linux-kernel - Re: [PATCH] perf: qcom_l2_pmu: fix an incorrect NULL check on list iterator

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Date:   Mon,  4 Apr 2022 11:10:49 +0100
From:   Will Deacon <will@...nel.org>
To:     Xiaomeng Tong <xiam0nd.tong@...il.com>, agross@...nel.org
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, nleeder@...eaurora.org,
        mark.rutland@....com, bjorn.andersson@...aro.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] perf: qcom_l2_pmu: fix an incorrect NULL check on list iterator

On Sun, 27 Mar 2022 13:57:33 +0800, Xiaomeng Tong wrote:
> The bug is here:
> 	return cluster;
> 
> The list iterator value 'cluster' will *always* be set and non-NULL
> by list_for_each_entry(), so it is incorrect to assume that the
> iterator value will be NULL if the list is empty or no element
> is found.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] perf: qcom_l2_pmu: fix an incorrect NULL check on list iterator
      https://git.kernel.org/arm64/c/2012a9e27901

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev