From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:60436 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731232AbeKLIYs (ORCPT ); Mon, 12 Nov 2018 03:24:48 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qiuxu Zhuo , Tony Luck , Borislav Petkov , Aristeu Rozanski , Mauro Carvalho Chehab , linux-edac Subject: [PATCH 4.9 093/141] EDAC, skx_edac: Fix logical channel intermediate decoding Date: Sun, 11 Nov 2018 14:25:52 -0800 Message-Id: <20181111221640.980038100@linuxfoundation.org> In-Reply-To: <20181111221627.853046496@linuxfoundation.org> References: <20181111221627.853046496@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qiuxu Zhuo commit 8f18973877204dc8ca4ce1004a5d28683b9a7086 upstream. The code "lchan = (lchan << 1) | ~lchan" for logical channel intermediate decoding is wrong. The wrong intermediate decoding result is {0xffffffff, 0xfffffffe}. Fix it by replacing '~' with '!'. The correct intermediate decoding result is {0x1, 0x2}. Signed-off-by: Qiuxu Zhuo Signed-off-by: Tony Luck Signed-off-by: Borislav Petkov CC: Aristeu Rozanski CC: Mauro Carvalho Chehab CC: linux-edac Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20181009172025.18594-1-tony.luck@intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/edac/skx_edac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/edac/skx_edac.c +++ b/drivers/edac/skx_edac.c @@ -606,7 +606,7 @@ sad_found: break; case 2: lchan = (addr >> shift) % 2; - lchan = (lchan << 1) | ~lchan; + lchan = (lchan << 1) | !lchan; break; case 3: lchan = ((addr >> shift) % 2) << 1;