------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 1 PID: 11961 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 lib/debugobjects.c:485
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 11961 Comm: syz-executor.5 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540
RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:485
Code: dd a0 9f 93 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd a0 9f 93 88 48 c7 c7 00 95 93 88 e8 b2 ae a9 fd <0f> 0b 83 05 db 0b 14 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89
RSP: 0018:ffffc9001698f6d8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815d4ef7 RDI: fffff52002d31ecd
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540
R13: ffffffff81630df0 R14: ffff8880414ee200 R15: 1ffff92002d31ee6
 debug_object_assert_init lib/debugobjects.c:870 [inline]
 debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:841
 debug_timer_assert_init kernel/time/timer.c:736 [inline]
 debug_assert_init kernel/time/timer.c:781 [inline]
 del_timer+0x6d/0x110 kernel/time/timer.c:1207
 try_to_grab_pending kernel/workqueue.c:1249 [inline]
 __cancel_work kernel/workqueue.c:3221 [inline]
 cancel_delayed_work+0xe0/0x450 kernel/workqueue.c:3250
 l2cap_clear_timer include/net/bluetooth/l2cap.h:879 [inline]
 l2cap_chan_del+0x541/0x1300 net/bluetooth/l2cap_core.c:661
 l2cap_chan_close+0x118/0xb10 net/bluetooth/l2cap_core.c:824
 l2cap_sock_shutdown+0x3b8/0xe90 net/bluetooth/l2cap_sock.c:1339
 l2cap_sock_release+0x63/0x1d0 net/bluetooth/l2cap_sock.c:1382
 __sock_release+0xcd/0x280 net/socket.c:605
 sock_close+0x18/0x20 net/socket.c:1278
 __fput+0x33c/0x880 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:135
 get_signal+0xd6c/0x1ee0 kernel/signal.c:2547
 do_signal+0x82/0x2520 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:235 [inline]
 __prepare_exit_to_usermode+0x156/0x1f0 arch/x86/entry/common.c:269
 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:393
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cc79
Code: 2d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4fb06a2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 00000000000020c0 RCX: 000000000045cc79
RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffe27b6d06f R14: 00007f4fb06a39c0 R15: 000000000078bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..