------------[ cut here ]------------
WARNING: CPU: 1 PID: 4171 at fs/btrfs/extent-tree.c:3067 __btrfs_free_extent+0x974/0x2100 fs/btrfs/extent-tree.c:3067
Modules linked in:
CPU: 1 PID: 4171 Comm: kworker/u4:8 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __btrfs_free_extent+0x974/0x2100 fs/btrfs/extent-tree.c:3067
lr : __btrfs_free_extent+0x974/0x2100 fs/btrfs/extent-tree.c:3067
sp : ffff8000204172a0
x29: ffff800020417440 x28: 0000000000000000 x27: ffff0000d14f3420
x26: 00000000ffffffe4 x25: 0000000000000001 x24: fffffffffffffff7
x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000c82cd9d0
x20: 0000000000000000 x19: ffff0000e9861580 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b54788 x15: 00000000ffffffff
x14: ffff0000c7913680 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 1de59fff2832c800
x8 : 1de59fff2832c800 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020416a18 x4 : ffff800014c4fec0 x3 : ffff8000085597fc
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 __btrfs_free_extent+0x974/0x2100 fs/btrfs/extent-tree.c:3067
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1692 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1716 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1962 [inline]
 __btrfs_run_delayed_refs+0xdd0/0x3d50 fs/btrfs/extent-tree.c:2025
 btrfs_run_delayed_refs+0x11c/0x47c fs/btrfs/extent-tree.c:2156
 flush_space+0x890/0xc94 fs/btrfs/space-info.c:660
 btrfs_async_reclaim_metadata_space+0x6c8/0x80c fs/btrfs/space-info.c:953
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 process_scheduled_works kernel/workqueue.c:2373 [inline]
 worker_thread+0xb88/0x1034 kernel/workqueue.c:2459
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 644724
hardirqs last  enabled at (644723): [<ffff80000832ea28>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (644724): [<ffff800011b4fe3c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (643376): [<ffff8000081b90b8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (643376): [<ffff8000081b90b8>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (643369): [<ffff8000081b9750>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (643369): [<ffff8000081b9750>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (643369): [<ffff8000081b9750>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (643369): [<ffff8000081b9750>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace a237347706b8f978 ]---
BTRFS: error (device loop0) in __btrfs_free_extent:3067: errno=-28 No space left
BTRFS error (device loop0): failed to run delayed ref for logical 5242880 num_bytes 4096 type 176 action 2 ref_mod 1: -28
BTRFS: error (device loop0) in btrfs_run_delayed_refs:2158: errno=-28 No space left