From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A50A9C433ED for ; Mon, 17 May 2021 11:07:09 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 38C6E6044F for ; Mon, 17 May 2021 11:07:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38C6E6044F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7FADA6B0036; Mon, 17 May 2021 07:07:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7AAE36B006E; Mon, 17 May 2021 07:07:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 625996B0070; Mon, 17 May 2021 07:07:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0198.hostedemail.com [216.40.44.198]) by kanga.kvack.org (Postfix) with ESMTP id 2D2E76B0036 for ; Mon, 17 May 2021 07:07:08 -0400 (EDT) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id AEE9912D1 for ; Mon, 17 May 2021 11:07:07 +0000 (UTC) X-FDA: 78150446094.05.AFE6797 Received: from mail-lj1-f182.google.com (mail-lj1-f182.google.com [209.85.208.182]) by imf29.hostedemail.com (Postfix) with ESMTP id EFFDDFE for ; Mon, 17 May 2021 11:07:05 +0000 (UTC) Received: by mail-lj1-f182.google.com with SMTP id p12so6709539ljg.1 for ; Mon, 17 May 2021 04:07:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=T801vI3LxOUhucgqqtu/p+G3EjfDzfAqMYaB4S3ROjk=; b=kQyVf0rWbZwsBetvE0viHhCMcLvBuGe3ns/8Dj5GZQyyCNi70+HUzkaRrrcI0GAPou +cb2Qu/560qtgpMquXzzT9/lhkEVlAJqAGfJbqeco0eSvIhLNbD/tskLOhTcqemSlAgS 34Y06h5LT43ehRCd1Tjqyf0vlGAHbvCX4EnO320mYMt24oXGgRMmJ1exUDbTUcdZrQBZ 0QwRzWb1G2JPHkdnEBxwhqFuqGjr/bENRvFipGAmeW/Ah7mBZkSC05z1Ob0vEKw/87NP 0lE5BL/kPR+1Mc8NIpaJjjGvBn5hAbnHFYe/SwDQUeFqGrP3scwLfLCQAMZfQGkDZh06 zhQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=T801vI3LxOUhucgqqtu/p+G3EjfDzfAqMYaB4S3ROjk=; b=Z+Sj5FURuT8HxVvKQFjVILjB0kUHqYcJVZLfFfOS5DEEwsHamdbvDqdT8Jsq6LD2HL X9CW5pjKRnXiX+GEkoM230i2AxGEL0kZ5juP7EY0VwonFd58+J7B8JR6xxvijx7HKM+Y dbW2fFIAYl3S8owBKcofDyGeO7fUNDCwrYo9Q7QCUy4owDQGxlM5d4CQo/WljcrJLhmO Ue6FV2tvFom+VbZpj+sIl8vwxY774MHexXraPc6P59nhCP8bWW8B+Bf2yXEubIZbIlHt YPyQDd0TbNxYZeGvKVhJRZSRl+kCcvrWhEAzWmKGOodqOUjaf8E5f65jFupXL3wLZW5s oVfw== X-Gm-Message-State: AOAM5317oOdMyaQeamf0CmfKw6YiPzW1jndViZWOyre4kGVGrBgqXx1z gqRG9IGHxxkcBdJmssm+ArZi4k5mxvy9F29yZaE= X-Google-Smtp-Source: ABdhPJycDHrmY6TYNqNg+g+4uI2ZucTDhG9y1l6T26rCzALbjW6IatrSPREzJ87SunzaeilUYpvqfqDhcxCFPuXAlqw= X-Received: by 2002:a2e:9ece:: with SMTP id h14mr49549410ljk.199.1621249625844; Mon, 17 May 2021 04:07:05 -0700 (PDT) MIME-Version: 1.0 References: <20210515180817.1751084-1-trix@redhat.com> In-Reply-To: From: Wonhyuk Yang Date: Mon, 17 May 2021 20:06:56 +0900 Message-ID: Subject: Re: [PATCH] percpu: initialize best_upa variable To: Dennis Zhou Cc: trix@redhat.com, Tejun Heo , Christoph Lameter , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: EFFDDFE Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=kQyVf0rW; spf=pass (imf29.hostedemail.com: domain of vvghjk1234@gmail.com designates 209.85.208.182 as permitted sender) smtp.mailfrom=vvghjk1234@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam04 X-Stat-Signature: jcbsostru9xuymfij1tc4pitjdndmqwx X-HE-Tag: 1621249625-695006 X-Bogosity: Ham, tests=bogofilter, spamicity=0.002071, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, May 17, 2021 at 11:05 AM Dennis Zhou 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")