non-paged memory
list_del corruption, ffff88802419bd00->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:56!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 5939 Comm: kworker/u33:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: hci3 hci_conn_timeout
RIP: 0010:__list_del_entry_valid_or_report+0x121/0x200 lib/list_debug.c:56
Code: 48 c7 c7 80 d8 f1 8b e8 4d 98 ea fc 90 0f 0b 4c 89 e7 e8 02 6f 4f fd 4c 89 e2 48 89 de 48 c7 c7 e0 d8 f1 8b e8 30 98 ea fc 90 <0f> 0b 48 89 ef e8 e5 6e 4f fd 48 89 ea 48 89 de 48 c7 c7 40 d9 f1
RSP: 0018:ffffc90002a9fb68 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88802419bd00 RCX: ffffffff819a5479
RDX: 0000000000000000 RSI: ffffffff819acfa6 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: dead000000000100
R13: dffffc0000000000 R14: ffff888027774660 R15: ffff88802419bd00
FS:  0000000000000000(0000) GS:ffff8880979e7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000080002000 CR3: 000000006f241000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 _hci_cmd_sync_cancel_entry.constprop.0+0x80/0x1d0 net/bluetooth/hci_sync.c:647
 hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:851 [inline]
 hci_cmd_sync_dequeue_once net/bluetooth/hci_sync.c:870 [inline]
 hci_cancel_connect_sync+0xfa/0x2b0 net/bluetooth/hci_sync.c:6960
 hci_abort_conn+0x15a/0x340 net/bluetooth/hci_conn.c:2961
 hci_conn_timeout+0x1a2/0x210 net/bluetooth/hci_conn.c:579
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c2/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x121/0x200 lib/list_debug.c:56
Code: 48 c7 c7 80 d8 f1 8b e8 4d 98 ea fc 90 0f 0b 4c 89 e7 e8 02 6f 4f fd 4c 89 e2 48 89 de 48 c7 c7 e0 d8 f1 8b e8 30 98 ea fc 90 <0f> 0b 48 89 ef e8 e5 6e 4f fd 48 89 ea 48 89 de 48 c7 c7 40 d9 f1
RSP: 0018:ffffc90002a9fb68 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88802419bd00 RCX: ffffffff819a5479
RDX: 0000000000000000 RSI: ffffffff819acfa6 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: dead000000000100
R13: dffffc0000000000 R14: ffff888027774660 R15: ffff88802419bd00
FS:  0000000000000000(0000) GS:ffff8880979e7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000080005000 CR3: 000000006f241000 CR4: 0000000000352ef0