------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 1 PID: 16229 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline]
WARNING: CPU: 1 PID: 16229 at lib/debugobjects.c:508 debug_object_assert_init+0x1fa/0x250 lib/debugobjects.c:890
Modules linked in:
CPU: 1 PID: 16229 Comm: syz-executor.5 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debug_print_object lib/debugobjects.c:505 [inline]
RIP: 0010:debug_object_assert_init+0x1fa/0x250 lib/debugobjects.c:890
Code: e8 3b 0a c8 fd 4c 8b 45 00 48 c7 c7 80 2a 72 8a 48 c7 c6 e0 26 72 8a 48 c7 c2 c0 2c 72 8a 31 c9 49 89 d9 31 c0 e8 f6 f4 4d fd <0f> 0b ff 05 0a 36 19 0a 48 83 c5 38 48 89 e8 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc90017357b38 EFLAGS: 00010046
RAX: d0d3671230965600 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90013945000 RSI: 000000000000b6d2 RDI: 000000000000b6d3
RBP: ffffffff8a10c080 R08: ffffffff81653722 R09: ffffed1017363f1c
R10: ffffed1017363f1c R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888083639200 R14: 0000000000000002 R15: ffffffff90f49228
FS:  00007f35ce62c700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd998e76bb8 CR3: 0000000012b36000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 debug_timer_assert_init kernel/time/timer.c:737 [inline]
 debug_assert_init kernel/time/timer.c:782 [inline]
 del_timer+0x7e/0x390 kernel/time/timer.c:1202
 try_to_grab_pending+0x122/0xb50 kernel/workqueue.c:1252
 __cancel_work kernel/workqueue.c:3227 [inline]
 cancel_delayed_work+0x8e/0x360 kernel/workqueue.c:3256
 l2cap_clear_timer include/net/bluetooth/l2cap.h:882 [inline]
 l2cap_chan_del+0x411/0x610 net/bluetooth/l2cap_core.c:661
 l2cap_sock_shutdown+0x421/0x880 net/bluetooth/l2cap_sock.c:1339
 __sys_shutdown_sock net/socket.c:2189 [inline]
 __sys_shutdown net/socket.c:2201 [inline]
 __do_sys_shutdown net/socket.c:2209 [inline]
 __se_sys_shutdown+0x147/0x1a0 net/socket.c:2207
 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f35ce62c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffc0b37d6ff R14: 00007f35ce62c300 R15: 0000000000022000