./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1817883195 <...> Warning: Permanently added '10.128.0.126' (ED25519) to the list of known hosts. execve("./syz-executor1817883195", ["./syz-executor1817883195"], 0x7ffd194a4a50 /* 10 vars */) = 0 brk(NULL) = 0x555555aef000 brk(0x555555aefe00) = 0x555555aefe00 arch_prctl(ARCH_SET_FS, 0x555555aef480) = 0 set_tid_address(0x555555aef750) = 5057 set_robust_list(0x555555aef760, 24) = 0 rseq(0x555555aefda0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1817883195", 4096) = 28 getrandom("\x07\x04\xf7\xc6\x34\xe8\x0a\xa7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555aefe00 brk(0x555555b10e00) = 0x555555b10e00 brk(0x555555b11000) = 0x555555b11000 mprotect(0x7fe967c33000, 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=0x7fe967b88940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fe967b916f0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fe967b88940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fe967b916f0}, NULL, 8) = 0 mkdir("./syzkaller.grIGLP", 0700) = 0 chmod("./syzkaller.grIGLP", 0777) = 0 chdir("./syzkaller.grIGLP") = 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 5058 attached , child_tidptr=0x555555aef750) = 5058 [pid 5058] set_robust_list(0x555555aef760, 24) = 0 [pid 5058] chdir("./0") = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] setpgid(0, 0) = 0 [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5058] close(3) = 0 [pid 5058] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5058] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5058] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5058] dup3(4, 3, 0) = 3 [pid 5058] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5058] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5058] memfd_create("syzkaller", 0) = 6 [pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5058] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5058] munmap(0x7fe95f600000, 138412032) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5058] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5058] close(6) = 0 [pid 5058] close(7) = 0 [pid 5058] mkdir("./bus", 0777) = 0 [ 56.114656][ T5058] loop0: detected capacity change from 0 to 512 [pid 5058] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5058] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5058] chdir("./bus") = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5058] mkdir("./bus", 0777) = 0 [pid 5058] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5058] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5058] 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 5058] exit_group(0) = ? [pid 5058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5058, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./0/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/cpuset.effective_cpus") = 0 [ 56.160513][ T5058] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 56.173353][ T5058] ext4 filesystem being mounted at /root/syzkaller.grIGLP/0/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./0/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 [ 56.225439][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5063 attached , child_tidptr=0x555555aef750) = 5063 [pid 5063] set_robust_list(0x555555aef760, 24) = 0 [pid 5063] chdir("./1") = 0 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5063] setpgid(0, 0) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1000", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5063] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5063] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5063] dup3(4, 3, 0) = 3 [pid 5063] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5063] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5063] memfd_create("syzkaller", 0) = 6 [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5063] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5063] munmap(0x7fe95f600000, 138412032) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5063] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5063] close(6) = 0 [pid 5063] close(7) = 0 [pid 5063] mkdir("./bus", 0777) = 0 [ 56.409880][ T5063] loop0: detected capacity change from 0 to 512 [pid 5063] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5063] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5063] chdir("./bus") = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5063] mkdir("./bus", 0777) = 0 [pid 5063] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 56.457572][ T5063] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 56.470396][ T5063] ext4 filesystem being mounted at /root/syzkaller.grIGLP/1/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5063] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5063] 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 5063] exit_group(0) = ? [pid 5063] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./1/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./1/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 56.556554][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5066 attached , child_tidptr=0x555555aef750) = 5066 [pid 5066] set_robust_list(0x555555aef760, 24) = 0 [pid 5066] chdir("./2") = 0 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] setpgid(0, 0) = 0 [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5066] write(3, "1000", 4) = 4 [pid 5066] close(3) = 0 [pid 5066] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5066] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5066] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5066] dup3(4, 3, 0) = 3 [pid 5066] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5066] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5066] memfd_create("syzkaller", 0) = 6 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5066] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5066] munmap(0x7fe95f600000, 138412032) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5066] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5066] close(6) = 0 [pid 5066] close(7) = 0 [pid 5066] mkdir("./bus", 0777) = 0 [ 56.758013][ T5066] loop0: detected capacity change from 0 to 512 [pid 5066] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5066] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5066] chdir("./bus") = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5066] mkdir("./bus", 0777) = 0 [pid 5066] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5066] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 56.797857][ T5066] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 56.810561][ T5066] ext4 filesystem being mounted at /root/syzkaller.grIGLP/2/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5066] 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 5066] exit_group(0) = ? [pid 5066] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./2/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./2/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 56.885779][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5069 attached , child_tidptr=0x555555aef750) = 5069 [pid 5069] set_robust_list(0x555555aef760, 24) = 0 [pid 5069] chdir("./3") = 0 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5069] setpgid(0, 0) = 0 [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] write(3, "1000", 4) = 4 [pid 5069] close(3) = 0 [pid 5069] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5069] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5069] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5069] dup3(4, 3, 0) = 3 [pid 5069] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5069] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5069] memfd_create("syzkaller", 0) = 6 [pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5069] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5069] munmap(0x7fe95f600000, 138412032) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5069] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5069] close(6) = 0 [pid 5069] close(7) = 0 [pid 5069] mkdir("./bus", 0777) = 0 [ 57.032117][ T5069] loop0: detected capacity change from 0 to 512 [ 57.058312][ T5069] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5069] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5069] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5069] chdir("./bus") = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5069] mkdir("./bus", 0777) = 0 [pid 5069] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5069] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 57.070887][ T5069] ext4 filesystem being mounted at /root/syzkaller.grIGLP/3/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5069] 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 5069] exit_group(0) = ? [pid 5069] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./3/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./3/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 57.154220][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5072 attached [pid 5072] set_robust_list(0x555555aef760, 24) = 0 [pid 5072] chdir("./4" [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5072 [pid 5072] <... chdir resumed>) = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5072] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5072] dup3(4, 3, 0) = 3 [pid 5072] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5072] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5072] memfd_create("syzkaller", 0) = 6 [pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5072] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5072] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5072] close(6) = 0 [pid 5072] close(7) = 0 [pid 5072] mkdir("./bus", 0777) = 0 [ 57.299277][ T5072] loop0: detected capacity change from 0 to 512 [pid 5072] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5072] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5072] chdir("./bus") = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=5 /* 0.05 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 [ 57.338096][ T5072] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 57.350872][ T5072] ext4 filesystem being mounted at /root/syzkaller.grIGLP/4/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./4/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/cpuset.effective_cpus") = 0 umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./4/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 [ 57.437507][ T5057] 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 5075 attached , child_tidptr=0x555555aef750) = 5075 [pid 5075] set_robust_list(0x555555aef760, 24) = 0 [pid 5075] chdir("./5") = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5075] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5075] dup3(4, 3, 0) = 3 [pid 5075] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5075] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5075] memfd_create("syzkaller", 0) = 6 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5075] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5075] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5075] close(6) = 0 [pid 5075] close(7) = 0 [pid 5075] mkdir("./bus", 0777) = 0 [ 57.605092][ T5075] loop0: detected capacity change from 0 to 512 [pid 5075] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5075] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5075] chdir("./bus") = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [ 57.657740][ T5075] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 57.670467][ T5075] ext4 filesystem being mounted at /root/syzkaller.grIGLP/5/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5075] exit_group(0) = ? [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=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./5/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 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 umount2("./5/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 57.783168][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5078 attached , child_tidptr=0x555555aef750) = 5078 [pid 5078] set_robust_list(0x555555aef760, 24) = 0 [pid 5078] chdir("./6") = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5078] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5078] dup3(4, 3, 0) = 3 [pid 5078] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5078] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5078] memfd_create("syzkaller", 0) = 6 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5078] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5078] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5078] close(6) = 0 [pid 5078] close(7) = 0 [pid 5078] mkdir("./bus", 0777) = 0 [ 57.947852][ T5078] loop0: detected capacity change from 0 to 512 [pid 5078] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5078] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5078] chdir("./bus") = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [ 57.988190][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 58.000785][ T5078] ext4 filesystem being mounted at /root/syzkaller.grIGLP/6/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] 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("./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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./6/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./6/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 58.068245][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached , child_tidptr=0x555555aef750) = 5081 [pid 5081] set_robust_list(0x555555aef760, 24) = 0 [pid 5081] chdir("./7") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5081] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5081] dup3(4, 3, 0) = 3 [pid 5081] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5081] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5081] memfd_create("syzkaller", 0) = 6 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5081] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5081] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5081] close(6) = 0 [pid 5081] close(7) = 0 [pid 5081] mkdir("./bus", 0777) = 0 [ 58.257328][ T5081] loop0: detected capacity change from 0 to 512 [pid 5081] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5081] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5081] chdir("./bus") = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5081] mkdir("./bus", 0777) = 0 [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] 