Re: [Qemu-devel] [PATCH] vdi: Fix memory leak

[Stefan Weil <sw@weilnetz.de>]

Am 22.11.2011 17:16, schrieb Kevin Wolf:
> The block map is allocated in vdi_open, but was never freed.
>
> Signed-off-by: Kevin Wolf<kwolf@redhat.com>
> ---
> Applies on top if the migration blocker series.
>
>   block/vdi.c |    3 +++
>   1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/block/vdi.c b/block/vdi.c
> index 7dda522..02da6b4 100644
> --- a/block/vdi.c
> +++ b/block/vdi.c
> @@ -949,6 +949,9 @@ static int vdi_create(const char *filename, QEMUOptionParameter *options)
>   static void vdi_close(BlockDriverState *bs)
>   {
>       BDRVVdiState *s = bs->opaque;
> +
> +    g_free(s->bmap);
> +
>       migrate_del_blocker(s->migration_blocker);
>       error_free(s->migration_blocker);
>   }

If vdi_close is called after a jump to label fail_free_bmap,
g_free(s->bmap) will be called twice.

Setting s->bmap = NULL after g_free in fail_free_bmap
would be safer.

Otherwise your patch is fine. If you send an update, you
can add

Reviewed-by: Stefan Weil <sw@weilnetz.de>

Regards,
Stefan Weil