 5182] close(25) = -1 EBADF (Bad file descriptor) [pid 5182] close(26) = -1 EBADF (Bad file descriptor) [pid 5182] close(27) = -1 EBADF (Bad file descriptor) [pid 5182] close(28) = -1 EBADF (Bad file descriptor) [pid 5182] close(29) = -1 EBADF (Bad file descriptor) [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=110, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./54/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./54/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./54/cgroup.cpu") = 0 [pid 5064] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./54/binderfs") = 0 [pid 5064] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./54/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5183] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5183] <... exit resumed>) = ? [pid 5064] openat(AT_FDCWD, "./54/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5183] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./54/file0") = 0 [pid 5064] umount2("./54/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./54/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./54/cgroup") = 0 [pid 5064] umount2("./54/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./54/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./54/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./54") = 0 [pid 5064] mkdir("./55", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5184 attached , child_tidptr=0x555555a8a650) = 112 [pid 5184] set_robust_list(0x555555a8a660, 24) = 0 [pid 5184] chdir("./55") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5184] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5184] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] mkdir("./file0", 000) = 0 [pid 5184] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5184] open("./file0", O_RDONLY) = 3 [pid 5184] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5184] write(4, "-pids ", 6) = 6 [pid 5184] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5184] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5185 attached ) = 113 [pid 5184] ptrace(PTRACE_ATTACH, 113) = -1 EPERM (Operation not permitted) [pid 5184] close(3) = 0 [pid 5184] close(4) = 0 [pid 5184] close(5) = -1 EBADF (Bad file descriptor) [pid 5184] close(6) = -1 EBADF (Bad file descriptor) [pid 5184] close(7) = -1 EBADF (Bad file descriptor) [pid 5184] close(8) = -1 EBADF (Bad file descriptor) [pid 5184] close(9) = -1 EBADF (Bad file descriptor) [pid 5184] close(10) = -1 EBADF (Bad file descriptor) [pid 5184] close(11) = -1 EBADF (Bad file descriptor) [pid 5184] close(12) = -1 EBADF (Bad file descriptor) [pid 5184] close(13) = -1 EBADF (Bad file descriptor) [pid 5184] close(14) = -1 EBADF (Bad file descriptor) [pid 5184] close(15) = -1 EBADF (Bad file descriptor) [pid 5184] close(16) = -1 EBADF (Bad file descriptor) [pid 5184] close(17) = -1 EBADF (Bad file descriptor) [pid 5184] close(18) = -1 EBADF (Bad file descriptor) [pid 5184] close(19) = -1 EBADF (Bad file descriptor) [pid 5184] close(20) = -1 EBADF (Bad file descriptor) [pid 5184] close(21) = -1 EBADF (Bad file descriptor) [pid 5184] close(22) = -1 EBADF (Bad file descriptor) [pid 5184] close(23) = -1 EBADF (Bad file descriptor) [pid 5184] close(24) = -1 EBADF (Bad file descriptor) [pid 5184] close(25) = -1 EBADF (Bad file descriptor) [pid 5184] close(26) = -1 EBADF (Bad file descriptor) [pid 5184] close(27) = -1 EBADF (Bad file descriptor) [pid 5184] close(28) = -1 EBADF (Bad file descriptor) [pid 5184] close(29) = -1 EBADF (Bad file descriptor) [pid 5184] exit_group(0) = ? [pid 5184] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=112, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./55/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] exit(0) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./55/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./55/cgroup.cpu" [pid 5185] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=113, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./55/binderfs") = 0 [pid 5064] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./55/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./55/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./55/file0") = 0 [pid 5064] umount2("./55/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./55/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./55/cgroup") = 0 [pid 5064] umount2("./55/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./55/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./55/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./55") = 0 [pid 5064] mkdir("./56", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5186 attached , child_tidptr=0x555555a8a650) = 114 [pid 5186] set_robust_list(0x555555a8a660, 24) = 0 [pid 5186] chdir("./56") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5186] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5186] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] mkdir("./file0", 000) = 0 [pid 5186] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5186] open("./file0", O_RDONLY) = 3 [pid 5186] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5186] write(4, "-pids ", 6) = 6 [pid 5186] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5186] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5187 attached ) = 115 [pid 5186] ptrace(PTRACE_ATTACH, 115) = -1 EPERM (Operation not permitted) [pid 5186] close(3) = 0 [pid 5186] close(4) = 0 [pid 5186] close(5) = -1 EBADF (Bad file descriptor) [pid 5186] close(6) = -1 EBADF (Bad file descriptor) [pid 5186] close(7) = -1 EBADF (Bad file descriptor) [pid 5186] close(8) = -1 EBADF (Bad file descriptor) [pid 5186] close(9) = -1 EBADF (Bad file descriptor) [pid 5186] close(10) = -1 EBADF (Bad file descriptor) [pid 5186] close(11) = -1 EBADF (Bad file descriptor) [pid 5186] close(12) = -1 EBADF (Bad file descriptor) [pid 5186] close(13) = -1 EBADF (Bad file descriptor) [pid 5186] close(14) = -1 EBADF (Bad file descriptor) [pid 5186] close(15) = -1 EBADF (Bad file descriptor) [pid 5186] close(16) = -1 EBADF (Bad file descriptor) [pid 5186] close(17) = -1 EBADF (Bad file descriptor) [pid 5186] close(18) = -1 EBADF (Bad file descriptor) [pid 5186] close(19) = -1 EBADF (Bad file descriptor) [pid 5186] close(20) = -1 EBADF (Bad file descriptor) [pid 5186] close(21) = -1 EBADF (Bad file descriptor) [pid 5186] close(22) = -1 EBADF (Bad file descriptor) [pid 5186] close(23) = -1 EBADF (Bad file descriptor) [pid 5186] close(24) = -1 EBADF (Bad file descriptor) [pid 5186] close(25) = -1 EBADF (Bad file descriptor) [pid 5186] close(26) = -1 EBADF (Bad file descriptor) [pid 5186] close(27) = -1 EBADF (Bad file descriptor) [pid 5186] close(28) = -1 EBADF (Bad file descriptor) [pid 5186] close(29) = -1 EBADF (Bad file descriptor) [pid 5186] exit_group(0) = ? [pid 5186] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=114, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./56/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./56/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5187] exit(0 [pid 5064] unlink("./56/cgroup.cpu" [pid 5187] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./56/binderfs", [pid 5187] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=115, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./56/binderfs") = 0 [pid 5064] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./56/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./56/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./56/file0") = 0 [pid 5064] umount2("./56/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./56/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./56/cgroup") = 0 [pid 5064] umount2("./56/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./56/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./56/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./56") = 0 [pid 5064] mkdir("./57", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 116 ./strace-static-x86_64: Process 5188 attached [pid 5188] set_robust_list(0x555555a8a660, 24) = 0 [pid 5188] chdir("./57") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5188] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5188] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] mkdir("./file0", 000) = 0 [pid 5188] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5188] open("./file0", O_RDONLY) = 3 [pid 5188] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5188] write(4, "-pids ", 6) = 6 [pid 5188] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5188] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5189 attached ) = 117 [pid 5188] ptrace(PTRACE_ATTACH, 117) = -1 EPERM (Operation not permitted) [pid 5188] close(3) = 0 [pid 5188] close(4) = 0 [pid 5188] close(5) = -1 EBADF (Bad file descriptor) [pid 5188] close(6) = -1 EBADF (Bad file descriptor) [pid 5188] close(7) = -1 EBADF (Bad file descriptor) [pid 5188] close(8) = -1 EBADF (Bad file descriptor) [pid 5188] close(9) = -1 EBADF (Bad file descriptor) [pid 5188] close(10) = -1 EBADF (Bad file descriptor) [pid 5188] close(11) = -1 EBADF (Bad file descriptor) [pid 5188] close(12) = -1 EBADF (Bad file descriptor) [pid 5188] close(13) = -1 EBADF (Bad file descriptor) [pid 5188] close(14) = -1 EBADF (Bad file descriptor) [pid 5188] close(15) = -1 EBADF (Bad file descriptor) [pid 5188] close(16) = -1 EBADF (Bad file descriptor) [pid 5188] close(17) = -1 EBADF (Bad file descriptor) [pid 5188] close(18) = -1 EBADF (Bad file descriptor) [pid 5188] close(19) = -1 EBADF (Bad file descriptor) [pid 5188] close(20) = -1 EBADF (Bad file descriptor) [pid 5188] close(21) = -1 EBADF (Bad file descriptor) [pid 5188] close(22) = -1 EBADF (Bad file descriptor) [pid 5188] close(23) = -1 EBADF (Bad file descriptor) [pid 5188] close(24) = -1 EBADF (Bad file descriptor) [pid 5188] close(25) = -1 EBADF (Bad file descriptor) [pid 5188] close(26) = -1 EBADF (Bad file descriptor) [pid 5188] close(27) = -1 EBADF (Bad file descriptor) [pid 5188] close(28) = -1 EBADF (Bad file descriptor) [pid 5188] close(29) = -1 EBADF (Bad file descriptor) [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=116, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./57/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5189] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5189] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./57/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./57/cgroup.cpu") = 0 [pid 5189] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=117, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./57/binderfs") = 0 [pid 5064] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./57/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./57/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./57/file0") = 0 [pid 5064] umount2("./57/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./57/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./57/cgroup") = 0 [pid 5064] umount2("./57/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./57/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./57/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./57") = 0 [pid 5064] mkdir("./58", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 118 ./strace-static-x86_64: Process 5190 attached [pid 5190] set_robust_list(0x555555a8a660, 24) = 0 [pid 5190] chdir("./58") = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5190] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5190] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5190] write(3, "1000", 4) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5190] mkdir("./file0", 000) = 0 [pid 5190] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5190] open("./file0", O_RDONLY) = 3 [pid 5190] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5190] write(4, "-pids ", 6) = 6 [pid 5190] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5190] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5191 attached ) = 119 [pid 5190] ptrace(PTRACE_ATTACH, 119) = -1 EPERM (Operation not permitted) [pid 5190] close(3) = 0 [pid 5190] close(4) = 0 [pid 5190] close(5) = -1 EBADF (Bad file descriptor) [pid 5190] close(6) = -1 EBADF (Bad file descriptor) [pid 5190] close(7) = -1 EBADF (Bad file descriptor) [pid 5190] close(8) = -1 EBADF (Bad file descriptor) [pid 5190] close(9) = -1 EBADF (Bad file descriptor) [pid 5190] close(10) = -1 EBADF (Bad file descriptor) [pid 5190] close(11) = -1 EBADF (Bad file descriptor) [pid 5190] close(12) = -1 EBADF (Bad file descriptor) [pid 5190] close(13) = -1 EBADF (Bad file descriptor) [pid 5190] close(14) = -1 EBADF (Bad file descriptor) [pid 5190] close(15) = -1 EBADF (Bad file descriptor) [pid 5190] close(16) = -1 EBADF (Bad file descriptor) [pid 5190] close(17) = -1 EBADF (Bad file descriptor) [pid 5190] close(18) = -1 EBADF (Bad file descriptor) [pid 5190] close(19) = -1 EBADF (Bad file descriptor) [pid 5190] close(20) = -1 EBADF (Bad file descriptor) [pid 5190] close(21) = -1 EBADF (Bad file descriptor) [pid 5190] close(22) = -1 EBADF (Bad file descriptor) [pid 5190] close(23) = -1 EBADF (Bad file descriptor) [pid 5190] close(24) = -1 EBADF (Bad file descriptor) [pid 5190] close(25) = -1 EBADF (Bad file descriptor) [pid 5190] close(26) = -1 EBADF (Bad file descriptor) [pid 5190] close(27) = -1 EBADF (Bad file descriptor) [pid 5190] close(28) = -1 EBADF (Bad file descriptor) [pid 5190] close(29) = -1 EBADF (Bad file descriptor) [pid 5190] exit_group(0) = ? [pid 5190] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=118, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./58/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./58/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5191] exit(0 [pid 5064] unlink("./58/cgroup.cpu" [pid 5191] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5191] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./58/binderfs") = 0 [pid 5064] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./58/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./58/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./58/file0") = 0 [pid 5064] umount2("./58/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./58/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./58/cgroup") = 0 [pid 5064] umount2("./58/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./58/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./58/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./58") = 0 [pid 5064] mkdir("./59", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5192 attached , child_tidptr=0x555555a8a650) = 120 [pid 5192] set_robust_list(0x555555a8a660, 24) = 0 [pid 5192] chdir("./59") = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5192] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5192] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] mkdir("./file0", 000) = 0 [pid 5192] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5192] open("./file0", O_RDONLY) = 3 [pid 5192] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5192] write(4, "-pids ", 6) = 6 [pid 5192] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5192] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5193 attached ) = 121 [pid 5192] ptrace(PTRACE_ATTACH, 121) = -1 EPERM (Operation not permitted) [pid 5192] close(3) = 0 [pid 5192] close(4) = 0 [pid 5192] close(5) = -1 EBADF (Bad file descriptor) [pid 5192] close(6) = -1 EBADF (Bad file descriptor) [pid 5192] close(7) = -1 EBADF (Bad file descriptor) [pid 5192] close(8) = -1 EBADF (Bad file descriptor) [pid 5192] close(9) = -1 EBADF (Bad file descriptor) [pid 5192] close(10) = -1 EBADF (Bad file descriptor) [pid 5192] close(11) = -1 EBADF (Bad file descriptor) [pid 5192] close(12) = -1 EBADF (Bad file descriptor) [pid 5192] close(13) = -1 EBADF (Bad file descriptor) [pid 5192] close(14) = -1 EBADF (Bad file descriptor) [pid 5192] close(15) = -1 EBADF (Bad file descriptor) [pid 5192] close(16) = -1 EBADF (Bad file descriptor) [pid 5192] close(17) = -1 EBADF (Bad file descriptor) [pid 5192] close(18) = -1 EBADF (Bad file descriptor) [pid 5192] close(19) = -1 EBADF (Bad file descriptor) [pid 5192] close(20) = -1 EBADF (Bad file descriptor) [pid 5192] close(21) = -1 EBADF (Bad file descriptor) [pid 5192] close(22) = -1 EBADF (Bad file descriptor) [pid 5192] close(23) = -1 EBADF (Bad file descriptor) [pid 5192] close(24) = -1 EBADF (Bad file descriptor) [pid 5192] close(25) = -1 EBADF (Bad file descriptor) [pid 5192] close(26) = -1 EBADF (Bad file descriptor) [pid 5192] close(27) = -1 EBADF (Bad file descriptor) [pid 5192] close(28) = -1 EBADF (Bad file descriptor) [pid 5192] close(29) = -1 EBADF (Bad file descriptor) [pid 5192] exit_group(0) = ? [pid 5192] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=120, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5193] exit(0) = ? [pid 5064] umount2("./59/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5193] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=121, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./59/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./59/cgroup.cpu") = 0 [pid 5064] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./59/binderfs") = 0 [pid 5064] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./59/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./59/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./59/file0") = 0 [pid 5064] umount2("./59/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./59/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./59/cgroup") = 0 [pid 5064] umount2("./59/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./59/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./59/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./59") = 0 [pid 5064] mkdir("./60", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5194 attached , child_tidptr=0x555555a8a650) = 122 [pid 5194] set_robust_list(0x555555a8a660, 24) = 0 [pid 5194] chdir("./60") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5194] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5194] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5194] mkdir("./file0", 000) = 0 [pid 5194] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5194] open("./file0", O_RDONLY) = 3 [pid 5194] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5194] write(4, "-pids ", 6) = 6 [pid 5194] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5194] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5196 attached ) = 123 [pid 5194] ptrace(PTRACE_ATTACH, 123) = -1 EPERM (Operation not permitted) [pid 5194] close(3) = 0 [pid 5194] close(4) = 0 [pid 5194] close(5) = -1 EBADF (Bad file descriptor) [pid 5194] close(6) = -1 EBADF (Bad file descriptor) [pid 5194] close(7) = -1 EBADF (Bad file descriptor) [pid 5194] close(8) = -1 EBADF (Bad file descriptor) [pid 5194] close(9) = -1 EBADF (Bad file descriptor) [pid 5194] close(10) = -1 EBADF (Bad file descriptor) [pid 5194] close(11) = -1 EBADF (Bad file descriptor) [pid 5194] close(12) = -1 EBADF (Bad file descriptor) [pid 5194] close(13) = -1 EBADF (Bad file descriptor) [pid 5194] close(14) = -1 EBADF (Bad file descriptor) [pid 5194] close(15) = -1 EBADF (Bad file descriptor) [pid 5194] close(16) = -1 EBADF (Bad file descriptor) [pid 5194] close(17) = -1 EBADF (Bad file descriptor) [pid 5194] close(18) = -1 EBADF (Bad file descriptor) [pid 5194] close(19) = -1 EBADF (Bad file descriptor) [pid 5194] close(20) = -1 EBADF (Bad file descriptor) [pid 5194] close(21) = -1 EBADF (Bad file descriptor) [pid 5194] close(22) = -1 EBADF (Bad file descriptor) [pid 5194] close(23) = -1 EBADF (Bad file descriptor) [pid 5194] close(24) = -1 EBADF (Bad file descriptor) [pid 5194] close(25) = -1 EBADF (Bad file descriptor) [pid 5194] close(26) = -1 EBADF (Bad file descriptor) [pid 5194] close(27) = -1 EBADF (Bad file descriptor) [pid 5194] close(28) = -1 EBADF (Bad file descriptor) [pid 5194] close(29) = -1 EBADF (Bad file descriptor) [pid 5194] exit_group(0) = ? [pid 5194] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=122, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./60/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./60/cgroup.cpu", [pid 5196] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5196] <... exit resumed>) = ? [pid 5064] unlink("./60/cgroup.cpu") = 0 [pid 5064] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./60/binderfs", [pid 5196] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=123, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./60/binderfs") = 0 [pid 5064] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./60/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./60/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./60/file0") = 0 [pid 5064] umount2("./60/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./60/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./60/cgroup") = 0 [pid 5064] umount2("./60/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./60/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./60/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./60") = 0 [pid 5064] mkdir("./61", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5197 attached , child_tidptr=0x555555a8a650) = 124 [pid 5197] set_robust_list(0x555555a8a660, 24) = 0 [pid 5197] chdir("./61") = 0 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5197] setpgid(0, 0) = 0 [pid 5197] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5197] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5197] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5197] write(3, "1000", 4) = 4 [pid 5197] close(3) = 0 [pid 5197] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5197] mkdir("./file0", 000) = 0 [pid 5197] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5197] open("./file0", O_RDONLY) = 3 [pid 5197] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5197] write(4, "-pids ", 6) = 6 [pid 5197] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5197] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5198 attached ) = 125 [pid 5197] ptrace(PTRACE_ATTACH, 125) = -1 EPERM (Operation not permitted) [pid 5197] close(3) = 0 [pid 5197] close(4) = 0 [pid 5197] close(5) = -1 EBADF (Bad file descriptor) [pid 5197] close(6) = -1 EBADF (Bad file descriptor) [pid 5197] close(7) = -1 EBADF (Bad file descriptor) [pid 5197] close(8) = -1 EBADF (Bad file descriptor) [pid 5197] close(9) = -1 EBADF (Bad file descriptor) [pid 5197] close(10) = -1 EBADF (Bad file descriptor) [pid 5197] close(11) = -1 EBADF (Bad file descriptor) [pid 5197] close(12) = -1 EBADF (Bad file descriptor) [pid 5197] close(13) = -1 EBADF (Bad file descriptor) [pid 5197] close(14) = -1 EBADF (Bad file descriptor) [pid 5197] close(15) = -1 EBADF (Bad file descriptor) [pid 5197] close(16) = -1 EBADF (Bad file descriptor) [pid 5197] close(17) = -1 EBADF (Bad file descriptor) [pid 5197] close(18) = -1 EBADF (Bad file descriptor) [pid 5197] close(19) = -1 EBADF (Bad file descriptor) [pid 5197] close(20) = -1 EBADF (Bad file descriptor) [pid 5197] close(21) = -1 EBADF (Bad file descriptor) [pid 5197] close(22) = -1 EBADF (Bad file descriptor) [pid 5197] close(23) = -1 EBADF (Bad file descriptor) [pid 5197] close(24) = -1 EBADF (Bad file descriptor) [pid 5197] close(25) = -1 EBADF (Bad file descriptor) [pid 5197] close(26) = -1 EBADF (Bad file descriptor) [pid 5197] close(27) = -1 EBADF (Bad file descriptor) [pid 5197] close(28) = -1 EBADF (Bad file descriptor) [pid 5197] close(29) = -1 EBADF (Bad file descriptor) [pid 5197] exit_group(0) = ? [pid 5197] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=124, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./61/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./61/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./61/cgroup.cpu") = 0 [pid 5064] umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./61/binderfs", [pid 5198] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5198] <... exit resumed>) = ? [pid 5064] unlink("./61/binderfs") = 0 [pid 5064] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5198] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=125, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./61/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./61/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./61/file0") = 0 [pid 5064] umount2("./61/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./61/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./61/cgroup") = 0 [pid 5064] umount2("./61/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./61/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./61/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./61") = 0 [pid 5064] mkdir("./62", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5199 attached , child_tidptr=0x555555a8a650) = 126 [pid 5199] set_robust_list(0x555555a8a660, 24) = 0 [pid 5199] chdir("./62") = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5199] setpgid(0, 0) = 0 [pid 5199] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5199] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5199] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] write(3, "1000", 4) = 4 [pid 5199] close(3) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5199] mkdir("./file0", 000) = 0 [pid 5199] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5199] open("./file0", O_RDONLY) = 3 [pid 5199] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5199] write(4, "-pids ", 6) = 6 [pid 5199] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5199] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5200 attached ) = 127 [pid 5199] ptrace(PTRACE_ATTACH, 127) = -1 EPERM (Operation not permitted) [pid 5199] close(3) = 0 [pid 5199] close(4) = 0 [pid 5199] close(5) = -1 EBADF (Bad file descriptor) [pid 5199] close(6) = -1 EBADF (Bad file descriptor) [pid 5199] close(7) = -1 EBADF (Bad file descriptor) [pid 5199] close(8) = -1 EBADF (Bad file descriptor) [pid 5199] close(9) = -1 EBADF (Bad file descriptor) [pid 5199] close(10) = -1 EBADF (Bad file descriptor) [pid 5199] close(11) = -1 EBADF (Bad file descriptor) [pid 5199] close(12) = -1 EBADF (Bad file descriptor) [pid 5199] close(13) = -1 EBADF (Bad file descriptor) [pid 5199] close(14) = -1 EBADF (Bad file descriptor) [pid 5199] close(15) = -1 EBADF (Bad file descriptor) [pid 5199] close(16) = -1 EBADF (Bad file descriptor) [pid 5199] close(17) = -1 EBADF (Bad file descriptor) [pid 5199] close(18) = -1 EBADF (Bad file descriptor) [pid 5199] close(19) = -1 EBADF (Bad file descriptor) [pid 5199] close(20) = -1 EBADF (Bad file descriptor) [pid 5199] close(21) = -1 EBADF (Bad file descriptor) [pid 5199] close(22) = -1 EBADF (Bad file descriptor) [pid 5199] close(23) = -1 EBADF (Bad file descriptor) [pid 5199] close(24) = -1 EBADF (Bad file descriptor) [pid 5199] close(25) = -1 EBADF (Bad file descriptor) [pid 5199] close(26) = -1 EBADF (Bad file descriptor) [pid 5199] close(27) = -1 EBADF (Bad file descriptor) [pid 5199] close(28) = -1 EBADF (Bad file descriptor) [pid 5199] close(29) = -1 EBADF (Bad file descriptor) [pid 5199] exit_group(0) = ? [pid 5199] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=126, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./62/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./62/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5200] exit(0 [pid 5064] unlink("./62/cgroup.cpu" [pid 5200] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5200] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=127, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./62/binderfs") = 0 [pid 5064] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./62/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./62/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./62/file0") = 0 [pid 5064] umount2("./62/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./62/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./62/cgroup") = 0 [pid 5064] umount2("./62/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./62/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./62/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./62") = 0 [pid 5064] mkdir("./63", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5201 attached , child_tidptr=0x555555a8a650) = 128 [pid 5201] set_robust_list(0x555555a8a660, 24) = 0 [pid 5201] chdir("./63") = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5201] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5201] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5201] mkdir("./file0", 000) = 0 [pid 5201] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5201] open("./file0", O_RDONLY) = 3 [pid 5201] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5201] write(4, "-pids ", 6) = 6 [pid 5201] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5201] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5202 attached ) = 129 [pid 5201] ptrace(PTRACE_ATTACH, 129) = -1 EPERM (Operation not permitted) [pid 5201] close(3) = 0 [pid 5201] close(4) = 0 [pid 5201] close(5) = -1 EBADF (Bad file descriptor) [pid 5201] close(6) = -1 EBADF (Bad file descriptor) [pid 5201] close(7) = -1 EBADF (Bad file descriptor) [pid 5201] close(8) = -1 EBADF (Bad file descriptor) [pid 5201] close(9) = -1 EBADF (Bad file descriptor) [pid 5201] close(10) = -1 EBADF (Bad file descriptor) [pid 5201] close(11) = -1 EBADF (Bad file descriptor) [pid 5201] close(12) = -1 EBADF (Bad file descriptor) [pid 5201] close(13) = -1 EBADF (Bad file descriptor) [pid 5201] close(14) = -1 EBADF (Bad file descriptor) [pid 5201] close(15) = -1 EBADF (Bad file descriptor) [pid 5201] close(16) = -1 EBADF (Bad file descriptor) [pid 5201] close(17) = -1 EBADF (Bad file descriptor) [pid 5201] close(18) = -1 EBADF (Bad file descriptor) [pid 5201] close(19) = -1 EBADF (Bad file descriptor) [pid 5201] close(20) = -1 EBADF (Bad file descriptor) [pid 5201] close(21) = -1 EBADF (Bad file descriptor) [pid 5201] close(22) = -1 EBADF (Bad file descriptor) [pid 5201] close(23) = -1 EBADF (Bad file descriptor) [pid 5201] close(24) = -1 EBADF (Bad file descriptor) [pid 5201] close(25) = -1 EBADF (Bad file descriptor) [pid 5201] close(26) = -1 EBADF (Bad file descriptor) [pid 5201] close(27) = -1 EBADF (Bad file descriptor) [pid 5201] close(28) = -1 EBADF (Bad file descriptor) [pid 5201] close(29) = -1 EBADF (Bad file descriptor) [pid 5201] exit_group(0) = ? [pid 5201] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=128, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./63", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./63/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./63/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5202] exit(0 [pid 5064] unlink("./63/cgroup.cpu" [pid 5202] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./63/binderfs") = 0 [pid 5202] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./63/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./63/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./63/file0") = 0 [pid 5064] umount2("./63/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./63/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./63/cgroup") = 0 [pid 5064] umount2("./63/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./63/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./63/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./63") = 0 [pid 5064] mkdir("./64", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5203 attached , child_tidptr=0x555555a8a650) = 130 [pid 5203] set_robust_list(0x555555a8a660, 24) = 0 [pid 5203] chdir("./64") = 0 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5203] setpgid(0, 0) = 0 [pid 5203] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5203] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5203] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5203] write(3, "1000", 4) = 4 [pid 5203] close(3) = 0 [pid 5203] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5203] mkdir("./file0", 000) = 0 [pid 5203] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5203] open("./file0", O_RDONLY) = 3 [pid 5203] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5203] write(4, "-pids ", 6) = 6 [pid 5203] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5203] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5204 attached ) = 131 [pid 5203] ptrace(PTRACE_ATTACH, 131) = -1 EPERM (Operation not permitted) [pid 5203] close(3) = 0 [pid 5203] close(4) = 0 [pid 5203] close(5) = -1 EBADF (Bad file descriptor) [pid 5203] close(6) = -1 EBADF (Bad file descriptor) [pid 5203] close(7) = -1 EBADF (Bad file descriptor) [pid 5203] close(8) = -1 EBADF (Bad file descriptor) [pid 5203] close(9) = -1 EBADF (Bad file descriptor) [pid 5203] close(10) = -1 EBADF (Bad file descriptor) [pid 5203] close(11) = -1 EBADF (Bad file descriptor) [pid 5203] close(12) = -1 EBADF (Bad file descriptor) [pid 5203] close(13) = -1 EBADF (Bad file descriptor) [pid 5203] close(14) = -1 EBADF (Bad file descriptor) [pid 5203] close(15) = -1 EBADF (Bad file descriptor) [pid 5203] close(16) = -1 EBADF (Bad file descriptor) [pid 5203] close(17) = -1 EBADF (Bad file descriptor) [pid 5203] close(18) = -1 EBADF (Bad file descriptor) [pid 5203] close(19) = -1 EBADF (Bad file descriptor) [pid 5203] close(20) = -1 EBADF (Bad file descriptor) [pid 5203] close(21) = -1 EBADF (Bad file descriptor) [pid 5203] close(22) = -1 EBADF (Bad file descriptor) [pid 5203] close(23) = -1 EBADF (Bad file descriptor) [pid 5203] close(24) = -1 EBADF (Bad file descriptor) [pid 5203] close(25) = -1 EBADF (Bad file descriptor) [pid 5203] close(26) = -1 EBADF (Bad file descriptor) [pid 5203] close(27) = -1 EBADF (Bad file descriptor) [pid 5203] close(28) = -1 EBADF (Bad file descriptor) [pid 5203] close(29) = -1 EBADF (Bad file descriptor) [pid 5203] exit_group(0) = ? [pid 5203] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=130, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5204] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5204] <... exit resumed>) = ? [pid 5064] umount2("./64/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./64/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5204] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=131, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./64/cgroup.cpu") = 0 [pid 5064] umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./64/binderfs") = 0 [pid 5064] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./64/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./64/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./64/file0") = 0 [pid 5064] umount2("./64/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./64/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./64/cgroup") = 0 [pid 5064] umount2("./64/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./64/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./64/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./64") = 0 [pid 5064] mkdir("./65", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 132 ./strace-static-x86_64: Process 5205 attached [pid 5205] set_robust_list(0x555555a8a660, 24) = 0 [pid 5205] chdir("./65") = 0 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5205] setpgid(0, 0) = 0 [pid 5205] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5205] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5205] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5205] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5205] mkdir("./file0", 000) = 0 [pid 5205] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5205] open("./file0", O_RDONLY) = 3 [pid 5205] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5205] write(4, "-pids ", 6) = 6 [pid 5205] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5205] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5206 attached ) = 133 [pid 5205] ptrace(PTRACE_ATTACH, 133) = -1 EPERM (Operation not permitted) [pid 5205] close(3) = 0 [pid 5205] close(4) = 0 [pid 5205] close(5) = -1 EBADF (Bad file descriptor) [pid 5205] close(6) = -1 EBADF (Bad file descriptor) [pid 5205] close(7) = -1 EBADF (Bad file descriptor) [pid 5205] close(8) = -1 EBADF (Bad file descriptor) [pid 5205] close(9) = -1 EBADF (Bad file descriptor) [pid 5205] close(10) = -1 EBADF (Bad file descriptor) [pid 5205] close(11) = -1 EBADF (Bad file descriptor) [pid 5205] close(12) = -1 EBADF (Bad file descriptor) [pid 5205] close(13) = -1 EBADF (Bad file descriptor) [pid 5205] close(14) = -1 EBADF (Bad file descriptor) [pid 5205] close(15) = -1 EBADF (Bad file descriptor) [pid 5205] close(16) = -1 EBADF (Bad file descriptor) [pid 5205] close(17) = -1 EBADF (Bad file descriptor) [pid 5205] close(18) = -1 EBADF (Bad file descriptor) [pid 5205] close(19) = -1 EBADF (Bad file descriptor) [pid 5205] close(20) = -1 EBADF (Bad file descriptor) [pid 5205] close(21) = -1 EBADF (Bad file descriptor) [pid 5205] close(22) = -1 EBADF (Bad file descriptor) [pid 5205] close(23) = -1 EBADF (Bad file descriptor) [pid 5205] close(24) = -1 EBADF (Bad file descriptor) [pid 5205] close(25) = -1 EBADF (Bad file descriptor) [pid 5205] close(26) = -1 EBADF (Bad file descriptor) [pid 5205] close(27) = -1 EBADF (Bad file descriptor) [pid 5205] close(28) = -1 EBADF (Bad file descriptor) [pid 5205] close(29) = -1 EBADF (Bad file descriptor) [pid 5205] exit_group(0) = ? [pid 5205] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=132, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./65/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./65/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./65/cgroup.cpu") = 0 [pid 5064] umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./65/binderfs") = 0 [pid 5064] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./65/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./65/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5206] exit(0 [pid 5064] <... openat resumed>) = 4 [pid 5206] <... exit resumed>) = ? [pid 5064] newfstatat(4, "", [pid 5206] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=133, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./65/file0") = 0 [pid 5064] umount2("./65/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./65/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./65/cgroup") = 0 [pid 5064] umount2("./65/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./65/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./65/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./65") = 0 [pid 5064] mkdir("./66", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5207 attached , child_tidptr=0x555555a8a650) = 134 [pid 5207] set_robust_list(0x555555a8a660, 24) = 0 [pid 5207] chdir("./66") = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5207] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5207] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5207] mkdir("./file0", 000) = 0 [pid 5207] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5207] open("./file0", O_RDONLY) = 3 [pid 5207] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5207] write(4, "-pids ", 6) = 6 [pid 5207] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5207] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5208 attached ) = 135 [pid 5207] ptrace(PTRACE_ATTACH, 135) = -1 EPERM (Operation not permitted) [pid 5207] close(3) = 0 [pid 5207] close(4) = 0 [pid 5207] close(5) = -1 EBADF (Bad file descriptor) [pid 5207] close(6) = -1 EBADF (Bad file descriptor) [pid 5207] close(7) = -1 EBADF (Bad file descriptor) [pid 5207] close(8) = -1 EBADF (Bad file descriptor) [pid 5207] close(9) = -1 EBADF (Bad file descriptor) [pid 5207] close(10) = -1 EBADF (Bad file descriptor) [pid 5207] close(11) = -1 EBADF (Bad file descriptor) [pid 5207] close(12) = -1 EBADF (Bad file descriptor) [pid 5207] close(13) = -1 EBADF (Bad file descriptor) [pid 5207] close(14) = -1 EBADF (Bad file descriptor) [pid 5207] close(15) = -1 EBADF (Bad file descriptor) [pid 5207] close(16) = -1 EBADF (Bad file descriptor) [pid 5207] close(17) = -1 EBADF (Bad file