./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1891277988

<...>
Warning: Permanently added '10.128.1.64' (ED25519) to the list of known hosts.
execve("./syz-executor1891277988", ["./syz-executor1891277988"], 0x7fff6132abb0 /* 10 vars */) = 0
brk(NULL)                               = 0x555556324000
brk(0x555556324d00)                     = 0x555556324d00
arch_prctl(ARCH_SET_FS, 0x555556324380) = 0
set_tid_address(0x555556324650)         = 5030
set_robust_list(0x555556324660, 24)     = 0
rseq(0x555556324ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1891277988", 4096) = 28
getrandom("\x7c\x2f\xf0\xc3\xee\xe7\x7d\xb7", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555556324d00
brk(0x555556345d00)                     = 0x555556345d00
brk(0x555556346000)                     = 0x555556346000
mprotect(0x7fe44fc1a000, 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.WIaPnD", 0700)       = 0
chmod("./syzkaller.WIaPnD", 0777)       = 0
chdir("./syzkaller.WIaPnD")             = 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 5031 attached
, child_tidptr=0x555556324650) = 5031
[pid  5031] set_robust_list(0x555556324660, 24) = 0
[pid  5031] chdir("./0")                = 0
[pid  5031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5031] setpgid(0, 0)               = 0
[pid  5031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5031] write(3, "1000", 4)         = 4
[pid  5031] close(3)                    = 0
[pid  5031] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5031] memfd_create("syzkaller", 0) = 3
[pid  5031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
syzkaller login: [   65.549852][ T5031] syz-executor189[5031]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
[pid  5031] 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"..., 16777216) = 16777216
[pid  5031] munmap(0x7fe447755000, 16777216) = 0
[pid  5031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5031] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5031] close(3)                    = 0
[pid  5031] mkdir("./file0", 0777)      = 0
[   65.799845][ T5031] loop0: detected capacity change from 0 to 32768
[   65.814381][ T5031] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   65.826636][ T5031] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   65.845147][ T5031] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   65.857564][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   65.865973][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5031] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5031] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5031] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5031] close(4)                    = 0
[pid  5031] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5031] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5031] exit_group(0)               = ?
[pid  5031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5031, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=26 /* 0.26 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   65.908505][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 42ms
[   65.917950][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   65.924120][ T5031] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./0/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./0")                            = 0
mkdir("./1", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556324650) = 5034
./strace-static-x86_64: Process 5034 attached
[pid  5034] set_robust_list(0x555556324660, 24) = 0
[pid  5034] chdir("./1")                = 0
[pid  5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5034] setpgid(0, 0)               = 0
[pid  5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5034] write(3, "1000", 4)         = 4
[pid  5034] close(3)                    = 0
[pid  5034] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5034] memfd_create("syzkaller", 0) = 3
[pid  5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5034] munmap(0x7fe447755000, 16777216) = 0
[pid  5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5034] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5034] close(3)                    = 0
[pid  5034] mkdir("./file0", 0777)      = 0
[   66.335798][ T5034] loop0: detected capacity change from 0 to 32768
[   66.348238][ T5034] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   66.358043][ T5034] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   66.369676][ T5034] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   66.380021][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   66.387775][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5034] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5034] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5034] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5034] close(4)                    = 0
[pid  5034] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5034] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5034] exit_group(0)               = ?
[pid  5034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5034, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   66.429607][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   66.438537][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   66.444505][ T5034] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./1/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 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 5036 attached
, child_tidptr=0x555556324650) = 5036
[pid  5036] set_robust_list(0x555556324660, 24) = 0
[pid  5036] chdir("./2")                = 0
[pid  5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5036] setpgid(0, 0)               = 0
[pid  5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5036] write(3, "1000", 4)         = 4
[pid  5036] close(3)                    = 0
[pid  5036] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5036] memfd_create("syzkaller", 0) = 3
[pid  5036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5036] munmap(0x7fe447755000, 16777216) = 0
[pid  5036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5036] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5036] close(3)                    = 0
[pid  5036] mkdir("./file0", 0777)      = 0
[   66.850619][ T5036] loop0: detected capacity change from 0 to 32768
[   66.861980][ T5036] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   66.872027][ T5036] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   66.883508][ T5036] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   66.893316][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   66.901069][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5036] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5036] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5036] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5036] close(4)                    = 0
[pid  5036] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5036] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5036] exit_group(0)               = ?
