[ 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 '10.128.0.195' (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: [ 55.688225] kasan: CONFIG_KASAN_INLINE enabled [ 55.692975] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.712864] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 55.719099] CPU: 0 PID: 8089 Comm: syz-executor273 Not tainted 4.19.211-syzkaller #0 [ 55.726958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.736297] RIP: 0010:lbmStartIO+0x12b/0x480 [ 55.740685] 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 [ 55.759654] RSP: 0018:ffff888095057a70 EFLAGS: 00010202 [ 55.764998] RAX: dffffc0000000000 RBX: ffff8880a99ed600 RCX: 0000000000000003 [ 55.772248] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 55.779496] RBP: ffff8880ab1dd840 R08: 0000000000000001 R09: 0000000000000000 [ 55.786748] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809781db00 [ 55.793994] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 55.801244] FS: 0000555555a00300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 55.809445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.815327] CR2: 00007ff1e961a168 CR3: 00000000a8296000 CR4: 00000000003406f0 [ 55.822578] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.829840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.837095] Call Trace: [ 55.839674] lbmWrite+0x27b/0x3a0 [ 55.843110] lmNextPage.isra.0+0x285/0x740 [ 55.847323] lmWriteRecord+0x94a/0xee0 [ 55.851191] ? mark_held_locks+0xa6/0xf0 [ 55.855244] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 55.860347] lmLogSync+0x154/0x6e0 [ 55.864005] ? lmWriteRecord+0xee0/0xee0 [ 55.868138] ? dqput+0x30/0x30 [ 55.871313] jfs_syncpt+0x78/0x90 [ 55.874744] jfs_sync_fs+0x80/0xa0 [ 55.878410] ? jfs_statfs+0x5a0/0x5a0 [ 55.882203] sync_filesystem+0x105/0x250 [ 55.886259] generic_shutdown_super+0x70/0x370 [ 55.890820] kill_block_super+0x97/0xf0 [ 55.894784] deactivate_locked_super+0x94/0x160 [ 55.899438] deactivate_super+0x174/0x1a0 [ 55.903578] ? deactivate_locked_super+0x160/0x160 [ 55.908598] ? dput+0x31/0x640 [ 55.911778] cleanup_mnt+0x1a8/0x290 [ 55.915481] task_work_run+0x148/0x1c0 [ 55.919420] exit_to_usermode_loop+0x251/0x2a0 [ 55.924009] do_syscall_64+0x538/0x620 [ 55.928027] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.933209] RIP: 0033:0x7f5f819facc7 [ 55.936906] 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 [ 55.955796] RSP: 002b:00007ffc50645b18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 55.963486] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5f819facc7 [ 55.970737] RDX: 00007ffc50645bda RSI: 000000000000000a RDI: 00007ffc50645bd0 [ 55.977987] RBP: 00007ffc50645bd0 R08: 00000000ffffffff R09: 00007ffc506459b0 [ 55.985416] R10: 0000555555a01683 R11: 0000000000000206 R12: 00007ffc50646c40 [ 55.992669] R13: 0000555555a015f0 R14: 00007ffc50645b40 R15: 0000000000000039 [ 55.999921] Modules linked in: [ 56.020167] ---[ end trace 7704ca9f7b05c1d7 ]--- [ 56.024972] RIP: 0010:lbmStartIO+0x12b/0x480 [ 56.030268] 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 [ 56.049892] RSP: 0018:ffff888095057a70 EFLAGS: 00010202 [ 56.056281] RAX: dffffc0000000000 RBX: ffff8880a99ed600 RCX: 0000000000000003 [ 56.063649] RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 [ 56.071031] RBP: ffff8880ab1dd840 R08: 0000000000000001 R09: 0000000000000000 [ 56.078369] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809781db00 [ 56.085749] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 56.093124] FS: 0000555555a00300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 56.101399] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.107322] CR2: 00005650b04bc160 CR3: 00000000a8296000 CR4: 00000000003406e0 [ 56.114586] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.121957] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.129265] Kernel panic - not syncing: Fatal exception [ 56.134699] Kernel Offset: disabled [ 56.138314] Rebooting in 86400 seconds..