slab kmalloc-2k start ffff8880322fc000 pointer offset 1400 size 2048
list_del corruption. prev->next should be ffff88807b7eb578, but was 0000000000000000. (prev=ffff8880322fc578)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 16472 Comm: syz.7.2676 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 4b ae 2f fd 43 80 3c 2c 00 74 08 4c 89 ff e8 4c fd 51 fd 49 8b 17 48 c7 c7 40 7b 4c 8c 48 89 de 4c 89 f9 e8 17 73 43 fc 90 <0f> 0b 4c 89 f7 e8 1c ae 2f fd 43 80 3c 2c 00 74 08 4c 89 ff e8 1d
RSP: 0018:ffffc900047376c0 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff88807b7eb578 RCX: 7e4b448a444e1000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90004737427 R09: 1ffff920008e6e84
R10: dffffc0000000000 R11: fffff520008e6e85 R12: 1ffff1100645f8af
R13: dffffc0000000000 R14: ffff8880322fc578 R15: ffff8880322fc578
FS:  0000000000000000(0000) GS:ffff888124f0c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3712192000 CR3: 00000000674b8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:253 [inline]
 list_del_init include/linux/list.h:325 [inline]
 bt_accept_unlink+0x72/0x2c0 net/bluetooth/af_bluetooth.c:264
 l2cap_sock_teardown_cb+0x17e/0x490 net/bluetooth/l2cap_sock.c:1711
 l2cap_chan_del+0x98/0x600 net/bluetooth/l2cap_core.c:687
 l2cap_conn_del+0x308/0x550 net/bluetooth/l2cap_core.c:1826
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2181 [inline]
 hci_conn_hash_flush+0x105/0x260 net/bluetooth/hci_conn.c:2745
 hci_dev_close_sync+0x7fc/0x10a0 net/bluetooth/hci_sync.c:5557
 hci_dev_do_close net/bluetooth/hci_core.c:502 [inline]
 hci_unregister_dev+0x232/0x5b0 net/bluetooth/hci_core.c:2681
 vhci_release+0x16d/0x1c0 drivers/bluetooth/hci_vhci.c:700
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x73a/0x2360 kernel/exit.c:1008
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1151
 get_signal+0x121b/0x12c0 kernel/signal.c:3039
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x138/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x510 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb43cb5e90e
Code: Unable to access opcode bytes at 0x7fb43cb5e8e4.
RSP: 002b:00007fb43da86f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fb43da876c0 RCX: 00007fb43cb5e90e
RDX: 00007fb43da86fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fb43cc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb43ce26038 R14: 00007fb43ce25fa0 R15: 00007ffc0e478858
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 4b ae 2f fd 43 80 3c 2c 00 74 08 4c 89 ff e8 4c fd 51 fd 49 8b 17 48 c7 c7 40 7b 4c 8c 48 89 de 4c 89 f9 e8 17 73 43 fc 90 <0f> 0b 4c 89 f7 e8 1c ae 2f fd 43 80 3c 2c 00 74 08 4c 89 ff e8 1d
RSP: 0018:ffffc900047376c0 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff88807b7eb578 RCX: 7e4b448a444e1000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90004737427 R09: 1ffff920008e6e84
R10: dffffc0000000000 R11: fffff520008e6e85 R12: 1ffff1100645f8af
R13: dffffc0000000000 R14: ffff8880322fc578 R15: ffff8880322fc578
FS:  0000000000000000(0000) GS:ffff888124f0c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3712192000 CR3: 000000000e948000 CR4: 00000000003526f0