[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.32' (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: [ 39.185194] kasan: CONFIG_KASAN_INLINE enabled [ 39.189945] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.204472] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.210715] CPU: 0 PID: 8084 Comm: syz-executor307 Not tainted 4.19.211-syzkaller #0 [ 39.218572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 39.227913] RIP: 0010:lbmStartIO+0x12b/0x480 [ 39.232297] 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 [ 39.251175] RSP: 0018:ffff8880b169fa70 EFLAGS: 00010202 [ 39.256515] RAX: dffffc0000000000 RBX: ffff8880afb0d400 RCX: 0000000000000003 [ 39.263758] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 39.271004] RBP: ffff88809afa4200 R08: 0000000000000001 R09: 0000000000000000 [ 39.278250] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880952664c0 [ 39.285496] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 39.292753] FS: 00005555560a0300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.300951] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.306806] CR2: 000055aada9a6188 CR3: 00000000b41ef000 CR4: 00000000003406f0 [ 39.314057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.321307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.328557] Call Trace: [ 39.331134] lbmWrite+0x27b/0x3a0 [ 39.334569] lmNextPage.isra.0+0x285/0x740 [ 39.338779] lmWriteRecord+0x94a/0xee0 [ 39.342643] ? mark_held_locks+0xa6/0xf0 [ 39.346688] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 39.351776] lmLogSync+0x154/0x6e0 [ 39.355292] ? lmWriteRecord+0xee0/0xee0 [ 39.359331] ? dqput+0x30/0x30 [ 39.362502] jfs_syncpt+0x78/0x90 [ 39.365930] jfs_sync_fs+0x80/0xa0 [ 39.369446] ? jfs_statfs+0x5a0/0x5a0 [ 39.373221] sync_filesystem+0x105/0x250 [ 39.377284] generic_shutdown_super+0x70/0x370 [ 39.381842] kill_block_super+0x97/0xf0 [ 39.385799] deactivate_locked_super+0x94/0x160 [ 39.390442] deactivate_super+0x174/0x1a0 [ 39.394566] ? deactivate_locked_super+0x160/0x160 [ 39.399470] ? dput+0x31/0x640 [ 39.402653] cleanup_mnt+0x1a8/0x290 [ 39.406435] task_work_run+0x148/0x1c0 [ 39.410302] exit_to_usermode_loop+0x251/0x2a0 [ 39.414859] do_syscall_64+0x538/0x620 [ 39.418724] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.423891] RIP: 0033:0x7f1599409cf7 [ 39.427580] 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 [ 39.446468] RSP: 002b:00007ffd02416528 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 39.454156] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1599409cf7 [ 39.461404] RDX: 00007ffd024165ea RSI: 000000000000000a RDI: 00007ffd024165e0 [ 39.468650] RBP: 00007ffd024165e0 R08: 00000000ffffffff R09: 00007ffd024163c0 [ 39.475898] R10: 00005555560a1683 R11: 0000000000000206 R12: 00007ffd02417650 [ 39.483155] R13: 00005555560a15f0 R14: 00007ffd02416550 R15: 0000000000000039 [ 39.490413] Modules linked in: [ 39.495277] ---[ end trace 899d1132e1902dd3 ]--- [ 39.500040] RIP: 0010:lbmStartIO+0x12b/0x480 [ 39.504704] 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 [ 39.523729] RSP: 0018:ffff8880b169fa70 EFLAGS: 00010202 [ 39.529076] RAX: dffffc0000000000 RBX: ffff8880afb0d400 RCX: 0000000000000003 [ 39.536440] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 39.543815] RBP: ffff88809afa4200 R08: 0000000000000001 R09: 0000000000000000 [ 39.551076] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880952664c0 [ 39.558482] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 39.565859] FS: 00005555560a0300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.574169] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.580040] CR2: 000055aadaa7fd27 CR3: 00000000b41ef000 CR4: 00000000003406f0 [ 39.587430] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.594787] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.602159] Kernel panic - not syncing: Fatal exception [ 39.607672] Kernel Offset: disabled [ 39.611283] Rebooting in 86400 seconds..