netdev - Re: [PATCH v4] net: don't call strlen() on the user buffer in packet_bind

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Message-ID: <1488383289.9415.286.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Wed, 01 Mar 2017 07:48:09 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Alexander Potapenko <glider@...gle.com>
Cc:     dvyukov@...gle.com, kcc@...gle.com, edumazet@...gle.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v4] net: don't call strlen() on the user buffer in
 packet_bind_spkt()

On Wed, 2017-03-01 at 12:57 +0100, Alexander Potapenko wrote:
> KMSAN (KernelMemorySanitizer, a new error detection tool) reports use of
> uninitialized memory in packet_bind_spkt():
...
> Signed-off-by: Alexander Potapenko <glider@...gle.com>
> ---
> Changes since v3:
>  - addressed comments by Eric Dumazet (avoid using constants,
>    use memcpy() instead of strncpy())
> ---

Acked-by: Eric Dumazet <edumazet@...gle.com>