./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2651257038
<...>
Warning: Permanently added '10.128.1.48' (ECDSA) to the list of known hosts.
execve("./syz-executor2651257038", ["./syz-executor2651257038"], 0x7ffd77bcb710 /* 10 vars */) = 0
brk(NULL) = 0x555555c9d000
brk(0x555555c9dc40) = 0x555555c9dc40
arch_prctl(ARCH_SET_FS, 0x555555c9d300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2651257038", 4096) = 28
brk(0x555555cbec40) = 0x555555cbec40
brk(0x555555cbf000) = 0x555555cbf000
mprotect(0x7fad0c61e000, 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
getpid() = 4996
mkdir("./syzkaller.LAom4Y", 0700) = 0
chmod("./syzkaller.LAom4Y", 0777) = 0
chdir("./syzkaller.LAom4Y") = 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, child_tidptr=0x555555c9d5d0) = 4997
./strace-static-x86_64: Process 4997 attached
[pid 4997] chdir("./0") = 0
[pid 4997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 4997] setpgid(0, 0) = 0
[pid 4997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 4997] write(3, "1000", 4) = 4
[pid 4997] close(3) = 0
[pid 4997] symlink("/dev/binderfs", "./binderfs") = 0
[pid 4997] memfd_create("syzkaller", 0) = 3
[pid 4997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
syzkaller login: [ 67.982854][ T4997] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4997 'syz-executor265'
[pid 4997] 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"..., 4194304) = 4194304
[pid 4997] munmap(0x7fad04161000, 4194304) = 0
[pid 4997] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 4997] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 4997] close(3) = 0
[pid 4997] mkdir("./file0", 0777) = 0
[ 68.050946][ T4997] loop0: detected capacity change from 0 to 8192
[ 68.065599][ T4997] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 68.078914][ T4997] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 68.088472][ T4997] REISERFS (device loop0): using ordered data mode
[ 68.095069][ T4997] reiserfs: using flush barriers
[pid 4997] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 4997] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 4997] chdir("./file0") = 0
[pid 4997] ioctl(4, LOOP_CLR_FD) = 0
[pid 4997] close(4) = 0
[pid 4997] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 68.101481][ T4997] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 68.118153][ T4997] REISERFS (device loop0): checking transaction log (loop0)
[ 68.128020][ T4997] REISERFS (device loop0): Using r5 hash to sort names
[ 68.143075][ T4997] reiserfs: enabling write barrier flush mode
[pid 4997] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 4997] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 4997] chdir(".") = 0
[pid 4997] creat("./bus", 000) = 5
[pid 4997] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 4997] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 68.157622][ T4997] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 4997] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 4997] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 4997] exit_group(0) = ?
[pid 4997] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4997, si_uid=0, si_status=0, si_utime=0, si_stime=27 /* 0.27 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./0/binderfs") = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./0/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./0") = 0
mkdir("./1", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5000
./strace-static-x86_64: Process 5000 attached
[pid 5000] chdir("./1") = 0
[pid 5000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5000] setpgid(0, 0) = 0
[pid 5000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5000] write(3, "1000", 4) = 4
[pid 5000] close(3) = 0
[pid 5000] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5000] memfd_create("syzkaller", 0) = 3
[pid 5000] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5000] 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"..., 4194304) = 4194304
[pid 5000] munmap(0x7fad04161000, 4194304) = 0
[pid 5000] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5000] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5000] close(3) = 0
[pid 5000] mkdir("./file0", 0777) = 0
[ 68.501021][ T5000] loop0: detected capacity change from 0 to 8192
[ 68.514104][ T5000] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 68.527482][ T5000] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 68.536780][ T5000] REISERFS (device loop0): using ordered data mode
[ 68.543367][ T5000] reiserfs: using flush barriers
[pid 5000] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5000] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5000] chdir("./file0") = 0
[pid 5000] ioctl(4, LOOP_CLR_FD) = 0
[pid 5000] close(4) = 0
[pid 5000] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 68.549921][ T5000] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 68.566795][ T5000] REISERFS (device loop0): checking transaction log (loop0)
[ 68.575077][ T5000] REISERFS (device loop0): Using r5 hash to sort names
[ 68.591745][ T5000] reiserfs: enabling write barrier flush mode
[pid 5000] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5000] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5000] chdir(".") = 0
[pid 5000] creat("./bus", 000) = 5
[pid 5000] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5000] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 68.603009][ T5000] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5000] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5000] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5000] exit_group(0) = ?
[pid 5000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5000, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./1/binderfs") = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./1/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./1") = 0
mkdir("./2", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5002
./strace-static-x86_64: Process 5002 attached
[pid 5002] chdir("./2") = 0
[pid 5002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5002] setpgid(0, 0) = 0
[pid 5002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5002] write(3, "1000", 4) = 4
[pid 5002] close(3) = 0
[pid 5002] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5002] memfd_create("syzkaller", 0) = 3
[pid 5002] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5002] 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"..., 4194304) = 4194304
[pid 5002] munmap(0x7fad04161000, 4194304) = 0
[pid 5002] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5002] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5002] close(3) = 0
[pid 5002] mkdir("./file0", 0777) = 0
[ 68.902508][ T5002] loop0: detected capacity change from 0 to 8192
[ 68.913349][ T5002] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 68.926412][ T5002] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 68.936312][ T5002] REISERFS (device loop0): using ordered data mode
[ 68.942988][ T5002] reiserfs: using flush barriers
[pid 5002] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5002] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5002] chdir("./file0") = 0
[pid 5002] ioctl(4, LOOP_CLR_FD) = 0
[pid 5002] close(4) = 0
[pid 5002] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 68.949073][ T5002] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 68.966046][ T5002] REISERFS (device loop0): checking transaction log (loop0)
[ 68.974526][ T5002] REISERFS (device loop0): Using r5 hash to sort names
[ 68.985816][ T5002] reiserfs: enabling write barrier flush mode
[pid 5002] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5002] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5002] chdir(".") = 0
[pid 5002] creat("./bus", 000) = 5
[pid 5002] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5002] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 68.995660][ T5002] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5002] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5002] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5002] exit_group(0) = ?
[pid 5002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5002, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} ---
umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./2/binderfs") = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./2/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./2") = 0
mkdir("./3", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5004
./strace-static-x86_64: Process 5004 attached
[pid 5004] chdir("./3") = 0
[pid 5004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5004] setpgid(0, 0) = 0
[pid 5004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5004] write(3, "1000", 4) = 4
[pid 5004] close(3) = 0
[pid 5004] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5004] memfd_create("syzkaller", 0) = 3
[pid 5004] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5004] 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"..., 4194304) = 4194304
[pid 5004] munmap(0x7fad04161000, 4194304) = 0
[pid 5004] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5004] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5004] close(3) = 0
[pid 5004] mkdir("./file0", 0777) = 0
[ 69.297083][ T5004] loop0: detected capacity change from 0 to 8192
[ 69.308384][ T5004] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 69.321502][ T5004] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 69.330806][ T5004] REISERFS (device loop0): using ordered data mode
[ 69.337418][ T5004] reiserfs: using flush barriers
[pid 5004] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5004] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5004] chdir("./file0") = 0
[pid 5004] ioctl(4, LOOP_CLR_FD) = 0
[pid 5004] close(4) = 0
[pid 5004] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 69.343622][ T5004] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 69.360238][ T5004] REISERFS (device loop0): checking transaction log (loop0)
[ 69.368630][ T5004] REISERFS (device loop0): Using r5 hash to sort names
[pid 5004] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5004] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5004] chdir(".") = 0
[pid 5004] creat("./bus", 000) = 5
[pid 5004] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5004] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 69.393601][ T5004] reiserfs: enabling write barrier flush mode
[ 69.405721][ T5004] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5004] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5004] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5004] exit_group(0) = ?
[pid 5004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5004, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./3/binderfs") = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./3/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./3") = 0
mkdir("./4", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5006
./strace-static-x86_64: Process 5006 attached
[pid 5006] chdir("./4") = 0
[pid 5006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5006] setpgid(0, 0) = 0
[pid 5006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5006] write(3, "1000", 4) = 4
[pid 5006] close(3) = 0
[pid 5006] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5006] memfd_create("syzkaller", 0) = 3
[pid 5006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5006] 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"..., 4194304) = 4194304
[pid 5006] munmap(0x7fad04161000, 4194304) = 0
[pid 5006] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5006] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5006] close(3) = 0
[pid 5006] mkdir("./file0", 0777) = 0
[ 69.695100][ T5006] loop0: detected capacity change from 0 to 8192
[ 69.705903][ T5006] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 69.718966][ T5006] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 69.728216][ T5006] REISERFS (device loop0): using ordered data mode
[ 69.734844][ T5006] reiserfs: using flush barriers
[pid 5006] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5006] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5006] chdir("./file0") = 0
[pid 5006] ioctl(4, LOOP_CLR_FD) = 0
[pid 5006] close(4) = 0
[pid 5006] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 69.741022][ T5006] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 69.757610][ T5006] REISERFS (device loop0): checking transaction log (loop0)
[ 69.766020][ T5006] REISERFS (device loop0): Using r5 hash to sort names
[ 69.779872][ T5006] reiserfs: enabling write barrier flush mode
[pid 5006] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5006] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5006] chdir(".") = 0
[pid 5006] creat("./bus", 000) = 5
[pid 5006] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5006] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 69.790108][ T5006] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5006] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5006] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5006] exit_group(0) = ?