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=5 /* 0.05 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 [ 58.307929][ T5081] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 58.320702][ T5081] ext4 filesystem being mounted at /root/syzkaller.grIGLP/7/bus supports timestamps until 2038-01-19 (0x7fffffff) getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./7/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 unlink("./7/binderfs") = 0 umount2("./7/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 58.376572][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5084 attached , child_tidptr=0x555555aef750) = 5084 [pid 5084] set_robust_list(0x555555aef760, 24) = 0 [pid 5084] chdir("./8") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5084] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5084] dup3(4, 3, 0) = 3 [pid 5084] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5084] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5084] memfd_create("syzkaller", 0) = 6 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5084] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5084] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5084] close(6) = 0 [pid 5084] close(7) = 0 [pid 5084] mkdir("./bus", 0777) = 0 [ 58.538402][ T5084] loop0: detected capacity change from 0 to 512 [pid 5084] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5084] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5084] chdir("./bus") = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [ 58.577831][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 58.590457][ T5084] ext4 filesystem being mounted at /root/syzkaller.grIGLP/8/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] 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=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./8/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/cpuset.effective_cpus") = 0 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 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./8/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 58.675840][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached , child_tidptr=0x555555aef750) = 5087 [pid 5087] set_robust_list(0x555555aef760, 24) = 0 [pid 5087] chdir("./9") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5087] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5087] dup3(4, 3, 0) = 3 [pid 5087] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5087] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5087] memfd_create("syzkaller", 0) = 6 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5087] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5087] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5087] close(6) = 0 [pid 5087] close(7) = 0 [pid 5087] mkdir("./bus", 0777) = 0 [ 58.856327][ T5087] loop0: detected capacity change from 0 to 512 [pid 5087] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5087] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5087] chdir("./bus") = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [ 58.907919][ T5087] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 58.920561][ T5087] ext4 filesystem being mounted at /root/syzkaller.grIGLP/9/bus supports timestamps until 2038-01-19 (0x7fffffff) [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 [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("./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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./9/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/bus") = 0 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 umount2("./9/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 59.039729][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5091 attached , child_tidptr=0x555555aef750) = 5091 [pid 5091] set_robust_list(0x555555aef760, 24) = 0 [pid 5091] chdir("./10") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5091] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5091] dup3(4, 3, 0) = 3 [pid 5091] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5091] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5091] memfd_create("syzkaller", 0) = 6 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5091] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5091] munmap(0x7fe95f600000, 138412032) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5091] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5091] close(6) = 0 [pid 5091] close(7) = 0 [pid 5091] mkdir("./bus", 0777) = 0 [ 59.201315][ T5091] loop0: detected capacity change from 0 to 512 [pid 5091] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5091] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5091] chdir("./bus") = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5091] mkdir("./bus", 0777) = 0 [pid 5091] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5091] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 59.247591][ T5091] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 59.260185][ T5091] ext4 filesystem being mounted at /root/syzkaller.grIGLP/10/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5091] 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 5091] exit_group(0) = ? [pid 5091] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./10/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./10/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 59.341614][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./10/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5094 attached , child_tidptr=0x555555aef750) = 5094 [pid 5094] set_robust_list(0x555555aef760, 24) = 0 [pid 5094] chdir("./11") = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5094] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5094] dup3(4, 3, 0) = 3 [pid 5094] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5094] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5094] memfd_create("syzkaller", 0) = 6 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5094] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5094] munmap(0x7fe95f600000, 138412032) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5094] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5094] close(6) = 0 [pid 5094] close(7) = 0 [pid 5094] mkdir("./bus", 0777) = 0 [ 59.575681][ T5094] loop0: detected capacity change from 0 to 512 [pid 5094] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5094] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5094] chdir("./bus") = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] mkdir("./bus", 0777) = 0 [pid 5094] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5094] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 59.618502][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 59.631120][ T5094] ext4 filesystem being mounted at /root/syzkaller.grIGLP/11/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5094] 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 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./11/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./11/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 59.713775][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555aef750) = 5097 ./strace-static-x86_64: Process 5097 attached [pid 5097] set_robust_list(0x555555aef760, 24) = 0 [pid 5097] chdir("./12") = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5097] setpgid(0, 0) = 0 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5097] write(3, "1000", 4) = 4 [pid 5097] close(3) = 0 [pid 5097] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5097] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5097] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5097] dup3(4, 3, 0) = 3 [pid 5097] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5097] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5097] memfd_create("syzkaller", 0) = 6 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5097] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5097] munmap(0x7fe95f600000, 138412032) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5097] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5097] close(6) = 0 [pid 5097] close(7) = 0 [pid 5097] mkdir("./bus", 0777) = 0 [ 59.887620][ T5097] loop0: detected capacity change from 0 to 512 [pid 5097] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5097] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5097] chdir("./bus") = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5097] mkdir("./bus", 0777) = 0 [pid 5097] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5097] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5097] 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 5097] exit_group(0) = ? [ 59.947718][ T5097] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 59.960454][ T5097] ext4 filesystem being mounted at /root/syzkaller.grIGLP/12/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5097] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./12/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./12/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 60.068108][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5100 attached , child_tidptr=0x555555aef750) = 5100 [pid 5100] set_robust_list(0x555555aef760, 24) = 0 [pid 5100] chdir("./13") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5100] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5100] dup3(4, 3, 0) = 3 [pid 5100] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5100] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5100] memfd_create("syzkaller", 0) = 6 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5100] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5100] munmap(0x7fe95f600000, 138412032) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5100] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5100] close(6) = 0 [pid 5100] close(7) = 0 [pid 5100] mkdir("./bus", 0777) = 0 [ 60.276395][ T5100] loop0: detected capacity change from 0 to 512 [pid 5100] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5100] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5100] chdir("./bus") = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5100] mkdir("./bus", 0777) = 0 [pid 5100] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5100] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5100] 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 5100] exit_group(0) = ? [pid 5100] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 60.327541][ T5100] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 60.340295][ T5100] ext4 filesystem being mounted at /root/syzkaller.grIGLP/13/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./13/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./13/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 60.408920][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5103 attached , child_tidptr=0x555555aef750) = 5103 [pid 5103] set_robust_list(0x555555aef760, 24) = 0 [pid 5103] chdir("./14") = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3) = 0 [pid 5103] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5103] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5103] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5103] dup3(4, 3, 0) = 3 [pid 5103] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5103] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5103] memfd_create("syzkaller", 0) = 6 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5103] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5103] munmap(0x7fe95f600000, 138412032) = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5103] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5103] close(6) = 0 [pid 5103] close(7) = 0 [pid 5103] mkdir("./bus", 0777) = 0 [ 60.585317][ T5103] loop0: detected capacity change from 0 to 512 [ 60.617816][ T5103] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5103] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5103] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5103] chdir("./bus") = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5103] mkdir("./bus", 0777) = 0 [pid 5103] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5103] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5103] 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 5103] exit_group(0) = ? [pid 5103] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./14/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/cpuset.effective_cpus") = 0 [ 60.630457][ T5103] ext4 filesystem being mounted at /root/syzkaller.grIGLP/14/bus supports timestamps until 2038-01-19 (0x7fffffff) 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) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./14/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 60.679481][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5106 attached [pid 5106] set_robust_list(0x555555aef760, 24) = 0 [pid 5106] chdir("./15") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5106 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5106] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5106] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5106] dup3(4, 3, 0) = 3 [pid 5106] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5106] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5106] memfd_create("syzkaller", 0) = 6 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5106] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5106] munmap(0x7fe95f600000, 138412032) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5106] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5106] close(6) = 0 [pid 5106] close(7) = 0 [pid 5106] mkdir("./bus", 0777) = 0 [ 60.851794][ T5106] loop0: detected capacity change from 0 to 512 [pid 5106] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5106] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5106] chdir("./bus") = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 60.908015][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 60.920824][ T5106] ext4 filesystem being mounted at /root/syzkaller.grIGLP/15/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5106] mkdir("./bus", 0777) = 0 [pid 5106] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5106] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5106] 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 5106] exit_group(0) = ? [pid 5106] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./15/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./15/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 