./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4209931033

<...>
Warning: Permanently added '10.128.0.174' (ED25519) to the list of known hosts.
execve("./syz-executor4209931033", ["./syz-executor4209931033"], 0x7ffd943b0d10 /* 10 vars */) = 0
brk(NULL)                               = 0x55555562f000
brk(0x55555562fd00)                     = 0x55555562fd00
arch_prctl(ARCH_SET_FS, 0x55555562f380) = 0
set_tid_address(0x55555562f650)         = 5051
set_robust_list(0x55555562f660, 24)     = 0
rseq(0x55555562fca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor4209931033", 4096) = 28
getrandom("\x24\x49\x91\xb6\xba\x1a\x91\xef", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55555562fd00
brk(0x555555650d00)                     = 0x555555650d00
brk(0x555555651000)                     = 0x555555651000
mprotect(0x7f8b8b377000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
mkdir("./syzkaller.JHOzFo", 0700)       = 0
chmod("./syzkaller.JHOzFo", 0777)       = 0
chdir("./syzkaller.JHOzFo")             = 0
mkdir("./0", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5052 attached
, child_tidptr=0x55555562f650) = 5052
[pid  5052] set_robust_list(0x55555562f660, 24) = 0
[pid  5052] chdir("./0")                = 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) = 0x7f8b82ec3000
[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(0x7f8b82ec3000, 138412032) = 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
[   55.885373][ T5052] loop0: detected capacity change from 0 to 8192
[   55.904233][ T5052] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   55.917305][ T5052] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   55.926768][ T5052] REISERFS (device loop0): using ordered data mode
[   55.933428][ T5052] reiserfs: using flush barriers
[   55.939763][ 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
[   55.956441][ T5052] REISERFS (device loop0): checking transaction log (loop0)
[   55.966389][ T5052] REISERFS (device loop0): Using r5 hash to sort names
[   55.973648][ T5052] REISERFS (device loop0): using 3.5.x disk format
[pid  5052] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 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
[   55.981439][ T5052] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5052] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5052] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5052] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5052] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5052] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[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=18 /* 0.18 s */} ---
umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./0/binderfs")                  = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./0/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./0")                            = 0
mkdir("./1", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5055 attached
 <unfinished ...>
[pid  5055] set_robust_list(0x55555562f660, 24) = 0
[pid  5055] chdir("./1")                = 0
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5055
[pid  5055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5055] setpgid(0, 0)               = 0
[pid  5055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5055] write(3, "1000", 4)         = 4
[pid  5055] close(3)                    = 0
[pid  5055] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5055] memfd_create("syzkaller", 0) = 3
[pid  5055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5055] 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  5055] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5055] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5055] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5055] close(3)                    = 0
[pid  5055] mkdir("./file0", 0777)      = 0
[   56.463718][ T5055] loop0: detected capacity change from 0 to 8192
[   56.489633][ T5055] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   56.502647][ T5055] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   56.511898][ T5055] REISERFS (device loop0): using ordered data mode
[   56.518449][ T5055] reiserfs: using flush barriers
[   56.524832][ T5055] 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
[   56.541274][ T5055] REISERFS (device loop0): checking transaction log (loop0)
[   56.550600][ T5055] REISERFS (device loop0): Using r5 hash to sort names
[   56.557494][ T5055] REISERFS (device loop0): using 3.5.x disk format
[pid  5055] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5055] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5055] chdir("./file0")            = 0
[pid  5055] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5055] close(4)                    = 0
[   56.564534][ T5055] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5055] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5055] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5055] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5055] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5055] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5055] exit_group(0)               = ?
[pid  5055] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5055, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./1/binderfs")                  = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./1/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./1")                            = 0
mkdir("./2", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5057 attached
, child_tidptr=0x55555562f650) = 5057
[pid  5057] set_robust_list(0x55555562f660, 24) = 0
[pid  5057] chdir("./2")                = 0
[pid  5057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5057] setpgid(0, 0)               = 0
[pid  5057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5057] write(3, "1000", 4)         = 4
[pid  5057] close(3)                    = 0
[pid  5057] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5057] memfd_create("syzkaller", 0) = 3
[pid  5057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5057] 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  5057] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5057] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5057] close(3)                    = 0
[pid  5057] mkdir("./file0", 0777)      = 0
[   57.027882][ T5057] loop0: detected capacity change from 0 to 8192
[   57.054472][ T5057] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   57.067473][ T5057] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   57.076763][ T5057] REISERFS (device loop0): using ordered data mode
[   57.083278][ T5057] reiserfs: using flush barriers
[   57.089678][ T5057] 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
[   57.106089][ T5057] REISERFS (device loop0): checking transaction log (loop0)
[   57.114297][ T5057] REISERFS (device loop0): Using r5 hash to sort names
[   57.121162][ T5057] REISERFS (device loop0): using 3.5.x disk format
[pid  5057] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5057] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5057] chdir("./file0")            = 0
[pid  5057] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5057] close(4)                    = 0
[pid  5057] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   57.128018][ T5057] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5057] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5057] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5057] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5057] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5057] exit_group(0)               = ?
