./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2178450853 <...> Warning: Permanently added '10.128.0.233' (ED25519) to the list of known hosts. execve("./syz-executor2178450853", ["./syz-executor2178450853"], 0x7ffda79490b0 /* 10 vars */) = 0 brk(NULL) = 0x555555a64000 brk(0x555555a64d00) = 0x555555a64d00 arch_prctl(ARCH_SET_FS, 0x555555a64380) = 0 set_tid_address(0x555555a64650) = 5066 set_robust_list(0x555555a64660, 24) = 0 rseq(0x555555a64ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2178450853", 4096) = 28 getrandom("\x09\x0c\xad\xdd\x42\x1f\xe0\x6e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a64d00 brk(0x555555a85d00) = 0x555555a85d00 brk(0x555555a86000) = 0x555555a86000 mprotect(0x7fd26a8df000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("./syzkaller.lHJJ0a", 0700) = 0 chmod("./syzkaller.lHJJ0a", 0777) = 0 chdir("./syzkaller.lHJJ0a") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5067 attached , child_tidptr=0x555555a64650) = 5067 [pid 5067] set_robust_list(0x555555a64660, 24) = 0 [pid 5067] chdir("./0") = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5067] memfd_create("syzkaller", 0) = 3 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5067] munmap(0x7fd262400000, 138412032) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5067] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5067] close(3) = 0 [pid 5067] close(4) = 0 [pid 5067] mkdir("./file1", 0777) = 0 [ 73.443526][ T5067] loop0: detected capacity change from 0 to 512 [pid 5067] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5067] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5067] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5067] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5067] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5067] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5067] exit_group(0) = ? [ 73.494522][ T5067] EXT4-fs (loop0): 1 truncate cleaned up [ 73.500536][ T5067] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5067] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 73.596046][ T5066] 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 5071 attached , child_tidptr=0x555555a64650) = 5071 [pid 5071] set_robust_list(0x555555a64660, 24) = 0 [pid 5071] chdir("./1") = 0 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setpgid(0, 0) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1000", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5071] memfd_create("syzkaller", 0) = 3 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5071] munmap(0x7fd262400000, 138412032) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5071] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5071] close(3) = 0 [pid 5071] close(4) = 0 [pid 5071] mkdir("./file1", 0777) = 0 [ 73.804068][ T5071] loop0: detected capacity change from 0 to 512 [pid 5071] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5071] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5071] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5071] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5071] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5071] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5071] exit_group(0) = ? [ 73.851159][ T5071] EXT4-fs (loop0): 1 truncate cleaned up [ 73.856920][ T5071] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5071] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 [ 73.967750][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./1") = 0 mkdir("./2", 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 5074 attached , child_tidptr=0x555555a64650) = 5074 [pid 5074] set_robust_list(0x555555a64660, 24) = 0 [pid 5074] chdir("./2") = 0 [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] setpgid(0, 0) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5074] write(3, "1000", 4) = 4 [pid 5074] close(3) = 0 [pid 5074] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5074] memfd_create("syzkaller", 0) = 3 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5074] munmap(0x7fd262400000, 138412032) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5074] close(3) = 0 [pid 5074] close(4) = 0 [pid 5074] mkdir("./file1", 0777) = 0 [ 74.149401][ T5074] loop0: detected capacity change from 0 to 512 [pid 5074] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5074] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5074] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5074] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5074] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5074] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5074] exit_group(0) = ? [pid 5074] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 [ 74.194769][ T5074] EXT4-fs (loop0): 1 truncate cleaned up [ 74.200580][ T5074] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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/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 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 74.268618][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./2/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5076 attached , child_tidptr=0x555555a64650) = 5076 [pid 5076] set_robust_list(0x555555a64660, 24) = 0 [pid 5076] chdir("./3") = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5076] setpgid(0, 0) = 0 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5076] write(3, "1000", 4) = 4 [pid 5076] close(3) = 0 [pid 5076] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5076] memfd_create("syzkaller", 0) = 3 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5076] munmap(0x7fd262400000, 138412032) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5076] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5076] close(3) = 0 [pid 5076] close(4) = 0 [pid 5076] mkdir("./file1", 0777) = 0 [ 74.441686][ T5076] loop0: detected capacity change from 0 to 512 [pid 5076] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5076] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5076] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5076] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5076] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5076] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5076] exit_group(0) = ? [pid 5076] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 umount2("./3/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 74.486648][ T5076] EXT4-fs (loop0): 1 truncate cleaned up [ 74.492552][ T5076] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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/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 umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 74.609958][ T5066] 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=0x555555a64650) = 5078 [pid 5078] set_robust_list(0x555555a64660, 24) = 0 [pid 5078] chdir("./4") = 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] memfd_create("syzkaller", 0) = 3 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5078] munmap(0x7fd262400000, 138412032) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5078] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5078] close(3) = 0 [pid 5078] close(4) = 0 [pid 5078] mkdir("./file1", 0777) = 0 [ 74.803484][ T5078] loop0: detected capacity change from 0 to 512 [ 74.838815][ T5078] EXT4-fs (loop0): 1 truncate cleaned up [pid 5078] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5078] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5078] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5078] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [ 74.844595][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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 */} --- umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 74.972062][ T5066] 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 5080 attached [pid 5080] set_robust_list(0x555555a64660, 24) = 0 [pid 5080] chdir("./5" [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5080 [pid 5080] <... chdir resumed>) = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] setpgid(0, 0) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1000", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5080] memfd_create("syzkaller", 0) = 3 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5080] munmap(0x7fd262400000, 138412032) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5080] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5080] close(3) = 0 [pid 5080] close(4) = 0 [pid 5080] mkdir("./file1", 0777) = 0 [ 75.144614][ T5080] loop0: detected capacity change from 0 to 512 [pid 5080] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5080] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5080] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5080] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5080] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5080] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5080] exit_group(0) = ? [ 75.190533][ T5080] EXT4-fs (loop0): 1 truncate cleaned up [ 75.196488][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5080] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 75.315342][ T5066] 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 5082 attached , child_tidptr=0x555555a64650) = 5082 [pid 5082] set_robust_list(0x555555a64660, 24) = 0 [pid 5082] chdir("./6") = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5082] memfd_create("syzkaller", 0) = 3 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5082] munmap(0x7fd262400000, 138412032) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5082] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5082] close(3) = 0 [pid 5082] close(4) = 0 [pid 5082] mkdir("./file1", 0777) = 0 [ 75.479580][ T5082] loop0: detected capacity change from 0 to 512 [pid 5082] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5082] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5082] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5082] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5082] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5082] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5082] exit_group(0) = ? [pid 5082] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [ 75.523625][ T5082] EXT4-fs (loop0): 1 truncate cleaned up [ 75.529432][ T5082] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 75.620207][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./6/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 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=0x555555a64650) = 5084 [pid 5084] set_robust_list(0x555555a64660, 24) = 0 [pid 5084] chdir("./7") = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5084] setpgid(0, 0) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5084] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5084] memfd_create("syzkaller", 0) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5084] munmap(0x7fd262400000, 138412032) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] close(4) = 0 [pid 5084] mkdir("./file1", 0777) = 0 [ 75.808888][ T5084] loop0: detected capacity change from 0 to 512 [ 75.846221][ T5084] EXT4-fs (loop0): 1 truncate cleaned up [pid 5084] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5084] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5084] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5084] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5084] exit_group(0) = ? [pid 5084] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 [ 75.851994][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 [ 75.896295][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./7") = 0 mkdir("./8", 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 5086 attached , child_tidptr=0x555555a64650) = 5086 [pid 5086] set_robust_list(0x555555a64660, 24) = 0 [pid 5086] chdir("./8") = 0 [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5086] setpgid(0, 0) = 0 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5086] write(3, "1000", 4) = 4 [pid 5086] close(3) = 0 [pid 5086] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5086] memfd_create("syzkaller", 0) = 3 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5086] munmap(0x7fd262400000, 138412032) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5086] close(3) = 0 [pid 5086] close(4) = 0 [pid 5086] mkdir("./file1", 0777) = 0 [ 76.109808][ T5086] loop0: detected capacity change from 0 to 512 [ 76.145884][ T5086] EXT4-fs (loop0): 1 truncate cleaned up [pid 5086] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5086] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5086] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5086] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5086] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5086] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5086] exit_group(0) = ? [pid 5086] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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 [ 76.151744][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 76.242671][ T5066] 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 5088 attached [pid 5088] set_robust_list(0x555555a64660, 24) = 0 [pid 5088] chdir("./9" [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5088 [pid 5088] <... chdir resumed>) = 0 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5088] memfd_create("syzkaller", 0) = 3 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5088] munmap(0x7fd262400000, 138412032) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5088] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5088] close(3) = 0 [pid 5088] close(4) = 0 [pid 5088] mkdir("./file1", 0777) = 0 [ 76.396436][ T5088] loop0: detected capacity change from 0 to 512 [ 76.431890][ T5088] EXT4-fs (loop0): 1 truncate cleaned up [pid 5088] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5088] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5088] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5088] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5088] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5088] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5088] exit_group(0) = ? [ 76.437757][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5088] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 [ 76.576300][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./9/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x555555a64660, 24) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5090 [pid 5090] chdir("./10") = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5090] munmap(0x7fd262400000, 138412032) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] close(4) = 0 [pid 5090] mkdir("./file1", 0777) = 0 [ 76.801905][ T5090] loop0: detected capacity change from 0 to 512 [ 76.835924][ T5090] EXT4-fs (loop0): 1 truncate cleaned up [pid 5090] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5090] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5090] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5090] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5090] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./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 [ 76.842024][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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) newfstatat(AT_FDCWD, "./10/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/cgroup.controllers") = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 [ 76.943943][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5092 attached , child_tidptr=0x555555a64650) = 5092 [pid 5092] set_robust_list(0x555555a64660, 24) = 0 [pid 5092] chdir("./11") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5092] munmap(0x7fd262400000, 138412032) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] close(4) = 0 [pid 5092] mkdir("./file1", 0777) = 0 [ 77.149794][ T5092] loop0: detected capacity change from 0 to 512 [ 77.184711][ T5092] EXT4-fs (loop0): 1 truncate cleaned up [pid 5092] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5092] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5092] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5092] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5092] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5092] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5092] exit_group(0) = ? [ 77.190623][ T5092] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5092] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file1") = 0 [ 77.293640][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 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=0x555555a64650) = 5094 [pid 5094] set_robust_list(0x555555a64660, 24) = 0 [pid 5094] chdir("./12") = 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] memfd_create("syzkaller", 0) = 3 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5094] munmap(0x7fd262400000, 138412032) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] close(4) = 0 [pid 5094] mkdir("./file1", 0777) = 0 [ 77.464936][ T5094] loop0: detected capacity change from 0 to 512 [pid 5094] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5094] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5094] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 77.505774][ T5094] EXT4-fs (loop0): 1 truncate cleaned up [ 77.511654][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 77.614781][ T5066] 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 5096 attached , child_tidptr=0x555555a64650) = 5096 [pid 5096] set_robust_list(0x555555a64660, 24) = 0 [pid 5096] chdir("./13") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5096] munmap(0x7fd262400000, 138412032) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] close(4) = 0 [pid 5096] mkdir("./file1", 0777) = 0 [ 77.782431][ T5096] loop0: detected capacity change from 0 to 512 [pid 5096] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5096] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5096] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5096] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5096] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5096] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5096] exit_group(0) = ? [ 77.827596][ T5096] EXT4-fs (loop0): 1 truncate cleaned up [ 77.833334][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 77.954274][ T5066] 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 5098 attached , child_tidptr=0x555555a64650) = 5098 [pid 5098] set_robust_list(0x555555a64660, 24) = 0 [pid 5098] chdir("./14") = 0 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5098] setpgid(0, 0) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5098] memfd_create("syzkaller", 0) = 3 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5098] munmap(0x7fd262400000, 138412032) = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5098] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5098] close(3) = 0 [pid 5098] close(4) = 0 [pid 5098] mkdir("./file1", 0777) = 0 [ 78.199938][ T5098] loop0: detected capacity change from 0 to 512 [pid 5098] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5098] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5098] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5098] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5098] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5098] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5098] exit_group(0) = ? [pid 5098] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 [ 78.253609][ T5098] EXT4-fs (loop0): 1 truncate cleaned up [ 78.259687][ T5098] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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 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 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 78.375344][ T5066] 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=0x555555a64650) = 5100 [pid 5100] set_robust_list(0x555555a64660, 24) = 0 [pid 5100] chdir("./15") = 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] memfd_create("syzkaller", 0) = 3 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5100] munmap(0x7fd262400000, 138412032) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5100] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5100] close(3) = 0 [pid 5100] close(4) = 0 [pid 5100] mkdir("./file1", 0777) = 0 [pid 5100] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5100] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5100] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5100] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 78.563056][ T5100] loop0: detected capacity change from 0 to 512 [ 78.589960][ T5100] EXT4-fs (loop0): 1 truncate cleaned up [ 78.596127][ T5100] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 78.700254][ T5066] 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 5102 attached , child_tidptr=0x555555a64650) = 5102 [pid 5102] set_robust_list(0x555555a64660, 24) = 0 [pid 5102] chdir("./16") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5102] munmap(0x7fd262400000, 138412032) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] close(4) = 0 [pid 5102] mkdir("./file1", 0777) = 0 [ 78.853065][ T5102] loop0: detected capacity change from 0 to 512 [pid 5102] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5102] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5102] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5102] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5102] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5102] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 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 [ 78.905424][ T5102] EXT4-fs (loop0): 1 