descriptor) [pid 5207] close(18) = -1 EBADF (Bad file descriptor) [pid 5207] close(19) = -1 EBADF (Bad file descriptor) [pid 5207] close(20) = -1 EBADF (Bad file descriptor) [pid 5207] close(21) = -1 EBADF (Bad file descriptor) [pid 5207] close(22) = -1 EBADF (Bad file descriptor) [pid 5207] close(23) = -1 EBADF (Bad file descriptor) [pid 5207] close(24) = -1 EBADF (Bad file descriptor) [pid 5207] close(25) = -1 EBADF (Bad file descriptor) [pid 5207] close(26) = -1 EBADF (Bad file descriptor) [pid 5207] close(27) = -1 EBADF (Bad file descriptor) [pid 5207] close(28) = -1 EBADF (Bad file descriptor) [pid 5207] close(29) = -1 EBADF (Bad file descriptor) [pid 5207] exit_group(0) = ? [pid 5207] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=134, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./66/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./66/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./66/cgroup.cpu") = 0 [pid 5064] umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./66/binderfs") = 0 [pid 5064] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./66/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5208] exit(0) = ? [pid 5064] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./66/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5208] +++ exited with 0 +++ [pid 5064] <... openat resumed>) = 4 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./66/file0") = 0 [pid 5064] umount2("./66/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./66/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./66/cgroup") = 0 [pid 5064] umount2("./66/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./66/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./66/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./66") = 0 [pid 5064] mkdir("./67", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5209 attached , child_tidptr=0x555555a8a650) = 136 [pid 5209] set_robust_list(0x555555a8a660, 24) = 0 [pid 5209] chdir("./67") = 0 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5209] setpgid(0, 0) = 0 [pid 5209] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5209] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5209] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5209] write(3, "1000", 4) = 4 [pid 5209] close(3) = 0 [pid 5209] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5209] mkdir("./file0", 000) = 0 [pid 5209] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5209] open("./file0", O_RDONLY) = 3 [pid 5209] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5209] write(4, "-pids ", 6) = 6 [pid 5209] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5209] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5211 attached ) = 137 [pid 5209] ptrace(PTRACE_ATTACH, 137) = -1 EPERM (Operation not permitted) [pid 5209] close(3) = 0 [pid 5209] close(4) = 0 [pid 5209] close(5) = -1 EBADF (Bad file descriptor) [pid 5209] close(6) = -1 EBADF (Bad file descriptor) [pid 5209] close(7) = -1 EBADF (Bad file descriptor) [pid 5209] close(8) = -1 EBADF (Bad file descriptor) [pid 5209] close(9) = -1 EBADF (Bad file descriptor) [pid 5209] close(10) = -1 EBADF (Bad file descriptor) [pid 5209] close(11) = -1 EBADF (Bad file descriptor) [pid 5209] close(12) = -1 EBADF (Bad file descriptor) [pid 5209] close(13) = -1 EBADF (Bad file descriptor) [pid 5209] close(14) = -1 EBADF (Bad file descriptor) [pid 5209] close(15) = -1 EBADF (Bad file descriptor) [pid 5209] close(16) = -1 EBADF (Bad file descriptor) [pid 5209] close(17) = -1 EBADF (Bad file descriptor) [pid 5209] close(18) = -1 EBADF (Bad file descriptor) [pid 5209] close(19) = -1 EBADF (Bad file descriptor) [pid 5209] close(20) = -1 EBADF (Bad file descriptor) [pid 5209] close(21) = -1 EBADF (Bad file descriptor) [pid 5209] close(22) = -1 EBADF (Bad file descriptor) [pid 5209] close(23) = -1 EBADF (Bad file descriptor) [pid 5209] close(24) = -1 EBADF (Bad file descriptor) [pid 5209] close(25) = -1 EBADF (Bad file descriptor) [pid 5209] close(26) = -1 EBADF (Bad file descriptor) [pid 5209] close(27) = -1 EBADF (Bad file descriptor) [pid 5209] close(28) = -1 EBADF (Bad file descriptor) [pid 5209] close(29) = -1 EBADF (Bad file descriptor) [pid 5209] exit_group(0) = ? [pid 5209] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=136, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5211] exit(0) = ? [pid 5064] getdents64(3, [pid 5211] +++ exited with 0 +++ [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 1 entries */, 32768) = 32 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=137, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./67/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./67/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./67/cgroup.cpu") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 6 entries */, 32768) = 176 [pid 5064] umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./67/binderfs") = 0 [pid 5064] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./67/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./67/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./67/file0") = 0 [pid 5064] umount2("./67/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./67/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./67/cgroup") = 0 [pid 5064] umount2("./67/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./67/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./67/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./67") = 0 [pid 5064] mkdir("./68", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5212 attached , child_tidptr=0x555555a8a650) = 138 [pid 5212] set_robust_list(0x555555a8a660, 24) = 0 [pid 5212] chdir("./68") = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5212] setpgid(0, 0) = 0 [pid 5212] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5212] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5212] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5212] close(3) = 0 [pid 5212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5212] mkdir("./file0", 000) = 0 [pid 5212] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5212] open("./file0", O_RDONLY) = 3 [pid 5212] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5212] write(4, "-pids ", 6) = 6 [pid 5212] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5212] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5213 attached ) = 139 [pid 5212] ptrace(PTRACE_ATTACH, 139) = -1 EPERM (Operation not permitted) [pid 5212] close(3) = 0 [pid 5212] close(4) = 0 [pid 5212] close(5) = -1 EBADF (Bad file descriptor) [pid 5212] close(6) = -1 EBADF (Bad file descriptor) [pid 5212] close(7) = -1 EBADF (Bad file descriptor) [pid 5212] close(8) = -1 EBADF (Bad file descriptor) [pid 5212] close(9) = -1 EBADF (Bad file descriptor) [pid 5212] close(10) = -1 EBADF (Bad file descriptor) [pid 5212] close(11) = -1 EBADF (Bad file descriptor) [pid 5212] close(12) = -1 EBADF (Bad file descriptor) [pid 5212] close(13) = -1 EBADF (Bad file descriptor) [pid 5212] close(14) = -1 EBADF (Bad file descriptor) [pid 5212] close(15) = -1 EBADF (Bad file descriptor) [pid 5212] close(16) = -1 EBADF (Bad file descriptor) [pid 5212] close(17) = -1 EBADF (Bad file descriptor) [pid 5212] close(18) = -1 EBADF (Bad file descriptor) [pid 5212] close(19) = -1 EBADF (Bad file descriptor) [pid 5212] close(20) = -1 EBADF (Bad file descriptor) [pid 5212] close(21) = -1 EBADF (Bad file descriptor) [pid 5212] close(22) = -1 EBADF (Bad file descriptor) [pid 5212] close(23) = -1 EBADF (Bad file descriptor) [pid 5212] close(24) = -1 EBADF (Bad file descriptor) [pid 5212] close(25) = -1 EBADF (Bad file descriptor) [pid 5212] close(26) = -1 EBADF (Bad file descriptor) [pid 5212] close(27) = -1 EBADF (Bad file descriptor) [pid 5212] close(28) = -1 EBADF (Bad file descriptor) [pid 5212] close(29) = -1 EBADF (Bad file descriptor) [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=138, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./68/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./68/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./68/cgroup.cpu") = 0 [pid 5064] umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./68/binderfs" [pid 5213] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5213] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=139, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./68/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./68/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./68/file0") = 0 [pid 5064] umount2("./68/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./68/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./68/cgroup") = 0 [pid 5064] umount2("./68/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./68/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./68/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./68") = 0 [pid 5064] mkdir("./69", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5214 attached , child_tidptr=0x555555a8a650) = 140 [pid 5214] set_robust_list(0x555555a8a660, 24) = 0 [pid 5214] chdir("./69") = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5214] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5214] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5214] mkdir("./file0", 000) = 0 [pid 5214] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5214] open("./file0", O_RDONLY) = 3 [pid 5214] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5214] write(4, "-pids ", 6) = 6 [pid 5214] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5214] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5215 attached ) = 141 [pid 5214] ptrace(PTRACE_ATTACH, 141) = -1 EPERM (Operation not permitted) [pid 5214] close(3) = 0 [pid 5214] close(4) = 0 [pid 5214] close(5) = -1 EBADF (Bad file descriptor) [pid 5214] close(6) = -1 EBADF (Bad file descriptor) [pid 5214] close(7) = -1 EBADF (Bad file descriptor) [pid 5214] close(8) = -1 EBADF (Bad file descriptor) [pid 5214] close(9) = -1 EBADF (Bad file descriptor) [pid 5214] close(10) = -1 EBADF (Bad file descriptor) [pid 5214] close(11) = -1 EBADF (Bad file descriptor) [pid 5214] close(12) = -1 EBADF (Bad file descriptor) [pid 5214] close(13) = -1 EBADF (Bad file descriptor) [pid 5214] close(14) = -1 EBADF (Bad file descriptor) [pid 5214] close(15) = -1 EBADF (Bad file descriptor) [pid 5214] close(16) = -1 EBADF (Bad file descriptor) [pid 5214] close(17) = -1 EBADF (Bad file descriptor) [pid 5214] close(18) = -1 EBADF (Bad file descriptor) [pid 5214] close(19) = -1 EBADF (Bad file descriptor) [pid 5214] close(20) = -1 EBADF (Bad file descriptor) [pid 5214] close(21) = -1 EBADF (Bad file descriptor) [pid 5214] close(22) = -1 EBADF (Bad file descriptor) [pid 5214] close(23) = -1 EBADF (Bad file descriptor) [pid 5214] close(24) = -1 EBADF (Bad file descriptor) [pid 5214] close(25) = -1 EBADF (Bad file descriptor) [pid 5214] close(26) = -1 EBADF (Bad file descriptor) [pid 5214] close(27) = -1 EBADF (Bad file descriptor) [pid 5214] close(28) = -1 EBADF (Bad file descriptor) [pid 5214] close(29) = -1 EBADF (Bad file descriptor) [pid 5214] exit_group(0) = ? [pid 5214] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=140, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./69/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./69/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./69/cgroup.cpu") = 0 [pid 5064] umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./69/binderfs") = 0 [pid 5064] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5215] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5215] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./69/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5215] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=141, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] openat(AT_FDCWD, "./69/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./69/file0") = 0 [pid 5064] umount2("./69/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./69/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./69/cgroup") = 0 [pid 5064] umount2("./69/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./69/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./69/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./69") = 0 [pid 5064] mkdir("./70", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5216 attached , child_tidptr=0x555555a8a650) = 142 [pid 5216] set_robust_list(0x555555a8a660, 24) = 0 [pid 5216] chdir("./70") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 0 [pid 5216] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5216] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5216] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5216] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5216] mkdir("./file0", 000) = 0 [pid 5216] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5216] open("./file0", O_RDONLY) = 3 [pid 5216] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5216] write(4, "-pids ", 6) = 6 [pid 5216] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5216] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5217 attached ) = 143 [pid 5216] ptrace(PTRACE_ATTACH, 143) = -1 EPERM (Operation not permitted) [pid 5216] close(3) = 0 [pid 5216] close(4) = 0 [pid 5216] close(5) = -1 EBADF (Bad file descriptor) [pid 5216] close(6) = -1 EBADF (Bad file descriptor) [pid 5216] close(7) = -1 EBADF (Bad file descriptor) [pid 5216] close(8) = -1 EBADF (Bad file descriptor) [pid 5216] close(9) = -1 EBADF (Bad file descriptor) [pid 5216] close(10) = -1 EBADF (Bad file descriptor) [pid 5216] close(11) = -1 EBADF (Bad file descriptor) [pid 5216] close(12) = -1 EBADF (Bad file descriptor) [pid 5216] close(13) = -1 EBADF (Bad file descriptor) [pid 5216] close(14) = -1 EBADF (Bad file descriptor) [pid 5216] close(15) = -1 EBADF (Bad file descriptor) [pid 5216] close(16) = -1 EBADF (Bad file descriptor) [pid 5216] close(17) = -1 EBADF (Bad file descriptor) [pid 5216] close(18) = -1 EBADF (Bad file descriptor) [pid 5216] close(19) = -1 EBADF (Bad file descriptor) [pid 5216] close(20) = -1 EBADF (Bad file descriptor) [pid 5216] close(21) = -1 EBADF (Bad file descriptor) [pid 5216] close(22) = -1 EBADF (Bad file descriptor) [pid 5216] close(23) = -1 EBADF (Bad file descriptor) [pid 5216] close(24) = -1 EBADF (Bad file descriptor) [pid 5216] close(25) = -1 EBADF (Bad file descriptor) [pid 5216] close(26) = -1 EBADF (Bad file descriptor) [pid 5216] close(27) = -1 EBADF (Bad file descriptor) [pid 5216] close(28) = -1 EBADF (Bad file descriptor) [pid 5216] close(29) = -1 EBADF (Bad file descriptor) [pid 5216] exit_group(0) = ? [pid 5216] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=142, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./70/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./70/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./70/cgroup.cpu") = 0 [pid 5064] umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./70/binderfs") = 0 [pid 5064] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./70/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./70/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", [pid 5217] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5217] <... exit resumed>) = ? [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5217] +++ exited with 0 +++ [pid 5064] close(4) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=143, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] rmdir("./70/file0") = 0 [pid 5064] umount2("./70/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./70/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./70/cgroup") = 0 [pid 5064] umount2("./70/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./70/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./70/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./70") = 0 [pid 5064] mkdir("./71", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5218 attached , child_tidptr=0x555555a8a650) = 144 [pid 5218] set_robust_list(0x555555a8a660, 24) = 0 [pid 5218] chdir("./71") = 0 [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5218] setpgid(0, 0) = 0 [pid 5218] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5218] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5218] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5218] write(3, "1000", 4) = 4 [pid 5218] close(3) = 0 [pid 5218] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5218] mkdir("./file0", 000) = 0 [pid 5218] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5218] open("./file0", O_RDONLY) = 3 [pid 5218] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5218] write(4, "-pids ", 6) = 6 [pid 5218] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5218] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5220 attached ) = 145 [pid 5218] ptrace(PTRACE_ATTACH, 145) = -1 EPERM (Operation not permitted) [pid 5218] close(3) = 0 [pid 5218] close(4) = 0 [pid 5218] close(5) = -1 EBADF (Bad file descriptor) [pid 5218] close(6) = -1 EBADF (Bad file descriptor) [pid 5218] close(7) = -1 EBADF (Bad file descriptor) [pid 5218] close(8) = -1 EBADF (Bad file descriptor) [pid 5218] close(9) = -1 EBADF (Bad file descriptor) [pid 5218] close(10) = -1 EBADF (Bad file descriptor) [pid 5218] close(11) = -1 EBADF (Bad file descriptor) [pid 5218] close(12) = -1 EBADF (Bad file descriptor) [pid 5218] close(13) = -1 EBADF (Bad file descriptor) [pid 5218] close(14) = -1 EBADF (Bad file descriptor) [pid 5218] close(15) = -1 EBADF (Bad file descriptor) [pid 5218] close(16) = -1 EBADF (Bad file descriptor) [pid 5218] close(17) = -1 EBADF (Bad file descriptor) [pid 5218] close(18) = -1 EBADF (Bad file descriptor) [pid 5218] close(19) = -1 EBADF (Bad file descriptor) [pid 5218] close(20) = -1 EBADF (Bad file descriptor) [pid 5218] close(21) = -1 EBADF (Bad file descriptor) [pid 5218] close(22) = -1 EBADF (Bad file descriptor) [pid 5218] close(23) = -1 EBADF (Bad file descriptor) [pid 5218] close(24) = -1 EBADF (Bad file descriptor) [pid 5218] close(25) = -1 EBADF (Bad file descriptor) [pid 5218] close(26) = -1 EBADF (Bad file descriptor) [pid 5218] close(27) = -1 EBADF (Bad file descriptor) [pid 5218] close(28) = -1 EBADF (Bad file descriptor) [pid 5218] close(29) = -1 EBADF (Bad file descriptor) [pid 5218] exit_group(0) = ? [pid 5218] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=144, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5220] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./71/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./71/cgroup.cpu", [pid 5220] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./71/cgroup.cpu") = 0 [pid 5064] umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5220] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=145, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./71/binderfs") = 0 [pid 5064] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./71/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./71/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./71/file0") = 0 [pid 5064] umount2("./71/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./71/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./71/cgroup") = 0 [pid 5064] umount2("./71/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./71/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./71/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./71") = 0 [pid 5064] mkdir("./72", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 146 ./strace-static-x86_64: Process 5221 attached [pid 5221] set_robust_list(0x555555a8a660, 24) = 0 [pid 5221] chdir("./72") = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5221] setpgid(0, 0) = 0 [pid 5221] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5221] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5221] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5221] write(3, "1000", 4) = 4 [pid 5221] close(3) = 0 [pid 5221] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5221] mkdir("./file0", 000) = 0 [pid 5221] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5221] open("./file0", O_RDONLY) = 3 [pid 5221] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5221] write(4, "-pids ", 6) = 6 [pid 5221] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5221] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5222 attached ) = 147 [pid 5221] ptrace(PTRACE_ATTACH, 147) = -1 EPERM (Operation not permitted) [pid 5221] close(3) = 0 [pid 5221] close(4) = 0 [pid 5221] close(5) = -1 EBADF (Bad file descriptor) [pid 5221] close(6) = -1 EBADF (Bad file descriptor) [pid 5221] close(7) = -1 EBADF (Bad file descriptor) [pid 5221] close(8) = -1 EBADF (Bad file descriptor) [pid 5221] close(9) = -1 EBADF (Bad file descriptor) [pid 5221] close(10) = -1 EBADF (Bad file descriptor) [pid 5221] close(11) = -1 EBADF (Bad file descriptor) [pid 5221] close(12) = -1 EBADF (Bad file descriptor) [pid 5221] close(13) = -1 EBADF (Bad file descriptor) [pid 5221] close(14) = -1 EBADF (Bad file descriptor) [pid 5221] close(15) = -1 EBADF (Bad file descriptor) [pid 5221] close(16) = -1 EBADF (Bad file descriptor) [pid 5221] close(17) = -1 EBADF (Bad file descriptor) [pid 5221] close(18) = -1 EBADF (Bad file descriptor) [pid 5221] close(19) = -1 EBADF (Bad file descriptor) [pid 5221] close(20) = -1 EBADF (Bad file descriptor) [pid 5221] close(21) = -1 EBADF (Bad file descriptor) [pid 5221] close(22) = -1 EBADF (Bad file descriptor) [pid 5221] close(23) = -1 EBADF (Bad file descriptor) [pid 5221] close(24) = -1 EBADF (Bad file descriptor) [pid 5221] close(25) = -1 EBADF (Bad file descriptor) [pid 5221] close(26) = -1 EBADF (Bad file descriptor) [pid 5221] close(27) = -1 EBADF (Bad file descriptor) [pid 5221] close(28) = -1 EBADF (Bad file descriptor) [pid 5221] close(29) = -1 EBADF (Bad file descriptor) [pid 5221] exit_group(0) = ? [pid 5221] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=146, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", [pid 5222] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5222] <... exit resumed>) = ? [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./72/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5222] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./72/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./72/cgroup.cpu") = 0 [pid 5064] umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./72/binderfs") = 0 [pid 5064] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./72/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./72/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./72/file0") = 0 [pid 5064] umount2("./72/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./72/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./72/cgroup") = 0 [pid 5064] umount2("./72/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./72/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./72/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./72") = 0 [pid 5064] mkdir("./73", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 148 ./strace-static-x86_64: Process 5224 attached [pid 5224] set_robust_list(0x555555a8a660, 24) = 0 [pid 5224] chdir("./73") = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5224] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5224] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5224] mkdir("./file0", 000) = 0 [pid 5224] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5224] open("./file0", O_RDONLY) = 3 [pid 5224] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5224] write(4, "-pids ", 6) = 6 [pid 5224] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5224] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5225 attached ) = 149 [pid 5224] ptrace(PTRACE_ATTACH, 149) = -1 EPERM (Operation not permitted) [pid 5224] close(3) = 0 [pid 5224] close(4) = 0 [pid 5224] close(5) = -1 EBADF (Bad file descriptor) [pid 5224] close(6) = -1 EBADF (Bad file descriptor) [pid 5224] close(7) = -1 EBADF (Bad file descriptor) [pid 5224] close(8) = -1 EBADF (Bad file descriptor) [pid 5224] close(9) = -1 EBADF (Bad file descriptor) [pid 5224] close(10) = -1 EBADF (Bad file descriptor) [pid 5224] close(11) = -1 EBADF (Bad file descriptor) [pid 5224] close(12) = -1 EBADF (Bad file descriptor) [pid 5224] close(13) = -1 EBADF (Bad file descriptor) [pid 5224] close(14) = -1 EBADF (Bad file descriptor) [pid 5224] close(15) = -1 EBADF (Bad file descriptor) [pid 5224] close(16) = -1 EBADF (Bad file descriptor) [pid 5224] close(17) = -1 EBADF (Bad file descriptor) [pid 5224] close(18) = -1 EBADF (Bad file descriptor) [pid 5224] close(19) = -1 EBADF (Bad file descriptor) [pid 5224] close(20) = -1 EBADF (Bad file descriptor) [pid 5224] close(21) = -1 EBADF (Bad file descriptor) [pid 5224] close(22) = -1 EBADF (Bad file descriptor) [pid 5224] close(23) = -1 EBADF (Bad file descriptor) [pid 5224] close(24) = -1 EBADF (Bad file descriptor) [pid 5224] close(25) = -1 EBADF (Bad file descriptor) [pid 5224] close(26) = -1 EBADF (Bad file descriptor) [pid 5224] close(27) = -1 EBADF (Bad file descriptor) [pid 5224] close(28) = -1 EBADF (Bad file descriptor) [pid 5224] close(29) = -1 EBADF (Bad file descriptor) [pid 5224] exit_group(0) = ? [pid 5224] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=148, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./73", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./73/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./73/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./73/cgroup.cpu") = 0 [pid 5064] umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5225] exit(0) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./73/binderfs") = 0 [pid 5225] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./73/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./73/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./73/file0") = 0 [pid 5064] umount2("./73/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./73/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./73/cgroup") = 0 [pid 5064] umount2("./73/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./73/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./73/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./73") = 0 [pid 5064] mkdir("./74", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5226 attached , child_tidptr=0x555555a8a650) = 150 [pid 5226] set_robust_list(0x555555a8a660, 24) = 0 [pid 5226] chdir("./74") = 0 [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5226] setpgid(0, 0) = 0 [pid 5226] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5226] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5226] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5226] write(3, "1000", 4) = 4 [pid 5226] close(3) = 0 [pid 5226] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5226] mkdir("./file0", 000) = 0 [pid 5226] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5226] open("./file0", O_RDONLY) = 3 [pid 5226] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5226] write(4, "-pids ", 6) = 6 [pid 5226] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5226] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5228 attached ) = 151 [pid 5226] ptrace(PTRACE_ATTACH, 151) = -1 EPERM (Operation not permitted) [pid 5226] close(3) = 0 [pid 5226] close(4) = 0 [pid 5226] close(5) = -1 EBADF (Bad file descriptor) [pid 5226] close(6) = -1 EBADF (Bad file descriptor) [pid 5226] close(7) = -1 EBADF (Bad file descriptor) [pid 5226] close(8) = -1 EBADF (Bad file descriptor) [pid 5226] close(9) = -1 EBADF (Bad file descriptor) [pid 5226] close(10) = -1 EBADF (Bad file descriptor) [pid 5226] close(11) = -1 EBADF (Bad file descriptor) [pid 5226] close(12) = -1 EBADF (Bad file descriptor) [pid 5226] close(13) = -1 EBADF (Bad file descriptor) [pid 5226] close(14) = -1 EBADF (Bad file descriptor) [pid 5226] close(15) = -1 EBADF (Bad file descriptor) [pid 5226] close(16) = -1 EBADF (Bad file descriptor) [pid 5226] close(17) = -1 EBADF (Bad file descriptor) [pid 5226] close(18) = -1 EBADF (Bad file descriptor) [pid 5226] close(19) = -1 EBADF (Bad file descriptor) [pid 5226] close(20) = -1 EBADF (Bad file descriptor) [pid 5226] close(21) = -1 EBADF (Bad file descriptor) [pid 5226] close(22) = -1 EBADF (Bad file descriptor) [pid 5226] close(23) = -1 EBADF (Bad file descriptor) [pid 5226] close(24) = -1 EBADF (Bad file descriptor) [pid 5226] close(25) = -1 EBADF (Bad file descriptor) [pid 5226] close(26) = -1 EBADF (Bad file descriptor) [pid 5226] close(27) = -1 EBADF (Bad file descriptor) [pid 5226] close(28) = -1 EBADF (Bad file descriptor) [pid 5226] close(29) = -1 EBADF (Bad file descriptor) [pid 5226] exit_group(0) = ? [pid 5226] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=150, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5228] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5228] <... exit resumed>) = ? [pid 5064] openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5228] +++ exited with 0 +++ [pid 5064] <... openat resumed>) = 3 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=151, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./74/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./74/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./74/cgroup.cpu") = 0 [pid 5064] umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./74/binderfs") = 0 [pid 5064] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./74/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./74/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./74/file0") = 0 [pid 5064] umount2("./74/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./74/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./74/cgroup") = 0 [pid 5064] umount2("./74/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./74/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./74/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./74") = 0 [pid 5064] mkdir("./75", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5232 attached , child_tidptr=0x555555a8a650) = 152 [pid 5232] set_robust_list(0x555555a8a660, 24) = 0 [pid 5232] chdir("./75") = 0 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] setpgid(0, 0) = 0 [pid 5232] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5232] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5232] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5232] write(3, "1000", 4) = 4 [pid 5232] close(3) = 0 [pid 5232] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5232] mkdir("./file0", 000) = 0 [pid 5232] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5232] open("./file0", O_RDONLY) = 3 [pid 5232] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5232] write(4, "-pids ", 6) = 6 [pid 5232] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5232] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5233 attached ) = 153 [pid 5232] ptrace(PTRACE_ATTACH, 153) = -1 EPERM (Operation not permitted) [pid 5232] close(3) = 0 [pid 5232] close(4) = 0 [pid 5232] close(5) = -1 EBADF (Bad file descriptor) [pid 5232] close(6) = -1 EBADF (Bad file descriptor) [pid 5232] close(7) = -1 EBADF (Bad file descriptor) [pid 5232] close(8) = -1 EBADF (Bad file descriptor) [pid 5232] close(9) = -1 EBADF (Bad file descriptor) [pid 5232] close(10) = -1 EBADF (Bad file descriptor) [pid 5232] close(11) = -1 EBADF (Bad file descriptor) [pid 5232] close(12) = -1 EBADF (Bad file descriptor) [pid 5232] close(13) = -1 EBADF (Bad file descriptor) [pid 5232] close(14) = -1 EBADF (Bad file descriptor) [pid 5232] close(15) = -1 EBADF (Bad file descriptor) [pid 5232] close(16) = -1 EBADF (Bad file descriptor) [pid 5232] close(17) = -1 EBADF (Bad file descriptor) [pid 5232] close(18) = -1 EBADF (Bad file descriptor) [pid 5232] close(19) = -1 EBADF (Bad file descriptor) [pid 5232] close(20) = -1 EBADF (Bad file descriptor) [pid 5232] close(21) = -1 EBADF (Bad file descriptor) [pid 5232] close(22) = -1 EBADF (Bad file descriptor) [pid 5232] close(23) = -1 EBADF (Bad file descriptor) [pid 5232] close(24) = -1 EBADF (Bad file descriptor) [pid 5232] close(25) = -1 EBADF (Bad file descriptor) [pid 5232] close(26) = -1 EBADF (Bad file descriptor) [pid 5232] close(27) = -1 EBADF (Bad file descriptor) [pid 5232] close(28) = -1 EBADF (Bad file descriptor) [pid 5232] close(29) = -1 EBADF (Bad file descriptor) [pid 5232] exit_group(0) = ? [pid 5232] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=152, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./75/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./75/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./75/cgroup.cpu") = 0 [pid 5064] umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5233] exit(0 [pid 5064] unlink("./75/binderfs" [pid 5233] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5233] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=153, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./75/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./75/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./75/file0") = 0 [pid 5064] umount2("./75/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./75/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./75/cgroup") = 0 [pid 5064] umount2("./75/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./75/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./75/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./75") = 0 [pid 5064] mkdir("./76", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5234 attached , child_tidptr=0x555555a8a650) = 154 [pid 5234] set_robust_list(0x555555a8a660, 24) = 0 [pid 5234] chdir("./76") = 0 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setpgid(0, 0) = 0 [pid 5234] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5234] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5234] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1000", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5234] mkdir("./file0", 000) = 0 [pid 5234] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5234] open("./file0", O_RDONLY) = 3 [pid 5234] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5234] write(4, "-pids ", 6) = 6 [pid 5234] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5234] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5235 attached ) = 155 [pid 5234] ptrace(PTRACE_ATTACH, 155) = -1 EPERM (Operation not permitted) [pid 5234] close(3) = 0 [pid 5234] close(4) = 0 [pid 5234] close(5) = -1 EBADF (Bad file descriptor) [pid 5234] close(6) = -1 EBADF (Bad file descriptor) [pid 5234] close(7) = -1 EBADF (Bad file descriptor) [pid 5234] close(8) = -1 EBADF (Bad file descriptor) [pid 5234] close(9) = -1 EBADF (Bad file descriptor) [pid 5234] close(10) = -1 EBADF (Bad file descriptor) [pid 5234] close(11) = -1 EBADF (Bad file descriptor) [pid 5234] close(12) = -1 EBADF (Bad file descriptor) [pid 5234] close(13) = -1 EBADF (Bad file descriptor) [pid 5234] close(14) = -1 EBADF (Bad file descriptor) [pid 5234] close(15) = -1 EBADF (Bad file descriptor) [pid 5234] close(16) = -1 EBADF (Bad file descriptor) [pid 5234] close(17) = -1 EBADF (Bad file descriptor) [pid 5234] close(18) = -1 EBADF (Bad file descriptor) [pid 5234] close(19) = -1 EBADF (Bad file descriptor) [pid 5234] close(20) = -1 EBADF (Bad file descriptor) [pid 5234] close(21) = -1 EBADF (Bad file descriptor) [pid 5234] close(22) = -1 EBADF (Bad file descriptor) [pid 5234] close(23) = -1 EBADF (Bad file descriptor) [pid 5234] close(24) = -1 EBADF (Bad file descriptor) [pid 5234] close(25) = -1 EBADF (Bad file descriptor) [pid 5234] close(26) = -1 EBADF (Bad file descriptor) [pid 5234] close(27) = -1 EBADF (Bad file descriptor) [pid 5234] close(28) = -1 EBADF (Bad file descriptor) [pid 5234] close(29) = -1 EBADF (Bad file descriptor) [pid 5234] exit_group(0) = ? [pid 5234] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=154, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./76/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./76/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./76/cgroup.cpu" [pid 5235] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5235] <... exit resumed>) = ? [pid 5064] umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5235] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=155, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./76/binderfs") = 0 [pid 5064] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./76/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./76/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./76/file0") = 0 [pid 5064] umount2("./76/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./76/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./76/cgroup") = 0 [pid 5064] umount2("./76/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./76/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./76/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./76") = 0 [pid 5064] mkdir("./77", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5236 attached , child_tidptr=0x555555a8a650) = 156 [pid 5236] set_robust_list(0x555555a8a660, 24) = 0 [pid 5236] chdir("./77") = 0 [pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5236] setpgid(0, 0) = 0 [pid 5236] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5236] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5236] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5236] write(3, "1000", 4) = 4 [pid 5236] close(3) = 0 [pid 5236] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5236] mkdir("./file0", 000) = 0 [pid 5236] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5236] open("./file0", O_RDONLY) = 3 [pid 5236] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5236] write(4, "-pids ", 6) = 6 [pid 5236] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5236] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5237 attached ) = 157 [pid 5236] ptrace(PTRACE_ATTACH, 157) = -1 EPERM (Operation not permitted) [pid 5236] close(3) = 0 [pid 5236] close(4) = 0 [pid 5236] close(5) = -1 EBADF (Bad file descriptor) [pid 5236] close(6) = -1 EBADF (Bad file descriptor) [pid 5236] close(7) = -1 EBADF (Bad file descriptor) [pid 5236] close(8) = -1 EBADF (Bad file descriptor) [pid 5236] close(9) = -1 EBADF (Bad file descriptor) [pid 5236] close(10) = -1 EBADF (Bad file descriptor) [pid 5236] close(11) = -1 EBADF (Bad file descriptor) [pid 5236] close(12) = -1 EBADF (Bad file descriptor) [pid 5236] close(13) = -1 EBADF (Bad file descriptor) [pid 5236] close(14) = -1 EBADF (Bad file descriptor) [pid 5236] close(15) = -1 EBADF (Bad file descriptor) [pid 5236] close(16) = -1 EBADF (Bad file descriptor) [pid 5236] close(17) = -1 EBADF (Bad file descriptor) [pid 5236] close(18) = -1 EBADF (Bad file descriptor) [pid 5236] close(19) = -1 EBADF (Bad file descriptor) [pid 5236] close(20) = -1 EBADF (Bad file descriptor) [pid 5236] close(21) = -1 EBADF (Bad file descriptor) [pid 5236] close(22) = -1 EBADF (Bad file descriptor) [pid 5236] close(23) = -1 EBADF (Bad file descriptor) [pid 5236] close(24) = -1 EBADF (Bad file descriptor) [pid 5236] close(25) = -1 EBADF (Bad file descriptor) [pid 5236] close(26) = -1 EBADF (Bad file descriptor) [pid 5236] close(27) = -1 EBADF (Bad file descriptor) [pid 5236] close(28) = -1 EBADF (Bad file descriptor) [pid 5236] close(29) = -1 EBADF (Bad file descriptor) [pid 5236] exit_group(0) = ? [pid 5236] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=156, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./77/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./77/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./77/cgroup.cpu") = 0 [pid 5064] umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./77/binderfs") = 0 [pid 5237] exit(0 [pid 5064] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5237] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./77/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5237] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=157, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] openat(AT_FDCWD, "./77/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./77/file0") = 