[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ 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 '10.128.0.241' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.514556] JFS: discard option not supported on device executing program [ 46.667633] JFS: discard option not supported on device executing program executing program [ 46.816796] JFS: discard option not supported on device executing program [ 46.903374] JFS: discard option not supported on device executing program [ 46.997449] JFS: discard option not supported on device executing program [ 47.078787] JFS: discard option not supported on device [ 47.157595] JFS: discard option not supported on device executing program [ 47.307699] JFS: discard option not supported on device executing program [ 47.435565] JFS: discard option not supported on device executing program [ 47.585276] JFS: discard option not supported on device executing program executing program [ 47.715602] JFS: discard option not supported on device executing program [ 47.802899] JFS: discard option not supported on device executing program [ 47.894710] JFS: discard option not supported on device [ 47.980608] JFS: discard option not supported on device executing program executing program [ 48.116208] JFS: discard option not supported on device executing program [ 48.202673] JFS: discard option not supported on device executing program [ 48.295812] JFS: discard option not supported on device [ 48.369704] JFS: discard option not supported on device executing program executing program [ 48.508760] JFS: discard option not supported on device [ 48.597570] JFS: discard option not supported on device executing program [ 48.735965] JFS: discard option not supported on device executing program executing program [ 48.886023] JFS: discard option not supported on device executing program [ 48.962080] JFS: discard option not supported on device executing program [ 49.056617] JFS: discard option not supported on device executing program [ 49.133190] JFS: discard option not supported on device executing program [ 49.231496] JFS: discard option not supported on device executing program [ 49.312711] JFS: discard option not supported on device executing program [ 49.386937] JFS: discard option not supported on device executing program [ 49.468043] JFS: discard option not supported on device [ 49.545153] JFS: discard option not supported on device executing program executing program [ 49.670810] JFS: discard option not supported on device [ 49.742704] JFS: discard option not supported on device executing program executing program [ 49.882743] JFS: discard option not supported on device [ 49.966552] JFS: discard option not supported on device executing program [ 50.094949] JFS: discard option not supported on device executing program executing program [ 50.234041] JFS: discard option not supported on device executing program [ 50.325611] JFS: discard option not supported on device executing program [ 50.400993] JFS: discard option not supported on device [ 50.490624] JFS: discard option not supported on device executing program executing program [ 50.634514] JFS: discard option not supported on device executing program [ 50.731640] JFS: discard option not supported on device [ 50.831274] JFS: discard option not supported on device executing program executing program [ 50.968104] JFS: discard option not supported on device executing program [ 51.044138] JFS: discard option not supported on device executing program [ 51.122958] JFS: discard option not supported on device [ 51.212597] JFS: discard option not supported on device executing program [ 51.345851] JFS: discard option not supported on device executing program executing program [ 51.494149] JFS: discard option not supported on device [ 51.594258] JFS: discard option not supported on device executing program [ 51.730068] JFS: discard option not supported on device executing program executing program [ 51.884375] JFS: discard option not supported on device executing program [ 51.971090] JFS: discard option not supported on device executing program [ 52.045906] JFS: discard option not supported on device executing program [ 52.122309] JFS: discard option not supported on device [ 52.219601] JFS: discard option not supported on device executing program executing program [ 52.349587] JFS: discard option not supported on device [ 52.441151] JFS: discard option not supported on device [ 52.455658] kasan: CONFIG_KASAN_INLINE enabled [ 52.460507] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.467868] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.474087] Modules linked in: [ 52.477273] CPU: 0 PID: 7964 Comm: syz-executor247 Not tainted 4.14.302-syzkaller #0 [ 52.485124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 52.494453] task: ffff8880b359e500 task.stack: ffff888096190000 [ 52.500486] RIP: 0010:lbmStartIO+0x14a/0x490 [ 52.504863] RSP: 0018:ffff888096197af8 EFLAGS: 00010202 [ 52.510199] RAX: dffffc0000000000 RBX: ffff8880ab567100 RCX: 0000000000000003 [ 52.517440] RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0 [ 52.524681] RBP: ffff88809fe893c0 R08: 0000000000000001 R09: ffff88809fe893c0 [ 52.531923] R10: ffff88809fe89447 R11: 0000000000000000 R12: ffff888098ace4c0 [ 52.539184] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.546612] FS: 0000555556f4e300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 52.554807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.560664] CR2: 0000555556f57628 CR3: 00000000a4a5a000 CR4: 00000000003406f0 [ 52.567913] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.575169] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.582433] Call Trace: [ 52.585012] lbmWrite+0x254/0x380 [ 52.588465] lmNextPage.isra.0+0x263/0x700 [ 52.592721] lmWriteRecord+0x8b2/0xe30 [ 52.596592] ? mark_held_locks+0xa6/0xf0 [ 52.600638] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 52.605823] lmLogSync+0x126/0x660 [ 52.609344] ? lmWriteRecord+0xe30/0xe30 [ 52.613380] ? dqput+0x30/0x30 [ 52.616551] jfs_syncpt+0x66/0x70 [ 52.620097] jfs_sync_fs+0x80/0xa0 [ 52.623624] ? jfs_statfs+0x510/0x510 [ 52.627430] sync_filesystem+0xe2/0x230 [ 52.631385] generic_shutdown_super+0x70/0x370 [ 52.635951] kill_block_super+0x95/0xe0 [ 52.639900] deactivate_locked_super+0x6c/0xd0 [ 52.644456] deactivate_super+0x7f/0xa0 [ 52.648404] cleanup_mnt+0x186/0x2c0 [ 52.652104] task_work_run+0x11f/0x190 [ 52.655979] exit_to_usermode_loop+0x1ad/0x200 [ 52.660546] do_syscall_64+0x4a3/0x640 [ 52.664415] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.669578] RIP: 0033:0x7fd3c694cd87 [ 52.673262] RSP: 002b:00007ffe57e45ae8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 52.681031] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd3c694cd87 [ 52.688273] RDX: 00007ffe57e45baa RSI: 000000000000000a RDI: 00007ffe57e45ba0 [ 52.695516] RBP: 00007ffe57e45ba0 R08: 00000000ffffffff R09: 00007ffe57e45980 [ 52.702758] R10: 0000555556f4f683 R11: 0000000000000206 R12: 00007ffe57e46c10 [ 52.709997] R13: 0000555556f4f5f0 R14: 00007ffe57e45b10 R15: 0000000000000039 [ 52.717241] 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 [ 52.736313] RIP: lbmStartIO+0x14a/0x490 RSP: ffff888096197af8 [ 52.744382] ---[ end trace da803a512e6da6ee ]--- [ 52.749146] Kernel panic - not syncing: Fatal exception [ 52.754655] Kernel Offset: disabled [ 52.758279] Rebooting in 86400 seconds..