./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3382583593
<...>
Warning: Permanently added '10.128.0.159' (ED25519) to the list of known hosts.
execve("./syz-executor3382583593", ["./syz-executor3382583593"], 0x7ffc58d0b370 /* 10 vars */) = 0
brk(NULL) = 0x55556e49b000
brk(0x55556e49bd00) = 0x55556e49bd00
arch_prctl(ARCH_SET_FS, 0x55556e49b380) = 0
set_tid_address(0x55556e49b650) = 5834
set_robust_list(0x55556e49b660, 24) = 0
rseq(0x55556e49bca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3382583593", 4096) = 28
getrandom("\xd8\x40\x1d\xfa\x1d\x87\x92\x58", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556e49bd00
brk(0x55556e4bcd00) = 0x55556e4bcd00
brk(0x55556e4bd000) = 0x55556e4bd000
mprotect(0x7f6beb6ec000, 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
write(1, "executing program\n", 18executing program
) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6be3200000
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"..., 1048576) = 1048576
munmap(0x7f6be3200000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file0", 0777) = 0
mount("/dev/loop0", "./file0", "udf", MS_DIRSYNC|MS_REC, "lastblock=00000000000000000000,umask=00000000000000000000002,dmode=00000000000000000077777,novrs,sho"...) = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
chdir("./file0") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
mkdir("./control", 000) = 0
open("./control/file0", O_RDONLY|O_CREAT|O_CLOEXEC, 000) = 4
unlink("./control/file0") = 0
rmdir("./control") = 0
[ 76.991921][ T5834] loop0: detected capacity change from 0 to 2048
[ 77.030928][ T5834] UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000)
rmdir("./control") = 0
rmdir("./control") = 0
rmdir("./control") = 0
[ 77.082527][ T5834] UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
[ 77.092722][ T5834] UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
[ 77.102899][ T5834] UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
[ 77.112973][ T5834] UDF-fs: warning (device loop0): udf_rmdir: empty directory has nlink != 2 (0)
[ 77.122423][ T5834] ------------[ cut here ]------------
[ 77.128011][ T5834] WARNING: CPU: 1 PID: 5834 at fs/inode.c:407 drop_nlink+0xc4/0x110
[ 77.136129][ T5834] Modules linked in:
[ 77.140064][ T5834] CPU: 1 UID: 0 PID: 5834 Comm: syz-executor338 Not tainted 6.12.0-syzkaller-08446-g228a1157fb9f #0
[ 77.150898][ T5834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 77.161022][ T5834] RIP: 0010:drop_nlink+0xc4/0x110
[ 77.166136][ T5834] Code: bb 70 07 00 00 be 08 00 00 00 e8 27 d8 e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 9d 40 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 77.185799][ T5834] RSP: 0018:ffffc90003f47ad0 EFLAGS: 00010293
[ 77.191872][ T5834] RAX: ffffffff82170c43 RBX: 1ffff1100ed1c100 RCX: ffff88802d9c0000
[ 77.199894][ T5834] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 77.207909][ T5834] RBP: 0000000000000000 R08: ffffffff82170bc3 R09: 1ffff920007e8ed8
[ 77.215945][ T5834] R10: dffffc0000000000 R11: fffff520007e8ed9 R12: ffff8880768e0800
[ 77.223942][ T5834] R13: ffff8880768e07b8 R14: ffff8880768e07b8 R15: dffffc0000000000
[ 77.231960][ T5834] FS: 000055556e49b380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 77.240973][ T5834] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.247668][ T5834] CR2: 000000000066c7e0 CR3: 000000003468a000 CR4: 00000000003526f0
[ 77.255724][ T5834] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 77.263700][ T5834] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 77.271720][ T5834] Call Trace:
[ 77.275071][ T5834]
[ 77.278031][ T5834] ? __warn+0x168/0x4e0
[ 77.282393][ T5834] ? drop_nlink+0xc4/0x110
[ 77.286869][ T5834] ? report_bug+0x2b3/0x500
[ 77.291425][ T5834] ? drop_nlink+0xc4/0x110
[ 77.295933][ T5834] ? handle_bug+0x60/0x90
[ 77.300304][ T5834] ? exc_invalid_op+0x1a/0x50
[ 77.305052][ T5834] ? asm_exc_invalid_op+0x1a/0x20
[ 77.310113][ T5834] ? drop_nlink+0x43/0x110
[ 77.314588][ T5834] ? drop_nlink+0xc3/0x110
[ 77.319066][ T5834] ? drop_nlink+0xc4/0x110
[ 77.323513][ T5834] udf_rmdir+0x3b8/0x6f0
[ 77.327821][ T5834] ? __pfx_udf_rmdir+0x10/0x10
[ 77.332637][ T5834] ? down_write+0x18c/0x220
[ 77.337333][ T5834] ? __pfx_down_write+0x10/0x10
[ 77.342223][ T5834] ? do_raw_spin_unlock+0x13c/0x8b0
[ 77.347502][ T5834] ? bpf_lsm_inode_rmdir+0x9/0x10
[ 77.352554][ T5834] ? security_inode_rmdir+0xd9/0x340
[ 77.357902][ T5834] vfs_rmdir+0x3a3/0x510
[ 77.362181][ T5834] do_rmdir+0x3b5/0x580