truncate cleaned up [ 78.911261][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 [ 79.001690][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 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, child_tidptr=0x555555a64650) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5104] set_robust_list(0x555555a64660, 24) = 0 [pid 5104] chdir("./17") = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] memfd_create("syzkaller", 0) = 3 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5104] munmap(0x7fd262400000, 138412032) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5104] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5104] close(3) = 0 [pid 5104] close(4) = 0 [pid 5104] mkdir("./file1", 0777) = 0 [ 79.242901][ T5104] loop0: detected capacity change from 0 to 512 [pid 5104] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5104] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5104] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5104] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5104] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5104] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5104] exit_group(0) = ? [ 79.289246][ T5104] EXT4-fs (loop0): 1 truncate cleaned up [ 79.295034][ T5104] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 [ 79.418005][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a64650) = 5106 ./strace-static-x86_64: Process 5106 attached [pid 5106] set_robust_list(0x555555a64660, 24) = 0 [pid 5106] chdir("./18") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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] memfd_create("syzkaller", 0) = 3 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5106] munmap(0x7fd262400000, 138412032) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] close(4) = 0 [pid 5106] mkdir("./file1", 0777) = 0 [pid 5106] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5106] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5106] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5106] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5106] exit_group(0) = ? [ 79.671213][ T5106] loop0: detected capacity change from 0 to 512 [ 79.698007][ T5106] EXT4-fs (loop0): 1 truncate cleaned up [ 79.703802][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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=3 /* 0.03 s */} --- umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 79.813601][ T5066] 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 5108 attached , child_tidptr=0x555555a64650) = 5108 [pid 5108] set_robust_list(0x555555a64660, 24) = 0 [pid 5108] chdir("./19") = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5108] munmap(0x7fd262400000, 138412032) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] close(4) = 0 [pid 5108] mkdir("./file1", 0777) = 0 [ 80.019824][ T5108] loop0: detected capacity change from 0 to 512 [ 80.055990][ T5108] EXT4-fs (loop0): 1 truncate cleaned up [pid 5108] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5108] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5108] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5108] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5108] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5108] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5108] exit_group(0) = ? [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 80.061952][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 80.164210][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./19/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5110 attached , child_tidptr=0x555555a64650) = 5110 [pid 5110] set_robust_list(0x555555a64660, 24) = 0 [pid 5110] chdir("./20") = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5110] write(3, "1000", 4) = 4 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] memfd_create("syzkaller", 0) = 3 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5110] munmap(0x7fd262400000, 138412032) = 0 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5110] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5110] close(3) = 0 [pid 5110] close(4) = 0 [pid 5110] mkdir("./file1", 0777) = 0 [ 80.350919][ T5110] loop0: detected capacity change from 0 to 512 [pid 5110] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5110] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5110] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5110] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5110] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5110] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5110] exit_group(0) = ? [pid 5110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 [ 80.405630][ T5110] EXT4-fs (loop0): 1 truncate cleaned up [ 80.411430][ T5110] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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/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 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 80.543536][ T5066] 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 5112 attached , child_tidptr=0x555555a64650) = 5112 [pid 5112] set_robust_list(0x555555a64660, 24) = 0 [pid 5112] chdir("./21") = 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] memfd_create("syzkaller", 0) = 3 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5112] munmap(0x7fd262400000, 138412032) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5112] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5112] close(3) = 0 [pid 5112] close(4) = 0 [pid 5112] mkdir("./file1", 0777) = 0 [ 80.750010][ T5112] loop0: detected capacity change from 0 to 512 [pid 5112] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5112] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 80.798035][ T5112] EXT4-fs (loop0): 1 truncate cleaned up [ 80.803716][ T5112] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5112] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5112] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=4 /* 0.04 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 80.935255][ T5066] 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 5114 attached , child_tidptr=0x555555a64650) = 5114 [pid 5114] set_robust_list(0x555555a64660, 24) = 0 [pid 5114] chdir("./22") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5114] munmap(0x7fd262400000, 138412032) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] close(4) = 0 [pid 5114] mkdir("./file1", 0777) = 0 [pid 5114] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5114] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5114] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5114] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5114] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5114] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5114] exit_group(0) = ? [ 81.101491][ T5114] loop0: detected capacity change from 0 to 512 [ 81.132365][ T5114] EXT4-fs (loop0): 1 truncate cleaned up [ 81.138319][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 81.300189][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5116 attached [pid 5116] set_robust_list(0x555555a64660, 24) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5116 [pid 5116] chdir("./23") = 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] memfd_create("syzkaller", 0) = 3 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5116] munmap(0x7fd262400000, 138412032) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5116] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5116] close(3) = 0 [pid 5116] close(4) = 0 [pid 5116] mkdir("./file1", 0777) = 0 [ 81.626864][ T5116] loop0: detected capacity change from 0 to 512 [pid 5116] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5116] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5116] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5116] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 81.684988][ T5116] EXT4-fs (loop0): 1 truncate cleaned up [ 81.697966][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 81.871318][ T5066] 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 5118 attached [pid 5118] set_robust_list(0x555555a64660, 24) = 0 [pid 5118] chdir("./24" [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5118 [pid 5118] <... chdir resumed>) = 0 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5118] setpgid(0, 0) = 0 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5118] write(3, "1000", 4) = 4 [pid 5118] close(3) = 0 [pid 5118] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5118] memfd_create("syzkaller", 0) = 3 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5118] munmap(0x7fd262400000, 138412032) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5118] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5118] close(3) = 0 [pid 5118] close(4) = 0 [pid 5118] mkdir("./file1", 0777) = 0 [ 82.032908][ T5118] loop0: detected capacity change from 0 to 512 [ 82.067962][ T5118] EXT4-fs (loop0): 1 truncate cleaned up [pid 5118] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5118] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5118] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5118] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5118] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5118] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [ 82.073719][ T5118] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5118] exit_group(0) = ? [pid 5118] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 82.184982][ T5066] 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 5120 attached , child_tidptr=0x555555a64650) = 5120 [pid 5120] set_robust_list(0x555555a64660, 24) = 0 [pid 5120] chdir("./25") = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5120] munmap(0x7fd262400000, 138412032) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] close(4) = 0 [pid 5120] mkdir("./file1", 0777) = 0 [pid 5120] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5120] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5120] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5120] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5120] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5120] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5120] exit_group(0) = ? [ 82.351843][ T5120] loop0: detected capacity change from 0 to 512 [ 82.380419][ T5120] EXT4-fs (loop0): 1 truncate cleaned up [ 82.386169][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 umount2("./25/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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/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 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 [ 82.490011][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./25/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 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=0x555555a64650) = 5122 [pid 5122] set_robust_list(0x555555a64660, 24) = 0 [pid 5122] chdir("./26") = 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] memfd_create("syzkaller", 0) = 3 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5122] munmap(0x7fd262400000, 138412032) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5122] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5122] close(3) = 0 [pid 5122] close(4) = 0 [pid 5122] mkdir("./file1", 0777) = 0 [ 82.693293][ T5122] loop0: detected capacity change from 0 to 512 [ 82.733235][ T5122] EXT4-fs (loop0): 1 truncate cleaned up [pid 5122] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5122] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5122] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5122] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=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 [ 82.739035][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 82.871404][ T5066] 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 [pid 5125] set_robust_list(0x555555a64660, 24 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5125 [pid 5125] <... set_robust_list resumed>) = 0 [pid 5125] chdir("./27") = 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] memfd_create("syzkaller", 0) = 3 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5125] munmap(0x7fd262400000, 138412032) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5125] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5125] close(3) = 0 [pid 5125] close(4) = 0 [pid 5125] mkdir("./file1", 0777) = 0 [ 83.012487][ T5125] loop0: detected capacity change from 0 to 512 [pid 5125] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5125] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5125] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5125] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=4 /* 0.04 s */} --- [ 83.055403][ T5125] EXT4-fs (loop0): 1 truncate cleaned up [ 83.061297][ T5125] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 unlink("./27/cpuset.effective_cpus") = 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 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 [ 83.171179][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./27/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 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 5127 attached , child_tidptr=0x555555a64650) = 5127 [pid 5127] set_robust_list(0x555555a64660, 24) = 0 [pid 5127] chdir("./28") = 0 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5127] setpgid(0, 0) = 0 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5127] write(3, "1000", 4) = 4 [pid 5127] close(3) = 0 [pid 5127] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5127] memfd_create("syzkaller", 0) = 3 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5127] munmap(0x7fd262400000, 138412032) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5127] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5127] close(3) = 0 [pid 5127] close(4) = 0 [pid 5127] mkdir("./file1", 0777) = 0 [ 83.442557][ T5127] loop0: detected capacity change from 0 to 512 [pid 5127] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5127] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5127] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5127] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5127] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5127] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5127] exit_group(0) = ? [pid 5127] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 83.513058][ T5127] EXT4-fs (loop0): 1 truncate cleaned up [ 83.519259][ T5127] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file1") = 0 [ 83.655766][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 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 5129 attached [pid 5129] set_robust_list(0x555555a64660, 24) = 0 [pid 5129] chdir("./29") = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5129 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5129] munmap(0x7fd262400000, 138412032) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5129] close(3) = 0 [pid 5129] close(4) = 0 [pid 5129] mkdir("./file1", 0777) = 0 [ 83.826176][ T5129] loop0: detected capacity change from 0 to 512 [pid 5129] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5129] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5129] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5129] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5129] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5129] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5129] exit_group(0) = ? [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 83.870891][ T5129] EXT4-fs (loop0): 1 truncate cleaned up [ 83.876572][ T5129] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 84.005897][ T5066] 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=0x555555a64650) = 5131 [pid 5131] set_robust_list(0x555555a64660, 24) = 0 [pid 5131] chdir("./30") = 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] memfd_create("syzkaller", 0) = 3 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5131] munmap(0x7fd262400000, 138412032) = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5131] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5131] close(3) = 0 [pid 5131] close(4) = 0 [pid 5131] mkdir("./file1", 0777) = 0 [pid 5131] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5131] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5131] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5131] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 84.240736][ T5131] loop0: detected capacity change from 0 to 512 [ 84.270487][ T5131] EXT4-fs (loop0): 1 truncate cleaned up [ 84.276375][ T5131] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 [ 84.394145][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./30") = 0 mkdir("./31", 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 5133 attached , child_tidptr=0x555555a64650) = 5133 [pid 5133] set_robust_list(0x555555a64660, 24) = 0 [pid 5133] chdir("./31") = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5133] write(3, "1000", 4) = 4 [pid 5133] close(3) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5133] memfd_create("syzkaller", 0) = 3 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5133] munmap(0x7fd262400000, 138412032) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5133] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5133] close(3) = 0 [pid 5133] close(4) = 0 [pid 5133] mkdir("./file1", 0777) = 0 [ 84.579403][ T5133] loop0: detected capacity change from 0 to 512 [pid 5133] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5133] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5133] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5133] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5133] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5133] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5133] exit_group(0) = ? [pid 5133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [ 84.623926][ T5133] EXT4-fs (loop0): 1 truncate cleaned up [ 84.630174][ T5133] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 [ 84.749858][ T5066] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5136 attached , child_tidptr=0x555555a64650) = 5136 [pid 5136] set_robust_list(0x555555a64660, 24) = 0 [pid 5136] chdir("./32") = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5136] setpgid(0, 0) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5136] write(3, "1000", 4) = 4 [pid 5136] close(3) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5136] memfd_create("syzkaller", 0) = 3 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5136] munmap(0x7fd262400000, 138412032) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5136] close(3) = 0 [pid 5136] close(4) = 0 [pid 5136] mkdir("./file1", 0777) = 0 [ 84.954414][ T5136] loop0: detected capacity change from 0 to 512 [pid 5136] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5136] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5136] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5136] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5136] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5136] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5136] exit_group(0) = ? [pid 5136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 [ 85.009668][ T5136] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5138 attached , child_tidptr=0x555555a64650) = 5138 [pid 5138] set_robust_list(0x555555a64660, 24) = 0 [pid 5138] chdir("./33") = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5138] write(3, "1000", 4) = 4 [pid 5138] close(3) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5138] munmap(0x7fd262400000, 138412032) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5138] close(3) = 0 [pid 5138] close(4) = 0 [pid 5138] mkdir("./file1", 0777) = 0 [ 85.345397][ T5138] loop0: detected capacity change from 0 to 512 [pid 5138] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5138] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5138] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5138] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5138] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5138] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5138] exit_group(0) = ? [pid 5138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 [ 85.387611][ T5138] EXT4-fs (loop0): 1 truncate cleaned up 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/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 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5140 attached , child_tidptr=0x555555a64650) = 5140 [pid 5140] set_robust_list(0x555555a64660, 24) = 0 [pid 5140] chdir("./34") = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] memfd_create("syzkaller", 0) = 3 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5140] munmap(0x7fd262400000, 138412032) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5140] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5140] close(3) = 0 [pid 5140] close(4) = 0 [pid 5140] mkdir("./file1", 0777) = 0 [pid 5140] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5140] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5140] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5140] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=3 /* 0.03 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 [ 85.619615][ T5140] loop0: detected capacity change from 0 to 512 [ 85.653069][ T5140] EXT4-fs (loop0): 1 truncate cleaned up umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5142 attached , child_tidptr=0x555555a64650) = 5142 [pid 5142] set_robust_list(0x555555a64660, 24) = 0 [pid 5142] chdir("./35") = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] setpgid(0, 0) = 0 