61.037072][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5109 attached , child_tidptr=0x555555aef750) = 5109 [pid 5109] set_robust_list(0x555555aef760, 24) = 0 [pid 5109] chdir("./16") = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5109] write(3, "1000", 4) = 4 [pid 5109] close(3) = 0 [pid 5109] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5109] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5109] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5109] dup3(4, 3, 0) = 3 [pid 5109] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5109] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5109] memfd_create("syzkaller", 0) = 6 [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5109] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5109] munmap(0x7fe95f600000, 138412032) = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5109] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5109] close(6) = 0 [pid 5109] close(7) = 0 [pid 5109] mkdir("./bus", 0777) = 0 [ 61.238246][ T5109] loop0: detected capacity change from 0 to 512 [pid 5109] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5109] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5109] chdir("./bus") = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5109] mkdir("./bus", 0777) = 0 [pid 5109] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5109] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5109] 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 5109] exit_group(0) = ? [ 61.297804][ T5109] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 61.310324][ T5109] ext4 filesystem being mounted at /root/syzkaller.grIGLP/16/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5109] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./16/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./16/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 61.386802][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5112 attached , child_tidptr=0x555555aef750) = 5112 [pid 5112] set_robust_list(0x555555aef760, 24) = 0 [pid 5112] chdir("./17") = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5112] setpgid(0, 0) = 0 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5112] write(3, "1000", 4) = 4 [pid 5112] close(3) = 0 [pid 5112] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5112] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5112] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5112] dup3(4, 3, 0) = 3 [pid 5112] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5112] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5112] memfd_create("syzkaller", 0) = 6 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5112] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5112] munmap(0x7fe95f600000, 138412032) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5112] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5112] close(6) = 0 [pid 5112] close(7) = 0 [pid 5112] mkdir("./bus", 0777) = 0 [ 61.578230][ T5112] loop0: detected capacity change from 0 to 512 [pid 5112] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5112] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5112] chdir("./bus") = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5112] mkdir("./bus", 0777) = 0 [pid 5112] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5112] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5112] 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 [ 61.617929][ T5112] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 61.630470][ T5112] ext4 filesystem being mounted at /root/syzkaller.grIGLP/17/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5112] exit_group(0) = ? [pid 5112] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./17/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./17/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 61.732115][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5116 attached , child_tidptr=0x555555aef750) = 5116 [pid 5116] set_robust_list(0x555555aef760, 24) = 0 [pid 5116] chdir("./18") = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5116] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5116] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5116] dup3(4, 3, 0) = 3 [pid 5116] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5116] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5116] memfd_create("syzkaller", 0) = 6 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5116] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5116] munmap(0x7fe95f600000, 138412032) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5116] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5116] close(6) = 0 [pid 5116] close(7) = 0 [pid 5116] mkdir("./bus", 0777) = 0 [ 61.894755][ T5116] loop0: detected capacity change from 0 to 512 [pid 5116] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5116] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5116] chdir("./bus") = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5116] mkdir("./bus", 0777) = 0 [pid 5116] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5116] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 61.947498][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 61.960172][ T5116] ext4 filesystem being mounted at /root/syzkaller.grIGLP/18/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5116] 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 5116] exit_group(0) = ? [pid 5116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./18/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./18/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 62.052512][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5119 attached , child_tidptr=0x555555aef750) = 5119 [pid 5119] set_robust_list(0x555555aef760, 24) = 0 [pid 5119] chdir("./19") = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3) = 0 [pid 5119] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5119] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5119] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5119] dup3(4, 3, 0) = 3 [pid 5119] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5119] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5119] memfd_create("syzkaller", 0) = 6 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5119] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5119] munmap(0x7fe95f600000, 138412032) = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5119] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5119] close(6) = 0 [pid 5119] close(7) = 0 [pid 5119] mkdir("./bus", 0777) = 0 [ 62.210158][ T5119] loop0: detected capacity change from 0 to 512 [ 62.247032][ T5119] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5119] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5119] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5119] chdir("./bus") = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5119] mkdir("./bus", 0777) = 0 [pid 5119] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5119] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5119] 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 5119] exit_group(0) = ? [pid 5119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./19/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/cpuset.effective_cpus") = 0 [ 62.259801][ T5119] ext4 filesystem being mounted at /root/syzkaller.grIGLP/19/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./19/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 62.323787][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5122 attached , child_tidptr=0x555555aef750) = 5122 [pid 5122] set_robust_list(0x555555aef760, 24) = 0 [pid 5122] chdir("./20") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5122] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5122] dup3(4, 3, 0) = 3 [pid 5122] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5122] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5122] memfd_create("syzkaller", 0) = 6 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5122] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5122] munmap(0x7fe95f600000, 138412032) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5122] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5122] close(6) = 0 [pid 5122] close(7) = 0 [pid 5122] mkdir("./bus", 0777) = 0 [ 62.500382][ T5122] loop0: detected capacity change from 0 to 512 [ 62.537563][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5122] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5122] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5122] chdir("./bus") = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5122] mkdir("./bus", 0777) = 0 [pid 5122] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5122] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5122] 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 [ 62.550760][ T5122] ext4 filesystem being mounted at /root/syzkaller.grIGLP/20/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./20/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./20/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 62.673791][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5125 attached , child_tidptr=0x555555aef750) = 5125 [pid 5125] set_robust_list(0x555555aef760, 24) = 0 [pid 5125] chdir("./21") = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0) = 0 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5125] write(3, "1000", 4) = 4 [pid 5125] close(3) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5125] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5125] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5125] dup3(4, 3, 0) = 3 [pid 5125] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5125] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5125] memfd_create("syzkaller", 0) = 6 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5125] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5125] munmap(0x7fe95f600000, 138412032) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5125] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5125] close(6) = 0 [pid 5125] close(7) = 0 [pid 5125] mkdir("./bus", 0777) = 0 [ 62.830720][ T5125] loop0: detected capacity change from 0 to 512 [ 62.859516][ T5125] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5125] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5125] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5125] chdir("./bus") = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5125] mkdir("./bus", 0777) = 0 [pid 5125] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5125] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5125] 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 [ 62.872197][ T5125] ext4 filesystem being mounted at /root/syzkaller.grIGLP/21/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5125] exit_group(0) = ? [pid 5125] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./21/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 unlink("./21/binderfs") = 0 umount2("./21/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 62.945275][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5128 attached [pid 5128] set_robust_list(0x555555aef760, 24 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5128 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5128] chdir("./22") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5128] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5128] dup3(4, 3, 0) = 3 [pid 5128] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5128] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5128] memfd_create("syzkaller", 0) = 6 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5128] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5128] munmap(0x7fe95f600000, 138412032) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5128] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5128] close(6) = 0 [pid 5128] close(7) = 0 [pid 5128] mkdir("./bus", 0777) = 0 [ 63.115644][ T5128] loop0: detected capacity change from 0 to 512 [pid 5128] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5128] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5128] chdir("./bus") = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5128] mkdir("./bus", 0777) = 0 [pid 5128] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5128] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5128] 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 5128] exit_group(0) = ? [ 63.157723][ T5128] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 63.170382][ T5128] ext4 filesystem being mounted at /root/syzkaller.grIGLP/22/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./22/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/cpuset.effective_cpus") = 0 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 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./22/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 63.239441][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5131 attached , child_tidptr=0x555555aef750) = 5131 [pid 5131] set_robust_list(0x555555aef760, 24) = 0 [pid 5131] chdir("./23") = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5131] write(3, "1000", 4) = 4 [pid 5131] close(3) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5131] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5131] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5131] dup3(4, 3, 0) = 3 [pid 5131] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5131] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5131] memfd_create("syzkaller", 0) = 6 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5131] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5131] munmap(0x7fe95f600000, 138412032) = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5131] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5131] close(6) = 0 [pid 5131] close(7) = 0 [pid 5131] mkdir("./bus", 0777) = 0 [ 63.398003][ T5131] loop0: detected capacity change from 0 to 512 [pid 5131] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5131] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5131] chdir("./bus") = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5131] mkdir("./bus", 0777) = 0 [pid 5131] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5131] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5131] 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 [ 63.447712][ T5131] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 63.460378][ T5131] ext4 filesystem being mounted at /root/syzkaller.grIGLP/23/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5131] exit_group(0) = ? [pid 