From patchwork Tue May 24 17:27:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gautam Menghani X-Patchwork-Id: 12860394 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 98AF0C433EF for ; Tue, 24 May 2022 17:28:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 03E9B8D0003; Tue, 24 May 2022 13:28:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F2CEA8D0002; Tue, 24 May 2022 13:28:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E1E018D0003; Tue, 24 May 2022 13:28:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id D4D818D0002 for ; Tue, 24 May 2022 13:28:02 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id A68773425A for ; Tue, 24 May 2022 17:28:02 +0000 (UTC) X-FDA: 79501319604.08.54F4AA5 Received: from mail-pj1-f44.google.com (mail-pj1-f44.google.com [209.85.216.44]) by imf27.hostedemail.com (Postfix) with ESMTP id F363540034 for ; Tue, 24 May 2022 17:27:58 +0000 (UTC) Received: by mail-pj1-f44.google.com with SMTP id z11so7612699pjc.3 for ; Tue, 24 May 2022 10:28:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TQSXOGBPTe2uw0qPjIIRPCO+MsJXruCMk2fBLAYYqXA=; b=SMLKrRvgc/KrH7nqdtcAGv/w6WVgHYGDMTNxXymT+PIT3qI9xE5xRuDvStKpTZbMXt zLx0qqGhh9+Xe0u49z7OgT/yzgZzmY/7hM3YveAoRyOyiPXVxyENFk012ZMHkgdO6iF4 dclSnc56WA7bYzd6iCQrGr4sVbgqKdh2Mjf130eX4fsZuNq7X7RiwjlXJUoDIM2uQZAr 8Hl7xzfeCJ/KE/pX2xXckAHsN01i2+4TTP7o28H+XBzQXC+/1xhSzJ/lmvBQwfgFiPH0 +jtlFOfItgDT0bITZgkfDDJXiapu+Z1f6PLIbGnS0TDbauiK37mByB0WywIgAaSA1amA Sgig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=TQSXOGBPTe2uw0qPjIIRPCO+MsJXruCMk2fBLAYYqXA=; b=UYoQFII20sYm/8FhzHHgN98FoApW4sBKRkpfROW3IqQsjCgqv35GeL9coh3YbiYK+1 CwgAj+WCGPmjUlDqHQ+R2kFdOEEf9dvYGewEaypzzqhXFJMFgXTAiKleLLaie6S3zmPL +Mm6Os6LlsDJ5zUZokgJjg/THGauBQTaudTAKyy3fMiOQS02ohjWpg9jQ24Kv6hM7KHk w8+J2p+f4GyvcHVTFtg4cAhrlF+UimfxfjrEB1WSKJXORJrShmfXFyub3bNIPQZpn0LG NO9omH5IPmRx2pkpeR7rL+lLcVsaZz83JJCSOs6eGiTTcPybcDn39AcTW0QL7ydinpnC Tm9w== X-Gm-Message-State: AOAM533W9d4Q8afJtIt73xRgl/17MmmvflTOUptYksRq9ZS9CuXbcOdS hW3MmPPC9Luv6vih7LLN3VQ= X-Google-Smtp-Source: ABdhPJxtyLUP5CjnATo5cBrld/MCmrqLC9oAQT9qim9Xt8yHRxK3xMyYy+Qp/XMm3N4d1auSj+NHOg== X-Received: by 2002:a17:90b:1e4f:b0:1e0:b91:39ef with SMTP id pi15-20020a17090b1e4f00b001e00b9139efmr5532443pjb.51.1653413281244; Tue, 24 May 2022 10:28:01 -0700 (PDT) Received: from ubuntu.localdomain ([103.230.148.185]) by smtp.gmail.com with ESMTPSA id m17-20020a170902db1100b0016144a84c31sm7573894plx.119.2022.05.24.10.27.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 May 2022 10:28:00 -0700 (PDT) From: Gautam Menghani To: akpm@linux-foundation.org Cc: Gautam Menghani , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, skhan@linuxfoundation.org Subject: [PATCH] include/linux/mm: Initialize an int variable to prevent returning garbage value Date: Tue, 24 May 2022 10:27:55 -0700 Message-Id: <20220524172755.11892-1-gautammenghani201@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Rspamd-Queue-Id: F363540034 X-Stat-Signature: qpg3hczq3xkujj4uxjkxwxzad38jwce8 Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=SMLKrRvg; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf27.hostedemail.com: domain of gautammenghani201@gmail.com designates 209.85.216.44 as permitted sender) smtp.mailfrom=gautammenghani201@gmail.com X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1653413278-801118 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Initialize the variable 'ret' to prevent garbage value from being returned. This Fixes the clang scan warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn] return ret; Signed-off-by: Gautam Menghani --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 9f44254af8ce..f437bd81d6a4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1700,7 +1700,7 @@ static inline int arch_make_page_accessible(struct page *page) #ifndef HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE static inline int arch_make_folio_accessible(struct folio *folio) { - int ret; + int ret = 0; long i, nr = folio_nr_pages(folio); for (i = 0; i < nr; i++) {