ceph: No mds server is up or the cluster is laggy
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: CPU: 0 PID: 19916 at kernel/locking/lockdep.c:2070 print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2070
Modules linked in:
CPU: 0 UID: 0 PID: 19916 Comm: syz-executor358 Not tainted 6.11.0-rc6-syzkaller-00019-g67784a74e258 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2070
Code: 90 90 90 90 90 90 55 89 fd 53 e8 87 91 1b 03 89 c3 e8 50 fd ff ff 85 db 74 14 90 48 c7 c7 40 dc 4c 8b 89 ee e8 6d 3e 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:ffffc9000dd0f228 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff814e0d09
RDX: ffff888031fe5a00 RSI: ffffffff814e0d16 RDI: 0000000000000001
RBP: 00000000ffffffff R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: fffffffffffeae98 R12: ffff888031fe6558
R13: ffff888031fe6580 R14: ffffc9000dd0f340 R15: dffffc0000000000
FS:  00007f1db30cb6c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000280 CR3: 00000000259b8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_irq_usage+0xe4a/0x1490 kernel/locking/lockdep.c:2823
 check_prev_add kernel/locking/lockdep.c:3137 [inline]
 check_prevs_add kernel/locking/lockdep.c:3252 [inline]
 validate_chain kernel/locking/lockdep.c:3868 [inline]
 __lock_acquire+0x2503/0x3cb0 kernel/locking/lockdep.c:5142
 lock_acquire kernel/locking/lockdep.c:5759 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 update_cfs_rq_load_avg kernel/sched/fair.c:4587 [inline]
 update_load_avg+0xeec/0x20d0 kernel/sched/fair.c:4746
 put_prev_entity+0xc2/0x180 kernel/sched/fair.c:5503
 pick_next_task_fair+0x5c9/0x1220 kernel/sched/fair.c:8542
 __pick_next_task+0xc2/0x3e0 kernel/sched/core.c:5812
 pick_next_task kernel/sched/core.c:5914 [inline]
 __schedule+0x40a/0x5490 kernel/sched/core.c:6484
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5727
Code: c1 05 1a ca 98 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000dd0fa78 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92001ba1f51 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cda40 RDI: ffffffff8bb0f980
RBP: 0000000000000200 R08: 0000000000227f98 R09: fffffbfff2d577fa
R10: ffffffff96abbfd7 R11: 1ffffffff2bc42f0 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888076ef1548 R15: 0000000000000000
 touch_wq_lockdep_map+0x78/0x120 kernel/workqueue.c:3875
 __flush_workqueue+0x129/0x1200 kernel/workqueue.c:3917
 flush_fs_workqueues fs/ceph/super.c:882 [inline]
 ceph_kill_sb+0xf9/0x5a0 fs/ceph/super.c:1537
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 ceph_get_tree+0x14e1/0x1e10 fs/ceph/super.c:1362
 vfs_get_tree+0x8f/0x380 fs/super.c:1800
 vfs_cmd_create+0xd7/0x2a0 fs/fsopen.c:226
 vfs_fsconfig_locked fs/fsopen.c:290 [inline]
 __do_sys_fsconfig+0x88e/0xbe0 fs/fsopen.c:473
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1db3110419
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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:00007f1db30cb238 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f1db319a328 RCX: 00007f1db3110419
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007f1db319a320 R08: 0000000000000000 R09: 00007f1db30cb6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1db3167074
R13: 0000000000000000 R14: 00007ffe49b8d790 R15: 00007ffe49b8d878
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 05 1a ca 98 7e 83 	roll   $0x83,0x7e98ca1a(%rip)        # 0x7e98ca21
   7:	f8                   	clc
   8:	01 0f                	add    %ecx,(%rdi)
   a:	85 ea                	test   %ebp,%edx
   c:	02 00                	add    (%rax),%al
   e:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  15:	85 d5                	test   %edx,%ebp
  17:	02 00                	add    (%rax),%al
  19:	00 48 85             	add    %cl,-0x7b(%rax)
  1c:	ed                   	in     (%dx),%eax
  1d:	74 01                	je     0x20
  1f:	fb                   	sti
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 01 c3             	add    %rax,%rbx <-- trapping instruction
  2d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  34:	48 c7 43 08 00 00 00 	movq   $0x0,0x8(%rbx)
  3b:	00
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24