[ 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 '10.128.0.160' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 505.557127] JFS: discard option not supported on device executing program [ 505.632799] JFS: discard option not supported on device executing program [ 505.713318] JFS: discard option not supported on device executing program [ 505.781819] JFS: discard option not supported on device executing program [ 505.843955] JFS: discard option not supported on device [ 505.904430] JFS: discard option not supported on device executing program executing program executing program [ 505.987595] JFS: discard option not supported on device executing program [ 506.055935] JFS: discard option not supported on device executing program [ 506.114221] JFS: discard option not supported on device executing program [ 506.174405] JFS: discard option not supported on device executing program [ 506.236208] JFS: discard option not supported on device executing program [ 506.293794] JFS: discard option not supported on device executing program [ 506.354514] JFS: discard option not supported on device executing program [ 506.415160] JFS: discard option not supported on device executing program [ 506.473947] JFS: discard option not supported on device executing program [ 506.523727] JFS: discard option not supported on device [ 506.573693] JFS: discard option not supported on device executing program executing program [ 506.643230] JFS: discard option not supported on device executing program [ 506.698633] JFS: discard option not supported on device executing program [ 506.753417] JFS: discard option not supported on device executing program [ 506.803769] JFS: discard option not supported on device executing program [ 506.863703] JFS: discard option not supported on device executing program [ 506.904147] JFS: discard option not supported on device executing program [ 506.953905] JFS: discard option not supported on device executing program [ 507.022472] JFS: discard option not supported on device executing program [ 507.074220] JFS: discard option not supported on device executing program [ 507.124841] JFS: discard option not supported on device executing program [ 507.173189] JFS: discard option not supported on device executing program [ 507.233713] JFS: discard option not supported on device executing program [ 507.287358] JFS: discard option not supported on device executing program [ 507.353527] JFS: discard option not supported on device executing program [ 507.403774] JFS: discard option not supported on device executing program executing program [ 507.489503] JFS: discard option not supported on device executing program [ 507.555430] JFS: discard option not supported on device executing program [ 507.625241] JFS: discard option not supported on device executing program [ 507.698637] JFS: discard option not supported on device executing program [ 507.743443] JFS: discard option not supported on device executing program [ 507.803229] JFS: discard option not supported on device executing program [ 507.873757] JFS: discard option not supported on device executing program [ 507.923453] JFS: discard option not supported on device executing program [ 507.985915] JFS: discard option not supported on device executing program [ 508.033458] JFS: discard option not supported on device executing program [ 508.102745] JFS: discard option not supported on device executing program [ 508.158722] JFS: discard option not supported on device executing program [ 508.225051] JFS: discard option not supported on device executing program [ 508.293483] JFS: discard option not supported on device executing program [ 508.364316] JFS: discard option not supported on device executing program [ 508.423955] JFS: discard option not supported on device executing program [ 508.473453] JFS: discard option not supported on device executing program [ 508.523038] JFS: discard option not supported on device executing program [ 508.583119] JFS: discard option not supported on device executing program [ 508.662060] JFS: discard option not supported on device executing program executing program [ 508.756515] JFS: discard option not supported on device executing program [ 508.813029] JFS: discard option not supported on device executing program [ 508.863705] JFS: discard option not supported on device executing program [ 508.913511] JFS: discard option not supported on device [ 508.974527] JFS: discard option not supported on device [ 508.991691] kasan: CONFIG_KASAN_INLINE enabled [ 508.996440] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 509.009487] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 509.015739] CPU: 0 PID: 8091 Comm: syz-executor399 Not tainted 4.19.211-syzkaller #0 [ 509.023614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 509.032976] RIP: 0010:lbmStartIO+0x12b/0x480 [ 509.037391] 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 [ 509.056286] RSP: 0018:ffff8880aad7fa70 EFLAGS: 00010202 [ 509.061718] RAX: dffffc0000000000 RBX: ffff8880a94afb00 RCX: 0000000000000003 [ 509.068974] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 509.076232] RBP: ffff8880a2964980 R08: 0000000000000001 R09: 0000000000000000 [ 509.083576] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888094e85b00 [ 509.090824] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 509.098077] FS: 0000555557547300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 509.106287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 509.112149] CR2: 0000555557550628 CR3: 00000000b453f000 CR4: 00000000003406f0 [ 509.119404] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 509.126660] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 509.133909] Call Trace: [ 509.136484] lbmWrite+0x27b/0x3a0 [ 509.139922] lmNextPage.isra.0+0x285/0x740 [ 509.144138] lmWriteRecord+0x94a/0xee0 [ 509.148006] ? mark_held_locks+0xa6/0xf0 [ 509.152051] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 509.157134] lmLogSync+0x154/0x6e0 [ 509.160659] ? lmWriteRecord+0xee0/0xee0 [ 509.164706] ? dqput+0x30/0x30 [ 509.167878] jfs_syncpt+0x78/0x90 [ 509.171316] jfs_sync_fs+0x80/0xa0 [ 509.174834] ? jfs_statfs+0x5a0/0x5a0 [ 509.178613] sync_filesystem+0x105/0x250 [ 509.182653] generic_shutdown_super+0x70/0x370 [ 509.187214] kill_block_super+0x97/0xf0 [ 509.191166] deactivate_locked_super+0x94/0x160 [ 509.195815] deactivate_super+0x174/0x1a0 [ 509.199944] ? deactivate_locked_super+0x160/0x160 [ 509.204854] ? dput+0x31/0x640 [ 509.208028] cleanup_mnt+0x1a8/0x290 [ 509.211736] task_work_run+0x148/0x1c0 [ 509.215610] exit_to_usermode_loop+0x251/0x2a0 [ 509.220263] do_syscall_64+0x538/0x620 [ 509.224138] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 509.229317] RIP: 0033:0x7f6e9f913847 [ 509.233014] 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 [ 509.252208] RSP: 002b:00007ffd73e3d148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 509.259899] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6e9f913847 [ 509.267239] RDX: 00007ffd73e3d20a RSI: 000000000000000a RDI: 00007ffd73e3d200 [ 509.274579] RBP: 00007ffd73e3d200 R08: 00000000ffffffff R09: 00007ffd73e3cfe0 [ 509.281836] R10: 0000555557548683 R11: 0000000000000206 R12: 00007ffd73e3e270 [ 509.289083] R13: 00005555575485f0 R14: 00007ffd73e3d170 R15: 000000000000003c [ 509.296342] Modules linked in: [ 509.300043] ---[ end trace 4007c25d8dd28777 ]--- [ 509.305319] RIP: 0010:lbmStartIO+0x12b/0x480 [ 509.309818] 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 [ 509.328780] RSP: 0018:ffff8880aad7fa70 EFLAGS: 00010202 [ 509.334369] RAX: dffffc0000000000 RBX: ffff8880a94afb00 RCX: 0000000000000003 [ 509.341677] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 509.349046] RBP: ffff8880a2964980 R08: 0000000000000001 R09: 0000000000000000 [ 509.356454] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888094e85b00 [ 509.363768] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 509.371076] FS: 0000555557547300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 509.379296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 509.385216] CR2: 0000555557550628 CR3: 00000000b453f000 CR4: 00000000003406f0 [ 509.392520] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 509.399779] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 509.407108] Kernel panic - not syncing: Fatal exception [ 509.412632] Kernel Offset: disabled [ 509.416244] Rebooting in 86400 seconds..