[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.105' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.797231] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 35.805871] REISERFS (device loop0): using ordered data mode [ 35.811778] reiserfs: using flush barriers [ 35.818916] 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 [ 35.835301] REISERFS (device loop0): checking transaction log (loop0) [ 35.888759] REISERFS (device loop0): Using r5 hash to sort names [ 35.895506] ------------[ cut here ]------------ [ 35.900394] WARNING: CPU: 1 PID: 8100 at fs/inode.c:286 drop_nlink.cold+0x11/0x41 [ 35.908090] Kernel panic - not syncing: panic_on_warn set ... [ 35.908090] [ 35.915440] CPU: 1 PID: 8100 Comm: syz-executor104 Not tainted 4.19.211-syzkaller #0 [ 35.923353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.932700] Call Trace: [ 35.935283] dump_stack+0x1fc/0x2ef [ 35.938982] panic+0x26a/0x50e [ 35.942161] ? __warn_printk+0xf3/0xf3 [ 35.946033] ? drop_nlink.cold+0x11/0x41 [ 35.950079] ? __probe_kernel_read+0x130/0x1b0 [ 35.954644] ? __warn.cold+0x5/0x5a [ 35.958252] ? __warn+0xe4/0x200 [ 35.961603] ? drop_nlink.cold+0x11/0x41 [ 35.965660] __warn.cold+0x20/0x5a [ 35.969200] ? drop_nlink.cold+0x11/0x41 [ 35.973259] report_bug+0x262/0x2b0 [ 35.976885] do_error_trap+0x1d7/0x310 [ 35.980757] ? math_error+0x310/0x310 [ 35.984543] ? irq_work_claim+0xa6/0xc0 [ 35.988501] ? irq_work_queue+0x29/0x80 [ 35.992456] ? error_entry+0x72/0xd0 [ 35.996173] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.001258] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.006085] invalid_op+0x14/0x20 [ 36.009518] RIP: 0010:drop_nlink.cold+0x11/0x41 [ 36.014165] Code: f9 e8 9c bd 6d f9 48 c7 c7 80 a8 74 88 e8 fb ee fe ff 0f 0b e9 9f 50 b4 f9 e8 84 bd 6d f9 48 c7 c7 80 b0 74 88 e8 e3 ee fe ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 0f b6 04 02 [ 36.033050] RSP: 0018:ffff88809244f940 EFLAGS: 00010282 [ 36.038392] RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.045647] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012489f1a [ 36.052896] RBP: ffff88808ac6c740 R08: 0000000000000024 R09: 0000000000000000 [ 36.060142] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808ac6c788 [ 36.067391] R13: 0000000000000000 R14: ffff88809244f9e0 R15: ffff88808ac6c768 [ 36.074653] ? vprintk_func+0x81/0x180 [ 36.078526] reiserfs_mkdir+0x785/0x980 [ 36.082485] ? reiserfs_mknod+0x700/0x700 [ 36.086627] reiserfs_xattr_init+0x406/0xae0 [ 36.091049] reiserfs_fill_super+0x1f54/0x2d80 [ 36.095617] ? reiserfs_remount+0x1540/0x1540 [ 36.100094] ? lock_downgrade+0x720/0x720 [ 36.104577] ? snprintf+0xbb/0xf0 [ 36.108018] ? wait_for_completion_io+0x10/0x10 [ 36.112669] mount_bdev+0x2fc/0x3b0 [ 36.116296] ? reiserfs_remount+0x1540/0x1540 [ 36.120775] mount_fs+0xa3/0x310 [ 36.124126] vfs_kern_mount.part.0+0x68/0x470 [ 36.128694] do_mount+0x115c/0x2f50 [ 36.132399] ? lock_acquire+0x170/0x3c0 [ 36.136354] ? check_preemption_disabled+0x41/0x280 [ 36.141346] ? copy_mount_string+0x40/0x40 [ 36.145571] ? copy_mount_options+0x59/0x380 [ 36.149969] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.154968] ? kmem_cache_alloc_trace+0x323/0x380 [ 36.159878] ? copy_mount_options+0x26f/0x380 [ 36.164355] ksys_mount+0xcf/0x130 [ 36.168337] __x64_sys_mount+0xba/0x150 [ 36.172297] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.176861] do_syscall_64+0xf9/0x620 [ 36.180647] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.185819] RIP: 0033:0x7fa067890afa [ 36.189516] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.208399] RSP: 002b:00007ffce6a72d48 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.216141] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa067890afa [ 36.223403] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffce6a72d60 [ 36.230655] RBP: 00007ffce6a72d60 R08: 00007ffce6a72da0 R09: 00000000000010f4 [ 36.237903] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.245151] R13: 0000555555bd92c0 R14: 0000000000000000 R15: 00007ffce6a72da0 [ 36.252589] Kernel Offset: disabled [ 36.256264] Rebooting in 86400 seconds..