[ 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 '10.128.1.148' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.548281] kasan: CONFIG_KASAN_INLINE enabled [ 35.553006] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.561819] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.568047] Modules linked in: [ 35.571214] CPU: 0 PID: 8001 Comm: syz-executor264 Not tainted 4.14.301-syzkaller #0 [ 35.579062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.588390] task: ffff8880ac144200 task.stack: ffff8880b3290000 [ 35.594424] RIP: 0010:lbmStartIO+0x14a/0x490 [ 35.598813] RSP: 0018:ffff8880b3297af8 EFLAGS: 00010202 [ 35.604145] RAX: dffffc0000000000 RBX: ffff8880b17f6300 RCX: 0000000000000003 [ 35.611385] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 35.618626] RBP: ffff8880aa856340 R08: 0000000000000001 R09: ffff8880aa856340 [ 35.625865] R10: ffff8880aa8563c7 R11: 0000000000000000 R12: ffff8880b6139200 [ 35.633105] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.640521] FS: 00005555559bb300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 35.648715] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.654567] CR2: 00007f295f88c000 CR3: 000000009fefa000 CR4: 00000000003406f0 [ 35.661812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.669052] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.676292] Call Trace: [ 35.678856] lbmWrite+0x254/0x380 [ 35.682284] lmNextPage.isra.0+0x263/0x700 [ 35.686496] lmWriteRecord+0x8b2/0xe30 [ 35.690360] ? mark_held_locks+0xa6/0xf0 [ 35.694393] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 35.699478] lmLogSync+0x126/0x660 [ 35.703002] ? lmWriteRecord+0xe30/0xe30 [ 35.707036] ? dqput+0x30/0x30 [ 35.710206] jfs_syncpt+0x66/0x70 [ 35.713638] jfs_sync_fs+0x80/0xa0 [ 35.717166] ? jfs_statfs+0x510/0x510 [ 35.720947] sync_filesystem+0xe2/0x230 [ 35.724901] generic_shutdown_super+0x70/0x370 [ 35.729463] kill_block_super+0x95/0xe0 [ 35.733504] deactivate_locked_super+0x6c/0xd0 [ 35.738057] deactivate_super+0x7f/0xa0 [ 35.742011] cleanup_mnt+0x186/0x2c0 [ 35.745700] task_work_run+0x11f/0x190 [ 35.749559] exit_to_usermode_loop+0x1ad/0x200 [ 35.754142] do_syscall_64+0x4a3/0x640 [ 35.758005] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.763169] RIP: 0033:0x7fe623df2d37 [ 35.767024] RSP: 002b:00007ffdcf7e91b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 35.774716] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe623df2d37 [ 35.781965] RDX: 00007ffdcf7e927a RSI: 000000000000000a RDI: 00007ffdcf7e9270 [ 35.789216] RBP: 00007ffdcf7e9270 R08: 00000000ffffffff R09: 00007ffdcf7e9050 [ 35.796457] R10: 00005555559bc683 R11: 0000000000000206 R12: 00007ffdcf7ea2e0 [ 35.803698] R13: 00005555559bc5f0 R14: 00007ffdcf7e91e0 R15: 0000000000000039 [ 35.811027] 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 [ 35.830088] RIP: lbmStartIO+0x14a/0x490 RSP: ffff8880b3297af8 [ 35.837588] ---[ end trace 9baa453db0994b7b ]--- [ 35.842339] Kernel panic - not syncing: Fatal exception [ 35.847741] Kernel Offset: disabled [ 35.851349] Rebooting in 86400 seconds..