Warning: Permanently added '10.128.10.45' (ECDSA) to the list of known hosts.
syzkaller login: [   88.972931] audit: type=1400 audit(1596869424.502:8): avc:  denied  { execmem } for  pid=6356 comm="syz-executor774" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   88.995125] IPVS: ftp: loaded support on port[0] = 21
executing program
executing program
executing program
[   90.094539] list_del corruption, ffff88809b5268a8->next is LIST_POISON1 (dead000000000100)
[   90.106773] ------------[ cut here ]------------
[   90.111519] kernel BUG at lib/list_debug.c:45!
[   90.116138] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   90.121490] Modules linked in:
[   90.124755] CPU: 0 PID: 6384 Comm: kworker/u5:2 Not tainted 4.14.193-syzkaller #0
[   90.132349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   90.141695] Workqueue: hci0 hci_rx_work
[   90.145652] task: ffff88809ebf0580 task.stack: ffff888097ba0000
[   90.151691] RIP: 0010:__list_del_entry_valid.cold+0x23/0x55
[   90.157395] RSP: 0018:ffff888097ba79b8 EFLAGS: 00010282
[   90.162733] RAX: 000000000000004e RBX: ffff8880870600c0 RCX: 0000000000000000
[   90.170025] RDX: 0000000000000000 RSI: ffffffff86ac0dc0 RDI: ffffed1012f74f2d
[   90.177271] RBP: ffff88809b5268a8 R08: 000000000000004e R09: 0000000000000000
[   90.184524] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
[   90.192145] R13: dead000000000100 R14: ffff88809b526440 R15: ffff88808cce8c40
[   90.199581] FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[   90.207793] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.213677] CR2: 0000561ddc1090ba CR3: 0000000099c68000 CR4: 00000000001406f0
[   90.220939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   90.228299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   90.236143] Call Trace:
[   90.238834]  l2cap_chan_put+0x50/0x1b0
[   90.242717]  l2cap_recv_frame+0xb9a/0x95c0
[   90.246957]  ? trace_hardirqs_on+0x10/0x10
[   90.251177]  ? __lock_acquire+0x5fc/0x3f20
[   90.255432]  ? __lock_acquire+0x5fc/0x3f20
[   90.259650]  ? l2cap_ertm_init+0xb70/0xb70
[   90.263883]  ? lock_acquire+0x170/0x3f0
[   90.267920]  ? hci_rx_work+0x278/0x970
[   90.271782]  ? trace_hardirqs_on+0x10/0x10
[   90.276004]  ? hci_rx_work+0x278/0x970
[   90.279865]  ? hci_rx_work+0x3a2/0x970
[   90.283728]  ? lock_downgrade+0x740/0x740
[   90.287853]  ? __ww_mutex_wakeup_for_backoff+0x210/0x210
[   90.293307]  ? __mutex_unlock_slowpath+0x75/0x770
[   90.298259]  l2cap_recv_acldata+0x7a6/0x8b0
[   90.302559]  hci_rx_work+0x3d1/0x970
[   90.306252]  process_one_work+0x793/0x14a0
[   90.310463]  ? work_busy+0x320/0x320
[   90.314150]  ? worker_thread+0x158/0xff0
[   90.318203]  ? _raw_spin_unlock_irq+0x24/0x80
[   90.324091]  worker_thread+0x5cc/0xff0
[   90.328144]  ? rescuer_thread+0xc80/0xc80
[   90.332270]  kthread+0x30d/0x420
[   90.335643]  ? kthread_create_on_node+0xd0/0xd0
[   90.340289]  ret_from_fork+0x24/0x30
[   90.343982] Code: e6 e8 a8 ae 44 fe 0f 0b 48 89 ee 48 c7 c7 60 5e e4 86 e8 97 ae 44 fe 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 5d e4 86 e8 83 ae 44 fe <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 00 5e e4 86 e8 6f ae 44 fe 0f 
[   90.363163] RIP: __list_del_entry_valid.cold+0x23/0x55 RSP: ffff888097ba79b8
[   90.370367] ---[ end trace 080e6e2953b0c5f9 ]---
[   90.375097] Kernel panic - not syncing: Fatal exception
[   90.381695] Kernel Offset: disabled
[   90.385509] Rebooting in 86400 seconds..