[pid 5006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5006, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./4/binderfs") = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./4/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./4") = 0
mkdir("./5", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5008
./strace-static-x86_64: Process 5008 attached
[pid 5008] chdir("./5") = 0
[pid 5008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5008] setpgid(0, 0) = 0
[pid 5008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5008] write(3, "1000", 4) = 4
[pid 5008] close(3) = 0
[pid 5008] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5008] memfd_create("syzkaller", 0) = 3
[pid 5008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5008] 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"..., 4194304) = 4194304
[pid 5008] munmap(0x7fad04161000, 4194304) = 0
[pid 5008] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5008] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5008] close(3) = 0
[pid 5008] mkdir("./file0", 0777) = 0
[ 70.093712][ T5008] loop0: detected capacity change from 0 to 8192
[ 70.105543][ T5008] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 70.119010][ T5008] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 70.128772][ T5008] REISERFS (device loop0): using ordered data mode
[ 70.135701][ T5008] reiserfs: using flush barriers
[pid 5008] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5008] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5008] chdir("./file0") = 0
[pid 5008] ioctl(4, LOOP_CLR_FD) = 0
[pid 5008] close(4) = 0
[pid 5008] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 70.141948][ T5008] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 70.158559][ T5008] REISERFS (device loop0): checking transaction log (loop0)
[ 70.167055][ T5008] REISERFS (device loop0): Using r5 hash to sort names
[ 70.177639][ T5008] reiserfs: enabling write barrier flush mode
[pid 5008] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5008] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5008] chdir(".") = 0
[pid 5008] creat("./bus", 000) = 5
[pid 5008] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5008] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 70.187555][ T5008] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5008] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5008] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5008] exit_group(0) = ?
[pid 5008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5008, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./5/binderfs") = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./5/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./5") = 0
mkdir("./6", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5010
./strace-static-x86_64: Process 5010 attached
[pid 5010] chdir("./6") = 0
[pid 5010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5010] setpgid(0, 0) = 0
[pid 5010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5010] write(3, "1000", 4) = 4
[pid 5010] close(3) = 0
[pid 5010] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5010] memfd_create("syzkaller", 0) = 3
[pid 5010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5010] 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"..., 4194304) = 4194304
[pid 5010] munmap(0x7fad04161000, 4194304) = 0
[pid 5010] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5010] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5010] close(3) = 0
[pid 5010] mkdir("./file0", 0777) = 0
[ 70.473073][ T5010] loop0: detected capacity change from 0 to 8192
[ 70.483811][ T5010] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 70.497188][ T5010] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 70.506939][ T5010] REISERFS (device loop0): using ordered data mode
[ 70.513890][ T5010] reiserfs: using flush barriers
[pid 5010] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5010] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5010] chdir("./file0") = 0
[pid 5010] ioctl(4, LOOP_CLR_FD) = 0
[pid 5010] close(4) = 0
[pid 5010] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 70.520018][ T5010] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 70.536731][ T5010] REISERFS (device loop0): checking transaction log (loop0)
[ 70.545531][ T5010] REISERFS (device loop0): Using r5 hash to sort names
[ 70.556592][ T5010] reiserfs: enabling write barrier flush mode
[pid 5010] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5010] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5010] chdir(".") = 0
[pid 5010] creat("./bus", 000) = 5
[pid 5010] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5010] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 70.567237][ T5010] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5010] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[ 70.724059][ T5010]
[ 70.726423][ T5010] ======================================================
[ 70.733463][ T5010] WARNING: possible circular locking dependency detected
[ 70.740501][ T5010] 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 Not tainted
[ 70.747531][ T5010] ------------------------------------------------------
[ 70.754545][ T5010] syz-executor265/5010 is trying to acquire lock:
[ 70.760957][ T5010] ffff8880217e2090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0
[ 70.769999][ T5010]
[ 70.769999][ T5010] but task is already holding lock:
[ 70.777371][ T5010] ffff888019abc068 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17c/0x410
[ 70.786339][ T5010]
[ 70.786339][ T5010] which lock already depends on the new lock.
[ 70.786339][ T5010]
[ 70.796740][ T5010]
[ 70.796740][ T5010] the existing dependency chain (in reverse order) is:
[ 70.805847][ T5010]
[ 70.805847][ T5010] -> #1 (&mm->mmap_lock){++++}-{3:3}:
[ 70.813428][ T5010] lock_acquire+0x1e3/0x520
[ 70.818483][ T5010] __might_fault+0xba/0x120
[ 70.823534][ T5010] reiserfs_ioctl+0x121/0x340
[ 70.828755][ T5010] __se_sys_ioctl+0xf1/0x160
[ 70.833877][ T5010] do_syscall_64+0x41/0xc0
[ 70.838843][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 70.845263][ T5010]
[ 70.845263][ T5010] -> #0 (&sbi->lock){+.+.}-{3:3}:
[ 70.852490][ T5010] validate_chain+0x166b/0x58e0
[ 70.857871][ T5010] __lock_acquire+0x1295/0x2000
[ 70.863253][ T5010] lock_acquire+0x1e3/0x520
[ 70.868288][ T5010] __mutex_lock_common+0x1d8/0x2530
[ 70.874016][ T5010] mutex_lock_nested+0x1b/0x20
[ 70.879306][ T5010] reiserfs_write_lock+0x7a/0xd0
[ 70.884772][ T5010] reiserfs_dirty_inode+0xf2/0x240
[ 70.890414][ T5010] __mark_inode_dirty+0x305/0xd90
[ 70.895980][ T5010] touch_atime+0x3fe/0x680
[ 70.900925][ T5010] generic_file_mmap+0xc0/0x120
[ 70.906316][ T5010] mmap_region+0xe65/0x2250
[ 70.911340][ T5010] do_mmap+0x8c9/0xf70
[ 70.915929][ T5010] vm_mmap_pgoff+0x1db/0x410
[ 70.921050][ T5010] ksys_mmap_pgoff+0x4f9/0x6d0
[ 70.926338][ T5010] do_syscall_64+0x41/0xc0
[ 70.931283][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 70.937707][ T5010]
[ 70.937707][ T5010] other info that might help us debug this:
[ 70.937707][ T5010]
[ 70.947934][ T5010] Possible unsafe locking scenario:
[ 70.947934][ T5010]
[ 70.955383][ T5010] CPU0 CPU1
[ 70.960749][ T5010] ---- ----
[ 70.966110][ T5010] lock(&mm->mmap_lock);
[ 70.970459][ T5010] lock(&sbi->lock);
[ 70.977010][ T5010] lock(&mm->mmap_lock);
[ 70.983861][ T5010] lock(&sbi->lock);
[ 70.987846][ T5010]
[ 70.987846][ T5010] *** DEADLOCK ***
[ 70.987846][ T5010]
[ 70.995987][ T5010] 2 locks held by syz-executor265/5010:
[ 71.001531][ T5010] #0: ffff888019abc068 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17c/0x410
[ 71.010948][ T5010] #1: ffff8880258aa460 (sb_writers#9){.+.+}-{0:0}, at: generic_file_mmap+0xc0/0x120
[ 71.020456][ T5010]
[ 71.020456][ T5010] stack backtrace:
[ 71.026345][ T5010] CPU: 0 PID: 5010 Comm: syz-executor265 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0
[ 71.036767][ T5010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
[ 71.046839][ T5010] Call Trace:
[ 71.050122][ T5010]
[ 71.053056][ T5010] dump_stack_lvl+0x1e7/0x2d0
[ 71.057798][ T5010] ? nf_tcp_handle_invalid+0x650/0x650
[ 71.063275][ T5010] ? print_circular_bug+0x12b/0x1a0
[ 71.068486][ T5010] check_noncircular+0x2fe/0x3b0
[ 71.073438][ T5010] ? add_chain_block+0x850/0x850
[ 71.078395][ T5010] validate_chain+0x166b/0x58e0
[ 71.083256][ T5010] ? check_path+0x21/0x40
[ 71.087622][ T5010] ? reacquire_held_locks+0x660/0x660
[ 71.093007][ T5010] ? validate_chain+0x13d5/0x58e0
[ 71.098039][ T5010] ? stack_trace_snprint+0xf0/0xf0
[ 71.103173][ T5010] ? mark_lock+0x9a/0x340
[ 71.107528][ T5010] __lock_acquire+0x1295/0x2000
[ 71.112410][ T5010] lock_acquire+0x1e3/0x520
[ 71.116929][ T5010] ? reiserfs_write_lock+0x7a/0xd0
[ 71.122057][ T5010] ? read_lock_is_recursive+0x20/0x20
[ 71.127436][ T5010] ? __lock_acquire+0x1295/0x2000
[ 71.132559][ T5010] ? __might_sleep+0xc0/0xc0
[ 71.137166][ T5010] __mutex_lock_common+0x1d8/0x2530
[ 71.142377][ T5010] ? reiserfs_write_lock+0x7a/0xd0
[ 71.147495][ T5010] ? mark_lock+0x9a/0x340
[ 71.151933][ T5010] ? reiserfs_write_lock+0x7a/0xd0
[ 71.157055][ T5010] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0
[ 71.163043][ T5010] ? mutex_lock_io_nested+0x60/0x60
[ 71.168265][ T5010] ? ktime_get_coarse_real_ts64+0x3a/0x120
[ 71.174083][ T5010] ? lockdep_hardirqs_on+0x98/0x140
[ 71.179292][ T5010] mutex_lock_nested+0x1b/0x20
