BUG: unable to handle page fault for address: ffffffff00000018
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD d97e067 P4D d97e067 PUD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 1086 Comm: kworker/u32:6 Not tainted 6.10.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:__lock_acquire+0xe48/0x3b30 kernel/locking/lockdep.c:5005
Code: 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 82 1f 00 00 <49> 81 3c 24 e0 fd e2 92 0f 84 98 f2 ff ff 41 83 fe 01 0f 87 a0 f2
RSP: 0018:ffffc900073aec78 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1fffffffe0000003 RSI: ffff888020382440 RDI: ffffffff00000018
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe2c097 R11: 0000000000000008 R12: ffffffff00000018
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff00000018 CR3: 0000000045724000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 __queue_work+0x39e/0x1020 kernel/workqueue.c:2319
 queue_work_on+0x11a/0x140 kernel/workqueue.c:2410
 btrfs_cache_block_group+0x549/0x820 fs/btrfs/block-group.c:962
 find_free_extent+0x36a1/0x6820 fs/btrfs/extent-tree.c:4507
 btrfs_reserve_extent+0x333/0x6b0 fs/btrfs/extent-tree.c:4689
 btrfs_alloc_tree_block+0x20e/0x11a0 fs/btrfs/extent-tree.c:5145
 btrfs_force_cow_block+0x3e5/0x19e0 fs/btrfs/ctree.c:568
 btrfs_cow_block+0x2b6/0xb70 fs/btrfs/ctree.c:746
 btrfs_search_slot+0x11bd/0x3010 fs/btrfs/ctree.c:2101
 btrfs_update_device+0x142/0x540 fs/btrfs/volumes.c:2902
 btrfs_chunk_alloc_add_chunk_item+0x306/0xf70 fs/btrfs/volumes.c:5810
 do_chunk_alloc fs/btrfs/block-group.c:3851 [inline]
 btrfs_chunk_alloc+0x4ba/0x1190 fs/btrfs/block-group.c:4139
 flush_space+0x96d/0xdd0 fs/btrfs/space-info.c:783
 btrfs_async_reclaim_metadata_space+0x3cd/0x980 fs/btrfs/space-info.c:1088
 process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
CR2: ffffffff00000018
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xe48/0x3b30 kernel/locking/lockdep.c:5005
Code: 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 82 1f 00 00 <49> 81 3c 24 e0 fd e2 92 0f 84 98 f2 ff ff 41 83 fe 01 0f 87 a0 f2
RSP: 0018:ffffc900073aec78 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1fffffffe0000003 RSI: ffff888020382440 RDI: ffffffff00000018
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe2c097 R11: 0000000000000008 R12: ffffffff00000018
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff00000018 CR3: 0000000045724000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	be 05 00 00 ba       	mov    $0xba000005,%esi
   5:	01 00                	add    %eax,(%rax)
   7:	00 00                	add    %al,(%rax)
   9:	e9 e4 00 00 00       	jmp    0xf2
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	4c 89 e2             	mov    %r12,%rdx
  1b:	48 c1 ea 03          	shr    $0x3,%rdx
  1f:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  23:	0f 85 82 1f 00 00    	jne    0x1fab
* 29:	49 81 3c 24 e0 fd e2 	cmpq   $0xffffffff92e2fde0,(%r12) <-- trapping instruction
  30:	92
  31:	0f 84 98 f2 ff ff    	je     0xfffff2cf
  37:	41 83 fe 01          	cmp    $0x1,%r14d
  3b:	0f                   	.byte 0xf
  3c:	87                   	.byte 0x87
  3d:	a0                   	.byte 0xa0
  3e:	f2                   	repnz