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From:   Wonhyuk Yang <vvghjk1234@gmail.com>
Date:   Mon, 17 May 2021 20:06:56 +0900
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Subject: Re: [PATCH] percpu: initialize best_upa variable
To:     Dennis Zhou <dennis@kernel.org>
Cc:     trix@redhat.com, Tejun Heo <tj@kernel.org>,
        Christoph Lameter <cl@linux.com>,
        Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
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On Mon, May 17, 2021 at 11:05 AM Dennis Zhou <dennis@kernel.org> wrote:
>
> Can you also tell me what static analysis tool produced this? I'm just a
> little curious because this code hasn't changed in several years so I'd
> have expected some static analyzer to have caught this by now.
>

It's because uninitialize_var() was gone. It was introduced commit :
3f649ab728cda8("treewide: Remove uninitialized_var() usage")