5131] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./23/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./23/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 63.569464][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5134 attached , child_tidptr=0x555555aef750) = 5134 [pid 5134] set_robust_list(0x555555aef760, 24) = 0 [pid 5134] chdir("./24") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5134] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5134] dup3(4, 3, 0) = 3 [pid 5134] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5134] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5134] memfd_create("syzkaller", 0) = 6 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5134] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5134] munmap(0x7fe95f600000, 138412032) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5134] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5134] close(6) = 0 [pid 5134] close(7) = 0 [pid 5134] mkdir("./bus", 0777) = 0 [ 63.770225][ T5134] loop0: detected capacity change from 0 to 512 [pid 5134] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5134] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5134] chdir("./bus") = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5134] mkdir("./bus", 0777) = 0 [pid 5134] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5134] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5134] 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 5134] exit_group(0) = ? [pid 5134] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./24/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/cpuset.effective_cpus") = 0 [ 63.837203][ T5134] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 63.850824][ T5134] ext4 filesystem being mounted at /root/syzkaller.grIGLP/24/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/bus") = 0 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 umount2("./24/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 63.904936][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5137 attached , child_tidptr=0x555555aef750) = 5137 [pid 5137] set_robust_list(0x555555aef760, 24) = 0 [pid 5137] chdir("./25") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5137] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5137] dup3(4, 3, 0) = 3 [pid 5137] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5137] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5137] memfd_create("syzkaller", 0) = 6 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5137] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5137] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5137] close(6) = 0 [pid 5137] close(7) = 0 [pid 5137] mkdir("./bus", 0777) = 0 [ 64.049313][ T5137] loop0: detected capacity change from 0 to 512 [pid 5137] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5137] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5137] chdir("./bus") = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./25/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 64.097697][ T5137] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 64.110451][ T5137] ext4 filesystem being mounted at /root/syzkaller.grIGLP/25/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(AT_FDCWD, "./25/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./25/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 64.164891][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5140 attached , child_tidptr=0x555555aef750) = 5140 [pid 5140] set_robust_list(0x555555aef760, 24) = 0 [pid 5140] chdir("./26") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5140] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5140] dup3(4, 3, 0) = 3 [pid 5140] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5140] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5140] memfd_create("syzkaller", 0) = 6 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5140] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5140] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5140] close(6) = 0 [pid 5140] close(7) = 0 [pid 5140] mkdir("./bus", 0777) = 0 [ 64.336733][ T5140] loop0: detected capacity change from 0 to 512 [ 64.369107][ 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) = 6 [pid 5140] chdir("./bus") = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5140] mkdir("./bus", 0777) = 0 [pid 5140] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [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] 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=5 /* 0.05 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 [ 64.381604][ T5140] ext4 filesystem being mounted at /root/syzkaller.grIGLP/26/bus supports timestamps until 2038-01-19 (0x7fffffff) getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./26/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./26/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 64.470401][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 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(0x555555aef760, 24 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5143 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5143] chdir("./27") = 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 [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5143] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5143] dup3(4, 3, 0) = 3 [pid 5143] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5143] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5143] memfd_create("syzkaller", 0) = 6 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5143] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5143] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5143] close(6) = 0 [pid 5143] close(7) = 0 [pid 5143] mkdir("./bus", 0777) = 0 [ 64.688445][ 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) = 6 [pid 5143] chdir("./bus") = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=6 /* 0.06 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./27/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 64.727237][ T5143] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 64.739985][ T5143] ext4 filesystem being mounted at /root/syzkaller.grIGLP/27/bus supports timestamps until 2038-01-19 (0x7fffffff) unlink("./27/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./27/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 64.804680][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5146 attached , child_tidptr=0x555555aef750) = 5146 [pid 5146] set_robust_list(0x555555aef760, 24) = 0 [pid 5146] chdir("./28") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5146] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5146] dup3(4, 3, 0) = 3 [pid 5146] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5146] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5146] memfd_create("syzkaller", 0) = 6 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5146] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5146] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5146] close(6) = 0 [pid 5146] close(7) = 0 [pid 5146] mkdir("./bus", 0777) = 0 [ 64.958020][ T5146] loop0: detected capacity change from 0 to 512 [pid 5146] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5146] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5146] chdir("./bus") = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [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] 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=7 /* 0.07 s */} --- [ 65.008287][ T5146] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.021258][ T5146] ext4 filesystem being mounted at /root/syzkaller.grIGLP/28/bus supports timestamps until 2038-01-19 (0x7fffffff) restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./28/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./28/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 65.114703][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5150 attached , child_tidptr=0x555555aef750) = 5150 [pid 5150] set_robust_list(0x555555aef760, 24) = 0 [pid 5150] chdir("./29") = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5150] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5150] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5150] dup3(4, 3, 0) = 3 [pid 5150] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5150] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5150] memfd_create("syzkaller", 0) = 6 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5150] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5150] munmap(0x7fe95f600000, 138412032) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5150] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5150] close(6) = 0 [pid 5150] close(7) = 0 [pid 5150] mkdir("./bus", 0777) = 0 [ 65.325468][ T5150] loop0: detected capacity change from 0 to 512 [pid 5150] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5150] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5150] chdir("./bus") = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5150] mkdir("./bus", 0777) = 0 [pid 5150] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5150] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 65.367342][ T5150] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.380504][ T5150] ext4 filesystem being mounted at /root/syzkaller.grIGLP/29/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5150] 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 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./29/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./29/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 65.448297][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5153 attached , child_tidptr=0x555555aef750) = 5153 [pid 5153] set_robust_list(0x555555aef760, 24) = 0 [pid 5153] chdir("./30") = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5153] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5153] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5153] dup3(4, 3, 0) = 3 [pid 5153] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5153] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5153] memfd_create("syzkaller", 0) = 6 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5153] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5153] munmap(0x7fe95f600000, 138412032) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5153] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5153] close(6) = 0 [pid 5153] close(7) = 0 [pid 5153] mkdir("./bus", 0777) = 0 [ 65.607098][ T5153] loop0: detected capacity change from 0 to 512 [pid 5153] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5153] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5153] chdir("./bus") = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5153] mkdir("./bus", 0777) = 0 [pid 5153] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5153] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5153] 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 5153] exit_group(0) = ? [pid 5153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./30/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/cpuset.effective_cpus") = 0 [ 65.647236][ T5153] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.659871][ T5153] ext4 filesystem being mounted at /root/syzkaller.grIGLP/30/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./30/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 65.703942][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5156 attached [pid 5156] set_robust_list(0x555555aef760, 24) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5156 [pid 5156] chdir("./31") = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5156] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5156] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5156] dup3(4, 3, 0) = 3 [pid 5156] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5156] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5156] memfd_create("syzkaller", 0) = 6 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5156] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5156] munmap(0x7fe95f600000, 138412032) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5156] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5156] close(6) = 0 [pid 5156] close(7) = 0 [pid 5156] mkdir("./bus", 0777) = 0 [ 65.917350][ T5156] loop0: detected capacity change from 0 to 512 [pid 5156] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5156] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5156] chdir("./bus") = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5156] mkdir("./bus", 0777) = 0 [pid 5156] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5156] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 65.957455][ T5156] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 65.970094][ T5156] ext4 filesystem being mounted at /root/syzkaller.grIGLP/31/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5156] 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 5156] exit_group(0) = ? [pid 5156] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./31/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./31/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 66.097516][ T5057] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5159 attached , child_tidptr=0x555555aef750) = 5159 [pid 5159] set_robust_list(0x555555aef760, 24) = 0 [pid 5159] chdir("./32") = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5159] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5159] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5159] dup3(4, 3, 0) = 3 [pid 5159] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5159] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5159] memfd_create("syzkaller", 0) = 6 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5159] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5159] munmap(0x7fe95f600000, 138412032) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5159] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5159] close(6) = 0 [pid 5159] close(7) = 0 [pid 5159] mkdir("./bus", 0777) = 0 [pid 5159] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5159] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5159] chdir("./bus") = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5159] mkdir("./bus", 0777) = 0 [pid 5159] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5159] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5159] 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 5159] exit_group(0) = ? [pid 