linux-kernel - Re: [PATCH][next] clk: ti: check for null return in strrchr to avoid null dereferencing

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Message-ID: <20170901014515.GW21656@codeaurora.org>
Date:   Thu, 31 Aug 2017 18:45:15 -0700
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Tero Kristo <t-kristo@...com>,
        Michael Turquette <mturquette@...libre.com>,
        linux-omap@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] clk: ti: check for null return in strrchr to avoid
 null dereferencing

On 07/27, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> strrchr can potentially return a null so the following strlen on the
> null pointer can cause a null dereference. Add a check to see if
> the string postfix is not null before calling strlen.
> 
> Detected by CoverityScan, CID#1452039 ("Dereference null return")
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---

Applied to clk-next

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