./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor596379262
<...>
Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts.
execve("./syz-executor596379262", ["./syz-executor596379262"], 0x7ffe73a85190 /* 10 vars */) = 0
brk(NULL) = 0x55556c8a8000
brk(0x55556c8a8d00) = 0x55556c8a8d00
arch_prctl(ARCH_SET_FS, 0x55556c8a8380) = 0
set_tid_address(0x55556c8a8650) = 5834
set_robust_list(0x55556c8a8660, 24) = 0
rseq(0x55556c8a8ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor596379262", 4096) = 27
getrandom("\x5f\x9d\xf1\x06\x78\x55\x3e\x8b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556c8a8d00
brk(0x55556c8c9d00) = 0x55556c8c9d00
brk(0x55556c8ca000) = 0x55556c8ca000
mprotect(0x7f9780f41000, 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.S1O8H2", 0700) = 0
chmod("./syzkaller.S1O8H2", 0777) = 0
chdir("./syzkaller.S1O8H2") = 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 5836 attached
, child_tidptr=0x55556c8a8650) = 5836
[pid 5836] set_robust_list(0x55556c8a8660, 24) = 0
[pid 5836] chdir("./0") = 0
[pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5836] setpgid(0, 0) = 0
[pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5836] write(3, "1000", 4) = 4
[pid 5836] close(3) = 0
[pid 5836] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 5836] write(1, "executing program\n", 18) = 18
[pid 5836] memfd_create("syzkaller", 0) = 3
[pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9778a00000
[pid 5836] 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"..., 32768) = 32768
[pid 5836] munmap(0x7f9778a00000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5836] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5836] close(3) = 0
[pid 5836] close(4) = 0
[pid 5836] mkdir("./bus", 0777) = 0
[pid 5836] mount("/dev/loop0", "./bus", "minix", MS_REC, "") = 0
[ 95.514068][ T5836] loop0: detected capacity change from 0 to 64
[pid 5836] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3
[pid 5836] chdir("./bus") = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] truncate("./file2", 524288) = 0
[pid 5836] unlink("./file1") = 0
[pid 5836] creat("./bus", 000) = -1 ENOSPC (No space left on device)
[pid 5836] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5836] mkdirat(AT_FDCWD, "./file1", 000) = 0
[pid 5836] mkdir("./bus", 000) = 0
[ 95.606020][ T5836] Trying to free block not in datazone
[ 95.617250][ T5836] Trying to free block not in datazone
[ 95.624870][ T5836] minix_free_inode: bit 5 already cleared
[pid 5836] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,") = 0
[pid 5836] chdir("./bus") = 0
[pid 5836] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOATIME|O_CLOEXEC, 000) = 4
[ 95.665002][ T5836] overlayfs: upper fs needs to support d_type.
[ 95.676062][ T5836] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 95.685225][ T5836] overlayfs: failed to set xattr on upper
[ 95.692112][ T5836] overlayfs: ...falling back to redirect_dir=nofollow.
[ 95.700419][ T5836] overlayfs: ...falling back to index=off.
[ 95.706460][ T5836] overlayfs: ...falling back to uuid=null.
[pid 5836] exit_group(0) = ?
