./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4120518411 <...> Warning: Permanently added '10.128.1.117' (ED25519) to the list of known hosts. execve("./syz-executor4120518411", ["./syz-executor4120518411"], 0x7ffd1b426640 /* 10 vars */) = 0 brk(NULL) = 0x5555568a7000 brk(0x5555568a7e00) = 0x5555568a7e00 arch_prctl(ARCH_SET_FS, 0x5555568a7480) = 0 set_tid_address(0x5555568a7750) = 5066 set_robust_list(0x5555568a7760, 24) = 0 rseq(0x5555568a7da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4120518411", 4096) = 28 getrandom("\x3e\x8b\x8c\xef\x62\xca\x85\xd3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555568a7e00 brk(0x5555568c8e00) = 0x5555568c8e00 brk(0x5555568c9000) = 0x5555568c9000 mprotect(0x7f51ca546000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f51ca49c940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f51ca4a5450}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f51ca49c940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f51ca4a5450}, NULL, 8) = 0 getrandom("\x88\x75\xfa\x83\x2b\x63\x33\xe4", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.8G1VJM", 0700) = 0 chmod("./syzkaller.8G1VJM", 0777) = 0 chdir("./syzkaller.8G1VJM") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5067 attached , child_tidptr=0x5555568a7750) = 5067 [pid 5067] set_robust_list(0x5555568a7760, 24) = 0 [pid 5067] chdir("./0") = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5067] memfd_create("syzkaller", 0) = 3 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5067] munmap(0x7f51c2093000, 138412032) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5067] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5067] close(3) = 0 [pid 5067] mkdir("./bus", 0777) = 0 [pid 5067] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5067] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5067] chdir("./bus") = 0 [pid 5067] ioctl(4, LOOP_CLR_FD) = 0 [ 60.694476][ T5067] loop0: detected capacity change from 0 to 512 [ 60.719571][ T5067] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 60.732313][ T5067] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/0/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5067] close(4) = 0 [pid 5067] mkdir("./bus", 0777) = 0 [pid 5067] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5067] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5067] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5067] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5067] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5067] exit_group(0) = ? [pid 5067] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/bus") = 0 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5072 attached , child_tidptr=0x5555568a7750) = 5072 [ 60.826334][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5072] set_robust_list(0x5555568a7760, 24) = 0 [pid 5072] chdir("./1") = 0 [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5072] setpgid(0, 0) = 0 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1000", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5072] memfd_create("syzkaller", 0) = 3 [pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5072] munmap(0x7f51c2093000, 138412032) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5072] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5072] close(3) = 0 [pid 5072] mkdir("./bus", 0777) = 0 [ 60.981162][ T5072] loop0: detected capacity change from 0 to 512 [ 61.013342][ T5072] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5072] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5072] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5072] chdir("./bus") = 0 [pid 5072] ioctl(4, LOOP_CLR_FD) = 0 [pid 5072] close(4) = 0 [pid 5072] mkdir("./bus", 0777) = 0 [pid 5072] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5072] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5072] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5072] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 61.025941][ T5072] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/1/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5072] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5072] exit_group(0) = ? [pid 5072] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/bus") = 0 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5075 attached , child_tidptr=0x5555568a7750) = 5075 [pid 5075] set_robust_list(0x5555568a7760, 24) = 0 [pid 5075] chdir("./2") = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 61.103428][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5075] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5075] munmap(0x7f51c2093000, 138412032) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5075] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5075] close(3) = 0 [pid 5075] mkdir("./bus", 0777) = 0 [ 61.191943][ T5075] loop0: detected capacity change from 0 to 512 [ 61.223039][ T5075] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5075] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5075] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5075] chdir("./bus") = 0 [pid 5075] ioctl(4, LOOP_CLR_FD) = 0 [pid 5075] close(4) = 0 [pid 5075] mkdir("./bus", 0777) = 0 [pid 5075] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5075] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5075] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5075] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5075] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5075] exit_group(0) = ? [ 61.235616][ T5075] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/2/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5075] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/bus") = 0 umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5078 attached , child_tidptr=0x5555568a7750) = 5078 [pid 5078] set_robust_list(0x5555568a7760, 24) = 0 [pid 5078] chdir("./3") = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [ 61.322261][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5078] memfd_create("syzkaller", 0) = 3 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5078] munmap(0x7f51c2093000, 138412032) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5078] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5078] close(3) = 0 [pid 5078] mkdir("./bus", 0777) = 0 [ 61.400550][ T5078] loop0: detected capacity change from 0 to 512 [ 61.433279][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5078] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5078] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5078] chdir("./bus") = 0 [pid 5078] ioctl(4, LOOP_CLR_FD) = 0 [pid 5078] close(4) = 0 [pid 5078] mkdir("./bus", 0777) = 0 [pid 5078] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5078] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 61.446273][ T5078] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/3/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5078] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5078] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5078] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5078] exit_group(0) = ? [pid 5078] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/bus") = 0 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached [ 61.529213][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. , child_tidptr=0x5555568a7750) = 5081 [pid 5081] set_robust_list(0x5555568a7760, 24) = 0 [pid 5081] chdir("./4") = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5081] munmap(0x7f51c2093000, 138412032) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5081] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5081] close(3) = 0 [pid 5081] mkdir("./bus", 0777) = 0 [pid 5081] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5081] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] chdir("./bus") = 0 [pid 5081] ioctl(4, LOOP_CLR_FD) = 0 [pid 5081] close(4) = 0 [pid 5081] mkdir("./bus", 0777) = 0 [ 61.632808][ T5081] loop0: detected capacity change from 0 to 512 [ 61.652989][ T5081] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 61.665595][ T5081] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/4/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5081] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5081] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5081] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5081] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5081] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5081] exit_group(0) = ? [pid 5081] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 61.742978][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/bus") = 0 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5084 attached [pid 5084] set_robust_list(0x5555568a7760, 24) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5084 [pid 5084] chdir("./5") = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5084] setpgid(0, 0) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5084] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5084] memfd_create("syzkaller", 0) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5084] munmap(0x7f51c2093000, 138412032) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] mkdir("./bus", 0777) = 0 [pid 5084] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5084] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] chdir("./bus") = 0 [pid 5084] ioctl(4, LOOP_CLR_FD) = 0 [pid 5084] close(4) = 0 [pid 5084] mkdir("./bus", 0777) = 0 [pid 5084] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5084] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 61.894564][ T5084] loop0: detected capacity change from 0 to 512 [ 61.913126][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 61.925648][ T5084] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/5/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5084] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5084] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5084] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5084] exit_group(0) = ? [pid 5084] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 [ 61.997837][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./5/bus") = 0 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5087 [pid 5087] <... set_robust_list resumed>) = 0 [pid 5087] chdir("./6") = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5087] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5087] munmap(0x7f51c2093000, 138412032) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5087] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5087] close(3) = 0 [pid 5087] mkdir("./bus", 0777) = 0 [ 62.145731][ T5087] loop0: detected capacity change from 0 to 512 [ 62.183435][ T5087] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5087] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5087] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5087] chdir("./bus") = 0 [pid 5087] ioctl(4, LOOP_CLR_FD) = 0 [pid 5087] close(4) = 0 [pid 5087] mkdir("./bus", 0777) = 0 [pid 5087] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5087] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5087] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 62.195934][ T5087] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/6/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5087] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5087] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5087] exit_group(0) = ? [pid 5087] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/bus") = 0 umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x5555568a7760, 24) = 0 [pid 5090] chdir("./7") = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs") = 0 [ 62.269717][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5090] munmap(0x7f51c2093000, 138412032) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./bus", 0777) = 0 [ 62.336912][ T5090] loop0: detected capacity change from 0 to 512 [ 62.363233][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5090] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5090] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./bus") = 0 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [pid 5090] mkdir("./bus", 0777) = 0 [pid 5090] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5090] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 62.375716][ T5090] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/7/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5090] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5090] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5090] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/bus") = 0 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 62.447140][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. unlink("./7/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached , child_tidptr=0x5555568a7750) = 5093 [pid 5093] set_robust_list(0x5555568a7760, 24) = 0 [pid 5093] chdir("./8") = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5093] munmap(0x7f51c2093000, 138412032) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5093] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5093] close(3) = 0 [pid 5093] mkdir("./bus", 0777) = 0 [ 62.585408][ T5093] loop0: detected capacity change from 0 to 512 [ 62.613480][ T5093] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5093] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5093] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./bus") = 0 [pid 5093] ioctl(4, LOOP_CLR_FD) = 0 [pid 5093] close(4) = 0 [pid 5093] mkdir("./bus", 0777) = 0 [pid 5093] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 62.626116][ T5093] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/8/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5093] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5093] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5093] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5093] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5093] exit_group(0) = ? [pid 5093] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 62.709908][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/bus") = 0 umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5096 attached , child_tidptr=0x5555568a7750) = 5096 [pid 5096] set_robust_list(0x5555568a7760, 24) = 0 [pid 5096] chdir("./9") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5096] munmap(0x7f51c2093000, 138412032) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] mkdir("./bus", 0777) = 0 [pid 5096] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5096] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./bus") = 0 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [pid 5096] mkdir("./bus", 0777) = 0 [pid 5096] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 62.853973][ T5096] loop0: detected capacity change from 0 to 512 [ 62.873805][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 62.886297][ T5096] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/9/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5096] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5096] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5096] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5096] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/bus") = 0 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 62.964290][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5099 attached , child_tidptr=0x5555568a7750) = 5099 [pid 5099] set_robust_list(0x5555568a7760, 24) = 0 [pid 5099] chdir("./10") = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5099] munmap(0x7f51c2093000, 138412032) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5099] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5099] close(3) = 0 [pid 5099] mkdir("./bus", 0777) = 0 [ 63.132793][ T5099] loop0: detected capacity change from 0 to 512 [ 63.163812][ T5099] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5099] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5099] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5099] chdir("./bus") = 0 [pid 5099] ioctl(4, LOOP_CLR_FD) = 0 [pid 5099] close(4) = 0 [pid 5099] mkdir("./bus", 0777) = 0 [pid 5099] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5099] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5099] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5099] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5099] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5099] exit_group(0) = ? [pid 5099] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 [ 63.176382][ T5099] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/10/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/bus") = 0 umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 63.234418][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x5555568a7760, 24) = 0 [pid 5102] chdir("./11" [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5102 [pid 5102] <... chdir resumed>) = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5102] munmap(0x7f51c2093000, 138412032) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] mkdir("./bus", 0777) = 0 [pid 5102] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5102] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./bus") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [ 63.319462][ T5102] loop0: detected capacity change from 0 to 512 [ 63.343468][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 63.356057][ T5102] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/11/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5102] mkdir("./bus", 0777) = 0 [pid 5102] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5102] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5102] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5102] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5102] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/bus") = 0 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 63.465530][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5105 attached [pid 5105] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5105 [pid 5105] <... set_robust_list resumed>) = 0 [pid 5105] chdir("./12") = 0 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5105] setpgid(0, 0) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5105] write(3, "1000", 4) = 4 [pid 5105] close(3) = 0 [pid 5105] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5105] memfd_create("syzkaller", 0) = 3 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5105] munmap(0x7f51c2093000, 138412032) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5105] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5105] close(3) = 0 [pid 5105] mkdir("./bus", 0777) = 0 [ 63.580752][ T5105] loop0: detected capacity change from 0 to 512 [ 63.613219][ T5105] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5105] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5105] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./bus") = 0 [pid 5105] ioctl(4, LOOP_CLR_FD) = 0 [pid 5105] close(4) = 0 [pid 5105] mkdir("./bus", 0777) = 0 [pid 5105] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5105] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5105] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5105] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5105] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5105] exit_group(0) = ? [pid 5105] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 63.625774][ T5105] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/12/bus supports timestamps until 2038-01-19 (0x7fffffff) getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/bus") = 0 umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x5555568a7760, 24) = 0 [pid 5108] chdir("./13") = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [ 63.696293][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5108] munmap(0x7f51c2093000, 138412032) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] mkdir("./bus", 0777) = 0 [ 63.773053][ T5108] loop0: detected capacity change from 0 to 512 [ 63.803706][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5108] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5108] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./bus") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [ 63.816281][ T5108] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/13/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5108] mkdir("./bus", 0777) = 0 [pid 5108] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5108] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5108] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5108] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5108] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5108] exit_group(0) = ? [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/bus") = 0 umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5111 attached , child_tidptr=0x5555568a7750) = 5111 [pid 5111] set_robust_list(0x5555568a7760, 24) = 0 [pid 5111] chdir("./14") = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5111] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [ 63.914653][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5111] munmap(0x7f51c2093000, 138412032) = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5111] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5111] close(3) = 0 [pid 5111] mkdir("./bus", 0777) = 0 [ 63.991538][ T5111] loop0: detected capacity change from 0 to 512 [ 64.023572][ T5111] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5111] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5111] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5111] chdir("./bus") = 0 [pid 5111] ioctl(4, LOOP_CLR_FD) = 0 [pid 5111] close(4) = 0 [pid 5111] mkdir("./bus", 0777) = 0 [pid 5111] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5111] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5111] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 64.036114][ T5111] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/14/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5111] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5111] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5111] exit_group(0) = ? [pid 5111] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 64.121052][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/bus") = 0 umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5114 attached [pid 5114] set_robust_list(0x5555568a7760, 24) = 0 [pid 5114] chdir("./15") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5114 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5114] munmap(0x7f51c2093000, 138412032) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] mkdir("./bus", 0777) = 0 [ 64.267643][ T5114] loop0: detected capacity change from 0 to 512 [ 64.302883][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5114] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5114] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./bus") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [pid 5114] mkdir("./bus", 0777) = 0 [pid 5114] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5114] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 64.315461][ T5114] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/15/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5114] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5114] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5114] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5114] exit_group(0) = ? [pid 5114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 [ 64.430426][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/bus") = 0 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5117 attached , child_tidptr=0x5555568a7750) = 5117 [pid 5117] set_robust_list(0x5555568a7760, 24) = 0 [pid 5117] chdir("./16") = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5117] munmap(0x7f51c2093000, 138412032) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5117] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5117] close(3) = 0 [pid 5117] mkdir("./bus", 0777) = 0 [ 64.582702][ T5117] loop0: detected capacity change from 0 to 512 [pid 5117] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5117] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5117] chdir("./bus") = 0 [pid 5117] ioctl(4, LOOP_CLR_FD) = 0 [pid 5117] close(4) = 0 [ 64.633197][ T5117] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 64.645720][ T5117] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/16/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5117] mkdir("./bus", 0777) = 0 [pid 5117] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5117] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5117] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5117] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5117] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5117] exit_group(0) = ? [pid 5117] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/bus") = 0 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5120 attached [ 64.734109][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5120] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5120 [pid 5120] <... set_robust_list resumed>) = 0 [pid 5120] chdir("./17") = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5120] munmap(0x7f51c2093000, 138412032) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] mkdir("./bus", 0777) = 0 [ 64.834232][ T5120] loop0: detected capacity change from 0 to 512 [pid 5120] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5120] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./bus") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [pid 5120] mkdir("./bus", 0777) = 0 [pid 5120] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5120] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5120] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5120] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5120] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [ 64.872973][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 64.885494][ T5120] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/17/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5120] exit_group(0) = ? [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/bus") = 0 umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 64.961024][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5123 attached [pid 5123] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5123 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5123] chdir("./18") = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5123] setpgid(0, 0) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5123] write(3, "1000", 4) = 4 [pid 5123] close(3) = 0 [pid 5123] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5123] memfd_create("syzkaller", 0) = 3 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5123] munmap(0x7f51c2093000, 138412032) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5123] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5123] close(3) = 0 [pid 5123] mkdir("./bus", 0777) = 0 [ 65.085781][ T5123] loop0: detected capacity change from 0 to 512 [ 65.123134][ T5123] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5123] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5123] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5123] chdir("./bus") = 0 [pid 5123] ioctl(4, LOOP_CLR_FD) = 0 [pid 5123] close(4) = 0 [pid 5123] mkdir("./bus", 0777) = 0 [pid 5123] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5123] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 65.136003][ T5123] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/18/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5123] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5123] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5123] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5123] exit_group(0) = ? [pid 5123] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/bus") = 0 umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 65.214813][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5126] set_robust_list(0x5555568a7760, 24) = 0 [pid 5126] chdir("./19") = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5126] munmap(0x7f51c2093000, 138412032) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5126] close(3) = 0 [pid 5126] mkdir("./bus", 0777) = 0 [pid 5126] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5126] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./bus") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [ 65.319348][ T5126] loop0: detected capacity change from 0 to 512 [ 65.343896][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.356526][ T5126] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/19/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5126] mkdir("./bus", 0777) = 0 [pid 5126] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5126] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5126] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5126] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5126] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/bus") = 0 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 65.438593][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5129 attached [pid 5129] set_robust_list(0x5555568a7760, 24) = 0 [pid 5129] chdir("./20" [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5129 [pid 5129] <... chdir resumed>) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5129] munmap(0x7f51c2093000, 138412032) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5129] close(3) = 0 [pid 5129] mkdir("./bus", 0777) = 0 [pid 5129] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5129] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./bus") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] mkdir("./bus", 0777) = 0 [ 65.564246][ T5129] loop0: detected capacity change from 0 to 512 [ 65.583419][ T5129] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.596062][ T5129] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/20/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5129] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5129] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5129] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5129] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5129] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5129] exit_group(0) = ? [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/bus") = 0 umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5133 ./strace-static-x86_64: Process 5133 attached [pid 5133] set_robust_list(0x5555568a7760, 24) = 0 [pid 5133] chdir("./21") = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 65.663353][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5133] write(3, "1000", 4) = 4 [pid 5133] close(3) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5133] memfd_create("syzkaller", 0) = 3 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5133] munmap(0x7f51c2093000, 138412032) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5133] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5133] close(3) = 0 [pid 5133] mkdir("./bus", 0777) = 0 [pid 5133] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5133] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5133] chdir("./bus") = 0 [pid 5133] ioctl(4, LOOP_CLR_FD) = 0 [pid 5133] close(4) = 0 [pid 5133] mkdir("./bus", 0777) = 0 [pid 5133] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5133] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 65.772888][ T5133] loop0: detected capacity change from 0 to 512 [ 65.793602][ T5133] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.806172][ T5133] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/21/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5133] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5133] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5133] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5133] exit_group(0) = ? [pid 5133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/bus") = 0 umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 65.895172][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. unlink("./21/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5137 attached , child_tidptr=0x5555568a7750) = 5137 [pid 5137] set_robust_list(0x5555568a7760, 24) = 0 [pid 5137] chdir("./22") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5137] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5137] munmap(0x7f51c2093000, 138412032) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5137] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5137] close(3) = 0 [pid 5137] mkdir("./bus", 0777) = 0 [pid 5137] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5137] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5137] chdir("./bus") = 0 [ 66.047395][ T5137] loop0: detected capacity change from 0 to 512 [ 66.073024][ T5137] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 66.085599][ T5137] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/22/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5137] ioctl(4, LOOP_CLR_FD) = 0 [pid 5137] close(4) = 0 [pid 5137] mkdir("./bus", 0777) = 0 [pid 5137] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5137] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5137] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5137] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5137] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5137] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 66.163690][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/bus") = 0 umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5140 attached , child_tidptr=0x5555568a7750) = 5140 [pid 5140] set_robust_list(0x5555568a7760, 24) = 0 [pid 5140] chdir("./23") = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] memfd_create("syzkaller", 0) = 3 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5140] munmap(0x7f51c2093000, 138412032) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5140] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5140] close(3) = 0 [pid 5140] mkdir("./bus", 0777) = 0 [ 66.374894][ T5140] loop0: detected capacity change from 0 to 512 [ 66.403353][ T5140] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5140] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5140] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5140] chdir("./bus") = 0 [pid 5140] ioctl(4, LOOP_CLR_FD) = 0 [pid 5140] close(4) = 0 [pid 5140] mkdir("./bus", 0777) = 0 [pid 5140] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 66.415906][ T5140] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/23/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5140] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5140] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5140] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5140] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5140] exit_group(0) = ? [pid 5140] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/bus") = 0 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5143 attached [pid 5143] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5143 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5143] chdir("./24") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 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 [ 66.517551][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] memfd_create("syzkaller", 0) = 3 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5143] munmap(0x7f51c2093000, 138412032) = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5143] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5143] close(3) = 0 [pid 5143] mkdir("./bus", 0777) = 0 [ 66.618677][ T5143] loop0: detected capacity change from 0 to 512 [pid 5143] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5143] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5143] chdir("./bus") = 0 [pid 5143] ioctl(4, LOOP_CLR_FD) = 0 [pid 5143] close(4) = 0 [ 66.663338][ T5143] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 66.675931][ T5143] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/24/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5143] mkdir("./bus", 0777) = 0 [pid 5143] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5143] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5143] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5143] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5143] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5143] exit_group(0) = ? [pid 5143] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/bus") = 0 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 66.758329][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5146 attached , child_tidptr=0x5555568a7750) = 5146 [pid 5146] set_robust_list(0x5555568a7760, 24) = 0 [pid 5146] chdir("./25") = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [pid 5146] close(3) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5146] memfd_create("syzkaller", 0) = 3 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5146] munmap(0x7f51c2093000, 138412032) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5146] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5146] close(3) = 0 [pid 5146] mkdir("./bus", 0777) = 0 [ 66.900286][ T5146] loop0: detected capacity change from 0 to 512 [ 66.933531][ T5146] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5146] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5146] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5146] chdir("./bus") = 0 [pid 5146] ioctl(4, LOOP_CLR_FD) = 0 [pid 5146] close(4) = 0 [pid 5146] mkdir("./bus", 0777) = 0 [pid 5146] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5146] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 66.946023][ T5146] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/25/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5146] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5146] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5146] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5146] exit_group(0) = ? [pid 5146] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/bus") = 0 umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5149 attached , child_tidptr=0x5555568a7750) = 5149 [pid 5149] set_robust_list(0x5555568a7760, 24) = 0 [pid 5149] chdir("./26") = 0 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] symlink("/dev/binderfs", "./binderfs") = 0 [ 67.044536][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5149] memfd_create("syzkaller", 0) = 3 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5149] munmap(0x7f51c2093000, 138412032) = 0 [pid 5149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5149] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5149] close(3) = 0 [pid 5149] mkdir("./bus", 0777) = 0 [pid 5149] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5149] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5149] chdir("./bus") = 0 [pid 5149] ioctl(4, LOOP_CLR_FD) = 0 [pid 5149] close(4) = 0 [ 67.119170][ T5149] loop0: detected capacity change from 0 to 512 [ 67.143464][ T5149] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 67.156056][ T5149] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/26/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5149] mkdir("./bus", 0777) = 0 [pid 5149] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5149] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5149] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5149] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5149] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5149] exit_group(0) = ? [pid 5149] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/bus") = 0 umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 [ 67.267056][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5152 ./strace-static-x86_64: Process 5152 attached [pid 5152] set_robust_list(0x5555568a7760, 24) = 0 [pid 5152] chdir("./27") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5152] munmap(0x7f51c2093000, 138412032) = 0 [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5152] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5152] close(3) = 0 [pid 5152] mkdir("./bus", 0777) = 0 [ 67.397074][ T5152] loop0: detected capacity change from 0 to 512 [ 67.433025][ T5152] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5152] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5152] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] chdir("./bus") = 0 [pid 5152] ioctl(4, LOOP_CLR_FD) = 0 [pid 5152] close(4) = 0 [pid 5152] mkdir("./bus", 0777) = 0 [pid 5152] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5152] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5152] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5152] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5152] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5152] exit_group(0) = ? [pid 5152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 [ 67.445610][ T5152] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/27/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/bus") = 0 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 [ 67.497309][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5155 attached , child_tidptr=0x5555568a7750) = 5155 [pid 5155] set_robust_list(0x5555568a7760, 24) = 0 [pid 5155] chdir("./28") = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5155] memfd_create("syzkaller", 0) = 3 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5155] munmap(0x7f51c2093000, 138412032) = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5155] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5155] close(3) = 0 [pid 5155] mkdir("./bus", 0777) = 0 [pid 5155] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5155] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5155] chdir("./bus") = 0 [pid 5155] ioctl(4, LOOP_CLR_FD) = 0 [pid 5155] close(4) = 0 [pid 5155] mkdir("./bus", 0777) = 0 [pid 5155] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5155] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 67.614183][ T5155] loop0: detected capacity change from 0 to 512 [ 67.633289][ T5155] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 67.645842][ T5155] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/28/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5155] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5155] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5155] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5155] exit_group(0) = ? [pid 5155] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/bus") = 0 umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 [ 67.726962][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5158 attached , child_tidptr=0x5555568a7750) = 5158 [pid 5158] set_robust_list(0x5555568a7760, 24) = 0 [pid 5158] chdir("./29") = 0 [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5158] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5158] munmap(0x7f51c2093000, 138412032) = 0 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5158] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5158] close(3) = 0 [pid 5158] mkdir("./bus", 0777) = 0 [pid 5158] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5158] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5158] chdir("./bus") = 0 [pid 5158] ioctl(4, LOOP_CLR_FD) = 0 [pid 5158] close(4) = 0 [pid 5158] mkdir("./bus", 0777) = 0 [ 67.827268][ T5158] loop0: detected capacity change from 0 to 512 [ 67.843461][ T5158] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 67.856261][ T5158] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/29/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5158] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5158] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5158] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5158] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5158] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5158] exit_group(0) = ? [pid 5158] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/bus") = 0 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 67.945019][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5161 attached [pid 5161] set_robust_list(0x5555568a7760, 24) = 0 [pid 5161] chdir("./30") = 0 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5161 [pid 5161] setpgid(0, 0) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5161] write(3, "1000", 4) = 4 [pid 5161] close(3) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5161] memfd_create("syzkaller", 0) = 3 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5161] munmap(0x7f51c2093000, 138412032) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5161] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5161] close(3) = 0 [pid 5161] mkdir("./bus", 0777) = 0 [pid 5161] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5161] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5161] chdir("./bus") = 0 [pid 5161] ioctl(4, LOOP_CLR_FD) = 0 [pid 5161] close(4) = 0 [pid 5161] mkdir("./bus", 0777) = 0 [pid 5161] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5161] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5161] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5161] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5161] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5161] exit_group(0) = ? [ 68.074348][ T5161] loop0: detected capacity change from 0 to 512 [ 68.093603][ T5161] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 68.106126][ T5161] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/30/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5161] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/bus") = 0 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5164 attached , child_tidptr=0x5555568a7750) = 5164 [ 68.168340][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5164] set_robust_list(0x5555568a7760, 24) = 0 [pid 5164] chdir("./31") = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5164] setpgid(0, 0) = 0 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3) = 0 [pid 5164] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5164] memfd_create("syzkaller", 0) = 3 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5164] munmap(0x7f51c2093000, 138412032) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] mkdir("./bus", 0777) = 0 [pid 5164] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5164] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] chdir("./bus") = 0 [pid 5164] ioctl(4, LOOP_CLR_FD) = 0 [pid 5164] close(4) = 0 [pid 5164] mkdir("./bus", 0777) = 0 [pid 5164] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5164] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 68.264554][ T5164] loop0: detected capacity change from 0 to 512 [ 68.283597][ T5164] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 68.296145][ T5164] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/31/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5164] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5164] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5164] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5164] exit_group(0) = ? [pid 5164] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/bus") = 0 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5167 attached , child_tidptr=0x5555568a7750) = 5167 [pid 5167] set_robust_list(0x5555568a7760, 24) = 0 [pid 5167] chdir("./32") = 0 [ 68.382965][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5167] munmap(0x7f51c2093000, 138412032) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5167] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5167] close(3) = 0 [pid 5167] mkdir("./bus", 0777) = 0 [ 68.514430][ T5167] loop0: detected capacity change from 0 to 512 [pid 5167] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5167] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5167] chdir("./bus") = 0 [pid 5167] ioctl(4, LOOP_CLR_FD) = 0 [pid 5167] close(4) = 0 [ 68.553308][ T5167] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/32/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5167] mkdir("./bus", 0777) = 0 [pid 5167] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5167] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5167] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5167] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5167] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5167] exit_group(0) = ? [pid 5167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/bus") = 0 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5170 attached , child_tidptr=0x5555568a7750) = 5170 [pid 5170] set_robust_list(0x5555568a7760, 24) = 0 [pid 5170] chdir("./33") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5170] memfd_create("syzkaller", 0) = 3 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5170] munmap(0x7f51c2093000, 138412032) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5170] close(3) = 0 [pid 5170] mkdir("./bus", 0777) = 0 [pid 5170] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5170] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] chdir("./bus") = 0 [pid 5170] ioctl(4, LOOP_CLR_FD) = 0 [pid 5170] close(4) = 0 [pid 5170] mkdir("./bus", 0777) = 0 [pid 5170] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5170] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5170] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5170] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5170] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 68.752841][ T5170] loop0: detected capacity change from 0 to 512 [ 68.773187][ T5170] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/33/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/bus") = 0 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5173 attached , child_tidptr=0x5555568a7750) = 5173 [pid 5173] set_robust_list(0x5555568a7760, 24) = 0 [pid 5173] chdir("./34") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5173] munmap(0x7f51c2093000, 138412032) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] mkdir("./bus", 0777) = 0 [pid 5173] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5173] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] chdir("./bus") = 0 [pid 5173] ioctl(4, LOOP_CLR_FD) = 0 [pid 5173] close(4) = 0 [pid 5173] mkdir("./bus", 0777) = 0 [pid 5173] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5173] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 68.985679][ T5173] loop0: detected capacity change from 0 to 512 [ 69.013037][ T5173] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/34/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5173] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5173] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5173] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/bus") = 0 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5176 [pid 5176] <... set_robust_list resumed>) = 0 [pid 5176] chdir("./35") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5176] munmap(0x7f51c2093000, 138412032) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] mkdir("./bus", 0777) = 0 [pid 5176] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5176] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] chdir("./bus") = 0 [pid 5176] ioctl(4, LOOP_CLR_FD) = 0 [pid 5176] close(4) = 0 [ 69.226792][ T5176] loop0: detected capacity change from 0 to 512 [ 69.263236][ T5176] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/35/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5176] mkdir("./bus", 0777) = 0 [pid 5176] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5176] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5176] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5176] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5176] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5176] exit_group(0) = ? [pid 5176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/bus") = 0 umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5179 attached , child_tidptr=0x5555568a7750) = 5179 [pid 5179] set_robust_list(0x5555568a7760, 24) = 0 [pid 5179] chdir("./36") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5179] munmap(0x7f51c2093000, 138412032) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] mkdir("./bus", 0777) = 0 [pid 5179] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5179] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] chdir("./bus") = 0 [pid 5179] ioctl(4, LOOP_CLR_FD) = 0 [pid 5179] close(4) = 0 [pid 5179] mkdir("./bus", 0777) = 0 [pid 5179] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5179] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5179] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5179] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5179] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 69.407122][ T5179] loop0: detected capacity change from 0 to 512 [ 69.423417][ T5179] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/36/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/bus") = 0 umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5182 attached , child_tidptr=0x5555568a7750) = 5182 [pid 5182] set_robust_list(0x5555568a7760, 24) = 0 [pid 5182] chdir("./37") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5182] munmap(0x7f51c2093000, 138412032) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5182] close(3) = 0 [pid 5182] mkdir("./bus", 0777) = 0 [pid 5182] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5182] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5182] chdir("./bus") = 0 [pid 5182] ioctl(4, LOOP_CLR_FD) = 0 [pid 5182] close(4) = 0 [pid 5182] mkdir("./bus", 0777) = 0 [pid 5182] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5182] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 69.639456][ T5182] loop0: detected capacity change from 0 to 512 [ 69.663007][ T5182] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/37/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5182] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5182] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5182] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/bus") = 0 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5185 attached [pid 5185] set_robust_list(0x5555568a7760, 24) = 0 [pid 5185] chdir("./38") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5185 [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5185] munmap(0x7f51c2093000, 138412032) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5185] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5185] close(3) = 0 [pid 5185] mkdir("./bus", 0777) = 0 [pid 5185] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5185] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5185] chdir("./bus") = 0 [pid 5185] ioctl(4, LOOP_CLR_FD) = 0 [pid 5185] close(4) = 0 [ 69.894523][ T5185] loop0: detected capacity change from 0 to 512 [ 69.923320][ T5185] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/38/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5185] mkdir("./bus", 0777) = 0 [pid 5185] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5185] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5185] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5185] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5185] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/bus") = 0 umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5188 attached [pid 5188] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5188 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5188] chdir("./39") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5188] munmap(0x7f51c2093000, 138412032) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] mkdir("./bus", 0777) = 0 [pid 5188] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5188] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] chdir("./bus") = 0 [pid 5188] ioctl(4, LOOP_CLR_FD) = 0 [pid 5188] close(4) = 0 [pid 5188] mkdir("./bus", 0777) = 0 [ 70.108002][ T5188] loop0: detected capacity change from 0 to 512 [ 70.133286][ T5188] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/39/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5188] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5188] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5188] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5188] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5188] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/bus") = 0 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5191 attached [pid 5191] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5191 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5191] chdir("./40") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5191] munmap(0x7f51c2093000, 138412032) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5191] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5191] close(3) = 0 [pid 5191] mkdir("./bus", 0777) = 0 [pid 5191] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5191] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./bus") = 0 [pid 5191] ioctl(4, LOOP_CLR_FD) = 0 [pid 5191] close(4) = 0 [pid 5191] mkdir("./bus", 0777) = 0 [pid 5191] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5191] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 70.363509][ T5191] loop0: detected capacity change from 0 to 512 [ 70.393761][ T5191] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/40/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5191] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5191] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5191] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5191] exit_group(0) = ? [pid 5191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/bus") = 0 umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5194 attached , child_tidptr=0x5555568a7750) = 5194 [pid 5194] set_robust_list(0x5555568a7760, 24) = 0 [pid 5194] chdir("./41") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5194] munmap(0x7f51c2093000, 138412032) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] mkdir("./bus", 0777) = 0 [pid 5194] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5194] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] chdir("./bus") = 0 [pid 5194] ioctl(4, LOOP_CLR_FD) = 0 [pid 5194] close(4) = 0 [pid 5194] mkdir("./bus", 0777) = 0 [pid 5194] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5194] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5194] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5194] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5194] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5194] exit_group(0) = ? [ 70.614534][ T5194] loop0: detected capacity change from 0 to 512 [ 70.633838][ T5194] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/41/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/bus") = 0 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5198 attached , child_tidptr=0x5555568a7750) = 5198 [pid 5198] set_robust_list(0x5555568a7760, 24) = 0 [pid 5198] chdir("./42") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] memfd_create("syzkaller", 0) = 3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5198] munmap(0x7f51c2093000, 138412032) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5198] close(3) = 