This is a note to let you know that I've just added the patch titled
md/raid10: fix memory leak when reshaping a RAID10.
to the 3.16-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:
md-raid10-fix-memory-leak-when-reshaping-a-raid10.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ce0b0a46955d1bb389684a2605dbcaa990ba0154 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@xxxxxxx>
Date: Mon, 18 Aug 2014 13:56:38 +1000
Subject: md/raid10: fix memory leak when reshaping a RAID10.
From: NeilBrown <neilb@xxxxxxx>
commit ce0b0a46955d1bb389684a2605dbcaa990ba0154 upstream.
raid10 reshape clears unwanted bits from a bio->bi_flags using
a method which, while clumsy, worked until 3.10 when BIO_OWNS_VEC
was added.
Since then it clears that bit but shouldn't. This results in a
memory leak.
So change to used the approved method of clearing unwanted bits.
As this causes a memory leak which can consume all of memory
the fix is suitable for -stable.
Fixes: a38352e0ac02dbbd4fa464dc22d1352b5fbd06fd
Reported-by: mdraid.pkoch@xxxxxxxx (Peter Koch)
Signed-off-by: NeilBrown <neilb@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/raid10.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -4410,7 +4410,7 @@ read_more:
read_bio->bi_private = r10_bio;
read_bio->bi_end_io = end_sync_read;
read_bio->bi_rw = READ;
- read_bio->bi_flags &= ~(BIO_POOL_MASK - 1);
+ read_bio->bi_flags &= (~0UL << BIO_RESET_BITS);
read_bio->bi_flags |= 1 << BIO_UPTODATE;
read_bio->bi_vcnt = 0;
read_bio->bi_iter.bi_size = 0;
Patches currently in stable-queue which might be from neilb@xxxxxxx are
queue-3.16/md-raid10-fix-memory-leak-when-reshaping-a-raid10.patch
queue-3.16/md-raid6-avoid-data-corruption-during-recovery-of-double-degraded-raid6.patch
queue-3.16/md-raid1-raid10-always-abort-recover-on-write-error.patch
queue-3.16/md-raid10-fix-memory-leak-when-raid10-reshape-completes.patch
queue-3.16/md-raid5-avoid-livelock-caused-by-non-aligned-writes.patch
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