[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.93' (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: [ 38.703281] kasan: CONFIG_KASAN_INLINE enabled [ 38.717797] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.725524] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.731761] CPU: 0 PID: 8110 Comm: syz-executor149 Not tainted 4.19.211-syzkaller #0 [ 38.739719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 38.749063] RIP: 0010:lbmStartIO+0x12b/0x480 [ 38.753454] Code: c1 ea 03 80 3c 02 00 0f 85 f5 02 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 ef 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 67 [ 38.772348] RSP: 0018:ffff8880952afa70 EFLAGS: 00010202 [ 38.777702] RAX: dffffc0000000000 RBX: ffff8880a9f12b00 RCX: 0000000000000003 [ 38.784960] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 38.792225] RBP: ffff8880aa0f3840 R08: 0000000000000001 R09: 0000000000000000 [ 38.799480] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b2490d80 [ 38.806763] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 38.814026] FS: 00005555573bb300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 38.822233] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.828106] CR2: 00007ffe96259e08 CR3: 000000009c9fb000 CR4: 00000000003406f0 [ 38.835369] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.842629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.849880] Call Trace: [ 38.852461] lbmWrite+0x27b/0x3a0 [ 38.855903] lmNextPage.isra.0+0x285/0x740 [ 38.860120] lmWriteRecord+0x94a/0xee0 [ 38.863988] ? mark_held_locks+0xa6/0xf0 [ 38.868030] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 38.873125] lmLogSync+0x154/0x6e0 [ 38.876642] ? lmWriteRecord+0xee0/0xee0 [ 38.880707] ? dqput+0x30/0x30 [ 38.883879] jfs_syncpt+0x78/0x90 [ 38.887319] jfs_sync_fs+0x80/0xa0 [ 38.890840] ? jfs_statfs+0x5a0/0x5a0 [ 38.894618] sync_filesystem+0x105/0x250 [ 38.898659] generic_shutdown_super+0x70/0x370 [ 38.903220] kill_block_super+0x97/0xf0 [ 38.907173] deactivate_locked_super+0x94/0x160 [ 38.911820] deactivate_super+0x174/0x1a0 [ 38.915947] ? deactivate_locked_super+0x160/0x160 [ 38.920855] ? dput+0x31/0x640 [ 38.924026] cleanup_mnt+0x1a8/0x290 [ 38.927723] task_work_run+0x148/0x1c0 [ 38.931595] exit_to_usermode_loop+0x251/0x2a0 [ 38.936163] do_syscall_64+0x538/0x620 [ 38.940035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.945207] RIP: 0033:0x7f8006b30e37 [ 38.948904] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 38.967783] RSP: 002b:00007ffe9625a548 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 38.975478] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8006b30e37 [ 38.982728] RDX: 00007ffe9625a60a RSI: 000000000000000a RDI: 00007ffe9625a600 [ 38.989990] RBP: 00007ffe9625a600 R08: 00000000ffffffff R09: 00007ffe9625a3e0 [ 38.997248] R10: 00005555573bc683 R11: 0000000000000206 R12: 00007ffe9625b670 [ 39.004497] R13: 00005555573bc5f0 R14: 00007ffe9625a570 R15: 0000000000000039 [ 39.011749] Modules linked in: [ 39.018913] ---[ end trace 2743c082dda32d1a ]--- [ 39.023692] RIP: 0010:lbmStartIO+0x12b/0x480 [ 39.028501] Code: c1 ea 03 80 3c 02 00 0f 85 f5 02 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 ef 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 67 [ 39.047871] RSP: 0018:ffff8880952afa70 EFLAGS: 00010202 [ 39.053224] RAX: dffffc0000000000 RBX: ffff8880a9f12b00 RCX: 0000000000000003 [ 39.060530] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 39.067845] RBP: ffff8880aa0f3840 R08: 0000000000000001 R09: 0000000000000000 [ 39.075105] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b2490d80 [ 39.082413] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 39.089717] FS: 00005555573bb300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.097967] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.103850] CR2: 00007ffe96259e08 CR3: 000000009c9fb000 CR4: 00000000003406f0 [ 39.111136] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.118551] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.125822] Kernel panic - not syncing: Fatal exception [ 39.131430] Kernel Offset: disabled [ 39.135044] Rebooting in 86400 seconds..