BTRFS critical (device loop4): entry offset 1056768, bytes 4186112, bitmap no
BTRFS info (device loop4): block group has cluster?: no
BTRFS info (device loop4): 0 blocks of free space at or bigger than bytes is
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4293 at fs/btrfs/block-group.c:3715 do_chunk_alloc fs/btrfs/block-group.c:3715 [inline]
WARNING: CPU: 1 PID: 4293 at fs/btrfs/block-group.c:3715 btrfs_chunk_alloc+0xdab/0x1010 fs/btrfs/block-group.c:3957
Modules linked in:
CPU: 1 PID: 4293 Comm: kworker/u4:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3715 [inline]
RIP: 0010:btrfs_chunk_alloc+0xdab/0x1010 fs/btrfs/block-group.c:3957
Code: fd 48 c7 c7 00 94 d1 8a 89 ee e8 60 b9 c8 fd 0f 0b e9 44 fd ff ff e8 e4 8e fc fd 48 c7 c7 00 94 d1 8a 44 89 f6 e8 45 b9 c8 fd <0f> 0b e9 89 fd ff ff e8 c9 8e fc fd 48 c7 c7 00 94 d1 8a 89 ee e8
RSP: 0018:ffffc90004247998 EFLAGS: 00010246
RAX: 0d7720fd3da57a00 RBX: ffff888058bc4001 RCX: ffff88802fe71dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10171e4f34
R10: ffffed10171e4f34 R11: 1ffff110171e4f33 R12: ffff888057728000
R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff8880576d0800
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9aba07d000 CR3: 000000005e761000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 flush_space+0x94d/0xd80 fs/btrfs/space-info.c:766
 btrfs_async_reclaim_metadata_space+0x26f/0x330 fs/btrfs/space-info.c:1080
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>