[pid  5057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5057, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./2/binderfs")                  = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./2/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5059
./strace-static-x86_64: Process 5059 attached
[pid  5059] set_robust_list(0x55555562f660, 24) = 0
[pid  5059] chdir("./3")                = 0
[pid  5059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5059] setpgid(0, 0)               = 0
[pid  5059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5059] write(3, "1000", 4)         = 4
[pid  5059] close(3)                    = 0
[pid  5059] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5059] memfd_create("syzkaller", 0) = 3
[pid  5059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5059] 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  5059] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5059] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5059] close(3)                    = 0
[pid  5059] mkdir("./file0", 0777)      = 0
[   57.582464][ T5059] loop0: detected capacity change from 0 to 8192
[   57.597662][ T5059] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   57.610776][ T5059] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   57.620070][ T5059] REISERFS (device loop0): using ordered data mode
[   57.626623][ T5059] reiserfs: using flush barriers
[pid  5059] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5059] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5059] chdir("./file0")            = 0
[pid  5059] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5059] close(4)                    = 0
[pid  5059] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   57.632756][ T5059] 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
[   57.649319][ T5059] REISERFS (device loop0): checking transaction log (loop0)
[   57.657758][ T5059] REISERFS (device loop0): Using r5 hash to sort names
[   57.664689][ T5059] REISERFS (device loop0): using 3.5.x disk format
[   57.671736][ T5059] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5059] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5059] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5059] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5059] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5059] exit_group(0)               = ?
[pid  5059] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5059, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./3/binderfs")                  = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./3/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./3")                            = 0
mkdir("./4", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5061 attached
 <unfinished ...>
[pid  5061] set_robust_list(0x55555562f660, 24) = 0
[pid  5061] chdir("./4")                = 0
[pid  5061] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5061
[pid  5061] <... prctl resumed>)        = 0
[pid  5061] setpgid(0, 0)               = 0
[pid  5061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5061] write(3, "1000", 4)         = 4
[pid  5061] close(3)                    = 0
[pid  5061] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5061] memfd_create("syzkaller", 0) = 3
[pid  5061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5061] 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  5061] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5061] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5061] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5061] close(3)                    = 0
[pid  5061] mkdir("./file0", 0777)      = 0
[   58.157876][ T5061] loop0: detected capacity change from 0 to 8192
[   58.168257][ T5061] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   58.181314][ T5061] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   58.192418][ T5061] REISERFS (device loop0): using ordered data mode
[   58.199029][ T5061] reiserfs: using flush barriers
[pid  5061] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5061] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5061] chdir("./file0")            = 0
[pid  5061] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5061] close(4)                    = 0
[pid  5061] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   58.205073][ T5061] 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
[   58.222057][ T5061] REISERFS (device loop0): checking transaction log (loop0)
[   58.230463][ T5061] REISERFS (device loop0): Using r5 hash to sort names
[   58.237380][ T5061] REISERFS (device loop0): using 3.5.x disk format
[   58.244343][ T5061] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5061] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[   58.366288][ T5061] 
[   58.368639][ T5061] ======================================================
[   58.375644][ T5061] WARNING: possible circular locking dependency detected
[   58.382651][ T5061] 6.6.0-syzkaller-12715-g6bdfe2d88b9f #0 Not tainted
[   58.389316][ T5061] ------------------------------------------------------
[   58.396324][ T5061] syz-executor420/5061 is trying to acquire lock:
[   58.402719][ T5061] ffff888016280090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0
[   58.411690][ T5061] 
[   58.411690][ T5061] but task is already holding lock:
[   58.419052][ T5061] ffff8880213b4da0 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17b/0x410
[   58.428018][ T5061] 
[   58.428018][ T5061] which lock already depends on the new lock.
[   58.428018][ T5061] 
[   58.438408][ T5061] 
[   58.438408][ T5061] the existing dependency chain (in reverse order) is:
[   58.447403][ T5061] 