0 [pid 5198] mkdir("./bus", 0777) = 0 [ 70.769237][ T5198] loop0: detected capacity change from 0 to 512 [pid 5198] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5198] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5198] chdir("./bus") = 0 [pid 5198] ioctl(4, LOOP_CLR_FD) = 0 [pid 5198] close(4) = 0 [pid 5198] mkdir("./bus", 0777) = 0 [pid 5198] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5198] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5198] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5198] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5198] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5198] exit_group(0) = ? [pid 5198] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 [ 70.813318][ T5198] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/42/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/bus") = 0 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5201 ./strace-static-x86_64: Process 5201 attached [pid 5201] set_robust_list(0x5555568a7760, 24) = 0 [pid 5201] chdir("./43") = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5201] munmap(0x7f51c2093000, 138412032) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5201] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5201] close(3) = 0 [pid 5201] mkdir("./bus", 0777) = 0 [pid 5201] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5201] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5201] chdir("./bus") = 0 [pid 5201] ioctl(4, LOOP_CLR_FD) = 0 [pid 5201] close(4) = 0 [ 71.119404][ T5201] loop0: detected capacity change from 0 to 512 [ 71.143497][ T5201] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/43/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5201] mkdir("./bus", 0777) = 0 [pid 5201] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5201] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5201] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5201] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5201] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5201] exit_group(0) = ? [pid 5201] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/bus") = 0 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5204 attached [pid 5204] set_robust_list(0x5555568a7760, 24) = 0 [pid 5204] chdir("./44") = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5204 [pid 5204] setpgid(0, 0) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5204] memfd_create("syzkaller", 0) = 3 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5204] munmap(0x7f51c2093000, 138412032) = 0 [pid 5204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5204] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5204] close(3) = 0 [pid 5204] mkdir("./bus", 0777) = 0 [pid 5204] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5204] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5204] chdir("./bus") = 0 [pid 5204] ioctl(4, LOOP_CLR_FD) = 0 [pid 5204] close(4) = 0 [ 71.372661][ T5204] loop0: detected capacity change from 0 to 512 [ 71.403466][ T5204] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/44/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5204] mkdir("./bus", 0777) = 0 [pid 5204] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5204] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5204] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5204] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5204] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5204] exit_group(0) = ? [pid 5204] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/bus") = 0 umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5207 attached , child_tidptr=0x5555568a7750) = 5207 [pid 5207] set_robust_list(0x5555568a7760, 24) = 0 [pid 5207] chdir("./45") = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5207] munmap(0x7f51c2093000, 138412032) = 0 [pid 5207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5207] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5207] close(3) = 0 [pid 5207] mkdir("./bus", 0777) = 0 [pid 5207] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5207] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5207] chdir("./bus") = 0 [pid 5207] ioctl(4, LOOP_CLR_FD) = 0 [pid 5207] close(4) = 0 [pid 5207] mkdir("./bus", 0777) = 0 [pid 5207] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5207] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5207] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5207] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5207] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5207] exit_group(0) = ? [pid 5207] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 71.697197][ T5207] loop0: detected capacity change from 0 to 512 [ 71.723386][ T5207] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/45/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/bus") = 0 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5210 attached [pid 5210] set_robust_list(0x5555568a7760, 24 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5210 [pid 5210] <... set_robust_list resumed>) = 0 [pid 5210] chdir("./46") = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4) = 4 [pid 5210] close(3) = 0 [pid 5210] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5210] memfd_create("syzkaller", 0) = 3 [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5210] munmap(0x7f51c2093000, 138412032) = 0 [pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5210] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5210] close(3) = 0 [pid 5210] mkdir("./bus", 0777) = 0 [ 71.905595][ T5210] loop0: detected capacity change from 0 to 512 [pid 5210] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5210] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5210] chdir("./bus") = 0 [pid 5210] ioctl(4, LOOP_CLR_FD) = 0 [pid 5210] close(4) = 0 [pid 5210] mkdir("./bus", 0777) = 0 [pid 5210] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5210] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 71.943465][ T5210] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/46/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5210] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5210] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5210] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5210] exit_group(0) = ? [pid 5210] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/bus") = 0 umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5213 attached , child_tidptr=0x5555568a7750) = 5213 [pid 5213] set_robust_list(0x5555568a7760, 24) = 0 [pid 5213] chdir("./47") = 0 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5213] write(3, "1000", 4) = 4 [pid 5213] close(3) = 0 [pid 5213] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5213] memfd_create("syzkaller", 0) = 3 [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5213] munmap(0x7f51c2093000, 138412032) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5213] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5213] close(3) = 0 [pid 5213] mkdir("./bus", 0777) = 0 [pid 5213] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5213] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5213] chdir("./bus") = 0 [pid 5213] ioctl(4, LOOP_CLR_FD) = 0 [pid 5213] close(4) = 0 [pid 5213] mkdir("./bus", 0777) = 0 [pid 5213] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5213] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5213] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5213] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5213] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5213] exit_group(0) = ? [pid 5213] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 [ 72.194961][ T5213] loop0: detected capacity change from 0 to 512 [ 72.223234][ T5213] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/47/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/bus") = 0 umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5216 attached , child_tidptr=0x5555568a7750) = 5216 [pid 5216] set_robust_list(0x5555568a7760, 24) = 0 [pid 5216] chdir("./48") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5216] munmap(0x7f51c2093000, 138412032) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5216] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5216] close(3) = 0 [pid 5216] mkdir("./bus", 0777) = 0 [pid 5216] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5216] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5216] chdir("./bus") = 0 [pid 5216] ioctl(4, LOOP_CLR_FD) = 0 [pid 5216] close(4) = 0 [ 72.456674][ T5216] loop0: detected capacity change from 0 to 512 [ 72.493184][ T5216] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/48/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5216] mkdir("./bus", 0777) = 0 [pid 5216] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5216] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5216] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5216] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5216] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5216] exit_group(0) = ? [pid 5216] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/bus") = 0 umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5219 attached , child_tidptr=0x5555568a7750) = 5219 [pid 5219] set_robust_list(0x5555568a7760, 24) = 0 [pid 5219] chdir("./49") = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5219] memfd_create("syzkaller", 0) = 3 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5219] munmap(0x7f51c2093000, 138412032) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5219] close(3) = 0 [pid 5219] mkdir("./bus", 0777) = 0 [pid 5219] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5219] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5219] chdir("./bus") = 0 [pid 5219] ioctl(4, LOOP_CLR_FD) = 0 [pid 5219] close(4) = 0 [pid 5219] mkdir("./bus", 0777) = 0 [pid 5219] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5219] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5219] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5219] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5219] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5219] exit_group(0) = ? [pid 5219] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 72.723424][ T5219] loop0: detected capacity change from 0 to 512 [ 72.743435][ T5219] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/49/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/bus") = 0 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568a7750) = 5222 ./strace-static-x86_64: Process 5222 attached [pid 5222] set_robust_list(0x5555568a7760, 24) = 0 [pid 5222] chdir("./50") = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5222] setpgid(0, 0) = 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3) = 0 [pid 5222] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5222] memfd_create("syzkaller", 0) = 3 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5222] munmap(0x7f51c2093000, 138412032) = 0 [pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5222] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5222] close(3) = 0 [pid 5222] mkdir("./bus", 0777) = 0 [pid 5222] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5222] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5222] chdir("./bus") = 0 [pid 5222] ioctl(4, LOOP_CLR_FD) = 0 [pid 5222] close(4) = 0 [pid 5222] mkdir("./bus", 0777) = 0 [pid 5222] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5222] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5222] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5222] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5222] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5222] exit_group(0) = ? [pid 5222] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 [ 72.950427][ T5222] loop0: detected capacity change from 0 to 512 [ 72.972944][ T5222] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/50/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/bus") = 0 umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5225 attached , child_tidptr=0x5555568a7750) = 5225 [pid 5225] set_robust_list(0x5555568a7760, 24) = 0 [pid 5225] chdir("./51") = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5225] memfd_create("syzkaller", 0) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5225] munmap(0x7f51c2093000, 138412032) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5225] close(3) = 0 [pid 5225] mkdir("./bus", 0777) = 0 [pid 5225] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5225] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./bus") = 0 [pid 5225] ioctl(4, LOOP_CLR_FD) = 0 [pid 5225] close(4) = 0 [pid 5225] mkdir("./bus", 0777) = 0 [pid 5225] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5225] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5225] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5225] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5225] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5225] exit_group(0) = ? [pid 5225] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 73.107614][ T5225] loop0: detected capacity change from 0 to 512 [ 73.123694][ T5225] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/51/bus supports timestamps until 2038-01-19 (0x7fffffff) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/bus") = 0 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5228 attached , child_tidptr=0x5555568a7750) = 5228 [pid 5228] set_robust_list(0x5555568a7760, 24) = 0 [pid 5228] chdir("./52") = 0 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5228] setpgid(0, 0) = 0 [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5228] write(3, "1000", 4) = 4 [pid 5228] close(3) = 0 [pid 5228] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5228] memfd_create("syzkaller", 0) = 3 [pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5228] munmap(0x7f51c2093000, 138412032) = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5228] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5228] close(3) = 0 [pid 5228] mkdir("./bus", 0777) = 0 [pid 5228] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5228] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5228] chdir("./bus") = 0 [pid 5228] ioctl(4, LOOP_CLR_FD) = 0 [pid 5228] close(4) = 0 [pid 5228] mkdir("./bus", 0777) = 0 [pid 5228] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5228] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 73.410344][ T5228] loop0: detected capacity change from 0 to 512 [ 73.433394][ T5228] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/52/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5228] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5228] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5228] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5228] exit_group(0) = ? [pid 5228] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/bus") = 0 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5231 attached , child_tidptr=0x5555568a7750) = 5231 [pid 5231] set_robust_list(0x5555568a7760, 24) = 0 [pid 5231] chdir("./53") = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5231] memfd_create("syzkaller", 0) = 3 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5231] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5231] munmap(0x7f51c2093000, 138412032) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5231] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5231] close(3) = 0 [pid 5231] mkdir("./bus", 0777) = 0 [pid 5231] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5231] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] chdir("./bus") = 0 [pid 5231] ioctl(4, LOOP_CLR_FD) = 0 [pid 5231] close(4) = 0 [pid 5231] mkdir("./bus", 0777) = 0 [pid 5231] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5231] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5231] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5231] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5231] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [ 73.669910][ T5231] loop0: detected capacity change from 0 to 512 [ 73.693479][ T5231] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/53/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5231] exit_group(0) = ? [pid 5231] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/bus") = 0 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5234 attached , child_tidptr=0x5555568a7750) = 5234 [pid 5234] set_robust_list(0x5555568a7760, 24) = 0 [pid 5234] chdir("./54") = 0 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5234] munmap(0x7f51c2093000, 138412032) = 0 [pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5234] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5234] close(3) = 0 [pid 5234] mkdir("./bus", 0777) = 0 [pid 5234] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5234] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5234] chdir("./bus") = 0 [pid 5234] ioctl(4, LOOP_CLR_FD) = 0 [pid 5234] close(4) = 0 [pid 5234] mkdir("./bus", 0777) = 0 [pid 5234] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5234] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 73.974401][ T5234] loop0: detected capacity change from 0 to 512 [ 73.993328][ T5234] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/54/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5234] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5234] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5234] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5234] exit_group(0) = ? [pid 5234] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/bus") = 0 umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5237 attached , child_tidptr=0x5555568a7750) = 5237 [pid 5237] set_robust_list(0x5555568a7760, 24) = 0 [pid 5237] chdir("./55") = 0 [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] setpgid(0, 0) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5237] close(3) = 0 [pid 5237] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5237] memfd_create("syzkaller", 0) = 3 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5237] munmap(0x7f51c2093000, 138412032) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5237] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5237] close(3) = 0 [pid 5237] mkdir("./bus", 0777) = 0 [pid 5237] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5237] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5237] chdir("./bus") = 0 [pid 5237] ioctl(4, LOOP_CLR_FD) = 0 [pid 5237] close(4) = 0 [pid 5237] mkdir("./bus", 0777) = 0 [pid 5237] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5237] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 74.208407][ T5237] loop0: detected capacity change from 0 to 512 [ 74.233537][ T5237] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/55/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5237] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5237] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5237] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5237] exit_group(0) = ? [pid 5237] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/bus") = 0 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5240 attached [pid 5240] set_robust_list(0x5555568a7760, 24) = 0 [pid 5240] chdir("./56") = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5240 [pid 5240] <... setpgid resumed>) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5240] write(3, "1000", 4) = 4 [pid 5240] close(3) = 0 [pid 5240] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5240] memfd_create("syzkaller", 0) = 3 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5240] munmap(0x7f51c2093000, 138412032) = 0 [pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5240] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5240] close(3) = 0 [pid 5240] mkdir("./bus", 0777) = 0 [pid 5240] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5240] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5240] chdir("./bus") = 0 [pid 5240] ioctl(4, LOOP_CLR_FD) = 0 [pid 5240] close(4) = 0 [ 74.389789][ T5240] loop0: detected capacity change from 0 to 512 [ 74.423420][ T5240] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/56/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5240] mkdir("./bus", 0777) = 0 [pid 5240] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5240] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5240] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5240] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5240] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5240] exit_group(0) = ? [pid 5240] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/bus") = 0 umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5243 attached , child_tidptr=0x5555568a7750) = 5243 [pid 5243] set_robust_list(0x5555568a7760, 24) = 0 [pid 5243] chdir("./57") = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5243] munmap(0x7f51c2093000, 138412032) = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5243] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5243] close(3) = 0 [pid 5243] mkdir("./bus", 0777) = 0 [pid 5243] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5243] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5243] chdir("./bus") = 0 [pid 5243] ioctl(4, LOOP_CLR_FD) = 0 [pid 5243] close(4) = 0 [pid 5243] mkdir("./bus", 0777) = 0 [pid 5243] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5243] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 74.692184][ T5243] loop0: detected capacity change from 0 to 512 [ 74.723148][ T5243] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/57/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5243] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5243] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5243] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5243] exit_group(0) = ? [pid 5243] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/bus") = 0 umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5246 attached [pid 5246] set_robust_list(0x5555568a7760, 24) = 0 [pid 5246] chdir("./58") = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5246] setpgid(0, 0 [pid 5066] <... clone resumed>, child_tidptr=0x5555568a7750) = 5246 [pid 5246] <... setpgid resumed>) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5246] write(3, "1000", 4) = 4 [pid 5246] close(3) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5246] memfd_create("syzkaller", 0) = 3 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5246] munmap(0x7f51c2093000, 138412032) = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5246] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5246] close(3) = 0 [pid 5246] mkdir("./bus", 0777) = 0 [pid 5246] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5246] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5246] chdir("./bus") = 0 [pid 5246] ioctl(4, LOOP_CLR_FD) = 0 [pid 5246] close(4) = 0 [ 74.927157][ T5246] loop0: detected capacity change from 0 to 512 [ 74.963787][ T5246] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/58/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5246] mkdir("./bus", 0777) = 0 [pid 5246] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5246] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5246] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5246] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5246] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5246] exit_group(0) = ? [pid 5246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/bus") = 0 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./58") = 0 mkdir("./59", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5250 attached , child_tidptr=0x5555568a7750) = 5250 [pid 5250] set_robust_list(0x5555568a7760, 24) = 0 [pid 5250] chdir("./59") = 0 