[ 71.184070][ T5010] reiserfs_write_lock+0x7a/0xd0
[ 71.189018][ T5010] reiserfs_dirty_inode+0xf2/0x240
[ 71.194166][ T5010] ? __mnt_want_write+0x87/0x2b0
[ 71.199109][ T5010] ? reiserfs_free_inode+0x30/0x30
[ 71.204233][ T5010] ? current_time+0x1e0/0x300
[ 71.208918][ T5010] ? reiserfs_free_inode+0x30/0x30
[ 71.214042][ T5010] __mark_inode_dirty+0x305/0xd90
[ 71.219168][ T5010] ? generic_file_mmap+0xc0/0x120
[ 71.224197][ T5010] touch_atime+0x3fe/0x680
[ 71.228623][ T5010] ? current_time+0x300/0x300
[ 71.233312][ T5010] ? __raw_spin_lock_init+0x45/0x100
[ 71.238611][ T5010] generic_file_mmap+0xc0/0x120
[ 71.243515][ T5010] mmap_region+0xe65/0x2250
[ 71.248036][ T5010] ? file_mmap_ok+0x150/0x150
[ 71.252807][ T5010] ? cap_mmap_addr+0x162/0x2c0
[ 71.257583][ T5010] do_mmap+0x8c9/0xf70
[ 71.261673][ T5010] ? mlock_future_check+0x110/0x110
[ 71.266905][ T5010] ? ima_file_free+0x3c0/0x3c0
[ 71.271696][ T5010] vm_mmap_pgoff+0x1db/0x410
[ 71.276670][ T5010] ? account_locked_vm+0x220/0x220
[ 71.281806][ T5010] ? __fget_files+0x3cf/0x440
[ 71.286496][ T5010] ksys_mmap_pgoff+0x4f9/0x6d0
[ 71.291269][ T5010] do_syscall_64+0x41/0xc0
[ 71.295728][ T5010] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 71.301727][ T5010] RIP: 0033:0x7fad0c5aebe9
[ 71.306154][ T5010] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 c0 ff ff ff f7 d8 64 89 01 48
[ 71.325772][ T5010] RSP: 002b:00007ffcf222ad78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[ 71.334295][ T5010] RAX: ffffffffffffffda RBX: 0000000000011164 RCX: 00007fad0c5aebe9
[ 71.342286][ T5010] RDX: 0000000000000001 RSI: 0000000000001000 RDI: 0000000020000000
[ 71.350345][ T5010] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[ 71.358319][ T5010] R10: 0000000000010012 R11: 0000000000000246 R12: 00007ffcf222adac
[ 71.366305][ T5010] R13: 00007ffcf222ade0 R14: 00007ffcf222adc0 R15: 0000000000000006
[ 71.374303][ T5010]
[pid 5010] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5010] exit_group(0) = ?
[pid 5010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5010, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./6/binderfs") = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./6/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./6") = 0
mkdir("./7", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5012
./strace-static-x86_64: Process 5012 attached
[pid 5012] chdir("./7") = 0
[pid 5012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5012] setpgid(0, 0) = 0
[pid 5012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5012] write(3, "1000", 4) = 4
[pid 5012] close(3) = 0
[pid 5012] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5012] memfd_create("syzkaller", 0) = 3
[pid 5012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5012] 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"..., 4194304) = 4194304
[pid 5012] munmap(0x7fad04161000, 4194304) = 0
[pid 5012] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5012] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5012] close(3) = 0
[pid 5012] mkdir("./file0", 0777) = 0
[ 71.496918][ T5012] loop0: detected capacity change from 0 to 8192
[ 71.517557][ T5012] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 71.530629][ T5012] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 71.540592][ T5012] REISERFS (device loop0): using ordered data mode
[pid 5012] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5012] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5012] chdir("./file0") = 0
[pid 5012] ioctl(4, LOOP_CLR_FD) = 0
[pid 5012] close(4) = 0
[pid 5012] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 71.547111][ T5012] reiserfs: using flush barriers
[ 71.558271][ T5012] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 71.574716][ T5012] REISERFS (device loop0): checking transaction log (loop0)
[ 71.582814][ T5012] REISERFS (device loop0): Using r5 hash to sort names
[pid 5012] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5012] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5012] chdir(".") = 0
[pid 5012] creat("./bus", 000) = 5
[pid 5012] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5012] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 71.599626][ T5012] reiserfs: enabling write barrier flush mode
[ 71.608519][ T5012] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5012] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5012] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5012] exit_group(0) = ?
[pid 5012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5012, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./7/binderfs") = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./7/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./7") = 0
mkdir("./8", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5014
./strace-static-x86_64: Process 5014 attached
[pid 5014] chdir("./8") = 0
[pid 5014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5014] setpgid(0, 0) = 0
[pid 5014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5014] write(3, "1000", 4) = 4
[pid 5014] close(3) = 0
[pid 5014] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5014] memfd_create("syzkaller", 0) = 3
[pid 5014] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5014] 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"..., 4194304) = 4194304
[pid 5014] munmap(0x7fad04161000, 4194304) = 0
[pid 5014] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5014] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5014] close(3) = 0
[pid 5014] mkdir("./file0", 0777) = 0
[ 71.854651][ T5014] loop0: detected capacity change from 0 to 8192
[ 71.863776][ T5014] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 71.876920][ T5014] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 71.886219][ T5014] REISERFS (device loop0): using ordered data mode
[ 71.892797][ T5014] reiserfs: using flush barriers
[pid 5014] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5014] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5014] chdir("./file0") = 0
[pid 5014] ioctl(4, LOOP_CLR_FD) = 0
[pid 5014] close(4) = 0
[pid 5014] mkdir(".", 0777) = -1 EEXIST (File exists)
[pid 5014] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5014] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5014] chdir(".") = 0
[pid 5014] creat("./bus", 000) = 5
[pid 5014] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5014] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 71.898580][ T5014] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 71.915094][ T5014] REISERFS (device loop0): checking transaction log (loop0)
[ 71.923170][ T5014] REISERFS (device loop0): Using r5 hash to sort names
[ 71.935913][ T5014] reiserfs: enabling write barrier flush mode
[ 71.945335][ T5014] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5014] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5014] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5014] exit_group(0) = ?
[pid 5014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5014, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./8/binderfs") = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./8/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./8") = 0
mkdir("./9", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5016
./strace-static-x86_64: Process 5016 attached
[pid 5016] chdir("./9") = 0
[pid 5016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5016] setpgid(0, 0) = 0
[pid 5016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5016] write(3, "1000", 4) = 4
[pid 5016] close(3) = 0
[pid 5016] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5016] memfd_create("syzkaller", 0) = 3
[pid 5016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5016] 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"..., 4194304) = 4194304
[pid 5016] munmap(0x7fad04161000, 4194304) = 0
[pid 5016] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5016] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5016] close(3) = 0
[pid 5016] mkdir("./file0", 0777) = 0
[ 72.151731][ T5016] loop0: detected capacity change from 0 to 8192
[ 72.161274][ T5016] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 72.174309][ T5016] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 72.183614][ T5016] REISERFS (device loop0): using ordered data mode
[ 72.190156][ T5016] reiserfs: using flush barriers
[pid 5016] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5016] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5016] chdir("./file0") = 0
[pid 5016] ioctl(4, LOOP_CLR_FD) = 0
[pid 5016] close(4) = 0
[pid 5016] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 72.196098][ T5016] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 72.212489][ T5016] REISERFS (device loop0): checking transaction log (loop0)
[ 72.220653][ T5016] REISERFS (device loop0): Using r5 hash to sort names
[pid 5016] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5016] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5016] chdir(".") = 0
[pid 5016] creat("./bus", 000) = 5
[pid 5016] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5016] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 72.249610][ T5016] reiserfs: enabling write barrier flush mode
[ 72.257336][ T5016] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5016] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5016] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5016] exit_group(0) = ?