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3) = 0 [pid 5142] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5142] memfd_create("syzkaller", 0) = 3 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5142] munmap(0x7fd262400000, 138412032) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5142] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5142] close(3) = 0 [pid 5142] close(4) = 0 [pid 5142] mkdir("./file1", 0777) = 0 [pid 5142] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5142] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5142] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5142] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5142] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5142] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5142] exit_group(0) = ? [ 85.880528][ T5142] loop0: detected capacity change from 0 to 512 [ 85.915410][ T5142] EXT4-fs (loop0): 1 truncate cleaned up [pid 5142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file1") = 0 getdents64(3, 0x555555a656f0 /* 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, child_tidptr=0x555555a64650) = 5144 ./strace-static-x86_64: Process 5144 attached [pid 5144] set_robust_list(0x555555a64660, 24) = 0 [pid 5144] chdir("./36") = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] write(3, "1000", 4) = 4 [pid 5144] close(3) = 0 [pid 5144] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5144] memfd_create("syzkaller", 0) = 3 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5144] munmap(0x7fd262400000, 138412032) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5144] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5144] close(3) = 0 [pid 5144] close(4) = 0 [pid 5144] mkdir("./file1", 0777) = 0 [pid 5144] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5144] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5144] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5144] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5144] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 86.258842][ T5144] loop0: detected capacity change from 0 to 512 [ 86.291850][ T5144] EXT4-fs (loop0): 1 truncate cleaned up [pid 5144] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5144] exit_group(0) = ? [pid 5144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file1") = 0 getdents64(3, 0x555555a656f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 86.380095][ T928] cfg80211: failed to load regulatory.db 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 5146 attached , child_tidptr=0x555555a64650) = 5146 [pid 5146] set_robust_list(0x555555a64660, 24) = 0 [pid 5146] chdir("./37") = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [pid 5146] close(3) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5146] memfd_create("syzkaller", 0) = 3 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5146] munmap(0x7fd262400000, 138412032) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5146] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5146] close(3) = 0 [pid 5146] close(4) = 0 [pid 5146] mkdir("./file1", 0777) = 0 [ 86.561021][ T5146] loop0: detected capacity change from 0 to 512 [pid 5146] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5146] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5146] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5146] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5146] exit_group(0) = ? [ 86.604932][ T5146] EXT4-fs (loop0): 1 truncate cleaned up [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 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 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5148 attached , child_tidptr=0x555555a64650) = 5148 [pid 5148] set_robust_list(0x555555a64660, 24) = 0 [pid 5148] chdir("./38") = 0 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5148] setpgid(0, 0) = 0 [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] write(3, "1000", 4) = 4 [pid 5148] close(3) = 0 [pid 5148] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5148] memfd_create("syzkaller", 0) = 3 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5148] munmap(0x7fd262400000, 138412032) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5148] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5148] close(3) = 0 [pid 5148] close(4) = 0 [pid 5148] mkdir("./file1", 0777) = 0 [pid 5148] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5148] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5148] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5148] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5148] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5148] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5148] exit_group(0) = ? [pid 5148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 umount2("./38/cpuset.effective_cpus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 86.873647][ T5148] loop0: detected capacity change from 0 to 512 [ 86.893959][ T5148] EXT4-fs (loop0): 1 truncate cleaned up 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/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 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5150 attached , child_tidptr=0x555555a64650) = 5150 [pid 5150] set_robust_list(0x555555a64660, 24) = 0 [pid 5150] chdir("./39") = 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] memfd_create("syzkaller", 0) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5150] munmap(0x7fd262400000, 138412032) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5150] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5150] close(3) = 0 [pid 5150] close(4) = 0 [pid 5150] mkdir("./file1", 0777) = 0 [ 87.259221][ T5150] loop0: detected capacity change from 0 to 512 [pid 5150] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5150] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5150] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5150] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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("./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, 0x555555a656f0 /* 6 entries */, 32768) = 200 [ 87.300661][ T5150] EXT4-fs (loop0): 1 truncate cleaned up 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/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 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5152 attached , child_tidptr=0x555555a64650) = 5152 [pid 5152] set_robust_list(0x555555a64660, 24) = 0 [pid 5152] chdir("./40") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5152] memfd_create("syzkaller", 0) = 3 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5152] munmap(0x7fd262400000, 138412032) = 0 [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5152] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5152] close(3) = 0 [pid 5152] close(4) = 0 [pid 5152] mkdir("./file1", 0777) = 0 [pid 5152] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5152] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5152] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5152] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 87.576537][ T5152] loop0: detected capacity change from 0 to 512 [ 87.612554][ T5152] EXT4-fs (loop0): 1 truncate cleaned up [pid 5152] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5152] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5152] exit_group(0) = ? [pid 5152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5155 attached , child_tidptr=0x555555a64650) = 5155 [pid 5155] set_robust_list(0x555555a64660, 24) = 0 [pid 5155] chdir("./41") = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5155] memfd_create("syzkaller", 0) = 3 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5155] munmap(0x7fd262400000, 138412032) = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5155] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5155] close(3) = 0 [pid 5155] close(4) = 0 [pid 5155] mkdir("./file1", 0777) = 0 [pid 5155] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5155] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5155] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5155] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5155] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5155] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5155] exit_group(0) = ? [ 87.945302][ T5155] loop0: detected capacity change from 0 to 512 [ 87.983814][ T5155] EXT4-fs (loop0): 1 truncate cleaned up [pid 5155] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5157 attached , child_tidptr=0x555555a64650) = 5157 [pid 5157] set_robust_list(0x555555a64660, 24) = 0 [pid 5157] chdir("./42") = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5157] setpgid(0, 0) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5157] memfd_create("syzkaller", 0) = 3 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5157] munmap(0x7fd262400000, 138412032) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5157] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5157] close(3) = 0 [pid 5157] close(4) = 0 [pid 5157] mkdir("./file1", 0777) = 0 [pid 5157] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5157] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5157] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5157] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5157] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 88.291292][ T5157] loop0: detected capacity change from 0 to 512 [ 88.328374][ T5157] EXT4-fs (loop0): 1 truncate cleaned up [pid 5157] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5157] exit_group(0) = ? [pid 5157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5159 attached , child_tidptr=0x555555a64650) = 5159 [pid 5159] set_robust_list(0x555555a64660, 24) = 0 [pid 5159] chdir("./43") = 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] memfd_create("syzkaller", 0) = 3 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5159] munmap(0x7fd262400000, 138412032) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5159] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5159] close(3) = 0 [pid 5159] close(4) = 0 [pid 5159] mkdir("./file1", 0777) = 0 [ 88.640412][ T5159] loop0: detected capacity change from 0 to 512 [pid 5159] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5159] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5159] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5159] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=4 /* 0.04 s */} --- [ 88.681993][ T5159] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5161 attached [pid 5161] set_robust_list(0x555555a64660, 24 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5161 [pid 5161] <... set_robust_list resumed>) = 0 [pid 5161] chdir("./44") = 0 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5161] setpgid(0, 0) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5161] write(3, "1000", 4) = 4 [pid 5161] close(3) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5161] memfd_create("syzkaller", 0) = 3 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5161] munmap(0x7fd262400000, 138412032) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5161] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5161] close(3) = 0 [pid 5161] close(4) = 0 [pid 5161] mkdir("./file1", 0777) = 0 [ 89.001738][ T5161] loop0: detected capacity change from 0 to 512 [pid 5161] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5161] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5161] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5161] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5161] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5161] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5161] exit_group(0) = ? [pid 5161] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 89.054360][ T5161] EXT4-fs (loop0): 1 truncate cleaned up umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file1") = 0 getdents64(3, 0x555555a656f0 /* 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./strace-static-x86_64: Process 5163 attached [pid 5163] set_robust_list(0x555555a64660, 24) = 0 [pid 5163] chdir("./45") = 0 [pid 5066] <... clone resumed>, child_tidptr=0x555555a64650) = 5163 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5163] setpgid(0, 0) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5163] write(3, "1000", 4) = 4 [pid 5163] close(3) = 0 [pid 5163] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5163] memfd_create("syzkaller", 0) = 3 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5163] munmap(0x7fd262400000, 138412032) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5163] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5163] close(3) = 0 [pid 5163] close(4) = 0 [pid 5163] mkdir("./file1", 0777) = 0 [pid 5163] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5163] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5163] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5163] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 89.249950][ T5163] loop0: detected capacity change from 0 to 512 [ 89.284713][ T5163] EXT4-fs (loop0): 1 truncate cleaned up [pid 5163] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5163] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5163] exit_group(0) = ? [pid 5163] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5165 attached , child_tidptr=0x555555a64650) = 5165 [pid 5165] set_robust_list(0x555555a64660, 24) = 0 [pid 5165] chdir("./46") = 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] memfd_create("syzkaller", 0) = 3 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5165] munmap(0x7fd262400000, 138412032) = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5165] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5165] close(3) = 0 [pid 5165] close(4) = 0 [pid 5165] mkdir("./file1", 0777) = 0 [pid 5165] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5165] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5165] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5165] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5165] exit_group(0) = ? [ 89.609457][ T5165] loop0: detected capacity change from 0 to 512 [ 89.643132][ T5165] EXT4-fs (loop0): 1 truncate cleaned up [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=2 /* 0.02 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5167 attached , child_tidptr=0x555555a64650) = 5167 [pid 5167] set_robust_list(0x555555a64660, 24) = 0 [pid 5167] chdir("./47") = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5167] write(3, "1000", 4) = 4 [pid 5167] close(3) = 0 [pid 5167] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5167] memfd_create("syzkaller", 0) = 3 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5167] munmap(0x7fd262400000, 138412032) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5167] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5167] close(3) = 0 [pid 5167] close(4) = 0 [pid 5167] mkdir("./file1", 0777) = 0 [ 89.951027][ T5167] loop0: detected capacity change from 0 to 512 [pid 5167] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5167] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5167] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5167] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5167] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5167] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5167] exit_group(0) = ? [pid 5167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 89.995396][ T5167] EXT4-fs (loop0): 1 truncate cleaned up newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5169 attached , child_tidptr=0x555555a64650) = 5169 [pid 5169] set_robust_list(0x555555a64660, 24) = 0 [pid 5169] chdir("./48") = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5169] setpgid(0, 0) = 0 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5169] memfd_create("syzkaller", 0) = 3 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5169] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5169] munmap(0x7fd262400000, 138412032) = 0 [pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5169] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5169] close(3) = 0 [pid 5169] close(4) = 0 [pid 5169] mkdir("./file1", 0777) = 0 [pid 5169] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5169] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5169] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5169] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5169] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5169] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5169] exit_group(0) = ? [pid 5169] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 90.333216][ T5169] loop0: detected capacity change from 0 to 512 [ 90.365878][ T5169] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5171 attached , child_tidptr=0x555555a64650) = 5171 [pid 5171] set_robust_list(0x555555a64660, 24) = 0 [pid 5171] chdir("./49") = 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] memfd_create("syzkaller", 0) = 3 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5171] munmap(0x7fd262400000, 138412032) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5171] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5171] close(3) = 0 [pid 5171] close(4) = 0 [pid 5171] mkdir("./file1", 0777) = 0 [pid 5171] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5171] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5171] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5171] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 90.660288][ T5171] loop0: detected capacity change from 0 to 512 [ 90.696704][ T5171] EXT4-fs (loop0): 1 truncate cleaned up [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=2 /* 0.02 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5173 attached , child_tidptr=0x555555a64650) = 5173 [pid 5173] set_robust_list(0x555555a64660, 24) = 0 [pid 5173] chdir("./50") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5173] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5173] munmap(0x7fd262400000, 138412032) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] close(4) = 0 [pid 5173] mkdir("./file1", 0777) = 0 [ 90.966357][ T5173] loop0: detected capacity change from 0 to 512 [pid 5173] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5173] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5173] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5173] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5173] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5173] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 [ 91.022177][ T5173] EXT4-fs (loop0): 1 truncate cleaned up 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 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file1") = 0 getdents64(3, 0x555555a656f0 /* 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, child_tidptr=0x555555a64650) = 5175 ./strace-static-x86_64: Process 5175 attached [pid 5175] set_robust_list(0x555555a64660, 24) = 0 [pid 5175] chdir("./51") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] memfd_create("syzkaller", 0) = 3 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5175] munmap(0x7fd262400000, 138412032) = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5175] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5175] close(3) = 0 [pid 5175] close(4) = 0 [pid 5175] mkdir("./file1", 0777) = 0 [pid 5175] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5175] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5175] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5175] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5175] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5175] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [ 91.308065][ T5175] loop0: detected capacity change from 0 to 512 [ 91.342981][ T5175] EXT4-fs (loop0): 1 truncate cleaned up [pid 5175] exit_group(0) = ? [pid 5175] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5177 attached , child_tidptr=0x555555a64650) = 5177 [pid 5177] set_robust_list(0x555555a64660, 24) = 0 [pid 5177] chdir("./52") = 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] memfd_create("syzkaller", 0) = 3 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5177] munmap(0x7fd262400000, 138412032) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5177] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5177] close(3) = 0 [pid 5177] close(4) = 0 [pid 5177] mkdir("./file1", 0777) = 0 [pid 5177] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5177] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5177] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5177] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=3 /* 0.03 s */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 91.688316][ T5177] loop0: detected capacity change from 0 to 512 [ 91.723217][ T5177] EXT4-fs (loop0): 1 truncate cleaned up umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5179 attached , child_tidptr=0x555555a64650) = 5179 [pid 5179] set_robust_list(0x555555a64660, 24) = 0 [pid 5179] chdir("./53") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5179] munmap(0x7fd262400000, 138412032) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] close(4) = 0 [pid 5179] mkdir("./file1", 0777) = 0 [pid 5179] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5179] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5179] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5179] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5179] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5179] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5179] exit_group(0) = ? [ 91.893814][ T5179] loop0: detected capacity change from 0 to 512 [ 91.929313][ T5179] EXT4-fs (loop0): 1 truncate cleaned up [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5181 attached , child_tidptr=0x555555a64650) = 5181 [pid 5181] set_robust_list(0x555555a64660, 24) = 0 [pid 5181] chdir("./54") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] setpgid(0, 0) = 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] memfd_create("syzkaller", 0) = 3 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5181] munmap(0x7fd262400000, 138412032) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5181] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5181] close(3) = 0 [pid 5181] close(4) = 0 [pid 5181] mkdir("./file1", 0777) = 0 [pid 5181] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5181] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5181] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5181] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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=2 /* 0.02 s */} --- [ 92.188987][ T5181] loop0: detected capacity change from 0 to 512 [ 92.222786][ T5181] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5183 attached , child_tidptr=0x555555a64650) = 5183 [pid 5183] set_robust_list(0x555555a64660, 24) = 0 [pid 5183] chdir("./55") = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5183] memfd_create("syzkaller", 0) = 3 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5183] munmap(0x7fd262400000, 138412032) = 0 [pid 5183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5183] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5183] close(3) = 0 [pid 5183] close(4) = 0 [pid 5183] mkdir("./file1", 0777) = 0 [ 92.508388][ T5183] loop0: detected capacity change from 0 to 512 [pid 5183] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5183] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5183] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5183] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5183] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5183] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5183] exit_group(0) = ? [pid 5183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 92.551331][ T5183] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 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 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5186 attached , child_tidptr=0x555555a64650) = 5186 [pid 5186] set_robust_list(0x555555a64660, 24) = 0 [pid 5186] chdir("./56") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] memfd_create("syzkaller", 0) = 3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5186] munmap(0x7fd262400000, 138412032) = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5186] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5186] close(3) = 0 [pid 5186] close(4) = 0 [pid 5186] mkdir("./file1", 0777) = 0 [pid 5186] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5186] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5186] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5186] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5186] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5186] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5186] exit_group(0) = ? [ 92.840137][ T5186] loop0: detected capacity change from 0 to 512 [ 92.878220][ T5186] EXT4-fs (loop0): 1 truncate cleaned up [pid 5186] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5188 attached , child_tidptr=0x555555a64650) = 5188 [pid 5188] set_robust_list(0x555555a64660, 24) = 0 [pid 5188] chdir("./57") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5188] munmap(0x7fd262400000, 138412032) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] close(4) = 0 [pid 5188] mkdir("./file1", 0777) = 0 [ 93.150031][ T5188] loop0: detected capacity change from 0 to 512 [pid 5188] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5188] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5188] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5188] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5188] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5188] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 93.191756][ T5188] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5190 attached , child_tidptr=0x555555a64650) = 5190 [pid 5190] set_robust_list(0x555555a64660, 24) = 0 [pid 5190] chdir("./58") = 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] memfd_create("syzkaller", 0) = 3 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5190] munmap(0x7fd262400000, 138412032) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5190] close(3) = 0 [pid 5190] close(4) = 0 [pid 5190] mkdir("./file1", 0777) = 0 [pid 5190] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5190] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5190] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5190] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 93.479668][ T5190] loop0: detected capacity change from 0 to 512 [ 93.512769][ T5190] EXT4-fs (loop0): 1 truncate cleaned up [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [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("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5192 attached , child_tidptr=0x555555a64650) = 5192 [pid 5192] set_robust_list(0x555555a64660, 24) = 0 [pid 5192] chdir("./59") = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] memfd_create("syzkaller", 0) = 3 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5192] munmap(0x7fd262400000, 138412032) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5192] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5192] close(3) = 0 [pid 5192] close(4) = 0 [pid 5192] mkdir("./file1", 0777) = 0 [ 93.861759][ T5192] loop0: detected capacity change from 0 to 512 [pid 5192] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5192] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5192] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5192] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5192] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5192] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5192] exit_group(0) = ? [pid 5192] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 [ 93.905905][ T5192] EXT4-fs (loop0): 1 truncate cleaned up 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 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5194 attached , child_tidptr=0x555555a64650) = 5194 [pid 5194] set_robust_list(0x555555a64660, 24) = 0 [pid 5194] chdir("./60") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5194] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5194] munmap(0x7fd262400000, 138412032) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] close(4) = 0 [pid 5194] mkdir("./file1", 0777) = 0 [pid 5194] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5194] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5194] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5194] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5194] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5194] ioctl(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5194] exit_group(0) = ? [ 94.202984][ T5194] loop0: detected capacity change from 0 to 512 [ 94.237216][ T5194] EXT4-fs (loop0): 1 truncate cleaned up [pid 5194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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/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 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5196 attached , child_tidptr=0x555555a64650) = 5196 [pid 5196] set_robust_list(0x555555a64660, 24) = 0 [pid 5196] chdir("./61") = 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] memfd_create("syzkaller", 0) = 3 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5196] munmap(0x7fd262400000, 138412032) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5196] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5196] close(3) = 0 [pid 5196] close(4) = 0 [pid 5196] mkdir("./file1", 0777) = 0 [pid 5196] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5196] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5196] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5196] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [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(5, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000000) = -1 EINVAL (Invalid argument) [pid 5196] exit_group(0) = ? [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 */} --- 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, 0x555555a656f0 /* 6 entries */, 32768) = 200 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 [ 94.531733][ T5196] loop0: detected capacity change from 0 to 512 [ 94.564569][ T5196] EXT4-fs (loop0): 1 truncate cleaned up unlink("./61/cpuset.effective_cpus") = 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 unlink("./61/cgroup.controllers") = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file1", 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, 0x555555a6d730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555a6d730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file1") = 0 getdents64(3, 0x555555a656f0 /* 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 5198 attached , child_tidptr=0x555555a64650) = 5198 [pid 5198] set_robust_list(0x555555a64660, 24) = 0 [pid 5198] chdir("./62") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] memfd_create("syzkaller", 0) = 3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd262400000 [pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5198] munmap(0x7fd262400000, 138412032) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5198] close(3) = 0 [pid 5198] close(4) = 0 [pid 5198] mkdir("./file1", 0777) = 0 [pid 5198] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,block_validity,debug_want_extra_isize=0x0000000000000066,nom"...) = 0 [pid 5198] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5198] lsetxattr("./file1", "trusted.overlay.upper", "\x00\xfb\x01\x00\x00\x10\xd1\xf5\x41\x88\xa7\x9d\x16\x92\x3c\x02\xb6\x56\x88\xc1\x1a\x02\xe2\xcf\x9b\x6f\xc1\x06\x4b\x52\x0f\xd0\x04\x32\xb8\xe1\xab\x30\xcf\x0b\xdb\xd0\xff\x92\x28\x70\xcd\xa9\xa6\x6e\x2d\xdc\x47\x28\x11\x5c\x17\x54\x53\x84\x20\x1d\xc0\x29\x42\x1b\x56\xb6\x87\x79\xb8\x34\x2f\x14\x5c\x91\xdc\x38\xec\x75\x99\xdd\x2a\x61\xcf\xd9\x72\xaa\xf5\xfd\x77\x24\x17\xa7\x58\xcc\x81\xf7\x49\xc6"..., 2049, 0) = 0 [pid 5198] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5198] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 94.823325][ T5198] loop0: detected capacity change from 0 to 512 [ 94.856897][ T5198] EXT4-fs (loop0): 1 truncate cleaned up [ 94.878994][ T5198] ------------[ cut here ]------------ [ 94.884583][ T5198] Looking for class "&ei->i_data_sem" with key init_once.