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Bluetooth: hci4: command 0x0c1a tx timeout
 non-paged memory
list_del corruption, ffff8880338dca00->next is LIST_POISON1 (dead000000000100)
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kernel BUG at lib/list_debug.c:56!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 55 Comm: kworker/u9:0 Not tainted 6.15.0-rc5-syzkaller-00158-g3013c33dcbd9 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Workqueue: hci4 hci_conn_timeout
RIP: 0010:__list_del_entry_valid_or_report+0x121/0x200 lib/list_debug.c:56
Code: 48 c7 c7 20 86 f4 8b e8 0d 4a c4 fc 90 0f 0b 4c 89 e7 e8 e2 10 28 fd 4c 89 e2 48 89 de 48 c7 c7 80 86 f4 8b e8 f0 49 c4 fc 90 <0f> 0b 48 89 ef e8 c5 10 28 fd 48 89 ea 48 89 de 48 c7 c7 e0 86 f4
RSP: 0018:ffffc9000121fb80 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff8880338dca00 RCX: ffffffff819a80d9
RDX: 0000000000000000 RSI: ffffffff819aff66 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: dead000000000100
R13: dffffc0000000000 R14: ffff8880237f8618 R15: ffff8880338dca00
FS:  0000000000000000(0000) GS:ffff8881249e1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2edf6ff8 CR3: 000000000e180000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [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:6874
 hci_abort_conn+0x15a/0x340 net/bluetooth/hci_conn.c:2893
 hci_conn_timeout+0x1a2/0x210 net/bluetooth/hci_conn.c:580
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 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 20 86 f4 8b e8 0d 4a c4 fc 90 0f 0b 4c 89 e7 e8 e2 10 28 fd 4c 89 e2 48 89 de 48 c7 c7 80 86 f4 8b e8 f0 49 c4 fc 90 <0f> 0b 48 89 ef e8 c5 10 28 fd 48 89 ea 48 89 de 48 c7 c7 e0 86 f4
RSP: 0018:ffffc9000121fb80 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff8880338dca00 RCX: ffffffff819a80d9
RDX: 0000000000000000 RSI: ffffffff819aff66 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: dead000000000100
R13: dffffc0000000000 R14: ffff8880237f8618 R15: ffff8880338dca00
FS:  0000000000000000(0000) GS:ffff888124ae1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000029000 CR3: 0000000031df8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400