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=-6.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 48A91C43441 for ; Sun, 11 Nov 2018 22:59:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 052CA20818 for ; Sun, 11 Nov 2018 22:59:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="yGPhOnjl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 052CA20818 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 S2390598AbeKLItf (ORCPT ); Mon, 12 Nov 2018 03:49:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:51248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390779AbeKLIWh (ORCPT ); Mon, 12 Nov 2018 03:22:37 -0500 Received: from localhost (unknown [206.108.79.134]) (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 DAEBA21707; Sun, 11 Nov 2018 22:32:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975560; bh=fA9EofwxM0ydHbs8UthIZJNJAk5Ec/C/SsniGLG76IY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yGPhOnjlRGS3BYKo4dc1QT0NSg0930P7P6YNtnbub0N1tzXw1fVdPr4U2tZrf8c8e pAu9qAGSdCJM2oAxPrszmGVF/KSfIOmasQKvW4dP/dBGvGkvarrgemQgwiCepMGSSF eK9r02aj/HwZh6PRc1VWO/0ENM9ZQBQolQLRBPxM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Juergen Gross Subject: [PATCH 4.14 122/222] xen/pvh: increase early stack size Date: Sun, 11 Nov 2018 14:23:39 -0800 Message-Id: <20181111221658.629803333@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221647.665769131@linuxfoundation.org> References: <20181111221647.665769131@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Roger Pau Monne commit 7deecbda3026f5e2a8cc095d7ef7261a920efcf2 upstream. While booting on an AMD EPYC box the stack canary would detect stack overflows when using the current PVH early stack size (256). Switch to using the value defined by BOOT_STACK_SIZE, which prevents the stack overflow. Cc: # 4.11 Signed-off-by: Roger Pau Monné Reviewed-by: Juergen Gross Signed-off-by: Juergen Gross Signed-off-by: Greg Kroah-Hartman --- arch/x86/xen/xen-pvh.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/xen/xen-pvh.S +++ b/arch/x86/xen/xen-pvh.S @@ -178,7 +178,7 @@ canary: .fill 48, 1, 0 early_stack: - .fill 256, 1, 0 + .fill BOOT_STACK_SIZE, 1, 0 early_stack_end: ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY,