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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT 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 BAFB6C43610 for ; Mon, 19 Nov 2018 15:15:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 816C920831 for ; Mon, 19 Nov 2018 15:15:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Va0Iq0/D" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 816C920831 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.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 S1729783AbeKTBjr (ORCPT ); Mon, 19 Nov 2018 20:39:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:50834 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729376AbeKTBjr (ORCPT ); Mon, 19 Nov 2018 20:39:47 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 62B022086A; Mon, 19 Nov 2018 15:15:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1542640553; bh=Tnie24KK0nINs6QndiQ/Jot0JgeKarpIoT2cWBy9cKA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Va0Iq0/D4YKn74mQTQiK0yvnviWVZhLkzKjx7GRsE/fZMqpVMIzAdZs/mARMxbl7M wuKuu1m6sp7AEDyo7hsfjf6z8UUbWgm0xo+2RLDi8f6hbXwHAyn0Xq7D+/OyLvRpxB gIsR8exEG52o8QXQn6EWIOaQ5Sk8tz0DHAu+OteA= Date: Mon, 19 Nov 2018 16:15:51 +0100 From: Greg Kroah-Hartman To: Steve McIntyre <93sam@debian.org> 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: <20181119151551.GC5340@kroah.com> References: <20181111221619.915519183@linuxfoundation.org> <20181111221632.025807083@linuxfoundation.org> <20181112114857.2aidwlw2podpzytb@tack.einval.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181112114857.2aidwlw2podpzytb@tack.einval.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 12, 2018 at 11:49:05AM +0000, Steve McIntyre wrote: > 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. :-) Does not apply to 4.9.y, can you provide a working backport? thanks, greg k-h