Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751867AbaJJQgZ (ORCPT ); Fri, 10 Oct 2014 12:36:25 -0400 Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:60077 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751356AbaJJQgX (ORCPT ); Fri, 10 Oct 2014 12:36:23 -0400 Date: Fri, 10 Oct 2014 17:36:13 +0100 From: Russell King - ARM Linux To: Peter Hurley Cc: Aaro Koskinen , Johannes Weiner , linux-kernel@vger.kernel.org, Felipe Balbi , Rabin Vincent Subject: Re: [PATCH] arm: Blacklist gcc 4.8.[012] and 4.9.0 with CONFIG_FRAME_POINTER Message-ID: <20141010163613.GO5182@n2100.arm.linux.org.uk> References: <1412958374-16090-1-git-send-email-peter@hurleysoftware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1412958374-16090-1-git-send-email-peter@hurleysoftware.com> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 10, 2014 at 12:26:14PM -0400, Peter Hurley wrote: > gcc versions 4.8.[012] and 4.9.0 generates code that prematurely > adjusts the stack pointer such that still-to-be-referenced locals > are below the stack pointer, which allows them to be overwritten > by interrupts. I would much rather do this in asm-offsets.c, along side the other ARM specific buggy compiler test(s). I'm presently putting together such a patch. The information in the thread on linux-omap says only GCC 4.8.1 and GCC 4.8.2. Where do you get the other versions from? -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/