[pid  5036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=23 /* 0.23 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, 0x5555563256f0 /* 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
[   66.941685][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 40ms
[   66.950014][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   66.955965][ T5036] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./2/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 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=0x555556324650) = 5038
./strace-static-x86_64: Process 5038 attached
[pid  5038] set_robust_list(0x555556324660, 24) = 0
[pid  5038] chdir("./3")                = 0
[pid  5038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5038] setpgid(0, 0)               = 0
[pid  5038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5038] write(3, "1000", 4)         = 4
[pid  5038] close(3)                    = 0
[pid  5038] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5038] memfd_create("syzkaller", 0) = 3
[pid  5038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5038] munmap(0x7fe447755000, 16777216) = 0
[pid  5038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5038] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5038] close(3)                    = 0
[pid  5038] mkdir("./file0", 0777)      = 0
[   67.351454][ T5038] loop0: detected capacity change from 0 to 32768
[   67.363959][ T5038] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   67.374018][ T5038] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   67.388545][ T5038] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   67.398452][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   67.405938][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5038] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5038] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5038] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5038] close(4)                    = 0
[pid  5038] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5038] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5038] exit_group(0)               = ?
[pid  5038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5038, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=24 /* 0.24 s */} ---
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, 0x5555563256f0 /* 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
[   67.448503][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 42ms
[   67.457850][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   67.464184][ T5038] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./3/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./3")                            = 0
mkdir("./4", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556324650) = 5041
./strace-static-x86_64: Process 5041 attached
[pid  5041] set_robust_list(0x555556324660, 24) = 0
[pid  5041] chdir("./4")                = 0
[pid  5041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5041] setpgid(0, 0)               = 0
[pid  5041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5041] write(3, "1000", 4)         = 4
[pid  5041] close(3)                    = 0
[pid  5041] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5041] memfd_create("syzkaller", 0) = 3
[pid  5041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5041] 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"..., 16777216) = 16777216
[pid  5041] munmap(0x7fe447755000, 16777216) = 0
[pid  5041] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5041] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5041] close(3)                    = 0
[pid  5041] mkdir("./file0", 0777)      = 0
[   67.855189][ T5041] loop0: detected capacity change from 0 to 32768
[   67.867505][ T5041] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   67.877559][ T5041] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   67.889390][ T5041] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   67.900392][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   67.908148][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5041] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5041] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5041] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5041] close(4)                    = 0
[pid  5041] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5041] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5041] exit_group(0)               = ?
[pid  5041] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5041, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=24 /* 0.24 s */} ---
umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   67.949798][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   67.958247][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   67.964605][ T5041] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./4/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./4")                            = 0
mkdir("./5", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5043 attached
, child_tidptr=0x555556324650) = 5043
[pid  5043] set_robust_list(0x555556324660, 24) = 0
[pid  5043] chdir("./5")                = 0
[pid  5043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5043] setpgid(0, 0)               = 0
[pid  5043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5043] write(3, "1000", 4)         = 4
[pid  5043] close(3)                    = 0
[pid  5043] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5043] memfd_create("syzkaller", 0) = 3
[pid  5043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5043] 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"..., 16777216) = 16777216
[pid  5043] munmap(0x7fe447755000, 16777216) = 0
[pid  5043] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5043] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5043] close(3)                    = 0
[pid  5043] mkdir("./file0", 0777)      = 0
[   68.362611][ T5043] loop0: detected capacity change from 0 to 32768
[   68.375869][ T5043] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   68.386030][ T5043] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   68.398167][ T5043] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   68.408427][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   68.416254][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5043] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5043] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5043] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5043] close(4)                    = 0
[pid  5043] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5043] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5043] exit_group(0)               = ?
[pid  5043] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5043, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 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, 0x5555563256f0 /* 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
[   68.458225][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   68.469439][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   68.475910][ T5043] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./5/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./5")                            = 0
mkdir("./6", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5046 attached
, child_tidptr=0x555556324650) = 5046
[pid  5046] set_robust_list(0x555556324660, 24) = 0
[pid  5046] chdir("./6")                = 0
[pid  5046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5046] setpgid(0, 0)               = 0
[pid  5046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5046] write(3, "1000", 4)         = 4
[pid  5046] close(3)                    = 0
[pid  5046] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5046] memfd_create("syzkaller", 0) = 3
[pid  5046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5046] munmap(0x7fe447755000, 16777216) = 0
[pid  5046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5046] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5046] close(3)                    = 0
[pid  5046] mkdir("./file0", 0777)      = 0
[   68.881658][ T5046] loop0: detected capacity change from 0 to 32768
[   68.892601][ T5046] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   68.903382][ T5046] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   68.913945][ T5046] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   68.923640][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   68.931445][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5046] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5046] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5046] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5046] close(4)                    = 0
[pid  5046] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5046] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5046] exit_group(0)               = ?
[pid  5046] +++ exited with 0 +++
[   68.972624][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   68.983181][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   68.989575][ T5046] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5046, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./6/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./6")                            = 0
mkdir("./7", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556324650) = 5048
./strace-static-x86_64: Process 5048 attached
[pid  5048] set_robust_list(0x555556324660, 24) = 0
[pid  5048] chdir("./7")                = 0
[pid  5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5048] setpgid(0, 0)               = 0
[pid  5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5048] write(3, "1000", 4)         = 4
[pid  5048] close(3)                    = 0
[pid  5048] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5048] memfd_create("syzkaller", 0) = 3
[pid  5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5048] munmap(0x7fe447755000, 16777216) = 0
[pid  5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5048] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5048] close(3)                    = 0
[pid  5048] mkdir("./file0", 0777)      = 0
[   69.407258][ T5048] loop0: detected capacity change from 0 to 32768
[   69.421648][ T5048] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   69.431976][ T5048] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   69.444781][ T5048] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   69.455079][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   69.463609][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5048] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5048] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5048] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5048] close(4)                    = 0
[pid  5048] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5048] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5048] exit_group(0)               = ?
[pid  5048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 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, 0x5555563256f0 /* 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
[   69.505171][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   69.515646][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   69.522403][ T5048] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./7/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./7")                            = 0
mkdir("./8", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556324650) = 5050
./strace-static-x86_64: Process 5050 attached
[pid  5050] set_robust_list(0x555556324660, 24) = 0
[pid  5050] chdir("./8")                = 0
[pid  5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5050] setpgid(0, 0)               = 0
[pid  5050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5050] write(3, "1000", 4)         = 4
[pid  5050] close(3)                    = 0
[pid  5050] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5050] memfd_create("syzkaller", 0) = 3
[pid  5050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[pid  5050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5050] munmap(0x7fe447755000, 16777216) = 0
[pid  5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5050] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5050] close(3)                    = 0
[pid  5050] mkdir("./file0", 0777)      = 0
[   69.929376][ T5050] loop0: detected capacity change from 0 to 32768
[   69.942363][ T5050] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   69.954737][ T5050] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   69.967561][ T5050] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   69.977336][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   69.984842][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5050] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5050] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5050] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5050] close(4)                    = 0
[pid  5050] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5050] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[pid  5050] exit_group(0)               = ?
