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Re: [Qemu-devel] [PATCH-trivial] arch_init.c: Free 'cache' in cache_fini
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH-trivial] arch_init.c: Free 'cache' in cache_fini() to avoid memory leak |
Date: |
Wed, 4 Jun 2014 10:35:36 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
* Chen Gang (address@hidden) wrote:
> Call g_free() after cache_fini() in migration_end(), but do not call
> g_free() after call cache_fini() in xbzrle_cache_resize() which will
> cause memory leak.
>
> cache_init() and cache_fini() are pair, so need let cache_fini() call
> g_free(cache) to match cache_init(), then fix current issue too.
>
>
> Signed-off-by: Chen Gang <address@hidden>
Yes, good catch.
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> ---
> arch_init.c | 1 -
> page_cache.c | 1 +
> 2 files changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch_init.c b/arch_init.c
> index 9f1a174..23044c1 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -739,7 +739,6 @@ static void migration_end(void)
> XBZRLE_cache_lock();
> if (XBZRLE.cache) {
> cache_fini(XBZRLE.cache);
> - g_free(XBZRLE.cache);
> g_free(XBZRLE.encoded_buf);
> g_free(XBZRLE.current_buf);
> XBZRLE.cache = NULL;
> diff --git a/page_cache.c b/page_cache.c
> index b033681..89bb1ec 100644
> --- a/page_cache.c
> +++ b/page_cache.c
> @@ -109,6 +109,7 @@ void cache_fini(PageCache *cache)
>
> g_free(cache->page_cache);
> cache->page_cache = NULL;
> + g_free(cache);
> }
>
> static size_t cache_get_cache_pos(const PageCache *cache,
> --
> 1.7.11.7
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK