non-paged memory
list_del corruption, ffff88805b395400->prev is LIST_POISON2 (dead000000000122)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 12190 Comm: syz.3.1535 Not tainted 6.14.0-rc1-next-20250206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x190 lib/list_debug.c:59
Code: 8c 4c 89 fe 48 89 da e8 f2 a9 36 fc 90 0f 0b 48 89 df e8 d7 18 14 fd 48 c7 c7 60 c9 60 8c 4c 89 fe 48 89 da e8 d5 a9 36 fc 90 <0f> 0b 4c 89 e7 e8 ba 18 14 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 6b
RSP: 0018:ffffc900036676b8 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 279b84a96297c000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff819f3a7c R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: dead000000000122
R13: dffffc0000000000 R14: ffff8880296bc8d8 R15: ffff88805b395400
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8e31bc18 CR3: 000000005f8f2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del_rcu include/linux/rculist.h:168 [inline]
 hci_chan_del+0x70/0x1b0 net/bluetooth/hci_conn.c:2858
 l2cap_conn_free net/bluetooth/l2cap_core.c:1816 [inline]
 kref_put include/linux/kref.h:65 [inline]
 l2cap_conn_put+0x70/0xe0 net/bluetooth/l2cap_core.c:1830
 l2cap_sock_shutdown+0xa8a/0x1020 net/bluetooth/l2cap_sock.c:1377
 l2cap_sock_release+0x79/0x1d0 net/bluetooth/l2cap_sock.c:1416
 __sock_release net/socket.c:647 [inline]
 sock_close+0xbc/0x240 net/socket.c:1398
 __fput+0x3e9/0x9f0 fs/file_table.c:464
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2a/0x2860 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 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+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f102ad8ce23
Code: Unable to access opcode bytes at 0x7f102ad8cdf9.
RSP: 002b:00007ffd31a9ce08 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: 00007f10287f6000 RBX: 00007f102afa62d8 RCX: 00007f102ad8ce23
RDX: 0000000000000003 RSI: 0000000000400000 RDI: 00007f10287f6000
RBP: 00007f102afa6240 R08: 00000000000000db R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 00007f102afa5fa0
R13: 00007f102afa6240 R14: 00000000000000af R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x190 lib/list_debug.c:59
Code: 8c 4c 89 fe 48 89 da e8 f2 a9 36 fc 90 0f 0b 48 89 df e8 d7 18 14 fd 48 c7 c7 60 c9 60 8c 4c 89 fe 48 89 da e8 d5 a9 36 fc 90 <0f> 0b 4c 89 e7 e8 ba 18 14 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 6b
RSP: 0018:ffffc900036676b8 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 279b84a96297c000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff819f3a7c R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: dead000000000122
R13: dffffc0000000000 R14: ffff8880296bc8d8 R15: ffff88805b395400
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bc34379bc8 CR3: 000000005f8f2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400