[pid  5050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5050, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} ---
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   70.024957][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 40ms
[   70.035597][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   70.042554][ T5050] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./8/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./8")                            = 0
mkdir("./9", 0777)                      = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5052 attached
 <unfinished ...>
[pid  5052] set_robust_list(0x555556324660, 24) = 0
[pid  5052] chdir("./9")                = 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  5030] <... clone resumed>, child_tidptr=0x555556324650) = 5052
[pid  5052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe447755000
[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"..., 16777216) = 16777216
[pid  5052] munmap(0x7fe447755000, 16777216) = 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
[   70.457961][ T5052] loop0: detected capacity change from 0 to 32768
[   70.476620][ T5052] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   70.486437][ T5052] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   70.498381][ T5052] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   70.508661][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   70.516134][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5052] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5052] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5052] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5052] close(4)                    = 0
[pid  5052] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5052] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[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=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   70.558021][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 41ms
[   70.567759][   T23] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   70.573846][ T5052] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
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, 0x55555632d730 /* 2 entries */, 32768) = 48
getdents64(4, 0x55555632d730 /* 0 entries */, 32768) = 0
close(4)                                = 0
rmdir("./9/file0")                      = 0
getdents64(3, 0x5555563256f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./9")                            = 0
mkdir("./10", 0777)                     = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556324650) = 5055
./strace-static-x86_64: Process 5055 attached
[pid  5055] set_robust_list(0x555556324660, 24) = 0
[pid  5055] chdir("./10")               = 0
[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) = 0x7fe447755000
[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"..., 16777216) = 16777216
[pid  5055] munmap(0x7fe447755000, 16777216) = 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
[   70.975693][ T5055] loop0: detected capacity change from 0 to 32768
[   70.987190][ T5055] gfs2: fsid=„½%b­i’~N-SS“: Trying to join cluster "lock_nolock", "„½%b­i’~N-SS“"
[   70.996773][ T5055] gfs2: fsid=„½%b­i’~N-SS“: Now mounting FS (format 1801)...
[   71.008496][ T5055] gfs2: fsid=„½%b­i’~N-SS“.0: journal 0 mapped with 18 extents in 0ms
[   71.018695][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0, already locked for use
[   71.026188][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Looking at journal...
[pid  5055] mount("/dev/loop0", "./file0", "gfs2", MS_RDONLY|MS_NODEV|MS_SYNCHRONOUS|MS_NODIRATIME, "\x64\x61\x74\x61\x3d\x77\x72\x69\x74\x65\x62\x61\x63\x6b\x2c\x61\x63\x6c\x2c\x71\x75\x6f\x74\x61\x3d\x6f\x6e\x2c\x6c\x6f\x63\x61\x6c\x63\x61\x63\x68\x69\x6e\x67\x2c\x6c\x6f\x63\x6b\x74\x61\x62\x6c\x65\x3d\x84\xbd\x25\x62\xad\x69\x92\x7e\x4e\x2d\x53\x53\xc2\x13\x93\x2c\x71\x75\x6f\x74\x61\x2c") = 0
[pid  5055] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5055] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5055] close(4)                    = 0
[pid  5055] quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=0, dqb_curspace=4096, dqb_ihardlimit=0, dqb_isoftlimit=0, dqb_curinodes=0, ...}) = 0
[pid  5055] open("./file0", O_RDONLY|O_NONBLOCK) = 4
[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=4 /* 0.04 s */, si_stime=24 /* 0.24 s */} ---
umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555563256f0 /* 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
[   71.074691][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Journal head lookup took 48ms
[   71.084544][  T779] gfs2: fsid=„½%b­i’~N-SS“.0: jid=0: Done
[   71.091452][ T5055] gfs2: fsid=„½%b­i’~N-SS“.0: first mount done, others may mount
[   71.167408][    C0] ==================================================================
[   71.175666][    C0] BUG: KASAN: slab-use-after-free in gfs2_qd_dealloc+0x83/0xf0
[   71.183276][    C0] Write of size 4 at addr ffff888025754a78 by task ksoftirqd/0/16
[   71.191194][    C0] 
[   71.193554][    C0] CPU: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.6.0-rc3-syzkaller #0
[   71.201980][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
[   71.212407][    C0] Call Trace:
[   71.215709][    C0]  <TASK>
[   71.218653][    C0]  dump_stack_lvl+0x1e7/0x2d0
[   71.223352][    C0]  ? nf_tcp_handle_invalid+0x650/0x650
[   71.229003][    C0]  ? panic+0x770/0x770
[   71.233095][    C0]  ? _printk+0xd5/0x120
[   71.237276][    C0]  print_report+0x163/0x540
[   71.241805][    C0]  ? print_irqtrace_events+0x220/0x220
[   71.247279][    C0]  ? __virt_addr_valid+0x22f/0x2e0
[   71.252409][    C0]  ? __phys_addr+0xba/0x170
[   71.257029][    C0]  ? gfs2_qd_dealloc+0x83/0xf0
[   71.261824][    C0]  kasan_report+0x175/0x1b0
[   71.266356][    C0]  ? gfs2_qd_dealloc+0x83/0xf0
[   71.271167][    C0]  kasan_check_range+0x27e/0x290
[   71.276124][    C0]  gfs2_qd_dealloc+0x83/0xf0
[   71.280742][    C0]  ? gfs2_qd_dispose+0x5b0/0x5b0
[   71.285755][    C0]  ? rcu_core+0xa61/0x1790
[   71.290212][    C0]  rcu_core+0xacf/0x1790
[   71.294484][    C0]  ? rcu_cpu_kthread_park+0x90/0x90
[   71.299776][    C0]  ? rcu_qs+0xf1/0x190
[   71.303934][    C0]  ? rcu_softirq_qs+0x2f0/0x2f0
[   71.308803][    C0]  ? sched_clock+0x4a/0x60
[   71.313914][    C0]  ? sched_clock_cpu+0x76/0x490
[   71.318771][    C0]  ? lockdep_hardirqs_on_prepare+0x43c/0x7a0
[   71.324743][    C0]  ? print_irqtrace_events+0x220/0x220
[   71.330299][    C0]  __do_softirq+0x2ab/0x908
[   71.335591][    C0]  ? run_ksoftirqd+0xc5/0x120
[   71.340272][    C0]  ? __lock_text_end+0xc/0xc
[   71.344865][    C0]  run_ksoftirqd+0xc5/0x120
[   71.349371][    C0]  ? ksoftirqd_should_run+0x20/0x20
[   71.354579][    C0]  ? ksoftirqd_should_run+0x20/0x20
[   71.359864][    C0]  smpboot_thread_fn+0x530/0x9f0
[   71.365109][    C0]  ? smpboot_thread_fn+0x4e/0x9f0
[   71.370244][    C0]  kthread+0x2d3/0x370
[   71.374407][    C0]  ? smpboot_unregister_percpu_thread+0x130/0x130
[   71.380827][    C0]  ? kthread_blkcg+0xd0/0xd0
[   71.385419][    C0]  ret_from_fork+0x48/0x80
[   71.389832][    C0]  ? kthread_blkcg+0xd0/0xd0
[   71.394421][    C0]  ret_from_fork_asm+0x11/0x20
[   71.399187][    C0]  </TASK>
[   71.402202][    C0] 
[   71.404513][    C0] Allocated by task 5055:
[   71.408876][    C0]  kasan_set_track+0x4f/0x70
[   71.414006][    C0]  __kasan_kmalloc+0x98/0xb0
[   71.418589][    C0]  gfs2_fill_super+0x136/0x26c0
