BTRFS warning (device loop4): Skipping commit of aborted transaction.
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BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 26 at fs/btrfs/transaction.c:2023 btrfs_commit_transaction+0x2f67/0x3950
Modules linked in:
CPU: 0 UID: 0 PID: 26 Comm: kworker/u9:0 Not tainted syzkaller #0 PREEMPT(full) 
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:btrfs_commit_transaction+0x2f67/0x3950
Code: ef 5a df fd 84 c0 74 2b e8 46 a9 f8 fd eb 73 e8 3f a9 f8 fd 90 48 c7 c7 20 bf cd 8b 8b 5c 24 18 89 de e8 4c 45 bc fd 89 d9 90 <0f> 0b 90 90 e9 1a 01 00 00 e8 eb c9 b2 07 89 c3 31 ff 89 c6 e8 50
RSP: 0018:ffffc900001ef500 EFLAGS: 00010246
RAX: d028c6cae7eb1000 RBX: 00000000ffffffe4 RCX: 00000000ffffffe4
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc900001ef830 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffff88801caa1278
R13: ffff888123f94000 R14: ffff888123f94000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8618000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd6f794dfc8 CR3: 00000001169b2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 flush_space+0x48b/0xcd0
 do_async_reclaim_metadata_space+0x144/0x390
 btrfs_async_reclaim_metadata_space+0x89/0xe0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
