------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 8514 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 8514 Comm: syz-executor353 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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 20 a2 9d 89 4c 89 ee 48 c7 c7 20 96 9d 89 e8 1e 1e f2 04 <0f> 0b 83 05 a5 8a 32 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc9000161f568 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: ffff88801ffecec0 RSI: ffffffff8158c855 RDI: fffff520002c3e9f
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9e2011b
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff894d3be0
R13: ffffffff899d9ca0 R14: ffffffff815f15f0 R15: 1ffff920002c3eb8
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a603468cc8 CR3: 000000000b08e000 CR4: 00000000001506f0
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+0x6d/0x110 kernel/time/timer.c:1202
 try_to_grab_pending+0x6d/0xd0 kernel/workqueue.c:1252
 __cancel_work kernel/workqueue.c:3224 [inline]
 cancel_delayed_work+0x76/0x2e0 kernel/workqueue.c:3253
 l2cap_clear_timer include/net/bluetooth/l2cap.h:881 [inline]
 l2cap_chan_del+0x517/0xa80 net/bluetooth/l2cap_core.c:661
 l2cap_chan_close+0x1bc/0xaf0 net/bluetooth/l2cap_core.c:823
 l2cap_sock_shutdown+0x3dd/0x10c0 net/bluetooth/l2cap_sock.c:1339
 l2cap_sock_release+0x72/0x200 net/bluetooth/l2cap_sock.c:1382
 __sock_release+0xcd/0x280 net/socket.c:596
 sock_close+0x18/0x20 net/socket.c:1277
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:151
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0xb64/0x29b0 kernel/exit.c:809
 do_group_exit+0x125/0x310 kernel/exit.c:906
 get_signal+0x42a/0x1f10 kernel/signal.c:2758
 arch_do_signal+0x82/0x2390 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0x100/0x1a0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x446e49
Code: Unable to access opcode bytes at RIP 0x446e1f.
RSP: 002b:00007ffcb66f5e18 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446e49
RDX: 0000000000000007 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff
R10: 0000000000000004 R11: 0000000000000246 R12: 000000000197b850
R13: 0000000000000072 R14: 0000000000000000 R15: 0000000000000000