[pid 5836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} ---
umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 95.732906][ T29] audit: type=1800 audit(1736052915.696:2): pid=5836 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor596" name="bus" dev="overlay" ino=4 res=0 errno=0
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, 0x55556c8a96f0 /* 4 entries */, 32768) = 104
umount2("./0/binderfs", MNT_FORCE|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/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy)
newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0755, st_size=512, ...}, AT_SYMLINK_NOFOLLOW) = 0
umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy)
openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=512, ...}, AT_EMPTY_PATH) = 0
getdents64(4, 0x55556c8b1730 /* 8 entries */, 32768) = 232
umount2("./0/bus/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./0/bus/file0", {st_mode=S_IFDIR|0755, st_size=256, ...}, AT_SYMLINK_NOFOLLOW) = 0
umount2("./0/bus/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0/bus/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5
newfstatat(5, "", {st_mode=S_IFDIR|0755, st_size=256, ...}, AT_EMPTY_PATH) = 0
getdents64(5, 0x55556c8b9770 /* 4 entries */, 32768) = 104
umount2("./0/bus/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./0/bus/file0/file0", {st_mode=S_IFDIR|000, st_size=192, ...}, AT_SYMLINK_NOFOLLOW) = 0
umount2("./0/bus/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0/bus/file0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6
newfstatat(6, "", {st_mode=S_IFDIR|000, st_size=192, ...}, AT_EMPTY_PATH) = 0
getdents64(6, 0x55556c8c17b0 /* 2 entries */, 32768) = 48
getdents64(6, 0x55556c8c17b0 /* 0 entries */, 32768) = 0
close(6) = 0
rmdir("./0/bus/file0/file0") = 0
umount2("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96") = 0
getdents64(5, 0x55556c8b9770 /* 0 entries */, 32768) = 0
close(5) = 0
[ 96.260086][ T5834] ------------[ cut here ]------------
[ 96.266612][ T5834] WARNING: CPU: 0 PID: 5834 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 96.275184][ T5834] Modules linked in:
[ 96.279416][ T5834] CPU: 0 UID: 0 PID: 5834 Comm: syz-executor596 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
[ 96.291753][ T5834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 96.302651][ T5834] RIP: 0010:drop_nlink+0xc4/0x110
[ 96.308296][ T5834] Code: bb 70 07 00 00 be 08 00 00 00 e8 87 15 e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 4d 97 80 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 96.330747][ T5834] RSP: 0018:ffffc9000403fd30 EFLAGS: 00010293
[ 96.337572][ T5834] RAX: ffffffff823e8cd3 RBX: 1ffff1100ec298ba RCX: ffff88802e459e00
[ 96.346061][ T5834] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 96.355352][ T5834] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e
[ 96.364196][ T5834] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff88807614c5d0
[ 96.373984][ T5834] R13: ffff88807eeb9318 R14: ffff88807614c588 R15: dffffc0000000000
[ 96.384090][ T5834] FS: 000055556c8a8380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[ 96.394453][ T5834] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 96.403338][ T5834] CR2: 000055556c8c97b8 CR3: 0000000077d3e000 CR4: 00000000003526f0
[ 96.412793][ T5834] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 96.421146][ T5834] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 96.429761][ T5834] Call Trace:
[ 96.433513][ T5834]
[ 96.437737][ T5834] ? __warn+0x165/0x4d0
[ 96.443153][ T5834] ? drop_nlink+0xc4/0x110
[ 96.448903][ T5834] ? report_bug+0x2b3/0x500
[ 96.454083][ T5834] ? drop_nlink+0xc4/0x110
[ 96.459259][ T5834] ? handle_bug+0x60/0x90
[ 96.464326][ T5834] ? exc_invalid_op+0x1a/0x50
[ 96.470095][ T5834] ? asm_exc_invalid_op+0x1a/0x20
[ 96.477194][ T5834] ? drop_nlink+0x43/0x110
[ 96.482189][ T5834] ? drop_nlink+0xc3/0x110
[ 96.487019][ T5834] ? drop_nlink+0xc4/0x110
[ 96.491883][ T5834] minix_rmdir+0xa5/0xc0
[ 96.497455][ T5834] vfs_rmdir+0x3a3/0x510
[ 96.502164][ T5834] do_rmdir+0x3b5/0x580
[ 96.507178][ T5834] ? __virt_addr_valid+0x183/0x530
[ 96.513229][ T5834] ? __pfx_do_rmdir+0x10/0x10
[ 96.519135][ T5834] ? getname_flags+0x1e3/0x540
[ 96.524335][ T5834] __x64_sys_rmdir+0x47/0x50
[ 96.529247][ T5834] do_syscall_64+0xf3/0x230
[ 96.534912][ T5834] ? clear_bhb_loop+0x35/0x90
[ 96.540351][ T5834] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.547258][ T5834] RIP: 0033:0x7f9780eccd47
[ 96.552478][ T5834] Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 96.574136][ T5834] RSP: 002b:00007fffefea6288 EFLAGS: 00000207 ORIG_RAX: 0000000000000054
[ 96.583963][ T5834] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9780eccd47
[ 96.594345][ T5834] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007fffefea7430
[ 96.603112][ T5834] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000
[ 96.612235][ T5834] R10: 0000000000000100 R11: 0000000000000207 R12: 00007fffefea7430
[ 96.620855][ T5834] R13: 000055556c8b9740 R14: 431bde82d7b634db R15: 00007fffefea95b0
[ 96.629322][ T5834]
[ 96.633556][ T5834] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 96.641904][ T5834] CPU: 0 UID: 0 PID: 5834 Comm: syz-executor596 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
[ 96.654305][ T5834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 96.665651][ T5834] Call Trace:
[ 96.669273][ T5834]
[ 96.672725][ T5834] dump_stack_lvl+0x241/0x360
[ 96.679242][ T5834] ? __pfx_dump_stack_lvl+0x10/0x10
[ 96.685504][ T5834] ? __pfx__printk+0x10/0x10
[ 96.691137][ T5834] ? vscnprintf+0x5d/0x90
[ 96.695995][ T5834] panic+0x349/0x880
[ 96.700570][ T5834] ? __warn+0x174/0x4d0
[ 96.705501][ T5834] ? __pfx_panic+0x10/0x10
[ 96.710250][ T5834] __warn+0x344/0x4d0
[ 96.714823][ T5834] ? drop_nlink+0xc4/0x110
[ 96.719646][ T5834] report_bug+0x2b3/0x500
[ 96.725449][ T5834] ? drop_nlink+0xc4/0x110
[ 96.730362][ T5834] handle_bug+0x60/0x90
[ 96.735230][ T5834] exc_invalid_op+0x1a/0x50
[ 96.740420][ T5834] asm_exc_invalid_op+0x1a/0x20
[ 96.745591][ T5834] RIP: 0010:drop_nlink+0xc4/0x110
[ 96.751437][ T5834] Code: bb 70 07 00 00 be 08 00 00 00 e8 87 15 e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 4d 97 80 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 96.773775][ T5834] RSP: 0018:ffffc9000403fd30 EFLAGS: 00010293
[ 96.780186][ T5834] RAX: ffffffff823e8cd3 RBX: 1ffff1100ec298ba RCX: ffff88802e459e00
[ 96.788566][ T5834] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 96.797976][ T5834] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e
[ 96.806808][ T5834] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff88807614c5d0
[ 96.815628][ T5834] R13: ffff88807eeb9318 R14: ffff88807614c588 R15: dffffc0000000000
[ 96.824435][ T5834] ? drop_nlink+0x43/0x110
[ 96.829352][ T5834] ? drop_nlink+0xc3/0x110
[ 96.834660][ T5834] minix_rmdir+0xa5/0xc0
[ 96.839250][ T5834] vfs_rmdir+0x3a3/0x510
[ 96.844084][ T5834] do_rmdir+0x3b5/0x580
[ 96.848646][ T5834] ? __virt_addr_valid+0x183/0x530
[ 96.855148][ T5834] ? __pfx_do_rmdir+0x10/0x10
[ 96.860375][ T5834] ? getname_flags+0x1e3/0x540
[ 96.865538][ T5834] __x64_sys_rmdir+0x47/0x50
[ 96.870889][ T5834] do_syscall_64+0xf3/0x230
[ 96.876767][ T5834] ? clear_bhb_loop+0x35/0x90
[ 96.881669][ T5834] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 96.888064][ T5834] RIP: 0033:0x7f9780eccd47
[ 96.892801][ T5834] Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[ 96.916026][ T5834] RSP: 002b:00007fffefea6288 EFLAGS: 00000207 ORIG_RAX: 0000000000000054
[ 96.925467][ T5834] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9780eccd47
[ 96.934117][ T5834] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007fffefea7430
[ 96.942741][ T5834] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000
[ 96.951157][ T5834] R10: 0000000000000100 R11: 0000000000000207 R12: 00007fffefea7430
[ 96.959873][ T5834] R13: 000055556c8b9740 R14: 431bde82d7b634db R15: 00007fffefea95b0
[ 96.968131][ T5834]
[ 96.971774][ T5834] Kernel Offset: disabled
[ 96.976754][ T5834] Rebooting in 86400 seconds..