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Re: [Qemu-stable] [PATCH 05/18] nbd/client: fix drop_sync


From: Eric Blake
Subject: Re: [Qemu-stable] [PATCH 05/18] nbd/client: fix drop_sync
Date: Mon, 6 Feb 2017 17:17:34 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0

On 02/03/2017 09:47 AM, Vladimir Sementsov-Ogievskiy wrote:
> Comparison symbol is misused. It may lead to memory corruption.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
> ---
>  nbd/client.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Adding qemu-stable; this needs to be back-ported, and can be applied
independently from your series.

Reviewed-by: Eric Blake <address@hidden>

> 
> diff --git a/nbd/client.c b/nbd/client.c
> index 6caf6bda6d..351731bc63 100644
> --- a/nbd/client.c
> +++ b/nbd/client.c
> @@ -94,7 +94,7 @@ static ssize_t drop_sync(QIOChannel *ioc, size_t size)
>      char small[1024];
>      char *buffer;
>  
> -    buffer = sizeof(small) < size ? small : g_malloc(MIN(65536, size));
> +    buffer = sizeof(small) > size ? small : g_malloc(MIN(65536, size));
>      while (size > 0) {
>          ssize_t count = read_sync(ioc, buffer, MIN(65536, size));
>  
> 

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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