0 [pid 5064] umount2("./77/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./77/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./77/cgroup") = 0 [pid 5064] umount2("./77/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./77/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./77/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./77") = 0 [pid 5064] mkdir("./78", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5238 attached [pid 5238] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 158 [pid 5238] <... set_robust_list resumed>) = 0 [pid 5238] chdir("./78") = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5238] setpgid(0, 0) = 0 [pid 5238] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5238] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5238] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1000", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5238] mkdir("./file0", 000) = 0 [pid 5238] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5238] open("./file0", O_RDONLY) = 3 [pid 5238] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5238] write(4, "-pids ", 6) = 6 [pid 5238] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5238] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5240 attached ) = 159 [pid 5238] ptrace(PTRACE_ATTACH, 159) = -1 EPERM (Operation not permitted) [pid 5238] close(3) = 0 [pid 5238] close(4) = 0 [pid 5238] close(5) = -1 EBADF (Bad file descriptor) [pid 5238] close(6) = -1 EBADF (Bad file descriptor) [pid 5238] close(7) = -1 EBADF (Bad file descriptor) [pid 5238] close(8) = -1 EBADF (Bad file descriptor) [pid 5238] close(9) = -1 EBADF (Bad file descriptor) [pid 5238] close(10) = -1 EBADF (Bad file descriptor) [pid 5238] close(11) = -1 EBADF (Bad file descriptor) [pid 5238] close(12) = -1 EBADF (Bad file descriptor) [pid 5238] close(13) = -1 EBADF (Bad file descriptor) [pid 5238] close(14) = -1 EBADF (Bad file descriptor) [pid 5238] close(15) = -1 EBADF (Bad file descriptor) [pid 5238] close(16) = -1 EBADF (Bad file descriptor) [pid 5238] close(17) = -1 EBADF (Bad file descriptor) [pid 5238] close(18) = -1 EBADF (Bad file descriptor) [pid 5238] close(19) = -1 EBADF (Bad file descriptor) [pid 5238] close(20) = -1 EBADF (Bad file descriptor) [pid 5238] close(21) = -1 EBADF (Bad file descriptor) [pid 5238] close(22) = -1 EBADF (Bad file descriptor) [pid 5238] close(23) = -1 EBADF (Bad file descriptor) [pid 5238] close(24) = -1 EBADF (Bad file descriptor) [pid 5238] close(25) = -1 EBADF (Bad file descriptor) [pid 5238] close(26) = -1 EBADF (Bad file descriptor) [pid 5238] close(27) = -1 EBADF (Bad file descriptor) [pid 5238] close(28) = -1 EBADF (Bad file descriptor) [pid 5238] close(29) = -1 EBADF (Bad file descriptor) [pid 5238] exit_group(0) = ? [pid 5238] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=158, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./78/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./78/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./78/cgroup.cpu") = 0 [pid 5064] umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./78/binderfs") = 0 [pid 5064] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5240] exit(0 [pid 5064] <... umount2 resumed>) = 0 [pid 5240] <... exit resumed>) = ? [pid 5064] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./78/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5240] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./78/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./78/file0") = 0 [pid 5064] umount2("./78/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./78/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./78/cgroup") = 0 [pid 5064] umount2("./78/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./78/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./78/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./78") = 0 [pid 5064] mkdir("./79", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 160 ./strace-static-x86_64: Process 5241 attached [pid 5241] set_robust_list(0x555555a8a660, 24) = 0 [pid 5241] chdir("./79") = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5241] setpgid(0, 0) = 0 [pid 5241] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5241] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5241] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5241] write(3, "1000", 4) = 4 [pid 5241] close(3) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5241] mkdir("./file0", 000) = 0 [pid 5241] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5241] open("./file0", O_RDONLY) = 3 [pid 5241] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5241] write(4, "-pids ", 6) = 6 [pid 5241] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5241] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5242 attached ) = 161 [pid 5241] ptrace(PTRACE_ATTACH, 161) = -1 EPERM (Operation not permitted) [pid 5241] close(3) = 0 [pid 5241] close(4) = 0 [pid 5241] close(5) = -1 EBADF (Bad file descriptor) [pid 5241] close(6) = -1 EBADF (Bad file descriptor) [pid 5241] close(7) = -1 EBADF (Bad file descriptor) [pid 5241] close(8) = -1 EBADF (Bad file descriptor) [pid 5241] close(9) = -1 EBADF (Bad file descriptor) [pid 5241] close(10) = -1 EBADF (Bad file descriptor) [pid 5241] close(11) = -1 EBADF (Bad file descriptor) [pid 5241] close(12) = -1 EBADF (Bad file descriptor) [pid 5241] close(13) = -1 EBADF (Bad file descriptor) [pid 5241] close(14) = -1 EBADF (Bad file descriptor) [pid 5241] close(15) = -1 EBADF (Bad file descriptor) [pid 5241] close(16) = -1 EBADF (Bad file descriptor) [pid 5241] close(17) = -1 EBADF (Bad file descriptor) [pid 5241] close(18) = -1 EBADF (Bad file descriptor) [pid 5241] close(19) = -1 EBADF (Bad file descriptor) [pid 5241] close(20) = -1 EBADF (Bad file descriptor) [pid 5241] close(21) = -1 EBADF (Bad file descriptor) [pid 5241] close(22) = -1 EBADF (Bad file descriptor) [pid 5241] close(23) = -1 EBADF (Bad file descriptor) [pid 5241] close(24) = -1 EBADF (Bad file descriptor) [pid 5241] close(25) = -1 EBADF (Bad file descriptor) [pid 5241] close(26) = -1 EBADF (Bad file descriptor) [pid 5241] close(27) = -1 EBADF (Bad file descriptor) [pid 5241] close(28) = -1 EBADF (Bad file descriptor) [pid 5241] close(29) = -1 EBADF (Bad file descriptor) [pid 5241] exit_group(0) = ? [pid 5241] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=160, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./79/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./79/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./79/cgroup.cpu") = 0 [pid 5064] umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./79/binderfs") = 0 [pid 5064] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5242] exit(0) = ? [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./79/file0", [pid 5242] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=161, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./79/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./79/file0") = 0 [pid 5064] umount2("./79/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./79/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./79/cgroup") = 0 [pid 5064] umount2("./79/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./79/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./79/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./79") = 0 [pid 5064] mkdir("./80", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5243 attached , child_tidptr=0x555555a8a650) = 162 [pid 5243] set_robust_list(0x555555a8a660, 24) = 0 [pid 5243] chdir("./80") = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 0 [pid 5243] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5243] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5243] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5243] write(3, "1000", 4) = 4 [pid 5243] close(3) = 0 [pid 5243] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5243] mkdir("./file0", 000) = 0 [pid 5243] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5243] open("./file0", O_RDONLY) = 3 [pid 5243] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5243] write(4, "-pids ", 6) = 6 [pid 5243] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5243] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5244 attached ) = 163 [pid 5243] ptrace(PTRACE_ATTACH, 163) = -1 EPERM (Operation not permitted) [pid 5243] close(3) = 0 [pid 5243] close(4) = 0 [pid 5243] close(5) = -1 EBADF (Bad file descriptor) [pid 5243] close(6) = -1 EBADF (Bad file descriptor) [pid 5243] close(7) = -1 EBADF (Bad file descriptor) [pid 5243] close(8) = -1 EBADF (Bad file descriptor) [pid 5243] close(9) = -1 EBADF (Bad file descriptor) [pid 5243] close(10) = -1 EBADF (Bad file descriptor) [pid 5243] close(11) = -1 EBADF (Bad file descriptor) [pid 5243] close(12) = -1 EBADF (Bad file descriptor) [pid 5243] close(13) = -1 EBADF (Bad file descriptor) [pid 5243] close(14) = -1 EBADF (Bad file descriptor) [pid 5243] close(15) = -1 EBADF (Bad file descriptor) [pid 5243] close(16) = -1 EBADF (Bad file descriptor) [pid 5243] close(17) = -1 EBADF (Bad file descriptor) [pid 5243] close(18) = -1 EBADF (Bad file descriptor) [pid 5243] close(19) = -1 EBADF (Bad file descriptor) [pid 5243] close(20) = -1 EBADF (Bad file descriptor) [pid 5243] close(21) = -1 EBADF (Bad file descriptor) [pid 5243] close(22) = -1 EBADF (Bad file descriptor) [pid 5243] close(23) = -1 EBADF (Bad file descriptor) [pid 5243] close(24) = -1 EBADF (Bad file descriptor) [pid 5243] close(25) = -1 EBADF (Bad file descriptor) [pid 5243] close(26) = -1 EBADF (Bad file descriptor) [pid 5243] close(27) = -1 EBADF (Bad file descriptor) [pid 5243] close(28) = -1 EBADF (Bad file descriptor) [pid 5243] close(29) = -1 EBADF (Bad file descriptor) [pid 5243] exit_group(0) = ? [pid 5243] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=162, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./80/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./80/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./80/cgroup.cpu") = 0 [pid 5064] umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./80/binderfs") = 0 [pid 5064] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5244] exit(0) = ? [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./80/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5244] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=163, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./80/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./80/file0") = 0 [pid 5064] umount2("./80/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./80/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./80/cgroup") = 0 [pid 5064] umount2("./80/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./80/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./80/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./80") = 0 [pid 5064] mkdir("./81", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5245 attached , child_tidptr=0x555555a8a650) = 164 [pid 5245] set_robust_list(0x555555a8a660, 24) = 0 [pid 5245] chdir("./81") = 0 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0) = 0 [pid 5245] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5245] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5245] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5245] write(3, "1000", 4) = 4 [pid 5245] close(3) = 0 [pid 5245] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5245] mkdir("./file0", 000) = 0 [pid 5245] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5245] open("./file0", O_RDONLY) = 3 [pid 5245] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5245] write(4, "-pids ", 6) = 6 [pid 5245] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5245] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5246 attached ) = 165 [pid 5245] ptrace(PTRACE_ATTACH, 165) = -1 EPERM (Operation not permitted) [pid 5245] close(3) = 0 [pid 5245] close(4) = 0 [pid 5245] close(5) = -1 EBADF (Bad file descriptor) [pid 5245] close(6) = -1 EBADF (Bad file descriptor) [pid 5245] close(7) = -1 EBADF (Bad file descriptor) [pid 5245] close(8) = -1 EBADF (Bad file descriptor) [pid 5245] close(9) = -1 EBADF (Bad file descriptor) [pid 5245] close(10) = -1 EBADF (Bad file descriptor) [pid 5245] close(11) = -1 EBADF (Bad file descriptor) [pid 5245] close(12) = -1 EBADF (Bad file descriptor) [pid 5245] close(13) = -1 EBADF (Bad file descriptor) [pid 5245] close(14) = -1 EBADF (Bad file descriptor) [pid 5245] close(15) = -1 EBADF (Bad file descriptor) [pid 5245] close(16) = -1 EBADF (Bad file descriptor) [pid 5245] close(17) = -1 EBADF (Bad file descriptor) [pid 5245] close(18) = -1 EBADF (Bad file descriptor) [pid 5245] close(19) = -1 EBADF (Bad file descriptor) [pid 5245] close(20) = -1 EBADF (Bad file descriptor) [pid 5245] close(21) = -1 EBADF (Bad file descriptor) [pid 5245] close(22) = -1 EBADF (Bad file descriptor) [pid 5245] close(23) = -1 EBADF (Bad file descriptor) [pid 5245] close(24) = -1 EBADF (Bad file descriptor) [pid 5245] close(25) = -1 EBADF (Bad file descriptor) [pid 5245] close(26) = -1 EBADF (Bad file descriptor) [pid 5245] close(27) = -1 EBADF (Bad file descriptor) [pid 5245] close(28) = -1 EBADF (Bad file descriptor) [pid 5245] close(29) = -1 EBADF (Bad file descriptor) [pid 5245] exit_group(0) = ? [pid 5245] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=164, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./81/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./81/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./81/cgroup.cpu") = 0 [pid 5246] exit(0 [pid 5064] umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5246] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./81/binderfs", [pid 5246] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=165, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./81/binderfs") = 0 [pid 5064] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./81/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./81/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./81/file0") = 0 [pid 5064] umount2("./81/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./81/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./81/cgroup") = 0 [pid 5064] umount2("./81/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./81/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./81/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./81") = 0 [pid 5064] mkdir("./82", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5247 attached , child_tidptr=0x555555a8a650) = 166 [pid 5247] set_robust_list(0x555555a8a660, 24) = 0 [pid 5247] chdir("./82") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0) = 0 [pid 5247] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5247] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5247] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5247] close(3) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5247] mkdir("./file0", 000) = 0 [pid 5247] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5247] open("./file0", O_RDONLY) = 3 [pid 5247] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5247] write(4, "-pids ", 6) = 6 [pid 5247] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5247] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5248 attached ) = 167 [pid 5247] ptrace(PTRACE_ATTACH, 167) = -1 EPERM (Operation not permitted) [pid 5247] close(3) = 0 [pid 5247] close(4) = 0 [pid 5247] close(5) = -1 EBADF (Bad file descriptor) [pid 5247] close(6) = -1 EBADF (Bad file descriptor) [pid 5247] close(7) = -1 EBADF (Bad file descriptor) [pid 5247] close(8) = -1 EBADF (Bad file descriptor) [pid 5247] close(9) = -1 EBADF (Bad file descriptor) [pid 5247] close(10) = -1 EBADF (Bad file descriptor) [pid 5247] close(11) = -1 EBADF (Bad file descriptor) [pid 5247] close(12) = -1 EBADF (Bad file descriptor) [pid 5247] close(13) = -1 EBADF (Bad file descriptor) [pid 5247] close(14) = -1 EBADF (Bad file descriptor) [pid 5247] close(15) = -1 EBADF (Bad file descriptor) [pid 5247] close(16) = -1 EBADF (Bad file descriptor) [pid 5247] close(17) = -1 EBADF (Bad file descriptor) [pid 5247] close(18) = -1 EBADF (Bad file descriptor) [pid 5247] close(19) = -1 EBADF (Bad file descriptor) [pid 5247] close(20) = -1 EBADF (Bad file descriptor) [pid 5247] close(21) = -1 EBADF (Bad file descriptor) [pid 5247] close(22) = -1 EBADF (Bad file descriptor) [pid 5247] close(23) = -1 EBADF (Bad file descriptor) [pid 5247] close(24) = -1 EBADF (Bad file descriptor) [pid 5247] close(25) = -1 EBADF (Bad file descriptor) [pid 5247] close(26) = -1 EBADF (Bad file descriptor) [pid 5247] close(27) = -1 EBADF (Bad file descriptor) [pid 5247] close(28) = -1 EBADF (Bad file descriptor) [pid 5247] close(29) = -1 EBADF (Bad file descriptor) [pid 5247] exit_group(0) = ? [pid 5247] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=166, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5248] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5248] <... exit resumed>) = ? [pid 5064] umount2("./82/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./82/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./82/cgroup.cpu" [pid 5248] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=167, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./82/binderfs") = 0 [pid 5064] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./82/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./82/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./82/file0") = 0 [pid 5064] umount2("./82/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./82/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./82/cgroup") = 0 [pid 5064] umount2("./82/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./82/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./82/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./82") = 0 [pid 5064] mkdir("./83", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5249 attached , child_tidptr=0x555555a8a650) = 168 [pid 5249] set_robust_list(0x555555a8a660, 24) = 0 [pid 5249] chdir("./83") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5249] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5249] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] mkdir("./file0", 000) = 0 [pid 5249] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5249] open("./file0", O_RDONLY) = 3 [pid 5249] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5249] write(4, "-pids ", 6) = 6 [pid 5249] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5249] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5250 attached ) = 169 [pid 5249] ptrace(PTRACE_ATTACH, 169) = -1 EPERM (Operation not permitted) [pid 5249] close(3) = 0 [pid 5249] close(4) = 0 [pid 5249] close(5) = -1 EBADF (Bad file descriptor) [pid 5249] close(6) = -1 EBADF (Bad file descriptor) [pid 5249] close(7) = -1 EBADF (Bad file descriptor) [pid 5249] close(8) = -1 EBADF (Bad file descriptor) [pid 5249] close(9) = -1 EBADF (Bad file descriptor) [pid 5249] close(10) = -1 EBADF (Bad file descriptor) [pid 5249] close(11) = -1 EBADF (Bad file descriptor) [pid 5249] close(12) = -1 EBADF (Bad file descriptor) [pid 5249] close(13) = -1 EBADF (Bad file descriptor) [pid 5249] close(14) = -1 EBADF (Bad file descriptor) [pid 5249] close(15) = -1 EBADF (Bad file descriptor) [pid 5249] close(16) = -1 EBADF (Bad file descriptor) [pid 5249] close(17) = -1 EBADF (Bad file descriptor) [pid 5249] close(18) = -1 EBADF (Bad file descriptor) [pid 5249] close(19) = -1 EBADF (Bad file descriptor) [pid 5249] close(20) = -1 EBADF (Bad file descriptor) [pid 5249] close(21) = -1 EBADF (Bad file descriptor) [pid 5249] close(22) = -1 EBADF (Bad file descriptor) [pid 5249] close(23) = -1 EBADF (Bad file descriptor) [pid 5249] close(24) = -1 EBADF (Bad file descriptor) [pid 5249] close(25) = -1 EBADF (Bad file descriptor) [pid 5249] close(26) = -1 EBADF (Bad file descriptor) [pid 5249] close(27) = -1 EBADF (Bad file descriptor) [pid 5249] close(28) = -1 EBADF (Bad file descriptor) [pid 5249] close(29) = -1 EBADF (Bad file descriptor) [pid 5249] exit_group(0) = ? [pid 5249] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=168, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./83/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./83/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./83/cgroup.cpu" [pid 5250] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5250] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=169, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./83/binderfs") = 0 [pid 5064] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./83/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./83/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./83/file0") = 0 [pid 5064] umount2("./83/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./83/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./83/cgroup") = 0 [pid 5064] umount2("./83/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./83/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./83/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./83") = 0 [pid 5064] mkdir("./84", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5251 attached , child_tidptr=0x555555a8a650) = 170 [pid 5251] set_robust_list(0x555555a8a660, 24) = 0 [pid 5251] chdir("./84") = 0 [pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5251] setpgid(0, 0) = 0 [pid 5251] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5251] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5251] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5251] write(3, "1000", 4) = 4 [pid 5251] close(3) = 0 [pid 5251] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5251] mkdir("./file0", 000) = 0 [pid 5251] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5251] open("./file0", O_RDONLY) = 3 [pid 5251] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5251] write(4, "-pids ", 6) = 6 [pid 5251] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5251] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5252 attached ) = 171 [pid 5251] ptrace(PTRACE_ATTACH, 171) = -1 EPERM (Operation not permitted) [pid 5251] close(3) = 0 [pid 5251] close(4) = 0 [pid 5251] close(5) = -1 EBADF (Bad file descriptor) [pid 5251] close(6) = -1 EBADF (Bad file descriptor) [pid 5251] close(7) = -1 EBADF (Bad file descriptor) [pid 5251] close(8) = -1 EBADF (Bad file descriptor) [pid 5251] close(9) = -1 EBADF (Bad file descriptor) [pid 5251] close(10) = -1 EBADF (Bad file descriptor) [pid 5251] close(11) = -1 EBADF (Bad file descriptor) [pid 5251] close(12) = -1 EBADF (Bad file descriptor) [pid 5251] close(13) = -1 EBADF (Bad file descriptor) [pid 5251] close(14) = -1 EBADF (Bad file descriptor) [pid 5251] close(15) = -1 EBADF (Bad file descriptor) [pid 5251] close(16) = -1 EBADF (Bad file descriptor) [pid 5251] close(17) = -1 EBADF (Bad file descriptor) [pid 5251] close(18) = -1 EBADF (Bad file descriptor) [pid 5251] close(19) = -1 EBADF (Bad file descriptor) [pid 5251] close(20) = -1 EBADF (Bad file descriptor) [pid 5251] close(21) = -1 EBADF (Bad file descriptor) [pid 5251] close(22) = -1 EBADF (Bad file descriptor) [pid 5251] close(23) = -1 EBADF (Bad file descriptor) [pid 5251] close(24) = -1 EBADF (Bad file descriptor) [pid 5251] close(25) = -1 EBADF (Bad file descriptor) [pid 5251] close(26) = -1 EBADF (Bad file descriptor) [pid 5251] close(27) = -1 EBADF (Bad file descriptor) [pid 5251] close(28) = -1 EBADF (Bad file descriptor) [pid 5251] close(29) = -1 EBADF (Bad file descriptor) [pid 5251] exit_group(0) = ? [pid 5251] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=170, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./84/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./84/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./84/cgroup.cpu") = 0 [pid 5064] umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./84/binderfs") = 0 [pid 5064] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5252] exit(0) = ? [pid 5064] newfstatat(AT_FDCWD, "./84/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5252] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] openat(AT_FDCWD, "./84/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./84/file0") = 0 [pid 5064] umount2("./84/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./84/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./84/cgroup") = 0 [pid 5064] umount2("./84/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./84/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./84/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./84") = 0 [pid 5064] mkdir("./85", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5253 attached , child_tidptr=0x555555a8a650) = 172 [pid 5253] set_robust_list(0x555555a8a660, 24) = 0 [pid 5253] chdir("./85") = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 0 [pid 5253] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5253] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5253] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5253] write(3, "1000", 4) = 4 [pid 5253] close(3) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5253] mkdir("./file0", 000) = 0 [pid 5253] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5253] open("./file0", O_RDONLY) = 3 [pid 5253] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5253] write(4, "-pids ", 6) = 6 [pid 5253] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5253] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5254 attached ) = 173 [pid 5253] ptrace(PTRACE_ATTACH, 173) = -1 EPERM (Operation not permitted) [pid 5253] close(3) = 0 [pid 5253] close(4) = 0 [pid 5253] close(5) = -1 EBADF (Bad file descriptor) [pid 5253] close(6) = -1 EBADF (Bad file descriptor) [pid 5253] close(7) = -1 EBADF (Bad file descriptor) [pid 5253] close(8) = -1 EBADF (Bad file descriptor) [pid 5253] close(9) = -1 EBADF (Bad file descriptor) [pid 5253] close(10) = -1 EBADF (Bad file descriptor) [pid 5253] close(11) = -1 EBADF (Bad file descriptor) [pid 5253] close(12) = -1 EBADF (Bad file descriptor) [pid 5253] close(13) = -1 EBADF (Bad file descriptor) [pid 5253] close(14) = -1 EBADF (Bad file descriptor) [pid 5253] close(15) = -1 EBADF (Bad file descriptor) [pid 5253] close(16) = -1 EBADF (Bad file descriptor) [pid 5253] close(17) = -1 EBADF (Bad file descriptor) [pid 5253] close(18) = -1 EBADF (Bad file descriptor) [pid 5253] close(19) = -1 EBADF (Bad file descriptor) [pid 5253] close(20) = -1 EBADF (Bad file descriptor) [pid 5253] close(21) = -1 EBADF (Bad file descriptor) [pid 5253] close(22) = -1 EBADF (Bad file descriptor) [pid 5253] close(23) = -1 EBADF (Bad file descriptor) [pid 5253] close(24) = -1 EBADF (Bad file descriptor) [pid 5253] close(25) = -1 EBADF (Bad file descriptor) [pid 5253] close(26) = -1 EBADF (Bad file descriptor) [pid 5253] close(27) = -1 EBADF (Bad file descriptor) [pid 5253] close(28) = -1 EBADF (Bad file descriptor) [pid 5253] close(29) = -1 EBADF (Bad file descriptor) [pid 5253] exit_group(0) = ? [pid 5253] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=172, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5254] exit(0 [pid 5064] newfstatat(3, "", [pid 5254] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./85/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5254] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./85/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./85/cgroup.cpu") = 0 [pid 5064] umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./85/binderfs") = 0 [pid 5064] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./85/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./85/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./85/file0") = 0 [pid 5064] umount2("./85/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./85/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./85/cgroup") = 0 [pid 5064] umount2("./85/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./85/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./85/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./85") = 0 [pid 5064] mkdir("./86", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5255 attached , child_tidptr=0x555555a8a650) = 174 [pid 5255] set_robust_list(0x555555a8a660, 24) = 0 [pid 5255] chdir("./86") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5255] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5255] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] mkdir("./file0", 000) = 0 [pid 5255] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5255] open("./file0", O_RDONLY) = 3 [pid 5255] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5255] write(4, "-pids ", 6) = 6 [pid 5255] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5255] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5256 attached ) = 175 [pid 5255] ptrace(PTRACE_ATTACH, 175) = -1 EPERM (Operation not permitted) [pid 5255] close(3) = 0 [pid 5255] close(4) = 0 [pid 5255] close(5) = -1 EBADF (Bad file descriptor) [pid 5255] close(6) = -1 EBADF (Bad file descriptor) [pid 5255] close(7) = -1 EBADF (Bad file descriptor) [pid 5255] close(8) = -1 EBADF (Bad file descriptor) [pid 5255] close(9) = -1 EBADF (Bad file descriptor) [pid 5255] close(10) = -1 EBADF (Bad file descriptor) [pid 5255] close(11) = -1 EBADF (Bad file descriptor) [pid 5255] close(12) = -1 EBADF (Bad file descriptor) [pid 5255] close(13) = -1 EBADF (Bad file descriptor) [pid 5255] close(14) = -1 EBADF (Bad file descriptor) [pid 5255] close(15) = -1 EBADF (Bad file descriptor) [pid 5255] close(16) = -1 EBADF (Bad file descriptor) [pid 5255] close(17) = -1 EBADF (Bad file descriptor) [pid 5255] close(18) = -1 EBADF (Bad file descriptor) [pid 5255] close(19) = -1 EBADF (Bad file descriptor) [pid 5255] close(20) = -1 EBADF (Bad file descriptor) [pid 5255] close(21) = -1 EBADF (Bad file descriptor) [pid 5255] close(22) = -1 EBADF (Bad file descriptor) [pid 5255] close(23) = -1 EBADF (Bad file descriptor) [pid 5255] close(24) = -1 EBADF (Bad file descriptor) [pid 5255] close(25) = -1 EBADF (Bad file descriptor) [pid 5255] close(26) = -1 EBADF (Bad file descriptor) [pid 5255] close(27) = -1 EBADF (Bad file descriptor) [pid 5255] close(28) = -1 EBADF (Bad file descriptor) [pid 5255] close(29) = -1 EBADF (Bad file descriptor) [pid 5255] exit_group(0) = ? [pid 5255] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=174, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./86/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./86/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./86/cgroup.cpu") = 0 [pid 5064] umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./86/binderfs") = 0 [pid 5064] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5256] exit(0 [pid 5064] newfstatat(AT_FDCWD, "./86/file0", [pid 5256] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5256] +++ exited with 0 +++ [pid 5064] openat(AT_FDCWD, "./86/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=175, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./86/file0") = 0 [pid 5064] umount2("./86/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./86/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./86/cgroup") = 0 [pid 5064] umount2("./86/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./86/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./86/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./86") = 0 [pid 5064] mkdir("./87", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5257 attached , child_tidptr=0x555555a8a650) = 176 [pid 5257] set_robust_list(0x555555a8a660, 24) = 0 [pid 5257] chdir("./87") = 0 [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5257] setpgid(0, 0) = 0 [pid 5257] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5257] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5257] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5257] write(3, "1000", 4) = 4 [pid 5257] close(3) = 0 [pid 5257] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5257] mkdir("./file0", 000) = 0 [pid 5257] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5257] open("./file0", O_RDONLY) = 3 [pid 5257] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5257] write(4, "-pids ", 6) = 6 [pid 5257] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5257] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5258 attached ) = 177 [pid 5257] ptrace(PTRACE_ATTACH, 177) = -1 EPERM (Operation not permitted) [pid 5257] close(3) = 0 [pid 5257] close(4) = 0 [pid 5257] close(5) = -1 EBADF (Bad file descriptor) [pid 5257] close(6) = -1 EBADF (Bad file descriptor) [pid 5257] close(7) = -1 EBADF (Bad file descriptor) [pid 5257] close(8) = -1 EBADF (Bad file descriptor) [pid 5257] close(9) = -1 EBADF (Bad file descriptor) [pid 5257] close(10) = -1 EBADF (Bad file descriptor) [pid 5257] close(11) = -1 EBADF (Bad file descriptor) [pid 5257] close(12) = -1 EBADF (Bad file descriptor) [pid 5257] close(13) = -1 EBADF (Bad file descriptor) [pid 5257] close(14) = -1 EBADF (Bad file descriptor) [pid 5257] close(15) = -1 EBADF (Bad file descriptor) [pid 5257] close(16) = -1 EBADF (Bad file descriptor) [pid 5257] close(17) = -1 EBADF (Bad file descriptor) [pid 5257] close(18) = -1 EBADF (Bad file descriptor) [pid 5257] close(19) = -1 EBADF (Bad file descriptor) [pid 5257] close(20) = -1 EBADF (Bad file descriptor) [pid 5257] close(21) = -1 EBADF (Bad file descriptor) [pid 5257] close(22) = -1 EBADF (Bad file descriptor) [pid 5257] close(23) = -1 EBADF (Bad file descriptor) [pid 5257] close(24) = -1 EBADF (Bad file descriptor) [pid 5257] close(25) = -1 EBADF (Bad file descriptor) [pid 5257] close(26) = -1 EBADF (Bad file descriptor) [pid 5257] close(27) = -1 EBADF (Bad file descriptor) [pid 5257] close(28) = -1 EBADF (Bad file descriptor) [pid 5257] close(29) = -1 EBADF (Bad file descriptor) [pid 5257] exit_group(0) = ? [pid 5257] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=176, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./87/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./87/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./87/cgroup.cpu" [pid 5258] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5258] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=177, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./87/binderfs") = 0 [pid 5064] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./87/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./87/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./87/file0") = 0 [pid 5064] umount2("./87/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./87/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./87/cgroup") = 0 [pid 5064] umount2("./87/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./87/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./87/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./87") = 0 [pid 5064] mkdir("./88", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5259 attached , child_tidptr=0x555555a8a650) = 178 [pid 5259] set_robust_list(0x555555a8a660, 24) = 0 [pid 5259] chdir("./88") = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5259] setpgid(0, 0) = 0 [pid 5259] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5259] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5259] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] write(3, "1000", 4) = 4 [pid 5259] close(3) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5259] mkdir("./file0", 000) = 0 [pid 5259] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5259] open("./file0", O_RDONLY) = 3 [pid 5259] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5259] write(4, "-pids ", 6) = 6 [pid 5259] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5259] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5260 attached ) = 179 [pid 5259] ptrace(PTRACE_ATTACH, 179) = -1 EPERM (Operation not permitted) [pid 5259] close(3) = 0 [pid 5259] close(4) = 0 [pid 5259] close(5) = -1 EBADF (Bad file descriptor) [pid 5259] close(6) = -1 EBADF (Bad file descriptor) [pid 5259] close(7) = -1 EBADF (Bad file descriptor) [pid 5259] close(8) = -1 EBADF (Bad file descriptor) [pid 5259] close(9) = -1 EBADF (Bad file descriptor) [pid 5259] close(10) = -1 EBADF (Bad file descriptor) [pid 5259] close(11) = -1 EBADF (Bad file descriptor) [pid 5259] close(12) = -1 EBADF (Bad file descriptor) [pid 5259] close(13) = -1 EBADF (Bad file descriptor) [pid 5259] close(14) = -1 EBADF (Bad file descriptor) [pid 5259] close(15) = -1 EBADF (Bad file descriptor) [pid 5259] close(16) = -1 EBADF (Bad file descriptor) [pid 5259] close(17) = -1 EBADF (Bad file descriptor) [pid 5259] close(18) = -1 EBADF (Bad file descriptor) [pid 5259] close(19) = -1 EBADF (Bad file descriptor) [pid 5259] close(20) = -1 EBADF (Bad file descriptor) [pid 5259] close(21) = -1 EBADF (Bad file descriptor) [pid 5259] close(22) = -1 EBADF (Bad file descriptor) [pid 5259] close(23) = -1 EBADF (Bad file descriptor) [pid 5259] close(24) = -1 EBADF (Bad file descriptor) [pid 5259] close(25) = -1 EBADF (Bad file descriptor) [pid 5259] close(26) = -1 EBADF (Bad file descriptor) [pid 5259] close(27) = -1 EBADF (Bad file descriptor) [pid 5259] close(28) = -1 EBADF (Bad file descriptor) [pid 5259] close(29) = -1 EBADF (Bad file descriptor) [pid 5259] exit_group(0) = ? [pid 5259] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=178, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./88/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./88/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./88/cgroup.cpu") = 0 [pid 5064] umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./88/binderfs" [pid 5260] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5260] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=179, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./88/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./88/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./88/file0") = 0 [pid 5064] umount2("./88/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./88/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./88/cgroup") = 0 [pid 5064] umount2("./88/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./88/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./88/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./88") = 0 [pid 5064] mkdir("./89", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5261 attached , child_tidptr=0x555555a8a650) = 180 [pid 5261] set_robust_list(0x555555a8a660, 24) = 0 [pid 5261] chdir("./89") = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5261] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5261] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5261] write(3, "1000", 4) = 4 [pid 5261] close(3) = 0 [pid 5261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5261] mkdir("./file0", 000) = 0 [pid 5261] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5261] open("./file0", O_RDONLY) = 3 [pid 5261] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5261] write(4, "-pids ", 6) = 6 [pid 5261] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5261] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5262 attached ) = 181 [pid 5261] ptrace(PTRACE_ATTACH, 181) = -1 EPERM (Operation not permitted) [pid 5261] close(3) = 0 [pid 5261] close(4) = 0 [pid 5261] close(5) = -1 EBADF (Bad file descriptor) [pid 5261] close(6) = -1 EBADF (Bad file descriptor) [pid 5261] close(7) = -1 EBADF (Bad file descriptor) [pid 5261] close(8) = -1 EBADF (Bad file descriptor) [pid 5261] close(9) = -1 EBADF (Bad file descriptor) [pid 5261] close(10) = -1 EBADF (Bad file descriptor) [pid 5261] close(11) = -1 EBADF (Bad file descriptor) [pid 5261] close(12) = -1 EBADF (Bad file descriptor) [pid 5261] close(13) = -1 EBADF (Bad file descriptor) [pid 5261] close(14) = -1 EBADF (Bad file descriptor) [pid 5261] close(15) = -1 EBADF (Bad file descriptor) [pid 5261] close(16) = -1 EBADF (Bad file descriptor) [pid 5261] close(17) = -1 EBADF (Bad file descriptor) [pid 5261] close(18) = -1 EBADF (Bad file descriptor) [pid 5261] close(19) = -1 EBADF (Bad file descriptor) [pid 5261] close(20) = -1 EBADF (Bad file descriptor) [pid 5261] close(21) = -1 EBADF (Bad file descriptor) [pid 5261] close(22) = -1 EBADF (Bad file descriptor) [pid 5261] close(23) = -1 EBADF (Bad file descriptor) [pid 5261] close(24) = -1 EBADF (Bad file descriptor) [pid 5261] close(25) = -1 EBADF (Bad file descriptor) [pid 5261] close(26) = -1 EBADF (Bad file descriptor) [pid 5261] close(27) = -1 EBADF (Bad file descriptor) [pid 5261] close(28) = -1 EBADF (Bad file descriptor) [pid 5261] close(29) = -1 EBADF (Bad file descriptor) [pid 5261] exit_group(0) = ? [pid 5261] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=180, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./89/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./89/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./89/cgroup.cpu" [pid 5262] exit(0) = ? [pid 5262] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./89/binderfs") = 0 [pid 5064] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./89/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./89/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./89/file0") = 0 [pid 5064] umount2("./89/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./89/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./89/cgroup") = 0 [pid 5064] umount2("./89/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./89/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./89/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./89") = 0 [pid 5064] mkdir("./90", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 182 ./strace-static-x86_64: Process 5263 attached [pid 5263] set_robust_list(0x555555a8a660, 24) = 0 [pid 5263] chdir("./90") = 0 [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0) = 0 [pid 5263] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5263] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5263] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5263] write(3, "1000", 4) = 4 [pid 5263] close(3) = 0 [pid 5263] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5263] mkdir("./file0", 000) = 0 [pid 5263] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5263] open("./file0", O_RDONLY) = 3 [pid 5263] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5263] write(4, "-pids ", 6) = 6 [pid 5263] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5263] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5264 attached ) = 183 [pid 5263] ptrace(PTRACE_ATTACH, 183) = -1 EPERM (Operation not permitted) [pid 5263] close(3) = 0 [pid 5263] close(4) = 0 [pid 5263] close(5) = -1 EBADF (Bad file descriptor) [pid 5263] close(6) = -1 EBADF (Bad file descriptor) [pid 5263] close(7) = -1 EBADF (Bad file descriptor) [pid 5263] close(8) = -1 EBADF (Bad file descriptor) [pid 5263] close(9) = -1 EBADF (Bad file descriptor) [pid 5263] close(10) = -1 EBADF (Bad file descriptor) [pid 5263] close(11) = -1 EBADF (Bad file descriptor) [pid 5263] close(12) = -1 EBADF (Bad file descriptor) [pid 5263] close(13) = -1 EBADF (Bad file descriptor) [pid 5263] close(14) = -1 EBADF (Bad file descriptor) [pid 5263] close(15) = -1 EBADF (Bad file descriptor) [pid 5263] close(16) = -1 EBADF (Bad file descriptor) [pid 5263] close(17) = -1 EBADF (Bad file descriptor) [pid 5263] close(18) = -1 EBADF (Bad file descriptor) [pid 5263] close(19) = -1 EBADF (Bad file descriptor) [pid 5263] close(20) = -1 EBADF (Bad file descriptor) [pid 5263] close(21) = -1 EBADF (Bad file descriptor) [pid 5263] close(22) = -1 EBADF (Bad file descriptor) [pid 5263] close(23) = -1 EBADF (Bad file descriptor) [pid 5263] close(24) = -1 EBADF (Bad file descriptor) [pid 5263] close(25) = -1 EBADF (Bad file descriptor) [pid 5263] close(26) = -1 EBADF (Bad file descriptor) [pid 5263] close(27) = -1 EBADF (Bad file descriptor) [pid 5263] close(28) = -1 EBADF (Bad file descriptor) [pid 5263] close(29) = -1 EBADF (Bad file descriptor) [pid 5263] exit_group(0) = ? [pid 5263] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=182, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5264] exit(0 [pid 5064] umount2("./90/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5264] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./90/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./90/cgroup.cpu") = 0 [pid 5264] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=183, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./90/binderfs") = 0 [pid 5064] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./90/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./90/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./90/file0") = 0 [pid 5064] umount2("./90/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./90/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./90/cgroup") = 0 [pid 5064] umount2("./90/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./90/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./90/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./90") = 0 [pid 5064] mkdir("./91", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 184 ./strace-static-x86_64: Process 5265 attached [pid 5265] set_robust_list(0x555555a8a660, 24) = 0 [pid 5265] chdir("./91") = 0 [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5265] setpgid(0, 0) = 0 [pid 5265] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5265] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5265] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5265] write(3, "1000", 4) = 4 [pid 5265] close(3) = 0 [pid 5265] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5265] mkdir("./file0", 000) = 0 [pid 5265] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5265] open("./file0", O_RDONLY) = 3 [pid 5265] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5265] write(4, "-pids ", 6) = 6 [pid 5265] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5265] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5266 attached ) = 185 [pid 5265] ptrace(PTRACE_ATTACH, 185) = -1 EPERM (Operation not permitted) [pid 5265] close(3) = 0 [pid 5265] close(4) = 0 [pid 5265] close(5) = -1 EBADF (Bad file descriptor) [pid 5265] close(6) = -1 EBADF (Bad file descriptor) [pid 5265] close(7) = -1 EBADF (Bad file descriptor) [pid 5265] close(8) = -1 EBADF (Bad file descriptor) [pid 5265] close(9) = -1 EBADF (Bad file descriptor) [pid 5265] close(10) = -1 EBADF (Bad file descriptor) [pid 5265] close(11) = -1 EBADF (Bad file descriptor) [pid 5265] close(12) = -1 EBADF (Bad file descriptor) [pid 5265] close(13) = -1 EBADF (Bad file descriptor) [pid 5265] close(14) = -1 EBADF (Bad file descriptor) [pid 5265] close(15) = -1 EBADF (Bad file descriptor) [pid 5265] close(16) = -1 EBADF (Bad file descriptor) [pid 5265] close(17) = -1 EBADF (Bad file descriptor) [pid 5265] close(18) = -1 EBADF (Bad file descriptor) [pid 5265] close(19) = -1 EBADF (Bad file descriptor) [pid 5265] close(20) = -1 EBADF (Bad file descriptor) [pid 5265] close(21) = -1 EBADF (Bad file descriptor) [pid 5265] close(22) = -1 EBADF (Bad file descriptor) [pid 5265] close(23) = -1 EBADF (Bad file descriptor) [pid 5265] close(24) = -1 EBADF (Bad file descriptor) [pid 5265] close(25) = -1 EBADF (Bad file descriptor) [pid 5265] close(26) = -1 EBADF (Bad file descriptor) [pid 5265] close(27) = -1 EBADF (Bad file descriptor) [pid 5265] close(28) = -1 EBADF (Bad file descriptor) [pid 5265] close(29) = -1 EBADF (Bad file descriptor) [pid 5265] exit_group(0) = ? [pid 5265] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=184, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./91/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./91/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./91/cgroup.cpu" [pid 5266] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5266] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=185, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./91/binderfs") = 0 [pid 5064] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./91/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./91/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./91/file0") = 0 [pid 5064] umount2("./91/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./91/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./91/cgroup") = 0 [pid 5064] umount2("./91/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./91/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./91/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./91") = 0 [pid 5064] mkdir("./92", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5267 attached , child_tidptr=0x555555a8a650) = 186 [pid 5267] set_robust_list(0x555555a8a660, 24) = 0 [pid 5267] chdir("./92") = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5267] setpgid(0, 0) = 0 [pid 5267] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5267] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5267] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5267] write(3, "1000", 4) = 4 [pid 5267] close(3) = 0 [pid 5267] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5267] mkdir("./file0", 000) = 0 [pid 5267] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5267] open("./file0", O_RDONLY) = 3 [pid 5267] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5267] write(4, "-pids ", 6) = 6 [pid 5267] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5267] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5268 attached ) = 187 [pid 5267] ptrace(PTRACE_ATTACH, 187) = -1 EPERM (Operation not permitted) [pid 5267] close(3) = 0 [pid 5267] close(4) = 0 [pid 5267] close(5) = -1 EBADF (Bad file descriptor) [pid 5267] close(6) = -1 EBADF (Bad file descriptor) [pid 5267] close(7) = -1 EBADF (Bad file descriptor) [pid 5267] close(8) = -1 EBADF (Bad file descriptor) [pid 5267] close(9) = -1 EBADF (Bad file descriptor) [pid 5267] close(10) = -1 EBADF (Bad file descriptor) [pid 5267] close(11) = -1 EBADF (Bad file descriptor) [pid 5267] close(12) = -1 EBADF (Bad file descriptor) [pid 5267] close(13) = -1 EBADF (Bad file descriptor) [pid 5267] close(14) = -1 EBADF (Bad file descriptor) [pid 5267] close(15) = -1 EBADF (Bad file descriptor) [pid 5267] close(16) = -1 EBADF (Bad file descriptor) [pid 5267] close(17) = -1 EBADF (Bad file descriptor) [pid 5267] close(18) = -1 EBADF (Bad file descriptor) [pid 5267] close(19) = -1 EBADF (Bad file descriptor) [pid 5267] close(20) = -1 EBADF (Bad file descriptor) [pid 5267] close(21) = -1 EBADF (Bad file descriptor) [pid 5267] close(22) = -1 EBADF (Bad file descriptor) [pid 5267] close(23) = -1 EBADF (Bad file descriptor) [pid 5267] close(24) = -1 EBADF (Bad file descriptor) [pid 5267] close(25) = -1 EBADF (Bad file descriptor) [pid 5267] close(26) = -1 EBADF (Bad file descriptor) [pid 5267] close(27) = -1 EBADF (Bad file descriptor) [pid 5267] close(28) = -1 EBADF (Bad file descriptor) [pid 5267] close(29) = -1 EBADF (Bad file descriptor) [pid 5267] exit_group(0) = ? [pid 5267] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=186, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./92/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./92/cgroup.cpu", [pid 5268] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5268] <... exit resumed>) = ? [pid 5064] unlink("./92/cgroup.cpu") = 0 [pid 5064] umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5268] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=187, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./92/binderfs") = 0 [pid 5064] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./92/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./92/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./92/file0") = 0 [pid 5064] umount2("./92/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./92/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./92/cgroup") = 0 [pid 5064] umount2("./92/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./92/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./92/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./92") = 0 [pid 5064] mkdir("./93", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5269 attached , child_tidptr=0x555555a8a650) = 188 [pid 5269] set_robust_list(0x555555a8a660, 24) = 0 [pid 5269] chdir("./93") = 0 [pid 5269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5269] setpgid(0, 0) = 0 [pid 5269] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5269] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5269] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5269] write(3, "1000", 4) = 4 [pid 5269] close(3) = 0 [pid 5269] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5269] mkdir("./file0", 000) = 0 [pid 5269] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5269] open("./file0", O_RDONLY) = 3 [pid 5269] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5269] write(4, "-pids ", 6) = 6 [pid 5269] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5269] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5270 attached ) = 189 [pid 5269] ptrace(PTRACE_ATTACH, 189) = -1 EPERM (Operation not permitted) [pid 5269] close(3) = 0 [pid 5269] close(4) = 0 [pid 5269] close(5) = -1 EBADF (Bad file descriptor) [pid 5269] close(6) = -1 EBADF (Bad file descriptor) [pid 5269] close(7) = -1 EBADF (Bad file descriptor) [pid 5269] close(8) = -1 EBADF (Bad file descriptor) [pid 5269] close(9) = -1 EBADF (Bad file descriptor) [pid 5269] close(10) = -1 EBADF (Bad file descriptor) [pid 5269] close(11) = -1 EBADF (Bad file descriptor) [pid 5269] close(12) = -1 EBADF (Bad file descriptor) [pid 5269] close(13) = -1 EBADF (Bad file descriptor) [pid 5269] close(14) = -1 EBADF (Bad file descriptor) [pid 5269] close(15) = -1 EBADF (Bad file descriptor) [pid 5269] close(16) = -1 EBADF (Bad file descriptor) [pid 5269] close(17) = -1 EBADF (Bad file descriptor) [pid 5269] close(18) = -1 EBADF (Bad file descriptor) [pid 5269] close(19) = -1 EBADF (Bad file descriptor) [pid 5269] close(20) = -1 EBADF (Bad file descriptor) [pid 5269] close(21) = -1 EBADF (Bad file descriptor) [pid 5269] close(22) = -1 EBADF (Bad file descriptor) [pid 5269] close(23) = -1 EBADF (Bad file descriptor) [pid 5269] close(24) = -1 EBADF (Bad file descriptor) [pid 5269] close(25) = -1 EBADF (Bad file descriptor) [pid 5269] close(26) = -1 EBADF (Bad file descriptor) [pid 5269] close(27) = -1 EBADF (Bad file descriptor) [pid 5269] close(28) = -1 EBADF (Bad file descriptor) [pid 5269] close(29) = -1 EBADF (Bad file descriptor) [pid 5269] exit_group(0) = ? [pid 5269] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=188, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./93/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./93/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./93/cgroup.cpu") = 0 [pid 5064] umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./93/binderfs") = 0 [pid 5064] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./93/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./93/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5270] exit(0 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./93/file0" [pid 5270] <... exit resumed>) = ? [pid 5064] <... rmdir resumed>) = 0 [pid 5064] umount2("./93/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./93/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5270] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=189, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./93/cgroup") = 0 [pid 5064] umount2("./93/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./93/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./93/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./93") = 0 [pid 5064] mkdir("./94", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5271 attached , child_tidptr=0x555555a8a650) = 190 [pid 5271] set_robust_list(0x555555a8a660, 24) = 0 [pid 5271] chdir("./94") = 0 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 [pid 5271] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5271] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5271] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5271] write(3, "1000", 4) = 4 [pid 5271] close(3) = 0 [pid 5271] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5271] mkdir("./file0", 000) = 0 [pid 5271] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5271] open("./file0", O_RDONLY) = 3 [pid 5271] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5271] write(4, "-pids ", 6) = 6 [pid 5271] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5271] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5272 attached ) = 191 [pid 5271] ptrace(PTRACE_ATTACH, 191) = -1 EPERM (Operation not permitted) [pid 5271] close(3) = 0 [pid 5271] close(4) = 0 [pid 5271] close(5) = -1 EBADF (Bad file descriptor) [pid 5271] close(6) = -1 EBADF (Bad file descriptor) [pid 5271] close(7) = -1 EBADF (Bad file descriptor) [pid 5271] close(8) = -1 EBADF (Bad file descriptor) [pid 5271] close(9) = -1 EBADF (Bad file descriptor) [pid 5271] close(10) = -1 EBADF (Bad file descriptor) [pid 5271] close(11) = -1 EBADF (Bad file descriptor) [pid 5271] close(12) = -1 EBADF (Bad file descriptor) [pid 5271] close(13) = -1 EBADF (Bad file descriptor) [pid 5271] close(14) = -1 EBADF (Bad file descriptor) [pid 5271] close(15) = -1 EBADF (Bad file descriptor) [pid 5271] close(16) = -1 EBADF (Bad file descriptor) [pid 5271] close(17) = -1 EBADF (Bad file descriptor) [pid 5271] close(18) = -1 EBADF (Bad file descriptor) [pid 5271] close(19) = -1 EBADF (Bad file descriptor) [pid 5271] close(20) = -1 EBADF (Bad file descriptor) [pid 5271] close(21) = -1 EBADF (Bad file descriptor) [pid 5271] close(22) = -1 EBADF (Bad file descriptor) [pid 5271] close(23) = -1 EBADF (Bad file descriptor) [pid 5271] close(24) = -1 EBADF (Bad file descriptor) [pid 5271] close(25) = -1 EBADF (Bad file descriptor) [pid 5271] close(26) = -1 EBADF (Bad file descriptor) [pid 5271] close(27) = -1 EBADF (Bad file descriptor) [pid 5271] close(28) = -1 EBADF (Bad file descriptor) [pid 5271] close(29) = -1 EBADF (Bad file descriptor) [pid 5271] exit_group(0) = ? [pid 5271] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=190, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./94/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./94/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./94/cgroup.cpu") = 0 [pid 5064] umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./94/binderfs") = 0 [pid 5064] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./94/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5272] exit(0 [pid 5064] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5272] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./94/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, [pid 5272] +++ exited with 0 +++ [pid 5064] <... getdents64 resumed>0x555555a93730 /* 1 entries */, 32768) = 24 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=191, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 1 entries */, 32768) = 24 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./94/file0") = 0 [pid 5064] umount2("./94/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./94/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./94/cgroup") = 0 [pid 5064] umount2("./94/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./94/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./94/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./94") = 0 [pid 5064] mkdir("./95", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5273 attached , child_tidptr=0x555555a8a650) = 192 [pid 5273] set_robust_list(0x555555a8a660, 24) = 0 [pid 5273] chdir("./95") = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5273] setpgid(0, 0) = 0 [pid 5273] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5273] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5273] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] write(3, "1000", 4) = 4 [pid 5273] close(3) = 0 [pid 5273] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5273] mkdir("./file0", 000) = 0 [pid 5273] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5273] open("./file0", O_RDONLY) = 3 [pid 5273] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5273] write(4, "-pids ", 6) = 6 [pid 5273] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5273] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5274 attached ) = 193 [pid 5273] ptrace(PTRACE_ATTACH, 193) = -1 EPERM (Operation not permitted) [pid 5273] close(3) = 0 [pid 5273] close(4) = 0 [pid 5273] close(5) = -1 EBADF (Bad file descriptor) [pid 5273] close(6) = -1 EBADF (Bad file descriptor) [pid 5273] close(7) = -1 EBADF (Bad file descriptor) [pid 5273] close(8) = -1 EBADF (Bad file descriptor) [pid 5273] close(9) = -1 EBADF (Bad file descriptor) [pid 5273] close(10) = -1 EBADF (Bad file descriptor) [pid 5273] close(11) = -1 EBADF (Bad file descriptor) [pid 5273] close(12) = -1 EBADF (Bad file descriptor) [pid 5273] close(13) = -1 EBADF (Bad file descriptor) [pid 5273] close(14) = -1 EBADF (Bad file descriptor) [pid 5273] close(15) = -1 EBADF (Bad file descriptor) [pid 5273] close(16) = -1 EBADF (Bad file descriptor) [pid 5273] close(17) = -1 EBADF (Bad file descriptor) [pid 5273] close(18) = -1 EBADF (Bad file descriptor) [pid 5273] close(19) = -1 EBADF (Bad file descriptor) [pid 5273] close(20) = -1 EBADF (Bad file descriptor) [pid 5273] close(21) = -1 EBADF (Bad file descriptor) [pid 5273] close(22) = -1 EBADF (Bad file descriptor) [pid 5273] close(23) = -1 EBADF (Bad file descriptor) [pid 5273] close(24) = -1 EBADF (Bad file descriptor) [pid 5273] close(25) = -1 EBADF (Bad file descriptor) [pid 5273] close(26) = -1 EBADF (Bad file descriptor) [pid 5273] close(27) = -1 EBADF (Bad file descriptor) [pid 5273] close(28) = -1 EBADF (Bad file descriptor) [pid 5273] close(29) = -1 EBADF (Bad file descriptor) [pid 5273] exit_group(0) = ? [pid 5273] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=192, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./95", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./95/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./95/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./95/cgroup.cpu" [pid 5274] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5274] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./95/binderfs") = 0 [pid 5064] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./95/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./95/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./95/file0") = 0 [pid 5064] umount2("./95/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./95/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./95/cgroup") = 0 [pid 5064] umount2("./95/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./95/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./95/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./95") = 0 [pid 5064] mkdir("./96", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5275 attached , child_tidptr=0x555555a8a650) = 194 [pid 5275] set_robust_list(0x555555a8a660, 24) = 0 [pid 5275] chdir("./96") = 0 [pid 5275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5275] setpgid(0, 0) = 0 [pid 5275] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5275] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5275] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5275] write(3, "1000", 4) = 4 [pid 5275] close(3) = 0 [pid 5275] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5275] mkdir("./file0", 000) = 0 [pid 5275] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5275] open("./file0", O_RDONLY) = 3 [pid 5275] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5275] write(4, "-pids ", 6) = 6 [pid 5275] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5275] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5276 attached ) = 195 [pid 5275] ptrace(PTRACE_ATTACH, 195) = -1 EPERM (Operation not permitted) [pid 5275] close(3) = 0 [pid 5275] close(4) = 0 [pid 5275] close(5) = -1 EBADF (Bad file descriptor) [pid 5275] close(6) = -1 EBADF (Bad file descriptor) [pid 5275] close(7) = -1 EBADF (Bad file descriptor) [pid 5275] close(8) = -1 EBADF (Bad file descriptor) [pid 5275] close(9) = -1 EBADF (Bad file descriptor) [pid 5275] close(10) = -1 EBADF (Bad file descriptor) [pid 5275] close(11) = -1 EBADF (Bad file descriptor) [pid 5275] close(12) = -1 EBADF (Bad file descriptor) [pid 5275] close(13) = -1 EBADF (Bad file descriptor) [pid 5275] close(14) = -1 EBADF (Bad file descriptor) [pid 5275] close(15) = -1 EBADF (Bad file descriptor) [pid 5275] close(16) = -1 EBADF (Bad file descriptor) [pid 5275] close(17) = -1 EBADF (Bad file descriptor) [pid 5275] close(18) = -1 EBADF (Bad file descriptor) [pid 5275] close(19) = -1 EBADF (Bad file descriptor) [pid 5275] close(20) = -1 EBADF (Bad file descriptor) [pid 5275] close(21) = -1 EBADF (Bad file descriptor) [pid 5275] close(22) = -1 EBADF (Bad file descriptor) [pid 5275] close(23) = -1 EBADF (Bad file descriptor) [pid 5275] close(24) = -1 EBADF (Bad file descriptor) [pid 5275] close(25) = -1 EBADF (Bad file descriptor) [pid 5275] close(26) = -1 EBADF (Bad file descriptor) [pid 5275] close(27) = -1 EBADF (Bad file descriptor) [pid 5275] close(28) = -1 EBADF (Bad file descriptor) [pid 5275] close(29) = -1 EBADF (Bad file descriptor) [pid 5275] exit_group(0) = ? [pid 5275] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=194, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./96/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./96/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./96/cgroup.cpu") = 0 [pid 5064] umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./96/binderfs") = 0 [pid 5064] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./96/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./96/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, [pid 5276] exit(0 [pid 5064] <... getdents64 resumed>0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5276] <... exit resumed>) = ? [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5276] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=195, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] rmdir("./96/file0") = 0 [pid 5064] umount2("./96/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./96/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./96/cgroup") = 0 [pid 5064] umount2("./96/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./96/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./96/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./96") = 0 [pid 5064] mkdir("./97", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5277 attached , child_tidptr=0x555555a8a650) = 196 [pid 5277] set_robust_list(0x555555a8a660, 24) = 0 [pid 5277] chdir("./97") = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5277] setpgid(0, 0) = 0 [pid 5277] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5277] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5277] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5277] write(3, "1000", 4) = 4 [pid 5277] close(3) = 0 [pid 5277] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5277] mkdir("./file0", 000) = 0 [pid 5277] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5277] open("./file0", O_RDONLY) = 3 [pid 5277] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5277] write(4, "-pids ", 6) = 6 [pid 5277] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5277] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5278 attached ) = 197 [pid 5277] ptrace(PTRACE_ATTACH, 197) = -1 EPERM (Operation not permitted) [pid 5277] close(3) = 0 [pid 5277] close(4) = 0 [pid 5277] close(5) = -1 EBADF (Bad file descriptor) [pid 5277] close(6) = -1 EBADF (Bad file descriptor) [pid 5277] close(7) = -1 EBADF (Bad file descriptor) [pid 5277] close(8) = -1 EBADF (Bad file descriptor) [pid 5277] close(9) = -1 EBADF (Bad file descriptor) [pid 5277] close(10) = -1 EBADF (Bad file descriptor) [pid 5277] close(11) = -1 EBADF (Bad file descriptor) [pid 5277] close(12) = -1 EBADF (Bad file descriptor) [pid 5277] close(13) = -1 EBADF (Bad file descriptor) [pid 5277] close(14) = -1 EBADF (Bad file descriptor) [pid 5277] close(15) = -1 EBADF (Bad file descriptor) [pid 5277] close(16) = -1 EBADF (Bad file descriptor) [pid 5277] close(17) = -1 EBADF (Bad file descriptor) [pid 5277] close(18) = -1 EBADF (Bad file descriptor) [pid 5277] close(19) = -1 EBADF (Bad file descriptor) [pid 5277] close(20) = -1 EBADF (Bad file descriptor) [pid 5277] close(21) = -1 EBADF (Bad file descriptor) [pid 5277] close(22) = -1 EBADF (Bad file descriptor) [pid 5277] close(23) = -1 EBADF (Bad file descriptor) [pid 5277] close(24) = -1 EBADF (Bad file descriptor) [pid 5277] close(25) = -1 EBADF (Bad file descriptor) [pid 5277] close(26) = -1 EBADF (Bad file descriptor) [pid 5277] close(27) = -1 EBADF (Bad file descriptor) [pid 5277] close(28) = -1 EBADF (Bad file descriptor) [pid 5277] close(29) = -1 EBADF (Bad file descriptor) [pid 5277] exit_group(0) = ? [pid 5277] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./97/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5278] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5278] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./97/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./97/cgroup.cpu") = 0 [pid 5278] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=197, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./97/binderfs") = 0 [pid 5064] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./97/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./97/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./97/file0") = 0 [pid 5064] umount2("./97/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./97/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./97/cgroup") = 0 [pid 5064] umount2("./97/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./97/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./97/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./97") = 0 [pid 5064] mkdir("./98", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5279 attached , child_tidptr=0x555555a8a650) = 198 [pid 5279] set_robust_list(0x555555a8a660, 24) = 0 [pid 5279] chdir("./98") = 0 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5279] setpgid(0, 0) = 0 [pid 5279] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5279] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5279] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5279] write(3, "1000", 4) = 4 [pid 5279] close(3) = 0 [pid 5279] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5279] mkdir("./file0", 000) = 0 [pid 5279] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5279] open("./file0", O_RDONLY) = 3 [pid 5279] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5279] write(4, "-pids ", 6) = 6 [pid 5279] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5279] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5280 attached ) = 199 [pid 5279] ptrace(PTRACE_ATTACH, 199) = -1 EPERM (Operation not permitted) [pid 5279] close(3) = 0 [pid 5279] close(4) = 0 [pid 5279] close(5) = -1 EBADF (Bad file descriptor) [pid 5279] close(6) = -1 EBADF (Bad file descriptor) [pid 5279] close(7) = -1 EBADF (Bad file descriptor) [pid 5279] close(8) = -1 EBADF (Bad file descriptor) [pid 5279] close(9) = -1 EBADF (Bad file descriptor) [pid 5279] close(10) = -1 EBADF (Bad file descriptor) [pid 5279] close(11) = -1 EBADF (Bad file descriptor) [pid 5279] close(12) = -1 EBADF (Bad file descriptor) [pid 5279] close(13) = -1 EBADF (Bad file descriptor) [pid 5279] close(14) = -1 EBADF (Bad file descriptor) [pid 5279] close(15) = -1 EBADF (Bad file descriptor) [pid 5279] close(16) = -1 EBADF (Bad file descriptor) [pid 5279] close(17) = -1 EBADF (Bad file descriptor) [pid 5279] close(18) = -1 EBADF (Bad file descriptor) [pid 5279] close(19) = -1 EBADF (Bad file descriptor) [pid 5279] close(20) = -1 EBADF (Bad file descriptor) [pid 5279] close(21) = -1 EBADF (Bad file descriptor) [pid 5279] close(22) = -1 EBADF (Bad file descriptor) [pid 5279] close(23) = -1 EBADF (Bad file descriptor) [pid 5279] close(24) = -1 EBADF (Bad file descriptor) [pid 5279] close(25) = -1 EBADF (Bad file descriptor) [pid 5279] close(26) = -1 EBADF (Bad file descriptor) [pid 5279] close(27) = -1 EBADF (Bad file descriptor) [pid 5279] close(28) = -1 EBADF (Bad file descriptor) [pid 5279] close(29) = -1 EBADF (Bad file descriptor) [pid 5279] exit_group(0) = ? [pid 5279] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=198, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./98", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./98/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./98/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./98/cgroup.cpu") = 0 [pid 5064] umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./98/binderfs" [pid 5280] exit(0) = ? [pid 5280] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=199, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./98/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./98/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./98/file0") = 0 [pid 5064] umount2("./98/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./98/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./98/cgroup") = 0 [pid 5064] umount2("./98/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./98/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./98/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./98") = 0 [pid 5064] mkdir("./99", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 200 ./strace-static-x86_64: Process 5281 attached [pid 5281] set_robust_list(0x555555a8a660, 24) = 0 [pid 5281] chdir("./99") = 0 [pid 5281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5281] setpgid(0, 0) = 0 [pid 5281] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5281] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5281] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5281] write(3, "1000", 4) = 4 [pid 5281] close(3) = 0 [pid 5281] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5281] mkdir("./file0", 000) = 0 [pid 5281] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5281] open("./file0", O_RDONLY) = 3 [pid 5281] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5281] write(4, "-pids ", 6) = 6 [pid 5281] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5281] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5282 attached ) = 201 [pid 5281] ptrace(PTRACE_ATTACH, 201) = -1 EPERM (Operation not permitted) [pid 5281] close(3) = 0 [pid 5281] close(4) = 0 [pid 5281] close(5) = -1 EBADF (Bad file descriptor) [pid 5281] close(6) = -1 EBADF (Bad file descriptor) [pid 5281] close(7) = -1 EBADF (Bad file descriptor) [pid 5281] close(8) = -1 EBADF (Bad file descriptor) [pid 5281] close(9) = -1 EBADF (Bad file descriptor) [pid 5281] close(10) = -1 EBADF (Bad file descriptor) [pid 5281] close(11) = -1 EBADF (Bad file descriptor) [pid 5281] close(12) = -1 EBADF (Bad file descriptor) [pid 5281] close(13) = -1 EBADF (Bad file descriptor) [pid 5281] close(14) = -1 EBADF (Bad file descriptor) [pid 5281] close(15) = -1 EBADF (Bad file descriptor) [pid 5281] close(16) = -1 EBADF (Bad file descriptor) [pid 5281] close(17) = -1 EBADF (Bad file descriptor) [pid 5281] close(18) = -1 EBADF (Bad file descriptor) [pid 5281] close(19) = -1 EBADF (Bad file descriptor) [pid 5281] close(20) = -1 EBADF (Bad file descriptor) [pid 5281] close(21) = -1 EBADF (Bad file descriptor) [pid 5281] close(22) = -1 EBADF (Bad file descriptor) [pid 5281] close(23) = -1 EBADF (Bad file descriptor) [pid 5281] close(24) = -1 EBADF (Bad file descriptor) [pid 5281] close(25) = -1 EBADF (Bad file descriptor) [pid 5281] close(26) = -1 EBADF (Bad file descriptor) [pid 5281] close(27) = -1 EBADF (Bad file descriptor) [pid 5281] close(28) = -1 EBADF (Bad file descriptor) [pid 5281] close(29) = -1 EBADF (Bad file descriptor) [pid 5281] exit_group(0) = ? [pid 5281] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=200, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./99", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./99/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./99/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./99/cgroup.cpu") = 0 [pid 5064] umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./99/binderfs") = 0 [pid 5064] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./99/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./99/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5282] exit(0) = ? [pid 5282] +++ exited with 0 +++ [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=201, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./99/file0") = 0 [pid 5064] umount2("./99/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./99/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./99/cgroup") = 0 [pid 5064] umount2("./99/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./99/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./99/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./99") = 0 [pid 5064] mkdir("./100", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5283 attached , child_tidptr=0x555555a8a650) = 202 [pid 5283] set_robust_list(0x555555a8a660, 24) = 0 [pid 5283] chdir("./100") = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5283] setpgid(0, 0) = 0 [pid 5283] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5283] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5283] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3) = 0 [pid 5283] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5283] mkdir("./file0", 000) = 0 [pid 5283] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5283] open("./file0", O_RDONLY) = 3 [pid 5283] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5283] write(4, "-pids ", 6) = 6 [pid 5283] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5283] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5284 attached ) = 203 [pid 5283] ptrace(PTRACE_ATTACH, 203) = -1 EPERM (Operation not permitted) [pid 5283] close(3) = 0 [pid 5283] close(4) = 0 [pid 5283] close(5) = -1 EBADF (Bad file descriptor) [pid 5283] close(6) = -1 EBADF (Bad file descriptor) [pid 5283] close(7) = -1 EBADF (Bad file descriptor) [pid 5283] close(8) = -1 EBADF (Bad file descriptor) [pid 5283] close(9) = -1 EBADF (Bad file descriptor) [pid 5283] close(10) = -1 EBADF (Bad file descriptor) [pid 5283] close(11) = -1 EBADF (Bad file descriptor) [pid 5283] close(12) = -1 EBADF (Bad file descriptor) [pid 5283] close(13) = -1 EBADF (Bad file descriptor) [pid 5283] close(14) = -1 EBADF (Bad file descriptor) [pid 5283] close(15) = -1 EBADF (Bad file descriptor) [pid 5283] close(16) = -1 EBADF (Bad file descriptor) [pid 5283] close(17) = -1 EBADF (Bad file descriptor) [pid 5283] close(18) = -1 EBADF (Bad file descriptor) [pid 5283] close(19) = -1 EBADF (Bad file descriptor) [pid 5283] close(20) = -1 EBADF (Bad file descriptor) [pid 5283] close(21) = -1 EBADF (Bad file descriptor) [pid 5283] close(22) = -1 EBADF (Bad file descriptor) [pid 5283] close(23) = -1 EBADF (Bad file descriptor) [pid 5283] close(24) = -1 EBADF (Bad file descriptor) [pid 5283] close(25) = -1 EBADF (Bad file descriptor) [pid 5283] close(26) = -1 EBADF (Bad file descriptor) [pid 5283] close(27) = -1 EBADF (Bad file descriptor) [pid 5283] close(28) = -1 EBADF (Bad file descriptor) [pid 5283] close(29) = -1 EBADF (Bad file descriptor) [pid 5283] exit_group(0) = ? [pid 5283] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=202, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./100/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5284] exit(0) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./100/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./100/cgroup.cpu") = 0 [pid 5284] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=203, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./100/binderfs") = 0 [pid 