[pid 5016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5016, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./9/binderfs") = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./9/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./9") = 0
mkdir("./10", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5018
./strace-static-x86_64: Process 5018 attached
[pid 5018] chdir("./10") = 0
[pid 5018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5018] setpgid(0, 0) = 0
[pid 5018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5018] write(3, "1000", 4) = 4
[pid 5018] close(3) = 0
[pid 5018] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5018] memfd_create("syzkaller", 0) = 3
[pid 5018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5018] 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"..., 4194304) = 4194304
[pid 5018] munmap(0x7fad04161000, 4194304) = 0
[pid 5018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5018] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5018] close(3) = 0
[pid 5018] mkdir("./file0", 0777) = 0
[ 72.482295][ T5018] loop0: detected capacity change from 0 to 8192
[ 72.491696][ T5018] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 72.504806][ T5018] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 72.514057][ T5018] REISERFS (device loop0): using ordered data mode
[ 72.520753][ T5018] reiserfs: using flush barriers
[pid 5018] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5018] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5018] chdir("./file0") = 0
[pid 5018] ioctl(4, LOOP_CLR_FD) = 0
[pid 5018] close(4) = 0
[pid 5018] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 72.526410][ T5018] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 72.543089][ T5018] REISERFS (device loop0): checking transaction log (loop0)
[ 72.551286][ T5018] REISERFS (device loop0): Using r5 hash to sort names
[ 72.566243][ T5018] reiserfs: enabling write barrier flush mode
[pid 5018] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5018] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5018] chdir(".") = 0
[pid 5018] creat("./bus", 000) = 5
[pid 5018] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5018] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 72.576851][ T5018] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5018] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5018] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5018] exit_group(0) = ?
[pid 5018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5018, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./10/binderfs") = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./10/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./10") = 0
mkdir("./11", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5020
./strace-static-x86_64: Process 5020 attached
[pid 5020] chdir("./11") = 0
[pid 5020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5020] setpgid(0, 0) = 0
[pid 5020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5020] write(3, "1000", 4) = 4
[pid 5020] close(3) = 0
[pid 5020] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5020] memfd_create("syzkaller", 0) = 3
[pid 5020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5020] 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"..., 4194304) = 4194304
[pid 5020] munmap(0x7fad04161000, 4194304) = 0
[pid 5020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5020] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5020] close(3) = 0
[pid 5020] mkdir("./file0", 0777) = 0
[ 72.794327][ T5020] loop0: detected capacity change from 0 to 8192
[ 72.804017][ T5020] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 72.817032][ T5020] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 72.826441][ T5020] REISERFS (device loop0): using ordered data mode
[ 72.833056][ T5020] reiserfs: using flush barriers
[pid 5020] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5020] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5020] chdir("./file0") = 0
[pid 5020] ioctl(4, LOOP_CLR_FD) = 0
[pid 5020] close(4) = 0
[pid 5020] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 72.838787][ T5020] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 72.855373][ T5020] REISERFS (device loop0): checking transaction log (loop0)
[ 72.863231][ T5020] REISERFS (device loop0): Using r5 hash to sort names
[ 72.888675][ T5020] reiserfs: enabling write barrier flush mode
[pid 5020] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5020] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5020] chdir(".") = 0
[pid 5020] creat("./bus", 000) = 5
[pid 5020] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5020] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 72.896545][ T5020] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5020] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5020] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5020] exit_group(0) = ?
[pid 5020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5020, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./11/binderfs") = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./11/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./11") = 0
mkdir("./12", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5022 attached
[pid 5022] chdir("./12") = 0
[pid 5022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5022] setpgid(0, 0) = 0
[pid 5022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5022] write(3, "1000", 4) = 4
[pid 5022] close(3) = 0
[pid 5022] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5022] memfd_create("syzkaller", 0) = 3
[pid 5022] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 4996] <... clone resumed>, child_tidptr=0x555555c9d5d0) = 5022
[pid 5022] 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"..., 4194304) = 4194304
[pid 5022] munmap(0x7fad04161000, 4194304) = 0
[pid 5022] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5022] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5022] close(3) = 0
[pid 5022] mkdir("./file0", 0777) = 0
[ 73.127185][ T5022] loop0: detected capacity change from 0 to 8192
[ 73.137083][ T5022] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 73.150337][ T5022] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 73.159732][ T5022] REISERFS (device loop0): using ordered data mode
[ 73.166391][ T5022] reiserfs: using flush barriers
[pid 5022] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5022] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5022] chdir("./file0") = 0
[pid 5022] ioctl(4, LOOP_CLR_FD) = 0
[pid 5022] close(4) = 0
[pid 5022] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 73.172190][ T5022] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 73.188531][ T5022] REISERFS (device loop0): checking transaction log (loop0)
[ 73.196530][ T5022] REISERFS (device loop0): Using r5 hash to sort names
[ 73.209007][ T5022] reiserfs: enabling write barrier flush mode
[pid 5022] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5022] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5022] chdir(".") = 0
[pid 5022] creat("./bus", 000) = 5
[pid 5022] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5022] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 73.221423][ T5022] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5022] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5022] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5022] exit_group(0) = ?
[pid 5022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5022, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./12/binderfs") = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./12/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./12/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./12") = 0
mkdir("./13", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5024
./strace-static-x86_64: Process 5024 attached
[pid 5024] chdir("./13") = 0
[pid 5024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5024] setpgid(0, 0) = 0
[pid 5024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5024] write(3, "1000", 4) = 4
[pid 5024] close(3) = 0
[pid 5024] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5024] memfd_create("syzkaller", 0) = 3
[pid 5024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5024] 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"..., 4194304) = 4194304
[pid 5024] munmap(0x7fad04161000, 4194304) = 0
[pid 5024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5024] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5024] close(3) = 0
[pid 5024] mkdir("./file0", 0777) = 0
[ 73.441472][ T5024] loop0: detected capacity change from 0 to 8192
[ 73.451230][ T5024] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 73.464424][ T5024] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 73.474000][ T5024] REISERFS (device loop0): using ordered data mode
[ 73.480551][ T5024] reiserfs: using flush barriers
[pid 5024] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5024] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5024] chdir("./file0") = 0
[pid 5024] ioctl(4, LOOP_CLR_FD) = 0
[pid 5024] close(4) = 0
[pid 5024] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 73.486362][ T5024] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 73.502876][ T5024] REISERFS (device loop0): checking transaction log (loop0)
[ 73.511045][ T5024] REISERFS (device loop0): Using r5 hash to sort names
[ 73.529864][ T5024] reiserfs: enabling write barrier flush mode
[pid 5024] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5024] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5024] chdir(".") = 0
[pid 5024] creat("./bus", 000) = 5
[pid 5024] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5024] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 73.538027][ T5024] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5024] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5024] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5024] exit_group(0) = ?
[pid 5024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5024, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} ---
umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./13/binderfs") = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./13/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./13/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./13") = 0
mkdir("./14", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5026 attached
[pid 5026] chdir("./14") = 0
[pid 5026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5026] setpgid(0, 0) = 0
[pid 5026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5026] write(3, "1000", 4) = 4
[pid 5026] close(3) = 0
[pid 5026] symlink("/dev/binderfs", "./binderfs") = 0
[pid 4996] <... clone resumed>, child_tidptr=0x555555c9d5d0) = 5026
[pid 5026] memfd_create("syzkaller", 0) = 3
[pid 5026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5026] 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"..., 4194304) = 4194304
[pid 5026] munmap(0x7fad04161000, 4194304) = 0
[pid 5026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5026] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5026] close(3) = 0
[pid 5026] mkdir("./file0", 0777) = 0
[ 73.761943][ T5026] loop0: detected capacity change from 0 to 8192
[ 73.772586][ T5026] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 73.785694][ T5026] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 73.794919][ T5026] REISERFS (device loop0): using ordered data mode
[ 73.801572][ T5026] reiserfs: using flush barriers
[pid 5026] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5026] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5026] chdir("./file0") = 0
[pid 5026] ioctl(4, LOOP_CLR_FD) = 0
[pid 5026] close(4) = 0
[pid 5026] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 73.807257][ T5026] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 73.823718][ T5026] REISERFS (device loop0): checking transaction log (loop0)
[ 73.831724][ T5026] REISERFS (device loop0): Using r5 hash to sort names
[ 73.851076][ T5026] reiserfs: enabling write barrier flush mode
[pid 5026] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5026] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5026] chdir(".") = 0
[pid 5026] creat("./bus", 000) = 5
[pid 5026] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5026] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 73.858786][ T5026] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5026] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5026] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5026] exit_group(0) = ?
[pid 5026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5026, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./14/binderfs") = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./14/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./14/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./14") = 0
mkdir("./15", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5028
./strace-static-x86_64: Process 5028 attached
[pid 5028] chdir("./15") = 0
[pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5028] setpgid(0, 0) = 0
[pid 5028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5028] write(3, "1000", 4) = 4
[pid 5028] close(3) = 0
[pid 5028] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5028] memfd_create("syzkaller", 0) = 3
[pid 5028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5028] 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"..., 4194304) = 4194304
[pid 5028] munmap(0x7fad04161000, 4194304) = 0
[pid 5028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5028] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5028] close(3) = 0
[pid 5028] mkdir("./file0", 0777) = 0
[ 74.056764][ T5028] loop0: detected capacity change from 0 to 8192
[ 74.065900][ T5028] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 74.078953][ T5028] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 74.088215][ T5028] REISERFS (device loop0): using ordered data mode
[ 74.094909][ T5028] reiserfs: using flush barriers
[pid 5028] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5028] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5028] chdir("./file0") = 0
[pid 5028] ioctl(4, LOOP_CLR_FD) = 0
[pid 5028] close(4) = 0
[pid 5028] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 74.101593][ T5028] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 74.117944][ T5028] REISERFS (device loop0): checking transaction log (loop0)
[ 74.125883][ T5028] REISERFS (device loop0): Using r5 hash to sort names
[ 74.144629][ T5028] reiserfs: enabling write barrier flush mode
[pid 5028] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5028] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5028] chdir(".") = 0
[pid 5028] creat("./bus", 000) = 5
[pid 5028] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5028] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 74.152710][ T5028] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5028] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5028] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5028] exit_group(0) = ?