[   71.423435][    C0]  get_tree_bdev+0x416/0x5b0
[   71.428051][    C0]  gfs2_get_tree+0x54/0x210
[   71.433282][    C0]  vfs_get_tree+0x8c/0x280
[   71.437709][    C0]  do_new_mount+0x28f/0xae0
[   71.442223][    C0]  __se_sys_mount+0x2d9/0x3c0
[   71.446911][    C0]  do_syscall_64+0x41/0xc0
[   71.451337][    C0]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   71.457246][    C0] 
[   71.459560][    C0] Freed by task 5030:
[   71.463527][    C0]  kasan_set_track+0x4f/0x70
[   71.468114][    C0]  kasan_save_free_info+0x28/0x40
[   71.473227][    C0]  ____kasan_slab_free+0xd6/0x120
[   71.478266][    C0]  __kmem_cache_free+0x25f/0x3b0
[   71.483916][    C0]  generic_shutdown_super+0x13a/0x2c0
[   71.489412][    C0]  kill_block_super+0x41/0x70
[   71.494114][    C0]  deactivate_locked_super+0xa4/0x110
[   71.499629][    C0]  cleanup_mnt+0x426/0x4c0
[   71.504075][    C0]  task_work_run+0x24a/0x300
[   71.508776][    C0]  ptrace_notify+0x2cd/0x380
[   71.513364][    C0]  syscall_exit_to_user_mode+0x15c/0x280
[   71.519131][    C0]  do_syscall_64+0x4d/0xc0
[   71.524578][    C0]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   71.530463][    C0] 
[   71.532776][    C0] The buggy address belongs to the object at ffff888025754000
[   71.532776][    C0]  which belongs to the cache kmalloc-8k of size 8192
[   71.546820][    C0] The buggy address is located 2680 bytes inside of
[   71.546820][    C0]  freed 8192-byte region [ffff888025754000, ffff888025756000)
[   71.561133][    C0] 
[   71.563448][    C0] The buggy address belongs to the physical page:
[   71.569847][    C0] page:ffffea000095d400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x25750
[   71.580007][    C0] head:ffffea000095d400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   71.589236][    C0] flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
[   71.597237][    C0] page_type: 0xffffffff()
[   71.601592][    C0] raw: 00fff00000000840 ffff888012842280 ffffea0000952e00 0000000000000002
[   71.610286][    C0] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000
[   71.619598][    C0] page dumped because: kasan: bad access detected
[   71.626097][    C0] page_owner tracks the page as allocated
[   71.631825][    C0] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4714, tgid 4714 (dhcpcd-run-hook), ts 36549622906, free_ts 36548101490
[   71.652752][    C0]  post_alloc_hook+0x1e6/0x210
[   71.657520][    C0]  get_page_from_freelist+0x31db/0x3360
[   71.663077][    C0]  __alloc_pages+0x255/0x670
[   71.667664][    C0]  alloc_slab_page+0x6a/0x160
[   71.672334][    C0]  new_slab+0x84/0x2f0
[   71.676397][    C0]  ___slab_alloc+0xc85/0x1310
[   71.681345][    C0]  __kmem_cache_alloc_node+0x1af/0x270
[   71.686936][    C0]  kmalloc_trace+0x2a/0xe0
[   71.691684][    C0]  tomoyo_init_log+0x11cd/0x2040
[   71.696776][    C0]  tomoyo_supervisor+0x386/0x11f0
[   71.702002][    C0]  tomoyo_env_perm+0x178/0x210
[   71.706788][    C0]  tomoyo_find_next_domain+0x1383/0x1cf0
[   71.712431][    C0]  tomoyo_bprm_check_security+0x114/0x170
[   71.718168][    C0]  security_bprm_check+0x63/0xa0
[   71.723111][    C0]  bprm_execve+0x8c7/0x17c0
[   71.727783][    C0]  do_execveat_common+0x580/0x720
[   71.732796][    C0] page last free stack trace:
[   71.737559][    C0]  free_unref_page_prepare+0x8c3/0x9f0
[   71.743018][    C0]  free_unref_page+0x37/0x3f0
[   71.748130][    C0]  __unfreeze_partials+0x1dc/0x220
[   71.753243][    C0]  put_cpu_partial+0x17b/0x250
[   71.758084][    C0]  __slab_free+0x2b6/0x390
[   71.762489][    C0]  qlist_free_all+0x75/0xe0
[   71.767111][    C0]  kasan_quarantine_reduce+0x14b/0x160
[   71.772564][    C0]  __kasan_slab_alloc+0x23/0x70
[   71.777507][    C0]  slab_post_alloc_hook+0x67/0x3d0