5064] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./100/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./100/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./100/file0") = 0 [pid 5064] umount2("./100/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./100/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./100/cgroup") = 0 [pid 5064] umount2("./100/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./100/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./100/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./100") = 0 [pid 5064] mkdir("./101", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5285 attached , child_tidptr=0x555555a8a650) = 204 [pid 5285] set_robust_list(0x555555a8a660, 24) = 0 [pid 5285] chdir("./101") = 0 [pid 5285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5285] setpgid(0, 0) = 0 [pid 5285] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5285] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5285] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5285] write(3, "1000", 4) = 4 [pid 5285] close(3) = 0 [pid 5285] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5285] mkdir("./file0", 000) = 0 [pid 5285] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5285] open("./file0", O_RDONLY) = 3 [pid 5285] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5285] write(4, "-pids ", 6) = 6 [pid 5285] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5285] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5286 attached ) = 205 [pid 5285] ptrace(PTRACE_ATTACH, 205) = -1 EPERM (Operation not permitted) [pid 5285] close(3) = 0 [pid 5285] close(4) = 0 [pid 5285] close(5) = -1 EBADF (Bad file descriptor) [pid 5285] close(6) = -1 EBADF (Bad file descriptor) [pid 5285] close(7) = -1 EBADF (Bad file descriptor) [pid 5285] close(8) = -1 EBADF (Bad file descriptor) [pid 5285] close(9) = -1 EBADF (Bad file descriptor) [pid 5285] close(10) = -1 EBADF (Bad file descriptor) [pid 5285] close(11) = -1 EBADF (Bad file descriptor) [pid 5285] close(12) = -1 EBADF (Bad file descriptor) [pid 5285] close(13) = -1 EBADF (Bad file descriptor) [pid 5285] close(14) = -1 EBADF (Bad file descriptor) [pid 5285] close(15) = -1 EBADF (Bad file descriptor) [pid 5285] close(16) = -1 EBADF (Bad file descriptor) [pid 5285] close(17) = -1 EBADF (Bad file descriptor) [pid 5285] close(18) = -1 EBADF (Bad file descriptor) [pid 5285] close(19) = -1 EBADF (Bad file descriptor) [pid 5285] close(20) = -1 EBADF (Bad file descriptor) [pid 5285] close(21) = -1 EBADF (Bad file descriptor) [pid 5285] close(22) = -1 EBADF (Bad file descriptor) [pid 5285] close(23) = -1 EBADF (Bad file descriptor) [pid 5285] close(24) = -1 EBADF (Bad file descriptor) [pid 5285] close(25) = -1 EBADF (Bad file descriptor) [pid 5285] close(26) = -1 EBADF (Bad file descriptor) [pid 5285] close(27) = -1 EBADF (Bad file descriptor) [pid 5285] close(28) = -1 EBADF (Bad file descriptor) [pid 5285] close(29) = -1 EBADF (Bad file descriptor) [pid 5285] exit_group(0) = ? [pid 5285] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=204, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./101/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./101/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./101/cgroup.cpu") = 0 [pid 5286] exit(0 [pid 5064] umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5286] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./101/binderfs" [pid 5286] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=205, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./101/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./101/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./101/file0") = 0 [pid 5064] umount2("./101/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./101/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./101/cgroup") = 0 [pid 5064] umount2("./101/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./101/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./101/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./101") = 0 [pid 5064] mkdir("./102", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 206 ./strace-static-x86_64: Process 5287 attached [pid 5287] set_robust_list(0x555555a8a660, 24) = 0 [pid 5287] chdir("./102") = 0 [pid 5287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5287] setpgid(0, 0) = 0 [pid 5287] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5287] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5287] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5287] write(3, "1000", 4) = 4 [pid 5287] close(3) = 0 [pid 5287] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5287] mkdir("./file0", 000) = 0 [pid 5287] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5287] open("./file0", O_RDONLY) = 3 [pid 5287] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5287] write(4, "-pids ", 6) = 6 [pid 5287] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5287] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5288 attached ) = 207 [pid 5287] ptrace(PTRACE_ATTACH, 207) = -1 EPERM (Operation not permitted) [pid 5287] close(3) = 0 [pid 5287] close(4) = 0 [pid 5287] close(5) = -1 EBADF (Bad file descriptor) [pid 5287] close(6) = -1 EBADF (Bad file descriptor) [pid 5287] close(7) = -1 EBADF (Bad file descriptor) [pid 5287] close(8) = -1 EBADF (Bad file descriptor) [pid 5287] close(9) = -1 EBADF (Bad file descriptor) [pid 5287] close(10) = -1 EBADF (Bad file descriptor) [pid 5287] close(11) = -1 EBADF (Bad file descriptor) [pid 5287] close(12) = -1 EBADF (Bad file descriptor) [pid 5287] close(13) = -1 EBADF (Bad file descriptor) [pid 5287] close(14) = -1 EBADF (Bad file descriptor) [pid 5287] close(15) = -1 EBADF (Bad file descriptor) [pid 5287] close(16) = -1 EBADF (Bad file descriptor) [pid 5287] close(17) = -1 EBADF (Bad file descriptor) [pid 5287] close(18) = -1 EBADF (Bad file descriptor) [pid 5287] close(19) = -1 EBADF (Bad file descriptor) [pid 5287] close(20) = -1 EBADF (Bad file descriptor) [pid 5287] close(21) = -1 EBADF (Bad file descriptor) [pid 5287] close(22) = -1 EBADF (Bad file descriptor) [pid 5287] close(23) = -1 EBADF (Bad file descriptor) [pid 5287] close(24) = -1 EBADF (Bad file descriptor) [pid 5287] close(25) = -1 EBADF (Bad file descriptor) [pid 5287] close(26) = -1 EBADF (Bad file descriptor) [pid 5287] close(27) = -1 EBADF (Bad file descriptor) [pid 5287] close(28) = -1 EBADF (Bad file descriptor) [pid 5287] close(29) = -1 EBADF (Bad file descriptor) [pid 5287] exit_group(0) = ? [pid 5287] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=206, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./102", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./102/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./102/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./102/cgroup.cpu") = 0 [pid 5064] umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5288] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5288] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./102/binderfs") = 0 [pid 5288] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=207, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./102/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./102/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./102/file0") = 0 [pid 5064] umount2("./102/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./102/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./102/cgroup") = 0 [pid 5064] umount2("./102/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./102/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./102/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./102") = 0 [pid 5064] mkdir("./103", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5289 attached , child_tidptr=0x555555a8a650) = 208 [pid 5289] set_robust_list(0x555555a8a660, 24) = 0 [pid 5289] chdir("./103") = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5289] setpgid(0, 0) = 0 [pid 5289] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5289] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5289] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5289] mkdir("./file0", 000) = 0 [pid 5289] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5289] open("./file0", O_RDONLY) = 3 [pid 5289] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5289] write(4, "-pids ", 6) = 6 [pid 5289] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5289] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5290 attached ) = 209 [pid 5289] ptrace(PTRACE_ATTACH, 209) = -1 EPERM (Operation not permitted) [pid 5289] close(3) = 0 [pid 5289] close(4) = 0 [pid 5289] close(5) = -1 EBADF (Bad file descriptor) [pid 5289] close(6) = -1 EBADF (Bad file descriptor) [pid 5289] close(7) = -1 EBADF (Bad file descriptor) [pid 5289] close(8) = -1 EBADF (Bad file descriptor) [pid 5289] close(9) = -1 EBADF (Bad file descriptor) [pid 5289] close(10) = -1 EBADF (Bad file descriptor) [pid 5289] close(11) = -1 EBADF (Bad file descriptor) [pid 5289] close(12) = -1 EBADF (Bad file descriptor) [pid 5289] close(13) = -1 EBADF (Bad file descriptor) [pid 5289] close(14) = -1 EBADF (Bad file descriptor) [pid 5289] close(15) = -1 EBADF (Bad file descriptor) [pid 5289] close(16) = -1 EBADF (Bad file descriptor) [pid 5289] close(17) = -1 EBADF (Bad file descriptor) [pid 5289] close(18) = -1 EBADF (Bad file descriptor) [pid 5289] close(19) = -1 EBADF (Bad file descriptor) [pid 5289] close(20) = -1 EBADF (Bad file descriptor) [pid 5289] close(21) = -1 EBADF (Bad file descriptor) [pid 5289] close(22) = -1 EBADF (Bad file descriptor) [pid 5289] close(23) = -1 EBADF (Bad file descriptor) [pid 5289] close(24) = -1 EBADF (Bad file descriptor) [pid 5289] close(25) = -1 EBADF (Bad file descriptor) [pid 5289] close(26) = -1 EBADF (Bad file descriptor) [pid 5289] close(27) = -1 EBADF (Bad file descriptor) [pid 5289] close(28) = -1 EBADF (Bad file descriptor) [pid 5289] close(29) = -1 EBADF (Bad file descriptor) [pid 5289] exit_group(0) = ? [pid 5289] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=208, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./103/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./103/cgroup.cpu", [pid 5290] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5290] <... exit resumed>) = ? [pid 5064] unlink("./103/cgroup.cpu") = 0 [pid 5064] umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5290] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=209, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./103/binderfs") = 0 [pid 5064] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./103/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./103/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./103/file0") = 0 [pid 5064] umount2("./103/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./103/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./103/cgroup") = 0 [pid 5064] umount2("./103/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./103/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./103/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./103") = 0 [pid 5064] mkdir("./104", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5291 attached , child_tidptr=0x555555a8a650) = 210 [pid 5291] set_robust_list(0x555555a8a660, 24) = 0 [pid 5291] chdir("./104") = 0 [pid 5291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5291] setpgid(0, 0) = 0 [pid 5291] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5291] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5291] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5291] write(3, "1000", 4) = 4 [pid 5291] close(3) = 0 [pid 5291] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5291] mkdir("./file0", 000) = 0 [pid 5291] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5291] open("./file0", O_RDONLY) = 3 [pid 5291] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5291] write(4, "-pids ", 6) = 6 [pid 5291] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5291] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5292 attached ) = 211 [pid 5291] ptrace(PTRACE_ATTACH, 211) = -1 EPERM (Operation not permitted) [pid 5291] close(3) = 0 [pid 5291] close(4) = 0 [pid 5291] close(5) = -1 EBADF (Bad file descriptor) [pid 5291] close(6) = -1 EBADF (Bad file descriptor) [pid 5291] close(7) = -1 EBADF (Bad file descriptor) [pid 5291] close(8) = -1 EBADF (Bad file descriptor) [pid 5291] close(9) = -1 EBADF (Bad file descriptor) [pid 5291] close(10) = -1 EBADF (Bad file descriptor) [pid 5291] close(11) = -1 EBADF (Bad file descriptor) [pid 5291] close(12) = -1 EBADF (Bad file descriptor) [pid 5291] close(13) = -1 EBADF (Bad file descriptor) [pid 5291] close(14) = -1 EBADF (Bad file descriptor) [pid 5291] close(15) = -1 EBADF (Bad file descriptor) [pid 5291] close(16) = -1 EBADF (Bad file descriptor) [pid 5291] close(17) = -1 EBADF (Bad file descriptor) [pid 5291] close(18) = -1 EBADF (Bad file descriptor) [pid 5291] close(19) = -1 EBADF (Bad file descriptor) [pid 5291] close(20) = -1 EBADF (Bad file descriptor) [pid 5291] close(21) = -1 EBADF (Bad file descriptor) [pid 5291] close(22) = -1 EBADF (Bad file descriptor) [pid 5291] close(23) = -1 EBADF (Bad file descriptor) [pid 5291] close(24) = -1 EBADF (Bad file descriptor) [pid 5291] close(25) = -1 EBADF (Bad file descriptor) [pid 5291] close(26) = -1 EBADF (Bad file descriptor) [pid 5291] close(27) = -1 EBADF (Bad file descriptor) [pid 5291] close(28) = -1 EBADF (Bad file descriptor) [pid 5291] close(29) = -1 EBADF (Bad file descriptor) [pid 5291] exit_group(0) = ? [pid 5291] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=210, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./104/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./104/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./104/cgroup.cpu" [pid 5292] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5292] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./104/binderfs") = 0 [pid 5064] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./104/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./104/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./104/file0") = 0 [pid 5064] umount2("./104/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./104/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./104/cgroup") = 0 [pid 5064] umount2("./104/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./104/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./104/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./104") = 0 [pid 5064] mkdir("./105", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5293 attached , child_tidptr=0x555555a8a650) = 212 [pid 5293] set_robust_list(0x555555a8a660, 24) = 0 [pid 5293] chdir("./105") = 0 [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5293] setpgid(0, 0) = 0 [pid 5293] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5293] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5293] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5293] write(3, "1000", 4) = 4 [pid 5293] close(3) = 0 [pid 5293] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5293] mkdir("./file0", 000) = 0 [pid 5293] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5293] open("./file0", O_RDONLY) = 3 [pid 5293] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5293] write(4, "-pids ", 6) = 6 [pid 5293] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5293] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5294 attached ) = 213 [pid 5293] ptrace(PTRACE_ATTACH, 213) = -1 EPERM (Operation not permitted) [pid 5293] close(3) = 0 [pid 5293] close(4) = 0 [pid 5293] close(5) = -1 EBADF (Bad file descriptor) [pid 5293] close(6) = -1 EBADF (Bad file descriptor) [pid 5293] close(7) = -1 EBADF (Bad file descriptor) [pid 5293] close(8) = -1 EBADF (Bad file descriptor) [pid 5293] close(9) = -1 EBADF (Bad file descriptor) [pid 5293] close(10) = -1 EBADF (Bad file descriptor) [pid 5293] close(11) = -1 EBADF (Bad file descriptor) [pid 5293] close(12) = -1 EBADF (Bad file descriptor) [pid 5293] close(13) = -1 EBADF (Bad file descriptor) [pid 5293] close(14) = -1 EBADF (Bad file descriptor) [pid 5293] close(15) = -1 EBADF (Bad file descriptor) [pid 5293] close(16) = -1 EBADF (Bad file descriptor) [pid 5293] close(17) = -1 EBADF (Bad file descriptor) [pid 5293] close(18) = -1 EBADF (Bad file descriptor) [pid 5293] close(19) = -1 EBADF (Bad file descriptor) [pid 5293] close(20) = -1 EBADF (Bad file descriptor) [pid 5293] close(21) = -1 EBADF (Bad file descriptor) [pid 5293] close(22) = -1 EBADF (Bad file descriptor) [pid 5293] close(23) = -1 EBADF (Bad file descriptor) [pid 5293] close(24) = -1 EBADF (Bad file descriptor) [pid 5293] close(25) = -1 EBADF (Bad file descriptor) [pid 5293] close(26) = -1 EBADF (Bad file descriptor) [pid 5293] close(27) = -1 EBADF (Bad file descriptor) [pid 5293] close(28) = -1 EBADF (Bad file descriptor) [pid 5293] close(29) = -1 EBADF (Bad file descriptor) [pid 5293] exit_group(0) = ? [pid 5293] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=212, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5294] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5294] <... exit resumed>) = ? [pid 5064] umount2("./105/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5294] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=213, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] newfstatat(AT_FDCWD, "./105/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./105/cgroup.cpu") = 0 [pid 5064] umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./105/binderfs") = 0 [pid 5064] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./105/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./105/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./105/file0") = 0 [pid 5064] umount2("./105/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./105/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./105/cgroup") = 0 [pid 5064] umount2("./105/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./105/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./105/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./105") = 0 [pid 5064] mkdir("./106", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 214 ./strace-static-x86_64: Process 5295 attached [pid 5295] set_robust_list(0x555555a8a660, 24) = 0 [pid 5295] chdir("./106") = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5295] setpgid(0, 0) = 0 [pid 5295] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5295] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5295] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5295] write(3, "1000", 4) = 4 [pid 5295] close(3) = 0 [pid 5295] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5295] mkdir("./file0", 000) = 0 [pid 5295] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5295] open("./file0", O_RDONLY) = 3 [pid 5295] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5295] write(4, "-pids ", 6) = 6 [pid 5295] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5295] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5296 attached ) = 215 [pid 5295] ptrace(PTRACE_ATTACH, 215) = -1 EPERM (Operation not permitted) [pid 5295] close(3) = 0 [pid 5295] close(4) = 0 [pid 5295] close(5) = -1 EBADF (Bad file descriptor) [pid 5295] close(6) = -1 EBADF (Bad file descriptor) [pid 5295] close(7) = -1 EBADF (Bad file descriptor) [pid 5295] close(8) = -1 EBADF (Bad file descriptor) [pid 5295] close(9) = -1 EBADF (Bad file descriptor) [pid 5295] close(10) = -1 EBADF (Bad file descriptor) [pid 5295] close(11) = -1 EBADF (Bad file descriptor) [pid 5295] close(12) = -1 EBADF (Bad file descriptor) [pid 5295] close(13) = -1 EBADF (Bad file descriptor) [pid 5295] close(14) = -1 EBADF (Bad file descriptor) [pid 5295] close(15) = -1 EBADF (Bad file descriptor) [pid 5295] close(16) = -1 EBADF (Bad file descriptor) [pid 5295] close(17) = -1 EBADF (Bad file descriptor) [pid 5295] close(18) = -1 EBADF (Bad file descriptor) [pid 5295] close(19) = -1 EBADF (Bad file descriptor) [pid 5295] close(20) = -1 EBADF (Bad file descriptor) [pid 5295] close(21) = -1 EBADF (Bad file descriptor) [pid 5295] close(22) = -1 EBADF (Bad file descriptor) [pid 5295] close(23) = -1 EBADF (Bad file descriptor) [pid 5295] close(24) = -1 EBADF (Bad file descriptor) [pid 5295] close(25) = -1 EBADF (Bad file descriptor) [pid 5295] close(26) = -1 EBADF (Bad file descriptor) [pid 5295] close(27) = -1 EBADF (Bad file descriptor) [pid 5295] close(28) = -1 EBADF (Bad file descriptor) [pid 5295] close(29) = -1 EBADF (Bad file descriptor) [pid 5295] exit_group(0) = ? [pid 5295] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=214, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./106/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./106/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5296] exit(0 [pid 5064] unlink("./106/cgroup.cpu" [pid 5296] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5296] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=215, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./106/binderfs") = 0 [pid 5064] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./106/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./106/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./106/file0") = 0 [pid 5064] umount2("./106/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./106/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./106/cgroup") = 0 [pid 5064] umount2("./106/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./106/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./106/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./106") = 0 [pid 5064] mkdir("./107", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5297 attached , child_tidptr=0x555555a8a650) = 216 [pid 5297] set_robust_list(0x555555a8a660, 24) = 0 [pid 5297] chdir("./107") = 0 [pid 5297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5297] setpgid(0, 0) = 0 [pid 5297] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5297] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5297] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5297] write(3, "1000", 4) = 4 [pid 5297] close(3) = 0 [pid 5297] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5297] mkdir("./file0", 000) = 0 [pid 5297] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5297] open("./file0", O_RDONLY) = 3 [pid 5297] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5297] write(4, "-pids ", 6) = 6 [pid 5297] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5297] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5298 attached ) = 217 [pid 5297] ptrace(PTRACE_ATTACH, 217) = -1 EPERM (Operation not permitted) [pid 5297] close(3) = 0 [pid 5297] close(4) = 0 [pid 5297] close(5) = -1 EBADF (Bad file descriptor) [pid 5297] close(6) = -1 EBADF (Bad file descriptor) [pid 5297] close(7) = -1 EBADF (Bad file descriptor) [pid 5297] close(8) = -1 EBADF (Bad file descriptor) [pid 5297] close(9) = -1 EBADF (Bad file descriptor) [pid 5297] close(10) = -1 EBADF (Bad file descriptor) [pid 5297] close(11) = -1 EBADF (Bad file descriptor) [pid 5297] close(12) = -1 EBADF (Bad file descriptor) [pid 5297] close(13) = -1 EBADF (Bad file descriptor) [pid 5297] close(14) = -1 EBADF (Bad file descriptor) [pid 5297] close(15) = -1 EBADF (Bad file descriptor) [pid 5297] close(16) = -1 EBADF (Bad file descriptor) [pid 5297] close(17) = -1 EBADF (Bad file descriptor) [pid 5297] close(18) = -1 EBADF (Bad file descriptor) [pid 5297] close(19) = -1 EBADF (Bad file descriptor) [pid 5297] close(20) = -1 EBADF (Bad file descriptor) [pid 5297] close(21) = -1 EBADF (Bad file descriptor) [pid 5297] close(22) = -1 EBADF (Bad file descriptor) [pid 5297] close(23) = -1 EBADF (Bad file descriptor) [pid 5297] close(24) = -1 EBADF (Bad file descriptor) [pid 5297] close(25) = -1 EBADF (Bad file descriptor) [pid 5297] close(26) = -1 EBADF (Bad file descriptor) [pid 5297] close(27) = -1 EBADF (Bad file descriptor) [pid 5297] close(28) = -1 EBADF (Bad file descriptor) [pid 5297] close(29) = -1 EBADF (Bad file descriptor) [pid 5297] exit_group(0) = ? [pid 5297] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=216, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5298] exit(0 [pid 5064] umount2("./107/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5298] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./107/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./107/cgroup.cpu" [pid 5298] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./107/binderfs") = 0 [pid 5064] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./107/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./107/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./107/file0") = 0 [pid 5064] umount2("./107/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./107/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./107/cgroup") = 0 [pid 5064] umount2("./107/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./107/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./107/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./107") = 0 [pid 5064] mkdir("./108", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5299 attached , child_tidptr=0x555555a8a650) = 218 [pid 5299] set_robust_list(0x555555a8a660, 24) = 0 [pid 5299] chdir("./108") = 0 [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5299] setpgid(0, 0) = 0 [pid 5299] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5299] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5299] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5299] write(3, "1000", 4) = 4 [pid 5299] close(3) = 0 [pid 5299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5299] mkdir("./file0", 000) = 0 [pid 5299] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5299] open("./file0", O_RDONLY) = 3 [pid 5299] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5299] write(4, "-pids ", 6) = 6 [pid 5299] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5299] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5300 attached ) = 219 [pid 5299] ptrace(PTRACE_ATTACH, 219) = -1 EPERM (Operation not permitted) [pid 5299] close(3) = 0 [pid 5299] close(4) = 0 [pid 5299] close(5) = -1 EBADF (Bad file descriptor) [pid 5299] close(6) = -1 EBADF (Bad file descriptor) [pid 5299] close(7) = -1 EBADF (Bad file descriptor) [pid 5299] close(8) = -1 EBADF (Bad file descriptor) [pid 5299] close(9) = -1 EBADF (Bad file descriptor) [pid 5299] close(10) = -1 EBADF (Bad file descriptor) [pid 5299] close(11) = -1 EBADF (Bad file descriptor) [pid 5299] close(12) = -1 EBADF (Bad file descriptor) [pid 5299] close(13) = -1 EBADF (Bad file descriptor) [pid 5299] close(14) = -1 EBADF (Bad file descriptor) [pid 5299] close(15) = -1 EBADF (Bad file descriptor) [pid 5299] close(16) = -1 EBADF (Bad file descriptor) [pid 5299] close(17) = -1 EBADF (Bad file descriptor) [pid 5299] close(18) = -1 EBADF (Bad file descriptor) [pid 5299] close(19) = -1 EBADF (Bad file descriptor) [pid 5299] close(20) = -1 EBADF (Bad file descriptor) [pid 5299] close(21) = -1 EBADF (Bad file descriptor) [pid 5299] close(22) = -1 EBADF (Bad file descriptor) [pid 5299] close(23) = -1 EBADF (Bad file descriptor) [pid 5299] close(24) = -1 EBADF (Bad file descriptor) [pid 5299] close(25) = -1 EBADF (Bad file descriptor) [pid 5299] close(26) = -1 EBADF (Bad file descriptor) [pid 5299] close(27) = -1 EBADF (Bad file descriptor) [pid 5299] close(28) = -1 EBADF (Bad file descriptor) [pid 5299] close(29) = -1 EBADF (Bad file descriptor) [pid 5299] exit_group(0) = ? [pid 5299] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=218, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5300] exit(0 [pid 5064] umount2("./108/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5300] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./108/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./108/cgroup.cpu") = 0 [pid 5300] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=219, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./108/binderfs") = 0 [pid 5064] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./108/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./108/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./108/file0") = 0 [pid 5064] umount2("./108/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./108/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./108/cgroup") = 0 [pid 5064] umount2("./108/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./108/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./108/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./108") = 0 [pid 5064] mkdir("./109", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5301 attached [pid 5301] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 220 [pid 5301] <... set_robust_list resumed>) = 0 [pid 5301] chdir("./109") = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5301] setpgid(0, 0) = 0 [pid 5301] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5301] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5301] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5301] write(3, "1000", 4) = 4 [pid 5301] close(3) = 0 [pid 5301] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5301] mkdir("./file0", 000) = 0 [pid 5301] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5301] open("./file0", O_RDONLY) = 3 [pid 5301] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5301] write(4, "-pids ", 6) = 6 [pid 5301] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5301] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5302 attached ) = 221 [pid 5301] ptrace(PTRACE_ATTACH, 221) = -1 EPERM (Operation not permitted) [pid 5301] close(3) = 0 [pid 5301] close(4) = 0 [pid 5301] close(5) = -1 EBADF (Bad file descriptor) [pid 5301] close(6) = -1 EBADF (Bad file descriptor) [pid 5301] close(7) = -1 EBADF (Bad file descriptor) [pid 5301] close(8) = -1 EBADF (Bad file descriptor) [pid 5301] close(9) = -1 EBADF (Bad file descriptor) [pid 5301] close(10) = -1 EBADF (Bad file descriptor) [pid 5301] close(11) = -1 EBADF (Bad file descriptor) [pid 5301] close(12) = -1 EBADF (Bad file descriptor) [pid 5301] close(13) = -1 EBADF (Bad file descriptor) [pid 5301] close(14) = -1 EBADF (Bad file descriptor) [pid 5301] close(15) = -1 EBADF (Bad file descriptor) [pid 5301] close(16) = -1 EBADF (Bad file descriptor) [pid 5301] close(17) = -1 EBADF (Bad file descriptor) [pid 5301] close(18) = -1 EBADF (Bad file descriptor) [pid 5301] close(19) = -1 EBADF (Bad file descriptor) [pid 5301] close(20) = -1 EBADF (Bad file descriptor) [pid 5301] close(21) = -1 EBADF (Bad file descriptor) [pid 5301] close(22) = -1 EBADF (Bad file descriptor) [pid 5301] close(23) = -1 EBADF (Bad file descriptor) [pid 5301] close(24) = -1 EBADF (Bad file descriptor) [pid 5301] close(25) = -1 EBADF (Bad file descriptor) [pid 5301] close(26) = -1 EBADF (Bad file descriptor) [pid 5301] close(27) = -1 EBADF (Bad file descriptor) [pid 5301] close(28) = -1 EBADF (Bad file descriptor) [pid 5301] close(29) = -1 EBADF (Bad file descriptor) [pid 5301] exit_group(0) = ? [pid 5301] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=220, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./109/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./109/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./109/cgroup.cpu" [pid 5302] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5302] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=221, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./109/binderfs") = 0 [pid 5064] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./109/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./109/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./109/file0") = 0 [pid 5064] umount2("./109/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./109/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./109/cgroup") = 0 [pid 5064] umount2("./109/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./109/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./109/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./109") = 0 [pid 5064] mkdir("./110", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5303 attached , child_tidptr=0x555555a8a650) = 222 [pid 5303] set_robust_list(0x555555a8a660, 24) = 0 [pid 5303] chdir("./110") = 0 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5303] setpgid(0, 0) = 0 [pid 5303] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5303] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5303] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5303] write(3, "1000", 4) = 4 [pid 5303] close(3) = 0 [pid 5303] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5303] mkdir("./file0", 000) = 0 [pid 5303] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5303] open("./file0", O_RDONLY) = 3 [pid 5303] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5303] write(4, "-pids ", 6) = 6 [pid 5303] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5303] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5304 attached ) = 223 [pid 5303] ptrace(PTRACE_ATTACH, 223) = -1 EPERM (Operation not permitted) [pid 5303] close(3) = 0 [pid 5303] close(4) = 0 [pid 5303] close(5) = -1 EBADF (Bad file descriptor) [pid 5303] close(6) = -1 EBADF (Bad file descriptor) [pid 5303] close(7) = -1 EBADF (Bad file descriptor) [pid 5303] close(8) = -1 EBADF (Bad file descriptor) [pid 5303] close(9) = -1 EBADF (Bad file descriptor) [pid 5303] close(10) = -1 EBADF (Bad file descriptor) [pid 5303] close(11) = -1 EBADF (Bad file descriptor) [pid 5303] close(12) = -1 EBADF (Bad file descriptor) [pid 5303] close(13) = -1 EBADF (Bad file descriptor) [pid 5303] close(14) = -1 EBADF (Bad file descriptor) [pid 5303] close(15) = -1 EBADF (Bad file descriptor) [pid 5303] close(16) = -1 EBADF (Bad file descriptor) [pid 5303] close(17) = -1 EBADF (Bad file descriptor) [pid 5303] close(18) = -1 EBADF (Bad file descriptor) [pid 5303] close(19) = -1 EBADF (Bad file descriptor) [pid 5303] close(20) = -1 EBADF (Bad file descriptor) [pid 5303] close(21) = -1 EBADF (Bad file descriptor) [pid 5303] close(22) = -1 EBADF (Bad file descriptor) [pid 5303] close(23) = -1 EBADF (Bad file descriptor) [pid 5303] close(24) = -1 EBADF (Bad file descriptor) [pid 5303] close(25) = -1 EBADF (Bad file descriptor) [pid 5303] close(26) = -1 EBADF (Bad file descriptor) [pid 5303] close(27) = -1 EBADF (Bad file descriptor) [pid 5303] close(28) = -1 EBADF (Bad file descriptor) [pid 5303] close(29) = -1 EBADF (Bad file descriptor) [pid 5303] exit_group(0) = ? [pid 5303] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=222, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./110/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./110/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./110/cgroup.cpu") = 0 [pid 5304] exit(0 [pid 5064] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5304] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./110/binderfs" [pid 5304] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./110/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./110/file0") = 0 [pid 5064] umount2("./110/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./110/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./110/cgroup") = 0 [pid 5064] umount2("./110/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./110/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./110/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./110") = 0 [pid 5064] mkdir("./111", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5305 attached , child_tidptr=0x555555a8a650) = 224 [pid 5305] set_robust_list(0x555555a8a660, 24) = 0 [pid 5305] chdir("./111") = 0 [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5305] setpgid(0, 0) = 0 [pid 5305] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5305] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5305] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5305] write(3, "1000", 4) = 4 [pid 5305] close(3) = 0 [pid 5305] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5305] mkdir("./file0", 000) = 0 [pid 5305] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5305] open("./file0", O_RDONLY) = 3 [pid 5305] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5305] write(4, "-pids ", 6) = 6 [pid 5305] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5305] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5306 attached ) = 225 [pid 5305] ptrace(PTRACE_ATTACH, 225) = -1 EPERM (Operation not permitted) [pid 5305] close(3) = 0 [pid 5305] close(4) = 0 [pid 5305] close(5) = -1 EBADF (Bad file descriptor) [pid 5305] close(6) = -1 EBADF (Bad file descriptor) [pid 5305] close(7) = -1 EBADF (Bad file descriptor) [pid 5305] close(8) = -1 EBADF (Bad file descriptor) [pid 5305] close(9) = -1 EBADF (Bad file descriptor) [pid 5305] close(10) = -1 EBADF (Bad file descriptor) [pid 5305] close(11) = -1 EBADF (Bad file descriptor) [pid 5305] close(12) = -1 EBADF (Bad file descriptor) [pid 5305] close(13) = -1 EBADF (Bad file descriptor) [pid 5305] close(14) = -1 EBADF (Bad file descriptor) [pid 5305] close(15) = -1 EBADF (Bad file descriptor) [pid 5305] close(16) = -1 EBADF (Bad file descriptor) [pid 5305] close(17) = -1 EBADF (Bad file descriptor) [pid 5305] close(18) = -1 EBADF (Bad file descriptor) [pid 5305] close(19) = -1 EBADF (Bad file descriptor) [pid 5305] close(20) = -1 EBADF (Bad file descriptor) [pid 5305] close(21) = -1 EBADF (Bad file descriptor) [pid 5305] close(22) = -1 EBADF (Bad file descriptor) [pid 5305] close(23) = -1 EBADF (Bad file descriptor) [pid 5305] close(24) = -1 EBADF (Bad file descriptor) [pid 5305] close(25) = -1 EBADF (Bad file descriptor) [pid 5305] close(26) = -1 EBADF (Bad file descriptor) [pid 5305] close(27) = -1 EBADF (Bad file descriptor) [pid 5305] close(28) = -1 EBADF (Bad file descriptor) [pid 5305] close(29) = -1 EBADF (Bad file descriptor) [pid 5305] exit_group(0) = ? [pid 5305] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=224, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5064] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./111/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./111/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./111/cgroup.cpu" [pid 5306] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5306] <... exit resumed>) = ? [pid 5064] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5306] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=225, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./111/binderfs") = 0 [pid 5064] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./111/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./111/file0") = 0 [pid 5064] umount2("./111/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./111/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./111/cgroup") = 0 [pid 5064] umount2("./111/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./111/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./111/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./111") = 0 [pid 5064] mkdir("./112", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5307 attached , child_tidptr=0x555555a8a650) = 226 [pid 5307] set_robust_list(0x555555a8a660, 24) = 0 [pid 5307] chdir("./112") = 0 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] setpgid(0, 0) = 0 [pid 5307] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5307] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5307] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5307] write(3, "1000", 4) = 4 [pid 5307] close(3) = 0 [pid 5307] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5307] mkdir("./file0", 000) = 0 [pid 5307] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5307] open("./file0", O_RDONLY) = 3 [pid 5307] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5307] write(4, "-pids ", 6) = 6 [pid 5307] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5307] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5308 attached ) = 227 [pid 5307] ptrace(PTRACE_ATTACH, 227) = -1 EPERM (Operation not permitted) [pid 5307] close(3) = 