------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 WARNING: CPU: 0 PID: 16658 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline] WARNING: CPU: 0 PID: 16658 at lib/debugobjects.c:508 debug_object_assert_init+0x1fa/0x250 lib/debugobjects.c:895 Modules linked in: CPU: 0 PID: 16658 Comm: syz-executor.1 Not tainted 5.15.0-rc4-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:895 Code: e8 cb 18 b8 fd 4c 8b 45 00 48 c7 c7 80 2b b4 8a 48 c7 c6 e0 27 b4 8a 48 c7 c2 c0 2d b4 8a 31 c9 49 89 d9 31 c0 e8 16 e3 37 fd <0f> 0b ff 05 aa 68 c6 09 48 83 c5 38 48 89 e8 48 c1 e8 03 42 80 3c RSP: 0018:ffffc90002eaf9b8 EFLAGS: 00010046 RAX: b003c776eafa1300 RBX: 0000000000000000 RCX: ffff8880912b8000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffffff8a512940 R08: ffffffff81681d12 R09: ffffed1017383f2c R10: ffffed1017383f2c R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88801ad97200 R14: 0000000000000002 R15: ffffffff90bbf5c0 FS: 00005555562a3400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fce752ee004 CR3: 000000007855e000 CR4: 00000000003506f0 Call Trace: debug_timer_assert_init kernel/time/timer.c:739 [inline] debug_assert_init kernel/time/timer.c:784 [inline] del_timer+0xa5/0x3d0 kernel/time/timer.c:1204 try_to_grab_pending+0x151/0xbb0 kernel/workqueue.c:1270 __cancel_work kernel/workqueue.c:3258 [inline] cancel_delayed_work+0xb3/0x380 kernel/workqueue.c:3287 l2cap_clear_timer include/net/bluetooth/l2cap.h:883 [inline] l2cap_chan_del+0x411/0x610 net/bluetooth/l2cap_core.c:665 l2cap_sock_shutdown+0x41e/0x880 net/bluetooth/l2cap_sock.c:1347 l2cap_sock_release+0x68/0x1c0 net/bluetooth/l2cap_sock.c:1390 __sock_release net/socket.c:649 [inline] sock_close+0xd8/0x260 net/socket.c:1314 __fput+0x3fe/0x870 fs/file_table.c:280 task_work_run+0x146/0x1c0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x209/0x220 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300 do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fca5b45f51b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffe49adb420 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fca5b45f51b RDX: ffffffffffffffbc RSI: ffffffff81aa4222 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c9215f0 R10: 000000000000120d R11: 0000000000000293 R12: 000000000005d0de R13: 00000000000003e8 R14: 00007fca5b5b0f60 R15: 000000000005d0ce