slab kmalloc-2k start ffff88805d7d3000 pointer offset 1360 size 2048
list_del corruption. prev->next should be ffff888020acb550, but was 0000000000000000. (prev=ffff88805d7d3550)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 9708 Comm: syz.3.962 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 60 69 f4 8b e8 a7 9f c5 fc 90 <0f> 0b 4c 89 e7 e8 6c 52 29 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9001bfbf7e8 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888020acb550 RCX: ffffffff819a9db9
RDX: 0000000000000000 RSI: ffffffff819b1c46 RDI: 0000000000000005
RBP: ffff88805d7d3550 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: ffffffffffffda98 R12: ffff88805d7d3550
R13: ffff888020acb558 R14: ffff88805d7d3000 R15: ffff888020ace010
FS:  0000000000000000(0000) GS:ffff8881249b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc43ad7d60 CR3: 00000000603a8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del_init include/linux/list.h:287 [inline]
 bt_accept_unlink+0x34/0x2e0 net/bluetooth/af_bluetooth.c:256
 l2cap_sock_teardown_cb+0x1a3/0x3c0 net/bluetooth/l2cap_sock.c:1613
 l2cap_chan_del+0xba/0x8f0 net/bluetooth/l2cap_core.c:655
 l2cap_conn_del+0x37a/0x730 net/bluetooth/l2cap_core.c:1786
 l2cap_disconn_cfm net/bluetooth/l2cap_core.c:7299 [inline]
 l2cap_disconn_cfm+0x96/0xd0 net/bluetooth/l2cap_core.c:7292
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2069 [inline]
 hci_conn_hash_flush+0x10b/0x260 net/bluetooth/hci_conn.c:2701
 hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5225
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483
 hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2678
 vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:665
 __fput+0x3ff/0xb70 fs/file_table.c:465
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xafb/0x2c30 kernel/exit.c:953
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102
 get_signal+0x2673/0x26d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc42dbfa25
Code: Unable to access opcode bytes at 0x7efc42dbf9fb.
RSP: 002b:00007efc43cd3f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007efc42fa5fa0 RCX: 00007efc42dbfa25
RDX: 00007efc43cd3fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007efc42e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc42fa5fa0 R15: 00007ffca0b33478
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 60 69 f4 8b e8 a7 9f c5 fc 90 <0f> 0b 4c 89 e7 e8 6c 52 29 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9001bfbf7e8 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888020acb550 RCX: ffffffff819a9db9
RDX: 0000000000000000 RSI: ffffffff819b1c46 RDI: 0000000000000005
RBP: ffff88805d7d3550 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: ffffffffffffda98 R12: ffff88805d7d3550
R13: ffff888020acb558 R14: ffff88805d7d3000 R15: ffff888020ace010
FS:  0000000000000000(0000) GS:ffff8881249b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc43ad7d60 CR3: 00000000603a8000 CR4: 00000000003526f0