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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 9E866C433DB for ; Tue, 26 Jan 2021 02:48:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 573CD22D58 for ; Tue, 26 Jan 2021 02:48:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729701AbhAYOlN (ORCPT ); Mon, 25 Jan 2021 09:41:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:56586 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729417AbhAYOhl (ORCPT ); Mon, 25 Jan 2021 09:37:41 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D793E2311D; Mon, 25 Jan 2021 14:34:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1611585249; bh=bxzG9qoPXd8t0Jl2EXPbV3luOXZ1glKR1qlcJC0Q3m0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=WvFPQel7mDGtqBBgJMhHxxdr9hNZ0kcUPwoRA9anYtbLU4VaKbd5ntUtvSBJC/sa6 XQudlVYUIwAoznG8x9nr46u13PX1F/JFMBHEdth6F2905Ahk7nJ/53e7b+24edB5ru wEkhCtUfZIb65a/C7shZtfVtQIs6xPz6AAdoz3hs= Date: Mon, 25 Jan 2021 15:33:50 +0100 From: Greg KH To: Will Deacon Cc: stable@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Linus Torvalds , Theodore Ts'o , Florian Weimer , Peter Zijlstra , Naresh Kamboju , Catalin Marinas Subject: Re: [STABLE BACKPORT v2 4.4.y, 4.9.y and 4.14.y] compiler.h: Raise minimum version of GCC to 5.1 for arm64 Message-ID: References: <20210125132425.28245-1-will@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210125132425.28245-1-will@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 25, 2021 at 01:24:25PM +0000, Will Deacon wrote: > commit dca5244d2f5b94f1809f0c02a549edf41ccd5493 upstream. > > GCC versions >= 4.9 and < 5.1 have been shown to emit memory references > beyond the stack pointer, resulting in memory corruption if an interrupt > is taken after the stack pointer has been adjusted but before the > reference has been executed. This leads to subtle, infrequent data > corruption such as the EXT4 problems reported by Russell King at the > link below. > > Life is too short for buggy compilers, so raise the minimum GCC version > required by arm64 to 5.1. > > Reported-by: Russell King > Suggested-by: Arnd Bergmann > Signed-off-by: Will Deacon > Tested-by: Nathan Chancellor > Reviewed-by: Nick Desaulniers > Reviewed-by: Nathan Chancellor > Acked-by: Linus Torvalds > Cc: # 4.4.y, 4.9.y and 4.14.y only > Cc: Theodore Ts'o > Cc: Florian Weimer > Cc: Peter Zijlstra > Cc: Nick Desaulniers > Cc: Nathan Chancellor > Cc: Naresh Kamboju > Link: https://lore.kernel.org/r/20210105154726.GD1551@shell.armlinux.org.uk > Link: https://lore.kernel.org/r/20210112224832.10980-1-will@kernel.org > Signed-off-by: Catalin Marinas > [will: backport to 4.4.y/4.9.y/4.14.y; add __clang__ check] > Link: https://lore.kernel.org/r/CA+G9fYuzE9WMSB7uGjV4gTzK510SHEdJb_UXQCzsQ5MqA=h9SA@mail.gmail.com > Signed-off-by: Will Deacon > --- > include/linux/compiler-gcc.h | 6 ++++++ > 1 file changed, 6 insertions(+) Thanks, now queued up, let's try this again :) greg k-h