slab kmalloc-2k start ffff88801eb2f000 pointer offset 1400 size 2048
list_del corruption. prev->next should be ffff888030628578, but was 0000000000000001. (prev=ffff88801eb2f578)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 14088 Comm: syz.7.2461 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 8b 8f 6e fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8c 77 90 fd 49 8b 17 48 c7 c7 80 7d bf 8b 48 89 de 4c 89 f9 e8 07 19 90 fc 90 <0f> 0b 4c 89 f7 e8 5c 8f 6e fd 43 80 3c 2c 00 74 08 4c 89 ff e8 5d
RSP: 0018:ffffc9000e5cf680 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888030628578 RCX: a091028efe40b900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888029a68010 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba738 R12: 1ffff11003d65eaf
R13: dffffc0000000000 R14: ffff88801eb2f578 R15: ffff88801eb2f578
FS:  0000000000000000(0000) GS:ffff888125f88000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f901211b250 CR3: 0000000024936000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __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+0x39/0x260 net/bluetooth/af_bluetooth.c:259
 l2cap_sock_teardown_cb+0x17e/0x490 net/bluetooth/l2cap_sock.c:1616
 l2cap_chan_del+0xb5/0x620 net/bluetooth/l2cap_core.c:656
 l2cap_conn_del+0x326/0x5b0 net/bluetooth/l2cap_core.c:1788
 hci_disconn_cfm include/net/bluetooth/hci_core.h:2146 [inline]
 hci_conn_hash_flush+0x10d/0x260 net/bluetooth/hci_conn.c:2637
 hci_dev_close_sync+0x821/0x1100 net/bluetooth/hci_sync.c:5326
 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
 hci_unregister_dev+0x21a/0x5b0 net/bluetooth/hci_core.c:2715
 vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
 __fput+0x44c/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6c5/0x2310 kernel/exit.c:971
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112
 get_signal+0x1285/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e3fbc2005
Code: Unable to access opcode bytes at 0x7f6e3fbc1fdb.
RSP: 002b:00007f6e4097af80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f6e3fde6090 RCX: 00007f6e3fbc2005
RDX: 00007f6e4097afc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6e3fc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f6e3fde6128 R14: 00007f6e3fde6090 R15: 00007ffdec8bea28
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 8b 8f 6e fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8c 77 90 fd 49 8b 17 48 c7 c7 80 7d bf 8b 48 89 de 4c 89 f9 e8 07 19 90 fc 90 <0f> 0b 4c 89 f7 e8 5c 8f 6e fd 43 80 3c 2c 00 74 08 4c 89 ff e8 5d
RSP: 0018:ffffc9000e5cf680 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888030628578 RCX: a091028efe40b900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888029a68010 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba738 R12: 1ffff11003d65eaf
R13: dffffc0000000000 R14: ffff88801eb2f578 R15: ffff88801eb2f578
FS:  0000000000000000(0000) GS:ffff888125f88000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f901211b250 CR3: 0000000024936000 CR4: 00000000003526f0