slab kmalloc-2k start ffff0000f7549000 pointer offset 1392 size 2048
list_del corruption. prev->next should be ffff0000d243a570, but was 0000000000000000. (prev=ffff0000f7549570)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 6552 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid_or_report+0x17c/0x1b4 lib/list_debug.c:62
lr : __list_del_entry_valid_or_report+0x17c/0x1b4 lib/list_debug.c:62
sp : ffff80009fef7670
x29: ffff80009fef7670 x28: 0000000000000003 x27: ffff0000d243900c
x26: ffff0000d2439000 x25: 1fffe0001a487202 x24: dfff800000000000
x23: 1fffe0001eea92ae x22: dfff800000000000 x21: ffff0000f7549570
x20: ffff0000f7549570 x19: ffff0000d243a570 x18: 00000000ffffffff
x17: 20747562202c3037 x16: ffff800082de95c8 x15: 0000000000000001
x14: 1ffff00013fdee48 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700013fdee49 x10: 0000000000ff0100 x9 : 7792b358e21be800
x8 : 7792b358e21be800 x7 : ffff8000805638d4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d5158
x2 : 0000000000000002 x1 : 0000000100000000 x0 : 000000000000006d
Call trace:
 __list_del_entry_valid_or_report+0x17c/0x1b4 lib/list_debug.c:62 (P)
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 bt_accept_unlink+0x40/0x248 net/bluetooth/af_bluetooth.c:259
 l2cap_sock_teardown_cb+0x148/0x360 net/bluetooth/l2cap_sock.c:1616
 l2cap_chan_del+0xb8/0x470 net/bluetooth/l2cap_core.c:655
 l2cap_conn_del+0x2f8/0x5f0 net/bluetooth/l2cap_core.c:1787
 l2cap_disconn_cfm+0x90/0xe0 net/bluetooth/l2cap_core.c:7325
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2121 [inline]
 hci_conn_hash_flush+0x108/0x218 net/bluetooth/hci_conn.c:2602
 hci_dev_close_sync+0x89c/0x1154 net/bluetooth/hci_sync.c:5303
 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
 hci_unregister_dev+0x204/0x4c0 net/bluetooth/hci_core.c:2715
 vhci_release+0x12c/0x17c drivers/bluetooth/hci_vhci.c:690
 __fput+0x340/0x75c fs/file_table.c:468
 ____fput+0x20/0x58 fs/file_table.c:496
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x524/0x1a14 kernel/exit.c:966
 do_group_exit+0x194/0x22c kernel/exit.c:1107
 __do_sys_exit_group kernel/exit.c:1118 [inline]
 __se_sys_exit_group kernel/exit.c:1116 [inline]
 pid_child_should_wake+0x0/0x1dc kernel/exit.c:1116
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 91210000 aa1303e1 aa1503e3 974c7189 (d4210000) 
---[ end trace 0000000000000000 ]---