From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755065Ab0AZT27 (ORCPT ); Tue, 26 Jan 2010 14:28:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755001Ab0AZT27 (ORCPT ); Tue, 26 Jan 2010 14:28:59 -0500 Received: from kroah.org ([198.145.64.141]:33566 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754976Ab0AZT26 (ORCPT ); Tue, 26 Jan 2010 14:28:58 -0500 X-Mailbox-Line: From gregkh@mini.kroah.org Tue Jan 26 11:16:24 2010 Message-Id: <20100126191623.898160039@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Tue, 26 Jan 2010 11:14:37 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Tamas Vincze , Mauro Carvalho Chehab , Doug Thompson Subject: [01/11] edac: i5000_edac critical fix panic out of bounds In-Reply-To: <20100126191730.GA20872@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Tamas Vincze commit 118f3e1afd5534c15f9701f33514186cfc841a27 upstream. EDAC MC0: INTERNAL ERROR: channel-b out of range (4 >= 4) Kernel panic - not syncing: EDAC MC0: Uncorrected Error (XEN) Domain 0 crashed: 'noreboot' set - not rebooting. This happens because FERR_NF_FBD bit 28 is not updated on i5000. Due to that, both bits 28 and 29 may be equal to one, returning channel = 3. As this value is invalid, EDAC core generates the panic. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=14568 Signed-off-by: Tamas Vincze Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Doug Thompson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- drivers/edac/i5000_edac.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/edac/i5000_edac.c +++ b/drivers/edac/i5000_edac.c @@ -566,7 +566,13 @@ static void i5000_process_nonfatal_error debugf0("\tUncorrected bits= 0x%x\n", ue_errors); branch = EXTRACT_FBDCHAN_INDX(info->ferr_nf_fbd); - channel = branch; + + /* + * According with i5000 datasheet, bit 28 has no significance + * for errors M4Err-M12Err and M17Err-M21Err, on FERR_NF_FBD + */ + channel = branch & 2; + bank = NREC_BANK(info->nrecmema); rank = NREC_RANK(info->nrecmema); rdwr = NREC_RDWR(info->nrecmema);