__key.785, but found a different class "&ei->i_data_sem" with the same key [ 94.898315][ T5198] WARNING: CPU: 1 PID: 5198 at kernel/locking/lockdep.c:935 look_up_lock_class+0xdc/0x160 [ 94.908266][ T5198] Modules linked in: [ 94.912176][ T5198] CPU: 1 PID: 5198 Comm: syz-executor217 Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0 [ 94.922630][ T5198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 94.932726][ T5198] RIP: 0010:look_up_lock_class+0xdc/0x160 [ 94.938664][ T5198] Code: 01 0f 85 80 00 00 00 c6 05 92 aa 09 04 01 90 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 48 c7 c7 00 d6 aa 8b e8 b5 13 f1 f5 90 <0f> 0b 90 90 eb 57 90 e8 f8 97 35 f9 48 c7 c7 40 d5 aa 8b 89 de e8 [ 94.958382][ T5198] RSP: 0018:ffffc900044473f0 EFLAGS: 00010046 [ 94.964453][ T5198] RAX: 41cb4e517590f900 RBX: ffffffff929bdf48 RCX: ffff888023213b80 [ 94.972444][ T5198] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 94.980430][ T5198] RBP: ffffc90004447500 R08: ffffffff81577992 R09: 1ffff110172a51a2 [ 94.988416][ T5198] R10: dffffc0000000000 R11: ffffed10172a51a3 R12: ffff888079eb0c88 [ 94.996400][ T5198] R13: ffff888079eb0c88 R14: ffff888079eb0c88 R15: ffffffff945af9a1 [ 95.004395][ T5198] FS: 0000555555a64380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 95.013374][ T5198] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.020008][ T5198] CR2: 00007fd26243f000 CR3: 000000002e80e000 CR4: 0000000000350ef0 [ 95.028010][ T5198] Call Trace: [ 95.031300][ T5198] [ 95.034269][ T5198] ? __warn+0x162/0x4b0 [ 95.038509][ T5198] ? look_up_lock_class+0xdc/0x160 [ 95.043629][ T5198] ? report_bug+0x2b3/0x500 [ 95.048132][ T5198] ? look_up_lock_class+0xdc/0x160 [ 95.053245][ T5198] ? handle_bug+0x3e/0x70 [ 95.057591][ T5198] ? exc_invalid_op+0x1a/0x50 [ 95.062290][ T5198] ? asm_exc_invalid_op+0x1a/0x20 [ 95.067335][ T5198] ? __warn_printk+0x292/0x360 [ 95.072129][ T5198] ? look_up_lock_class+0xdc/0x160 [ 95.077278][ T5198] register_lock_class+0x102/0x980 [ 95.082412][ T5198] ? mark_lock+0x9a/0x350 [ 95.086764][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.091652][ T5198] ? __pfx_register_lock_class+0x10/0x10 [ 95.097298][ T5198] ? __pfx_register_lock_class+0x10/0x10 [ 95.102949][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.107816][ T5198] __lock_acquire+0xd9/0x1fd0 [ 95.112523][ T5198] lock_acquire+0x1e3/0x530 [ 95.117055][ T5198] ? ext4_move_extents+0x39d/0xec0 [ 95.122199][ T5198] ? __pfx_lock_acquire+0x10/0x10 [ 95.127247][ T5198] ? __pfx___might_resched+0x10/0x10 [ 95.132710][ T5198] ? __down_write_common+0x161/0x200 [ 95.138008][ T5198] ? __pfx_inode_dio_wait+0x10/0x10 [ 95.143251][ T5198] ? __pfx___down_write_common+0x10/0x10 [ 95.148913][ T5198] ? __pfx___down_write_common+0x10/0x10 [ 95.154578][ T5198] down_write_nested+0x3d/0x50 [ 95.159372][ T5198] ? ext4_move_extents+0x39d/0xec0 [ 95.164492][ T5198] ext4_move_extents+0x39d/0xec0 [ 95.169443][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.174335][ T5198] ? rcu_read_lock_any_held+0xb7/0x160 [ 95.179820][ T5198] ? __pfx_ext4_move_extents+0x10/0x10 [ 95.185295][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.190163][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.195033][ T5198] ext4_ioctl+0x349a/0x5540 [ 95.199577][ T5198] ? poison_slab_object+0xa6/0xe0 [ 95.204607][ T5198] ? __kasan_slab_free+0x34/0x70 [ 95.209556][ T5198] ? do_syscall_64+0xfb/0x240 [ 95.214246][ T5198] ? __pfx_ext4_ioctl+0x10/0x10 [ 95.219120][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.223978][ T5198] ? mark_lock+0x9a/0x350 [ 95.228311][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.233169][ T5198] ? do_vfs_ioctl+0x1c72/0x2b60 [ 95.238035][ T5198] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 95.243073][ T5198] ? __pfx_lock_release+0x10/0x10 [ 95.248131][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.252996][ T5198] ? __kasan_slab_free+0x46/0x70 [ 95.257965][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.262827][ T5198] ? kfree+0x14a/0x380 [ 95.266902][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.271760][ T5198] ? tomoyo_path_number_perm+0x71a/0x880 [ 95.277403][ T5198] ? tomoyo_path_number_perm+0x208/0x880 [ 95.283040][ T5198] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 95.289032][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.293910][ T5198] ? __pfx_ptrace_notify+0x10/0x10 [ 95.299046][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.303911][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.308774][ T5198] ? security_file_ioctl+0x87/0xb0 [ 95.313900][ T5198] ? __pfx_ext4_ioctl+0x10/0x10 [ 95.318765][ T5198] __se_sys_ioctl+0xfe/0x170 [ 95.323391][ T5198] do_syscall_64+0xfb/0x240 [ 95.327994][ T5198] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 95.333898][ T5198] RIP: 0033:0x7fd26a86b269 [ 95.338312][ T5198] 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 [ 95.357934][ T5198] RSP: 002b:00007ffe7dd82268 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 95.366385][ T5198] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fd26a86b269 [ 95.374359][ T5198] RDX: 0000000020000000 RSI: 00000000c028660f RDI: 0000000000000005 [ 95.382334][ T5198] RBP: 0000000000000000 R08: 00007ffe7dd822a0 R09: 00007ffe7dd822a0 [ 95.390301][ T5198] R10: 00007ffe7dd822a0 R11: 0000000000000246 R12: 00007ffe7dd8228c [ 95.398271][ T5198] R13: 000000000000003e R14: 431bde82d7b634db R15: 00007ffe7dd822c0 [ 95.406252][ T5198] [ 95.409439][ T5198] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 95.416707][ T5198] CPU: 1 PID: 5198 Comm: syz-executor217 Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0 [ 95.427184][ T5198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 95.437265][ T5198] Call Trace: [ 95.440559][ T5198] [ 95.443510][ T5198] dump_stack_lvl+0x1e7/0x2e0 [ 95.448237][ T5198] ? __pfx_dump_stack_lvl+0x10/0x10 [ 95.453467][ T5198] ? __pfx__printk+0x10/0x10 [ 95.458065][ T5198] ? _printk+0xd5/0x120 [ 95.462235][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.467096][ T5198] ? vscnprintf+0x5d/0x90 [ 95.471458][ T5198] panic+0x349/0x860 [ 95.475368][ T5198] ? __warn+0x171/0x4b0 [ 95.479540][ T5198] ? __pfx_panic+0x10/0x10 [ 95.483970][ T5198] ? show_trace_log_lvl+0x4e4/0x520 [ 95.489221][ T5198] __warn+0x31c/0x4b0 [ 95.493241][ T5198] ? look_up_lock_class+0xdc/0x160 [ 95.498373][ T5198] report_bug+0x2b3/0x500 [ 95.502707][ T5198] ? look_up_lock_class+0xdc/0x160 [ 95.507830][ T5198] handle_bug+0x3e/0x70 [ 95.512009][ T5198] exc_invalid_op+0x1a/0x50 [ 95.516534][ T5198] asm_exc_invalid_op+0x1a/0x20 [ 95.521413][ T5198] RIP: 0010:look_up_lock_class+0xdc/0x160 [ 95.527189][ T5198] Code: 01 0f 85 80 00 00 00 c6 05 92 aa 09 04 01 90 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 48 c7 c7 00 d6 aa 8b e8 b5 13 f1 f5 90 <0f> 0b 90 90 eb 57 90 e8 f8 97 35 f9 48 c7 c7 40 d5 aa 8b 89 de e8 [ 95.546825][ T5198] RSP: 0018:ffffc900044473f0 EFLAGS: 00010046 [ 95.552936][ T5198] RAX: 41cb4e517590f900 RBX: ffffffff929bdf48 RCX: ffff888023213b80 [ 95.560951][ T5198] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 95.568959][ T5198] RBP: ffffc90004447500 R08: ffffffff81577992 R09: 1ffff110172a51a2 [ 95.576943][ T5198] R10: dffffc0000000000 R11: ffffed10172a51a3 R12: ffff888079eb0c88 [ 95.584938][ T5198] R13: ffff888079eb0c88 R14: ffff888079eb0c88 R15: ffffffff945af9a1 [ 95.592977][ T5198] ? __warn_printk+0x292/0x360 [ 95.597818][ T5198] register_lock_class+0x102/0x980 [ 95.602946][ T5198] ? mark_lock+0x9a/0x350 [ 95.607283][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.612163][ T5198] ? __pfx_register_lock_class+0x10/0x10 [ 95.617821][ T5198] ? __pfx_register_lock_class+0x10/0x10 [ 95.623473][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.628350][ T5198] __lock_acquire+0xd9/0x1fd0 [ 95.633071][ T5198] lock_acquire+0x1e3/0x530 [ 95.637595][ T5198] ? ext4_move_extents+0x39d/0xec0 [ 95.642735][ T5198] ? __pfx_lock_acquire+0x10/0x10 [ 95.647785][ T5198] ? __pfx___might_resched+0x10/0x10 [ 95.653088][ T5198] ? __down_write_common+0x161/0x200 [ 95.658409][ T5198] ? __pfx_inode_dio_wait+0x10/0x10 [ 95.663665][ T5198] ? __pfx___down_write_common+0x10/0x10 [ 95.669324][ T5198] ? __pfx___down_write_common+0x10/0x10 [ 95.675014][ T5198] down_write_nested+0x3d/0x50 [ 95.679813][ T5198] ? ext4_move_extents+0x39d/0xec0 [ 95.684966][ T5198] ext4_move_extents+0x39d/0xec0 [ 95.689951][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.694828][ T5198] ? rcu_read_lock_any_held+0xb7/0x160 [ 95.700330][ T5198] ? __pfx_ext4_move_extents+0x10/0x10 [ 95.705813][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.710679][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.715551][ T5198] ext4_ioctl+0x349a/0x5540 [ 95.720065][ T5198] ? poison_slab_object+0xa6/0xe0 [ 95.725104][ T5198] ? __kasan_slab_free+0x34/0x70 [ 95.730151][ T5198] ? do_syscall_64+0xfb/0x240 [ 95.734855][ T5198] ? __pfx_ext4_ioctl+0x10/0x10 [ 95.739741][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.744626][ T5198] ? mark_lock+0x9a/0x350 [ 95.748971][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.753909][ T5198] ? do_vfs_ioctl+0x1c72/0x2b60 [ 95.758841][ T5198] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 95.763943][ T5198] ? __pfx_lock_release+0x10/0x10 [ 95.769010][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.773912][ T5198] ? __kasan_slab_free+0x46/0x70 [ 95.778913][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.783795][ T5198] ? kfree+0x14a/0x380 [ 95.787890][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.792826][ T5198] ? tomoyo_path_number_perm+0x71a/0x880 [ 95.798571][ T5198] ? tomoyo_path_number_perm+0x208/0x880 [ 95.804233][ T5198] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 95.810247][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.815153][ T5198] ? __pfx_ptrace_notify+0x10/0x10 [ 95.820311][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.825177][ T5198] ? srso_return_thunk+0x5/0x5f [ 95.830061][ T5198] ? security_file_ioctl+0x87/0xb0 [ 95.835189][ T5198] ? __pfx_ext4_ioctl+0x10/0x10 [ 95.840062][ T5198] __se_sys_ioctl+0xfe/0x170 [ 95.844667][ T5198] do_syscall_64+0xfb/0x240 [ 95.849291][ T5198] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 95.855246][ T5198] RIP: 0033:0x7fd26a86b269 [ 95.859678][ T5198] 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 [ 95.879307][ T5198] RSP: 002b:00007ffe7dd82268 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 95.887742][ T5198] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fd26a86b269 [ 95.895741][ T5198] RDX: 0000000020000000 RSI: 00000000c028660f RDI: 0000000000000005 [ 95.903716][ T5198] RBP: 0000000000000000 R08: 00007ffe7dd822a0 R09: 00007ffe7dd822a0 [ 95.911690][ T5198] R10: 00007ffe7dd822a0 R11: 0000000000000246 R12: 00007ffe7dd8228c [ 95.919673][ T5198] R13: 000000000000003e R14: 431bde82d7b634db R15: 00007ffe7dd822c0 [ 95.927666][ T5198] [ 95.930926][ T5198] Kernel Offset: disabled [ 95.935250][ T5198] Rebooting in 86400 seconds..