[ 77.366432][ T5834] ? __pfx_do_rmdir+0x10/0x10
[ 77.371161][ T5834] ? getname_flags+0x1e3/0x540
[ 77.376000][ T5834] __x64_sys_rmdir+0x47/0x50
[ 77.380625][ T5834] do_syscall_64+0xf3/0x230
[ 77.385182][ T5834] ? clear_bhb_loop+0x35/0x90
[ 77.389892][ T5834] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.395841][ T5834] RIP: 0033:0x7f6beb678a39
[ 77.400291][ T5834] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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
[ 77.419964][ T5834] RSP: 002b:00007fffba3588d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 77.428454][ T5834] RAX: ffffffffffffffda RBX: 000000000000003d RCX: 00007f6beb678a39
[ 77.436492][ T5834] RDX: 00007f6beb678a39 RSI: 00007f6beb678a39 RDI: 0000000020000000
[ 77.444543][ T5834] RBP: 00007f6beb6ec610 R08: 00007fffba358aa8 R09: 00007fffba358aa8
[ 77.452552][ T5834] R10: 00007fffba358aa8 R11: 0000000000000246 R12: 0000000000000001
[ 77.460581][ T5834] R13: 00007fffba358a98 R14: 0000000000000001 R15: 0000000000000001
[ 77.468634][ T5834]
[ 77.471761][ T5834] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 77.479039][ T5834] CPU: 1 UID: 0 PID: 5834 Comm: syz-executor338 Not tainted 6.12.0-syzkaller-08446-g228a1157fb9f #0
[ 77.489810][ T5834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 77.499863][ T5834] Call Trace:
[ 77.503138][ T5834]
[ 77.506068][ T5834] dump_stack_lvl+0x241/0x360
[ 77.510756][ T5834] ? __pfx_dump_stack_lvl+0x10/0x10
[ 77.515978][ T5834] ? __pfx__printk+0x10/0x10
[ 77.520596][ T5834] ? _printk+0xd5/0x120
[ 77.524758][ T5834] ? __init_begin+0x41000/0x41000
[ 77.529792][ T5834] ? vscnprintf+0x5d/0x90
[ 77.534118][ T5834] panic+0x349/0x880
[ 77.538017][ T5834] ? __warn+0x177/0x4e0
[ 77.542175][ T5834] ? __pfx_panic+0x10/0x10
[ 77.546599][ T5834] ? show_trace_log_lvl+0x3b2/0x410
[ 77.551830][ T5834] __warn+0x34b/0x4e0
[ 77.555826][ T5834] ? drop_nlink+0xc4/0x110
[ 77.560261][ T5834] report_bug+0x2b3/0x500
[ 77.564609][ T5834] ? drop_nlink+0xc4/0x110
[ 77.569053][ T5834] handle_bug+0x60/0x90
[ 77.573261][ T5834] exc_invalid_op+0x1a/0x50
[ 77.577783][ T5834] asm_exc_invalid_op+0x1a/0x20
[ 77.582650][ T5834] RIP: 0010:drop_nlink+0xc4/0x110
[ 77.587717][ T5834] Code: bb 70 07 00 00 be 08 00 00 00 e8 27 d8 e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 9d 40 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
[ 77.607342][ T5834] RSP: 0018:ffffc90003f47ad0 EFLAGS: 00010293
[ 77.613456][ T5834] RAX: ffffffff82170c43 RBX: 1ffff1100ed1c100 RCX: ffff88802d9c0000
[ 77.621442][ T5834] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 77.629426][ T5834] RBP: 0000000000000000 R08: ffffffff82170bc3 R09: 1ffff920007e8ed8
[ 77.637424][ T5834] R10: dffffc0000000000 R11: fffff520007e8ed9 R12: ffff8880768e0800
[ 77.645402][ T5834] R13: ffff8880768e07b8 R14: ffff8880768e07b8 R15: dffffc0000000000
[ 77.653498][ T5834] ? drop_nlink+0x43/0x110
[ 77.657950][ T5834] ? drop_nlink+0xc3/0x110
[ 77.662396][ T5834] udf_rmdir+0x3b8/0x6f0
[ 77.666657][ T5834] ? __pfx_udf_rmdir+0x10/0x10
[ 77.671459][ T5834] ? down_write+0x18c/0x220
[ 77.676024][ T5834] ? __pfx_down_write+0x10/0x10
[ 77.680900][ T5834] ? do_raw_spin_unlock+0x13c/0x8b0
[ 77.686114][ T5834] ? bpf_lsm_inode_rmdir+0x9/0x10
[ 77.691172][ T5834] ? security_inode_rmdir+0xd9/0x340
[ 77.696489][ T5834] vfs_rmdir+0x3a3/0x510
[ 77.700750][ T5834] do_rmdir+0x3b5/0x580
[ 77.704930][ T5834] ? __pfx_do_rmdir+0x10/0x10
[ 77.709629][ T5834] ? getname_flags+0x1e3/0x540
[ 77.714556][ T5834] __x64_sys_rmdir+0x47/0x50
[ 77.719174][ T5834] do_syscall_64+0xf3/0x230
[ 77.723699][ T5834] ? clear_bhb_loop+0x35/0x90
[ 77.728407][ T5834] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.734327][ T5834] RIP: 0033:0x7f6beb678a39
[ 77.738772][ T5834] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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
[ 77.758409][ T5834] RSP: 002b:00007fffba3588d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
[ 77.766844][ T5834] RAX: ffffffffffffffda RBX: 000000000000003d RCX: 00007f6beb678a39
[ 77.774825][ T5834] RDX: 00007f6beb678a39 RSI: 00007f6beb678a39 RDI: 0000000020000000
[ 77.782935][ T5834] RBP: 00007f6beb6ec610 R08: 00007fffba358aa8 R09: 00007fffba358aa8
[ 77.790919][ T5834] R10: 00007fffba358aa8 R11: 0000000000000246 R12: 0000000000000001
[ 77.798928][ T5834] R13: 00007fffba358a98 R14: 0000000000000001 R15: 0000000000000001
[ 77.806929][ T5834]
[ 77.810255][ T5834] Kernel Offset: disabled
[ 77.814644][ T5834] Rebooting in 86400 seconds..