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=-14.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 64037C433B4 for ; Sat, 15 May 2021 07:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 32321613F0 for ; Sat, 15 May 2021 07:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233195AbhEOHgQ (ORCPT ); Sat, 15 May 2021 03:36:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230508AbhEOHgN (ORCPT ); Sat, 15 May 2021 03:36:13 -0400 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E7CCC06174A for ; Sat, 15 May 2021 00:35:00 -0700 (PDT) Received: by mail-ed1-x52d.google.com with SMTP id i13so1028893edb.9 for ; Sat, 15 May 2021 00:35:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=geXezWqksF0Uu4Gfw0bG+etU54O5YchybuMDVSDksHI=; b=kwQ/SVjmnqRJ3+EoQRvgUyjg+vjn/YSB99zKLdNaqZ/qD4hIPvedd89Q2WPsz3fevh dHPRgffNKbT7tNRAsUSE0vleInzZX8SfuKzTtBhmbO0gi0JNup6m8jMD4CYdLf0OnJKj bsL2lD/WZVcITtOzM2Trgr9OQqm0/i/b/yrJF6chBInidCzh5JJUXZpy9jytPTcA+Afu z2k7WOa3TEZrkrIb+cWnNdSLyg61pXNjkMeJ1nGU7/4MfQtps+wemlTzUHwWBVSrI3Nw tscYvrteV9VGm5oiIrC0aLhjxjZRlPwhSfRsUDlNuJWe2fN62yxwR+MrguiqjZAkerzj AEcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :mime-version:content-disposition; bh=geXezWqksF0Uu4Gfw0bG+etU54O5YchybuMDVSDksHI=; b=Wa/dfcGGbs8gPhukaT86/7PbDZ7q60g6oOk/2ce6QKNBfVRfcuiIzD6xMBS1wkpFis K5CXOXOQGW/WrszSCZlLwFaWHz0FaskKOw9OgtrA8+A4BgYzNrhDx7udPCpcoXeJbcMk JVOxsFTMGfhQOGlK2rx58olDPl+q28m/yt0zPeoBEjBBinzellKQTmaDl79k4qAMsIQk LZyhpHDEYuykFWT6U7nAHUQ0XRt5Pa1G4zOAisTRaqnWo6/77Joz/2aoswEKlnMgbiMS rNbOb6AOwUzsbVW2mSNP6dA8ZFuRK2S8IFv1Y5nXcLvn2EvABwcVrS3gHRsycZn9n8+6 vtYg== X-Gm-Message-State: AOAM530nxvgBeqZVoRHbXyP6rdPCVAFoaE4ZBIVSZrqddkeaQchdurV3 nGqnwwgPwLU9dZX9o99w+/A= X-Google-Smtp-Source: ABdhPJyUNoTSLHgY2ceugNpIEu4LrHVuiP3FweB1+1DVow+SjZ46+GstglM7/5Cvn9XEksrksH1iLg== X-Received: by 2002:a05:6402:944:: with SMTP id h4mr10219520edz.319.1621064098998; Sat, 15 May 2021 00:34:58 -0700 (PDT) Received: from gmail.com (178-164-188-54.pool.digikabel.hu. [178.164.188.54]) by smtp.gmail.com with ESMTPSA id i8sm6239983edu.64.2021.05.15.00.34.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 15 May 2021 00:34:55 -0700 (PDT) Sender: Ingo Molnar Date: Sat, 15 May 2021 09:34:53 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Peter Zijlstra , Borislav Petkov , Andrew Morton Subject: [GIT PULL] Stack randomization fix Message-ID: <20210515073453.GA78379@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest core/urgent git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-urgent-2021-05-15 # HEAD: 2515dd6ce8e545b0b2eece84920048ef9ed846c4 stack: Replace "o" output with "r" input constraint Fix an assembly constraint that affected LLVM up to version 12. Thanks, Ingo ------------------> Nick Desaulniers (1): stack: Replace "o" output with "r" input constraint include/linux/randomize_kstack.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/randomize_kstack.h b/include/linux/randomize_kstack.h index fd80fab663a9..bebc911161b6 100644 --- a/include/linux/randomize_kstack.h +++ b/include/linux/randomize_kstack.h @@ -38,7 +38,7 @@ void *__builtin_alloca(size_t size); u32 offset = raw_cpu_read(kstack_offset); \ u8 *ptr = __builtin_alloca(KSTACK_OFFSET_MAX(offset)); \ /* Keep allocation even after "ptr" loses scope. */ \ - asm volatile("" : "=o"(*ptr) :: "memory"); \ + asm volatile("" :: "r"(ptr) : "memory"); \ } \ } while (0)