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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D592C433EF for ; Thu, 30 Jun 2022 13:51:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235692AbiF3NvL (ORCPT ); Thu, 30 Jun 2022 09:51:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235538AbiF3Nue (ORCPT ); Thu, 30 Jun 2022 09:50:34 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F4BB3CA4B; Thu, 30 Jun 2022 06:49:02 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2B99B62005; Thu, 30 Jun 2022 13:49:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3777DC34115; Thu, 30 Jun 2022 13:48:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1656596939; bh=oCbBNzQ7H7CJAOIyXRH136dBBNXqajI5X04Of4eAtTE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2TE/XKYwuCFyt/+qOSNARfUcY/tnDAOujH5I2CGfMAkq1ZkLe1Hq+8cQuPpXu7Xst CHtJ0Wg+cbf3DvBq06SbCGl3MmqpR9EqnfLVBYcQQzhCyORruKcGmzKNQzAgLI44HB QUM0+Zlb6ixSqy6/0HedIewucSKIIcAjFwuLASno= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Julien Grall , Juergen Gross , Sasha Levin Subject: [PATCH 4.9 08/29] x86/xen: Remove undefined behavior in setup_features() Date: Thu, 30 Jun 2022 15:46:08 +0200 Message-Id: <20220630133231.448872256@linuxfoundation.org> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220630133231.200642128@linuxfoundation.org> References: <20220630133231.200642128@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Julien Grall [ Upstream commit ecb6237fa397b7b810d798ad19322eca466dbab1 ] 1 << 31 is undefined. So switch to 1U << 31. Fixes: 5ead97c84fa7 ("xen: Core Xen implementation") Signed-off-by: Julien Grall Reviewed-by: Juergen Gross Link: https://lore.kernel.org/r/20220617103037.57828-1-julien@xen.org Signed-off-by: Juergen Gross Signed-off-by: Sasha Levin --- drivers/xen/features.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/features.c b/drivers/xen/features.c index d7d34fdfc993..f466f776604f 100644 --- a/drivers/xen/features.c +++ b/drivers/xen/features.c @@ -28,6 +28,6 @@ void xen_setup_features(void) if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) break; for (j = 0; j < 32; j++) - xen_features[i * 32 + j] = !!(fi.submap & 1<