[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.180' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 147.112859] JFS: discard option not supported on device executing program [ 147.243124] JFS: discard option not supported on device executing program executing program [ 147.380883] JFS: discard option not supported on device executing program [ 147.479187] JFS: discard option not supported on device executing program [ 147.575439] JFS: discard option not supported on device executing program [ 147.658758] JFS: discard option not supported on device executing program [ 147.756662] JFS: discard option not supported on device [ 147.827647] JFS: discard option not supported on device executing program executing program [ 147.969297] JFS: discard option not supported on device executing program [ 148.040687] JFS: discard option not supported on device executing program [ 148.130412] JFS: discard option not supported on device executing program [ 148.206325] JFS: discard option not supported on device executing program [ 148.300992] JFS: discard option not supported on device [ 148.379837] JFS: discard option not supported on device executing program executing program [ 148.503226] JFS: discard option not supported on device [ 148.575275] JFS: discard option not supported on device executing program [ 148.702033] JFS: discard option not supported on device executing program [ 148.831532] JFS: discard option not supported on device executing program executing program [ 148.980830] JFS: discard option not supported on device executing program [ 149.061329] JFS: discard option not supported on device executing program [ 149.139141] JFS: discard option not supported on device [ 149.205035] JFS: discard option not supported on device executing program [ 149.334992] JFS: discard option not supported on device executing program executing program [ 149.491128] JFS: discard option not supported on device [ 149.558916] JFS: discard option not supported on device executing program executing program [ 149.701250] JFS: discard option not supported on device [ 149.771008] JFS: discard option not supported on device executing program executing program [ 149.890375] JFS: discard option not supported on device [ 149.981037] JFS: discard option not supported on device executing program executing program [ 150.109515] JFS: discard option not supported on device [ 150.181779] JFS: discard option not supported on device executing program executing program [ 150.313636] JFS: discard option not supported on device [ 150.388777] JFS: discard option not supported on device executing program [ 150.511345] JFS: discard option not supported on device executing program executing program [ 150.650770] JFS: discard option not supported on device executing program [ 150.723641] JFS: discard option not supported on device [ 150.816161] JFS: discard option not supported on device executing program executing program [ 150.952113] JFS: discard option not supported on device [ 151.021953] JFS: discard option not supported on device executing program [ 151.148230] JFS: discard option not supported on device executing program [ 151.291044] JFS: discard option not supported on device executing program [ 151.431367] JFS: discard option not supported on device executing program executing program [ 151.563624] JFS: discard option not supported on device [ 151.662015] JFS: discard option not supported on device executing program [ 151.792702] JFS: discard option not supported on device executing program executing program [ 151.930904] JFS: discard option not supported on device executing program [ 152.030788] JFS: discard option not supported on device [ 152.112197] JFS: discard option not supported on device executing program [ 152.230057] JFS: discard option not supported on device executing program executing program [ 152.360551] JFS: discard option not supported on device executing program [ 152.439448] JFS: discard option not supported on device executing program [ 152.525715] JFS: discard option not supported on device [ 152.609473] JFS: discard option not supported on device executing program [ 152.741593] JFS: discard option not supported on device executing program [ 152.872634] JFS: discard option not supported on device executing program [ 153.010814] JFS: discard option not supported on device executing program [ 153.134155] JFS: discard option not supported on device [ 153.148464] kasan: CONFIG_KASAN_INLINE enabled [ 153.153262] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 153.163623] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 153.169852] Modules linked in: [ 153.173028] CPU: 1 PID: 7986 Comm: syz-executor301 Not tainted 4.14.302-syzkaller #0 [ 153.180877] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 153.190203] task: ffff8880b52ea440 task.stack: ffff8880b46c0000 [ 153.196233] RIP: 0010:lbmStartIO+0x14a/0x490 [ 153.200611] RSP: 0018:ffff8880b46c7af8 EFLAGS: 00010202 [ 153.205944] RAX: dffffc0000000000 RBX: ffff8880aa5a2700 RCX: 0000000000000003 [ 153.213184] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 153.220425] RBP: ffff8880b003f000 R08: 0000000000000001 R09: ffff8880b003f000 [ 153.227667] R10: ffff8880b003f087 R11: 0000000000000000 R12: ffff8880b3046dc0 [ 153.234913] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 153.242153] FS: 0000555556393300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 153.250347] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 153.256199] CR2: 000055555639c628 CR3: 00000000b4b7c000 CR4: 00000000003406e0 [ 153.263445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 153.270685] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 153.277927] Call Trace: [ 153.280489] lbmWrite+0x254/0x380 [ 153.283916] lmNextPage.isra.0+0x263/0x700 [ 153.288123] lmWriteRecord+0x8b2/0xe30 [ 153.291983] ? mark_held_locks+0xa6/0xf0 [ 153.296015] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 153.301089] lmLogSync+0x126/0x660 [ 153.304599] ? lmWriteRecord+0xe30/0xe30 [ 153.308630] ? dqput+0x30/0x30 [ 153.311797] jfs_syncpt+0x66/0x70 [ 153.315220] jfs_sync_fs+0x80/0xa0 [ 153.318731] ? jfs_statfs+0x510/0x510 [ 153.322502] sync_filesystem+0xe2/0x230 [ 153.326446] generic_shutdown_super+0x70/0x370 [ 153.330996] kill_block_super+0x95/0xe0 [ 153.334941] deactivate_locked_super+0x6c/0xd0 [ 153.339492] deactivate_super+0x7f/0xa0 [ 153.343436] cleanup_mnt+0x186/0x2c0 [ 153.347121] task_work_run+0x11f/0x190 [ 153.350984] exit_to_usermode_loop+0x1ad/0x200 [ 153.355534] do_syscall_64+0x4a3/0x640 [ 153.359395] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 153.364554] RIP: 0033:0x7f3ef17ddd57 [ 153.368235] RSP: 002b:00007fff5a1a9148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 153.375921] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3ef17ddd57 [ 153.383159] RDX: 00007fff5a1a920a RSI: 000000000000000a RDI: 00007fff5a1a9200 [ 153.390399] RBP: 00007fff5a1a9200 R08: 00000000ffffffff R09: 00007fff5a1a8fe0 [ 153.397642] R10: 0000555556394683 R11: 0000000000000206 R12: 00007fff5a1aa270 [ 153.404885] R13: 00005555563945f0 R14: 00007fff5a1a9170 R15: 0000000000000039 [ 153.412128] Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 [ 153.431187] RIP: lbmStartIO+0x14a/0x490 RSP: ffff8880b46c7af8 [ 153.437252] ---[ end trace e3749c9b84d40887 ]--- [ 153.442022] Kernel panic - not syncing: Fatal exception [ 153.447528] Kernel Offset: disabled [ 153.451134] Rebooting in 86400 seconds..