This is a note to let you know that I've just added the patch titled
block: Fix bio_copy_data()
to the 3.10-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:
block-fix-bio_copy_data.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2f6cf0de0281d210061ce976f2d42d246adc75bb Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Date: Mon, 23 Sep 2013 23:17:26 -0700
Subject: block: Fix bio_copy_data()
From: Kent Overstreet <kmo@xxxxxxxxxxxxx>
commit 2f6cf0de0281d210061ce976f2d42d246adc75bb upstream.
The memcpy() in bio_copy_data() was using the wrong offset vars, leading
to data corruption in weird unusual setups.
Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/bio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -917,8 +917,8 @@ void bio_copy_data(struct bio *dst, stru
src_p = kmap_atomic(src_bv->bv_page);
dst_p = kmap_atomic(dst_bv->bv_page);
- memcpy(dst_p + dst_bv->bv_offset,
- src_p + src_bv->bv_offset,
+ memcpy(dst_p + dst_offset,
+ src_p + src_offset,
bytes);
kunmap_atomic(dst_p);
Patches currently in stable-queue which might be from kmo@xxxxxxxxxxxxx are
queue-3.10/block-fix-bio_copy_data.patch
queue-3.10/bcache-fix-a-dumb-journal-discard-bug.patch
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