This is a note to let you know that I've just added the patch titled
bcache: Fix a null ptr deref regression
to the 3.11-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:
bcache-fix-a-null-ptr-deref-regression.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2fe80d3bbf1c8bd9efc5b8154207c8dd104e7306 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Date: Thu, 10 Oct 2013 17:31:15 -0700
Subject: bcache: Fix a null ptr deref regression
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
commit 2fe80d3bbf1c8bd9efc5b8154207c8dd104e7306 upstream.
Commit c0f04d88e46d ("bcache: Fix flushes in writeback mode") was fixing
a reported data corruption bug, but it seems some last minute
refactoring or rebasing introduced a null pointer deref.
Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Reported-by: Gabriel de Perthuis <g2p.code@xxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/bcache/request.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -996,6 +996,7 @@ static void request_write(struct cached_
closure_bio_submit(bio, cl, s->d);
} else {
bch_writeback_add(dc);
+ s->op.cache_bio = bio;
if (bio->bi_rw & REQ_FLUSH) {
/* Also need to send a flush to the backing device */
@@ -1008,8 +1009,6 @@ static void request_write(struct cached_
flush->bi_private = cl;
closure_bio_submit(flush, cl, s->d);
- } else {
- s->op.cache_bio = bio;
}
}
out:
Patches currently in stable-queue which might be from kmo@xxxxxxxxxxxxx are
queue-3.11/bcache-fix-a-null-ptr-deref-regression.patch
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