ceph: No mds server is up or the cluster is laggy
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: CPU: 0 PID: 20949 at kernel/locking/lockdep.c:2071 print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2071
Modules linked in:
CPU: 0 PID: 20949 Comm: syz-executor.3 Not tainted 6.10.0-rc3-syzkaller-g83a7eefedc9b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2071
Code: 90 90 90 90 90 90 55 53 89 fb e8 f7 51 30 03 89 c5 e8 20 1b ff ff 85 ed 74 14 90 48 c7 c7 e0 d2 ca 8b 89 de e8 9d 55 e5 ff 90 <0f> 0b 90 90 5b 5d c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000a9a6ee8 EFLAGS: 00010046
RAX: 339492bce4691600 RBX: 00000000ffffffff RCX: ffff88802b0e8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff81585742 R09: 1ffff1101728519a
R10: dffffc0000000000 R11: ffffed101728519b R12: dffffc0000000001
R13: ffffffff940d5358 R14: ffffffff92cac468 R15: ffffffff9410b4b8
FS:  00007ffbd6dd66c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10deda80c0 CR3: 000000002fbfe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_irq_usage kernel/locking/lockdep.c:2806 [inline]
 check_prev_add kernel/locking/lockdep.c:3138 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain+0x47f5/0x5900 kernel/locking/lockdep.c:3869
 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 do_write_seqcount_begin_nested include/linux/seqlock.h:469 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:495 [inline]
 psi_group_change+0x113/0x12d0 kernel/sched/psi.c:787
 psi_task_switch+0x199/0x770 kernel/sched/psi.c:938
 psi_sched_switch kernel/sched/stats.h:185 [inline]
 __schedule+0x249d/0x49d0 kernel/sched/core.c:6740
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 ba 3a 86 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000a9a7920 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001534f30 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1f1ec0
RBP: ffffc9000a9a7a68 R08: ffffffff94013bdf R09: 1ffffffff280277b
R10: dffffc0000000000 R11: fffffbfff280277c R12: 1ffff92001534f2c
R13: dffffc0000000000 R14: ffffc9000a9a7980 R15: 0000000000000246
 touch_wq_lockdep_map kernel/workqueue.c:3879 [inline]
 __flush_workqueue+0x1c9/0x1710 kernel/workqueue.c:3921
 flush_fs_workqueues fs/ceph/super.c:882 [inline]
 ceph_kill_sb+0xe1/0x4b0 fs/ceph/super.c:1536
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 ceph_get_tree+0x9a9/0x17b0 fs/ceph/super.c:1361
 vfs_get_tree+0x90/0x2a0 fs/super.c:1780
 vfs_cmd_create+0xe4/0x230 fs/fsopen.c:230
 __do_sys_fsconfig fs/fsopen.c:476 [inline]
 __se_sys_fsconfig+0x967/0xec0 fs/fsopen.c:349
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffbd607dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffbd6dd60c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007ffbd61abf80 RCX: 00007ffbd607dda9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007ffbd60ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ffbd61abf80 R15: 00007ffcc3fd11a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	2b 00                	sub    (%rax),%eax
   2:	74 08                	je     0xc
   4:	4c 89 f7             	mov    %r14,%rdi
   7:	e8 ba 3a 86 00       	call   0x863ac6
   c:	f6 44 24 61 02       	testb  $0x2,0x61(%rsp)
  11:	0f 85 85 01 00 00    	jne    0x19c
  17:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 40 0e 36 	movq   $0x45e0360e,0x40(%rsp)
  28:	e0 45
* 2a:	4b c7 44 25 00 00 00 	movq   $0x0,0x0(%r13,%r12,1) <-- trapping instruction
  31:	00 00
  33:	43 c7 44 25 09 00 00 	movl   $0x0,0x9(%r13,%r12,1)
  3a:	00 00
  3c:	43                   	rex.XB
  3d:	c7                   	.byte 0xc7
  3e:	44                   	rex.R
  3f:	25                   	.byte 0x25