[ 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 '10.128.0.39' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 436.720335] JFS: discard option not supported on device executing program executing program [ 436.805445] JFS: discard option not supported on device [ 436.850869] JFS: discard option not supported on device executing program executing program [ 436.911280] JFS: discard option not supported on device executing program executing program [ 436.984945] JFS: discard option not supported on device executing program [ 437.051829] JFS: discard option not supported on device [ 437.090977] JFS: discard option not supported on device executing program [ 437.161007] JFS: discard option not supported on device executing program executing program [ 437.232871] JFS: discard option not supported on device executing program [ 437.304803] JFS: discard option not supported on device [ 437.360472] JFS: discard option not supported on device executing program [ 437.400687] JFS: discard option not supported on device executing program executing program [ 437.461872] JFS: discard option not supported on device [ 437.530964] JFS: discard option not supported on device executing program [ 437.591516] JFS: discard option not supported on device executing program [ 437.670149] JFS: discard option not supported on device executing program [ 437.745799] JFS: discard option not supported on device executing program [ 437.814606] JFS: discard option not supported on device executing program executing program [ 437.862437] JFS: discard option not supported on device executing program executing program [ 437.930330] JFS: discard option not supported on device executing program [ 438.000493] JFS: discard option not supported on device executing program [ 438.060536] JFS: discard option not supported on device [ 438.120476] JFS: discard option not supported on device executing program [ 438.181451] JFS: discard option not supported on device executing program [ 438.252098] JFS: discard option not supported on device executing program [ 438.324471] JFS: discard option not supported on device executing program [ 438.376291] JFS: discard option not supported on device executing program [ 438.444213] JFS: discard option not supported on device executing program [ 438.501669] JFS: discard option not supported on device executing program [ 438.574109] JFS: discard option not supported on device executing program [ 438.629998] JFS: discard option not supported on device executing program executing program [ 438.714603] JFS: discard option not supported on device executing program [ 438.761709] JFS: discard option not supported on device executing program [ 438.821001] JFS: discard option not supported on device [ 438.881366] JFS: discard option not supported on device executing program [ 438.945928] JFS: discard option not supported on device executing program [ 439.034749] JFS: discard option not supported on device executing program executing program [ 439.103781] JFS: discard option not supported on device executing program [ 439.172362] JFS: discard option not supported on device executing program [ 439.231703] JFS: discard option not supported on device executing program [ 439.292338] JFS: discard option not supported on device [ 439.360842] JFS: discard option not supported on device executing program executing program [ 439.430437] JFS: discard option not supported on device [ 439.496606] JFS: discard option not supported on device executing program executing program [ 439.550583] JFS: discard option not supported on device [ 439.613749] JFS: discard option not supported on device executing program executing program [ 439.687288] JFS: discard option not supported on device executing program [ 439.752238] JFS: discard option not supported on device executing program [ 439.808281] JFS: discard option not supported on device [ 439.878278] JFS: discard option not supported on device executing program [ 439.930909] JFS: discard option not supported on device executing program [ 439.998973] JFS: discard option not supported on device executing program executing program [ 440.084158] JFS: discard option not supported on device [ 440.120543] JFS: discard option not supported on device executing program [ 440.159008] JFS: discard option not supported on device executing program [ 440.233662] JFS: discard option not supported on device [ 440.280460] JFS: discard option not supported on device [ 440.300440] kasan: CONFIG_KASAN_INLINE enabled [ 440.305212] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 440.313961] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 440.320198] Modules linked in: [ 440.323385] CPU: 0 PID: 7999 Comm: syz-executor181 Not tainted 4.14.295-syzkaller #0 [ 440.331242] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 440.340571] task: ffff8880b2cf4440 task.stack: ffff88808c8f8000 [ 440.346607] RIP: 0010:lbmStartIO+0x14a/0x490 [ 440.350984] RSP: 0018:ffff88808c8ffaf8 EFLAGS: 00010202 [ 440.356319] RAX: dffffc0000000000 RBX: ffff8880aa280400 RCX: 0000000000000003 [ 440.363646] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 440.370897] RBP: ffff8880a4313800 R08: 0000000000000001 R09: ffff8880a4313800 [ 440.378143] R10: ffff8880a4313887 R11: 0000000000000000 R12: ffff8880b4eb6480 [ 440.385391] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 440.392731] FS: 0000555555e62300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 440.400933] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 440.406787] CR2: 00007f2e0144c000 CR3: 000000009eba4000 CR4: 00000000003406f0 [ 440.414033] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 440.421274] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 440.428522] Call Trace: [ 440.431098] lbmWrite+0x254/0x380 [ 440.434530] lmNextPage.isra.0+0x263/0x700 [ 440.438754] lmWriteRecord+0x8b2/0xe30 [ 440.442621] ? mark_held_locks+0xa6/0xf0 [ 440.446661] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 440.451744] lmLogSync+0x126/0x660 [ 440.455262] ? lmWriteRecord+0xe30/0xe30 [ 440.459299] ? dqput+0x30/0x30 [ 440.462469] jfs_syncpt+0x66/0x70 [ 440.465898] jfs_sync_fs+0x80/0xa0 [ 440.469439] ? jfs_statfs+0x510/0x510 [ 440.473212] sync_filesystem+0xe2/0x230 [ 440.477163] generic_shutdown_super+0x70/0x370 [ 440.481719] kill_block_super+0x95/0xe0 [ 440.485668] deactivate_locked_super+0x6c/0xd0 [ 440.490220] deactivate_super+0x7f/0xa0 [ 440.494167] cleanup_mnt+0x186/0x2c0 [ 440.497853] task_work_run+0x11f/0x190 [ 440.501733] exit_to_usermode_loop+0x1ad/0x200 [ 440.506289] do_syscall_64+0x4a3/0x640 [ 440.510155] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 440.515329] RIP: 0033:0x7fca1d489847 [ 440.519016] RSP: 002b:00007ffea7eafda8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 440.526695] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fca1d489847 [ 440.533940] RDX: 00007ffea7eafe6a RSI: 000000000000000a RDI: 00007ffea7eafe60 [ 440.541192] RBP: 00007ffea7eafe60 R08: 00000000ffffffff R09: 00007ffea7eafc40 [ 440.548460] R10: 0000555555e63683 R11: 0000000000000202 R12: 00007ffea7eb0ed0 [ 440.555706] R13: 0000555555e635f0 R14: 00007ffea7eafdd0 R15: 000000000000003b [ 440.562952] 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 [ 440.582012] RIP: lbmStartIO+0x14a/0x490 RSP: ffff88808c8ffaf8 [ 440.588256] ---[ end trace 1b64f7aaac05f463 ]--- [ 440.593369] Kernel panic - not syncing: Fatal exception [ 440.598884] Kernel Offset: disabled [ 440.602494] Rebooting in 86400 seconds..