This is a note to let you know that I've just added the patch titled
GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next
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:
gfs2-fix-reference-to-err_ptr-in-gfs2_glock_iter_next.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Oct 5 10:49:14 CEST 2017
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed, 14 Dec 2016 08:02:03 -0600
Subject: GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
[ Upstream commit 14d37564fa3dc4e5d4c6828afcd26ac14e6796c5 ]
This patch fixes a place where function gfs2_glock_iter_next can
reference an invalid error pointer.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Bob Peterson <rpeterso@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/gfs2/glock.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1798,16 +1798,18 @@ void gfs2_glock_exit(void)
static void gfs2_glock_iter_next(struct gfs2_glock_iter *gi)
{
- do {
- gi->gl = rhashtable_walk_next(&gi->hti);
+ while ((gi->gl = rhashtable_walk_next(&gi->hti))) {
if (IS_ERR(gi->gl)) {
if (PTR_ERR(gi->gl) == -EAGAIN)
continue;
gi->gl = NULL;
+ return;
}
- /* Skip entries for other sb and dead entries */
- } while ((gi->gl) && ((gi->sdp != gi->gl->gl_name.ln_sbd) ||
- __lockref_is_dead(&gi->gl->gl_lockref)));
+ /* Skip entries for other sb and dead entries */
+ if (gi->sdp == gi->gl->gl_name.ln_sbd &&
+ !__lockref_is_dead(&gi->gl->gl_lockref))
+ return;
+ }
}
static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos)
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-4.4/gfs2-fix-reference-to-err_ptr-in-gfs2_glock_iter_next.patch
queue-4.4/asoc-dapm-fix-some-pointer-error-handling.patch