Patch "UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ubi-fastmap-scrub-peb-when-bitflips-are-detected-in-a-free-peb-ec-header.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Boris Brezillon <[email protected]>
Date: Fri, 16 Sep 2016 16:59:12 +0200
Subject: UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header

From: Boris Brezillon <[email protected]>

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.

---
 drivers/mtd/ubi/fastmap.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

@@ -513,10 +513,11 @@ 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);

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/ubi-fastmap-scrub-peb-when-bitflips-are-detected-in-a-free-peb-ec-header.patch queue-4.4/ubi-fastmap-fix-add_vol-return-value-test-in-ubi_attach_fastmap.patch