Anatol Belski 9e2e85a48f block: qcow: Fix refcount leak when refcount blocks are replaced ...

When a refcount block is evicted from cache and replaced with a new
one, the old refcount block cluster was added to unref_clusters but
its refcount was never decremented to 0 on disk. This left the cluster
with refcount=1 while no metadata referenced it, causing errors in
qemu-img check

`Leaked cluster X refcount=1 reference=0`

This fix recursively calls set_cluster_refcount(freed_cluster, 0) to
properly decrement the freed refcount block's refcount on disk. The
recursion handles cascading replacements where freeing one refcount
block may trigger the replacement of another.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>

2025-12-05 15:38:55 +00:00

..

src

block: qcow: Fix refcount leak when refcount blocks are replaced

2025-12-05 15:38:55 +00:00

Cargo.toml

build: Bump the non-rust-vmm group across 2 directories with 38 updates

2025-11-25 11:12:36 +00:00