[   58.447403][ T5061] -> #1 (&mm->mmap_lock){++++}-{3:3}:
[   58.454948][ T5061]        __might_fault+0xc1/0x120
[   58.459961][ T5061]        reiserfs_ioctl+0x125/0x2f0
[   58.465144][ T5061]        __se_sys_ioctl+0xf8/0x170
[   58.470239][ T5061]        do_syscall_64+0x44/0x110
[   58.475259][ T5061]        entry_SYSCALL_64_after_hwframe+0x63/0x6b
[   58.481668][ T5061] 
[   58.481668][ T5061] -> #0 (&sbi->lock){+.+.}-{3:3}:
[   58.488868][ T5061]        __lock_acquire+0x39ff/0x7f70
[   58.494228][ T5061]        lock_acquire+0x1e3/0x520
[   58.499328][ T5061]        __mutex_lock+0x136/0xd60
[   58.504345][ T5061]        reiserfs_write_lock+0x7a/0xd0
[   58.509791][ T5061]        reiserfs_dirty_inode+0xf2/0x240
[   58.515414][ T5061]        __mark_inode_dirty+0x305/0xd90
[   58.520952][ T5061]        touch_atime+0x34d/0x590
[   58.525886][ T5061]        generic_file_mmap+0xc6/0x120
[   58.531246][ T5061]        mmap_region+0xef2/0x2240
[   58.536264][ T5061]        do_mmap+0x8d3/0xfa0
[   58.540847][ T5061]        vm_mmap_pgoff+0x1dc/0x410
[   58.545950][ T5061]        ksys_mmap_pgoff+0x4ff/0x6d0
[   58.551224][ T5061]        do_syscall_64+0x44/0x110
[   58.556238][ T5061]        entry_SYSCALL_64_after_hwframe+0x63/0x6b
[   58.562654][ T5061] 
[   58.562654][ T5061] other info that might help us debug this:
[   58.562654][ T5061] 
[   58.572876][ T5061]  Possible unsafe locking scenario:
[   58.572876][ T5061] 
[   58.580317][ T5061]        CPU0                    CPU1
[   58.585677][ T5061]        ----                    ----
[   58.591107][ T5061]   lock(&mm->mmap_lock);
[   58.595438][ T5061]                                lock(&sbi->lock);
[   58.601925][ T5061]                                lock(&mm->mmap_lock);
[   58.608764][ T5061]   lock(&sbi->lock);
[   58.612734][ T5061] 
[   58.612734][ T5061]  *** DEADLOCK ***
[   58.612734][ T5061] 
[   58.620865][ T5061] 2 locks held by syz-executor420/5061:
[   58.626396][ T5061]  #0: ffff8880213b4da0 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17b/0x410
[   58.635793][ T5061]  #1: ffff888020f5c418 (sb_writers#9){.+.+}-{0:0}, at: generic_file_mmap+0xc6/0x120
[   58.645275][ T5061] 
[   58.645275][ T5061] stack backtrace:
[   58.651146][ T5061] CPU: 1 PID: 5061 Comm: syz-executor420 Not tainted 6.6.0-syzkaller-12715-g6bdfe2d88b9f #0
[   58.661198][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
[   58.671238][ T5061] Call Trace:
[   58.674509][ T5061]  <TASK>
[   58.677438][ T5061]  dump_stack_lvl+0x1e7/0x2d0
[   58.682115][ T5061]  ? nf_tcp_handle_invalid+0x650/0x650
[   58.687597][ T5061]  ? print_circular_bug+0x12b/0x1a0
[   58.692814][ T5061]  check_noncircular+0x375/0x4a0
[   58.697747][ T5061]  ? print_deadlock_bug+0x600/0x600
[   58.702942][ T5061]  __lock_acquire+0x39ff/0x7f70
[   58.707790][ T5061]  ? verify_lock_unused+0x140/0x140
[   58.712984][ T5061]  ? lockdep_unlock+0x169/0x300
[   58.717838][ T5061]  ? __lock_acquire+0x3683/0x7f70
[   58.722854][ T5061]  lock_acquire+0x1e3/0x520
[   58.727356][ T5061]  ? reiserfs_write_lock+0x7a/0xd0
[   58.732477][ T5061]  ? read_lock_is_recursive+0x20/0x20
[   58.738101][ T5061]  ? __might_sleep+0xc0/0xc0
[   58.742687][ T5061]  ? mark_lock+0x9a/0x340
[   58.747007][ T5061]  __mutex_lock+0x136/0xd60
[   58.751515][ T5061]  ? reiserfs_write_lock+0x7a/0xd0
[   58.756626][ T5061]  ? ktime_get_coarse_real_ts64+0x3a/0x120
[   58.762422][ T5061]  ? seqcount_lockdep_reader_access+0x157/0x220
[   58.768654][ T5061]  ? reiserfs_write_lock+0x7a/0xd0
[   58.773757][ T5061]  ? lockdep_hardirqs_on+0x98/0x140
[   58.778949][ T5061]  ? mutex_lock_nested+0x20/0x20
[   58.783874][ T5061]  ? seqcount_lockdep_reader_access+0x1d7/0x220
[   58.790111][ T5061]  ? ktime_get_coarse_real_ts64+0x3a/0x120
[   58.796003][ T5061]  ? generic_file_mmap+0xc6/0x120
[   58.801021][ T5061]  reiserfs_write_lock+0x7a/0xd0
[   58.805953][ T5061]  reiserfs_dirty_inode+0xf2/0x240
[   58.811408][ T5061]  ? reiserfs_free_inode+0x30/0x30
[   58.816520][ T5061]  ? bmap+0xe0/0xe0
[   58.820322][ T5061]  ? rcu_read_lock_any_held+0xb7/0x160
[   58.825770][ T5061]  ? reiserfs_free_inode+0x30/0x30
[   58.830873][ T5061]  __mark_inode_dirty+0x305/0xd90
[   58.835895][ T5061]  ? generic_file_mmap+0xc6/0x120
[   58.840911][ T5061]  touch_atime+0x34d/0x590
[   58.845319][ T5061]  generic_file_mmap+0xc6/0x120
[   58.850165][ T5061]  mmap_region+0xef2/0x2240
[   58.854667][ T5061]  ? file_mmap_ok+0x150/0x150
[   58.859337][ T5061]  ? cap_mmap_addr+0x162/0x2c0
[   58.864097][ T5061]  do_mmap+0x8d3/0xfa0
[   58.868166][ T5061]  ? mlock_future_ok+0x100/0x100
[   58.873115][ T5061]  ? ima_file_free+0x4b0/0x4b0
[   58.877896][ T5061]  vm_mmap_pgoff+0x1dc/0x410
[   58.882503][ T5061]  ? account_locked_vm+0x220/0x220
[   58.887636][ T5061]  ? __fget_files+0x29/0x480
[   58.892226][ T5061]  ? __fget_files+0x29/0x480
[   58.896816][ T5061]  ksys_mmap_pgoff+0x4ff/0x6d0
[   58.901575][ T5061]  do_syscall_64+0x44/0x110
[   58.906069][ T5061]  entry_SYSCALL_64_after_hwframe+0x63/0x6b
[   58.911974][ T5061] RIP: 0033:0x7f8b8b3021e9
[   58.916400][ T5061] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   58.936017][ T5061] RSP: 002b:00007ffd9a277028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   58.944432][ T5061] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8b8b3021e9
[   58.952393][ T5061] RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000
[   58.960355][ T5061] RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000000
[pid  5061] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5061] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5061] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5061] exit_group(0)               = ?
