BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): 4190208 bytes available across all block groups
------------[ cut here ]------------
btrfs_abort_should_print_stack(__error)
WARNING: fs/btrfs/block-group.c:3865 at do_chunk_alloc fs/btrfs/block-group.c:3865 [inline], CPU#1: kworker/u8:28/9590
WARNING: fs/btrfs/block-group.c:3865 at btrfs_chunk_alloc+0x1313/0x1550 fs/btrfs/block-group.c:4106, CPU#1: kworker/u8:28/9590
Modules linked in:
CPU: 1 UID: 0 PID: 9590 Comm: kworker/u8:28 Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: events_unbound btrfs_async_reclaim_data_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3865 [inline]
RIP: 0010:btrfs_chunk_alloc+0x1313/0x1550 fs/btrfs/block-group.c:4106
Code: 8d f0 ff ff be 08 00 00 00 4c 89 e7 e8 46 3e f1 fd e9 7b f0 ff ff e8 ac 29 7a fd eb 10 e8 a5 29 7a fd eb 09 e8 9e 29 7a fd 90 <0f> 0b 90 44 89 f9 f7 d9 49 bd 00 00 00 00 00 fc ff df e9 a1 fc ff
RSP: 0018:ffffc900038277a0 EFLAGS: 00010293
RAX: ffffffff844eefb2 RBX: ffff888055b2a998 RCX: ffff888036413e80
RDX: 0000000000000000 RSI: ffffffff90823720 RDI: 00000000ffffffe4
RBP: 00000000ffffff01 R08: ffff888036413e80 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: ffff8880553a81d8
R13: dffffc0000000000 R14: ffff888043a40000 R15: ffffffffffffffe4
FS:  0000000000000000(0000) GS:ffff88812350d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c373778 CR3: 0000000076a38000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001fb DR2: ffffffffffffffff
DR3: 0000000000008001 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 flush_space+0x3df/0xde0 fs/btrfs/space-info.c:908
 do_async_reclaim_data_space+0x137/0x550 fs/btrfs/space-info.c:1455
 btrfs_async_reclaim_data_space+0x41/0x90 fs/btrfs/space-info.c:1519
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 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>