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5250] setpgid(0, 0) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5250] write(3, "1000", 4) = 4 [pid 5250] close(3) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5250] memfd_create("syzkaller", 0) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5250] munmap(0x7f51c2093000, 138412032) = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5250] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5250] close(3) = 0 [pid 5250] mkdir("./bus", 0777) = 0 [pid 5250] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5250] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] chdir("./bus") = 0 [pid 5250] ioctl(4, LOOP_CLR_FD) = 0 [pid 5250] close(4) = 0 [pid 5250] mkdir("./bus", 0777) = 0 [pid 5250] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 75.166087][ T5250] loop0: detected capacity change from 0 to 512 [ 75.193181][ T5250] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/59/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5250] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5250] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5250] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5250] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0 [pid 5250] exit_group(0) = ? [pid 5250] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555568a87f0 /* 4 entries */, 32768) = 104 umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555568b0830 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555568b0830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/bus") = 0 umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 getdents64(3, 0x5555568a87f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./59") = 0 mkdir("./60", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5253 attached , child_tidptr=0x5555568a7750) = 5253 [pid 5253] set_robust_list(0x5555568a7760, 24) = 0 [pid 5253] chdir("./60") = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f51c2093000 [pid 5253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5253] munmap(0x7f51c2093000, 138412032) = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5253] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5253] close(3) = 0 [pid 5253] mkdir("./bus", 0777) = 0 [pid 5253] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5253] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5253] chdir("./bus") = 0 [pid 5253] ioctl(4, LOOP_CLR_FD) = 0 [pid 5253] close(4) = 0 [pid 5253] mkdir("./bus", 0777) = 0 [pid 5253] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5253] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5253] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5253] openat(AT_FDCWD, "pids.current", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 75.416845][ T5253] loop0: detected capacity change from 0 to 512 [ 75.443244][ T5253] ext4 filesystem being mounted at /root/syzkaller.8G1VJM/60/bus supports timestamps until 2038-01-19 (0x7fffffff) [ 75.489774][ T5253] ------------[ cut here ]------------ [ 75.495241][ T5253] Looking for class "&ei->i_data_sem" with key __key.0, but found a different class "&ei->i_data_sem" with the same key [ 75.507936][ T5253] WARNING: CPU: 0 PID: 5253 at kernel/locking/lockdep.c:932 look_up_lock_class+0x127/0x130 [ 75.517905][ T5253] Modules linked in: [ 75.521775][ T5253] CPU: 0 PID: 5253 Comm: syz-executor412 Not tainted 6.7.0-rc6-syzkaller-00229-g5414aea7b750 #0 [ 75.532161][ T5253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 75.542202][ T5253] RIP: 0010:look_up_lock_class+0x127/0x130 [ 75.548010][ T5253] Code: c7 c7 a0 ad cc 8a e8 e8 c5 cd f6 90 0f 0b 90 90 90 31 db eb c2 c6 05 45 65 83 04 01 90 48 c7 c7 c0 b0 cc 8a e8 ca c5 cd f6 90 <0f> 0b 90 90 e9 6a ff ff ff 53 48 39 77 10 48 89 fb 74 51 66 83 7f [ 75.567617][ T5253] RSP: 0018:ffffc900047af8d0 EFLAGS: 00010082 [ 75.573661][ T5253] RAX: 0000000000000000 RBX: ffffffff91f6e610 RCX: ffffffff814db519 [ 75.581699][ T5253] RDX: ffff888025461dc0 RSI: ffffffff814db526 RDI: 0000000000000001 [ 75.589745][ T5253] RBP: ffffffff928d22a1 R08: 0000000000000001 R09: 0000000000000000 [ 75.597708][ T5253] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880766a8c88 [ 75.605661][ T5253] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff9280a5e0 [ 75.613614][ T5253] FS: 00005555568a7480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 75.622524][ T5253] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.629089][ T5253] CR2: 00007f51ca54a0f8 CR3: 000000007d805000 CR4: 0000000000350ef0 [ 75.637049][ T5253] Call Trace: [ 75.640313][ T5253] [ 75.643311][ T5253] ? show_regs+0x8f/0xa0 [ 75.647540][ T5253] ? __warn+0xe6/0x390 [ 75.651589][ T5253] ? __wake_up_klogd.part.0+0x99/0xf0 [ 75.656941][ T5253] ? look_up_lock_class+0x127/0x130 [ 75.662136][ T5253] ? report_bug+0x3bc/0x580 [ 75.666623][ T5253] ? handle_bug+0x3d/0x70 [ 75.670935][ T5253] ? exc_invalid_op+0x17/0x40 [ 75.675600][ T5253] ? asm_exc_invalid_op+0x1a/0x20 [ 75.680604][ T5253] ? __warn_printk+0x199/0x350 [ 75.685350][ T5253] ? __warn_printk+0x1a6/0x350 [ 75.690105][ T5253] ? look_up_lock_class+0x127/0x130 [ 75.695290][ T5253] ? print_usage_bug.part.0+0x550/0x550 [ 75.700823][ T5253] register_lock_class+0xb1/0x1220 [ 75.705929][ T5253] ? print_usage_bug.part.0+0x550/0x550 [ 75.711494][ T5253] ? register_lock_class+0xb1/0x1220 [ 75.716844][ T5253] ? is_dynamic_key+0x200/0x200 [ 75.721674][ T5253] ? is_dynamic_key+0x200/0x200 [ 75.726502][ T5253] ? is_dynamic_key+0x200/0x200 [ 75.731338][ T5253] __lock_acquire+0x112/0x3b20 [ 75.736096][ T5253] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.742059][ T5253] ? __down_write_common+0x17a/0x1400 [ 75.747406][ T5253] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.753366][ T5253] lock_acquire+0x1ae/0x520 [ 75.757854][ T5253] ? ext4_double_down_write_data_sem+0x67/0x80 [ 75.763997][ T5253] ? lock_sync+0x190/0x190 [ 75.768397][ T5253] ? preempt_count_sub+0x160/0x160 [ 75.773483][ T5253] ? preempt_count_sub+0x160/0x160 [ 75.778572][ T5253] down_write_nested+0x3d/0x50 [ 75.783314][ T5253] ? ext4_double_down_write_data_sem+0x67/0x80 [ 75.789451][ T5253] ext4_double_down_write_data_sem+0x67/0x80 [ 75.795415][ T5253] __ext4_ioctl+0x163e/0x4570 [ 75.800078][ T5253] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 75.805861][ T5253] ? ext4_force_shutdown+0x5d0/0x5d0 [ 75.811125][ T5253] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 75.816995][ T5253] ? do_vfs_ioctl+0x379/0x1920 [ 75.821750][ T5253] ? vfs_fileattr_set+0xbf0/0xbf0 [ 75.826802][ T5253] ? ptrace_notify+0xf4/0x130 [ 75.831459][ T5253] ? bpf_lsm_file_ioctl+0x9/0x10 [ 75.836374][ T5253] ? ext4_fileattr_set+0x17a0/0x17a0 [ 75.841648][ T5253] __x64_sys_ioctl+0x18f/0x210 [ 75.846398][ T5253] do_syscall_64+0x40/0x110 [ 75.850886][ T5253] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 75.856766][ T5253] RIP: 0033:0x7f51ca4d2869 [ 75.861162][ T5253] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 75.880747][ T5253] RSP: 002b:00007ffe2ce65438 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.889143][ T5253] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f51ca4d2869 [ 75.897114][ T5253] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 75.905322][ T5253] RBP: 0000000000000000 R08: 00007ffe2ce6546c R09: 00007ffe2ce6546c [ 75.913283][ T5253] R10: 00007ffe2ce6546c R11: 0000000000000246 R12: 00007ffe2ce6546c [ 75.921256][ T5253] R13: 000000000000003c R14: 431bde82d7b634db R15: 00007ffe2ce654a0 [ 75.929212][ T5253] [ 75.932212][ T5253] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 75.939466][ T5253] CPU: 0 PID: 5253 Comm: syz-executor412 Not tainted 6.7.0-rc6-syzkaller-00229-g5414aea7b750 #0 [ 75.949853][ T5253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 75.959904][ T5253] Call Trace: [ 75.963165][ T5253] [ 75.966073][ T5253] dump_stack_lvl+0xd9/0x1b0 [ 75.970657][ T5253] panic+0x6dc/0x790 [ 75.974548][ T5253] ? panic_smp_self_stop+0xa0/0xa0 [ 75.979632][ T5253] ? show_trace_log_lvl+0x363/0x4f0 [ 75.984812][ T5253] ? check_panic_on_warn+0x1f/0xb0 [ 75.989902][ T5253] ? look_up_lock_class+0x127/0x130 [ 75.995077][ T5253] check_panic_on_warn+0xab/0xb0 [ 75.999993][ T5253] __warn+0xf2/0x390 [ 76.003874][ T5253] ? __wake_up_klogd.part.0+0x99/0xf0 [ 76.009231][ T5253] ? look_up_lock_class+0x127/0x130 [ 76.014492][ T5253] report_bug+0x3bc/0x580 [ 76.018802][ T5253] handle_bug+0x3d/0x70 [ 76.022938][ T5253] exc_invalid_op+0x17/0x40 [ 76.027425][ T5253] asm_exc_invalid_op+0x1a/0x20 [ 76.032257][ T5253] RIP: 0010:look_up_lock_class+0x127/0x130 [ 76.038039][ T5253] Code: c7 c7 a0 ad cc 8a e8 e8 c5 cd f6 90 0f 0b 90 90 90 31 db eb c2 c6 05 45 65 83 04 01 90 48 c7 c7 c0 b0 cc 8a e8 ca c5 cd f6 90 <0f> 0b 90 90 e9 6a ff ff ff 53 48 39 77 10 48 89 fb 74 51 66 83 7f [ 76.057632][ T5253] RSP: 0018:ffffc900047af8d0 EFLAGS: 00010082 [ 76.063677][ T5253] RAX: 0000000000000000 RBX: ffffffff91f6e610 RCX: ffffffff814db519 [ 76.071625][ T5253] RDX: ffff888025461dc0 RSI: ffffffff814db526 RDI: 0000000000000001 [ 76.079573][ T5253] RBP: ffffffff928d22a1 R08: 0000000000000001 R09: 0000000000000000 [ 76.087522][ T5253] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880766a8c88 [ 76.095558][ T5253] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff9280a5e0 [ 76.103512][ T5253] ? __warn_printk+0x199/0x350 [ 76.108261][ T5253] ? __warn_printk+0x1a6/0x350 [ 76.113010][ T5253] ? print_usage_bug.part.0+0x550/0x550 [ 76.118542][ T5253] register_lock_class+0xb1/0x1220 [ 76.123640][ T5253] ? print_usage_bug.part.0+0x550/0x550 [ 76.129167][ T5253] ? register_lock_class+0xb1/0x1220 [ 76.134520][ T5253] ? is_dynamic_key+0x200/0x200 [ 76.139352][ T5253] ? is_dynamic_key+0x200/0x200 [ 76.144208][ T5253] ? is_dynamic_key+0x200/0x200 [ 76.149051][ T5253] __lock_acquire+0x112/0x3b20 [ 76.153819][ T5253] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 76.159801][ T5253] ? __down_write_common+0x17a/0x1400 [ 76.165163][ T5253] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 76.171205][ T5253] lock_acquire+0x1ae/0x520 [ 76.175691][ T5253] ? ext4_double_down_write_data_sem+0x67/0x80 [ 76.181825][ T5253] ? lock_sync+0x190/0x190 [ 76.186224][ T5253] ? preempt_count_sub+0x160/0x160 [ 76.191312][ T5253] ? preempt_count_sub+0x160/0x160 [ 76.196401][ T5253] down_write_nested+0x3d/0x50 [ 76.201236][ T5253] ? ext4_double_down_write_data_sem+0x67/0x80 [ 76.207394][ T5253] ext4_double_down_write_data_sem+0x67/0x80 [ 76.213363][ T5253] __ext4_ioctl+0x163e/0x4570 [ 76.218022][ T5253] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 76.223808][ T5253] ? ext4_force_shutdown+0x5d0/0x5d0 [ 76.229072][ T5253] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 76.234948][ T5253] ? do_vfs_ioctl+0x379/0x1920 [ 76.239700][ T5253] ? vfs_fileattr_set+0xbf0/0xbf0 [ 76.244729][ T5253] ? ptrace_notify+0xf4/0x130 [ 76.249391][ T5253] ? bpf_lsm_file_ioctl+0x9/0x10 [ 76.254305][ T5253] ? ext4_fileattr_set+0x17a0/0x17a0 [ 76.259571][ T5253] __x64_sys_ioctl+0x18f/0x210 [ 76.264319][ T5253] do_syscall_64+0x40/0x110 [ 76.268807][ T5253] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 76.274680][ T5253] RIP: 0033:0x7f51ca4d2869 [ 76.279070][ T5253] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 76.298916][ T5253] RSP: 002b:00007ffe2ce65438 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 76.307312][ T5253] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f51ca4d2869 [ 76.315264][ T5253] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 76.323212][ T5253] RBP: 0000000000000000 R08: 00007ffe2ce6546c R09: 00007ffe2ce6546c [ 76.331167][ T5253] R10: 00007ffe2ce6546c R11: 0000000000000246 R12: 00007ffe2ce6546c [ 76.339164][ T5253] R13: 000000000000003c R14: 431bde82d7b634db R15: 00007ffe2ce654a0 [ 76.347150][ T5253] [ 76.350405][ T5253] Kernel Offset: disabled [ 76.354708][ T5253] Rebooting in 86400 seconds.. [pid 5253] ioctl(4, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0