------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/block-group.c:4012 at do_chunk_alloc fs/btrfs/block-group.c:4012 [inline], CPU#0: kworker/u4:8/1053
WARNING: fs/btrfs/block-group.c:4012 at btrfs_chunk_alloc+0x101d/0x15d0 fs/btrfs/block-group.c:4253, CPU#0: kworker/u4:8/1053
Modules linked in:
CPU: 0 UID: 0 PID: 1053 Comm: kworker/u4:8 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound btrfs_async_reclaim_data_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:4012 [inline]
RIP: 0010:btrfs_chunk_alloc+0x101f/0x15d0 fs/btrfs/block-group.c:4253
Code: 37 2e c9 fd e9 6d 01 00 00 e8 cd 07 af fd 84 c0 74 22 e8 24 2e c9 fd e9 5a 01 00 00 e8 1a 2e c9 fd 48 8d 3d 63 04 b3 0b 89 de <67> 48 0f b9 3a e9 b3 fc ff ff e8 c2 25 65 07 41 89 c6 31 ff 89 c6
RSP: 0018:ffffc9000352f6f0 EFLAGS: 00010293
RAX: ffffffff83f89286 RBX: ffffffffffffffe4 RCX: ffff88803319c980
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8fab96f0
RBP: 0000000000000000 R08: ffff88803319c980 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 1ffff11003db3716
R13: ffff88801265a500 R14: ffff888038110001 R15: ffff888038cd5800
FS:  0000000000000000(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7de77cfc8 CR3: 0000000036c1c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 flush_space+0x355/0xd20 fs/btrfs/space-info.c:894
 do_async_reclaim_data_space+0x145/0x520 fs/btrfs/space-info.c:1421
 btrfs_async_reclaim_data_space+0x41/0x90 fs/btrfs/space-info.c:1485
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	2e c9                	cs leave
   2:	fd                   	std
   3:	e9 6d 01 00 00       	jmp    0x175
   8:	e8 cd 07 af fd       	call   0xfdaf07da
   d:	84 c0                	test   %al,%al
   f:	74 22                	je     0x33
  11:	e8 24 2e c9 fd       	call   0xfdc92e3a
  16:	e9 5a 01 00 00       	jmp    0x175
  1b:	e8 1a 2e c9 fd       	call   0xfdc92e3a
  20:	48 8d 3d 63 04 b3 0b 	lea    0xbb30463(%rip),%rdi        # 0xbb3048a
  27:	89 de                	mov    %ebx,%esi
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e9 b3 fc ff ff       	jmp    0xfffffce6
  33:	e8 c2 25 65 07       	call   0x76525fa
  38:	41 89 c6             	mov    %eax,%r14d
  3b:	31 ff                	xor    %edi,%edi
  3d:	89 c6                	mov    %eax,%esi