This is a note to let you know that I've just added the patch titled
dm verity fec: fix bufio leaks
to the 4.10-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:
dm-verity-fec-fix-bufio-leaks.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 86e3e83b443669dd2bcc5c8a83b23e3aa0694c0d Mon Sep 17 00:00:00 2001
From: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Date: Fri, 31 Mar 2017 12:32:45 -0700
Subject: dm verity fec: fix bufio leaks
From: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
commit 86e3e83b443669dd2bcc5c8a83b23e3aa0694c0d upstream.
Buffers read through dm_bufio_read() were not released in all code paths.
Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-verity-fec.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -146,8 +146,6 @@ static int fec_decode_bufs(struct dm_ver
block = fec_buffer_rs_block(v, fio, n, i);
res = fec_decode_rs8(v, fio, block, &par[offset], neras);
if (res < 0) {
- dm_bufio_release(buf);
-
r = res;
goto error;
}
@@ -172,6 +170,8 @@ static int fec_decode_bufs(struct dm_ver
done:
r = corrected;
error:
+ dm_bufio_release(buf);
+
if (r < 0 && neras)
DMERR_LIMIT("%s: FEC %llu: failed to correct: %d",
v->data_dev->name, (unsigned long long)rsb, r);
@@ -269,7 +269,7 @@ static int fec_read_bufs(struct dm_verit
&is_zero) == 0) {
/* skip known zero blocks entirely */
if (is_zero)
- continue;
+ goto done;
/*
* skip if we have already found the theoretical
Patches currently in stable-queue which might be from samitolvanen@xxxxxxxxxx are
queue-4.10/dm-verity-fec-fix-bufio-leaks.patch
queue-4.10/dm-verity-fec-limit-error-correction-recursion.patch