[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 40.600242] JFS: discard option not supported on device [ 40.605916] JFS: discard option not supported on device executing program [ 40.706403] JFS: discard option not supported on device [ 40.711911] JFS: discard option not supported on device [ 40.800026] JFS: discard option not supported on device [ 40.805424] JFS: discard option not supported on device executing program [ 40.963652] JFS: discard option not supported on device [ 40.969342] JFS: discard option not supported on device executing program [ 41.103879] JFS: discard option not supported on device [ 41.109830] JFS: discard option not supported on device executing program [ 41.242617] JFS: discard option not supported on device [ 41.248233] JFS: discard option not supported on device executing program [ 41.383261] JFS: discard option not supported on device [ 41.388907] JFS: discard option not supported on device executing program [ 41.522444] JFS: discard option not supported on device [ 41.528108] JFS: discard option not supported on device executing program executing program [ 41.664502] JFS: discard option not supported on device [ 41.670212] JFS: discard option not supported on device [ 41.762159] JFS: discard option not supported on device [ 41.767553] JFS: discard option not supported on device executing program [ 41.912347] JFS: discard option not supported on device [ 41.918034] JFS: discard option not supported on device executing program [ 42.063718] JFS: discard option not supported on device [ 42.069316] JFS: discard option not supported on device executing program [ 42.193281] JFS: discard option not supported on device [ 42.198791] JFS: discard option not supported on device executing program executing program [ 42.332166] JFS: discard option not supported on device [ 42.337673] JFS: discard option not supported on device executing program [ 42.416850] JFS: discard option not supported on device [ 42.422387] JFS: discard option not supported on device [ 42.496502] JFS: discard option not supported on device [ 42.502325] JFS: discard option not supported on device executing program executing program [ 42.652130] JFS: discard option not supported on device [ 42.657806] JFS: discard option not supported on device executing program [ 42.729263] JFS: discard option not supported on device [ 42.734721] JFS: discard option not supported on device executing program [ 42.839657] JFS: discard option not supported on device [ 42.845122] JFS: discard option not supported on device [ 42.930914] JFS: discard option not supported on device [ 42.936313] JFS: discard option not supported on device executing program executing program [ 43.055953] JFS: discard option not supported on device [ 43.061911] JFS: discard option not supported on device executing program [ 43.146629] JFS: discard option not supported on device [ 43.153279] JFS: discard option not supported on device executing program [ 43.249251] JFS: discard option not supported on device [ 43.254654] JFS: discard option not supported on device [ 43.338746] JFS: discard option not supported on device [ 43.344149] JFS: discard option not supported on device executing program executing program [ 43.472632] JFS: discard option not supported on device [ 43.478134] JFS: discard option not supported on device executing program [ 43.549226] JFS: discard option not supported on device [ 43.554626] JFS: discard option not supported on device [ 43.631259] JFS: discard option not supported on device [ 43.636656] JFS: discard option not supported on device executing program executing program [ 43.785238] JFS: discard option not supported on device [ 43.790948] JFS: discard option not supported on device [ 43.883024] JFS: discard option not supported on device [ 43.888528] JFS: discard option not supported on device executing program executing program [ 44.022300] JFS: discard option not supported on device [ 44.027974] JFS: discard option not supported on device [ 44.101261] JFS: discard option not supported on device [ 44.106770] JFS: discard option not supported on device executing program [ 44.229832] JFS: discard option not supported on device [ 44.235231] JFS: discard option not supported on device executing program [ 44.361757] JFS: discard option not supported on device [ 44.367479] JFS: discard option not supported on device executing program executing program [ 44.501842] JFS: discard option not supported on device [ 44.507325] JFS: discard option not supported on device executing program [ 44.587696] JFS: discard option not supported on device [ 44.593098] JFS: discard option not supported on device [ 44.668363] JFS: discard option not supported on device [ 44.673756] JFS: discard option not supported on device executing program executing program [ 44.800992] JFS: discard option not supported on device [ 44.806646] JFS: discard option not supported on device executing program [ 44.879880] JFS: discard option not supported on device [ 44.885351] JFS: discard option not supported on device executing program [ 44.969776] JFS: discard option not supported on device [ 44.975172] JFS: discard option not supported on device executing program [ 45.057634] JFS: discard option not supported on device [ 45.063089] JFS: discard option not supported on device [ 45.133515] JFS: discard option not supported on device [ 45.138991] JFS: discard option not supported on device executing program [ 45.283790] JFS: discard option not supported on device [ 45.289282] JFS: discard option not supported on device executing program executing program [ 45.420796] JFS: discard option not supported on device [ 45.426506] JFS: discard option not supported on device [ 45.498250] JFS: discard option not supported on device [ 45.503714] JFS: discard option not supported on device executing program executing program [ 45.645383] JFS: discard option not supported on device [ 45.650916] JFS: discard option not supported on device executing program [ 45.738049] JFS: discard option not supported on device [ 45.743445] JFS: discard option not supported on device executing program [ 45.827107] JFS: discard option not supported on device [ 45.832508] JFS: discard option not supported on device [ 45.907953] JFS: discard option not supported on device [ 45.913370] JFS: discard option not supported on device executing program [ 46.045035] JFS: discard option not supported on device [ 46.050637] JFS: discard option not supported on device executing program [ 46.181250] JFS: discard option not supported on device [ 46.188001] JFS: discard option not supported on device executing program executing program [ 46.332934] JFS: discard option not supported on device [ 46.338512] JFS: discard option not supported on device executing program [ 46.418392] JFS: discard option not supported on device [ 46.423924] JFS: discard option not supported on device executing program [ 46.507888] JFS: discard option not supported on device [ 46.513296] JFS: discard option not supported on device [ 46.601647] JFS: discard option not supported on device [ 46.607142] JFS: discard option not supported on device executing program [ 46.742555] JFS: discard option not supported on device [ 46.748339] JFS: discard option not supported on device executing program executing program [ 46.900662] JFS: discard option not supported on device [ 46.906355] JFS: discard option not supported on device [ 46.983824] JFS: discard option not supported on device [ 46.989369] JFS: discard option not supported on device [ 47.000680] kasan: CONFIG_KASAN_INLINE enabled [ 47.005421] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.016635] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.022955] Modules linked in: [ 47.026127] CPU: 1 PID: 7984 Comm: syz-executor125 Not tainted 4.14.302-syzkaller #0 [ 47.033980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 47.043310] task: ffff88809ab8c380 task.stack: ffff888093318000 [ 47.049354] RIP: 0010:lbmStartIO+0x14a/0x490 [ 47.053737] RSP: 0018:ffff88809331faf8 EFLAGS: 00010202 [ 47.059085] RAX: dffffc0000000000 RBX: ffff8880aa2d3700 RCX: 0000000000000003 [ 47.066333] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 47.073578] RBP: ffff8880b5302200 R08: 0000000000000001 R09: ffff8880b5302200 [ 47.080823] R10: ffff8880b5302287 R11: 0000000000000000 R12: ffff8880b280a480 [ 47.088065] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 47.095394] FS: 000055555699e300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 47.103615] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.109497] CR2: 00007f51b9e29000 CR3: 00000000b55e8000 CR4: 00000000003406e0 [ 47.116741] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.123984] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.131228] Call Trace: [ 47.133794] lbmWrite+0x254/0x380 [ 47.137224] lmNextPage.isra.0+0x263/0x700 [ 47.141436] lmWriteRecord+0x8b2/0xe30 [ 47.145300] ? mark_held_locks+0xa6/0xf0 [ 47.149336] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 47.154413] lmLogSync+0x126/0x660 [ 47.157937] ? lmWriteRecord+0xe30/0xe30 [ 47.161973] ? dqput+0x30/0x30 [ 47.165144] jfs_syncpt+0x66/0x70 [ 47.168611] jfs_sync_fs+0x80/0xa0 [ 47.172125] ? jfs_statfs+0x510/0x510 [ 47.175903] sync_filesystem+0xe2/0x230 [ 47.179853] generic_shutdown_super+0x70/0x370 [ 47.184415] kill_block_super+0x95/0xe0 [ 47.188361] deactivate_locked_super+0x6c/0xd0 [ 47.192917] deactivate_super+0x7f/0xa0 [ 47.196869] cleanup_mnt+0x186/0x2c0 [ 47.200563] task_work_run+0x11f/0x190 [ 47.204437] exit_to_usermode_loop+0x1ad/0x200 [ 47.208995] do_syscall_64+0x4a3/0x640 [ 47.212863] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.218034] RIP: 0033:0x7f13af6f9e67 [ 47.221718] RSP: 002b:00007ffcb8957bc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 47.229397] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f13af6f9e67 [ 47.236641] RDX: 00007ffcb8957c8a RSI: 000000000000000a RDI: 00007ffcb8957c80 [ 47.243884] RBP: 00007ffcb8957c80 R08: 00000000ffffffff R09: 00007ffcb8957a60 [ 47.251130] R10: 000055555699f683 R11: 0000000000000202 R12: 00007ffcb8958cf0 [ 47.258379] R13: 000055555699f5f0 R14: 00007ffcb8957bf0 R15: 0000000000000039 [ 47.265625] 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 [ 47.284694] RIP: lbmStartIO+0x14a/0x490 RSP: ffff88809331faf8 [ 47.291501] ---[ end trace cea026d6966909b8 ]--- [ 47.297506] Kernel panic - not syncing: Fatal exception [ 47.303088] Kernel Offset: disabled [ 47.306792] Rebooting in 86400 seconds..