[pid 5028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5028, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./15/binderfs") = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./15/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./15") = 0
mkdir("./16", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5030 attached
, child_tidptr=0x555555c9d5d0) = 5030
[pid 5030] chdir("./16") = 0
[pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5030] setpgid(0, 0) = 0
[pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5030] write(3, "1000", 4) = 4
[pid 5030] close(3) = 0
[pid 5030] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5030] memfd_create("syzkaller", 0) = 3
[pid 5030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5030] 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"..., 4194304) = 4194304
[pid 5030] munmap(0x7fad04161000, 4194304) = 0
[pid 5030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5030] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5030] close(3) = 0
[pid 5030] mkdir("./file0", 0777) = 0
[ 74.396397][ T5030] loop0: detected capacity change from 0 to 8192
[ 74.406652][ T5030] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 74.419736][ T5030] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 74.429104][ T5030] REISERFS (device loop0): using ordered data mode
[ 74.435722][ T5030] reiserfs: using flush barriers
[pid 5030] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5030] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5030] chdir("./file0") = 0
[pid 5030] ioctl(4, LOOP_CLR_FD) = 0
[pid 5030] close(4) = 0
[pid 5030] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 74.441536][ T5030] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 74.458326][ T5030] REISERFS (device loop0): checking transaction log (loop0)
[ 74.466406][ T5030] REISERFS (device loop0): Using r5 hash to sort names
[ 74.482793][ T5030] reiserfs: enabling write barrier flush mode
[pid 5030] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5030] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5030] chdir(".") = 0
[pid 5030] creat("./bus", 000) = 5
[pid 5030] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5030] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 74.491024][ T5030] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5030] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5030] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5030] exit_group(0) = ?
[pid 5030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} ---
umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./16/binderfs") = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./16/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./16") = 0
mkdir("./17", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5032
./strace-static-x86_64: Process 5032 attached
[pid 5032] chdir("./17") = 0
[pid 5032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5032] setpgid(0, 0) = 0
[pid 5032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5032] write(3, "1000", 4) = 4
[pid 5032] close(3) = 0
[pid 5032] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5032] memfd_create("syzkaller", 0) = 3
[pid 5032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5032] 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"..., 4194304) = 4194304
[pid 5032] munmap(0x7fad04161000, 4194304) = 0
[pid 5032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5032] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5032] close(3) = 0
[pid 5032] mkdir("./file0", 0777) = 0
[ 74.697079][ T5032] loop0: detected capacity change from 0 to 8192
[ 74.707119][ T5032] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 74.720180][ T5032] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 74.729504][ T5032] REISERFS (device loop0): using ordered data mode
[ 74.736089][ T5032] reiserfs: using flush barriers
[pid 5032] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5032] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5032] chdir("./file0") = 0
[pid 5032] ioctl(4, LOOP_CLR_FD) = 0
[pid 5032] close(4) = 0
[pid 5032] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 74.741903][ T5032] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 74.758332][ T5032] REISERFS (device loop0): checking transaction log (loop0)
[ 74.766387][ T5032] REISERFS (device loop0): Using r5 hash to sort names
[ 74.782589][ T5032] reiserfs: enabling write barrier flush mode
[pid 5032] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5032] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5032] chdir(".") = 0
[pid 5032] creat("./bus", 000) = 5
[pid 5032] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5032] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 74.791862][ T5032] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5032] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5032] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5032] exit_group(0) = ?
[pid 5032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5032, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./17/binderfs") = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./17/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./17/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./17") = 0
mkdir("./18", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5034
./strace-static-x86_64: Process 5034 attached
[pid 5034] chdir("./18") = 0
[pid 5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5034] setpgid(0, 0) = 0
[pid 5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5034] write(3, "1000", 4) = 4
[pid 5034] close(3) = 0
[pid 5034] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5034] memfd_create("syzkaller", 0) = 3
[pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5034] 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"..., 4194304) = 4194304
[pid 5034] munmap(0x7fad04161000, 4194304) = 0
[pid 5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5034] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5034] close(3) = 0
[pid 5034] mkdir("./file0", 0777) = 0
[ 75.006758][ T5034] loop0: detected capacity change from 0 to 8192
[ 75.017302][ T5034] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 75.030703][ T5034] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 75.040131][ T5034] REISERFS (device loop0): using ordered data mode
[ 75.046747][ T5034] reiserfs: using flush barriers
[pid 5034] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5034] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5034] chdir("./file0") = 0
[pid 5034] ioctl(4, LOOP_CLR_FD) = 0
[pid 5034] close(4) = 0
[pid 5034] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 75.052523][ T5034] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 75.069148][ T5034] REISERFS (device loop0): checking transaction log (loop0)
[ 75.077115][ T5034] REISERFS (device loop0): Using r5 hash to sort names
[ 75.091743][ T5034] reiserfs: enabling write barrier flush mode
[pid 5034] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5034] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5034] chdir(".") = 0
[pid 5034] creat("./bus", 000) = 5
[pid 5034] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5034] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 75.099474][ T5034] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5034] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5034] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5034] exit_group(0) = ?
[pid 5034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5034, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./18/binderfs") = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./18/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./18/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./18") = 0
mkdir("./19", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5036
./strace-static-x86_64: Process 5036 attached
[pid 5036] chdir("./19") = 0
[pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5036] setpgid(0, 0) = 0
[pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5036] write(3, "1000", 4) = 4
[pid 5036] close(3) = 0
[pid 5036] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5036] memfd_create("syzkaller", 0) = 3
[pid 5036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5036] 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"..., 4194304) = 4194304
[pid 5036] munmap(0x7fad04161000, 4194304) = 0
[pid 5036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5036] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5036] close(3) = 0
[pid 5036] mkdir("./file0", 0777) = 0
[ 75.323389][ T5036] loop0: detected capacity change from 0 to 8192
[ 75.333718][ T5036] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 75.346745][ T5036] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 75.356049][ T5036] REISERFS (device loop0): using ordered data mode
[ 75.362686][ T5036] reiserfs: using flush barriers
[pid 5036] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5036] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5036] chdir("./file0") = 0
[pid 5036] ioctl(4, LOOP_CLR_FD) = 0
[pid 5036] close(4) = 0
[pid 5036] mkdir(".", 0777) = -1 EEXIST (File exists)
[pid 5036] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5036] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5036] chdir(".") = 0
[pid 5036] creat("./bus", 000) = 5
[pid 5036] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5036] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 75.368444][ T5036] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 75.384981][ T5036] REISERFS (device loop0): checking transaction log (loop0)
[ 75.392888][ T5036] REISERFS (device loop0): Using r5 hash to sort names
[ 75.401800][ T5036] reiserfs: enabling write barrier flush mode
[ 75.409738][ T5036] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5036] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5036] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5036] exit_group(0) = ?
[pid 5036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./19/binderfs") = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./19/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./19") = 0
mkdir("./20", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5038
./strace-static-x86_64: Process 5038 attached
[pid 5038] chdir("./20") = 0
[pid 5038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5038] setpgid(0, 0) = 0
[pid 5038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5038] write(3, "1000", 4) = 4
[pid 5038] close(3) = 0
[pid 5038] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5038] memfd_create("syzkaller", 0) = 3
[pid 5038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5038] 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"..., 4194304) = 4194304
[pid 5038] munmap(0x7fad04161000, 4194304) = 0
[pid 5038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5038] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5038] close(3) = 0
[pid 5038] mkdir("./file0", 0777) = 0
[ 75.634154][ T5038] loop0: detected capacity change from 0 to 8192
[ 75.645396][ T5038] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 75.658527][ T5038] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 75.667859][ T5038] REISERFS (device loop0): using ordered data mode
[ 75.674407][ T5038] reiserfs: using flush barriers
[pid 5038] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5038] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5038] chdir("./file0") = 0
[pid 5038] ioctl(4, LOOP_CLR_FD) = 0
[pid 5038] close(4) = 0
[pid 5038] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 75.680176][ T5038] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 75.696721][ T5038] REISERFS (device loop0): checking transaction log (loop0)
[ 75.704694][ T5038] REISERFS (device loop0): Using r5 hash to sort names
[pid 5038] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5038] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5038] chdir(".") = 0
[pid 5038] creat("./bus", 000) = 5
[pid 5038] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5038] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 75.730225][ T5038] reiserfs: enabling write barrier flush mode
[ 75.738019][ T5038] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5038] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5038] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5038] exit_group(0) = ?
