BTRFS error (device loop4): allocation failed flags 2, wanted 4096 tree-log 0, relocation: 0
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BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5240 at fs/btrfs/block-group.c:3839 do_chunk_alloc fs/btrfs/block-group.c:3839 [inline]
WARNING: CPU: 0 PID: 5240 at fs/btrfs/block-group.c:3839 btrfs_chunk_alloc+0xedb/0xfa0 fs/btrfs/block-group.c:4081
Modules linked in:
CPU: 0 PID: 5240 Comm: kworker/u4:3 Not tainted 6.6.0-syzkaller-16039-gac347a0655db #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3839 [inline]
RIP: 0010:btrfs_chunk_alloc+0xedb/0xfa0 fs/btrfs/block-group.c:4081
Code: fd 48 c7 c7 60 41 ad 8b 44 89 e6 e8 bf 37 9a fd 0f 0b e9 1d fe ff ff e8 13 80 d4 fd 48 c7 c7 60 41 ad 8b 89 ee e8 a5 37 9a fd <0f> 0b e9 28 fe ff ff e8 f9 7f d4 fd 48 c7 c7 60 41 ad 8b 44 89 e6
RSP: 0018:ffffc90004d57968 EFLAGS: 00010246
RAX: ebf91ccdb1335500 RBX: ffff8880722e8001 RCX: ffff888071d95940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffffffffffffe4 R08: ffffffff81547c82 R09: 1ffff920009aae80
R10: dffffc0000000000 R11: fffff520009aae81 R12: ffff888077da5800
R13: dffffc0000000000 R14: ffff88801e856000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3011ac2723 CR3: 0000000016f21000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 flush_space+0x4d6/0xce0 fs/btrfs/space-info.c:784
 btrfs_async_reclaim_metadata_space+0x29f/0x350 fs/btrfs/space-info.c:1089
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
 worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>