linux-kernel - Re: [PATCH] mac80211: fix incorrect error return path on tmp allocation failure

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Date:   Fri, 28 Oct 2016 20:16:33 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Colin King <colin.king@...onical.com>,
        "David S . Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mac80211: fix incorrect error return path on tmp
 allocation failure

On Fri, 2016-10-28 at 19:08 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The current exit path when tmp fails to be allocated is via the
> fail label which frees tfm2 which has not yet been allocated,
> which is problematic since tfm2 is not initialized and is a garbage
> pointer. Fix this by exiting directly to the return at the end
> of the function and hence avoiding the freeing of tfm2.

Yeah, thanks. Arnd beat you to the fix by about 8 hours, so I've
already applied his patch and sent an updated pull request :)

johannes