5159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./32/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/cpuset.effective_cpus") = 0 [ 66.279909][ T5159] loop0: detected capacity change from 0 to 512 [ 66.317371][ T5159] ext4 filesystem being mounted at /root/syzkaller.grIGLP/32/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./32/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5162 attached , child_tidptr=0x555555aef750) = 5162 [pid 5162] set_robust_list(0x555555aef760, 24) = 0 [pid 5162] chdir("./33") = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5162] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5162] dup3(4, 3, 0) = 3 [pid 5162] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5162] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5162] memfd_create("syzkaller", 0) = 6 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5162] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5162] munmap(0x7fe95f600000, 138412032) = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5162] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5162] close(6) = 0 [pid 5162] close(7) = 0 [pid 5162] mkdir("./bus", 0777) = 0 [ 66.516646][ T5162] loop0: detected capacity change from 0 to 512 [pid 5162] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5162] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5162] chdir("./bus") = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5162] mkdir("./bus", 0777) = 0 [pid 5162] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5162] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5162] 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 5162] exit_group(0) = ? [pid 5162] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./33/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/cpuset.effective_cpus") = 0 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) [ 66.557660][ T5162] ext4 filesystem being mounted at /root/syzkaller.grIGLP/33/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./33/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5165 attached , child_tidptr=0x555555aef750) = 5165 [pid 5165] set_robust_list(0x555555aef760, 24) = 0 [pid 5165] chdir("./34") = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5165] write(3, "1000", 4) = 4 [pid 5165] close(3) = 0 [pid 5165] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5165] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5165] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5165] dup3(4, 3, 0) = 3 [pid 5165] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5165] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5165] memfd_create("syzkaller", 0) = 6 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5165] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5165] munmap(0x7fe95f600000, 138412032) = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5165] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5165] close(6) = 0 [pid 5165] close(7) = 0 [pid 5165] mkdir("./bus", 0777) = 0 [pid 5165] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5165] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5165] chdir("./bus") = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5165] mkdir("./bus", 0777) = 0 [pid 5165] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5165] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 66.755375][ T5165] loop0: detected capacity change from 0 to 512 [ 66.787657][ T5165] ext4 filesystem being mounted at /root/syzkaller.grIGLP/34/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5165] 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 5165] exit_group(0) = ? [pid 5165] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./34/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./34/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5168 attached , child_tidptr=0x555555aef750) = 5168 [pid 5168] set_robust_list(0x555555aef760, 24) = 0 [pid 5168] chdir("./35") = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5168] write(3, "1000", 4) = 4 [pid 5168] close(3) = 0 [pid 5168] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5168] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5168] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5168] dup3(4, 3, 0) = 3 [pid 5168] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5168] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5168] memfd_create("syzkaller", 0) = 6 [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5168] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5168] munmap(0x7fe95f600000, 138412032) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5168] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5168] close(6) = 0 [pid 5168] close(7) = 0 [pid 5168] mkdir("./bus", 0777) = 0 [ 67.025610][ T5168] loop0: detected capacity change from 0 to 512 [pid 5168] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5168] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5168] chdir("./bus") = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5168] mkdir("./bus", 0777) = 0 [pid 5168] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5168] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5168] 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 5168] exit_group(0) = ? [pid 5168] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, 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 [ 67.078297][ T5168] ext4 filesystem being mounted at /root/syzkaller.grIGLP/35/bus supports timestamps until 2038-01-19 (0x7fffffff) getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./35/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./35/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5171 attached , child_tidptr=0x555555aef750) = 5171 [pid 5171] set_robust_list(0x555555aef760, 24) = 0 [pid 5171] chdir("./36") = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5171] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5171] dup3(4, 3, 0) = 3 [pid 5171] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5171] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5171] memfd_create("syzkaller", 0) = 6 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5171] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5171] munmap(0x7fe95f600000, 138412032) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5171] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5171] close(6) = 0 [pid 5171] close(7) = 0 [pid 5171] mkdir("./bus", 0777) = 0 [ 67.357926][ T5171] loop0: detected capacity change from 0 to 512 [pid 5171] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5171] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5171] chdir("./bus") = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5171] mkdir("./bus", 0777) = 0 [pid 5171] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5171] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5171] 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 5171] exit_group(0) = ? [pid 5171] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./36/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/cpuset.effective_cpus") = 0 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 [ 67.407634][ T5171] ext4 filesystem being mounted at /root/syzkaller.grIGLP/36/bus supports timestamps until 2038-01-19 (0x7fffffff) getdents64(4, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./36/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5174 attached [pid 5174] set_robust_list(0x555555aef760, 24 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5174 [pid 5174] <... set_robust_list resumed>) = 0 [pid 5174] chdir("./37") = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5174] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5174] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5174] dup3(4, 3, 0) = 3 [pid 5174] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5174] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5174] memfd_create("syzkaller", 0) = 6 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5174] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5174] munmap(0x7fe95f600000, 138412032) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5174] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5174] close(6) = 0 [pid 5174] close(7) = 0 [pid 5174] mkdir("./bus", 0777) = 0 [pid 5174] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5174] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5174] chdir("./bus") = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5174] mkdir("./bus", 0777) = 0 [pid 5174] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5174] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5174] 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 5174] exit_group(0) = ? [pid 5174] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./37/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 [ 67.617685][ T5174] loop0: detected capacity change from 0 to 512 [ 67.647815][ T5174] ext4 filesystem being mounted at /root/syzkaller.grIGLP/37/bus supports timestamps until 2038-01-19 (0x7fffffff) unlink("./37/binderfs") = 0 umount2("./37/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5177 attached , child_tidptr=0x555555aef750) = 5177 [pid 5177] set_robust_list(0x555555aef760, 24) = 0 [pid 5177] chdir("./38") = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5177] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5177] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5177] dup3(4, 3, 0) = 3 [pid 5177] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5177] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5177] memfd_create("syzkaller", 0) = 6 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5177] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5177] munmap(0x7fe95f600000, 138412032) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5177] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5177] close(6) = 0 [pid 5177] close(7) = 0 [pid 5177] mkdir("./bus", 0777) = 0 [ 67.858976][ T5177] loop0: detected capacity change from 0 to 512 [pid 5177] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5177] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5177] chdir("./bus") = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5177] mkdir("./bus", 0777) = 0 [pid 5177] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5177] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 67.898055][ T5177] ext4 filesystem being mounted at /root/syzkaller.grIGLP/38/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5177] 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 5177] exit_group(0) = ? [pid 5177] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./38/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./38/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5181 attached [pid 5181] set_robust_list(0x555555aef760, 24) = 0 [pid 5181] chdir("./39") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] setpgid(0, 0 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5181 [pid 5181] <... setpgid resumed>) = 0 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5181] write(3, "1000", 4) = 4 [pid 5181] close(3) = 0 [pid 5181] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5181] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5181] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5181] dup3(4, 3, 0) = 3 [pid 5181] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5181] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5181] memfd_create("syzkaller", 0) = 6 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5181] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5181] munmap(0x7fe95f600000, 138412032) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5181] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5181] close(6) = 0 [pid 5181] close(7) = 0 [pid 5181] mkdir("./bus", 0777) = 0 [ 68.199147][ T5181] loop0: detected capacity change from 0 to 512 [pid 5181] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5181] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5181] chdir("./bus") = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5181] mkdir("./bus", 0777) = 0 [pid 5181] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5181] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 68.239013][ T5181] ext4 filesystem being mounted at /root/syzkaller.grIGLP/39/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5181] 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 5181] exit_group(0) = ? [pid 5181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./39/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./39/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5184 attached , child_tidptr=0x555555aef750) = 5184 [pid 5184] set_robust_list(0x555555aef760, 24) = 0 [pid 5184] chdir("./40") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5184] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5184] dup3(4, 3, 0) = 3 [pid 5184] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5184] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5184] memfd_create("syzkaller", 0) = 6 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5184] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5184] munmap(0x7fe95f600000, 138412032) = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5184] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5184] close(6) = 0 [pid 5184] close(7) = 0 [pid 5184] mkdir("./bus", 0777) = 0 [pid 5184] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5184] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5184] chdir("./bus") = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5184] mkdir("./bus", 0777) = 0 [pid 5184] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5184] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5184] 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 5184] exit_group(0) = ? [ 68.496244][ T5184] loop0: detected capacity change from 0 to 512 [ 68.527628][ T5184] ext4 filesystem being mounted at /root/syzkaller.grIGLP/40/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./40/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./40/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5187 attached , child_tidptr=0x555555aef750) = 5187 [pid 5187] set_robust_list(0x555555aef760, 24) = 0 [pid 5187] chdir("./41") = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5187] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5187] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5187] dup3(4, 3, 0) = 3 [pid 5187] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5187] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5187] memfd_create("syzkaller", 0) = 6 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5187] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5187] munmap(0x7fe95f600000, 138412032) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5187] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5187] close(6) = 0 [pid 5187] close(7) = 0 [pid 5187] mkdir("./bus", 0777) = 0 [pid 5187] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5187] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5187] chdir("./bus") = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5187] mkdir("./bus", 0777) = 0 [pid 5187] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5187] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5187] 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 5187] exit_group(0) = ? [ 68.789928][ T5187] loop0: detected capacity change from 0 to 512 [ 68.827773][ T5187] ext4 filesystem being mounted at /root/syzkaller.grIGLP/41/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./41/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./41/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5190 attached [pid 5190] set_robust_list(0x555555aef760, 24) = 0 [pid 5190] chdir("./42" [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5190 [pid 5190] <... chdir resumed>) = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5190] write(3, "1000", 4) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5190] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5190] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5190] dup3(4, 3, 0) = 3 [pid 5190] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5190] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5190] memfd_create("syzkaller", 0) = 6 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5190] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5190] munmap(0x7fe95f600000, 138412032) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5190] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5190] close(6) = 0 [pid 5190] close(7) = 0 [pid 5190] mkdir("./bus", 0777) = 0 [pid 5190] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5190] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5190] chdir("./bus") = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5190] mkdir("./bus", 0777) = 0 [pid 5190] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 69.100893][ T5190] loop0: detected capacity change from 0 to 512 [ 69.137328][ T5190] ext4 filesystem being mounted at /root/syzkaller.grIGLP/42/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5190] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5190] 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 5190] exit_group(0) = ? [pid 5190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./42/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./42/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5193 attached , child_tidptr=0x555555aef750) = 5193 [pid 5193] set_robust_list(0x555555aef760, 24) = 0 [pid 5193] chdir("./43") = 0 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5193] write(3, "1000", 4) = 4 [pid 5193] close(3) = 0 [pid 5193] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5193] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5193] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5193] dup3(4, 3, 0) = 3 [pid 5193] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5193] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5193] memfd_create("syzkaller", 0) = 6 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5193] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5193] munmap(0x7fe95f600000, 138412032) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5193] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5193] close(6) = 0 [pid 5193] close(7) = 0 [pid 5193] mkdir("./bus", 0777) = 0 [ 69.437220][ T5193] loop0: detected capacity change from 0 to 512 [pid 5193] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5193] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5193] chdir("./bus") = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5193] mkdir("./bus", 0777) = 0 [pid 5193] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5193] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 69.477482][ T5193] ext4 filesystem being mounted at /root/syzkaller.grIGLP/43/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5193] 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 5193] exit_group(0) = ? [pid 5193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./43/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./43/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5196 attached , child_tidptr=0x555555aef750) = 5196 [pid 5196] set_robust_list(0x555555aef760, 24) = 0 [pid 5196] chdir("./44") = 0 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5196] setpgid(0, 0) = 0 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5196] write(3, "1000", 4) = 4 [pid 5196] close(3) = 0 [pid 5196] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5196] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5196] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5196] dup3(4, 3, 0) = 3 [pid 5196] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5196] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5196] memfd_create("syzkaller", 0) = 6 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5196] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5196] munmap(0x7fe95f600000, 138412032) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5196] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5196] close(6) = 0 [pid 5196] close(7) = 0 [pid 5196] mkdir("./bus", 0777) = 0 [pid 5196] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5196] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5196] chdir("./bus") = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5196] mkdir("./bus", 0777) = 0 [pid 5196] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5196] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5196] 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 5196] exit_group(0) = ? [ 69.804530][ T5196] loop0: detected capacity change from 0 to 512 [ 69.837806][ T5196] ext4 filesystem being mounted at /root/syzkaller.grIGLP/44/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./44/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./44/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555aef750) = 5199 ./strace-static-x86_64: Process 5199 attached [pid 5199] set_robust_list(0x555555aef760, 24) = 0 [pid 5199] chdir("./45") = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5199] setpgid(0, 0) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] write(3, "1000", 4) = 4 [pid 5199] close(3) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5199] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5199] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5199] dup3(4, 3, 0) = 3 [pid 5199] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5199] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5199] memfd_create("syzkaller", 0) = 6 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5199] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5199] munmap(0x7fe95f600000, 138412032) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5199] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5199] close(6) = 0 [pid 5199] close(7) = 0 [pid 5199] mkdir("./bus", 0777) = 0 [ 70.107676][ T5199] loop0: detected capacity change from 0 to 512 [pid 5199] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5199] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5199] chdir("./bus") = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5199] mkdir("./bus", 0777) = 0 [pid 5199] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5199] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5199] 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 5199] exit_group(0) = ? [ 70.149835][ T5199] ext4 filesystem being mounted at /root/syzkaller.grIGLP/45/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./45/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./45/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5202 attached [pid 5202] set_robust_list(0x555555aef760, 24) = 0 [pid 5202] chdir("./46" [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5202 [pid 5202] <... chdir resumed>) = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5202] setpgid(0, 0) = 0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5202] write(3, "1000", 4) = 4 [pid 5202] close(3) = 0 [pid 5202] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5202] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5202] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5202] dup3(4, 3, 0) = 3 [pid 5202] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5202] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5202] memfd_create("syzkaller", 0) = 6 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5202] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5202] munmap(0x7fe95f600000, 138412032) = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5202] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5202] close(6) = 0 [pid 5202] close(7) = 0 [pid 5202] mkdir("./bus", 0777) = 0 [ 70.429269][ T5202] loop0: detected capacity change from 0 to 512 [pid 5202] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5202] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5202] chdir("./bus") = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5202] mkdir("./bus", 0777) = 0 [pid 5202] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5202] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5202] 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 5202] exit_group(0) = ? [pid 5202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./46/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/bus") = 0 [ 70.470659][ T5202] ext4 filesystem being mounted at /root/syzkaller.grIGLP/46/bus supports timestamps until 2038-01-19 (0x7fffffff) 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 umount2("./46/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5206 attached , child_tidptr=0x555555aef750) = 5206 [pid 5206] set_robust_list(0x555555aef760, 24) = 0 [pid 5206] chdir("./47") = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5206] write(3, "1000", 4) = 4 [pid 5206] close(3) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5206] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5206] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5206] dup3(4, 3, 0) = 3 [pid 5206] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5206] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5206] memfd_create("syzkaller", 0) = 6 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5206] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5206] munmap(0x7fe95f600000, 138412032) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5206] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5206] close(6) = 0 [pid 5206] close(7) = 0 [pid 5206] mkdir("./bus", 0777) = 0 [ 70.671736][ T5206] loop0: detected capacity change from 0 to 512 [pid 5206] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5206] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5206] chdir("./bus") = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5206] mkdir("./bus", 0777) = 0 [pid 5206] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5206] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5206] 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 5206] exit_group(0) = ? [ 70.717403][ T5206] ext4 filesystem being mounted at /root/syzkaller.grIGLP/47/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5206] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./47/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./47/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5209 attached , child_tidptr=0x555555aef750) = 5209 [pid 5209] set_robust_list(0x555555aef760, 24) = 0 [pid 5209] chdir("./48") = 0 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5209] setpgid(0, 0) = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5209] write(3, "1000", 4) = 4 [pid 5209] close(3) = 0 [pid 5209] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5209] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5209] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5209] dup3(4, 3, 0) = 3 [pid 5209] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5209] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5209] memfd_create("syzkaller", 0) = 6 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5209] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5209] munmap(0x7fe95f600000, 138412032) = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5209] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5209] close(6) = 0 [pid 5209] close(7) = 0 [pid 5209] mkdir("./bus", 0777) = 0 [pid 5209] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5209] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5209] chdir("./bus") = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5209] mkdir("./bus", 0777) = 0 [pid 5209] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5209] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 70.999959][ T5209] loop0: detected capacity change from 0 to 512 [ 71.037896][ T5209] ext4 filesystem being mounted at /root/syzkaller.grIGLP/48/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5209] 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 5209] exit_group(0) = ? [pid 5209] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./48/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./48/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5212 attached , child_tidptr=0x555555aef750) = 5212 [pid 5212] set_robust_list(0x555555aef760, 24) = 0 [pid 5212] chdir("./49") = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5212] setpgid(0, 0) = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5212] close(3) = 0 [pid 5212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5212] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5212] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5212] dup3(4, 3, 0) = 3 [pid 5212] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5212] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5212] memfd_create("syzkaller", 0) = 6 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5212] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5212] munmap(0x7fe95f600000, 138412032) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5212] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5212] close(6) = 