0 [pid 5307] close(4) = 0 [pid 5307] close(5) = -1 EBADF (Bad file descriptor) [pid 5307] close(6) = -1 EBADF (Bad file descriptor) [pid 5307] close(7) = -1 EBADF (Bad file descriptor) [pid 5307] close(8) = -1 EBADF (Bad file descriptor) [pid 5307] close(9) = -1 EBADF (Bad file descriptor) [pid 5307] close(10) = -1 EBADF (Bad file descriptor) [pid 5307] close(11) = -1 EBADF (Bad file descriptor) [pid 5307] close(12) = -1 EBADF (Bad file descriptor) [pid 5307] close(13) = -1 EBADF (Bad file descriptor) [pid 5307] close(14) = -1 EBADF (Bad file descriptor) [pid 5307] close(15) = -1 EBADF (Bad file descriptor) [pid 5307] close(16) = -1 EBADF (Bad file descriptor) [pid 5307] close(17) = -1 EBADF (Bad file descriptor) [pid 5307] close(18) = -1 EBADF (Bad file descriptor) [pid 5307] close(19) = -1 EBADF (Bad file descriptor) [pid 5307] close(20) = -1 EBADF (Bad file descriptor) [pid 5307] close(21) = -1 EBADF (Bad file descriptor) [pid 5307] close(22) = -1 EBADF (Bad file descriptor) [pid 5307] close(23) = -1 EBADF (Bad file descriptor) [pid 5307] close(24) = -1 EBADF (Bad file descriptor) [pid 5307] close(25) = -1 EBADF (Bad file descriptor) [pid 5307] close(26) = -1 EBADF (Bad file descriptor) [pid 5307] close(27) = -1 EBADF (Bad file descriptor) [pid 5307] close(28) = -1 EBADF (Bad file descriptor) [pid 5307] close(29) = -1 EBADF (Bad file descriptor) [pid 5307] exit_group(0) = ? [pid 5307] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=226, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./112/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./112/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./112/cgroup.cpu") = 0 [pid 5064] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5308] exit(0 [pid 5064] unlink("./112/binderfs" [pid 5308] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5308] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=227, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./112/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./112/file0") = 0 [pid 5064] umount2("./112/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./112/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./112/cgroup") = 0 [pid 5064] umount2("./112/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./112/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./112/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./112") = 0 [pid 5064] mkdir("./113", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 228 ./strace-static-x86_64: Process 5309 attached [pid 5309] set_robust_list(0x555555a8a660, 24) = 0 [pid 5309] chdir("./113") = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5309] setpgid(0, 0) = 0 [pid 5309] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5309] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5309] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5309] write(3, "1000", 4) = 4 [pid 5309] close(3) = 0 [pid 5309] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5309] mkdir("./file0", 000) = 0 [pid 5309] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5309] open("./file0", O_RDONLY) = 3 [pid 5309] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5309] write(4, "-pids ", 6) = 6 [pid 5309] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5309] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5310 attached ) = 229 [pid 5309] ptrace(PTRACE_ATTACH, 229) = -1 EPERM (Operation not permitted) [pid 5309] close(3) = 0 [pid 5309] close(4) = 0 [pid 5309] close(5) = -1 EBADF (Bad file descriptor) [pid 5309] close(6) = -1 EBADF (Bad file descriptor) [pid 5309] close(7) = -1 EBADF (Bad file descriptor) [pid 5309] close(8) = -1 EBADF (Bad file descriptor) [pid 5309] close(9) = -1 EBADF (Bad file descriptor) [pid 5309] close(10) = -1 EBADF (Bad file descriptor) [pid 5309] close(11) = -1 EBADF (Bad file descriptor) [pid 5309] close(12) = -1 EBADF (Bad file descriptor) [pid 5309] close(13) = -1 EBADF (Bad file descriptor) [pid 5309] close(14) = -1 EBADF (Bad file descriptor) [pid 5309] close(15) = -1 EBADF (Bad file descriptor) [pid 5309] close(16) = -1 EBADF (Bad file descriptor) [pid 5309] close(17) = -1 EBADF (Bad file descriptor) [pid 5309] close(18) = -1 EBADF (Bad file descriptor) [pid 5309] close(19) = -1 EBADF (Bad file descriptor) [pid 5309] close(20) = -1 EBADF (Bad file descriptor) [pid 5309] close(21) = -1 EBADF (Bad file descriptor) [pid 5309] close(22) = -1 EBADF (Bad file descriptor) [pid 5309] close(23) = -1 EBADF (Bad file descriptor) [pid 5309] close(24) = -1 EBADF (Bad file descriptor) [pid 5309] close(25) = -1 EBADF (Bad file descriptor) [pid 5309] close(26) = -1 EBADF (Bad file descriptor) [pid 5309] close(27) = -1 EBADF (Bad file descriptor) [pid 5309] close(28) = -1 EBADF (Bad file descriptor) [pid 5309] close(29) = -1 EBADF (Bad file descriptor) [pid 5309] exit_group(0) = ? [pid 5309] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=228, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./113/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./113/cgroup.cpu", [pid 5310] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5310] <... exit resumed>) = ? [pid 5064] unlink("./113/cgroup.cpu") = 0 [pid 5064] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./113/binderfs", [pid 5310] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=229, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./113/binderfs") = 0 [pid 5064] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./113/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./113/file0") = 0 [pid 5064] umount2("./113/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./113/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./113/cgroup") = 0 [pid 5064] umount2("./113/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./113/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./113/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./113") = 0 [pid 5064] mkdir("./114", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5311 attached [pid 5311] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 230 [pid 5311] <... set_robust_list resumed>) = 0 [pid 5311] chdir("./114") = 0 [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5311] setpgid(0, 0) = 0 [pid 5311] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5311] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5311] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5311] write(3, "1000", 4) = 4 [pid 5311] close(3) = 0 [pid 5311] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5311] mkdir("./file0", 000) = 0 [pid 5311] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5311] open("./file0", O_RDONLY) = 3 [pid 5311] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5311] write(4, "-pids ", 6) = 6 [pid 5311] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5311] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5312 attached ) = 231 [pid 5311] ptrace(PTRACE_ATTACH, 231) = -1 EPERM (Operation not permitted) [pid 5311] close(3) = 0 [pid 5311] close(4) = 0 [pid 5311] close(5) = -1 EBADF (Bad file descriptor) [pid 5311] close(6) = -1 EBADF (Bad file descriptor) [pid 5311] close(7) = -1 EBADF (Bad file descriptor) [pid 5311] close(8) = -1 EBADF (Bad file descriptor) [pid 5311] close(9) = -1 EBADF (Bad file descriptor) [pid 5311] close(10) = -1 EBADF (Bad file descriptor) [pid 5311] close(11) = -1 EBADF (Bad file descriptor) [pid 5311] close(12) = -1 EBADF (Bad file descriptor) [pid 5311] close(13) = -1 EBADF (Bad file descriptor) [pid 5311] close(14) = -1 EBADF (Bad file descriptor) [pid 5311] close(15) = -1 EBADF (Bad file descriptor) [pid 5311] close(16) = -1 EBADF (Bad file descriptor) [pid 5311] close(17) = -1 EBADF (Bad file descriptor) [pid 5311] close(18) = -1 EBADF (Bad file descriptor) [pid 5311] close(19) = -1 EBADF (Bad file descriptor) [pid 5311] close(20) = -1 EBADF (Bad file descriptor) [pid 5311] close(21) = -1 EBADF (Bad file descriptor) [pid 5311] close(22) = -1 EBADF (Bad file descriptor) [pid 5311] close(23) = -1 EBADF (Bad file descriptor) [pid 5311] close(24) = -1 EBADF (Bad file descriptor) [pid 5311] close(25) = -1 EBADF (Bad file descriptor) [pid 5311] close(26) = -1 EBADF (Bad file descriptor) [pid 5311] close(27) = -1 EBADF (Bad file descriptor) [pid 5311] close(28) = -1 EBADF (Bad file descriptor) [pid 5311] close(29) = -1 EBADF (Bad file descriptor) [pid 5311] exit_group(0) = ? [pid 5311] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=230, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./114/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./114/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./114/cgroup.cpu") = 0 [pid 5064] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5312] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5312] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./114/binderfs") = 0 [pid 5064] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5312] +++ exited with 0 +++ [pid 5064] <... umount2 resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./114/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./114/file0") = 0 [pid 5064] umount2("./114/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./114/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./114/cgroup") = 0 [pid 5064] umount2("./114/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./114/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./114/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./114") = 0 [pid 5064] mkdir("./115", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5313 attached [pid 5313] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 232 [pid 5313] <... set_robust_list resumed>) = 0 [pid 5313] chdir("./115") = 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5313] setpgid(0, 0) = 0 [pid 5313] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5313] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5313] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5313] write(3, "1000", 4) = 4 [pid 5313] close(3) = 0 [pid 5313] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] mkdir("./file0", 000) = 0 [pid 5313] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5313] open("./file0", O_RDONLY) = 3 [pid 5313] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5313] write(4, "-pids ", 6) = 6 [pid 5313] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5313] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5314 attached ) = 233 [pid 5313] ptrace(PTRACE_ATTACH, 233) = -1 EPERM (Operation not permitted) [pid 5313] close(3) = 0 [pid 5313] close(4) = 0 [pid 5313] close(5) = -1 EBADF (Bad file descriptor) [pid 5313] close(6) = -1 EBADF (Bad file descriptor) [pid 5313] close(7) = -1 EBADF (Bad file descriptor) [pid 5313] close(8) = -1 EBADF (Bad file descriptor) [pid 5313] close(9) = -1 EBADF (Bad file descriptor) [pid 5313] close(10) = -1 EBADF (Bad file descriptor) [pid 5313] close(11) = -1 EBADF (Bad file descriptor) [pid 5313] close(12) = -1 EBADF (Bad file descriptor) [pid 5313] close(13) = -1 EBADF (Bad file descriptor) [pid 5313] close(14) = -1 EBADF (Bad file descriptor) [pid 5313] close(15) = -1 EBADF (Bad file descriptor) [pid 5313] close(16) = -1 EBADF (Bad file descriptor) [pid 5313] close(17) = -1 EBADF (Bad file descriptor) [pid 5313] close(18) = -1 EBADF (Bad file descriptor) [pid 5313] close(19) = -1 EBADF (Bad file descriptor) [pid 5313] close(20) = -1 EBADF (Bad file descriptor) [pid 5313] close(21) = -1 EBADF (Bad file descriptor) [pid 5313] close(22) = -1 EBADF (Bad file descriptor) [pid 5313] close(23) = -1 EBADF (Bad file descriptor) [pid 5313] close(24) = -1 EBADF (Bad file descriptor) [pid 5313] close(25) = -1 EBADF (Bad file descriptor) [pid 5313] close(26) = -1 EBADF (Bad file descriptor) [pid 5313] close(27) = -1 EBADF (Bad file descriptor) [pid 5313] close(28) = -1 EBADF (Bad file descriptor) [pid 5313] close(29) = -1 EBADF (Bad file descriptor) [pid 5313] exit_group(0) = ? [pid 5313] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=232, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./115/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./115/cgroup.cpu", [pid 5314] exit(0 [pid 5064] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5314] <... exit resumed>) = ? [pid 5064] unlink("./115/cgroup.cpu") = 0 [pid 5064] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5314] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=233, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./115/binderfs") = 0 [pid 5064] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./115/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./115/file0") = 0 [pid 5064] umount2("./115/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./115/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./115/cgroup") = 0 [pid 5064] umount2("./115/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./115/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./115/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./115") = 0 [pid 5064] mkdir("./116", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5315 attached , child_tidptr=0x555555a8a650) = 234 [pid 5315] set_robust_list(0x555555a8a660, 24) = 0 [pid 5315] chdir("./116") = 0 [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5315] setpgid(0, 0) = 0 [pid 5315] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5315] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5315] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5315] write(3, "1000", 4) = 4 [pid 5315] close(3) = 0 [pid 5315] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5315] mkdir("./file0", 000) = 0 [pid 5315] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5315] open("./file0", O_RDONLY) = 3 [pid 5315] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5315] write(4, "-pids ", 6) = 6 [pid 5315] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5315] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5316 attached ) = 235 [pid 5315] ptrace(PTRACE_ATTACH, 235) = -1 EPERM (Operation not permitted) [pid 5315] close(3) = 0 [pid 5315] close(4) = 0 [pid 5315] close(5) = -1 EBADF (Bad file descriptor) [pid 5315] close(6) = -1 EBADF (Bad file descriptor) [pid 5315] close(7) = -1 EBADF (Bad file descriptor) [pid 5315] close(8) = -1 EBADF (Bad file descriptor) [pid 5315] close(9) = -1 EBADF (Bad file descriptor) [pid 5315] close(10) = -1 EBADF (Bad file descriptor) [pid 5315] close(11) = -1 EBADF (Bad file descriptor) [pid 5315] close(12) = -1 EBADF (Bad file descriptor) [pid 5315] close(13) = -1 EBADF (Bad file descriptor) [pid 5315] close(14) = -1 EBADF (Bad file descriptor) [pid 5315] close(15) = -1 EBADF (Bad file descriptor) [pid 5315] close(16) = -1 EBADF (Bad file descriptor) [pid 5315] close(17) = -1 EBADF (Bad file descriptor) [pid 5315] close(18) = -1 EBADF (Bad file descriptor) [pid 5315] close(19) = -1 EBADF (Bad file descriptor) [pid 5315] close(20) = -1 EBADF (Bad file descriptor) [pid 5315] close(21) = -1 EBADF (Bad file descriptor) [pid 5315] close(22) = -1 EBADF (Bad file descriptor) [pid 5315] close(23) = -1 EBADF (Bad file descriptor) [pid 5315] close(24) = -1 EBADF (Bad file descriptor) [pid 5315] close(25) = -1 EBADF (Bad file descriptor) [pid 5315] close(26) = -1 EBADF (Bad file descriptor) [pid 5315] close(27) = -1 EBADF (Bad file descriptor) [pid 5315] close(28 [pid 5316] exit(0 [pid 5315] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 5315] close(29) = -1 EBADF (Bad file descriptor) [pid 5315] exit_group(0) = ? [pid 5316] <... exit resumed>) = ? [pid 5315] +++ exited with 0 +++ [pid 5316] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=234, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./116/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./116/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./116/cgroup.cpu") = 0 [pid 5064] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./116/binderfs") = 0 [pid 5064] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./116/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./116/file0") = 0 [pid 5064] umount2("./116/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./116/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./116/cgroup") = 0 [pid 5064] umount2("./116/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./116/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./116/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./116") = 0 [pid 5064] mkdir("./117", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5317 attached , child_tidptr=0x555555a8a650) = 236 [pid 5317] set_robust_list(0x555555a8a660, 24) = 0 [pid 5317] chdir("./117") = 0 [pid 5317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5317] setpgid(0, 0) = 0 [pid 5317] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5317] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5317] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5317] write(3, "1000", 4) = 4 [pid 5317] close(3) = 0 [pid 5317] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5317] mkdir("./file0", 000) = 0 [pid 5317] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5317] open("./file0", O_RDONLY) = 3 [pid 5317] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5317] write(4, "-pids ", 6) = 6 [pid 5317] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5317] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5318 attached ) = 237 [pid 5317] ptrace(PTRACE_ATTACH, 237) = -1 EPERM (Operation not permitted) [pid 5317] close(3) = 0 [pid 5317] close(4) = 0 [pid 5317] close(5) = -1 EBADF (Bad file descriptor) [pid 5317] close(6) = -1 EBADF (Bad file descriptor) [pid 5317] close(7) = -1 EBADF (Bad file descriptor) [pid 5317] close(8) = -1 EBADF (Bad file descriptor) [pid 5317] close(9) = -1 EBADF (Bad file descriptor) [pid 5317] close(10) = -1 EBADF (Bad file descriptor) [pid 5317] close(11) = -1 EBADF (Bad file descriptor) [pid 5317] close(12) = -1 EBADF (Bad file descriptor) [pid 5317] close(13) = -1 EBADF (Bad file descriptor) [pid 5317] close(14) = -1 EBADF (Bad file descriptor) [pid 5317] close(15) = -1 EBADF (Bad file descriptor) [pid 5317] close(16) = -1 EBADF (Bad file descriptor) [pid 5317] close(17) = -1 EBADF (Bad file descriptor) [pid 5317] close(18) = -1 EBADF (Bad file descriptor) [pid 5317] close(19) = -1 EBADF (Bad file descriptor) [pid 5317] close(20) = -1 EBADF (Bad file descriptor) [pid 5317] close(21) = -1 EBADF (Bad file descriptor) [pid 5317] close(22) = -1 EBADF (Bad file descriptor) [pid 5317] close(23) = -1 EBADF (Bad file descriptor) [pid 5317] close(24) = -1 EBADF (Bad file descriptor) [pid 5317] close(25) = -1 EBADF (Bad file descriptor) [pid 5317] close(26) = -1 EBADF (Bad file descriptor) [pid 5317] close(27) = -1 EBADF (Bad file descriptor) [pid 5317] close(28) = -1 EBADF (Bad file descriptor) [pid 5317] close(29) = -1 EBADF (Bad file descriptor) [pid 5317] exit_group(0) = ? [pid 5317] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=236, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5318] exit(0 [pid 5064] umount2("./117/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5318] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./117/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./117/cgroup.cpu" [pid 5318] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./117/binderfs") = 0 [pid 5064] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./117/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./117/file0") = 0 [pid 5064] umount2("./117/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./117/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./117/cgroup") = 0 [pid 5064] umount2("./117/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./117/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./117/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./117") = 0 [pid 5064] mkdir("./118", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5319 attached , child_tidptr=0x555555a8a650) = 238 [pid 5319] set_robust_list(0x555555a8a660, 24) = 0 [pid 5319] chdir("./118") = 0 [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5319] setpgid(0, 0) = 0 [pid 5319] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5319] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5319] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5319] write(3, "1000", 4) = 4 [pid 5319] close(3) = 0 [pid 5319] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5319] mkdir("./file0", 000) = 0 [pid 5319] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5319] open("./file0", O_RDONLY) = 3 [pid 5319] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5319] write(4, "-pids ", 6) = 6 [pid 5319] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5319] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5320 attached ) = 239 [pid 5319] ptrace(PTRACE_ATTACH, 239) = -1 EPERM (Operation not permitted) [pid 5319] close(3) = 0 [pid 5319] close(4) = 0 [pid 5319] close(5) = -1 EBADF (Bad file descriptor) [pid 5319] close(6) = -1 EBADF (Bad file descriptor) [pid 5319] close(7) = -1 EBADF (Bad file descriptor) [pid 5319] close(8) = -1 EBADF (Bad file descriptor) [pid 5319] close(9) = -1 EBADF (Bad file descriptor) [pid 5319] close(10) = -1 EBADF (Bad file descriptor) [pid 5319] close(11) = -1 EBADF (Bad file descriptor) [pid 5319] close(12) = -1 EBADF (Bad file descriptor) [pid 5319] close(13) = -1 EBADF (Bad file descriptor) [pid 5319] close(14) = -1 EBADF (Bad file descriptor) [pid 5319] close(15) = -1 EBADF (Bad file descriptor) [pid 5319] close(16) = -1 EBADF (Bad file descriptor) [pid 5319] close(17) = -1 EBADF (Bad file descriptor) [pid 5319] close(18) = -1 EBADF (Bad file descriptor) [pid 5319] close(19) = -1 EBADF (Bad file descriptor) [pid 5319] close(20) = -1 EBADF (Bad file descriptor) [pid 5319] close(21) = -1 EBADF (Bad file descriptor) [pid 5319] close(22) = -1 EBADF (Bad file descriptor) [pid 5319] close(23) = -1 EBADF (Bad file descriptor) [pid 5319] close(24) = -1 EBADF (Bad file descriptor) [pid 5319] close(25) = -1 EBADF (Bad file descriptor) [pid 5319] close(26) = -1 EBADF (Bad file descriptor) [pid 5319] close(27) = -1 EBADF (Bad file descriptor) [pid 5319] close(28) = -1 EBADF (Bad file descriptor) [pid 5319] close(29) = -1 EBADF (Bad file descriptor) [pid 5319] exit_group(0) = ? [pid 5319] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=238, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./118/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./118/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./118/cgroup.cpu") = 0 [pid 5064] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./118/binderfs" [pid 5320] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5320] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=239, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./118/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./118/file0") = 0 [pid 5064] umount2("./118/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./118/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./118/cgroup") = 0 [pid 5064] umount2("./118/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./118/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./118/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./118") = 0 [pid 5064] mkdir("./119", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5321 attached , child_tidptr=0x555555a8a650) = 240 [pid 5321] set_robust_list(0x555555a8a660, 24) = 0 [pid 5321] chdir("./119") = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5321] setpgid(0, 0) = 0 [pid 5321] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5321] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5321] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5321] write(3, "1000", 4) = 4 [pid 5321] close(3) = 0 [pid 5321] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5321] mkdir("./file0", 000) = 0 [pid 5321] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5321] open("./file0", O_RDONLY) = 3 [pid 5321] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5321] write(4, "-pids ", 6) = 6 [pid 5321] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5321] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5322 attached ) = 241 [pid 5321] ptrace(PTRACE_ATTACH, 241) = -1 EPERM (Operation not permitted) [pid 5321] close(3) = 0 [pid 5321] close(4) = 0 [pid 5321] close(5) = -1 EBADF (Bad file descriptor) [pid 5321] close(6) = -1 EBADF (Bad file descriptor) [pid 5321] close(7) = -1 EBADF (Bad file descriptor) [pid 5321] close(8) = -1 EBADF (Bad file descriptor) [pid 5321] close(9) = -1 EBADF (Bad file descriptor) [pid 5321] close(10) = -1 EBADF (Bad file descriptor) [pid 5321] close(11) = -1 EBADF (Bad file descriptor) [pid 5321] close(12) = -1 EBADF (Bad file descriptor) [pid 5321] close(13) = -1 EBADF (Bad file descriptor) [pid 5321] close(14) = -1 EBADF (Bad file descriptor) [pid 5321] close(15) = -1 EBADF (Bad file descriptor) [pid 5321] close(16) = -1 EBADF (Bad file descriptor) [pid 5321] close(17) = -1 EBADF (Bad file descriptor) [pid 5321] close(18) = -1 EBADF (Bad file descriptor) [pid 5321] close(19) = -1 EBADF (Bad file descriptor) [pid 5321] close(20) = -1 EBADF (Bad file descriptor) [pid 5321] close(21) = -1 EBADF (Bad file descriptor) [pid 5321] close(22) = -1 EBADF (Bad file descriptor) [pid 5321] close(23) = -1 EBADF (Bad file descriptor) [pid 5321] close(24) = -1 EBADF (Bad file descriptor) [pid 5321] close(25) = -1 EBADF (Bad file descriptor) [pid 5321] close(26) = -1 EBADF (Bad file descriptor) [pid 5321] close(27) = -1 EBADF (Bad file descriptor) [pid 5321] close(28) = -1 EBADF (Bad file descriptor) [pid 5321] close(29) = -1 EBADF (Bad file descriptor) [pid 5321] exit_group(0) = ? [pid 5321] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=240, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./119/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./119/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./119/cgroup.cpu") = 0 [pid 5064] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5322] exit(0) = ? [pid 5064] unlink("./119/binderfs") = 0 [pid 5322] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=241, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./119/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./119/file0") = 0 [pid 5064] umount2("./119/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./119/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./119/cgroup") = 0 [pid 5064] umount2("./119/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./119/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./119/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./119") = 0 [pid 5064] mkdir("./120", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5323 attached , child_tidptr=0x555555a8a650) = 242 [pid 5323] set_robust_list(0x555555a8a660, 24) = 0 [pid 5323] chdir("./120") = 0 [pid 5323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5323] setpgid(0, 0) = 0 [pid 5323] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5323] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5323] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5323] write(3, "1000", 4) = 4 [pid 5323] close(3) = 0 [pid 5323] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5323] mkdir("./file0", 000) = 0 [pid 5323] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5323] open("./file0", O_RDONLY) = 3 [pid 5323] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5323] write(4, "-pids ", 6) = 6 [pid 5323] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5323] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5324 attached ) = 243 [pid 5323] ptrace(PTRACE_ATTACH, 243) = -1 EPERM (Operation not permitted) [pid 5323] close(3) = 0 [pid 5323] close(4) = 0 [pid 5323] close(5) = -1 EBADF (Bad file descriptor) [pid 5323] close(6) = -1 EBADF (Bad file descriptor) [pid 5323] close(7) = -1 EBADF (Bad file descriptor) [pid 5323] close(8) = -1 EBADF (Bad file descriptor) [pid 5323] close(9) = -1 EBADF (Bad file descriptor) [pid 5323] close(10) = -1 EBADF (Bad file descriptor) [pid 5323] close(11) = -1 EBADF (Bad file descriptor) [pid 5323] close(12) = -1 EBADF (Bad file descriptor) [pid 5323] close(13) = -1 EBADF (Bad file descriptor) [pid 5323] close(14) = -1 EBADF (Bad file descriptor) [pid 5323] close(15) = -1 EBADF (Bad file descriptor) [pid 5323] close(16) = -1 EBADF (Bad file descriptor) [pid 5323] close(17) = -1 EBADF (Bad file descriptor) [pid 5323] close(18) = -1 EBADF (Bad file descriptor) [pid 5323] close(19) = -1 EBADF (Bad file descriptor) [pid 5323] close(20) = -1 EBADF (Bad file descriptor) [pid 5323] close(21) = -1 EBADF (Bad file descriptor) [pid 5323] close(22) = -1 EBADF (Bad file descriptor) [pid 5323] close(23) = -1 EBADF (Bad file descriptor) [pid 5323] close(24) = -1 EBADF (Bad file descriptor) [pid 5323] close(25) = -1 EBADF (Bad file descriptor) [pid 5323] close(26) = -1 EBADF (Bad file descriptor) [pid 5323] close(27) = -1 EBADF (Bad file descriptor) [pid 5323] close(28) = -1 EBADF (Bad file descriptor) [pid 5323] close(29) = -1 EBADF (Bad file descriptor) [pid 5323] exit_group(0) = ? [pid 5323] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=242, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./120/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./120/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./120/cgroup.cpu") = 0 [pid 5064] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./120/binderfs" [pid 5324] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5324] <... exit resumed>) = ? [pid 5064] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5324] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=243, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./120/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./120/file0") = 0 [pid 5064] umount2("./120/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./120/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./120/cgroup") = 0 [pid 5064] umount2("./120/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./120/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./120/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./120") = 0 [pid 5064] mkdir("./121", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5325 attached , child_tidptr=0x555555a8a650) = 244 [pid 5325] set_robust_list(0x555555a8a660, 24) = 0 [pid 5325] chdir("./121") = 0 [pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5325] setpgid(0, 0) = 0 [pid 5325] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5325] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5325] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5325] write(3, "1000", 4) = 4 [pid 5325] close(3) = 0 [pid 5325] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5325] mkdir("./file0", 000) = 0 [pid 5325] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5325] open("./file0", O_RDONLY) = 3 [pid 5325] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5325] write(4, "-pids ", 6) = 6 [pid 5325] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5325] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5326 attached ) = 245 [pid 5325] ptrace(PTRACE_ATTACH, 245) = -1 EPERM (Operation not permitted) [pid 5325] close(3) = 0 [pid 5325] close(4) = 0 [pid 5325] close(5) = -1 EBADF (Bad file descriptor) [pid 5325] close(6) = -1 EBADF (Bad file descriptor) [pid 5325] close(7) = -1 EBADF (Bad file descriptor) [pid 5325] close(8) = -1 EBADF (Bad file descriptor) [pid 5325] close(9) = -1 EBADF (Bad file descriptor) [pid 5325] close(10) = -1 EBADF (Bad file descriptor) [pid 5325] close(11) = -1 EBADF (Bad file descriptor) [pid 5325] close(12) = -1 EBADF (Bad file descriptor) [pid 5325] close(13) = -1 EBADF (Bad file descriptor) [pid 5325] close(14) = -1 EBADF (Bad file descriptor) [pid 5325] close(15) = -1 EBADF (Bad file descriptor) [pid 5325] close(16) = -1 EBADF (Bad file descriptor) [pid 5325] close(17) = -1 EBADF (Bad file descriptor) [pid 5325] close(18) = -1 EBADF (Bad file descriptor) [pid 5325] close(19) = -1 EBADF (Bad file descriptor) [pid 5325] close(20) = -1 EBADF (Bad file descriptor) [pid 5325] close(21) = -1 EBADF (Bad file descriptor) [pid 5325] close(22) = -1 EBADF (Bad file descriptor) [pid 5325] close(23) = -1 EBADF (Bad file descriptor) [pid 5325] close(24) = -1 EBADF (Bad file descriptor) [pid 5325] close(25) = -1 EBADF (Bad file descriptor) [pid 5325] close(26) = -1 EBADF (Bad file descriptor) [pid 5325] close(27) = -1 EBADF (Bad file descriptor) [pid 5325] close(28) = -1 EBADF (Bad file descriptor) [pid 5325] close(29) = -1 EBADF (Bad file descriptor) [pid 5325] exit_group(0) = ? [pid 5325] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=244, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, [pid 5326] exit(0 [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5326] <... exit resumed>) = ? [pid 5064] umount2("./121/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./121/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5326] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=245, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./121/cgroup.cpu") = 0 [pid 5064] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./121/binderfs") = 0 [pid 5064] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./121/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./121/file0") = 0 [pid 5064] umount2("./121/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./121/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./121/cgroup") = 0 [pid 5064] umount2("./121/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./121/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./121/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./121") = 0 [pid 5064] mkdir("./122", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5327 attached , child_tidptr=0x555555a8a650) = 246 [pid 5327] set_robust_list(0x555555a8a660, 24) = 0 [pid 5327] chdir("./122") = 0 [pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5327] setpgid(0, 0) = 0 [pid 5327] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5327] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5327] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5327] write(3, "1000", 4) = 4 [pid 5327] close(3) = 0 [pid 5327] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5327] mkdir("./file0", 000) = 0 [pid 5327] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5327] open("./file0", O_RDONLY) = 3 [pid 5327] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [ 151.847982][ C0] [ 151.850347][ C0] ======================================================== [ 151.857556][ C0] WARNING: possible irq lock inversion dependency detected [ 151.864760][ C0] 6.7.0-rc1-next-20231116-syzkaller #0 Not tainted [ 151.871259][ C0] -------------------------------------------------------- [ 151.878448][ C0] swapper/0/0 just changed the state of lock: [ 151.884534][ C0] ffffffff8cff86b8 (css_set_lock){..-.}-{2:2}, at: cgroup_free+0x7c/0x1d0 [ 151.893133][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 151.900710][ C0] (&sighand->siglock){+.+.}-{2:2} [ 151.900745][ C0] [ 151.900745][ C0] [ 151.900745][ C0] and interrupts could create inverse lock ordering between them. [ 151.900745][ C0] [ 151.920172][ C0] [ 151.920172][ C0] other info that might help us debug this: [ 151.928234][ C0] Possible interrupt unsafe locking scenario: [ 151.928234][ C0] [ 151.936552][ C0] CPU0 CPU1 [ 151.941923][ C0] ---- ---- [ 151.947290][ C0] lock(&sighand->siglock); [ 151.951893][ C0] local_irq_disable(); [ 151.958652][ C0] lock(css_set_lock); [ 151.965337][ C0] lock(&sighand->siglock); [ 151.972497][ C0] [ 151.975953][ C0] lock(css_set_lock); [ 151.980292][ C0] [ 151.980292][ C0] *** DEADLOCK *** [ 151.980292][ C0] [ 151.988436][ C0] 2 locks held by swapper/0/0: [ 151.993238][ C0] #0: ffffffff8cfacf40 (rcu_callback){....}-{0:0}, at: rcu_core+0x7cc/0x16b0 [ 152.002185][ C0] #1: ffffffff8ce58800 (put_task_map-wait-type-override){+...}-{3:3}, at: delayed_put_task_struct+0x21e/0x2d0 [ 152.013978][ C0] [ 152.013978][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 152.023417][ C0] -> (&sighand->siglock){+.+.}-{2:2} { [ 152.029009][ C0] HARDIRQ-ON-W at: [ 152.033084][ C0] lock_acquire+0x1b1/0x530 [ 152.039437][ C0] _raw_spin_lock+0x2e/0x40 [ 152.045795][ C0] ptrace_attach+0x401/0x650 [ 152.052366][ C0] __do_sys_ptrace+0x204/0x230 [ 152.059007][ C0] do_syscall_64+0x40/0x110 [ 152.065364][ C0] entry_SYSCALL_64_after_hwframe+0x62/0x6a [ 152.073118][ C0] SOFTIRQ-ON-W at: [ 152.077196][ C0] lock_acquire+0x1b1/0x530 [ 152.083538][ C0] _raw_spin_lock+0x2e/0x40 [ 152.089882][ C0] ptrace_attach+0x401/0x650 [ 152.096320][ C0] __do_sys_ptrace+0x204/0x230 [ 152.102933][ C0] do_syscall_64+0x40/0x110 [ 152.109279][ C0] entry_SYSCALL_64_after_hwframe+0x62/0x6a [ 152.117020][ C0] INITIAL USE at: [ 152.121011][ C0] lock_acquire+0x1b1/0x530 [ 152.127266][ C0] _raw_spin_lock_irq+0x36/0x50 [ 152.133869][ C0] calculate_sigpending+0x44/0xa0 [ 152.140651][ C0] ret_from_fork+0x23/0x80 [ 152.146826][ C0] ret_from_fork_asm+0x11/0x20 [ 152.153347][ C0] } [ 152.155934][ C0] ... key at: [] __key.341+0x0/0x40 [ 152.163335][ C0] ... acquired at: [ 152.167227][ C0] _raw_spin_lock_irqsave+0x3a/0x50 [ 152.172615][ C0] __lock_task_sighand+0xc2/0x340 [ 152.177835][ C0] cgroup_freeze_task+0x80/0x190 [ 152.182979][ C0] cgroup_freezer_migrate_task+0x1b7/0x3a0 [ 152.188987][ C0] cgroup_migrate_execute+0x2d3/0x1230 [ 152.194640][ C0] cgroup_update_dfl_csses+0x51b/0x640 [ 152.200291][ C0] cgroup_subtree_control_write+0xb94/0xed0 [ 152.206399][ C0] cgroup_file_write+0x209/0x7c0 [ 152.211527][ C0] kernfs_fop_write_iter+0x33f/0x500 [ 152.217007][ C0] vfs_write+0x64d/0xdf0 [ 152.221440][ C0] ksys_write+0x12f/0x250 [ 152.225957][ C0] do_syscall_64+0x40/0x110 [ 152.230654][ C0] entry_SYSCALL_64_after_hwframe+0x62/0x6a [ 152.236747][ C0] [ 152.239077][ C0] -> (css_set_lock){..-.