[ 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 '10.128.0.143' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.992451] JFS: discard option not supported on device [ 33.998128] JFS: discard option not supported on device executing program executing program [ 34.146775] JFS: discard option not supported on device [ 34.152182] JFS: discard option not supported on device [ 34.256329] JFS: discard option not supported on device [ 34.269104] JFS: discard option not supported on device executing program [ 34.415091] JFS: discard option not supported on device [ 34.420502] JFS: discard option not supported on device executing program executing program [ 34.565573] JFS: discard option not supported on device [ 34.571337] JFS: discard option not supported on device [ 34.692965] JFS: discard option not supported on device [ 34.698627] JFS: discard option not supported on device executing program [ 34.881529] JFS: discard option not supported on device [ 34.887004] JFS: discard option not supported on device executing program [ 35.042774] JFS: discard option not supported on device [ 35.048261] JFS: discard option not supported on device executing program [ 35.215968] JFS: discard option not supported on device [ 35.221689] JFS: discard option not supported on device executing program executing program [ 35.402594] JFS: discard option not supported on device [ 35.408241] JFS: discard option not supported on device [ 35.493802] JFS: discard option not supported on device [ 35.499293] JFS: discard option not supported on device executing program executing program [ 35.656609] JFS: discard option not supported on device [ 35.662034] JFS: discard option not supported on device executing program [ 35.779053] JFS: discard option not supported on device [ 35.784776] JFS: discard option not supported on device [ 35.892716] JFS: discard option not supported on device [ 35.898251] JFS: discard option not supported on device executing program executing program [ 36.045379] JFS: discard option not supported on device [ 36.050797] JFS: discard option not supported on device [ 36.137678] JFS: discard option not supported on device [ 36.143176] JFS: discard option not supported on device executing program executing program [ 36.290032] JFS: discard option not supported on device [ 36.295556] JFS: discard option not supported on device executing program [ 36.405282] JFS: discard option not supported on device [ 36.410689] JFS: discard option not supported on device [ 36.505955] JFS: discard option not supported on device [ 36.511388] JFS: discard option not supported on device executing program executing program [ 36.683529] JFS: discard option not supported on device [ 36.689041] JFS: discard option not supported on device executing program [ 36.800215] JFS: discard option not supported on device [ 36.805850] JFS: discard option not supported on device [ 36.901694] JFS: discard option not supported on device [ 36.911988] JFS: discard option not supported on device executing program [ 37.070105] JFS: discard option not supported on device [ 37.075632] JFS: discard option not supported on device executing program executing program [ 37.237314] JFS: discard option not supported on device [ 37.242721] JFS: discard option not supported on device executing program [ 37.343818] JFS: discard option not supported on device [ 37.349219] JFS: discard option not supported on device executing program [ 37.473164] JFS: discard option not supported on device [ 37.478579] JFS: discard option not supported on device executing program [ 37.576557] JFS: discard option not supported on device [ 37.582066] JFS: discard option not supported on device executing program [ 37.676863] JFS: discard option not supported on device [ 37.682272] JFS: discard option not supported on device executing program [ 37.786105] JFS: discard option not supported on device [ 37.791536] JFS: discard option not supported on device executing program [ 37.885301] JFS: discard option not supported on device [ 37.890743] JFS: discard option not supported on device [ 37.987532] JFS: discard option not supported on device [ 37.995623] JFS: discard option not supported on device executing program [ 38.153236] JFS: discard option not supported on device [ 38.159030] JFS: discard option not supported on device executing program executing program [ 38.319651] JFS: discard option not supported on device [ 38.325358] JFS: discard option not supported on device executing program [ 38.430433] JFS: discard option not supported on device [ 38.435982] JFS: discard option not supported on device [ 38.548235] JFS: discard option not supported on device [ 38.553709] JFS: discard option not supported on device executing program executing program [ 38.714749] JFS: discard option not supported on device [ 38.720224] JFS: discard option not supported on device [ 38.820686] JFS: discard option not supported on device [ 38.826139] JFS: discard option not supported on device executing program executing program [ 38.981387] JFS: discard option not supported on device [ 38.986922] JFS: discard option not supported on device [ 39.100534] JFS: discard option not supported on device [ 39.106036] JFS: discard option not supported on device executing program executing program [ 39.279494] JFS: discard option not supported on device [ 39.284957] JFS: discard option not supported on device executing program [ 39.396404] JFS: discard option not supported on device [ 39.402048] JFS: discard option not supported on device [ 39.497721] JFS: discard option not supported on device [ 39.503781] JFS: discard option not supported on device executing program executing program [ 39.657881] JFS: discard option not supported on device [ 39.663393] JFS: discard option not supported on device [ 39.760860] JFS: discard option not supported on device [ 39.766415] JFS: discard option not supported on device executing program executing program [ 39.920180] JFS: discard option not supported on device [ 39.925702] JFS: discard option not supported on device executing program [ 40.023932] JFS: discard option not supported on device [ 40.029469] JFS: discard option not supported on device [ 40.148126] JFS: discard option not supported on device [ 40.153601] JFS: discard option not supported on device executing program [ 40.348334] JFS: discard option not supported on device [ 40.353828] JFS: discard option not supported on device executing program executing program [ 40.530652] JFS: discard option not supported on device [ 40.536234] JFS: discard option not supported on device executing program [ 40.628629] JFS: discard option not supported on device [ 40.634588] JFS: discard option not supported on device executing program [ 40.734054] JFS: discard option not supported on device [ 40.739545] JFS: discard option not supported on device executing program [ 40.843388] JFS: discard option not supported on device [ 40.848808] JFS: discard option not supported on device executing program [ 40.968266] JFS: discard option not supported on device [ 40.973966] JFS: discard option not supported on device [ 41.078045] JFS: discard option not supported on device [ 41.083843] JFS: discard option not supported on device executing program executing program [ 41.250703] JFS: discard option not supported on device [ 41.256189] JFS: discard option not supported on device [ 41.345801] JFS: discard option not supported on device [ 41.351940] JFS: discard option not supported on device executing program [ 41.512699] JFS: discard option not supported on device [ 41.518120] JFS: discard option not supported on device [ 41.533355] kasan: CONFIG_KASAN_INLINE enabled [ 41.538128] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.549291] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.555519] Modules linked in: [ 41.558705] CPU: 0 PID: 7980 Comm: syz-executor387 Not tainted 4.14.307-syzkaller #0 [ 41.566563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 41.575910] task: ffff888095828240 task.stack: ffff8880a1fe0000 [ 41.582003] RIP: 0010:lbmStartIO+0x14a/0x490 [ 41.586400] RSP: 0018:ffff8880a1fe7af8 EFLAGS: 00010202 [ 41.591743] RAX: dffffc0000000000 RBX: ffff88809bc64700 RCX: 0000000000000003 [ 41.599015] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 41.606268] RBP: ffff8880a9471c80 R08: 0000000000000001 R09: ffff8880a9471c80 [ 41.613544] R10: ffff8880a9471d07 R11: 0000000000000000 R12: ffff8880b31976c0 [ 41.620809] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 41.628087] FS: 0000555556750300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 41.636312] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.642185] CR2: 0000555556759628 CR3: 00000000a4711000 CR4: 00000000003406f0 [ 41.649454] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.656799] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.664056] Call Trace: [ 41.666651] lbmWrite+0x254/0x380 [ 41.670089] lmNextPage.isra.0+0x263/0x700 [ 41.674326] lmWriteRecord+0x8b2/0xe30 [ 41.678200] ? mark_held_locks+0xa6/0xf0 [ 41.682249] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 41.687349] lmLogSync+0x126/0x660 [ 41.690882] ? lmWriteRecord+0xe30/0xe30 [ 41.694930] ? dqput+0x30/0x30 [ 41.698118] jfs_syncpt+0x66/0x70 [ 41.701597] jfs_sync_fs+0x80/0xa0 [ 41.705129] ? jfs_statfs+0x510/0x510 [ 41.708911] sync_filesystem+0xe2/0x230 [ 41.712882] generic_shutdown_super+0x70/0x370 [ 41.717447] kill_block_super+0x95/0xe0 [ 41.721404] deactivate_locked_super+0x6c/0xd0 [ 41.725976] deactivate_super+0x7f/0xa0 [ 41.729932] cleanup_mnt+0x186/0x2c0 [ 41.733639] task_work_run+0x11f/0x190 [ 41.737512] exit_to_usermode_loop+0x1ad/0x200 [ 41.742081] do_syscall_64+0x4a3/0x640 [ 41.745954] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 41.751125] RIP: 0033:0x7fb714a1cdb7 [ 41.754826] RSP: 002b:00007ffc2a0e0d38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 41.762522] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb714a1cdb7 [ 41.769779] RDX: 00007ffc2a0e0dfa RSI: 000000000000000a RDI: 00007ffc2a0e0df0 [ 41.777035] RBP: 00007ffc2a0e0df0 R08: 00000000ffffffff R09: 00007ffc2a0e0bd0 [ 41.784298] R10: 0000555556751683 R11: 0000000000000202 R12: 00007ffc2a0e1e60 [ 41.791551] R13: 00005555567515f0 R14: 00007ffc2a0e0d60 R15: 0000000000000039 [ 41.798811] 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 [ 41.817948] RIP: lbmStartIO+0x14a/0x490 RSP: ffff8880a1fe7af8 [ 41.830712] ---[ end trace 114598baba2255b5 ]--- [ 41.830719] Kernel panic - not syncing: Fatal exception [ 41.831007] Kernel Offset: disabled [ 41.844807] Rebooting in 86400 seconds..