linux-kernel - Re: [PATCH][-next] nfp: don't dereference a null nn->eth

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Date:   Sat, 08 Apr 2017 08:14:59 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     colin.king@...onical.com
Cc:     jakub.kicinski@...ronome.com, simon.horman@...ronome.com,
        oss-drivers@...ronome.com, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][-next] nfp: don't dereference a null nn->eth_port to
 print a warning

From: Colin King <colin.king@...onical.com>
Date: Thu,  6 Apr 2017 13:54:35 +0100

> From: Colin Ian King <colin.king@...onical.com>
> 
> On the case where nn->eth_port is null the warning message
> is printing the port by dereferencing this null pointer.
> Remove the deference to avoid a crash when printing the
> warning message.
> 
> Detected by CoverityScan, CID#1426198 ("Dereference after null check")
> 
> Fixes: ce22f5a2cbe3c627 ("nfp: separate high level and low level NSP headers")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Applied, thanks.