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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39F3BC433EF for ; Sun, 7 Nov 2021 15:03:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15DF361029 for ; Sun, 7 Nov 2021 15:03:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235562AbhKGPFu (ORCPT ); Sun, 7 Nov 2021 10:05:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229520AbhKGPFt (ORCPT ); Sun, 7 Nov 2021 10:05:49 -0500 Received: from mail-qv1-xf34.google.com (mail-qv1-xf34.google.com [IPv6:2607:f8b0:4864:20::f34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC775C061570 for ; Sun, 7 Nov 2021 07:03:06 -0800 (PST) Received: by mail-qv1-xf34.google.com with SMTP id i13so10423388qvm.1 for ; Sun, 07 Nov 2021 07:03:06 -0800 (PST) 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=3dZaLu1jOb5L+/xiFfhpx0W3PDKJc2vbOhEH6/IHwEQ=; b=DbEOLd2AbOUtpMSe3L+qBgWZXqu4VLKk7jVrqMvqMuWsXOoU5M7RgRsFhcIUM3APcj Pj2ZdA1ugDd+5iQ70kiWnrZm01q+xSG8k5lcaGtmkTijIxBK/NCNFOZZLF5+BlDfVQBx q88Djrow2mv/hxuAS52EVF8Wkx1PxJ9hL8vR/+mNTSTYjjB4uIAV0J6KtfQl4T/oUWVu Y+E2IKO2EJyLobPlrvZ2cnVcv86GYJlGrlAOQpiykr+dUzOv1BDjZbJbARq4DLw+AXgR QwmVbPoK+ESrDwiNNW297EzNfjG2SR+Ap2hK5z4XXPa8BMiT+g/05/6GYKIBz5xPJ48K +Fmg== 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=3dZaLu1jOb5L+/xiFfhpx0W3PDKJc2vbOhEH6/IHwEQ=; b=zSyqS40j391iez4IwzhaRa9KyGQ3etrb4qx8xXc6L6lOHjGooIwrgSwOgxE4dwOK1V d0/SuAbvwCnN+4SEIZSyS2qQFSxK4qQFPKDLfImHucAR3gM5nT/JqKy8TzV8kREfJw+0 mhNwnjMtW26aVY0QSzFzi5yedZB7obqrER8GpqBvQ+5hzX9/oPd2Mr80GRnbWviWZKOD sTtl3NpHIBTZyU+aI2fI1bMvL3Vkfe3qg3pv02Bb53VfRvZtEdD+FYlXKlb7mQvOGoH9 j+y9H6gnWr2vWh9DTooWSuwzp2SquqM5O6ebpZogDV9oja1Mxc0H5sLuCjs8QBSZ0fcq 8RWw== X-Gm-Message-State: AOAM531QA1EOy7fAHrub3i4HsPVIO7qiq4bT7p9pCI/GS99plO6B0aP4 u4+bPn3sIiVc8DatCct18Pc= X-Google-Smtp-Source: ABdhPJxXqU2vyUfYsyB6Z/mUYYuepK01dRPr3AKXljyIsOFjbNWUqw+nhkRvdcaGwOPGD5yvV7BXuw== X-Received: by 2002:a05:6214:1453:: with SMTP id b19mr12218204qvy.20.1636297385976; Sun, 07 Nov 2021 07:03:05 -0800 (PST) Received: from thinkpad.localdomain ([2804:14d:5c21:92d0:fc01:11b0:47fa:d730]) by smtp.gmail.com with ESMTPSA id x11sm9554883qta.90.2021.11.07.07.03.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Nov 2021 07:03:05 -0800 (PST) From: Luiz Sampaio To: ojeda@kernel.org Cc: linux-kernel@vger.kernel.org, Luiz Sampaio Subject: [PATCH 0/2] Fixing bug that would segmentation fault Date: Sun, 7 Nov 2021 12:03:02 -0300 Message-Id: <20211107150304.3253-1-sampaio.ime@gmail.com> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series of patches consists of one patch fixing a simple coding style issue and one patch fixing a bug that would cause segmentation fault. Basically, there was a pointer that was being dereferenced without testing if the pointer exists. This patch adds a protection, returning EFAULT in case the pointer is NULL. Luiz Sampaio (2): auxdisplay: charlcd: fixing coding style issue auxdisplay: charlcd: checking for pointer reference before dereferencing drivers/auxdisplay/charlcd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- 2.33.1