------------[ cut here ]------------
WARNING: CPU: 0 PID: 136 at fs/btrfs/block-group.c:3509 do_chunk_alloc fs/btrfs/block-group.c:3509 [inline]
WARNING: CPU: 0 PID: 136 at fs/btrfs/block-group.c:3509 btrfs_chunk_alloc+0xa70/0xeb4 fs/btrfs/block-group.c:3732
Modules linked in:
CPU: 0 PID: 136 Comm: kworker/u4:1 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 : ffff80001bd96950
x29: ffff80001bd969a0 x28: 1fffe0001ba558cf x27: ffff0000dd2ac67b
x26: ffffffffffffffe4 x25: dfff800000000000 x24: ffff0000dd2ac630
x23: ffff0000d9c6c000 x22: ffff0000db629884 x21: ffff0000c1e20000
x20: ffff0000db629800 x19: ffff0000db629888 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111a97c4 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 58338aa8c5ceab00
x8 : 58338aa8c5ceab00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001bd96238 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: 661152
hardirqs last  enabled at (661151): [<ffff8000082f7764>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (661152): [<ffff8000111a5098>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (661038): [<ffff80000819d1e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (661038): [<ffff80000819d1e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (661023): [<ffff80000819d7ec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (661023): [<ffff80000819d7ec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (661023): [<ffff80000819d7ec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (661023): [<ffff80000819d7ec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 4d6e3b876a29d170 ]---
BTRFS: error (device loop0) in do_chunk_alloc:3509: errno=-28 No space left
BTRFS info (device loop0): forced readonly
BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2447: errno=-28 No space left