[ 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 '10.128.0.71' (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: [ 174.117032] kasan: CONFIG_KASAN_INLINE enabled [ 174.121871] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 174.138293] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 174.144735] CPU: 1 PID: 8135 Comm: syz-executor253 Not tainted 4.19.211-syzkaller #0 [ 174.152770] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 174.162137] RIP: 0010:lbmStartIO+0x12b/0x480 [ 174.166534] 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 [ 174.185450] RSP: 0018:ffff888094e17a70 EFLAGS: 00010202 [ 174.190799] RAX: dffffc0000000000 RBX: ffff8880aa34c700 RCX: 0000000000000003 [ 174.198051] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 174.205300] RBP: ffff8880a98df180 R08: 0000000000000001 R09: 0000000000000000 [ 174.212550] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b13d9680 [ 174.219800] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 174.227055] FS: 000055555670b300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 174.235266] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 174.241134] CR2: 0000562f5dd66000 CR3: 00000000b4da4000 CR4: 00000000003406e0 [ 174.248406] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 174.255657] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 174.262927] Call Trace: [ 174.265499] lbmWrite+0x27b/0x3a0 [ 174.268939] lmNextPage.isra.0+0x285/0x740 [ 174.273158] lmWriteRecord+0x94a/0xee0 [ 174.277025] ? mark_held_locks+0xa6/0xf0 [ 174.281069] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 174.286157] lmLogSync+0x154/0x6e0 [ 174.289676] ? lmWriteRecord+0xee0/0xee0 [ 174.293718] ? dqput+0x30/0x30 [ 174.296891] jfs_syncpt+0x78/0x90 [ 174.300322] jfs_sync_fs+0x80/0xa0 [ 174.303851] ? jfs_statfs+0x5a0/0x5a0 [ 174.307628] sync_filesystem+0x105/0x250 [ 174.311672] generic_shutdown_super+0x70/0x370 [ 174.316235] kill_block_super+0x97/0xf0 [ 174.320190] deactivate_locked_super+0x94/0x160 [ 174.324840] deactivate_super+0x174/0x1a0 [ 174.328970] ? deactivate_locked_super+0x160/0x160 [ 174.333879] ? dput+0x31/0x640 [ 174.337051] cleanup_mnt+0x1a8/0x290 [ 174.340766] task_work_run+0x148/0x1c0 [ 174.344633] exit_to_usermode_loop+0x251/0x2a0 [ 174.349195] do_syscall_64+0x538/0x620 [ 174.353063] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.358229] RIP: 0033:0x7f0bb27eace7 [ 174.361922] 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 [ 174.380804] RSP: 002b:00007ffcf17e4f48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 174.388493] RAX: 0000000000000000 RBX: 000000000002a7da RCX: 00007f0bb27eace7 [ 174.395742] RDX: 00007ffcf17e500a RSI: 000000000000000a RDI: 00007ffcf17e5000 [ 174.402989] RBP: 00007ffcf17e5000 R08: 00000000ffffffff R09: 00007ffcf17e4de0 [ 174.410238] R10: 000055555670c633 R11: 0000000000000206 R12: 00007ffcf17e6070 [ 174.417484] R13: 000055555670c5f0 R14: 00007ffcf17e4f70 R15: 0000000000000039 [ 174.424734] Modules linked in: [ 174.428457] ---[ end trace 8f8fcf236051d273 ]--- [ 174.433224] RIP: 0010:lbmStartIO+0x12b/0x480 [ 174.438065] 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 [ 174.457202] RSP: 0018:ffff888094e17a70 EFLAGS: 00010202 [ 174.462558] RAX: dffffc0000000000 RBX: ffff8880aa34c700 RCX: 0000000000000003 [ 174.469848] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 174.477152] RBP: ffff8880a98df180 R08: 0000000000000001 R09: 0000000000000000 [ 174.484409] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b13d9680 [ 174.491719] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 174.499023] FS: 000055555670b300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 174.507296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 174.513163] CR2: 0000562f5dd66000 CR3: 00000000b4da4000 CR4: 00000000003406e0 [ 174.520463] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 174.527863] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 174.535122] Kernel panic - not syncing: Fatal exception [ 174.540640] Kernel Offset: disabled [ 174.544250] Rebooting in 86400 seconds..