[ 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 '10.128.10.1' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 926.735790] kasan: CONFIG_KASAN_INLINE enabled [ 926.749125] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 926.760653] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 926.766919] CPU: 1 PID: 8083 Comm: syz-executor184 Not tainted 4.19.211-syzkaller #0 [ 926.775150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 926.784663] RIP: 0010:dtInsertEntry.isra.0+0x1253/0x15d0 [ 926.790099] Code: 40 04 ff e9 2f f9 ff ff e8 1a 38 ec fe 48 8b 84 24 b8 00 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d4 01 00 00 [ 926.809162] RSP: 0018:ffff888095657488 EFLAGS: 00010202 [ 926.814526] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82764d04 [ 926.821777] RDX: 0000000000000001 RSI: ffffffff82764d56 RDI: 0000000000000008 [ 926.829056] RBP: 0000000000000000 R08: ffff888095657678 R09: 0000000000000000 [ 926.836312] R10: 0000000000000001 R11: 0000000000074071 R12: ffff88808b85b446 [ 926.843562] R13: 0000000000000073 R14: ffff88808b85b448 R15: 0000000000000000 [ 926.850813] FS: 0000555555c8d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 926.859017] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 926.864888] CR2: 00007ffcb8e74e80 CR3: 00000000aa320000 CR4: 00000000003406e0 [ 926.872140] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 926.879389] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 926.886633] Call Trace: [ 926.889217] ? txLock+0x2f0/0x1bd0 [ 926.892738] ? modify_index+0x380/0x380 [ 926.896742] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 926.901782] ? __mark_inode_dirty+0xcf0/0x1140 [ 926.906343] dtInsert+0x4c2/0xa00 [ 926.909775] ? dtSearch+0x1ef0/0x1ef0 [ 926.913569] ? txEnd+0x320/0x320 [ 926.916932] jfs_create.part.0+0x3c6/0x880 [ 926.921148] ? jfs_mkdir+0x60/0x60 [ 926.924677] ? jfs_lookup+0xb5/0x1c0 [ 926.928449] ? __dquot_initialize+0x298/0xb70 [ 926.932940] ? userns_put+0xb0/0xb0 [ 926.936558] ? dquot_initialize_needed+0x290/0x290 [ 926.941533] ? param_get_aalockpolicy+0x90/0x90 [ 926.946211] ? __d_lookup+0x411/0x710 [ 926.950017] ? generic_permission+0x116/0x4d0 [ 926.954534] ? security_inode_permission+0xc5/0xf0 [ 926.959511] jfs_create+0x3f/0x60 [ 926.962971] ? jfs_create.part.0+0x880/0x880 [ 926.967453] lookup_open+0x893/0x1a20 [ 926.971240] ? vfs_mkdir+0x7a0/0x7a0 [ 926.975367] ? unlazy_walk+0x1a4/0x540 [ 926.979319] ? check_preemption_disabled+0x41/0x280 [ 926.984324] path_openat+0x1094/0x2df0 [ 926.988195] ? path_lookupat+0x8d0/0x8d0 [ 926.992253] ? mark_held_locks+0xf0/0xf0 [ 926.996294] ? __lock_acquire+0x6de/0x3ff0 [ 927.000519] do_filp_open+0x18c/0x3f0 [ 927.004315] ? may_open_dev+0xf0/0xf0 [ 927.008155] ? lock_downgrade+0x720/0x720 [ 927.012298] ? lock_acquire+0x170/0x3c0 [ 927.016283] ? __alloc_fd+0x34/0x570 [ 927.019983] ? do_raw_spin_unlock+0x171/0x230 [ 927.024513] ? _raw_spin_unlock+0x29/0x40 [ 927.028643] ? __alloc_fd+0x28d/0x570 [ 927.032455] do_sys_open+0x3b3/0x520 [ 927.036150] ? filp_open+0x70/0x70 [ 927.039666] ? fput+0x2b/0x190 [ 927.042856] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 927.048246] ? trace_hardirqs_off_caller+0x6e/0x210 [ 927.053249] ? do_syscall_64+0x21/0x620 [ 927.057204] do_syscall_64+0xf9/0x620 [ 927.060984] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 927.066155] RIP: 0033:0x7f9ca093afd9 [ 927.069849] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 927.088729] RSP: 002b:00007ffc49f25af8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 927.096429] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9ca093afd9 [ 927.103692] RDX: 000000000000275a RSI: 0000000020000040 RDI: 00000000ffffff9c [ 927.110950] RBP: 00007f9ca08fa840 R08: 0000000000000000 R09: 0000000000000000 [ 927.118199] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000f8008000 [ 927.125468] R13: 0000000000000000 R14: 00080000000000f8 R15: 0000000000000000 [ 927.132737] Modules linked in: [ 927.137374] ---[ end trace 2dc036272c4ab277 ]--- [ 927.142218] RIP: 0010:dtInsertEntry.isra.0+0x1253/0x15d0 [ 927.147672] Code: 40 04 ff e9 2f f9 ff ff e8 1a 38 ec fe 48 8b 84 24 b8 00 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d4 01 00 00 [ 927.166775] RSP: 0018:ffff888095657488 EFLAGS: 00010202 [ 927.172398] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82764d04 [ 927.179810] RDX: 0000000000000001 RSI: ffffffff82764d56 RDI: 0000000000000008 [ 927.187132] RBP: 0000000000000000 R08: ffff888095657678 R09: 0000000000000000 [ 927.194452] R10: 0000000000000001 R11: 0000000000074071 R12: ffff88808b85b446 [ 927.201771] R13: 0000000000000073 R14: ffff88808b85b448 R15: 0000000000000000 [ 927.209040] FS: 0000555555c8d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 927.217332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 927.223261] CR2: 00007ffcb8e74e80 CR3: 00000000aa320000 CR4: 00000000003406e0 [ 927.230567] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 927.237832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 927.245158] Kernel panic - not syncing: Fatal exception [ 927.250706] Kernel Offset: disabled [ 927.254321] Rebooting in 86400 seconds..