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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 CB472C2D0EC for ; Fri, 10 Apr 2020 03:54:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3F4820936 for ; Fri, 10 Apr 2020 03:54:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586490890; bh=vDbC//cFoiarsCOyRPOI0FBifzs1I3USmWge+kKgjaU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=t2Jvcw4mu8AfM67Q9TwOIX/24CF50H/yxtB2iX6qxsKtt5klSvQ0EgdqaVV98M3XZ OMS9tIN4K3pfjXjbdsa+od7JCzu2QkxNLur5Xm6AONpemJ7GeDzbJRVdxcBistjgxg IQS2Aesy8WDUlyotZB0yFMkC+EsFr2gnaLF+NDd0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729102AbgDJDyl (ORCPT ); Thu, 9 Apr 2020 23:54:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:34836 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726740AbgDJDuU (ORCPT ); Thu, 9 Apr 2020 23:50:20 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 74B2F2173E; Fri, 10 Apr 2020 03:50:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586490620; bh=vDbC//cFoiarsCOyRPOI0FBifzs1I3USmWge+kKgjaU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0IzQ1Mu0KZYVTC3DiUWuvwYlryAx4dCstdy54EY8DKxrqw9Hp6v/klthpJzngeY0m vh/uThUzRCnSMijHuQIMASg1v5CyOw/BfRXDa2Ytjg+j5XscIYriFCMd2NU/rvM2B7 E+jX6aoqB84TjBOUIlIenbE8As24XiY/WGUGE7sc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Andy Lutomirski , kbuild test robot , Borislav Petkov , Sasha Levin , linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 12/32] selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault Date: Thu, 9 Apr 2020 23:49:45 -0400 Message-Id: <20200410035005.9371-12-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200410035005.9371-1-sashal@kernel.org> References: <20200410035005.9371-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Andy Lutomirski [ Upstream commit 630b99ab60aa972052a4202a1ff96c7e45eb0054 ] If AT_SYSINFO is not present, don't try to call a NULL pointer. Reported-by: kbuild test robot Signed-off-by: Andy Lutomirski Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/faaf688265a7e1a5b944d6f8bc0f6368158306d3.1584052409.git.luto@kernel.org Signed-off-by: Sasha Levin --- tools/testing/selftests/x86/ptrace_syscall.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/x86/ptrace_syscall.c b/tools/testing/selftests/x86/ptrace_syscall.c index 6f22238f32173..12aaa063196e7 100644 --- a/tools/testing/selftests/x86/ptrace_syscall.c +++ b/tools/testing/selftests/x86/ptrace_syscall.c @@ -414,8 +414,12 @@ int main() #if defined(__i386__) && (!defined(__GLIBC__) || __GLIBC__ > 2 || __GLIBC_MINOR__ >= 16) vsyscall32 = (void *)getauxval(AT_SYSINFO); - printf("[RUN]\tCheck AT_SYSINFO return regs\n"); - test_sys32_regs(do_full_vsyscall32); + if (vsyscall32) { + printf("[RUN]\tCheck AT_SYSINFO return regs\n"); + test_sys32_regs(do_full_vsyscall32); + } else { + printf("[SKIP]\tAT_SYSINFO is not available\n"); + } #endif test_ptrace_syscall_restart(); -- 2.20.1