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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 8F8BCC43441 for ; Mon, 12 Nov 2018 12:10:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 54E2822419 for ; Mon, 12 Nov 2018 12:10:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 54E2822419 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729331AbeKLWDE (ORCPT ); Mon, 12 Nov 2018 17:03:04 -0500 Received: from cheddar.halon.org.uk ([93.93.131.118]:52274 "EHLO cheddar.halon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728302AbeKLWDE (ORCPT ); Mon, 12 Nov 2018 17:03:04 -0500 X-Greylist: delayed 1255 seconds by postgrey-1.27 at vger.kernel.org; Mon, 12 Nov 2018 17:03:03 EST Received: from bsmtp by cheddar.halon.org.uk with local-bsmtp (Exim 4.89) (envelope-from <93sam@debian.org>) id 1gMAiN-0002yv-8N; Mon, 12 Nov 2018 11:49:11 +0000 Received: from steve by tack.einval.org with local (Exim 4.89) (envelope-from <93sam@debian.org>) id 1gMAiH-00019k-4j; Mon, 12 Nov 2018 11:49:05 +0000 Date: Mon, 12 Nov 2018 11:49:05 +0000 From: Steve McIntyre <93sam@debian.org> To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Arnd Bergmann , Dominik Brodowski , "Eric W. Biederman" , Andrew Morton , Al Viro , Oleg Nesterov , Will Deacon , Catalin Marinas , Sasha Levin Subject: Re: [PATCH 4.19 087/361] signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack Message-ID: <20181112114857.2aidwlw2podpzytb@tack.einval.com> References: <20181111221619.915519183@linuxfoundation.org> <20181111221632.025807083@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181111221632.025807083@linuxfoundation.org> X-attached: none User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 11, 2018 at 02:17:14PM -0800, Greg Kroah-Hartman wrote: >4.19-stable review patch. If anyone has any objections, please let me know. > >------------------ > >From: Will Deacon > >[ Upstream commit 22839869f21ab3850fbbac9b425ccc4c0023926f ] > >The sigaltstack(2) system call fails with -ENOMEM if the new alternative >signal stack is found to be smaller than SIGMINSTKSZ. On architectures >such as arm64, where the native value for SIGMINSTKSZ is larger than >the compat value, this can result in an unexpected error being reported >to a compat task. See, for example: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=904385 ... Thanks Greg! If it's not too much effort, could you also take this for 4.9-stable as well please? That would get it into our next Debian stable update too. :-) Thanks, Steve -- Steve McIntyre, Cambridge, UK. steve@einval.com "I suspect most samba developers are already technically insane... Of course, since many of them are Australians, you can't tell." -- Linus Torvalds