}-{2:2} { [ 152.244137][ C0] IN-SOFTIRQ-W at: [ 152.248124][ C0] lock_acquire+0x1b1/0x530 [ 152.254403][ C0] _raw_spin_lock_irqsave+0x3a/0x50 [ 152.261269][ C0] cgroup_free+0x7c/0x1d0 [ 152.267269][ C0] __put_task_struct+0x10b/0x3d0 [ 152.273874][ C0] delayed_put_task_struct+0x22c/0x2d0 [ 152.281013][ C0] rcu_core+0x828/0x16b0 [ 152.286934][ C0] __do_softirq+0x216/0x8d5 [ 152.293108][ C0] irq_exit_rcu+0xb5/0x120 [ 152.299199][ C0] sysvec_apic_timer_interrupt+0x95/0xb0 [ 152.306505][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 152.314166][ C0] acpi_safe_halt+0x1a/0x20 [ 152.324689][ C0] acpi_idle_enter+0xc5/0x160 [ 152.331056][ C0] cpuidle_enter_state+0x83/0x500 [ 152.337781][ C0] cpuidle_enter+0x4e/0xa0 [ 152.343963][ C0] do_idle+0x314/0x3f0 [ 152.349706][ C0] cpu_startup_entry+0x4f/0x60 [ 152.356230][ C0] rest_init+0x16f/0x2b0 [ 152.362135][ C0] arch_call_rest_init+0x13/0x30 [ 152.368769][ C0] start_kernel+0x39e/0x480 [ 152.374952][ C0] x86_64_start_reservations+0x18/0x30 [ 152.382078][ C0] x86_64_start_kernel+0xb2/0xc0 [ 152.388680][ C0] secondary_startup_64_no_verify+0x166/0x16b [ 152.396424][ C0] INITIAL USE at: [ 152.400329][ C0] lock_acquire+0x1b1/0x530 [ 152.406412][ C0] _raw_spin_lock_irq+0x36/0x50 [ 152.412840][ C0] cgroup_setup_root+0x62c/0xa00 [ 152.419365][ C0] cgroup_init+0x23f/0x1100 [ 152.425446][ C0] start_kernel+0x385/0x480 [ 152.431538][ C0] x86_64_start_reservations+0x18/0x30 [ 152.438602][ C0] x86_64_start_kernel+0xb2/0xc0 [ 152.445129][ C0] secondary_startup_64_no_verify+0x166/0x16b [ 152.452870][ C0] } [ 152.455370][ C0] ... key at: [] css_set_lock+0x18/0x60 [ 152.463019][ C0] ... acquired at: [ 152.466834][ C0] __lock_acquire+0x13c2/0x3b10 [ 152.471866][ C0] lock_acquire+0x1b1/0x530 [ 152.476551][ C0] _raw_spin_lock_irqsave+0x3a/0x50 [ 152.481953][ C0] cgroup_free+0x7c/0x1d0 [ 152.486475][ C0] __put_task_struct+0x10b/0x3d0 [ 152.491603][ C0] delayed_put_task_struct+0x22c/0x2d0 [ 152.497248][ C0] rcu_core+0x828/0x16b0 [ 152.501690][ C0] __do_softirq+0x216/0x8d5 [ 152.506404][ C0] irq_exit_rcu+0xb5/0x120 [ 152.511033][ C0] sysvec_apic_timer_interrupt+0x95/0xb0 [ 152.516869][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 152.523064][ C0] acpi_safe_halt+0x1a/0x20 [ 152.527796][ C0] acpi_idle_enter+0xc5/0x160 [ 152.532657][ C0] cpuidle_enter_state+0x83/0x500 [ 152.537896][ C0] cpuidle_enter+0x4e/0xa0 [ 152.542506][ C0] do_idle+0x314/0x3f0 [ 152.546760][ C0] cpu_startup_entry+0x4f/0x60 [ 152.551719][ C0] rest_init+0x16f/0x2b0 [ 152.556148][ C0] arch_call_rest_init+0x13/0x30 [ 152.561281][ C0] start_kernel+0x39e/0x480 [ 152.565982][ C0] x86_64_start_reservations+0x18/0x30 [ 152.571630][ C0] x86_64_start_kernel+0xb2/0xc0 [ 152.576751][ C0] secondary_startup_64_no_verify+0x166/0x16b [ 152.583016][ C0] [ 152.585338][ C0] [ 152.585338][ C0] stack backtrace: [ 152.591226][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.7.0-rc1-next-20231116-syzkaller #0 [ 152.600344][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 152.610407][ C0] Call Trace: [ 152.613692][ C0] [ 152.616545][ C0] dump_stack_lvl+0xd9/0x1b0 [ 152.621171][ C0] print_irq_inversion_bug.part.0+0x3e1/0x590 [ 152.627274][ C0] ? print_shortest_lock_dependencies+0x1b0/0x1b0 [ 152.633727][ C0] ? static_obj+0xc0/0xc0 [ 152.638090][ C0] ? free_zapped_rcu+0x80/0x80 [ 152.642884][ C0] mark_lock+0x570/0xc50 [ 152.647144][ C0] ? print_usage_bug.part.0+0x550/0x550 [ 152.652703][ C0] ? hlock_class+0x4e/0x130 [ 152.657239][ C0] ? mark_lock+0xb5/0xc50 [ 152.661602][ C0] ? hlock_class+0x4e/0x130 [ 152.666187][ C0] ? mark_lock+0xb5/0xc50 [ 152.670551][ C0] ? print_usage_bug.part.0+0x550/0x550 [ 152.676145][ C0] __lock_acquire+0x13c2/0x3b10 [ 152.681037][ C0] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 152.687125][ C0] lock_acquire+0x1b1/0x530 [ 152.691640][ C0] ? cgroup_free+0x7c/0x1d0 [ 152.696172][ C0] ? lock_sync+0x190/0x190 [ 152.700601][ C0] ? lock_acquire+0x1b1/0x530 [ 152.705290][ C0] ? refcount_dec_not_one+0x139/0x1d0 [ 152.710685][ C0] ? refcount_warn_saturate+0x210/0x210 [ 152.716270][ C0] _raw_spin_lock_irqsave+0x3a/0x50 [ 152.721604][ C0] ? cgroup_free+0x7c/0x1d0 [ 152.726242][ C0] cgroup_free+0x7c/0x1d0 [ 152.730618][ C0] __put_task_struct+0x10b/0x3d0 [ 152.735601][ C0] ? delayed_put_task_struct+0x21e/0x2d0 [ 152.741270][ C0] delayed_put_task_struct+0x22c/0x2d0 [ 152.746753][ C0] ? delayed_put_task_struct+0x21e/0x2d0 [ 152.752405][ C0] ? rcu_core+0x826/0x16b0 [ 152.756848][ C0] rcu_core+0x828/0x16b0 [ 152.761123][ C0] ? rcutree_report_cpu_dead+0x4c0/0x4c0 [ 152.766881][ C0] __do_softirq+0x216/0x8d5 [ 152.771406][ C0] ? __lock_text_end+0x3/0x3 [ 152.776013][ C0] irq_exit_rcu+0xb5/0x120 [ 152.780470][ C0] sysvec_apic_timer_interrupt+0x95/0xb0 [ 152.786131][ C0] [ 152.789068][ C0] [ 152.792006][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 152.798048][ C0] RIP: 0010:acpi_safe_halt+0x1a/0x20 [ 152.803365][ C0] Code: 08 ed c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 48 8b 05 a8 8a 82 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 78 0a b9 00 fb f4 c3 0f 1f 40 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb [ 152.823083][ C0] RSP: 0018:ffffffff8cc07d68 EFLAGS: 00000246 [ 152.829163][ C0] RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8a8117f5 [ 152.837143][ C0] RDX: 0000000000000001 RSI: ffff8880156c2800 RDI: ffff8880156c2864 [ 152.845128][ C0] RBP: ffff8880156c2864 R08: 0000000000000001 R09: ffffed1017306dbd [ 152.853110][ C0] R10: ffff8880b9836deb R11: 0000000000000000 R12: ffff888147ac4000 [ 152.861094][ C0] R13: ffffffff8db1a520 R14: 0000000000000000 R15: 0000000000000000 [ 152.869090][ C0] ? ct_kernel_exit+0x135/0x190 [ 152.873977][ C0] acpi_idle_enter+0xc5/0x160 [ 152.878669][ C0] cpuidle_enter_state+0x83/0x500 [ 152.883812][ C0] ? mark_tsc_async_resets+0x50/0x50 [ 152.889159][ C0] cpuidle_enter+0x4e/0xa0 [ 152.893602][ C0] do_idle+0x314/0x3f0 [ 152.897687][ C0] ? arch_cpu_idle_exit+0x30/0x30 [ 152.902746][ C0] cpu_startup_entry+0x4f/0x60 [ 152.907551][ C0] rest_init+0x16f/0x2b0 [ 152.912008][ C0] ? regulator_has_full_constraints+0x9/0x20 [ 152.918059][ C0] ? trace_init_perf_perm_irq_work_exit+0x20/0x20 [ 152.924533][ C0] arch_call_rest_init+0x13/0x30 [ 152.929615][ C0] start_kernel+0x39e/0x480 [ 152.934176][ C0] x86_64_start_reservations+0x18/0x30 [ 152.939677][ C0] x86_64_start_kernel+0xb2/0xc0 [ 152.944644][ C0] secondary_startup_64_no_verify+0x166/0x16b [pid 5327] write(4, "-pids ", 6) = 6 [pid 5327] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [ 152.950747][ C0] [pid 5327] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5328 attached ) = 247 [pid 5327] ptrace(PTRACE_ATTACH, 247) = -1 EPERM (Operation not permitted) [pid 5327] close(3) = 0 [pid 5327] close(4) = 0 [pid 5327] close(5) = -1 EBADF (Bad file descriptor) [pid 5327] close(6) = -1 EBADF (Bad file descriptor) [pid 5327] close(7) = -1 EBADF (Bad file descriptor) [pid 5327] close(8) = -1 EBADF (Bad file descriptor) [pid 5327] close(9) = -1 EBADF (Bad file descriptor) [pid 5327] close(10) = -1 EBADF (Bad file descriptor) [pid 5327] close(11) = -1 EBADF (Bad file descriptor) [pid 5327] close(12) = -1 EBADF (Bad file descriptor) [pid 5327] close(13) = -1 EBADF (Bad file descriptor) [pid 5327] close(14) = -1 EBADF (Bad file descriptor) [pid 5327] close(15) = -1 EBADF (Bad file descriptor) [pid 5327] close(16) = -1 EBADF (Bad file descriptor) [pid 5327] close(17) = -1 EBADF (Bad file descriptor) [pid 5327] close(18) = -1 EBADF (Bad file descriptor) [pid 5327] close(19) = -1 EBADF (Bad file descriptor) [pid 5327] close(20) = -1 EBADF (Bad file descriptor) [pid 5327] close(21) = -1 EBADF (Bad file descriptor) [pid 5327] close(22) = -1 EBADF (Bad file descriptor) [pid 5327] close(23) = -1 EBADF (Bad file descriptor) [pid 5327] close(24) = -1 EBADF (Bad file descriptor) [pid 5327] close(25) = -1 EBADF (Bad file descriptor) [pid 5327] close(26) = -1 EBADF (Bad file descriptor) [pid 5327] close(27) = -1 EBADF (Bad file descriptor) [pid 5327] close(28) = -1 EBADF (Bad file descriptor) [pid 5327] close(29) = -1 EBADF (Bad file descriptor) [pid 5327] exit_group(0) = ? [pid 5327] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./122/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./122/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./122/cgroup.cpu") = 0 [pid 5064] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./122/binderfs") = 0 [pid 5064] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./122/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./122/file0") = 0 [pid 5064] umount2("./122/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./122/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./122/cgroup") = 0 [pid 5064] umount2("./122/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./122/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./122/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./122") = 0 [pid 5064] mkdir("./123", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 248 ./strace-static-x86_64: Process 5329 attached [pid 5329] set_robust_list(0x555555a8a660, 24) = 0 [pid 5329] chdir("./123") = 0 [pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5329] setpgid(0, 0) = 0 [pid 5329] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5329] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5329] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5329] write(3, "1000", 4) = 4 [pid 5329] close(3) = 0 [pid 5329] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5329] mkdir("./file0", 000) = 0 [pid 5329] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5329] open("./file0", O_RDONLY) = 3 [pid 5329] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5329] write(4, "-pids ", 6) = 6 [pid 5329] write(4, "\x2b\x70\x69\x64\x73\x00", 6 [pid 5328] exit(0) = ? [pid 5328] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=247, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5329] <... write resumed>) = 6 [pid 5329] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5330 attached ) = 249 [pid 5329] ptrace(PTRACE_ATTACH, 249) = -1 EPERM (Operation not permitted) [pid 5329] close(3) = 0 [pid 5329] close(4) = 0 [pid 5329] close(5) = -1 EBADF (Bad file descriptor) [pid 5329] close(6) = -1 EBADF (Bad file descriptor) [pid 5329] close(7) = -1 EBADF (Bad file descriptor) [pid 5329] close(8) = -1 EBADF (Bad file descriptor) [pid 5329] close(9) = -1 EBADF (Bad file descriptor) [pid 5329] close(10) = -1 EBADF (Bad file descriptor) [pid 5329] close(11) = -1 EBADF (Bad file descriptor) [pid 5329] close(12) = -1 EBADF (Bad file descriptor) [pid 5329] close(13) = -1 EBADF (Bad file descriptor) [pid 5329] close(14) = -1 EBADF (Bad file descriptor) [pid 5329] close(15) = -1 EBADF (Bad file descriptor) [pid 5329] close(16) = -1 EBADF (Bad file descriptor) [pid 5329] close(17) = -1 EBADF (Bad file descriptor) [pid 5329] close(18) = -1 EBADF (Bad file descriptor) [pid 5329] close(19) = -1 EBADF (Bad file descriptor) [pid 5329] close(20) = -1 EBADF (Bad file descriptor) [pid 5329] close(21) = -1 EBADF (Bad file descriptor) [pid 5329] close(22) = -1 EBADF (Bad file descriptor) [pid 5329] close(23) = -1 EBADF (Bad file descriptor) [pid 5329] close(24) = -1 EBADF (Bad file descriptor) [pid 5329] close(25) = -1 EBADF (Bad file descriptor) [pid 5329] close(26) = -1 EBADF (Bad file descriptor) [pid 5329] close(27) = -1 EBADF (Bad file descriptor) [pid 5329] close(28) = -1 EBADF (Bad file descriptor) [pid 5329] close(29) = -1 EBADF (Bad file descriptor) [pid 5329] exit_group(0) = ? [pid 5329] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=248, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./123/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./123/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./123/cgroup.cpu") = 0 [pid 5064] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./123/binderfs") = 0 [pid 5064] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./123/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./123/file0") = 0 [pid 5064] umount2("./123/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./123/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./123/cgroup") = 0 [pid 5064] umount2("./123/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./123/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./123/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./123") = 0 [pid 5064] mkdir("./124", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5331 attached [pid 5331] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 250 [pid 5330] exit(0 [pid 5331] <... set_robust_list resumed>) = 0 [pid 5331] chdir("./124" [pid 5330] <... exit resumed>) = ? [pid 5331] <... chdir resumed>) = 0 [pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5331] setpgid(0, 0) = 0 [pid 5330] +++ exited with 0 +++ [pid 5331] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5331] <... symlink resumed>) = 0 [pid 5331] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5331] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5331] write(3, "1000", 4) = 4 [pid 5331] close(3) = 0 [pid 5331] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5331] mkdir("./file0", 000) = 0 [pid 5331] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5331] open("./file0", O_RDONLY) = 3 [pid 5331] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5331] write(4, "-pids ", 6) = 6 [pid 5331] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5331] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5332 attached ) = 251 [pid 5331] ptrace(PTRACE_ATTACH, 251) = -1 EPERM (Operation not permitted) [pid 5331] close(3) = 0 [pid 5331] close(4) = 0 [pid 5331] close(5) = -1 EBADF (Bad file descriptor) [pid 5331] close(6) = -1 EBADF (Bad file descriptor) [pid 5331] close(7) = -1 EBADF (Bad file descriptor) [pid 5331] close(8) = -1 EBADF (Bad file descriptor) [pid 5331] close(9) = -1 EBADF (Bad file descriptor) [pid 5331] close(10) = -1 EBADF (Bad file descriptor) [pid 5331] close(11) = -1 EBADF (Bad file descriptor) [pid 5331] close(12) = -1 EBADF (Bad file descriptor) [pid 5331] close(13) = -1 EBADF (Bad file descriptor) [pid 5331] close(14) = -1 EBADF (Bad file descriptor) [pid 5331] close(15) = -1 EBADF (Bad file descriptor) [pid 5331] close(16) = -1 EBADF (Bad file descriptor) [pid 5331] close(17) = -1 EBADF (Bad file descriptor) [pid 5331] close(18) = -1 EBADF (Bad file descriptor) [pid 5331] close(19) = -1 EBADF (Bad file descriptor) [pid 5331] close(20) = -1 EBADF (Bad file descriptor) [pid 5331] close(21) = -1 EBADF (Bad file descriptor) [pid 5331] close(22) = -1 EBADF (Bad file descriptor) [pid 5331] close(23) = -1 EBADF (Bad file descriptor) [pid 5331] close(24) = -1 EBADF (Bad file descriptor) [pid 5331] close(25) = -1 EBADF (Bad file descriptor) [pid 5331] close(26) = -1 EBADF (Bad file descriptor) [pid 5331] close(27) = -1 EBADF (Bad file descriptor) [pid 5331] close(28) = -1 EBADF (Bad file descriptor) [pid 5331] close(29) = -1 EBADF (Bad file descriptor) [pid 5331] exit_group(0) = ? [pid 5331] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=250, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./124/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./124/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./124/cgroup.cpu") = 0 [pid 5064] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./124/binderfs") = 0 [pid 5064] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./124/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./124/file0") = 0 [pid 5064] umount2("./124/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./124/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./124/cgroup") = 0 [pid 5064] umount2("./124/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./124/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./124/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./124") = 0 [pid 5064] mkdir("./125", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5333 attached [pid 5333] set_robust_list(0x555555a8a660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 252 [pid 5333] <... set_robust_list resumed>) = 0 [pid 5333] chdir("./125") = 0 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5333] setpgid(0, 0) = 0 [pid 5333] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5333] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5333] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5333] write(3, "1000", 4) = 4 [pid 5333] close(3) = 0 [pid 5333] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5333] mkdir("./file0", 000) = 0 [pid 5333] mount(NULL, "./file0", "cgroup2", 0, NULL [pid 5332] exit(0) = ? [pid 5333] <... mount resumed>) = 0 [pid 5333] open("./file0", O_RDONLY) = 3 [pid 5333] openat(3, "cgroup.subtree_control", O_RDWR [pid 5332] +++ exited with 0 +++ [pid 5333] <... openat resumed>) = 4 [pid 5333] write(4, "-pids ", 6 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=251, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5333] <... write resumed>) = 6 [pid 5333] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5333] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5334 attached ) = 253 [pid 5333] ptrace(PTRACE_ATTACH, 253) = -1 EPERM (Operation not permitted) [pid 5333] close(3) = 0 [pid 5333] close(4) = 0 [pid 5333] close(5) = -1 EBADF (Bad file descriptor) [pid 5333] close(6) = -1 EBADF (Bad file descriptor) [pid 5333] close(7) = -1 EBADF (Bad file descriptor) [pid 5333] close(8) = -1 EBADF (Bad file descriptor) [pid 5333] close(9) = -1 EBADF (Bad file descriptor) [pid 5333] close(10) = -1 EBADF (Bad file descriptor) [pid 5333] close(11) = -1 EBADF (Bad file descriptor) [pid 5333] close(12) = -1 EBADF (Bad file descriptor) [pid 5333] close(13) = -1 EBADF (Bad file descriptor) [pid 5333] close(14) = -1 EBADF (Bad file descriptor) [pid 5333] close(15) = -1 EBADF (Bad file descriptor) [pid 5333] close(16) = -1 EBADF (Bad file descriptor) [pid 5333] close(17) = -1 EBADF (Bad file descriptor) [pid 5333] close(18) = -1 EBADF (Bad file descriptor) [pid 5333] close(19) = -1 EBADF (Bad file descriptor) [pid 5333] close(20) = -1 EBADF (Bad file descriptor) [pid 5333] close(21) = -1 EBADF (Bad file descriptor) [pid 5333] close(22) = -1 EBADF (Bad file descriptor) [pid 5333] close(23) = -1 EBADF (Bad file descriptor) [pid 5333] close(24) = -1 EBADF (Bad file descriptor) [pid 5333] close(25) = -1 EBADF (Bad file descriptor) [pid 5333] close(26) = -1 EBADF (Bad file descriptor) [pid 5333] close(27) = -1 EBADF (Bad file descriptor) [pid 5333] close(28) = -1 EBADF (Bad file descriptor) [pid 5333] close(29) = -1 EBADF (Bad file descriptor) [pid 5333] exit_group(0) = ? [pid 5333] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=252, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./125/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./125/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./125/cgroup.cpu") = 0 [pid 5064] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./125/binderfs") = 0 [pid 5064] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./125/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./125/file0") = 0 [pid 5064] umount2("./125/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./125/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./125/cgroup") = 0 [pid 5064] umount2("./125/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./125/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./125/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./125") = 0 [pid 5064] mkdir("./126", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5335 attached , child_tidptr=0x555555a8a650) = 254 [pid 5335] set_robust_list(0x555555a8a660, 24) = 0 [pid 5335] chdir("./126") = 0 [pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5335] setpgid(0, 0) = 0 [pid 5335] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5335] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5335] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5335] write(3, "1000", 4) = 4 [pid 5335] close(3) = 0 [pid 5335] symlink("/dev/binderfs", "./binderfs" [pid 5334] exit(0) = ? [pid 5335] <... symlink resumed>) = 0 [pid 5334] +++ exited with 0 +++ [pid 5335] mkdir("./file0", 000 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=253, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5335] <... mkdir resumed>) = 0 [pid 5335] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5335] open("./file0", O_RDONLY) = 3 [pid 5335] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5335] write(4, "-pids ", 6) = 6 [pid 5335] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5335] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5336 attached ) = 255 [pid 5335] ptrace(PTRACE_ATTACH, 255) = -1 EPERM (Operation not permitted) [pid 5335] close(3) = 0 [pid 5335] close(4) = 0 [pid 5335] close(5) = -1 EBADF (Bad file descriptor) [pid 5335] close(6) = -1 EBADF (Bad file descriptor) [pid 5335] close(7) = -1 EBADF (Bad file descriptor) [pid 5335] close(8) = -1 EBADF (Bad file descriptor) [pid 5335] close(9) = -1 EBADF (Bad file descriptor) [pid 5335] close(10) = -1 EBADF (Bad file descriptor) [pid 5335] close(11) = -1 EBADF (Bad file descriptor) [pid 5335] close(12) = -1 EBADF (Bad file descriptor) [pid 5335] close(13) = -1 EBADF (Bad file descriptor) [pid 5335] close(14) = -1 EBADF (Bad file descriptor) [pid 5335] close(15) = -1 EBADF (Bad file descriptor) [pid 5335] close(16) = -1 EBADF (Bad file descriptor) [pid 5335] close(17) = -1 EBADF (Bad file descriptor) [pid 5335] close(18) = -1 EBADF (Bad file descriptor) [pid 5335] close(19) = -1 EBADF (Bad file descriptor) [pid 5335] close(20) = -1 EBADF (Bad file descriptor) [pid 5335] close(21) = -1 EBADF (Bad file descriptor) [pid 5335] close(22) = -1 EBADF (Bad file descriptor) [pid 5335] close(23) = -1 EBADF (Bad file descriptor) [pid 5335] close(24) = -1 EBADF (Bad file descriptor) [pid 5335] close(25) = -1 EBADF (Bad file descriptor) [pid 5335] close(26) = -1 EBADF (Bad file descriptor) [pid 5335] close(27) = -1 EBADF (Bad file descriptor) [pid 5335] close(28) = -1 EBADF (Bad file descriptor) [pid 5335] close(29) = -1 EBADF (Bad file descriptor) [pid 5335] exit_group(0) = ? [pid 5335] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=254, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./126/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./126/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./126/cgroup.cpu") = 0 [pid 5064] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./126/binderfs") = 0 [pid 5064] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5336] exit(0) = ? [pid 5064] <... umount2 resumed>) = 0 [pid 5064] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./126/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5336] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./126/file0") = 0 [pid 5064] umount2("./126/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./126/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./126/cgroup") = 0 [pid 5064] umount2("./126/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./126/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./126/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./126") = 0 [pid 5064] mkdir("./127", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 256 ./strace-static-x86_64: Process 5337 attached [pid 5337] set_robust_list(0x555555a8a660, 24) = 0 [pid 5337] chdir("./127") = 0 [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5337] setpgid(0, 0) = 0 [pid 5337] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5337] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5337] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5337] write(3, "1000", 4) = 4 [pid 5337] close(3) = 0 [pid 5337] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5337] mkdir("./file0", 000) = 0 [pid 5337] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5337] open("./file0", O_RDONLY) = 3 [pid 5337] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5337] write(4, "-pids ", 6) = 6 [pid 5337] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5337] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5338 attached ) = 257 [pid 5337] ptrace(PTRACE_ATTACH, 257) = -1 EPERM (Operation not permitted) [pid 5337] close(3) = 0 [pid 5337] close(4) = 0 [pid 5337] close(5) = -1 EBADF (Bad file descriptor) [pid 5337] close(6) = -1 EBADF (Bad file descriptor) [pid 5337] close(7) = -1 EBADF (Bad file descriptor) [pid 5337] close(8) = -1 EBADF (Bad file descriptor) [pid 5337] close(9) = -1 EBADF (Bad file descriptor) [pid 5337] close(10) = -1 EBADF (Bad file descriptor) [pid 5337] close(11) = -1 EBADF (Bad file descriptor) [pid 5337] close(12) = -1 EBADF (Bad file descriptor) [pid 5337] close(13) = -1 EBADF (Bad file descriptor) [pid 5337] close(14) = -1 EBADF (Bad file descriptor) [pid 5337] close(15) = -1 EBADF (Bad file descriptor) [pid 5337] close(16) = -1 EBADF (Bad file descriptor) [pid 5337] close(17) = -1 EBADF (Bad file descriptor) [pid 5337] close(18) = -1 EBADF (Bad file descriptor) [pid 5337] close(19) = -1 EBADF (Bad file descriptor) [pid 5337] close(20) = -1 EBADF (Bad file descriptor) [pid 5337] close(21) = -1 EBADF (Bad file descriptor) [pid 5337] close(22) = -1 EBADF (Bad file descriptor) [pid 5337] close(23) = -1 EBADF (Bad file descriptor) [pid 5337] close(24) = -1 EBADF (Bad file descriptor) [pid 5337] close(25) = -1 EBADF (Bad file descriptor) [pid 5337] close(26) = -1 EBADF (Bad file descriptor) [pid 5337] close(27) = -1 EBADF (Bad file descriptor) [pid 5337] close(28) = -1 EBADF (Bad file descriptor) [pid 5337] close(29) = -1 EBADF (Bad file descriptor) [pid 5337] exit_group(0) = ? [pid 5337] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=256, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5338] exit(0 [pid 5064] getdents64(3, [pid 5338] <... exit resumed>) = ? [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./127/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./127/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5338] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=257, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./127/cgroup.cpu") = 0 [pid 5064] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./127/binderfs") = 0 [pid 5064] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./127/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./127/file0") = 0 [pid 5064] umount2("./127/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./127/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./127/cgroup") = 0 [pid 5064] umount2("./127/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./127/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./127/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./127") = 0 [pid 5064] mkdir("./128", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5339 attached [pid 5339] set_robust_list(0x555555a8a660, 24) = 0 [pid 5339] chdir("./128") = 0 [pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] <... clone resumed>, child_tidptr=0x555555a8a650) = 258 [pid 5339] setpgid(0, 0) = 0 [pid 5339] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5339] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5339] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5339] write(3, "1000", 4) = 4 [pid 5339] close(3) = 0 [pid 5339] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5339] mkdir("./file0", 000) = 0 [pid 5339] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5339] open("./file0", O_RDONLY) = 3 [pid 5339] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5339] write(4, "-pids ", 6) = 6 [pid 5339] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5339] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5340 attached ) = 259 [pid 5339] ptrace(PTRACE_ATTACH, 259) = -1 EPERM (Operation not permitted) [pid 5339] close(3) = 0 [pid 5339] close(4) = 0 [pid 5339] close(5) = -1 EBADF (Bad file descriptor) [pid 5339] close(6) = -1 EBADF (Bad file descriptor) [pid 5339] close(7) = -1 EBADF (Bad file descriptor) [pid 5339] close(8) = -1 EBADF (Bad file descriptor) [pid 5339] close(9) = -1 EBADF (Bad file descriptor) [pid 5339] close(10) = -1 EBADF (Bad file descriptor) [pid 5339] close(11) = -1 EBADF (Bad file descriptor) [pid 5339] close(12) = -1 EBADF (Bad file descriptor) [pid 5339] close(13) = -1 EBADF (Bad file descriptor) [pid 5339] close(14) = -1 EBADF (Bad file descriptor) [pid 5339] close(15) = -1 EBADF (Bad file descriptor) [pid 5339] close(16) = -1 EBADF (Bad file descriptor) [pid 5339] close(17) = -1 EBADF (Bad file descriptor) [pid 5339] close(18) = -1 EBADF (Bad file descriptor) [pid 5339] close(19) = -1 EBADF (Bad file descriptor) [pid 5339] close(20) = -1 EBADF (Bad file descriptor) [pid 5339] close(21) = -1 EBADF (Bad file descriptor) [pid 5339] close(22) = -1 EBADF (Bad file descriptor) [pid 5339] close(23) = -1 EBADF (Bad file descriptor) [pid 5339] close(24) = -1 EBADF (Bad file descriptor) [pid 5339] close(25) = -1 EBADF (Bad file descriptor) [pid 5339] close(26) = -1 EBADF (Bad file descriptor) [pid 5339] close(27) = -1 EBADF (Bad file descriptor) [pid 5339] close(28) = -1 EBADF (Bad file descriptor) [pid 5339] close(29) = -1 EBADF (Bad file descriptor) [pid 5339] exit_group(0) = ? [pid 5339] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5340] exit(0 [pid 5064] getdents64(3, [pid 5340] <... exit resumed>) = ? [pid 5064] <... getdents64 resumed>0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./128/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./128/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5340] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=259, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./128/cgroup.cpu") = 0 [pid 5064] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./128/binderfs") = 0 [pid 5064] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./128/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./128/file0") = 0 [pid 5064] umount2("./128/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./128/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./128/cgroup") = 0 [pid 5064] umount2("./128/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./128/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./128/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./128") = 0 [pid 5064] mkdir("./129", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 260 ./strace-static-x86_64: Process 5341 attached [pid 5341] set_robust_list(0x555555a8a660, 24) = 0 [pid 5341] chdir("./129") = 0 [pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5341] setpgid(0, 0) = 0 [pid 5341] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5341] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5341] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5341] write(3, "1000", 4) = 4 [pid 5341] close(3) = 0 [pid 5341] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5341] mkdir("./file0", 000) = 0 [pid 5341] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5341] open("./file0", O_RDONLY) = 3 [pid 5341] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5341] write(4, "-pids ", 6) = 6 [pid 5341] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5341] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5342 attached ) = 261 [pid 5341] ptrace(PTRACE_ATTACH, 261) = -1 EPERM (Operation not permitted) [pid 5341] close(3) = 0 [pid 5341] close(4) = 0 [pid 5341] close(5) = -1 EBADF (Bad file descriptor) [pid 5341] close(6) = -1 EBADF (Bad file descriptor) [pid 5341] close(7) = -1 EBADF (Bad file descriptor) [pid 5341] close(8) = -1 EBADF (Bad file descriptor) [pid 5341] close(9) = -1 EBADF (Bad file descriptor) [pid 5341] close(10) = -1 EBADF (Bad file descriptor) [pid 5341] close(11) = -1 EBADF (Bad file descriptor) [pid 5341] close(12) = -1 EBADF (Bad file descriptor) [pid 5341] close(13) = -1 EBADF (Bad file descriptor) [pid 5341] close(14) = -1 EBADF (Bad file descriptor) [pid 5341] close(15) = -1 EBADF (Bad file descriptor) [pid 5341] close(16) = -1 EBADF (Bad file descriptor) [pid 5341] close(17) = -1 EBADF (Bad file descriptor) [pid 5341] close(18) = -1 EBADF (Bad file descriptor) [pid 5341] close(19) = -1 EBADF (Bad file descriptor) [pid 5341] close(20) = -1 EBADF (Bad file descriptor) [pid 5341] close(21) = -1 EBADF (Bad file descriptor) [pid 5341] close(22) = -1 EBADF (Bad file descriptor) [pid 5341] close(23) = -1 EBADF (Bad file descriptor) [pid 5341] close(24) = -1 EBADF (Bad file descriptor) [pid 5341] close(25) = -1 EBADF (Bad file descriptor) [pid 5341] close(26) = -1 EBADF (Bad file descriptor) [pid 5341] close(27) = -1 EBADF (Bad file descriptor) [pid 5341] close(28) = -1 EBADF (Bad file descriptor) [pid 5341] close(29) = -1 EBADF (Bad file descriptor) [pid 5341] exit_group(0) = ? [pid 5341] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=260, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./129/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./129/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./129/cgroup.cpu") = 0 [pid 5064] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./129/binderfs") = 0 [pid 5064] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./129/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, [pid 5342] exit(0 [pid 5064] <... getdents64 resumed>0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5342] <... exit resumed>) = ? [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5342] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] rmdir("./129/file0") = 0 [pid 5064] umount2("./129/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./129/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./129/cgroup") = 0 [pid 5064] umount2("./129/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./129/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./129/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./129") = 0 [pid 5064] mkdir("./130", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 262 ./strace-static-x86_64: Process 5343 attached [pid 5343] set_robust_list(0x555555a8a660, 24) = 0 [pid 5343] chdir("./130") = 0 [pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5343] setpgid(0, 0) = 0 [pid 5343] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5343] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5343] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5343] write(3, "1000", 4) = 4 [pid 5343] close(3) = 0 [pid 5343] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5343] mkdir("./file0", 000) = 0 [pid 5343] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5343] open("./file0", O_RDONLY) = 3 [pid 5343] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5343] write(4, "-pids ", 6) = 6 [pid 5343] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5343] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5344 attached ) = 263 [pid 5343] ptrace(PTRACE_ATTACH, 263) = -1 EPERM (Operation not permitted) [pid 5343] close(3) = 0 [pid 5343] close(4) = 0 [pid 5343] close(5) = -1 EBADF (Bad file descriptor) [pid 5343] close(6) = -1 EBADF (Bad file descriptor) [pid 5343] close(7) = -1 EBADF (Bad file descriptor) [pid 5343] close(8) = -1 EBADF (Bad file descriptor) [pid 5343] close(9) = -1 EBADF (Bad file descriptor) [pid 5343] close(10) = -1 EBADF (Bad file descriptor) [pid 5343] close(11) = -1 EBADF (Bad file descriptor) [pid 5343] close(12) = -1 EBADF (Bad file descriptor) [pid 5343] close(13) = -1 EBADF (Bad file descriptor) [pid 5343] close(14) = -1 EBADF (Bad file descriptor) [pid 5343] close(15) = -1 EBADF (Bad file descriptor) [pid 5343] close(16) = -1 EBADF (Bad file descriptor) [pid 5343] close(17) = -1 EBADF (Bad file descriptor) [pid 5343] close(18) = -1 EBADF (Bad file descriptor) [pid 5343] close(19) = -1 EBADF (Bad file descriptor) [pid 5343] close(20) = -1 EBADF (Bad file descriptor) [pid 5343] close(21) = -1 EBADF (Bad file descriptor) [pid 5343] close(22) = -1 EBADF (Bad file descriptor) [pid 5343] close(23) = -1 EBADF (Bad file descriptor) [pid 5343] close(24) = -1 EBADF (Bad file descriptor) [pid 5343] close(25) = -1 EBADF (Bad file descriptor) [pid 5343] close(26) = -1 EBADF (Bad file descriptor) [pid 5343] close(27) = -1 EBADF (Bad file descriptor) [pid 5343] close(28) = -1 EBADF (Bad file descriptor) [pid 5343] close(29) = -1 EBADF (Bad file descriptor) [pid 5343] exit_group(0) = ? [pid 5343] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=262, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./130/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./130/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./130/cgroup.cpu") = 0 [pid 5064] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5344] exit(0 [pid 5064] unlink("./130/binderfs" [pid 5344] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5344] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=263, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./130/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./130/file0") = 0 [pid 5064] umount2("./130/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./130/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./130/cgroup") = 0 [pid 5064] umount2("./130/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./130/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./130/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./130") = 0 [pid 5064] mkdir("./131", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 264 ./strace-static-x86_64: Process 5345 attached [pid 5345] set_robust_list(0x555555a8a660, 24) = 0 [pid 5345] chdir("./131") = 0 [pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5345] setpgid(0, 0) = 0 [pid 5345] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5345] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5345] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5345] write(3, "1000", 4) = 4 [pid 5345] close(3) = 0 [pid 5345] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5345] mkdir("./file0", 000) = 0 [pid 5345] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5345] open("./file0", O_RDONLY) = 3 [pid 5345] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5345] write(4, "-pids ", 6) = 6 [pid 5345] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5345] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5346 attached ) = 265 [pid 5345] ptrace(PTRACE_ATTACH, 265) = -1 EPERM (Operation not permitted) [pid 5345] close(3) = 0 [pid 5345] close(4) = 0 [pid 5345] close(5) = -1 EBADF (Bad file descriptor) [pid 5345] close(6) = -1 EBADF (Bad file descriptor) [pid 5345] close(7) = -1 EBADF (Bad file descriptor) [pid 5345] close(8) = -1 EBADF (Bad file descriptor) [pid 5345] close(9) = -1 EBADF (Bad file descriptor) [pid 5345] close(10) = -1 EBADF (Bad file descriptor) [pid 5345] close(11) = -1 EBADF (Bad file descriptor) [pid 5345] close(12) = -1 EBADF (Bad file descriptor) [pid 5345] close(13) = -1 EBADF (Bad file descriptor) [pid 5345] close(14) = -1 EBADF (Bad file descriptor) [pid 5345] close(15) = -1 EBADF (Bad file descriptor) [pid 5345] close(16) = -1 EBADF (Bad file descriptor) [pid 5345] close(17) = -1 EBADF (Bad file descriptor) [pid 5345] close(18) = -1 EBADF (Bad file descriptor) [pid 5345] close(19) = -1 EBADF (Bad file descriptor) [pid 5345] close(20) = -1 EBADF (Bad file descriptor) [pid 5345] close(21) = -1 EBADF (Bad file descriptor) [pid 5345] close(22) = -1 EBADF (Bad file descriptor) [pid 5345] close(23) = -1 EBADF (Bad file descriptor) [pid 5345] close(24) = -1 EBADF (Bad file descriptor) [pid 5345] close(25) = -1 EBADF (Bad file descriptor) [pid 5345] close(26) = -1 EBADF (Bad file descriptor) [pid 5345] close(27) = -1 EBADF (Bad file descriptor) [pid 5345] close(28) = -1 EBADF (Bad file descriptor) [pid 5345] close(29) = -1 EBADF (Bad file descriptor) [pid 5345] exit_group(0) = ? [pid 5345] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=264, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./131/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./131/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./131/cgroup.cpu" [pid 5346] exit(0) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5346] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=265, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./131/binderfs") = 0 [pid 5064] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./131/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./131/file0") = 0 [pid 5064] umount2("./131/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./131/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./131/cgroup") = 0 [pid 5064] umount2("./131/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./131/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./131/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./131") = 0 [pid 5064] mkdir("./132", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5347 attached , child_tidptr=0x555555a8a650) = 266 [pid 5347] set_robust_list(0x555555a8a660, 24) = 0 [pid 5347] chdir("./132") = 0 [pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5347] setpgid(0, 0) = 0 [pid 5347] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5347] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5347] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5347] write(3, "1000", 4) = 4 [pid 5347] close(3) = 0 [pid 5347] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5347] mkdir("./file0", 000) = 0 [pid 5347] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5347] open("./file0", O_RDONLY) = 3 [pid 5347] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5347] write(4, "-pids ", 6) = 6 [pid 5347] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5347] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5348 attached ) = 267 [pid 5347] ptrace(PTRACE_ATTACH, 267) = -1 EPERM (Operation not permitted) [pid 5347] close(3) = 0 [pid 5347] close(4) = 0 [pid 5347] close(5) = -1 EBADF (Bad file descriptor) [pid 5347] close(6) = -1 EBADF (Bad file descriptor) [pid 5347] close(7) = -1 EBADF (Bad file descriptor) [pid 5347] close(8) = -1 EBADF (Bad file descriptor) [pid 5347] close(9) = -1 EBADF (Bad file descriptor) [pid 5347] close(10) = -1 EBADF (Bad file descriptor) [pid 5347] close(11) = -1 EBADF (Bad