Dylan Reid 7796c49afd block: AlignedOperation owns its bounce buffer via Drop ...

The bounce buffer for an unaligned descriptor was allocated in
execute_async and leaked on error paths, even though, for the sync
case the kernel already had a pointer to the buffer.

Clean this up by moving ownership of the buffer to the
AlignedOperation type. To make it actually safe, stop stashing a
guest memory pointer for the duration of the op. Instead, save the
guest address and pass guest memory back to the complete function.

Signed-off-by: Dylan Reid <dgreid@fb.com>
(cherry picked from commit 1b8c92dd5e3c0c58316826486ce5ee30eeb71407))
[backport: adapted to stable/v51.x; v51.x has no block/src/request.rs
 split, so the new aligned_operation module is added next to
 block/src/lib.rs and the in tree struct, alloc, free path is
 replaced in place.]
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>

2026-05-14 14:47:42 -07:00

..

src

block: AlignedOperation owns its bounce buffer via Drop

2026-05-14 14:47:42 -07:00

Cargo.toml

block: qcow: Validate incompatible feature bits

2026-01-23 18:58:56 +00:00