------------[ cut here ]------------
WARNING: CPU: 1 PID: 4447 at fs/btrfs/block-group.c:3505 do_chunk_alloc fs/btrfs/block-group.c:3505 [inline]
WARNING: CPU: 1 PID: 4447 at fs/btrfs/block-group.c:3505 btrfs_chunk_alloc+0xc0e/0x1020 fs/btrfs/block-group.c:3728
Modules linked in:
CPU: 1 PID: 4447 Comm: kworker/u4:7 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3505 [inline]
RIP: 0010:btrfs_chunk_alloc+0xc0e/0x1020 fs/btrfs/block-group.c:3728
Code: 00 00 00 fc ff df 4c 8b 24 24 0f 1f 44 00 00 e8 b8 d5 f1 fd eb 16 e8 b1 d5 f1 fd 48 c7 c7 20 19 ed 8a 44 89 ee e8 f2 6f bd fd <0f> 0b 48 8b 7c 24 20 48 c7 c6 20 27 ed 8a ba b1 0d 00 00 e9 8e 00
RSP: 0018:ffffc90004d7e958 EFLAGS: 00010246
RAX: 363aa9ca23718400 RBX: dffffc0000000000 RCX: ffff888021f11dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888064a80001 R08: ffffffff8166aa6c R09: ffffed10171e4f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807d713884
R13: ffffffffffffffe4 R14: ffff88806090967b R15: 1ffff1100fae2710
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000206cb000 CR3: 000000002b8e8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 find_free_extent_update_loop fs/btrfs/extent-tree.c:4039 [inline]
 find_free_extent+0x3eb7/0x4ff0 fs/btrfs/extent-tree.c:4402
 btrfs_reserve_extent+0x20a/0x540 fs/btrfs/extent-tree.c:4483
 cow_file_range+0x674/0xe10 fs/btrfs/inode.c:1181
 btrfs_run_delalloc_range+0x38b/0x1500 fs/btrfs/inode.c:2018
 writepage_delalloc+0x283/0x5a0 fs/btrfs/extent_io.c:3802
 __extent_writepage+0x57d/0xbc0 fs/btrfs/extent_io.c:4108
 extent_write_cache_pages fs/btrfs/extent_io.c:5030 [inline]
 extent_writepages+0xbbd/0x1590 fs/btrfs/extent_io.c:5157
 do_writepages+0x481/0x730 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1d6/0x230 mm/filemap.c:400
 start_delalloc_inodes+0x7df/0xca0 fs/btrfs/inode.c:10129
 btrfs_start_delalloc_roots+0x72f/0xa70 fs/btrfs/inode.c:10208
 shrink_delalloc fs/btrfs/space-info.c:538 [inline]
 flush_space+0x650/0xd50 fs/btrfs/space-info.c:646
 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>