linux-kernel - Re: [PATCH][next] xsk: Fix null check on error return path

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Message-ID: <9b7e36c3-0532-245c-763a-8f4e7e36b358@iogearbox.net>
Date:   Wed, 2 Sep 2020 20:33:41 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Björn Töpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] xsk: Fix null check on error return path

On 9/2/20 5:07 PM, Gustavo A. R. Silva wrote:
> Currently, dma_map is being checked, when the right object identifier
> to be null-checked is dma_map->dma_pages, instead.
> 
> Fix this by null-checking dma_map->dma_pages.
> 
> Addresses-Coverity-ID: 1496811 ("Logically dead code")
> Fixes: 921b68692abb ("xsk: Enable sharing of dma mappings")
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Applied, thanks!