Anatol Belski efad6578d1 block: qcow: Fix refcount leak when converting compressed clusters ...

When converting a compressed cluster to standard during write
operations, the old compressed cluster's refcount was never
decremented, causing leak warnings by `qemu-img check ..`

`Leaked cluster X refcount=N reference=M`

Additionally, compressed data can span multiple physical clusters,
not just one. The compressed cluster address and size are encoded
in the L2 entry, and the data may cross cluster boundaries.

The proper handling is implemented as follows:
- Extract compressed cluster address and size before overwriting
  L2 entry
- Identify all clusters occupied by the compressed data
- Decrement refcount for each cluster in the range

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

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

..

src

block: qcow: Fix refcount leak when converting compressed clusters

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