file descriptor) [pid 5347] close(12) = -1 EBADF (Bad file descriptor) [pid 5347] close(13) = -1 EBADF (Bad file descriptor) [pid 5347] close(14) = -1 EBADF (Bad file descriptor) [pid 5347] close(15) = -1 EBADF (Bad file descriptor) [pid 5347] close(16) = -1 EBADF (Bad file descriptor) [pid 5347] close(17) = -1 EBADF (Bad file descriptor) [pid 5347] close(18) = -1 EBADF (Bad file descriptor) [pid 5347] close(19) = -1 EBADF (Bad file descriptor) [pid 5347] close(20) = -1 EBADF (Bad file descriptor) [pid 5347] close(21) = -1 EBADF (Bad file descriptor) [pid 5347] close(22) = -1 EBADF (Bad file descriptor) [pid 5347] close(23) = -1 EBADF (Bad file descriptor) [pid 5347] close(24) = -1 EBADF (Bad file descriptor) [pid 5347] close(25) = -1 EBADF (Bad file descriptor) [pid 5347] close(26) = -1 EBADF (Bad file descriptor) [pid 5347] close(27) = -1 EBADF (Bad file descriptor) [pid 5347] close(28) = -1 EBADF (Bad file descriptor) [pid 5347] close(29) = -1 EBADF (Bad file descriptor) [pid 5347] exit_group(0) = ? [pid 5347] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=266, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5064] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./132/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./132/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./132/cgroup.cpu") = 0 [pid 5064] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./132/binderfs" [pid 5348] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5348] <... exit resumed>) = ? [pid 5064] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5348] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./132/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./132/file0") = 0 [pid 5064] umount2("./132/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./132/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./132/cgroup") = 0 [pid 5064] umount2("./132/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./132/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./132/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./132") = 0 [pid 5064] mkdir("./133", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5349 attached , child_tidptr=0x555555a8a650) = 268 [pid 5349] set_robust_list(0x555555a8a660, 24) = 0 [pid 5349] chdir("./133") = 0 [pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5349] setpgid(0, 0) = 0 [pid 5349] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5349] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5349] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5349] write(3, "1000", 4) = 4 [pid 5349] close(3) = 0 [pid 5349] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5349] mkdir("./file0", 000) = 0 [pid 5349] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5349] open("./file0", O_RDONLY) = 3 [pid 5349] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5349] write(4, "-pids ", 6) = 6 [pid 5349] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5349] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5350 attached ) = 269 [pid 5349] ptrace(PTRACE_ATTACH, 269) = -1 EPERM (Operation not permitted) [pid 5349] close(3) = 0 [pid 5349] close(4) = 0 [pid 5349] close(5) = -1 EBADF (Bad file descriptor) [pid 5349] close(6) = -1 EBADF (Bad file descriptor) [pid 5349] close(7) = -1 EBADF (Bad file descriptor) [pid 5349] close(8) = -1 EBADF (Bad file descriptor) [pid 5349] close(9) = -1 EBADF (Bad file descriptor) [pid 5349] close(10) = -1 EBADF (Bad file descriptor) [pid 5349] close(11) = -1 EBADF (Bad file descriptor) [pid 5349] close(12) = -1 EBADF (Bad file descriptor) [pid 5349] close(13) = -1 EBADF (Bad file descriptor) [pid 5349] close(14) = -1 EBADF (Bad file descriptor) [pid 5349] close(15) = -1 EBADF (Bad file descriptor) [pid 5349] close(16) = -1 EBADF (Bad file descriptor) [pid 5349] close(17) = -1 EBADF (Bad file descriptor) [pid 5349] close(18) = -1 EBADF (Bad file descriptor) [pid 5349] close(19) = -1 EBADF (Bad file descriptor) [pid 5349] close(20) = -1 EBADF (Bad file descriptor) [pid 5349] close(21) = -1 EBADF (Bad file descriptor) [pid 5349] close(22) = -1 EBADF (Bad file descriptor) [pid 5349] close(23) = -1 EBADF (Bad file descriptor) [pid 5349] close(24) = -1 EBADF (Bad file descriptor) [pid 5349] close(25) = -1 EBADF (Bad file descriptor) [pid 5349] close(26) = -1 EBADF (Bad file descriptor) [pid 5349] close(27) = -1 EBADF (Bad file descriptor) [pid 5349] close(28) = -1 EBADF (Bad file descriptor) [pid 5349] close(29) = -1 EBADF (Bad file descriptor) [pid 5349] exit_group(0) = ? [pid 5349] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=268, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./133/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./133/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./133/cgroup.cpu") = 0 [pid 5064] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5350] exit(0 [pid 5064] unlink("./133/binderfs" [pid 5350] <... exit resumed>) = ? [pid 5064] <... unlink resumed>) = 0 [pid 5064] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5350] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./133/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=269, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./133/file0") = 0 [pid 5064] umount2("./133/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./133/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./133/cgroup") = 0 [pid 5064] umount2("./133/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./133/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./133/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./133") = 0 [pid 5064] mkdir("./134", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 270 ./strace-static-x86_64: Process 5351 attached [pid 5351] set_robust_list(0x555555a8a660, 24) = 0 [pid 5351] chdir("./134") = 0 [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5351] setpgid(0, 0) = 0 [pid 5351] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5351] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5351] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5351] write(3, "1000", 4) = 4 [pid 5351] close(3) = 0 [pid 5351] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5351] mkdir("./file0", 000) = 0 [pid 5351] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5351] open("./file0", O_RDONLY) = 3 [pid 5351] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5351] write(4, "-pids ", 6) = 6 [pid 5351] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5351] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5352 attached ) = 271 [pid 5351] ptrace(PTRACE_ATTACH, 271) = -1 EPERM (Operation not permitted) [pid 5351] close(3) = 0 [pid 5351] close(4) = 0 [pid 5351] close(5) = -1 EBADF (Bad file descriptor) [pid 5351] close(6) = -1 EBADF (Bad file descriptor) [pid 5351] close(7) = -1 EBADF (Bad file descriptor) [pid 5351] close(8) = -1 EBADF (Bad file descriptor) [pid 5351] close(9) = -1 EBADF (Bad file descriptor) [pid 5351] close(10) = -1 EBADF (Bad file descriptor) [pid 5351] close(11) = -1 EBADF (Bad file descriptor) [pid 5351] close(12) = -1 EBADF (Bad file descriptor) [pid 5351] close(13) = -1 EBADF (Bad file descriptor) [pid 5351] close(14) = -1 EBADF (Bad file descriptor) [pid 5351] close(15) = -1 EBADF (Bad file descriptor) [pid 5351] close(16) = -1 EBADF (Bad file descriptor) [pid 5351] close(17) = -1 EBADF (Bad file descriptor) [pid 5351] close(18) = -1 EBADF (Bad file descriptor) [pid 5351] close(19) = -1 EBADF (Bad file descriptor) [pid 5351] close(20) = -1 EBADF (Bad file descriptor) [pid 5351] close(21) = -1 EBADF (Bad file descriptor) [pid 5351] close(22) = -1 EBADF (Bad file descriptor) [pid 5351] close(23) = -1 EBADF (Bad file descriptor) [pid 5351] close(24) = -1 EBADF (Bad file descriptor) [pid 5351] close(25) = -1 EBADF (Bad file descriptor) [pid 5351] close(26) = -1 EBADF (Bad file descriptor) [pid 5351] close(27) = -1 EBADF (Bad file descriptor) [pid 5351] close(28) = -1 EBADF (Bad file descriptor) [pid 5351] close(29) = -1 EBADF (Bad file descriptor) [pid 5351] exit_group(0) = ? [pid 5351] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=270, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./134/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./134/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./134/cgroup.cpu") = 0 [pid 5064] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./134/binderfs" [pid 5352] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5352] <... exit resumed>) = ? [pid 5064] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5352] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./134/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=271, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./134/file0") = 0 [pid 5064] umount2("./134/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./134/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./134/cgroup") = 0 [pid 5064] umount2("./134/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./134/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./134/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./134") = 0 [pid 5064] mkdir("./135", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 272 ./strace-static-x86_64: Process 5353 attached [pid 5353] set_robust_list(0x555555a8a660, 24) = 0 [pid 5353] chdir("./135") = 0 [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5353] setpgid(0, 0) = 0 [pid 5353] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5353] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5353] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5353] write(3, "1000", 4) = 4 [pid 5353] close(3) = 0 [pid 5353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5353] mkdir("./file0", 000) = 0 [pid 5353] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5353] open("./file0", O_RDONLY) = 3 [pid 5353] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5353] write(4, "-pids ", 6) = 6 [pid 5353] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5353] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5354 attached ) = 273 [pid 5353] ptrace(PTRACE_ATTACH, 273) = -1 EPERM (Operation not permitted) [pid 5353] close(3) = 0 [pid 5353] close(4) = 0 [pid 5353] close(5) = -1 EBADF (Bad file descriptor) [pid 5353] close(6) = -1 EBADF (Bad file descriptor) [pid 5353] close(7) = -1 EBADF (Bad file descriptor) [pid 5353] close(8) = -1 EBADF (Bad file descriptor) [pid 5353] close(9) = -1 EBADF (Bad file descriptor) [pid 5353] close(10) = -1 EBADF (Bad file descriptor) [pid 5353] close(11) = -1 EBADF (Bad file descriptor) [pid 5353] close(12) = -1 EBADF (Bad file descriptor) [pid 5353] close(13) = -1 EBADF (Bad file descriptor) [pid 5353] close(14) = -1 EBADF (Bad file descriptor) [pid 5353] close(15) = -1 EBADF (Bad file descriptor) [pid 5353] close(16) = -1 EBADF (Bad file descriptor) [pid 5353] close(17) = -1 EBADF (Bad file descriptor) [pid 5353] close(18) = -1 EBADF (Bad file descriptor) [pid 5353] close(19) = -1 EBADF (Bad file descriptor) [pid 5353] close(20) = -1 EBADF (Bad file descriptor) [pid 5353] close(21) = -1 EBADF (Bad file descriptor) [pid 5353] close(22) = -1 EBADF (Bad file descriptor) [pid 5353] close(23) = -1 EBADF (Bad file descriptor) [pid 5353] close(24) = -1 EBADF (Bad file descriptor) [pid 5353] close(25) = -1 EBADF (Bad file descriptor) [pid 5353] close(26) = -1 EBADF (Bad file descriptor) [pid 5353] close(27) = -1 EBADF (Bad file descriptor) [pid 5353] close(28) = -1 EBADF (Bad file descriptor) [pid 5353] close(29) = -1 EBADF (Bad file descriptor) [pid 5353] exit_group(0) = ? [pid 5353] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=272, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./135/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./135/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./135/cgroup.cpu") = 0 [pid 5064] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./135/binderfs") = 0 [pid 5064] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./135/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5354] exit(0 [pid 5064] <... openat resumed>) = 4 [pid 5354] <... exit resumed>) = ? [pid 5064] newfstatat(4, "", [pid 5354] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=273, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./135/file0") = 0 [pid 5064] umount2("./135/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./135/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./135/cgroup") = 0 [pid 5064] umount2("./135/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./135/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./135/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./135") = 0 [pid 5064] mkdir("./136", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5355 attached , child_tidptr=0x555555a8a650) = 274 [pid 5355] set_robust_list(0x555555a8a660, 24) = 0 [pid 5355] chdir("./136") = 0 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5355] setpgid(0, 0) = 0 [pid 5355] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5355] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5355] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5355] write(3, "1000", 4) = 4 [pid 5355] close(3) = 0 [pid 5355] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5355] mkdir("./file0", 000) = 0 [pid 5355] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5355] open("./file0", O_RDONLY) = 3 [pid 5355] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5355] write(4, "-pids ", 6) = 6 [pid 5355] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5355] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5356 attached ) = 275 [pid 5355] ptrace(PTRACE_ATTACH, 275) = -1 EPERM (Operation not permitted) [pid 5355] close(3) = 0 [pid 5355] close(4) = 0 [pid 5355] close(5) = -1 EBADF (Bad file descriptor) [pid 5355] close(6) = -1 EBADF (Bad file descriptor) [pid 5355] close(7) = -1 EBADF (Bad file descriptor) [pid 5355] close(8) = -1 EBADF (Bad file descriptor) [pid 5355] close(9) = -1 EBADF (Bad file descriptor) [pid 5355] close(10) = -1 EBADF (Bad file descriptor) [pid 5355] close(11) = -1 EBADF (Bad file descriptor) [pid 5355] close(12) = -1 EBADF (Bad file descriptor) [pid 5355] close(13) = -1 EBADF (Bad file descriptor) [pid 5355] close(14) = -1 EBADF (Bad file descriptor) [pid 5355] close(15) = -1 EBADF (Bad file descriptor) [pid 5355] close(16) = -1 EBADF (Bad file descriptor) [pid 5355] close(17) = -1 EBADF (Bad file descriptor) [pid 5355] close(18) = -1 EBADF (Bad file descriptor) [pid 5355] close(19) = -1 EBADF (Bad file descriptor) [pid 5355] close(20) = -1 EBADF (Bad file descriptor) [pid 5355] close(21) = -1 EBADF (Bad file descriptor) [pid 5355] close(22) = -1 EBADF (Bad file descriptor) [pid 5355] close(23) = -1 EBADF (Bad file descriptor) [pid 5355] close(24) = -1 EBADF (Bad file descriptor) [pid 5355] close(25) = -1 EBADF (Bad file descriptor) [pid 5355] close(26) = -1 EBADF (Bad file descriptor) [pid 5355] close(27) = -1 EBADF (Bad file descriptor) [pid 5355] close(28) = -1 EBADF (Bad file descriptor) [pid 5355] close(29) = -1 EBADF (Bad file descriptor) [pid 5355] exit_group(0) = ? [pid 5355] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=274, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5356] exit(0 [pid 5064] <... openat resumed>) = 3 [pid 5356] <... exit resumed>) = ? [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5356] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=275, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./136/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./136/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./136/cgroup.cpu") = 0 [pid 5064] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./136/binderfs") = 0 [pid 5064] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./136/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./136/file0") = 0 [pid 5064] umount2("./136/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./136/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./136/cgroup") = 0 [pid 5064] umount2("./136/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./136/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./136/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./136") = 0 [pid 5064] mkdir("./137", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5357 attached , child_tidptr=0x555555a8a650) = 276 [pid 5357] set_robust_list(0x555555a8a660, 24) = 0 [pid 5357] chdir("./137") = 0 [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5357] setpgid(0, 0) = 0 [pid 5357] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5357] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5357] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5357] write(3, "1000", 4) = 4 [pid 5357] close(3) = 0 [pid 5357] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5357] mkdir("./file0", 000) = 0 [pid 5357] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5357] open("./file0", O_RDONLY) = 3 [pid 5357] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5357] write(4, "-pids ", 6) = 6 [pid 5357] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5357] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5358 attached ) = 277 [pid 5357] ptrace(PTRACE_ATTACH, 277) = -1 EPERM (Operation not permitted) [pid 5357] close(3) = 0 [pid 5357] close(4) = 0 [pid 5357] close(5) = -1 EBADF (Bad file descriptor) [pid 5357] close(6) = -1 EBADF (Bad file descriptor) [pid 5357] close(7) = -1 EBADF (Bad file descriptor) [pid 5357] close(8) = -1 EBADF (Bad file descriptor) [pid 5357] close(9) = -1 EBADF (Bad file descriptor) [pid 5357] close(10) = -1 EBADF (Bad file descriptor) [pid 5357] close(11) = -1 EBADF (Bad file descriptor) [pid 5357] close(12) = -1 EBADF (Bad file descriptor) [pid 5357] close(13) = -1 EBADF (Bad file descriptor) [pid 5357] close(14) = -1 EBADF (Bad file descriptor) [pid 5357] close(15) = -1 EBADF (Bad file descriptor) [pid 5357] close(16) = -1 EBADF (Bad file descriptor) [pid 5357] close(17) = -1 EBADF (Bad file descriptor) [pid 5357] close(18) = -1 EBADF (Bad file descriptor) [pid 5357] close(19) = -1 EBADF (Bad file descriptor) [pid 5357] close(20) = -1 EBADF (Bad file descriptor) [pid 5357] close(21) = -1 EBADF (Bad file descriptor) [pid 5357] close(22) = -1 EBADF (Bad file descriptor) [pid 5357] close(23) = -1 EBADF (Bad file descriptor) [pid 5357] close(24) = -1 EBADF (Bad file descriptor) [pid 5357] close(25) = -1 EBADF (Bad file descriptor) [pid 5357] close(26) = -1 EBADF (Bad file descriptor) [pid 5357] close(27) = -1 EBADF (Bad file descriptor) [pid 5357] close(28) = -1 EBADF (Bad file descriptor) [pid 5357] close(29) = -1 EBADF (Bad file descriptor) [pid 5357] exit_group(0) = ? [pid 5357] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=276, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./137/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5358] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5358] <... exit resumed>) = ? [pid 5064] newfstatat(AT_FDCWD, "./137/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./137/cgroup.cpu" [pid 5358] +++ exited with 0 +++ [pid 5064] <... unlink resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=277, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./137/binderfs") = 0 [pid 5064] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./137/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./137/file0") = 0 [pid 5064] umount2("./137/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./137/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./137/cgroup") = 0 [pid 5064] umount2("./137/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./137/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./137/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./137") = 0 [pid 5064] mkdir("./138", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5359 attached , child_tidptr=0x555555a8a650) = 278 [pid 5359] set_robust_list(0x555555a8a660, 24) = 0 [pid 5359] chdir("./138") = 0 [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5359] setpgid(0, 0) = 0 [pid 5359] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5359] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5359] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5359] write(3, "1000", 4) = 4 [pid 5359] close(3) = 0 [pid 5359] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5359] mkdir("./file0", 000) = 0 [pid 5359] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5359] open("./file0", O_RDONLY) = 3 [pid 5359] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5359] write(4, "-pids ", 6) = 6 [pid 5359] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5359] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5360 attached ) = 279 [pid 5359] ptrace(PTRACE_ATTACH, 279) = -1 EPERM (Operation not permitted) [pid 5359] close(3) = 0 [pid 5359] close(4) = 0 [pid 5359] close(5) = -1 EBADF (Bad file descriptor) [pid 5359] close(6) = -1 EBADF (Bad file descriptor) [pid 5359] close(7) = -1 EBADF (Bad file descriptor) [pid 5359] close(8) = -1 EBADF (Bad file descriptor) [pid 5359] close(9) = -1 EBADF (Bad file descriptor) [pid 5359] close(10) = -1 EBADF (Bad file descriptor) [pid 5359] close(11) = -1 EBADF (Bad file descriptor) [pid 5359] close(12) = -1 EBADF (Bad file descriptor) [pid 5359] close(13) = -1 EBADF (Bad file descriptor) [pid 5359] close(14) = -1 EBADF (Bad file descriptor) [pid 5359] close(15) = -1 EBADF (Bad file descriptor) [pid 5359] close(16) = -1 EBADF (Bad file descriptor) [pid 5359] close(17) = -1 EBADF (Bad file descriptor) [pid 5359] close(18) = -1 EBADF (Bad file descriptor) [pid 5359] close(19) = -1 EBADF (Bad file descriptor) [pid 5359] close(20) = -1 EBADF (Bad file descriptor) [pid 5359] close(21) = -1 EBADF (Bad file descriptor) [pid 5359] close(22) = -1 EBADF (Bad file descriptor) [pid 5359] close(23) = -1 EBADF (Bad file descriptor) [pid 5359] close(24) = -1 EBADF (Bad file descriptor) [pid 5359] close(25) = -1 EBADF (Bad file descriptor) [pid 5359] close(26) = -1 EBADF (Bad file descriptor) [pid 5359] close(27) = -1 EBADF (Bad file descriptor) [pid 5359] close(28) = -1 EBADF (Bad file descriptor) [pid 5359] close(29) = -1 EBADF (Bad file descriptor) [pid 5359] exit_group(0) = ? [pid 5359] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=278, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./138/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./138/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./138/cgroup.cpu" [pid 5360] exit(0 [pid 5064] <... unlink resumed>) = 0 [pid 5360] <... exit resumed>) = ? [pid 5064] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5360] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./138/binderfs") = 0 [pid 5064] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./138/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./138/file0") = 0 [pid 5064] umount2("./138/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./138/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./138/cgroup") = 0 [pid 5064] umount2("./138/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./138/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./138/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./138") = 0 [pid 5064] mkdir("./139", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5361 attached , child_tidptr=0x555555a8a650) = 280 [pid 5361] set_robust_list(0x555555a8a660, 24) = 0 [pid 5361] chdir("./139") = 0 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5361] setpgid(0, 0) = 0 [pid 5361] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5361] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5361] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5361] write(3, "1000", 4) = 4 [pid 5361] close(3) = 0 [pid 5361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5361] mkdir("./file0", 000) = 0 [pid 5361] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5361] open("./file0", O_RDONLY) = 3 [pid 5361] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5361] write(4, "-pids ", 6) = 6 [pid 5361] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5361] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5362 attached ) = 281 [pid 5361] ptrace(PTRACE_ATTACH, 281) = -1 EPERM (Operation not permitted) [pid 5361] close(3) = 0 [pid 5361] close(4) = 0 [pid 5361] close(5) = -1 EBADF (Bad file descriptor) [pid 5361] close(6) = -1 EBADF (Bad file descriptor) [pid 5361] close(7) = -1 EBADF (Bad file descriptor) [pid 5361] close(8) = -1 EBADF (Bad file descriptor) [pid 5361] close(9) = -1 EBADF (Bad file descriptor) [pid 5361] close(10) = -1 EBADF (Bad file descriptor) [pid 5361] close(11) = -1 EBADF (Bad file descriptor) [pid 5361] close(12) = -1 EBADF (Bad file descriptor) [pid 5361] close(13) = -1 EBADF (Bad file descriptor) [pid 5361] close(14) = -1 EBADF (Bad file descriptor) [pid 5361] close(15) = -1 EBADF (Bad file descriptor) [pid 5361] close(16) = -1 EBADF (Bad file descriptor) [pid 5361] close(17) = -1 EBADF (Bad file descriptor) [pid 5361] close(18) = -1 EBADF (Bad file descriptor) [pid 5361] close(19) = -1 EBADF (Bad file descriptor) [pid 5361] close(20) = -1 EBADF (Bad file descriptor) [pid 5361] close(21) = -1 EBADF (Bad file descriptor) [pid 5361] close(22) = -1 EBADF (Bad file descriptor) [pid 5361] close(23) = -1 EBADF (Bad file descriptor) [pid 5361] close(24) = -1 EBADF (Bad file descriptor) [pid 5361] close(25) = -1 EBADF (Bad file descriptor) [pid 5361] close(26) = -1 EBADF (Bad file descriptor) [pid 5361] close(27) = -1 EBADF (Bad file descriptor) [pid 5361] close(28) = -1 EBADF (Bad file descriptor) [pid 5361] close(29) = -1 EBADF (Bad file descriptor) [pid 5361] exit_group(0) = ? [pid 5361] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=280, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5362] exit(0 [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", [pid 5362] <... exit resumed>) = ? [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./139/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5362] +++ exited with 0 +++ [pid 5064] newfstatat(AT_FDCWD, "./139/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=281, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] unlink("./139/cgroup.cpu") = 0 [pid 5064] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./139/binderfs") = 0 [pid 5064] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./139/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./139/file0") = 0 [pid 5064] umount2("./139/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./139/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./139/cgroup") = 0 [pid 5064] umount2("./139/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./139/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./139/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./139") = 0 [pid 5064] mkdir("./140", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5363 attached , child_tidptr=0x555555a8a650) = 282 [pid 5363] set_robust_list(0x555555a8a660, 24) = 0 [pid 5363] chdir("./140") = 0 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5363] setpgid(0, 0) = 0 [pid 5363] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5363] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5363] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5363] write(3, "1000", 4) = 4 [pid 5363] close(3) = 0 [pid 5363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5363] mkdir("./file0", 000) = 0 [pid 5363] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5363] open("./file0", O_RDONLY) = 3 [pid 5363] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5363] write(4, "-pids ", 6) = 6 [pid 5363] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5363] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5364 attached ) = 283 [pid 5363] ptrace(PTRACE_ATTACH, 283) = -1 EPERM (Operation not permitted) [pid 5363] close(3) = 0 [pid 5363] close(4) = 0 [pid 5363] close(5) = -1 EBADF (Bad file descriptor) [pid 5363] close(6) = -1 EBADF (Bad file descriptor) [pid 5363] close(7) = -1 EBADF (Bad file descriptor) [pid 5363] close(8) = -1 EBADF (Bad file descriptor) [pid 5363] close(9) = -1 EBADF (Bad file descriptor) [pid 5363] close(10) = -1 EBADF (Bad file descriptor) [pid 5363] close(11) = -1 EBADF (Bad file descriptor) [pid 5363] close(12) = -1 EBADF (Bad file descriptor) [pid 5363] close(13) = -1 EBADF (Bad file descriptor) [pid 5363] close(14) = -1 EBADF (Bad file descriptor) [pid 5363] close(15) = -1 EBADF (Bad file descriptor) [pid 5363] close(16) = -1 EBADF (Bad file descriptor) [pid 5363] close(17) = -1 EBADF (Bad file descriptor) [pid 5363] close(18) = -1 EBADF (Bad file descriptor) [pid 5363] close(19) = -1 EBADF (Bad file descriptor) [pid 5363] close(20) = -1 EBADF (Bad file descriptor) [pid 5363] close(21) = -1 EBADF (Bad file descriptor) [pid 5363] close(22) = -1 EBADF (Bad file descriptor) [pid 5363] close(23) = -1 EBADF (Bad file descriptor) [pid 5363] close(24) = -1 EBADF (Bad file descriptor) [pid 5363] close(25) = -1 EBADF (Bad file descriptor) [pid 5363] close(26) = -1 EBADF (Bad file descriptor) [pid 5363] close(27) = -1 EBADF (Bad file descriptor) [pid 5363] close(28) = -1 EBADF (Bad file descriptor) [pid 5363] close(29) = -1 EBADF (Bad file descriptor) [pid 5363] exit_group(0 [pid 5364] exit(0 [pid 5363] <... exit_group resumed>) = ? [pid 5364] <... exit resumed>) = ? [pid 5363] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=282, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5364] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=283, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./140/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./140/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./140/cgroup.cpu") = 0 [pid 5064] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./140/binderfs") = 0 [pid 5064] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./140/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./140/file0") = 0 [pid 5064] umount2("./140/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./140/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./140/cgroup") = 0 [pid 5064] umount2("./140/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./140/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./140/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./140") = 0 [pid 5064] mkdir("./141", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 284 ./strace-static-x86_64: Process 5365 attached [pid 5365] set_robust_list(0x555555a8a660, 24) = 0 [pid 5365] chdir("./141") = 0 [pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5365] setpgid(0, 0) = 0 [pid 5365] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5365] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5365] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5365] write(3, "1000", 4) = 4 [pid 5365] close(3) = 0 [pid 5365] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5365] mkdir("./file0", 000) = 0 [pid 5365] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5365] open("./file0", O_RDONLY) = 3 [pid 5365] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5365] write(4, "-pids ", 6) = 6 [pid 5365] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5365] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5366 attached ) = 285 [pid 5365] ptrace(PTRACE_ATTACH, 285) = -1 EPERM (Operation not permitted) [pid 5365] close(3) = 0 [pid 5365] close(4) = 0 [pid 5365] close(5) = -1 EBADF (Bad file descriptor) [pid 5365] close(6) = -1 EBADF (Bad file descriptor) [pid 5365] close(7) = -1 EBADF (Bad file descriptor) [pid 5365] close(8) = -1 EBADF (Bad file descriptor) [pid 5365] close(9) = -1 EBADF (Bad file descriptor) [pid 5365] close(10) = -1 EBADF (Bad file descriptor) [pid 5365] close(11) = -1 EBADF (Bad file descriptor) [pid 5365] close(12) = -1 EBADF (Bad file descriptor) [pid 5365] close(13) = -1 EBADF (Bad file descriptor) [pid 5365] close(14) = -1 EBADF (Bad file descriptor) [pid 5365] close(15) = -1 EBADF (Bad file descriptor) [pid 5365] close(16) = -1 EBADF (Bad file descriptor) [pid 5365] close(17) = -1 EBADF (Bad file descriptor) [pid 5365] close(18) = -1 EBADF (Bad file descriptor) [pid 5365] close(19) = -1 EBADF (Bad file descriptor) [pid 5365] close(20) = -1 EBADF (Bad file descriptor) [pid 5365] close(21) = -1 EBADF (Bad file descriptor) [pid 5365] close(22) = -1 EBADF (Bad file descriptor) [pid 5365] close(23) = -1 EBADF (Bad file descriptor) [pid 5365] close(24) = -1 EBADF (Bad file descriptor) [pid 5365] close(25) = -1 EBADF (Bad file descriptor) [pid 5365] close(26) = -1 EBADF (Bad file descriptor) [pid 5365] close(27) = -1 EBADF (Bad file descriptor) [pid 5365] close(28) = -1 EBADF (Bad file descriptor) [pid 5365] close(29) = -1 EBADF (Bad file descriptor) [pid 5365] exit_group(0) = ? [pid 5365] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=284, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./141/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./141/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./141/cgroup.cpu") = 0 [pid 5064] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./141/binderfs") = 0 [pid 5064] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./141/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5366] exit(0 [pid 5064] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5366] <... exit resumed>) = ? [pid 5064] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5064] newfstatat(4, "", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5366] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=285, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./141/file0") = 0 [pid 5064] umount2("./141/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./141/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./141/cgroup") = 0 [pid 5064] umount2("./141/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./141/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./141/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./141") = 0 [pid 5064] mkdir("./142", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5367 attached , child_tidptr=0x555555a8a650) = 286 [pid 5367] set_robust_list(0x555555a8a660, 24) = 0 [pid 5367] chdir("./142") = 0 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5367] setpgid(0, 0) = 0 [pid 5367] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5367] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5367] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5367] write(3, "1000", 4) = 4 [pid 5367] close(3) = 0 [pid 5367] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5367] mkdir("./file0", 000) = 0 [pid 5367] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5367] open("./file0", O_RDONLY) = 3 [pid 5367] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5367] write(4, "-pids ", 6) = 6 [pid 5367] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5367] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5368 attached ) = 287 [pid 5367] ptrace(PTRACE_ATTACH, 287) = -1 EPERM (Operation not permitted) [pid 5367] close(3) = 0 [pid 5367] close(4) = 0 [pid 5367] close(5) = -1 EBADF (Bad file descriptor) [pid 5367] close(6) = -1 EBADF (Bad file descriptor) [pid 5367] close(7) = -1 EBADF (Bad file descriptor) [pid 5367] close(8) = -1 EBADF (Bad file descriptor) [pid 5367] close(9) = -1 EBADF (Bad file descriptor) [pid 5367] close(10) = -1 EBADF (Bad file descriptor) [pid 5367] close(11) = -1 EBADF (Bad file descriptor) [pid 5367] close(12) = -1 EBADF (Bad file descriptor) [pid 5367] close(13) = -1 EBADF (Bad file descriptor) [pid 5367] close(14) = -1 EBADF (Bad file descriptor) [pid 5367] close(15) = -1 EBADF (Bad file descriptor) [pid 5367] close(16) = -1 EBADF (Bad file descriptor) [pid 5367] close(17) = -1 EBADF (Bad file descriptor) [pid 5367] close(18) = -1 EBADF (Bad file descriptor) [pid 5367] close(19) = -1 EBADF (Bad file descriptor) [pid 5367] close(20) = -1 EBADF (Bad file descriptor) [pid 5367] close(21) = -1 EBADF (Bad file descriptor) [pid 5367] close(22) = -1 EBADF (Bad file descriptor) [pid 5367] close(23) = -1 EBADF (Bad file descriptor) [pid 5367] close(24) = -1 EBADF (Bad file descriptor) [pid 5367] close(25) = -1 EBADF (Bad file descriptor) [pid 5367] close(26) = -1 EBADF (Bad file descriptor) [pid 5367] close(27) = -1 EBADF (Bad file descriptor) [pid 5367] close(28) = -1 EBADF (Bad file descriptor) [pid 5367] close(29) = -1 EBADF (Bad file descriptor) [pid 5367] exit_group(0) = ? [pid 5367] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=286, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5064] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5064] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 7 entries */, 32768) = 208 [pid 5064] umount2("./142/cgroup.cpu", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./142/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./142/cgroup.cpu") = 0 [pid 5064] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./142/binderfs") = 0 [pid 5064] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5064] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./142/file0", {st_mode=S_IFDIR|000, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5368] exit(0 [pid 5064] <... openat resumed>) = 4 [pid 5368] <... exit resumed>) = ? [pid 5064] newfstatat(4, "", [pid 5368] +++ exited with 0 +++ [pid 5064] <... newfstatat resumed>{st_mode=S_IFDIR|000, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=287, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5064] getdents64(4, 0x555555a93730 /* 2 entries */, 32768) = 48 [pid 5064] getdents64(4, 0x555555a93730 /* 0 entries */, 32768) = 0 [pid 5064] close(4) = 0 [pid 5064] rmdir("./142/file0") = 0 [pid 5064] umount2("./142/cgroup", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./142/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./142/cgroup") = 0 [pid 5064] umount2("./142/cgroup.net", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5064] newfstatat(AT_FDCWD, "./142/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5064] unlink("./142/cgroup.net") = 0 [pid 5064] getdents64(3, 0x555555a8b6f0 /* 0 entries */, 32768) = 0 [pid 5064] close(3) = 0 [pid 5064] rmdir("./142") = 0 [pid 5064] mkdir("./143", 0777) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a8a650) = 288 ./strace-static-x86_64: Process 5369 attached [pid 5369] set_robust_list(0x555555a8a660, 24) = 0 [pid 5369] chdir("./143") = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 [pid 5369] symlink("/syzcgroup/unified/syz0", "./cgroup") = 0 [pid 5369] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 5369] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5369] write(3, "1000", 4) = 4 [pid 5369] close(3) = 0 [pid 5369] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5369] mkdir("./file0", 000) = 0 [pid 5369] mount(NULL, "./file0", "cgroup2", 0, NULL) = 0 [pid 5369] open("./file0", O_RDONLY) = 3 [pid 5369] openat(3, "cgroup.subtree_control", O_RDWR) = 4 [pid 5369] write(4, "-pids ", 6) = 6 [pid 5369] write(4, "\x2b\x70\x69\x64\x73\x00", 6) = 6 [pid 5369] clone(child_stack=NULL, flags=SIGCHLD./strace-static-x86_64: Process 5370 attached ) = 289 [pid 5369] ptrace(PTRACE_ATTACH, 289) = -1 EPERM (Operation not permitted) [pid 5369] close(3) = 0 [pid 5369] close(4) = 0 [pid 5369] close(5) = -1 EBADF (Bad file descriptor) [pid 5369] close(6) = -1 EBADF (Bad file descriptor) [pid 5369] close(7) = -1 EBADF (Bad file descriptor) [pid 5369] close(8) = -1 EBADF (Bad file descriptor) [pid 5369] close(9) = -1 EBADF (Bad file descriptor) [pid 5369] close(10) = -1 EBADF (Bad file descriptor) [pid 5369] close(11) = -1 EBADF (Bad file descriptor) [pid 5369] close(12) = -1 EBADF (Bad file descriptor) [pid 5369] close(13) = -1 EBADF (Bad file descriptor) [pid 5369] close(14) = -1 EBADF (Bad file descriptor) [pid 5369] close(15) = -1 EBADF (Bad file descriptor) [pid 5369] close(16) = -1 EBADF (Bad file descriptor) [pid 5369] close(17) = -1 EBADF (Bad file descriptor) [pid 5369] close(18) = -1 EBADF (Bad file descriptor) [pid 5369] close(19) = -1 EBADF (Bad file descriptor)