IPVS: ftp: loaded support on port[0] = 21 Bluetooth: hci0: command 0x0409 tx timeout Bluetooth: hci0: command 0x041b tx timeout ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) WARNING: CPU: 0 PID: 6500 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 lib/debugobjects.c:325 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6500 Comm: syz-executor440 Not tainted 4.19.137-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+0x1fc/0x2fe lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x61 kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:325 Code: dd 40 14 cb 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 40 14 cb 87 48 c7 c7 c0 09 cb 87 e8 1b 09 dd fd <0f> 0b 83 05 23 09 4e 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 RSP: 0018:ffff8880905374d8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154cf41 RDI: ffffed10120a6e8d RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8ad3601b R12: ffffffff88da08e0 R13: ffffffff815a2b10 R14: ffff888088d252e8 R15: 1ffff110120a6ea6 debug_object_assert_init lib/debugobjects.c:694 [inline] debug_object_assert_init+0x1f0/0x2e0 lib/debugobjects.c:665 debug_timer_assert_init kernel/time/timer.c:732 [inline] debug_assert_init kernel/time/timer.c:784 [inline] del_timer+0x6d/0x100 kernel/time/timer.c:1209 try_to_grab_pending+0x2b6/0x6f0 kernel/workqueue.c:1223 __cancel_work kernel/workqueue.c:3103 [inline] cancel_delayed_work+0x76/0x2c0 kernel/workqueue.c:3132 l2cap_clear_timer include/net/bluetooth/l2cap.h:832 [inline] l2cap_chan_del+0x53a/0x8e0 net/bluetooth/l2cap_core.c:638 l2cap_chan_close+0x108/0x820 net/bluetooth/l2cap_core.c:754 l2cap_sock_shutdown+0x85e/0xbd0 net/bluetooth/l2cap_sock.c:1159 l2cap_sock_release+0x63/0x190 net/bluetooth/l2cap_sock.c:1201 __sock_release+0xcd/0x2a0 net/socket.c:579 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbb2/0x2b70 kernel/exit.c:887 do_group_exit+0x125/0x310 kernel/exit.c:990 get_signal+0x3f2/0x1f70 kernel/signal.c:2588 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446d89 Code: Bad RIP value. RSP: 002b:00007ffc562dc7c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 00007ffc562dc800 R08: 0000000000000000 R09: 00000000000000ff R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..