------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/block-group.c:4105 at do_chunk_alloc fs/btrfs/block-group.c:4105 [inline], CPU#0: kworker/u8:10/3928
WARNING: fs/btrfs/block-group.c:4105 at btrfs_chunk_alloc+0x1029/0x15f0 fs/btrfs/block-group.c:4346, CPU#0: kworker/u8:10/3928
Modules linked in:
CPU: 0 UID: 0 PID: 3928 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:4105 [inline]
RIP: 0010:btrfs_chunk_alloc+0x102b/0x15f0 fs/btrfs/block-group.c:4346
Code: cb f0 bb fd e9 6d 01 00 00 e8 41 f3 a0 fd 84 c0 74 22 e8 b8 f0 bb fd e9 5a 01 00 00 e8 ae f0 bb fd 48 8d 3d 07 07 6b 0b 89 de <67> 48 0f b9 3a e9 b3 fc ff ff e8 d6 04 1a 07 41 89 c6 31 ff 89 c6
RSP: 0018:ffffc9000f47f6f0 EFLAGS: 00010293
RAX: ffffffff84086322 RBX: ffffffffffffffe4 RCX: ffff888034cd5b80
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8f736a30
RBP: 0000000000000000 R08: ffff888034cd5b80 R09: 0000000000000003
R10: 0000000000000100 R11: 00000000fffffffb R12: 1ffff1100bbbc31e
R13: ffff88806090e768 R14: ffff88806769c001 R15: ffff888039a9d800
FS:  0000000000000000(0000) GS:ffff88812633f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e9c0ae000 CR3: 000000003f998000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 flush_space+0x353/0xd80 fs/btrfs/space-info.c:896
 do_async_reclaim_metadata_space+0x411/0x970 fs/btrfs/space-info.c:1187
 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1254
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	cb                   	lret
   1:	f0 bb fd e9 6d 01    	lock mov $0x16de9fd,%ebx
   7:	00 00                	add    %al,(%rax)
   9:	e8 41 f3 a0 fd       	call   0xfda0f34f
   e:	84 c0                	test   %al,%al
  10:	74 22                	je     0x34
  12:	e8 b8 f0 bb fd       	call   0xfdbbf0cf
  17:	e9 5a 01 00 00       	jmp    0x176
  1c:	e8 ae f0 bb fd       	call   0xfdbbf0cf
  21:	48 8d 3d 07 07 6b 0b 	lea    0xb6b0707(%rip),%rdi        # 0xb6b072f
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 b3 fc ff ff       	jmp    0xfffffce7
  34:	e8 d6 04 1a 07       	call   0x71a050f
  39:	41 89 c6             	mov    %eax,%r14d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi