------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 5886 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 5886 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 40 4f dc 88 4c 89 ee 48 c7 c7 40 43 dc 88 e8 c2 9e 7a 04 <0f> 0b 83 05 75 fa bc 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc90001b6f6b8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200036dec9
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9e2015b
R10: ffffed10173c402b R11: 203a47554245444f R12: ffffffff888cb680
R13: ffffffff88dc49c0 R14: ffffffff8158b950 R15: 1ffff9200036dee2
FS:  00007f980adf3700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 00000000156b0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 debug_object_assert_init lib/debugobjects.c:890 [inline]
 debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:861
 debug_timer_assert_init kernel/time/timer.c:737 [inline]
 debug_assert_init kernel/time/timer.c:782 [inline]
 del_timer+0x65/0xf0 kernel/time/timer.c:1202
 try_to_grab_pending+0x41/0x80 kernel/workqueue.c:1252
 __cancel_work kernel/workqueue.c:3227 [inline]
 cancel_delayed_work+0x6d/0x260 kernel/workqueue.c:3256
 l2cap_clear_timer include/net/bluetooth/l2cap.h:881 [inline]
 l2cap_chan_del+0x43b/0x8e0 net/bluetooth/l2cap_core.c:661
 l2cap_chan_close+0x183/0x990 net/bluetooth/l2cap_core.c:823
 l2cap_sock_shutdown+0x31c/0xe40 net/bluetooth/l2cap_sock.c:1339
 l2cap_sock_release+0x5d/0x1e0 net/bluetooth/l2cap_sock.c:1382
 __sock_release+0xbb/0x270 net/socket.c:597
 sock_close+0xf/0x20 net/socket.c:1256
 __fput+0x204/0x870 fs/file_table.c:280
 task_work_run+0xc0/0x160 kernel/task_work.c:140
 get_signal+0x157f/0x1b90 kernel/signal.c:2554
 arch_do_signal_or_restart+0x2af/0x18c0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f980b67e279
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f980adf3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 00007f980b790f80 RCX: 00007f980b67e279
RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f980b6d8189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff02fae0af R14: 00007f980adf3300 R15: 0000000000022000