[pid  5061] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5061, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 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
[   58.968313][ T5061] R10: 0000000000028011 R11: 0000000000000246 R12: 00007ffd9a27705c
[   58.976273][ T5061] R13: 0000000000000004 R14: 431bde82d7b634db R15: 00007ffd9a277090
[   58.984244][ T5061]  </TASK>
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./4/binderfs")                  = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./4/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5064
./strace-static-x86_64: Process 5064 attached
[pid  5064] set_robust_list(0x55555562f660, 24) = 0
[pid  5064] chdir("./5")                = 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) = 0x7f8b82ec3000
[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(0x7f8b82ec3000, 138412032) = 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
[   59.229724][ T5064] loop0: detected capacity change from 0 to 8192
[   59.248892][ T5064] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   59.261924][ T5064] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   59.271181][ T5064] REISERFS (device loop0): using ordered data mode
[   59.277706][ T5064] reiserfs: using flush barriers
[   59.283699][ 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
[   59.300035][ T5064] REISERFS (device loop0): checking transaction log (loop0)
[   59.308177][ T5064] REISERFS (device loop0): Using r5 hash to sort names
[   59.315118][ T5064] REISERFS (device loop0): using 3.5.x disk format
[pid  5064] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 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] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   59.321987][ T5064] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5064] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5064] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5064] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5064] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./5/binderfs")                  = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./5/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5066
./strace-static-x86_64: Process 5066 attached
[pid  5066] set_robust_list(0x55555562f660, 24) = 0
[pid  5066] chdir("./6")                = 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) = 0x7f8b82ec3000
[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(0x7f8b82ec3000, 138412032) = 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
[   59.707060][ T5066] loop0: detected capacity change from 0 to 8192
[   59.730712][ T5066] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   59.743938][ T5066] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   59.753121][ T5066] REISERFS (device loop0): using ordered data mode
[   59.759655][ T5066] reiserfs: using flush barriers
[   59.765527][ 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
[   59.782031][ T5066] REISERFS (device loop0): checking transaction log (loop0)
[   59.789991][ T5066] REISERFS (device loop0): Using r5 hash to sort names
[   59.796884][ T5066] REISERFS (device loop0): using 3.5.x disk format
[pid  5066] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 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] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   59.803637][ T5066] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5066] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5066] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5066] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5066] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./6/binderfs")                  = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./6/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5068 attached
, child_tidptr=0x55555562f650) = 5068
[pid  5068] set_robust_list(0x55555562f660, 24) = 0
[pid  5068] chdir("./7")                = 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) = 0x7f8b82ec3000
[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(0x7f8b82ec3000, 138412032) = 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
[   60.202060][ T5068] loop0: detected capacity change from 0 to 8192
[   60.225515][ T5068] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   60.238603][ T5068] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   60.247815][ T5068] REISERFS (device loop0): using ordered data mode
[   60.254322][ T5068] reiserfs: using flush barriers
[   60.260156][ 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
[   60.276599][ T5068] REISERFS (device loop0): checking transaction log (loop0)
[   60.284732][ T5068] REISERFS (device loop0): Using r5 hash to sort names
[   60.291581][ T5068] REISERFS (device loop0): using 3.5.x disk format
[pid  5068] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 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
[   60.298442][ T5068] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5068] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5068] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5068] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5068] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5068] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[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=14 /* 0.14 s */} ---
umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./7/binderfs")                  = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./7/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./7")                            = 0
mkdir("./8", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5070 attached
, child_tidptr=0x55555562f650) = 5070
[pid  5070] set_robust_list(0x55555562f660, 24) = 0
[pid  5070] chdir("./8")                = 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) = 0x7f8b82ec3000
[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(0x7f8b82ec3000, 138412032) = 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
[   60.738310][ T5070] loop0: detected capacity change from 0 to 8192
[   60.752596][ T5070] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   60.765624][ T5070] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   60.774983][ T5070] REISERFS (device loop0): using ordered data mode
[   60.781506][ T5070] reiserfs: using flush barriers
[pid  5070] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 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] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   60.787608][ 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
[   60.804609][ T5070] REISERFS (device loop0): checking transaction log (loop0)
[   60.812562][ T5070] REISERFS (device loop0): Using r5 hash to sort names
[   60.819465][ T5070] REISERFS (device loop0): using 3.5.x disk format
[   60.826183][ T5070] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5070] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5070] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5070] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5070] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5070] exit_group(0)               = ?
