------------[ cut here ]------------
WARNING: CPU: 1 PID: 9 at fs/btrfs/extent-tree.c:2158 btrfs_run_delayed_refs+0x413/0x490 fs/btrfs/extent-tree.c:2158
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:btrfs_run_delayed_refs+0x413/0x490 fs/btrfs/extent-tree.c:2158
Code: eb 0c e8 e0 7b 1b fe eb 23 e8 d9 7b 1b fe 66 90 e8 d2 7b 1b fe eb 15 e8 cb 7b 1b fe 48 c7 c7 60 98 ea 8a 89 ee e8 cd 10 e7 fd <0f> 0b 4c 89 e7 48 c7 c6 80 9b ea 8a ba 6e 08 00 00 89 e9 e8 15 ca
RSP: 0018:ffffc90000ce79f0 EFLAGS: 00010246
RAX: 0c7bf228fff51200 RBX: 0000000000000000 RCX: ffff88813ff90000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 00000000ffffffe4 R08: ffffffff8166be4c R09: ffffed10171e4f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888073987840
R13: dffffc0000000000 R14: ffff888078dcc001 R15: ffff88807ad15000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb54f90bd0 CR3: 0000000062c06000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 flush_space+0x9f5/0xd50 fs/btrfs/space-info.c:660
 btrfs_async_reclaim_metadata_space+0x29b/0x340 fs/btrfs/space-info.c:953
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>