------------[ cut here ]------------
WARNING: CPU: 0 PID: 453 at fs/btrfs/block-group.c:3509 do_chunk_alloc fs/btrfs/block-group.c:3509 [inline]
WARNING: CPU: 0 PID: 453 at fs/btrfs/block-group.c:3509 btrfs_chunk_alloc+0xa70/0xeb4 fs/btrfs/block-group.c:3732
Modules linked in:
CPU: 0 PID: 453 Comm: kworker/u4:5 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : do_chunk_alloc fs/btrfs/block-group.c:3509 [inline]
pc : btrfs_chunk_alloc+0xa70/0xeb4 fs/btrfs/block-group.c:3732
lr : do_chunk_alloc fs/btrfs/block-group.c:3509 [inline]
lr : btrfs_chunk_alloc+0xa70/0xeb4 fs/btrfs/block-group.c:3732
sp : ffff80001fc46950
x29: ffff80001fc469a0 x28: 1fffe0001b9ddce5 x27: ffff0000dceee72b
x26: ffffffffffffffe4 x25: dfff800000000000 x24: ffff0000dceee6e0
x23: ffff0000e4d40000 x22: ffff0000d3dee884 x21: ffff0000d6ab4800
x20: ffff0000d3dee800 x19: ffff0000d3dee888 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111a97c4 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 9bc486a21249cb00
x8 : 9bc486a21249cb00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001fc46238 x4 : ffff80001423f280 x3 : ffff800008503958
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 do_chunk_alloc fs/btrfs/block-group.c:3509 [inline]
 btrfs_chunk_alloc+0xa70/0xeb4 fs/btrfs/block-group.c:3732
 find_free_extent_update_loop fs/btrfs/extent-tree.c:4054 [inline]
 find_free_extent+0x23ec/0x316c fs/btrfs/extent-tree.c:4417
 btrfs_reserve_extent+0x194/0x428 fs/btrfs/extent-tree.c:4498
 cow_file_range+0x50c/0x9cc fs/btrfs/inode.c:1181
 btrfs_run_delalloc_range+0x318/0x119c fs/btrfs/inode.c:2018
 writepage_delalloc+0x124/0x320 fs/btrfs/extent_io.c:3801
 __extent_writepage+0x60c/0xbfc fs/btrfs/extent_io.c:4107
 extent_write_cache_pages fs/btrfs/extent_io.c:5029 [inline]
 extent_writepages+0x8f4/0x10b4 fs/btrfs/extent_io.c:5156
 btrfs_writepages+0x28/0x38 fs/btrfs/inode.c:8631
 do_writepages+0x36c/0x578 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1d4/0x234 mm/filemap.c:400
 start_delalloc_inodes+0x588/0x91c fs/btrfs/inode.c:10127
 btrfs_start_delalloc_roots+0x494/0x680 fs/btrfs/inode.c:10206
 shrink_delalloc fs/btrfs/space-info.c:538 [inline]
 flush_space+0x52c/0xbd8 fs/btrfs/space-info.c:646
 btrfs_async_reclaim_metadata_space+0x678/0x7b0 fs/btrfs/space-info.c:953
 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 3013404
hardirqs last  enabled at (3013403): [<ffff8000082f7764>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (3013404): [<ffff8000111a5098>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (3012966): [<ffff800010aedbe0>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last  enabled at (3012966): [<ffff800010aedbe0>] ieee80211_ibss_work+0x2a4/0xd60 net/mac80211/ibss.c:1706
softirqs last disabled at (3012964): [<ffff800010aeda0c>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (3012964): [<ffff800010aeda0c>] ieee80211_ibss_work+0xd0/0xd60 net/mac80211/ibss.c:1695
---[ end trace d62f5fcf1cedf0b0 ]---
BTRFS: error (device loop4) in do_chunk_alloc:3509: errno=-28 No space left
BTRFS info (device loop4): forced readonly
BTRFS: error (device loop4) in btrfs_create_pending_block_groups:2447: errno=-28 No space left