From nobody Fri Jun 19 14:44:34 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85861C433EF for ; Sat, 2 Apr 2022 08:34:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239286AbiDBIgj (ORCPT ); Sat, 2 Apr 2022 04:36:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230062AbiDBIgh (ORCPT ); Sat, 2 Apr 2022 04:36:37 -0400 Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 072B8158558; Sat, 2 Apr 2022 01:34:46 -0700 (PDT) Received: by mail-qt1-x82c.google.com with SMTP id bp39so3984003qtb.6; Sat, 02 Apr 2022 01:34:45 -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=Tfha1nXEQp5tnH0OT7lYvNtXkp0/rCs/1BLKkrtZnbc=; b=Okfx0/e4xNIm4mKw8WX9qJApxey2071CaaKEMbniVf5ghLGtCCW+JTr3NaZVhnghOe 96iwVtE/kpNO0QyNa62PqceYRwvr4amAsOqmAFMzO92vcC5PI4eTjGV9xi+ILjZxwU6K iQETuQmcDrGV1EQNq+uBZNHHAMqCXTkSLieoJpqzZtq6Eu5ecUzppmdiHl6W/u184Mxp Cgx4Tq83A39LIC9xcfl3uFRthf4hCIxRXnMt/ZWh9R4unIYPzRh2pVkzfbX0jpgkXS49 RSUV+808bVOA8RJOlrE9cIDF4WG2eyrMuZURXdoIfuYIS1C8RwL+vsUzn/DkmWG5FtqU x66g== 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=Tfha1nXEQp5tnH0OT7lYvNtXkp0/rCs/1BLKkrtZnbc=; b=fMMbu/P1xwjBlkBWs74uqVXAO0lbHh6hesk3Nkx5yIVHN6MoQdII91aWv7uw+RJ4bY dRZ5PCGChMGoJQHVPbglPbgATWivArjX0dlwwZdRxXksoAk+2+HivVM5F7hs657jR4U0 WLwoGZzii9PRza3e1NATL51FvP3ryYXvNcf1YUNs0vv+creRvv20oT5Zxyler7mnBTEk BsIEIGYwAGypxHLM0uVGpdfguHoeYufvunVsBzSNJKIiizn4E7aZ9glRLsJoD583OokJ WhNNDJC5JsDShDNtk9Uk0yoUs264QP6OzcQZti61UmPBwfZ3HEgPkZ8o0M5cvrwcoiuQ /6bA== X-Gm-Message-State: AOAM532sPyWb+h1vffWfJmSdBRZ8UwCk8y39voBEqgGDJf0l/ytvro9W m0vvuNCNybhu+uJHGeVKcho= X-Google-Smtp-Source: ABdhPJwfq+enwXW1WKkocNgin+7CGJQUN/e2R5dCD7uiQb4eIWzcOf+5brTtSbj2SynoMohIY6RE3Q== X-Received: by 2002:a05:622a:1315:b0:2e2:2952:11b8 with SMTP id v21-20020a05622a131500b002e2295211b8mr11269954qtk.244.1648888485207; Sat, 02 Apr 2022 01:34:45 -0700 (PDT) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id de8-20020a05620a370800b0067ec34c9f27sm2569212qkb.129.2022.04.02.01.34.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Apr 2022 01:34:44 -0700 (PDT) From: cgel.zte@gmail.com X-Google-Original-From: lv.ruyi@zte.com.cn To: rth@twiddle.net Cc: ink@jurassic.park.msu.ru, mattst88@gmail.com, lv.ruyi@zte.com.cn, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, Zeal Robot Subject: [PATCH] alpha: add null pointer check Date: Sat, 2 Apr 2022 08:34:36 +0000 Message-Id: <20220402083436.2413189-1-lv.ruyi@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Lv Ruyi kmalloc is a memory allocation function which can return NULL when some internal memory errors happen. Add null pointer check to avoid dereferencing null pointer. Reported-by: Zeal Robot Signed-off-by: Lv Ruyi --- arch/alpha/kernel/module.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c index 5b60c248de9e..5442b75a98c2 100644 --- a/arch/alpha/kernel/module.c +++ b/arch/alpha/kernel/module.c @@ -47,6 +47,8 @@ process_reloc_for_got(Elf64_Rela *rela, } =20 g =3D kmalloc (sizeof (*g), GFP_KERNEL); + if (!g) + return; g->next =3D chains[r_sym].next; g->r_addend =3D r_addend; g->got_offset =3D *poffset; --=20 2.25.1