[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.67' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 155.948633] JFS: discard option not supported on device [ 156.066352] JFS: discard option not supported on device executing program executing program [ 156.232966] JFS: discard option not supported on device [ 156.335756] JFS: discard option not supported on device executing program executing program [ 156.499048] JFS: discard option not supported on device executing program [ 156.634854] JFS: discard option not supported on device executing program [ 156.748806] JFS: discard option not supported on device [ 156.863480] JFS: discard option not supported on device executing program executing program [ 157.023553] JFS: discard option not supported on device executing program [ 157.155394] JFS: discard option not supported on device executing program [ 157.281351] JFS: discard option not supported on device [ 157.376431] JFS: discard option not supported on device executing program executing program [ 157.547893] JFS: discard option not supported on device [ 157.655127] JFS: discard option not supported on device executing program executing program [ 157.829844] JFS: discard option not supported on device [ 157.936259] JFS: discard option not supported on device executing program executing program [ 158.083752] JFS: discard option not supported on device [ 158.185071] JFS: discard option not supported on device executing program executing program [ 158.347904] JFS: discard option not supported on device [ 158.459407] JFS: discard option not supported on device executing program [ 158.624207] JFS: discard option not supported on device executing program executing program [ 158.793159] JFS: discard option not supported on device [ 158.895273] JFS: discard option not supported on device executing program executing program [ 159.059200] JFS: discard option not supported on device [ 159.174340] JFS: discard option not supported on device executing program [ 159.324194] JFS: discard option not supported on device executing program [ 159.482513] JFS: discard option not supported on device executing program executing program [ 159.652515] JFS: discard option not supported on device executing program [ 159.760569] JFS: discard option not supported on device executing program [ 159.867244] JFS: discard option not supported on device executing program [ 159.970331] JFS: discard option not supported on device [ 160.080737] JFS: discard option not supported on device executing program [ 160.243020] JFS: discard option not supported on device executing program executing program [ 160.392046] JFS: discard option not supported on device [ 160.516405] JFS: discard option not supported on device executing program executing program [ 160.675651] JFS: discard option not supported on device executing program [ 160.786881] JFS: discard option not supported on device [ 160.899033] JFS: discard option not supported on device executing program [ 161.056014] JFS: discard option not supported on device executing program executing program [ 161.212821] JFS: discard option not supported on device [ 161.304976] JFS: discard option not supported on device executing program executing program [ 161.468360] JFS: discard option not supported on device executing program [ 161.579925] JFS: discard option not supported on device executing program [ 161.697238] JFS: discard option not supported on device executing program [ 161.807357] JFS: discard option not supported on device [ 161.919208] JFS: discard option not supported on device executing program [ 162.083657] JFS: discard option not supported on device executing program executing program [ 162.243103] JFS: discard option not supported on device [ 162.354588] JFS: discard option not supported on device executing program [ 162.512256] JFS: discard option not supported on device executing program [ 162.665324] JFS: discard option not supported on device executing program [ 162.824563] JFS: discard option not supported on device executing program [ 162.993156] JFS: discard option not supported on device executing program executing program [ 163.152642] JFS: discard option not supported on device [ 163.247425] JFS: discard option not supported on device executing program executing program [ 163.402028] JFS: discard option not supported on device [ 163.494940] JFS: discard option not supported on device [ 163.523594] kasan: CONFIG_KASAN_INLINE enabled [ 163.528338] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 163.541851] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 163.548107] CPU: 1 PID: 8100 Comm: syz-executor324 Not tainted 4.19.211-syzkaller #0 [ 163.556058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 163.565424] RIP: 0010:lbmStartIO+0x12b/0x480 [ 163.569812] 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 [ 163.588806] RSP: 0018:ffff8880b1677a70 EFLAGS: 00010202 [ 163.594154] RAX: dffffc0000000000 RBX: ffff8880a9856d00 RCX: 0000000000000003 [ 163.601422] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 163.608675] RBP: ffff8880a2110a80 R08: 0000000000000001 R09: 0000000000000000 [ 163.615925] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b0ce76c0 [ 163.623191] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 163.630461] FS: 0000555556c40300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 163.638669] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 163.644552] CR2: 000056152bd17870 CR3: 00000000a8bd2000 CR4: 00000000003406e0 [ 163.652024] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 163.659285] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 163.666538] Call Trace: [ 163.669114] lbmWrite+0x27b/0x3a0 [ 163.672549] lmNextPage.isra.0+0x285/0x740 [ 163.676777] lmWriteRecord+0x94a/0xee0 [ 163.680734] ? mark_held_locks+0xa6/0xf0 [ 163.684797] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 163.689881] lmLogSync+0x154/0x6e0 [ 163.693403] ? lmWriteRecord+0xee0/0xee0 [ 163.697448] ? dqput+0x30/0x30 [ 163.700621] jfs_syncpt+0x78/0x90 [ 163.704056] jfs_sync_fs+0x80/0xa0 [ 163.707582] ? jfs_statfs+0x5a0/0x5a0 [ 163.711363] sync_filesystem+0x105/0x250 [ 163.715408] generic_shutdown_super+0x70/0x370 [ 163.719971] kill_block_super+0x97/0xf0 [ 163.723926] deactivate_locked_super+0x94/0x160 [ 163.728577] deactivate_super+0x174/0x1a0 [ 163.732806] ? deactivate_locked_super+0x160/0x160 [ 163.737734] ? dput+0x31/0x640 [ 163.740916] cleanup_mnt+0x1a8/0x290 [ 163.744624] task_work_run+0x148/0x1c0 [ 163.748498] exit_to_usermode_loop+0x251/0x2a0 [ 163.753086] do_syscall_64+0x538/0x620 [ 163.756980] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 163.762223] RIP: 0033:0x7fa4f2cf4de7 [ 163.765918] 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 [ 163.784796] RSP: 002b:00007ffef28d4c08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 163.792497] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa4f2cf4de7 [ 163.799747] RDX: 00007ffef28d4cca RSI: 000000000000000a RDI: 00007ffef28d4cc0 [ 163.806997] RBP: 00007ffef28d4cc0 R08: 00000000ffffffff R09: 00007ffef28d4aa0 [ 163.814262] R10: 0000555556c41683 R11: 0000000000000202 R12: 00007ffef28d5d30 [ 163.821512] R13: 0000555556c415f0 R14: 00007ffef28d4c30 R15: 0000000000000039 [ 163.828782] Modules linked in: [ 163.832163] ---[ end trace 19c32bd4dbc94efa ]--- [ 163.836964] RIP: 0010:lbmStartIO+0x12b/0x480 [ 163.841372] 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 [ 163.862332] RSP: 0018:ffff8880b1677a70 EFLAGS: 00010202 [ 163.867791] RAX: dffffc0000000000 RBX: ffff8880a9856d00 RCX: 0000000000000003 [ 163.875124] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 163.882381] RBP: ffff8880a2110a80 R08: 0000000000000001 R09: 0000000000000000 [ 163.889735] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b0ce76c0 [ 163.897117] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 163.904421] FS: 0000555556c40300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 163.912706] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 163.918596] CR2: 000056152bd17870 CR3: 00000000a8bd2000 CR4: 00000000003406e0 [ 163.925909] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 163.933247] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 163.940525] Kernel panic - not syncing: Fatal exception [ 163.945944] Kernel Offset: disabled [ 163.949571] Rebooting in 86400 seconds..