[   71.782871][    C0]  __kmem_cache_alloc_node+0x141/0x270
[   71.788318][    C0]  __kmalloc+0xa8/0x230
[   71.792990][    C0]  tomoyo_supervisor+0xe06/0x11f0
[   71.798280][    C0]  tomoyo_env_perm+0x178/0x210
[   71.803124][    C0]  tomoyo_find_next_domain+0x1383/0x1cf0
[   71.808775][    C0]  tomoyo_bprm_check_security+0x114/0x170
[   71.814496][    C0]  security_bprm_check+0x63/0xa0
[   71.819532][    C0] 
[   71.821844][    C0] Memory state around the buggy address:
[   71.827460][    C0]  ffff888025754900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.835670][    C0]  ffff888025754980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.844328][    C0] >ffff888025754a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.852388][    C0]                                                                 ^
[   71.861920][    C0]  ffff888025754a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.869975][    C0]  ffff888025754b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   71.879088][    C0] ==================================================================
[   71.887282][    C0] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   71.894763][    C0] CPU: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.6.0-rc3-syzkaller #0
[   71.903039][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
[   71.913117][    C0] Call Trace:
[   71.916417][    C0]  <TASK>
[   71.919362][    C0]  dump_stack_lvl+0x1e7/0x2d0
[   71.924172][    C0]  ? nf_tcp_handle_invalid+0x650/0x650
[   71.929674][    C0]  ? panic+0x770/0x770
[   71.933859][    C0]  ? vscnprintf+0x5d/0x80
[   71.938394][    C0]  panic+0x30f/0x770
[   71.942351][    C0]  ? check_panic_on_warn+0x21/0xa0
[   71.947586][    C0]  ? __memcpy_flushcache+0x2b0/0x2b0
[   71.952908][    C0]  ? _raw_spin_unlock_irqrestore+0xd8/0x140
[   71.959025][    C0]  ? _raw_spin_unlock_irqrestore+0xdd/0x140
[   71.965023][    C0]  ? _raw_spin_unlock+0x40/0x40
[   71.969879][    C0]  ? print_report+0x4fb/0x540
[   71.974589][    C0]  check_panic_on_warn+0x82/0xa0
[   71.979643][    C0]  ? gfs2_qd_dealloc+0x83/0xf0
[   71.984424][    C0]  end_report+0x6e/0x130
[   71.988683][    C0]  kasan_report+0x186/0x1b0
[   71.993188][    C0]  ? gfs2_qd_dealloc+0x83/0xf0
[   71.998049][    C0]  kasan_check_range+0x27e/0x290
[   72.002992][    C0]  gfs2_qd_dealloc+0x83/0xf0
[   72.007583][    C0]  ? gfs2_qd_dispose+0x5b0/0x5b0
[   72.012563][    C0]  ? rcu_core+0xa61/0x1790
[   72.016996][    C0]  rcu_core+0xacf/0x1790
[   72.021341][    C0]  ? rcu_cpu_kthread_park+0x90/0x90
[   72.026552][    C0]  ? rcu_qs+0xf1/0x190
[   72.030797][    C0]  ? rcu_softirq_qs+0x2f0/0x2f0
[   72.035660][    C0]  ? sched_clock+0x4a/0x60
[   72.040073][    C0]  ? sched_clock_cpu+0x76/0x490
[   72.044930][    C0]  ? lockdep_hardirqs_on_prepare+0x43c/0x7a0
[   72.051018][    C0]  ? print_irqtrace_events+0x220/0x220
[   72.056475][    C0]  __do_softirq+0x2ab/0x908
[   72.060982][    C0]  ? run_ksoftirqd+0xc5/0x120
[   72.065663][    C0]  ? __lock_text_end+0xc/0xc
[   72.070256][    C0]  run_ksoftirqd+0xc5/0x120
[   72.074778][    C0]  ? ksoftirqd_should_run+0x20/0x20
[   72.080002][    C0]  ? ksoftirqd_should_run+0x20/0x20
[   72.085212][    C0]  smpboot_thread_fn+0x530/0x9f0
[   72.090153][    C0]  ? smpboot_thread_fn+0x4e/0x9f0
[   72.095180][    C0]  kthread+0x2d3/0x370
[   72.099243][    C0]  ? smpboot_unregister_percpu_thread+0x130/0x130
[   72.106091][    C0]  ? kthread_blkcg+0xd0/0xd0
[   72.110681][    C0]  ret_from_fork+0x48/0x80
[   72.115093][    C0]  ? kthread_blkcg+0xd0/0xd0
[   72.119700][    C0]  ret_from_fork_asm+0x11/0x20
[   72.124560][    C0]  </TASK>
[   72.127873][    C0] Kernel Offset: disabled
[   72.132187][    C0] Rebooting in 86400 seconds..