0 [pid 5212] close(7) = 0 [pid 5212] mkdir("./bus", 0777) = 0 [ 71.289172][ T5212] loop0: detected capacity change from 0 to 512 [pid 5212] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5212] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5212] chdir("./bus") = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5212] mkdir("./bus", 0777) = 0 [pid 5212] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5212] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5212] 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 [ 71.347948][ T5212] ext4 filesystem being mounted at /root/syzkaller.grIGLP/49/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./49/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./49/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5216 attached , child_tidptr=0x555555aef750) = 5216 [pid 5216] set_robust_list(0x555555aef760, 24) = 0 [pid 5216] chdir("./50") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5216] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5216] dup3(4, 3, 0) = 3 [pid 5216] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5216] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5216] memfd_create("syzkaller", 0) = 6 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5216] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5216] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5216] close(6) = 0 [pid 5216] close(7) = 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) = 6 [pid 5216] chdir("./bus") = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=1 /* 0.01 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./50/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/cpuset.effective_cpus") = 0 [ 71.635658][ T5216] loop0: detected capacity change from 0 to 512 [ 71.668227][ T5216] ext4 filesystem being mounted at /root/syzkaller.grIGLP/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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./50/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5219 attached [pid 5219] set_robust_list(0x555555aef760, 24) = 0 [pid 5219] chdir("./51") = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5219 [pid 5219] <... setpgid resumed>) = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5219] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5219] dup3(4, 3, 0) = 3 [pid 5219] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5219] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5219] memfd_create("syzkaller", 0) = 6 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5219] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5219] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5219] close(6) = 0 [pid 5219] close(7) = 0 [pid 5219] mkdir("./bus", 0777) = 0 [ 71.929099][ T5219] loop0: detected capacity change from 0 to 512 [pid 5219] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5219] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5219] chdir("./bus") = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=4 /* 0.04 s */} --- [ 71.977635][ T5219] ext4 filesystem being mounted at /root/syzkaller.grIGLP/51/bus supports timestamps until 2038-01-19 (0x7fffffff) restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./51/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./51/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5222 attached , child_tidptr=0x555555aef750) = 5222 [pid 5222] set_robust_list(0x555555aef760, 24) = 0 [pid 5222] chdir("./52") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5222] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5222] dup3(4, 3, 0) = 3 [pid 5222] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5222] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5222] memfd_create("syzkaller", 0) = 6 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5222] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5222] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5222] close(6) = 0 [pid 5222] close(7) = 0 [pid 5222] mkdir("./bus", 0777) = 0 [pid 5222] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [ 72.179360][ T5222] loop0: detected capacity change from 0 to 512 [ 72.217628][ T5222] ext4 filesystem being mounted at /root/syzkaller.grIGLP/52/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5222] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5222] chdir("./bus") = 0 [pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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("./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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./52/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./52/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5225 attached , child_tidptr=0x555555aef750) = 5225 [pid 5225] set_robust_list(0x555555aef760, 24) = 0 [pid 5225] chdir("./53") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5225] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5225] dup3(4, 3, 0) = 3 [pid 5225] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5225] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5225] memfd_create("syzkaller", 0) = 6 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5225] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5225] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5225] close(6) = 0 [pid 5225] close(7) = 0 [pid 5225] mkdir("./bus", 0777) = 0 [ 72.495654][ T5225] loop0: detected capacity change from 0 to 512 [pid 5225] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5225] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5225] chdir("./bus") = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 [ 72.537926][ T5225] ext4 filesystem being mounted at /root/syzkaller.grIGLP/53/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./53/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./53/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5228 attached [pid 5228] set_robust_list(0x555555aef760, 24) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5228 [pid 5228] chdir("./54") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5228] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5228] dup3(4, 3, 0) = 3 [pid 5228] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5228] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5228] memfd_create("syzkaller", 0) = 6 [pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5228] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5228] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5228] close(6) = 0 [pid 5228] close(7) = 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) = 6 [pid 5228] chdir("./bus") = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [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] 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=3 /* 0.03 s */} --- [ 72.751454][ T5228] loop0: detected capacity change from 0 to 512 [ 72.787465][ T5228] ext4 filesystem being mounted at /root/syzkaller.grIGLP/54/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./54/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./54/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5231 attached , child_tidptr=0x555555aef750) = 5231 [pid 5231] set_robust_list(0x555555aef760, 24) = 0 [pid 5231] chdir("./55") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5231] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5231] dup3(4, 3, 0) = 3 [pid 5231] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5231] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5231] memfd_create("syzkaller", 0) = 6 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5231] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5231] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5231] close(6) = 0 [pid 5231] close(7) = 0 [pid 5231] mkdir("./bus", 0777) = 0 [ 73.035896][ T5231] loop0: detected capacity change from 0 to 512 [pid 5231] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5231] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5231] chdir("./bus") = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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 */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./55/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/cpuset.effective_cpus") = 0 [ 73.088789][ T5231] ext4 filesystem being mounted at /root/syzkaller.grIGLP/55/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./55/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5234 attached , child_tidptr=0x555555aef750) = 5234 [pid 5234] set_robust_list(0x555555aef760, 24) = 0 [pid 5234] chdir("./56") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5234] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5234] dup3(4, 3, 0) = 3 [pid 5234] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5234] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5234] memfd_create("syzkaller", 0) = 6 [pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5234] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5234] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5234] close(6) = 0 [pid 5234] close(7) = 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) = 6 [pid 5234] chdir("./bus") = 0 [pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [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] 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=3 /* 0.03 s */} --- [ 73.280167][ T5234] loop0: detected capacity change from 0 to 512 [ 73.317760][ T5234] ext4 filesystem being mounted at /root/syzkaller.grIGLP/56/bus supports timestamps until 2038-01-19 (0x7fffffff) restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./56/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./56/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5237 attached , child_tidptr=0x555555aef750) = 5237 [pid 5237] set_robust_list(0x555555aef760, 24) = 0 [pid 5237] chdir("./57") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5237] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5237] dup3(4, 3, 0) = 3 [pid 5237] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5237] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5237] memfd_create("syzkaller", 0) = 6 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5237] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5237] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5237] close(6) = 0 [pid 5237] close(7) = 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) = 6 [pid 5237] chdir("./bus") = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [ 73.513409][ T5237] loop0: detected capacity change from 0 to 512 [ 73.548323][ T5237] ext4 filesystem being mounted at /root/syzkaller.grIGLP/57/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] 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 */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./57/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./57/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5240 attached , child_tidptr=0x555555aef750) = 5240 [pid 5240] set_robust_list(0x555555aef760, 24) = 0 [pid 5240] chdir("./58") = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5240] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5240] dup3(4, 3, 0) = 3 [pid 5240] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5240] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5240] memfd_create("syzkaller", 0) = 6 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5240] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5240] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5240] close(6) = 0 [pid 5240] close(7) = 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) = 6 [pid 5240] chdir("./bus") = 0 [pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 73.729899][ T5240] loop0: detected capacity change from 0 to 512 [ 73.767635][ T5240] ext4 filesystem being mounted at /root/syzkaller.grIGLP/58/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./58/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/cpuset.effective_cpus") = 0 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./58/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5243 attached , child_tidptr=0x555555aef750) = 5243 [pid 5243] set_robust_list(0x555555aef760, 24) = 0 [pid 5243] chdir("./59") = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5243] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5243] dup3(4, 3, 0) = 3 [pid 5243] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5243] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5243] memfd_create("syzkaller", 0) = 6 [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5243] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5243] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5243] close(6) = 0 [pid 5243] close(7) = 0 [pid 5243] mkdir("./bus", 0777) = 0 [ 74.026500][ T5243] loop0: detected capacity change from 0 to 512 [pid 5243] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5243] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5243] chdir("./bus") = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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 [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] 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=3 /* 0.03 s */} --- 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./59/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/cpuset.effective_cpus") = 0 [ 74.068091][ T5243] ext4 filesystem being mounted at /root/syzkaller.grIGLP/59/bus supports timestamps until 2038-01-19 (0x7fffffff) 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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 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 umount2("./59/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5246 attached , child_tidptr=0x555555aef750) = 5246 [pid 5246] set_robust_list(0x555555aef760, 24) = 0 [pid 5246] chdir("./60") = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5246] setpgid(0, 0) = 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] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5246] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5246] dup3(4, 3, 0) = 3 [pid 5246] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5246] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5246] memfd_create("syzkaller", 0) = 6 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5246] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7fe95f600000, 138412032) = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5246] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5246] close(6) = 0 [pid 5246] close(7) = 0 [pid 5246] mkdir("./bus", 0777) = 0 [ 74.307053][ T5246] loop0: detected capacity change from 0 to 512 [pid 5246] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5246] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5246] chdir("./bus") = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [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] 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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./60/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/cpuset.effective_cpus") = 0 umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 74.347522][ T5246] ext4 filesystem being mounted at /root/syzkaller.grIGLP/60/bus supports timestamps until 2038-01-19 (0x7fffffff) newfstatat(AT_FDCWD, "./60/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/bus") = 0 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 umount2("./60/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./60") = 0 mkdir("./61", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5249 attached , child_tidptr=0x555555aef750) = 5249 [pid 5249] set_robust_list(0x555555aef760, 24) = 0 [pid 5249] chdir("./61") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5249] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5249] dup3(4, 3, 0) = 3 [pid 5249] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5249] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5249] memfd_create("syzkaller", 0) = 6 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5249] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5249] munmap(0x7fe95f600000, 138412032) = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5249] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5249] close(6) = 0 [pid 5249] close(7) = 0 [pid 5249] mkdir("./bus", 0777) = 0 [ 74.575908][ T5249] loop0: detected capacity change from 0 to 512 [pid 5249] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5249] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5249] chdir("./bus") = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5249] mkdir("./bus", 0777) = 0 [pid 5249] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5249] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5249] 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 5249] exit_group(0) = ? [pid 5249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./61/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/cpuset.effective_cpus") = 0 umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/bus") = 0 umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 umount2("./61/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 74.618434][ T5249] ext4 filesystem being mounted at /root/syzkaller.grIGLP/61/bus supports timestamps until 2038-01-19 (0x7fffffff) unlink("./61/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./61") = 0 mkdir("./62", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5252 attached , child_tidptr=0x555555aef750) = 5252 [pid 5252] set_robust_list(0x555555aef760, 24) = 0 [pid 5252] chdir("./62") = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5252] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5252] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5252] dup3(4, 3, 0) = 3 [pid 5252] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5252] ioctl(3, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x200000c0) = -1 EINVAL (Invalid argument) [pid 5252] memfd_create("syzkaller", 0) = 6 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe95f600000 [pid 5252] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5252] munmap(0x7fe95f600000, 138412032) = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5252] ioctl(7, LOOP_SET_FD, 6) = 0 [pid 5252] close(6) = 0 [pid 5252] close(7) = 0 [pid 5252] mkdir("./bus", 0777) = 0 [ 74.837066][ T5252] loop0: detected capacity change from 0 to 512 [pid 5252] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5252] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 6 [pid 5252] chdir("./bus") = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5252] mkdir("./bus", 0777) = 0 [pid 5252] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5252] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5252] 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 5252] exit_group(0) = ? [ 74.887465][ T5252] ext4 filesystem being mounted at /root/syzkaller.grIGLP/62/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", 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, 0x555555af07f0 /* 6 entries */, 32768) = 192 umount2("./62/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/cpuset.effective_cpus") = 0 umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/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, 0x555555af8830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555af8830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/bus") = 0 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 umount2("./62/cgroup.controllers", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/cgroup.controllers") = 0 getdents64(3, 0x555555af07f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./62") = 0 mkdir("./63", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x555555aef760, 24) = 0 [pid 5255] chdir("./63" [pid 5057] <... clone resumed>, child_tidptr=0x555555aef750) = 5255 [pid 5255] <... chdir resumed>) = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5255] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5255] dup3(4, 3, 0) = 3 [pid 5255] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 75.108926][ T5255] ------------[ cut here ]------------ [ 75.114404][ T5255] Looking for class "&ei->i_data_sem" with key __key.0, but found a different class "&ei->i_data_sem" with the same key [ 75.127102][ T5255] WARNING: CPU: 1 PID: 5255 at kernel/locking/lockdep.c:932 look_up_lock_class+0x127/0x130 [ 75.137097][ T5255] Modules linked in: [ 75.140968][ T5255] CPU: 1 PID: 5255 Comm: syz-executor181 Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0 [ 75.151100][ T5255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 75.161137][ T5255] RIP: 0010:look_up_lock_class+0x127/0x130 [ 75.166931][ T5255] Code: c7 c7 60 ad cc 8a e8 e8 7a c0 f6 90 0f 0b 90 90 90 31 db eb c2 c6 05 dd 55 97 04 01 90 48 c7 c7 80 b0 cc 8a e8 ca 7a c0 f6 90 <0f> 0b 90 90 e9 6a ff ff ff 53 48 39 77 10 48 89 fb 74 51 66 83 7f [ 75.186611][ T5255] RSP: 0018:ffffc90003e17630 EFLAGS: 00010082 [ 75.192667][ T5255] RAX: 0000000000000000 RBX: ffffffff921a5118 RCX: ffffffff814e18f9 [ 75.200624][ T5255] RDX: ffff888029c23b80 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 75.208583][ T5255] RBP: ffffffff92afe561 R08: 0000000000000001 R09: 0000000000000000 [ 75.216538][ T5255] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88807c6aaa88 [ 75.224499][ T5255] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff92a346a0 [ 75.232458][ T5255] FS: 0000555555aef480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 75.241374][ T5255] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.247952][ T5255] CR2: 00007fe967c0800a CR3: 00000000226bc000 CR4: 0000000000350ef0 [ 75.255930][ T5255] Call Trace: [ 75.259202][ T5255] [ 75.262133][ T5255] ? show_regs+0x8f/0xa0 [ 75.266362][ T5255] ? __warn+0xe6/0x390 [ 75.270419][ T5255] ? __wake_up_klogd.part.0+0x99/0xf0 [ 75.275774][ T5255] ? look_up_lock_class+0x127/0x130 [ 75.280967][ T5255] ? report_bug+0x3bc/0x580 [ 75.285490][ T5255] ? handle_bug+0x3d/0x70 [ 75.289805][ T5255] ? exc_invalid_op+0x17/0x40 [ 75.294468][ T5255] ? asm_exc_invalid_op+0x1a/0x20 [ 75.299476][ T5255] ? __warn_printk+0x199/0x350 [ 75.304224][ T5255] ? __warn_printk+0x1a6/0x350 [ 75.308979][ T5255] ? look_up_lock_class+0x127/0x130 [ 75.314175][ T5255] ? print_usage_bug.part.0+0x550/0x550 [ 75.319718][ T5255] register_lock_class+0xb1/0x1230 [ 75.324815][ T5255] ? is_dynamic_key+0x200/0x200 [ 75.329655][ T5255] ? hlock_class+0x4e/0x130 [ 75.334141][ T5255] ? is_dynamic_key+0x200/0x200 [ 75.338975][ T5255] __lock_acquire+0x112/0x3b30 [ 75.343728][ T5255] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.349699][ T5255] ? __down_write_common+0x17a/0x1400 [ 75.355100][ T5255] lock_acquire+0x1ae/0x520 [ 75.359584][ T5255] ? ext4_move_extents+0x9d1/0x3940 [ 75.364771][ T5255] ? lock_sync+0x190/0x190 [ 75.369167][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.374264][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.379375][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.384472][ T5255] down_write_nested+0x3d/0x50 [ 75.389232][ T5255] ? ext4_move_extents+0x9d1/0x3940 [ 75.394420][ T5255] ext4_move_extents+0x9d1/0x3940 [ 75.399438][ T5255] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.405406][ T5255] ? ext4_double_up_write_data_sem+0x30/0x30 [ 75.411377][ T5255] ? lock_sync+0x190/0x190 [ 75.415776][ T5255] __ext4_ioctl+0x3ab2/0x4570 [ 75.420440][ T5255] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 75.426233][ T5255] ? ext4_force_shutdown+0x5d0/0x5d0 [ 75.431504][ T5255] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 75.437383][ T5255] ? do_vfs_ioctl+0x379/0x1920 [ 75.442134][ T5255] ? vfs_fileattr_set+0xbf0/0xbf0 [ 75.447143][ T5255] ? find_held_lock+0x2d/0x110 [ 75.451902][ T5255] ? bpf_lsm_file_ioctl+0x9/0x10 [ 75.456824][ T5255] ? ext4_fileattr_set+0x17a0/0x17a0 [ 75.462092][ T5255] __x64_sys_ioctl+0x18f/0x210 [ 75.466840][ T5255] do_syscall_64+0xd3/0x250 [ 75.471331][ T5255] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 75.477211][ T5255] RIP: 0033:0x7fe967bbeb29 [ 75.481607][ T5255] 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 [ 75.501214][ T5255] RSP: 002b:00007ffcce85a358 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.509618][ T5255] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe967bbeb29 [ 75.517584][ T5255] RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000003 [ 75.525555][ T5255] RBP: 0000000000000000 R08: 00007ffcce85a38c R09: 00007ffcce85a38c [ 75.533527][ T5255] R10: 00007ffcce85a38c R11: 0000000000000246 R12: 00007ffcce85a38c [ 75.541515][ T5255] R13: 000000000000003f R14: 431bde82d7b634db R15: 00007ffcce85a3c0 [ 75.549487][ T5255] [ 75.552491][ T5255] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 75.559762][ T5255] CPU: 1 PID: 5255 Comm: syz-executor181 Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0 [ 75.569832][ T5255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 75.579910][ T5255] Call Trace: [ 75.583186][ T5255] [ 75.586104][ T5255] dump_stack_lvl+0xd9/0x1b0 [ 75.590683][ T5255] panic+0x6dc/0x790 [ 75.594571][ T5255] ? panic_smp_self_stop+0xa0/0xa0 [ 75.599673][ T5255] ? show_trace_log_lvl+0x363/0x4f0 [ 75.604870][ T5255] ? check_panic_on_warn+0x1f/0xb0 [ 75.609977][ T5255] ? look_up_lock_class+0x127/0x130 [ 75.615169][ T5255] check_panic_on_warn+0xab/0xb0 [ 75.620108][ T5255] __warn+0xf2/0x390 [ 75.623991][ T5255] ? __wake_up_klogd.part.0+0x99/0xf0 [ 75.629344][ T5255] ? look_up_lock_class+0x127/0x130 [ 75.634531][ T5255] report_bug+0x3bc/0x580 [ 75.638854][ T5255] handle_bug+0x3d/0x70 [ 75.643001][ T5255] exc_invalid_op+0x17/0x40 [ 75.647500][ T5255] asm_exc_invalid_op+0x1a/0x20 [ 75.652346][ T5255] RIP: 0010:look_up_lock_class+0x127/0x130 [ 75.658149][ T5255] Code: c7 c7 60 ad cc 8a e8 e8 7a c0 f6 90 0f 0b 90 90 90 31 db eb c2 c6 05 dd 55 97 04 01 90 48 c7 c7 80 b0 cc 8a e8 ca 7a c0 f6 90 <0f> 0b 90 90 e9 6a ff ff ff 53 48 39 77 10 48 89 fb 74 51 66 83 7f [ 75.678026][ T5255] RSP: 0018:ffffc90003e17630 EFLAGS: 00010082 [ 75.684086][ T5255] RAX: 0000000000000000 RBX: ffffffff921a5118 RCX: ffffffff814e18f9 [ 75.692063][ T5255] RDX: ffff888029c23b80 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 75.700052][ T5255] RBP: ffffffff92afe561 R08: 0000000000000001 R09: 0000000000000000 [ 75.708016][ T5255] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88807c6aaa88 [ 75.715980][ T5255] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff92a346a0 [ 75.723957][ T5255] ? __warn_printk+0x199/0x350 [ 75.728728][ T5255] ? __warn_printk+0x1a6/0x350 [ 75.733506][ T5255] ? print_usage_bug.part.0+0x550/0x550 [ 75.739059][ T5255] register_lock_class+0xb1/0x1230 [ 75.744176][ T5255] ? is_dynamic_key+0x200/0x200 [ 75.749019][ T5255] ? hlock_class+0x4e/0x130 [ 75.753516][ T5255] ? is_dynamic_key+0x200/0x200 [ 75.758359][ T5255] __lock_acquire+0x112/0x3b30 [ 75.763113][ T5255] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.769080][ T5255] ? __down_write_common+0x17a/0x1400 [ 75.774448][ T5255] lock_acquire+0x1ae/0x520 [ 75.778942][ T5255] ? ext4_move_extents+0x9d1/0x3940 [ 75.784130][ T5255] ? lock_sync+0x190/0x190 [ 75.788535][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.793640][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.798737][ T5255] ? preempt_count_sub+0x160/0x160 [ 75.803837][ T5255] down_write_nested+0x3d/0x50 [ 75.808597][ T5255] ? ext4_move_extents+0x9d1/0x3940 [ 75.813789][ T5255] ext4_move_extents+0x9d1/0x3940 [ 75.818815][ T5255] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 75.824785][ T5255] ? ext4_double_up_write_data_sem+0x30/0x30 [ 75.830756][ T5255] ? lock_sync+0x190/0x190 [ 75.835161][ T5255] __ext4_ioctl+0x3ab2/0x4570 [ 75.839827][ T5255] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 75.845620][ T5255] ? ext4_force_shutdown+0x5d0/0x5d0 [ 75.850893][ T5255] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 75.856772][ T5255] ? do_vfs_ioctl+0x379/0x1920 [ 75.861523][ T5255] ? vfs_fileattr_set+0xbf0/0xbf0 [ 75.866537][ T5255] ? find_held_lock+0x2d/0x110 [ 75.871291][ T5255] ? bpf_lsm_file_ioctl+0x9/0x10 [ 75.876211][ T5255] ? ext4_fileattr_set+0x17a0/0x17a0 [ 75.881483][ T5255] __x64_sys_ioctl+0x18f/0x210 [ 75.886235][ T5255] do_syscall_64+0xd3/0x250 [ 75.890731][ T5255] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 75.896628][ T5255] RIP: 0033:0x7fe967bbeb29 [ 75.901052][ T5255] 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 [ 75.920650][ T5255] RSP: 002b:00007ffcce85a358 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.929049][ T5255] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe967bbeb29 [ 75.937009][ T5255] RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000003 [ 75.944964][ T5255] RBP: 0000000000000000 R08: 00007ffcce85a38c R09: 00007ffcce85a38c [ 75.952921][ T5255] R10: 00007ffcce85a38c R11: 0000000000000246 R12: 00007ffcce85a38c [ 75.960903][ T5255] R13: 000000000000003f R14: 431bde82d7b634db R15: 00007ffcce85a3c0 [ 75.968864][ T5255] [ 75.972104][ T5255] Kernel Offset: disabled [ 75.976410][ T5255] Rebooting in 86400 seconds..