------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 WARNING: CPU: 1 PID: 3603 at lib/debugobjects.c:502 debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Modules linked in: CPU: 1 PID: 3603 Comm: syz-executor.0 Not tainted 5.19.0-syzkaller-05319-g10b62d6a38f7 #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:502 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 97 48 8a 4c 89 ee 48 c7 c7 e0 8a 48 8a e8 65 9e 37 05 <0f> 0b 83 05 e5 ae dc 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000370f6e0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: ffff8880175f5880 RSI: ffffffff81612418 RDI: fffff520006e1ece RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffffffff89eede00 R13: ffffffff8a489160 R14: ffffffff816a2220 R15: 1ffff920006e1ee7 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555567c6848 CR3: 000000001c974000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_assert_init lib/debugobjects.c:892 [inline] debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:863 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] del_timer+0x6d/0x110 kernel/time/timer.c:1257 try_to_grab_pending+0x6d/0xd0 kernel/workqueue.c:1275 __cancel_work_timer+0xa6/0x570 kernel/workqueue.c:3121 mgmt_index_removed+0x187/0x2e0 net/bluetooth/mgmt.c:8939 hci_unregister_dev+0x467/0x550 net/bluetooth/hci_core.c:2688 vhci_release+0x7c/0xf0 drivers/bluetooth/hci_vhci.c:568 __fput+0x277/0x9d0 fs/file_table.c:320 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xade/0x29d0 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x2542/0x2600 kernel/signal.c:2857 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fea5c288be7 Code: Unable to access opcode bytes at RIP 0x7fea5c288bbd. RSP: 002b:00007ffc9c71f998 EFLAGS: 00000207 ORIG_RAX: 0000000000000107 RAX: 0000000000000000 RBX: 0000000000000065 RCX: 00007fea5c288be7 RDX: 0000000000000200 RSI: 00007ffc9c720b20 RDI: 00000000ffffff9c RBP: 00007ffc9c71fa60 R08: 0000000000000000 R09: 00007ffc9c71f830 R10: 00005555567be8e3 R11: 0000000000000207 R12: 00007fea5c2e22ce R13: 00007ffc9c720b20 R14: 00005555567be810 R15: 00007ffc9c720b60