[ 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 '10.128.1.39' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 287.585363] JFS: discard option not supported on device executing program [ 287.638263] JFS: discard option not supported on device executing program [ 287.683620] JFS: discard option not supported on device executing program [ 287.747694] JFS: discard option not supported on device executing program [ 287.806843] JFS: discard option not supported on device executing program [ 287.876974] JFS: discard option not supported on device executing program [ 287.928338] JFS: discard option not supported on device executing program [ 287.977397] JFS: discard option not supported on device executing program [ 288.017862] JFS: discard option not supported on device executing program [ 288.084416] JFS: discard option not supported on device executing program [ 288.150368] JFS: discard option not supported on device executing program [ 288.196710] JFS: discard option not supported on device [ 288.248725] JFS: discard option not supported on device executing program executing program [ 288.337179] JFS: discard option not supported on device executing program [ 288.396623] JFS: discard option not supported on device executing program [ 288.447380] JFS: discard option not supported on device [ 288.507776] JFS: discard option not supported on device executing program executing program executing program [ 288.591617] JFS: discard option not supported on device executing program [ 288.647344] JFS: discard option not supported on device executing program [ 288.707146] JFS: discard option not supported on device executing program [ 288.757440] JFS: discard option not supported on device executing program executing program [ 288.818450] JFS: discard option not supported on device [ 288.857048] JFS: discard option not supported on device executing program [ 288.916896] JFS: discard option not supported on device [ 288.977774] JFS: discard option not supported on device executing program executing program [ 289.050731] JFS: discard option not supported on device executing program [ 289.120277] JFS: discard option not supported on device executing program [ 289.168123] JFS: discard option not supported on device executing program [ 289.227609] JFS: discard option not supported on device [ 289.287076] JFS: discard option not supported on device executing program [ 289.369880] JFS: discard option not supported on device executing program executing program [ 289.448109] JFS: discard option not supported on device [ 289.496877] JFS: discard option not supported on device executing program [ 289.574312] JFS: discard option not supported on device executing program [ 289.660869] JFS: discard option not supported on device executing program executing program [ 289.740169] JFS: discard option not supported on device executing program [ 289.787646] JFS: discard option not supported on device executing program [ 289.848862] JFS: discard option not supported on device executing program [ 289.916477] JFS: discard option not supported on device [ 289.977528] JFS: discard option not supported on device executing program executing program [ 290.055231] JFS: discard option not supported on device executing program executing program executing program [ 290.136585] JFS: discard option not supported on device executing program [ 290.207245] JFS: discard option not supported on device executing program [ 290.267110] JFS: discard option not supported on device executing program [ 290.326369] JFS: discard option not supported on device executing program [ 290.377393] JFS: discard option not supported on device [ 290.437125] JFS: discard option not supported on device executing program executing program [ 290.520449] JFS: discard option not supported on device executing program [ 290.586518] JFS: discard option not supported on device executing program [ 290.636987] JFS: discard option not supported on device executing program [ 290.696467] JFS: discard option not supported on device executing program [ 290.746971] JFS: discard option not supported on device [ 290.786764] JFS: discard option not supported on device executing program executing program [ 290.862561] JFS: discard option not supported on device [ 290.915775] JFS: discard option not supported on device executing program executing program executing program [ 290.990008] JFS: discard option not supported on device [ 291.037563] JFS: discard option not supported on device [ 291.048091] kasan: CONFIG_KASAN_INLINE enabled [ 291.052789] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 291.062394] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 291.068623] Modules linked in: [ 291.071793] CPU: 1 PID: 7999 Comm: syz-executor344 Not tainted 4.14.295-syzkaller #0 [ 291.079647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 291.088977] task: ffff8880962582c0 task.stack: ffff888091bf0000 [ 291.095012] RIP: 0010:lbmStartIO+0x14a/0x490 [ 291.099393] RSP: 0018:ffff888091bf7af8 EFLAGS: 00010202 [ 291.104836] RAX: dffffc0000000000 RBX: ffff8880aaa07100 RCX: 0000000000000003 [ 291.112083] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 291.119327] RBP: ffff8880a1f08c80 R08: 0000000000000001 R09: ffff8880a1f08c80 [ 291.126580] R10: ffff8880a1f08d07 R11: 0000000000000000 R12: ffff888096d1e940 [ 291.133828] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 291.141079] FS: 0000555557552300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 291.149281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 291.155137] CR2: 00007ffdb0450fe8 CR3: 00000000aac33000 CR4: 00000000003406e0 [ 291.162382] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 291.169642] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 291.176893] Call Trace: [ 291.179464] lbmWrite+0x254/0x380 [ 291.182894] lmNextPage.isra.0+0x263/0x700 [ 291.187104] lmWriteRecord+0x8b2/0xe30 [ 291.190967] ? mark_held_locks+0xa6/0xf0 [ 291.195004] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 291.200084] lmLogSync+0x126/0x660 [ 291.203612] ? lmWriteRecord+0xe30/0xe30 [ 291.207649] ? dqput+0x30/0x30 [ 291.210821] jfs_syncpt+0x66/0x70 [ 291.214253] jfs_sync_fs+0x80/0xa0 [ 291.217773] ? jfs_statfs+0x510/0x510 [ 291.221551] sync_filesystem+0xe2/0x230 [ 291.225500] generic_shutdown_super+0x70/0x370 [ 291.230059] kill_block_super+0x95/0xe0 [ 291.234007] deactivate_locked_super+0x6c/0xd0 [ 291.238564] deactivate_super+0x7f/0xa0 [ 291.242514] cleanup_mnt+0x186/0x2c0 [ 291.246200] task_work_run+0x11f/0x190 [ 291.250061] exit_to_usermode_loop+0x1ad/0x200 [ 291.254618] do_syscall_64+0x4a3/0x640 [ 291.258489] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 291.263652] RIP: 0033:0x7f2038241847 [ 291.267338] RSP: 002b:00007ffdb04517b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 291.275023] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2038241847 [ 291.282282] RDX: 00007ffdb045187a RSI: 000000000000000a RDI: 00007ffdb0451870 [ 291.289533] RBP: 00007ffdb0451870 R08: 00000000ffffffff R09: 00007ffdb0451650 [ 291.296775] R10: 0000555557553683 R11: 0000000000000206 R12: 00007ffdb04528e0 [ 291.304018] R13: 00005555575535f0 R14: 00007ffdb04517e0 R15: 000000000000003d [ 291.311269] 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 [ 291.330343] RIP: lbmStartIO+0x14a/0x490 RSP: ffff888091bf7af8 [ 291.346925] ---[ end trace 2816c310cdd69556 ]--- [ 291.351682] Kernel panic - not syncing: Fatal exception [ 291.357179] Kernel Offset: disabled [ 291.360786] Rebooting in 86400 seconds..