BTRFS error (device loop0): allocation failed flags 4, wanted 4096 tree-log 0, relocation: 0
BTRFS info (device loop0): space_info DATA+METADATA (sub-group id 0) has -4227072 free, is full
BTRFS info (device loop0): space_info total=11534336, used=3670016, pinned=712704, reserved=7151616, may_use=4227072, readonly=0 zone_unusable=0
BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1441792
BTRFS info (device loop0): trans_block_rsv: size 0 reserved 0
BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0
BTRFS info (device loop0): remap_block_rsv: size 0 reserved 0
BTRFS info (device loop0): delayed_block_rsv: size 32768 reserved 32768
BTRFS info (device loop0): delayed_refs_rsv: size 2588672 reserved 2588672
BTRFS info (device loop0): block group 5242880 has 1638400 bytes, 1294336 used 344064 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (0 bytes available) 
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): block group 6881280 has 1638400 bytes, 1638400 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (0 bytes available) 
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): block group 8519680 has 8257536 bytes, 737280 used 368640 pinned 1208320 reserved 65536 delalloc 0 super 0 zone_unusable (5943296 bytes available) 
BTRFS critical (device loop0): entry offset 10833920, bytes 5943296, bitmap no
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 1 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): 5943296 bytes available across all block groups
------------[ cut here ]------------
btrfs_abort_should_print_stack(__error)
WARNING: fs/btrfs/inode.c:3128 at btrfs_finish_one_ordered+0x1e88/0x1f00 fs/btrfs/inode.c:3128, CPU#0: kworker/u4:1/13
Modules linked in:
CPU: 0 UID: 0 PID: 13 Comm: kworker/u4:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_finish_one_ordered+0x1e88/0x1f00 fs/btrfs/inode.c:3128
Code: 3e 25 b4 fd 90 0f 0b 90 48 8b 44 24 10 89 c1 f7 d9 e9 cd fb ff ff e8 27 25 b4 fd eb 10 e8 20 25 b4 fd eb 09 e8 19 25 b4 fd 90 <0f> 0b 90 48 8b 44 24 10 89 c1 f7 d9 e9 23 fc ff ff e8 02 25 b4 fd
RSP: 0018:ffffc9000026f880 EFLAGS: 00010293
RAX: ffffffff84125cb7 RBX: 00000000ffffffe4 RCX: ffff88801b7d8000
RDX: 0000000000000000 RSI: ffffffff8f1c86f0 RDI: 00000000ffffffe4
RBP: ffffc9000026fa50 R08: ffff88801b7d8000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 0000000000000000
R13: ffff888013214ad0 R14: ffff888013206060 R15: 1ffff110023ae62b
FS:  0000000000000000(0000) GS:ffff88808c546000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1fba15fe8 CR3: 000000001ace8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_work_helper+0x3a2/0xc50 fs/btrfs/async-thread.c:312
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>