[pid 5038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5038, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} ---
umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./20/binderfs") = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./20/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./20") = 0
mkdir("./21", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5040
./strace-static-x86_64: Process 5040 attached
[pid 5040] chdir("./21") = 0
[pid 5040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5040] setpgid(0, 0) = 0
[pid 5040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5040] write(3, "1000", 4) = 4
[pid 5040] close(3) = 0
[pid 5040] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5040] memfd_create("syzkaller", 0) = 3
[pid 5040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5040] 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"..., 4194304) = 4194304
[pid 5040] munmap(0x7fad04161000, 4194304) = 0
[pid 5040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5040] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5040] close(3) = 0
[pid 5040] mkdir("./file0", 0777) = 0
[ 75.934685][ T5040] loop0: detected capacity change from 0 to 8192
[ 75.944786][ T5040] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 75.957855][ T5040] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 75.967176][ T5040] REISERFS (device loop0): using ordered data mode
[ 75.973928][ T5040] reiserfs: using flush barriers
[pid 5040] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5040] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5040] chdir("./file0") = 0
[pid 5040] ioctl(4, LOOP_CLR_FD) = 0
[pid 5040] close(4) = 0
[pid 5040] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 75.979619][ T5040] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 75.996068][ T5040] REISERFS (device loop0): checking transaction log (loop0)
[ 76.004100][ T5040] REISERFS (device loop0): Using r5 hash to sort names
[ 76.028783][ T5040] reiserfs: enabling write barrier flush mode
[pid 5040] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5040] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5040] chdir(".") = 0
[pid 5040] creat("./bus", 000) = 5
[pid 5040] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5040] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 76.036676][ T5040] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5040] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5040] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5040] exit_group(0) = ?
[pid 5040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5040, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./21/binderfs") = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./21/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./21") = 0
mkdir("./22", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5042
./strace-static-x86_64: Process 5042 attached
[pid 5042] chdir("./22") = 0
[pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5042] setpgid(0, 0) = 0
[pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5042] write(3, "1000", 4) = 4
[pid 5042] close(3) = 0
[pid 5042] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5042] memfd_create("syzkaller", 0) = 3
[pid 5042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5042] 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"..., 4194304) = 4194304
[pid 5042] munmap(0x7fad04161000, 4194304) = 0
[pid 5042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5042] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5042] close(3) = 0
[pid 5042] mkdir("./file0", 0777) = 0
[ 76.250219][ T5042] loop0: detected capacity change from 0 to 8192
[ 76.259558][ T5042] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 76.272863][ T5042] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 76.282156][ T5042] REISERFS (device loop0): using ordered data mode
[ 76.288677][ T5042] reiserfs: using flush barriers
[pid 5042] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5042] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5042] chdir("./file0") = 0
[pid 5042] ioctl(4, LOOP_CLR_FD) = 0
[pid 5042] close(4) = 0
[pid 5042] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 76.294457][ T5042] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 76.310787][ T5042] REISERFS (device loop0): checking transaction log (loop0)
[ 76.318633][ T5042] REISERFS (device loop0): Using r5 hash to sort names
[ 76.335414][ T5042] reiserfs: enabling write barrier flush mode
[pid 5042] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5042] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5042] chdir(".") = 0
[pid 5042] creat("./bus", 000) = 5
[pid 5042] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5042] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 76.343862][ T5042] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5042] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5042] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5042] exit_group(0) = ?
[pid 5042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5042, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./22/binderfs") = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./22/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./22/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./22") = 0
mkdir("./23", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5044
./strace-static-x86_64: Process 5044 attached
[pid 5044] chdir("./23") = 0
[pid 5044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5044] setpgid(0, 0) = 0
[pid 5044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5044] write(3, "1000", 4) = 4
[pid 5044] close(3) = 0
[pid 5044] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5044] memfd_create("syzkaller", 0) = 3
[pid 5044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5044] 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"..., 4194304) = 4194304
[pid 5044] munmap(0x7fad04161000, 4194304) = 0
[pid 5044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5044] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5044] close(3) = 0
[pid 5044] mkdir("./file0", 0777) = 0
[ 76.545801][ T5044] loop0: detected capacity change from 0 to 8192
[ 76.555779][ T5044] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 76.568857][ T5044] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 76.578110][ T5044] REISERFS (device loop0): using ordered data mode
[ 76.584724][ T5044] reiserfs: using flush barriers
[pid 5044] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5044] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5044] chdir("./file0") = 0
[pid 5044] ioctl(4, LOOP_CLR_FD) = 0
[pid 5044] close(4) = 0
[pid 5044] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 76.590446][ T5044] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 76.607082][ T5044] REISERFS (device loop0): checking transaction log (loop0)
[ 76.615119][ T5044] REISERFS (device loop0): Using r5 hash to sort names
[ 76.631190][ T5044] reiserfs: enabling write barrier flush mode
[pid 5044] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5044] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5044] chdir(".") = 0
[pid 5044] creat("./bus", 000) = 5
[pid 5044] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5044] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 76.638911][ T5044] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5044] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5044] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5044] exit_group(0) = ?
[pid 5044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5044, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./23/binderfs") = 0
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./23/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./23") = 0
mkdir("./24", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5046
./strace-static-x86_64: Process 5046 attached
[pid 5046] chdir("./24") = 0
[pid 5046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5046] setpgid(0, 0) = 0
[pid 5046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5046] write(3, "1000", 4) = 4
[pid 5046] close(3) = 0
[pid 5046] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5046] memfd_create("syzkaller", 0) = 3
[pid 5046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5046] 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"..., 4194304) = 4194304
[pid 5046] munmap(0x7fad04161000, 4194304) = 0
[pid 5046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5046] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5046] close(3) = 0
[pid 5046] mkdir("./file0", 0777) = 0
[ 76.863142][ T5046] loop0: detected capacity change from 0 to 8192
[ 76.873456][ T5046] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 76.886646][ T5046] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 76.896082][ T5046] REISERFS (device loop0): using ordered data mode
[ 76.902791][ T5046] reiserfs: using flush barriers
[pid 5046] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5046] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5046] chdir("./file0") = 0
[pid 5046] ioctl(4, LOOP_CLR_FD) = 0
[pid 5046] close(4) = 0
[pid 5046] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 76.908507][ T5046] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 76.924899][ T5046] REISERFS (device loop0): checking transaction log (loop0)
[ 76.932976][ T5046] REISERFS (device loop0): Using r5 hash to sort names
[pid 5046] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5046] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5046] chdir(".") = 0
[pid 5046] creat("./bus", 000) = 5
[pid 5046] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5046] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 76.962385][ T5046] reiserfs: enabling write barrier flush mode
[ 76.970564][ T5046] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5046] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5046] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5046] exit_group(0) = ?
[pid 5046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5046, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./24/binderfs") = 0
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./24/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./24/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./24") = 0
mkdir("./25", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5048
./strace-static-x86_64: Process 5048 attached
[pid 5048] chdir("./25") = 0
[pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5048] setpgid(0, 0) = 0
[pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5048] write(3, "1000", 4) = 4
[pid 5048] close(3) = 0
[pid 5048] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5048] memfd_create("syzkaller", 0) = 3
[pid 5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5048] 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"..., 4194304) = 4194304
[pid 5048] munmap(0x7fad04161000, 4194304) = 0
[pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5048] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5048] close(3) = 0
[pid 5048] mkdir("./file0", 0777) = 0
[ 77.192656][ T5048] loop0: detected capacity change from 0 to 8192
[ 77.201821][ T5048] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 77.214839][ T5048] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 77.224165][ T5048] REISERFS (device loop0): using ordered data mode
[ 77.230807][ T5048] reiserfs: using flush barriers
[pid 5048] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5048] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5048] chdir("./file0") = 0
[pid 5048] ioctl(4, LOOP_CLR_FD) = 0
[pid 5048] close(4) = 0
[pid 5048] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 77.236527][ T5048] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 77.252938][ T5048] REISERFS (device loop0): checking transaction log (loop0)
[ 77.260925][ T5048] REISERFS (device loop0): Using r5 hash to sort names
[ 77.282683][ T5048] reiserfs: enabling write barrier flush mode
[pid 5048] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5048] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5048] chdir(".") = 0
[pid 5048] creat("./bus", 000) = 5
[pid 5048] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5048] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 77.292135][ T5048] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5048] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5048] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5048] exit_group(0) = ?
[pid 5048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./25/binderfs") = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./25/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./25/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./25") = 0
mkdir("./26", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5050
./strace-static-x86_64: Process 5050 attached
[pid 5050] chdir("./26") = 0
[pid 5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5050] setpgid(0, 0) = 0
[pid 5050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5050] write(3, "1000", 4) = 4
[pid 5050] close(3) = 0
[pid 5050] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5050] memfd_create("syzkaller", 0) = 3
[pid 5050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5050] 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"..., 4194304) = 4194304
[pid 5050] munmap(0x7fad04161000, 4194304) = 0
[pid 5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5050] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5050] close(3) = 0
[pid 5050] mkdir("./file0", 0777) = 0
[ 77.504027][ T5050] loop0: detected capacity change from 0 to 8192
[ 77.514537][ T5050] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 77.527820][ T5050] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 77.537378][ T5050] REISERFS (device loop0): using ordered data mode
[ 77.544129][ T5050] reiserfs: using flush barriers
[pid 5050] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5050] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5050] chdir("./file0") = 0
[pid 5050] ioctl(4, LOOP_CLR_FD) = 0
[pid 5050] close(4) = 0
[pid 5050] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 77.549895][ T5050] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 77.566460][ T5050] REISERFS (device loop0): checking transaction log (loop0)
[ 77.574510][ T5050] REISERFS (device loop0): Using r5 hash to sort names
[pid 5050] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5050] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5050] chdir(".") = 0
[pid 5050] creat("./bus", 000) = 5
[pid 5050] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5050] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 77.603454][ T5050] reiserfs: enabling write barrier flush mode
[ 77.612533][ T5050] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5050] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5050] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5050] exit_group(0) = ?
[pid 5050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5050, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./26/binderfs") = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./26/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./26/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./26") = 0
mkdir("./27", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5052
./strace-static-x86_64: Process 5052 attached
[pid 5052] chdir("./27") = 0
[pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5052] setpgid(0, 0) = 0
[pid 5052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5052] write(3, "1000", 4) = 4
[pid 5052] close(3) = 0
[pid 5052] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5052] memfd_create("syzkaller", 0) = 3
[pid 5052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5052] 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"..., 4194304) = 4194304
[pid 5052] munmap(0x7fad04161000, 4194304) = 0
[pid 5052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5052] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5052] close(3) = 0
[pid 5052] mkdir("./file0", 0777) = 0
[ 77.832156][ T5052] loop0: detected capacity change from 0 to 8192
[ 77.841608][ T5052] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 77.854753][ T5052] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 77.864096][ T5052] REISERFS (device loop0): using ordered data mode
[ 77.870692][ T5052] reiserfs: using flush barriers
[pid 5052] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5052] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5052] chdir("./file0") = 0
[pid 5052] ioctl(4, LOOP_CLR_FD) = 0
[pid 5052] close(4) = 0
[pid 5052] mkdir(".", 0777) = -1 EEXIST (File exists)
[pid 5052] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5052] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5052] chdir(".") = 0
[pid 5052] creat("./bus", 000) = 5
[pid 5052] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5052] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 77.876441][ T5052] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 77.893038][ T5052] REISERFS (device loop0): checking transaction log (loop0)
[ 77.901165][ T5052] REISERFS (device loop0): Using r5 hash to sort names
[ 77.911407][ T5052] reiserfs: enabling write barrier flush mode
[ 77.919179][ T5052] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5052] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5052] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5052] exit_group(0) = ?
[pid 5052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5052, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./27/binderfs") = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./27/file0") = 0
getdents64(3, 0x555555c9e620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5054
./strace-static-x86_64: Process 5054 attached
[pid 5054] chdir("./28") = 0
[pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5054] setpgid(0, 0) = 0
[pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5054] write(3, "1000", 4) = 4
[pid 5054] close(3) = 0
[pid 5054] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5054] memfd_create("syzkaller", 0) = 3
[pid 5054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5054] 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"..., 4194304) = 4194304
[pid 5054] munmap(0x7fad04161000, 4194304) = 0
[pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5054] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5054] close(3) = 0
[pid 5054] mkdir("./file0", 0777) = 0
[ 78.128763][ T5054] loop0: detected capacity change from 0 to 8192
[ 78.139017][ T5054] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 78.152667][ T5054] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 78.162039][ T5054] REISERFS (device loop0): using ordered data mode
[ 78.168543][ T5054] reiserfs: using flush barriers
[pid 5054] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5054] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5054] chdir("./file0") = 0
[pid 5054] ioctl(4, LOOP_CLR_FD) = 0
[pid 5054] close(4) = 0
[pid 5054] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 78.174790][ T5054] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 78.191463][ T5054] REISERFS (device loop0): checking transaction log (loop0)
[ 78.199382][ T5054] REISERFS (device loop0): Using r5 hash to sort names
[ 78.219204][ T5054] reiserfs: enabling write barrier flush mode
[pid 5054] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5054] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5054] chdir(".") = 0
[pid 5054] creat("./bus", 000) = 5
[pid 5054] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5054] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 78.227274][ T5054] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5054] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5054] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5054] exit_group(0) = ?
[pid 5054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5054, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./28/binderfs") = 0
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./28/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./28/file0") = 0
getdents64(3, 0x555555c9e620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5056
./strace-static-x86_64: Process 5056 attached
[pid 5056] chdir("./29") = 0
[pid 5056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5056] setpgid(0, 0) = 0
[pid 5056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5056] write(3, "1000", 4) = 4
[pid 5056] close(3) = 0
[pid 5056] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5056] memfd_create("syzkaller", 0) = 3
[pid 5056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5056] 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"..., 4194304) = 4194304
[pid 5056] munmap(0x7fad04161000, 4194304) = 0
[pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5056] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5056] close(3) = 0
[pid 5056] mkdir("./file0", 0777) = 0
[ 78.450786][ T5056] loop0: detected capacity change from 0 to 8192
[ 78.461242][ T5056] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 78.474397][ T5056] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 78.483698][ T5056] REISERFS (device loop0): using ordered data mode
[ 78.490213][ T5056] reiserfs: using flush barriers
[pid 5056] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5056] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5056] chdir("./file0") = 0
[pid 5056] ioctl(4, LOOP_CLR_FD) = 0
[pid 5056] close(4) = 0
[pid 5056] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 78.496115][ T5056] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 78.512515][ T5056] REISERFS (device loop0): checking transaction log (loop0)
[ 78.521065][ T5056] REISERFS (device loop0): Using r5 hash to sort names
[ 78.542253][ T5056] reiserfs: enabling write barrier flush mode
[pid 5056] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5056] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5056] chdir(".") = 0
[pid 5056] creat("./bus", 000) = 5
[pid 5056] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5056] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 78.554851][ T5056] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5056] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5056] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5056] exit_group(0) = ?
[pid 5056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5056, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./29/binderfs") = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./29/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./29") = 0
mkdir("./30", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5058
./strace-static-x86_64: Process 5058 attached
[pid 5058] chdir("./30") = 0
[pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5058] setpgid(0, 0) = 0
[pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5058] write(3, "1000", 4) = 4
[pid 5058] close(3) = 0
[pid 5058] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5058] memfd_create("syzkaller", 0) = 3
[pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5058] 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"..., 4194304) = 4194304
[pid 5058] munmap(0x7fad04161000, 4194304) = 0
[pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5058] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5058] close(3) = 0
[pid 5058] mkdir("./file0", 0777) = 0
[ 78.761033][ T5058] loop0: detected capacity change from 0 to 8192
[ 78.769765][ T5058] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 78.783595][ T5058] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 78.796087][ T5058] REISERFS (device loop0): using ordered data mode
[ 78.802869][ T5058] reiserfs: using flush barriers
[pid 5058] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5058] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5058] chdir("./file0") = 0
[pid 5058] ioctl(4, LOOP_CLR_FD) = 0
[pid 5058] close(4) = 0
[pid 5058] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 78.808588][ T5058] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 78.825058][ T5058] REISERFS (device loop0): checking transaction log (loop0)
[ 78.832902][ T5058] REISERFS (device loop0): Using r5 hash to sort names
[ 78.851117][ T5058] reiserfs: enabling write barrier flush mode
[pid 5058] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5058] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5058] chdir(".") = 0
[pid 5058] creat("./bus", 000) = 5
[pid 5058] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5058] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 78.861095][ T5058] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5058] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5058] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5058] exit_group(0) = ?
[pid 5058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5058, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./30/binderfs") = 0
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./30/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./30") = 0
mkdir("./31", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5060 attached
, child_tidptr=0x555555c9d5d0) = 5060
[pid 5060] chdir("./31") = 0
[pid 5060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5060] setpgid(0, 0) = 0
[pid 5060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5060] write(3, "1000", 4) = 4
[pid 5060] close(3) = 0
[pid 5060] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5060] memfd_create("syzkaller", 0) = 3
[pid 5060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5060] 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"..., 4194304) = 4194304
[pid 5060] munmap(0x7fad04161000, 4194304) = 0
[pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5060] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5060] close(3) = 0
[pid 5060] mkdir("./file0", 0777) = 0
[ 79.078528][ T5060] loop0: detected capacity change from 0 to 8192
[ 79.089046][ T5060] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 79.102136][ T5060] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 79.111625][ T5060] REISERFS (device loop0): using ordered data mode
[ 79.118214][ T5060] reiserfs: using flush barriers
[pid 5060] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5060] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5060] chdir("./file0") = 0
[pid 5060] ioctl(4, LOOP_CLR_FD) = 0
[pid 5060] close(4) = 0
[pid 5060] mkdir(".", 0777) = -1 EEXIST (File exists)
[pid 5060] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5060] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5060] chdir(".") = 0
[pid 5060] creat("./bus", 000) = 5
[pid 5060] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5060] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 79.124126][ T5060] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 79.140905][ T5060] REISERFS (device loop0): checking transaction log (loop0)
[ 79.148831][ T5060] REISERFS (device loop0): Using r5 hash to sort names
[ 79.161201][ T5060] reiserfs: enabling write barrier flush mode
[ 79.170021][ T5060] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5060] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5060] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5060] exit_group(0) = ?
