list_del corruption, ffff88801a688000->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:58!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5791 Comm: kworker/u5:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: hci3 hci_conn_timeout
RIP: 0010:__list_del_entry_valid_or_report+0xe9/0x130 lib/list_debug.c:56
Code: 48 89 de e8 d9 2e 3d 06 0f 0b 48 c7 c7 40 67 fc 8a 48 89 de e8 c8 2e 3d 06 0f 0b 48 c7 c7 a0 67 fc 8a 48 89 de e8 b7 2e 3d 06 <0f> 0b 48 c7 c7 00 68 fc 8a 48 89 de e8 a6 2e 3d 06 0f 0b 48 c7 c7
RSP: 0018:ffffc9000453fac8 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffff88801a688000 RCX: edfbe0038c61af00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffffff89814ae0 R08: ffffc9000453f7c7 R09: 1ffff920008a7ef8
R10: dffffc0000000000 R11: fffff520008a7ef9 R12: dffffc0000000000
R13: 1ffff110034d1000 R14: dead000000000100 R15: dead000000000122
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000031000 CR3: 000000007ef23000 CR4: 00000000003506f0
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 net/bluetooth/hci_sync.c:665 [inline]
 hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:869 [inline]
 hci_cmd_sync_dequeue_once+0x244/0x370 net/bluetooth/hci_sync.c:888
 hci_cancel_connect_sync+0xc8/0x120 net/bluetooth/hci_sync.c:-1
 hci_abort_conn+0x18c/0x330 net/bluetooth/hci_conn.c:2899
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xe9/0x130 lib/list_debug.c:56
Code: 48 89 de e8 d9 2e 3d 06 0f 0b 48 c7 c7 40 67 fc 8a 48 89 de e8 c8 2e 3d 06 0f 0b 48 c7 c7 a0 67 fc 8a 48 89 de e8 b7 2e 3d 06 <0f> 0b 48 c7 c7 00 68 fc 8a 48 89 de e8 a6 2e 3d 06 0f 0b 48 c7 c7
RSP: 0018:ffffc9000453fac8 EFLAGS: 00010246
RAX: 000000000000004e RBX: ffff88801a688000 RCX: edfbe0038c61af00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffffff89814ae0 R08: ffffc9000453f7c7 R09: 1ffff920008a7ef8
R10: dffffc0000000000 R11: fffff520008a7ef9 R12: dffffc0000000000
R13: 1ffff110034d1000 R14: dead000000000100 R15: dead000000000122
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000031000 CR3: 000000007ef23000 CR4: 00000000003506f0