Warning: Permanently added '10.128.1.118' (ECDSA) to the list of known hosts. syzkaller login: [ 36.324398] IPVS: ftp: loaded support on port[0] = 21 [ 36.380711] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 36.390204] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 36.409473] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 36.421727] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 36.437268] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 36.443880] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 36.451071] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 36.457869] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 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 [ 37.372433] block nbd0: NBD_DISCONNECT [ 37.383350] kasan: CONFIG_KASAN_INLINE enabled [ 37.388035] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.395389] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.401603] CPU: 1 PID: 8254 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 [ 37.409334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 37.418681] RIP: 0010:__lock_acquire+0x1eb/0x3ff0 [ 37.423500] Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff [ 37.442386] RSP: 0018:ffff888094f97910 EFLAGS: 00010006 [ 37.447730] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 37.455003] RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 [ 37.462255] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 37.469687] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 37.476940] R13: ffff8880af8f60c0 R14: 0000000000000110 R15: 0000000000000001 [ 37.484200] FS: 00007f693d4618c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 37.492530] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.498395] CR2: 00007ffc4fd28dfc CR3: 00000000b5baa000 CR4: 00000000003406e0 [ 37.505755] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.513015] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.520268] Call Trace: [ 37.522844] ? __lock_acquire+0x6de/0x3ff0 [ 37.527065] ? mark_held_locks+0xf0/0xf0 [ 37.531112] ? __lock_acquire+0x6de/0x3ff0 [ 37.535324] ? mark_held_locks+0xf0/0xf0 [ 37.539371] ? __free_object+0xdd/0x1e0 [ 37.543335] ? mark_held_locks+0xf0/0xf0 [ 37.547383] ? mark_held_locks+0xa6/0xf0 [ 37.551422] lock_acquire+0x170/0x3c0 [ 37.555200] ? flush_workqueue+0xe8/0x13e0 [ 37.559411] flush_workqueue+0x117/0x13e0 [ 37.563540] ? flush_workqueue+0xe8/0x13e0 [ 37.567753] ? lock_downgrade+0x720/0x720 [ 37.571891] ? hctx_unlock+0x83/0x140 [ 37.575673] ? check_flush_dependency+0x400/0x400 [ 37.580514] nbd_disconnect_and_put+0x100/0x190 [ 37.585164] nbd_release+0x144/0x170 [ 37.588862] ? nbd_queue_rq+0xe60/0xe60 [ 37.592822] __blkdev_put+0x636/0x870 [ 37.596610] ? fsync_bdev+0xc0/0xc0 [ 37.600213] ? locks_remove_file+0x2cd/0x450 [ 37.604598] ? blkdev_put+0x85/0x520 [ 37.608290] ? blkdev_put+0x520/0x520 [ 37.612067] blkdev_close+0x86/0xb0 [ 37.615675] __fput+0x2ce/0x890 [ 37.618935] task_work_run+0x148/0x1c0 [ 37.622805] exit_to_usermode_loop+0x251/0x2a0 [ 37.627386] do_syscall_64+0x538/0x620 [ 37.631256] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.636430] RIP: 0033:0x7f693c5a7270 [ 37.640128] Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 [ 37.659010] RSP: 002b:00007ffc4fd2b078 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 37.666723] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f693c5a7270 [ 37.673998] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 37.681419] RBP: 00007f693d461710 R08: 0000000000000045 R09: 0000000000000018 [ 37.688666] R10: 000055ec20042e38 R11: 0000000000000246 R12: 0000000000000000 [ 37.695914] R13: 000055ec200516e0 R14: 0000000000000003 R15: 000000000000000e [ 37.703161] Modules linked in: [ 37.706339] ---[ end trace b97e6d852ca70c4e ]--- [ 37.711106] RIP: 0010:__lock_acquire+0x1eb/0x3ff0 [ 37.715946] Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff [ 37.734831] RSP: 0018:ffff888094f97910 EFLAGS: 00010006 [ 37.740443] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 37.747690] RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 [ 37.754939] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 37.762193] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 37.769444] R13: ffff8880af8f60c0 R14: 0000000000000110 R15: 0000000000000001 [ 37.776698] FS: 00007f693d4618c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 37.784904] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.790773] CR2: 00007ffc4fd28dfc CR3: 00000000b5baa000 CR4: 00000000003406e0 [ 37.798026] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.805275] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.812527] Kernel panic - not syncing: Fatal exception [ 37.818230] Kernel Offset: disabled [ 37.821846] Rebooting in 86400 seconds..