[pid  5070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5070, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./8/binderfs")                  = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./8/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5072
./strace-static-x86_64: Process 5072 attached
[pid  5072] set_robust_list(0x55555562f660, 24) = 0
[pid  5072] chdir("./9")                = 0
[pid  5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5072] setpgid(0, 0)               = 0
[pid  5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5072] write(3, "1000", 4)         = 4
[pid  5072] close(3)                    = 0
[pid  5072] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5072] memfd_create("syzkaller", 0) = 3
[pid  5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5072] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5072] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5072] close(3)                    = 0
[pid  5072] mkdir("./file0", 0777)      = 0
[   61.178531][ T5072] loop0: detected capacity change from 0 to 8192
[   61.202743][ T5072] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   61.215754][ T5072] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   61.225034][ T5072] REISERFS (device loop0): using ordered data mode
[   61.231537][ T5072] reiserfs: using flush barriers
[   61.237432][ T5072] 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
[   61.253782][ T5072] REISERFS (device loop0): checking transaction log (loop0)
[   61.261777][ T5072] REISERFS (device loop0): Using r5 hash to sort names
[   61.268684][ T5072] REISERFS (device loop0): using 3.5.x disk format
[pid  5072] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5072] chdir("./file0")            = 0
[pid  5072] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5072] close(4)                    = 0
[pid  5072] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   61.275601][ T5072] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5072] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5072] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5072] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5072] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5072] exit_group(0)               = ?
[pid  5072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./9/binderfs")                  = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./9/file0")                      = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./9")                            = 0
mkdir("./10", 0777)                     = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5074 attached
, child_tidptr=0x55555562f650) = 5074
[pid  5074] set_robust_list(0x55555562f660, 24) = 0
[pid  5074] chdir("./10")               = 0
[pid  5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] setpgid(0, 0)               = 0
[pid  5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5074] write(3, "1000", 4)         = 4
[pid  5074] close(3)                    = 0
[pid  5074] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5074] memfd_create("syzkaller", 0) = 3
[pid  5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5074] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5074] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5074] close(3)                    = 0
[pid  5074] mkdir("./file0", 0777)      = 0
[   61.658224][ T5074] loop0: detected capacity change from 0 to 8192
[   61.672677][ T5074] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   61.685712][ T5074] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   61.695113][ T5074] REISERFS (device loop0): using ordered data mode
[   61.701654][ T5074] reiserfs: using flush barriers
[pid  5074] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5074] chdir("./file0")            = 0
[pid  5074] ioctl(4, LOOP_CLR_FD)       = 0
[   61.707657][ T5074] 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
[   61.723988][ T5074] REISERFS (device loop0): checking transaction log (loop0)
[   61.731964][ T5074] REISERFS (device loop0): Using r5 hash to sort names
[   61.738859][ T5074] REISERFS (device loop0): using 3.5.x disk format
[   61.745632][ T5074] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5074] close(4)                    = 0
[pid  5074] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5074] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5074] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5074] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5074] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5074] exit_group(0)               = ?
[pid  5074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./10/binderfs")                 = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./10/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5076 attached
 <unfinished ...>
[pid  5076] set_robust_list(0x55555562f660, 24) = 0
[pid  5076] chdir("./11" <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5076
[pid  5076] <... chdir resumed>)        = 0
[pid  5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5076] setpgid(0, 0)               = 0
[pid  5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5076] write(3, "1000", 4)         = 4
[pid  5076] close(3)                    = 0
[pid  5076] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5076] memfd_create("syzkaller", 0) = 3
[pid  5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5076] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5076] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5076] close(3)                    = 0
[pid  5076] mkdir("./file0", 0777)      = 0
[   62.216883][ T5076] loop0: detected capacity change from 0 to 8192
[   62.230482][ T5076] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   62.243594][ T5076] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   62.252809][ T5076] REISERFS (device loop0): using ordered data mode
[   62.259407][ T5076] reiserfs: using flush barriers
[pid  5076] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5076] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5076] chdir("./file0")            = 0
[pid  5076] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5076] close(4)                    = 0
[pid  5076] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   62.265337][ T5076] 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
[   62.281765][ T5076] REISERFS (device loop0): checking transaction log (loop0)
[   62.289638][ T5076] REISERFS (device loop0): Using r5 hash to sort names
[   62.296522][ T5076] REISERFS (device loop0): using 3.5.x disk format
[   62.303219][ T5076] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5076] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5076] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5076] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5076] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5076] exit_group(0)               = ?
[pid  5076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=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
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./11/binderfs")                 = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./11/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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 5078 attached
 <unfinished ...>
[pid  5078] set_robust_list(0x55555562f660, 24) = 0
[pid  5078] chdir("./12")               = 0
[pid  5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5078] setpgid(0, 0 <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5078
[pid  5078] <... setpgid resumed>)      = 0
[pid  5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5078] write(3, "1000", 4)         = 4
[pid  5078] close(3)                    = 0
[pid  5078] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5078] memfd_create("syzkaller", 0) = 3
[pid  5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5078] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5078] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5078] close(3)                    = 0
[pid  5078] mkdir("./file0", 0777)      = 0
[   62.759424][ T5078] loop0: detected capacity change from 0 to 8192
[   62.772410][ T5078] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   62.785451][ T5078] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   62.794939][ T5078] REISERFS (device loop0): using ordered data mode
[   62.801427][ T5078] reiserfs: using flush barriers
[pid  5078] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5078] chdir("./file0")            = 0
[pid  5078] ioctl(4, LOOP_CLR_FD)       = 0
[   62.807355][ T5078] 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
[   62.823770][ T5078] REISERFS (device loop0): checking transaction log (loop0)
[   62.831834][ T5078] REISERFS (device loop0): Using r5 hash to sort names
[   62.838875][ T5078] REISERFS (device loop0): using 3.5.x disk format
[   62.845957][ T5078] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5078] close(4)                    = 0
[pid  5078] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5078] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5078] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5078] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5078] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5078] exit_group(0)               = ?
[pid  5078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./12/binderfs")                 = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./12/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5080 attached
 <unfinished ...>
[pid  5080] set_robust_list(0x55555562f660, 24) = 0
[pid  5080] chdir("./13")               = 0
[pid  5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5080] setpgid(0, 0)               = 0
[pid  5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5080
[pid  5080] <... openat resumed>)       = 3
[pid  5080] write(3, "1000", 4)         = 4
[pid  5080] close(3)                    = 0
[pid  5080] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5080] memfd_create("syzkaller", 0) = 3
[pid  5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5080] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5080] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5080] close(3)                    = 0
[pid  5080] mkdir("./file0", 0777)      = 0
[   63.283630][ T5080] loop0: detected capacity change from 0 to 8192
[   63.303119][ T5080] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   63.316190][ T5080] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   63.325510][ T5080] REISERFS (device loop0): using ordered data mode
[   63.332011][ T5080] reiserfs: using flush barriers
[   63.337924][ T5080] 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
[   63.354259][ T5080] REISERFS (device loop0): checking transaction log (loop0)
[   63.362212][ T5080] REISERFS (device loop0): Using r5 hash to sort names
[   63.369101][ T5080] REISERFS (device loop0): using 3.5.x disk format
[pid  5080] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5080] chdir("./file0")            = 0
[pid  5080] ioctl(4, LOOP_CLR_FD)       = 0
[   63.375853][ T5080] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5080] close(4)                    = 0
[pid  5080] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5080] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5080] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5080] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5080] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5080] exit_group(0)               = ?
[pid  5080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} ---
umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./13/binderfs")                 = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./13/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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 5082 attached
, child_tidptr=0x55555562f650) = 5082
[pid  5082] set_robust_list(0x55555562f660, 24) = 0
[pid  5082] chdir("./14")               = 0
[pid  5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5082] setpgid(0, 0)               = 0
[pid  5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5082] write(3, "1000", 4)         = 4
[pid  5082] close(3)                    = 0
[pid  5082] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5082] memfd_create("syzkaller", 0) = 3
[pid  5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5082] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5082] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5082] close(3)                    = 0
[pid  5082] mkdir("./file0", 0777)      = 0
[   63.816537][ T5082] loop0: detected capacity change from 0 to 8192
[   63.825695][ T5082] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   63.838764][ T5082] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   63.848062][ T5082] REISERFS (device loop0): using ordered data mode
[   63.854884][ T5082] reiserfs: using flush barriers
[pid  5082] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5082] chdir("./file0")            = 0
[pid  5082] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5082] close(4)                    = 0
[pid  5082] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   63.860656][ T5082] 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
[   63.877209][ T5082] REISERFS (device loop0): checking transaction log (loop0)
[   63.885344][ T5082] REISERFS (device loop0): Using r5 hash to sort names
[   63.892209][ T5082] REISERFS (device loop0): using 3.5.x disk format
[   63.899145][ T5082] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5082] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5082] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5082] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5082] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5082] exit_group(0)               = ?
[pid  5082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./14/binderfs")                 = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./14/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./14")                           = 0
mkdir("./15", 0777)                     = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5084 attached
 <unfinished ...>
[pid  5084] set_robust_list(0x55555562f660, 24) = 0
[pid  5084] chdir("./15")               = 0
[pid  5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5084] setpgid(0, 0)               = 0
[pid  5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5084
[pid  5084] <... openat resumed>)       = 3
[pid  5084] write(3, "1000", 4)         = 4
[pid  5084] close(3)                    = 0
[pid  5084] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5084] memfd_create("syzkaller", 0) = 3
[pid  5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5084] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5084] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5084] close(3)                    = 0
[pid  5084] mkdir("./file0", 0777)      = 0
[   64.341625][ T5084] loop0: detected capacity change from 0 to 8192
[   64.365675][ T5084] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   64.378653][ T5084] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   64.387841][ T5084] REISERFS (device loop0): using ordered data mode
[   64.394344][ T5084] reiserfs: using flush barriers
[   64.400126][ T5084] 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
[   64.416634][ T5084] REISERFS (device loop0): checking transaction log (loop0)
[   64.424653][ T5084] REISERFS (device loop0): Using r5 hash to sort names
[   64.431508][ T5084] REISERFS (device loop0): using 3.5.x disk format
[pid  5084] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5084] chdir("./file0")            = 0
[pid  5084] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5084] close(4)                    = 0
[pid  5084] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   64.438415][ T5084] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5084] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5084] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5084] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5084] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5084] exit_group(0)               = ?
[pid  5084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./15/binderfs")                 = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./15/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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 5086 attached
, child_tidptr=0x55555562f650) = 5086
[pid  5086] set_robust_list(0x55555562f660, 24) = 0
[pid  5086] chdir("./16")               = 0
[pid  5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5086] setpgid(0, 0)               = 0
[pid  5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "1000", 4)         = 4
[pid  5086] close(3)                    = 0
[pid  5086] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5086] memfd_create("syzkaller", 0) = 3
[pid  5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5086] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5086] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5086] close(3)                    = 0
[pid  5086] mkdir("./file0", 0777)      = 0
[   64.823832][ T5086] loop0: detected capacity change from 0 to 8192
[   64.847620][ T5086] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   64.860636][ T5086] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   64.869911][ T5086] REISERFS (device loop0): using ordered data mode
[   64.876456][ T5086] reiserfs: using flush barriers
[   64.882583][ T5086] 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
[   64.899063][ T5086] REISERFS (device loop0): checking transaction log (loop0)
[   64.907133][ T5086] REISERFS (device loop0): Using r5 hash to sort names
[   64.914046][ T5086] REISERFS (device loop0): using 3.5.x disk format
[pid  5086] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5086] chdir("./file0")            = 0
[pid  5086] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5086] close(4)                    = 0
[pid  5086] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   64.920775][ T5086] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5086] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5086] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5086] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5086] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5086] exit_group(0)               = ?
[pid  5086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./16/binderfs")                 = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./16/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5088
./strace-static-x86_64: Process 5088 attached
[pid  5088] set_robust_list(0x55555562f660, 24) = 0
[pid  5088] chdir("./17")               = 0
[pid  5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5088] setpgid(0, 0)               = 0
[pid  5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5088] write(3, "1000", 4)         = 4
[pid  5088] close(3)                    = 0
[pid  5088] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5088] memfd_create("syzkaller", 0) = 3
[pid  5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5088] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5088] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5088] close(3)                    = 0
[pid  5088] mkdir("./file0", 0777)      = 0
[   65.338299][ T5088] loop0: detected capacity change from 0 to 8192
[   65.352458][ T5088] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   65.365594][ T5088] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   65.374816][ T5088] REISERFS (device loop0): using ordered data mode
[   65.381304][ T5088] reiserfs: using flush barriers
[pid  5088] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5088] chdir("./file0")            = 0
[   65.387207][ T5088] 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
[   65.403677][ T5088] REISERFS (device loop0): checking transaction log (loop0)
[   65.411758][ T5088] REISERFS (device loop0): Using r5 hash to sort names
[   65.418804][ T5088] REISERFS (device loop0): using 3.5.x disk format
[   65.425689][ T5088] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5088] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5088] close(4)                    = 0
[pid  5088] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5088] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5088] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5088] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5088] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5088] exit_group(0)               = ?
[pid  5088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./17/binderfs")                 = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./17/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5090 attached
, child_tidptr=0x55555562f650) = 5090
[pid  5090] set_robust_list(0x55555562f660, 24) = 0
[pid  5090] chdir("./18")               = 0
[pid  5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5090] setpgid(0, 0)               = 0
[pid  5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5090] write(3, "1000", 4)         = 4
[pid  5090] close(3)                    = 0
[pid  5090] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5090] memfd_create("syzkaller", 0) = 3
[pid  5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5090] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5090] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5090] close(3)                    = 0
[pid  5090] mkdir("./file0", 0777)      = 0
[   65.916665][ T5090] loop0: detected capacity change from 0 to 8192
[   65.930664][ T5090] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   65.943659][ T5090] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   65.952832][ T5090] REISERFS (device loop0): using ordered data mode
[   65.959372][ T5090] reiserfs: using flush barriers
[pid  5090] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5090] chdir("./file0")            = 0
[pid  5090] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5090] close(4)                    = 0
[   65.965156][ T5090] 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
[   65.981662][ T5090] REISERFS (device loop0): checking transaction log (loop0)
[   65.990050][ T5090] REISERFS (device loop0): Using r5 hash to sort names
[   65.997144][ T5090] REISERFS (device loop0): using 3.5.x disk format
[   66.004005][ T5090] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5090] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5090] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5090] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5090] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5090] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5090] exit_group(0)               = ?
[pid  5090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} ---
umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./18/binderfs")                 = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./18/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5092 attached
 <unfinished ...>
[pid  5092] set_robust_list(0x55555562f660, 24) = 0
[pid  5092] chdir("./19")               = 0
[pid  5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5092] setpgid(0, 0)               = 0
[pid  5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5092
[pid  5092] <... openat resumed>)       = 3
[pid  5092] write(3, "1000", 4)         = 4
[pid  5092] close(3)                    = 0
[pid  5092] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5092] memfd_create("syzkaller", 0) = 3
[pid  5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5092] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5092] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5092] close(3)                    = 0
[pid  5092] mkdir("./file0", 0777)      = 0
[   66.450388][ T5092] loop0: detected capacity change from 0 to 8192
[   66.464749][ T5092] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   66.477733][ T5092] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   66.487065][ T5092] REISERFS (device loop0): using ordered data mode
[   66.493586][ T5092] reiserfs: using flush barriers
[pid  5092] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5092] chdir("./file0")            = 0
[pid  5092] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5092] close(4)                    = 0
[pid  5092] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   66.499330][ T5092] 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
[   66.515736][ T5092] REISERFS (device loop0): checking transaction log (loop0)
[   66.523906][ T5092] REISERFS (device loop0): Using r5 hash to sort names
[   66.530766][ T5092] REISERFS (device loop0): using 3.5.x disk format
[   66.537600][ T5092] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5092] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5092] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5092] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5092] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5092] exit_group(0)               = ?
