From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753219AbdBPAGB (ORCPT ); Wed, 15 Feb 2017 19:06:01 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:53697 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754719AbdBOXQv (ORCPT ); Wed, 15 Feb 2017 18:16:51 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Boris Brezillon" , "Richard Weinberger" Date: Wed, 15 Feb 2017 22:41:40 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 088/306] UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.40-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Boris Brezillon commit ecbfa8eabae9cd73522d1d3d15869703c263d859 upstream. scan_pool() does not mark the PEB for scrubing when bitflips are detected in the EC header of a free PEB (VID header region left to 0xff). Make sure we scrub the PEB in this case. Signed-off-by: Boris Brezillon Fixes: dbb7d2a88d2a ("UBI: Add fastmap core") Signed-off-by: Richard Weinberger Signed-off-by: Ben Hutchings --- drivers/mtd/ubi/fastmap.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -445,10 +445,11 @@ static int scan_pool(struct ubi_device * unsigned long long ec = be64_to_cpu(ech->ec); unmap_peb(ai, pnum); dbg_bld("Adding PEB to free: %i", pnum); + if (err == UBI_IO_FF_BITFLIPS) - add_aeb(ai, free, pnum, ec, 1); - else - add_aeb(ai, free, pnum, ec, 0); + scrub = 1; + + add_aeb(ai, free, pnum, ec, scrub); continue; } else if (err == 0 || err == UBI_IO_BITFLIPS) { dbg_bld("Found non empty PEB:%i in pool", pnum);