ceph: No mds server is up or the cluster is laggy
------------[ cut here ]------------
ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 26300 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 26300 Comm: syz-executor.4 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 80 40 e4 89 4c 89 ee 48 c7 c7 80 34 e4 89 e8 bd 1f 15 05 <0f> 0b 83 05 b5 17 90 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc90016cbf660 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: ffff88802c915580 RSI: ffffffff815e9da8 RDI: fffff52002d97ebe
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e3b4e R11: 0000000000000000 R12: ffffffff898de520
R13: ffffffff89e43b00 R14: ffffffff81659a50 R15: 1ffff92002d97ed7
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffbf49d3c8 CR3: 0000000019e47000 CR4: 0000000000350ef0
Call Trace:
 debug_object_assert_init lib/debugobjects.c:895 [inline]
 debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:866
 debug_timer_assert_init kernel/time/timer.c:739 [inline]
 debug_assert_init kernel/time/timer.c:784 [inline]
 del_timer+0x6d/0x110 kernel/time/timer.c:1204
 try_to_grab_pending+0x6d/0xd0 kernel/workqueue.c:1270
 __cancel_work kernel/workqueue.c:3258 [inline]
 cancel_delayed_work+0x79/0x340 kernel/workqueue.c:3287
 l2cap_clear_timer include/net/bluetooth/l2cap.h:883 [inline]
 l2cap_chan_del+0x517/0xa80 net/bluetooth/l2cap_core.c:665
 l2cap_conn_del+0x3c0/0x7b0 net/bluetooth/l2cap_core.c:1898
 l2cap_disconn_cfm net/bluetooth/l2cap_core.c:8177 [inline]
 l2cap_disconn_cfm+0x95/0xd0 net/bluetooth/l2cap_core.c:8170
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1518 [inline]
 hci_conn_hash_flush+0x127/0x260 net/bluetooth/hci_conn.c:1608
 hci_dev_do_close+0x57d/0x1130 net/bluetooth/hci_core.c:1793
 hci_unregister_dev+0x1c0/0x5a0 net/bluetooth/hci_core.c:4029
 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:340
 __fput+0x288/0x9f0 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xbae/0x2a30 kernel/exit.c:825
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x47f/0x21d0 kernel/signal.c:2855
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6d4c912a39
Code: Unable to access opcode bytes at RIP 0x7f6d4c912a0f.
RSP: 002b:00007f6d49e67188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffff8f RBX: 00007f6d4ca16020 RCX: 00007f6d4c912a39
RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 0000000020000480
RBP: 00007f6d4c96ce8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe11721a2f R14: 00007f6d49e67300 R15: 0000000000022000