[pid  5092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=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
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19/binderfs")                 = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./19/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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=0x55555562f650) = 5094
./strace-static-x86_64: Process 5094 attached
[pid  5094] set_robust_list(0x55555562f660, 24) = 0
[pid  5094] chdir("./20")               = 0
[pid  5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5094] setpgid(0, 0)               = 0
[pid  5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5094] write(3, "1000", 4)         = 4
[pid  5094] close(3)                    = 0
[pid  5094] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5094] memfd_create("syzkaller", 0) = 3
[pid  5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5094] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5094] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5094] close(3)                    = 0
[pid  5094] mkdir("./file0", 0777)      = 0
[   66.897736][ T5094] loop0: detected capacity change from 0 to 8192
[   66.916665][ T5094] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   66.929786][ T5094] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   66.939062][ T5094] REISERFS (device loop0): using ordered data mode
[   66.945585][ T5094] reiserfs: using flush barriers
[   66.951266][ T5094] 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
[   66.967744][ T5094] REISERFS (device loop0): checking transaction log (loop0)
[   66.975582][ T5094] REISERFS (device loop0): Using r5 hash to sort names
[   66.982425][ T5094] REISERFS (device loop0): using 3.5.x disk format
[   66.989375][ T5094] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5094] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5094] chdir("./file0")            = 0
[pid  5094] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5094] close(4)                    = 0
[pid  5094] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[pid  5094] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5094] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5094] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5094] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5094] exit_group(0)               = ?
[pid  5094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20/binderfs")                 = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./20/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 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./strace-static-x86_64: Process 5096 attached
 <unfinished ...>
[pid  5096] set_robust_list(0x55555562f660, 24) = 0
[pid  5096] chdir("./21")               = 0
[pid  5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5096] setpgid(0, 0 <unfinished ...>
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5096
[pid  5096] <... setpgid resumed>)      = 0
[pid  5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5096] write(3, "1000", 4)         = 4
[pid  5096] close(3)                    = 0
[pid  5096] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5096] memfd_create("syzkaller", 0) = 3
[pid  5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5096] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5096] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5096] close(3)                    = 0
[pid  5096] mkdir("./file0", 0777)      = 0
[   67.493396][ T5096] loop0: detected capacity change from 0 to 8192
[   67.502334][ T5096] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   67.515352][ T5096] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   67.524560][ T5096] REISERFS (device loop0): using ordered data mode
[   67.531067][ T5096] reiserfs: using flush barriers
[pid  5096] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5096] chdir("./file0")            = 0
[pid  5096] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5096] close(4)                    = 0
[pid  5096] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   67.536942][ T5096] 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
[   67.553287][ T5096] REISERFS (device loop0): checking transaction log (loop0)
[   67.561454][ T5096] REISERFS (device loop0): Using r5 hash to sort names
[   67.568372][ T5096] REISERFS (device loop0): using 3.5.x disk format
[   67.575309][ T5096] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5096] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5096] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5096] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5096] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5096] exit_group(0)               = ?
[pid  5096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21/binderfs")                 = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./21/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21")                           = 0
mkdir("./22", 0777)                     = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5098 attached
 <unfinished ...>
[pid  5098] set_robust_list(0x55555562f660, 24) = 0
[pid  5098] chdir("./22")               = 0
[pid  5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5098] setpgid(0, 0)               = 0
[pid  5051] <... clone resumed>, child_tidptr=0x55555562f650) = 5098
[pid  5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5098] write(3, "1000", 4)         = 4
[pid  5098] close(3)                    = 0
[pid  5098] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5098] memfd_create("syzkaller", 0) = 3
[pid  5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8b82ec3000
[pid  5098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304
[pid  5098] munmap(0x7f8b82ec3000, 138412032) = 0
[pid  5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5098] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5098] close(3)                    = 0
[pid  5098] mkdir("./file0", 0777)      = 0
[   67.967932][ T5098] loop0: detected capacity change from 0 to 8192
[   67.982108][ T5098] REISERFS warning:  read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[   67.995144][ T5098] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   68.004407][ T5098] REISERFS (device loop0): using ordered data mode
[   68.010913][ T5098] reiserfs: using flush barriers
[pid  5098] mount("/dev/loop0", "./file0", "reiserfs", 0, "") = 0
[pid  5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5098] chdir("./file0")            = 0
[pid  5098] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5098] close(4)                    = 0
[pid  5098] openat(AT_FDCWD, "blkio.bfq.io_wait_time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4
[   68.016964][ T5098] 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
[   68.033289][ T5098] REISERFS (device loop0): checking transaction log (loop0)
[   68.041657][ T5098] REISERFS (device loop0): Using r5 hash to sort names
[   68.048573][ T5098] REISERFS (device loop0): using 3.5.x disk format
[   68.055403][ T5098] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[pid  5098] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1970176
[pid  5098] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000
[pid  5098] openat(AT_FDCWD, 0x20000040, O_RDONLY) = 5
[pid  5098] ioctl(5, FS_IOC_GETVERSION, 0) = -1 EFAULT (Bad address)
[pid  5098] exit_group(0)               = ?
[pid  5098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} ---
umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555556306f0 /* 4 entries */, 32768) = 112
umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./22/binderfs")                 = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 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
newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x555555638730 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555638730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./22/file0")                     = 0
getdents64(3, 0x5555556306f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./22")                           = 0
mkdir("./23", 0777)                     = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5100 attached
, child_tidptr=0x55555562f650) = 5100