[pid 5060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./31/binderfs") = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./31/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./31/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./31") = 0
mkdir("./32", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5062
./strace-static-x86_64: Process 5062 attached
[pid 5062] chdir("./32") = 0
[pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5062] setpgid(0, 0) = 0
[pid 5062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5062] write(3, "1000", 4) = 4
[pid 5062] close(3) = 0
[pid 5062] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5062] memfd_create("syzkaller", 0) = 3
[pid 5062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5062] 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"..., 4194304) = 4194304
[pid 5062] munmap(0x7fad04161000, 4194304) = 0
[pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5062] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5062] close(3) = 0
[pid 5062] mkdir("./file0", 0777) = 0
[ 79.361318][ T5062] loop0: detected capacity change from 0 to 8192
[ 79.370987][ T5062] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 79.385672][ T5062] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 79.395019][ T5062] REISERFS (device loop0): using ordered data mode
[ 79.401655][ T5062] reiserfs: using flush barriers
[pid 5062] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5062] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5062] chdir("./file0") = 0
[pid 5062] ioctl(4, LOOP_CLR_FD) = 0
[pid 5062] close(4) = 0
[pid 5062] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 79.407325][ T5062] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 79.423744][ T5062] REISERFS (device loop0): checking transaction log (loop0)
[ 79.431532][ T5062] REISERFS (device loop0): Using r5 hash to sort names
[ 79.441461][ T5062] reiserfs: enabling write barrier flush mode
[pid 5062] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5062] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5062] chdir(".") = 0
[pid 5062] creat("./bus", 000) = 5
[pid 5062] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5062] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 79.459020][ T5062] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5062] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5062] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5062] exit_group(0) = ?
[pid 5062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5062, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./32/binderfs") = 0
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./32/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./32/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./32") = 0
mkdir("./33", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5064 attached
, child_tidptr=0x555555c9d5d0) = 5064
[pid 5064] chdir("./33") = 0
[pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5064] setpgid(0, 0) = 0
[pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5064] write(3, "1000", 4) = 4
[pid 5064] close(3) = 0
[pid 5064] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5064] memfd_create("syzkaller", 0) = 3
[pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5064] 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"..., 4194304) = 4194304
[pid 5064] munmap(0x7fad04161000, 4194304) = 0
[pid 5064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5064] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5064] close(3) = 0
[pid 5064] mkdir("./file0", 0777) = 0
[ 79.684490][ T5064] loop0: detected capacity change from 0 to 8192
[ 79.693204][ T5064] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 79.706440][ T5064] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 79.715931][ T5064] REISERFS (device loop0): using ordered data mode
[ 79.722733][ T5064] reiserfs: using flush barriers
[pid 5064] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5064] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5064] chdir("./file0") = 0
[pid 5064] ioctl(4, LOOP_CLR_FD) = 0
[pid 5064] close(4) = 0
[pid 5064] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 79.728612][ T5064] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 79.745068][ T5064] REISERFS (device loop0): checking transaction log (loop0)
[ 79.753131][ T5064] REISERFS (device loop0): Using r5 hash to sort names
[pid 5064] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5064] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5064] chdir(".") = 0
[pid 5064] creat("./bus", 000) = 5
[pid 5064] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5064] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 79.781463][ T5064] reiserfs: enabling write barrier flush mode
[ 79.789361][ T5064] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5064] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5064] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5064] exit_group(0) = ?
[pid 5064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5064, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./33/binderfs") = 0
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./33/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./33/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./33") = 0
mkdir("./34", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5066
./strace-static-x86_64: Process 5066 attached
[pid 5066] chdir("./34") = 0
[pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5066] setpgid(0, 0) = 0
[pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5066] write(3, "1000", 4) = 4
[pid 5066] close(3) = 0
[pid 5066] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5066] memfd_create("syzkaller", 0) = 3
[pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5066] 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"..., 4194304) = 4194304
[pid 5066] munmap(0x7fad04161000, 4194304) = 0
[pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5066] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5066] close(3) = 0
[pid 5066] mkdir("./file0", 0777) = 0
[ 79.989866][ T5066] loop0: detected capacity change from 0 to 8192
[ 79.998993][ T5066] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 80.012180][ T5066] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 80.021456][ T5066] REISERFS (device loop0): using ordered data mode
[ 80.027987][ T5066] reiserfs: using flush barriers
[pid 5066] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5066] chdir("./file0") = 0
[pid 5066] ioctl(4, LOOP_CLR_FD) = 0
[pid 5066] close(4) = 0
[pid 5066] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 80.033880][ T5066] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 80.050535][ T5066] REISERFS (device loop0): checking transaction log (loop0)
[ 80.058426][ T5066] REISERFS (device loop0): Using r5 hash to sort names
[pid 5066] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5066] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5066] chdir(".") = 0
[pid 5066] creat("./bus", 000) = 5
[pid 5066] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5066] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 80.082353][ T5066] reiserfs: enabling write barrier flush mode
[ 80.090233][ T5066] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5066] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5066] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5066] exit_group(0) = ?
[pid 5066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./34/binderfs") = 0
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./34/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./34/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./34") = 0
mkdir("./35", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5068
./strace-static-x86_64: Process 5068 attached
[pid 5068] chdir("./35") = 0
[pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5068] setpgid(0, 0) = 0
[pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5068] write(3, "1000", 4) = 4
[pid 5068] close(3) = 0
[pid 5068] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5068] memfd_create("syzkaller", 0) = 3
[pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5068] 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"..., 4194304) = 4194304
[pid 5068] munmap(0x7fad04161000, 4194304) = 0
[pid 5068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5068] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5068] close(3) = 0
[pid 5068] mkdir("./file0", 0777) = 0
[ 80.320227][ T5068] loop0: detected capacity change from 0 to 8192
[ 80.329764][ T5068] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 80.342796][ T5068] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 80.352051][ T5068] REISERFS (device loop0): using ordered data mode
[ 80.358625][ T5068] reiserfs: using flush barriers
[pid 5068] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5068] chdir("./file0") = 0
[pid 5068] ioctl(4, LOOP_CLR_FD) = 0
[pid 5068] close(4) = 0
[pid 5068] mkdir(".", 0777) = -1 EEXIST (File exists)
[pid 5068] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5068] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5068] chdir(".") = 0
[pid 5068] creat("./bus", 000) = 5
[pid 5068] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5068] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6
[ 80.364380][ T5068] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 80.380819][ T5068] REISERFS (device loop0): checking transaction log (loop0)
[ 80.388688][ T5068] REISERFS (device loop0): Using r5 hash to sort names
[ 80.400731][ T5068] reiserfs: enabling write barrier flush mode
[ 80.408559][ T5068] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid 5068] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\x2f"..., 4294967230) = 1970176
[pid 5068] mmap(0x20000000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 6, 0) = 0x20000000
[pid 5068] exit_group(0) = ?
[pid 5068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555c9e620 /* 4 entries */, 32768) = 112
umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./35/binderfs") = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./35/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555ca6660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555ca6660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./35/file0") = 0
getdents64(3, 0x555555c9e620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./35") = 0
mkdir("./36", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c9d5d0) = 5070
./strace-static-x86_64: Process 5070 attached
[pid 5070] chdir("./36") = 0
[pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5070] setpgid(0, 0) = 0
[pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5070] write(3, "1000", 4) = 4
[pid 5070] close(3) = 0
[pid 5070] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5070] memfd_create("syzkaller", 0) = 3
[pid 5070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fad04161000
[pid 5070] 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"..., 4194304) = 4194304
[pid 5070] munmap(0x7fad04161000, 4194304) = 0
[pid 5070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5070] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5070] close(3) = 0
[pid 5070] mkdir("./file0", 0777) = 0
[ 80.628149][ T5070] loop0: detected capacity change from 0 to 8192
[ 80.639091][ T5070] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 80.652176][ T5070] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[ 80.661580][ T5070] REISERFS (device loop0): using ordered data mode
[ 80.668106][ T5070] reiserfs: using flush barriers
[pid 5070] mount("/dev/loop0", "./file0", "reiserfs", MS_RDONLY|MS_NOSUID|MS_DIRSYNC|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, "") = 0
[pid 5070] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5070] chdir("./file0") = 0
[pid 5070] ioctl(4, LOOP_CLR_FD) = 0
[pid 5070] close(4) = 0
[pid 5070] mkdir(".", 0777) = -1 EEXIST (File exists)
[ 80.674027][ T5070] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 80.690445][ T5070] REISERFS (device loop0): checking transaction log (loop0)
[ 80.698451][ T5070] REISERFS (device loop0): Using r5 hash to sort names
[ 80.712670][ T5070] reiserfs: enabling write barrier flush mode
[pid 5070] mount(NULL, ".", 0x200000c0, MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0
[pid 5070] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4
[pid 5070] chdir(".") = 0
[pid 5070] creat("./bus", 000) = 5
[pid 5070] ioctl(5, FS_IOC_GETVERSION, 0x20000040) = 0
[pid 5070] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6