This is a note to let you know that I've just added the patch titled
dm mpath: fix potential NULL pointer in feature arg processing
to the 2.6.33-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.33.git;a=summary
The filename of the patch is:
dm-mpath-fix-potential-null-pointer-in-feature-arg.patch
and it can be found in the queue-2.6.33 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.33 longterm
tree,
please let <[email protected]> know about it.
>From 286f367dad40beb3234a18c17391d03ba939a7f3 Mon Sep 17 00:00:00 2001
From: Mike Snitzer <[email protected]>
Date: Tue, 2 Aug 2011 12:32:00 +0100
Subject: dm mpath: fix potential NULL pointer in feature arg processing
From: Mike Snitzer <[email protected]>
commit 286f367dad40beb3234a18c17391d03ba939a7f3 upstream.
Avoid dereferencing a NULL pointer if the number of feature arguments
supplied is fewer than indicated.
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/md/dm-mpath.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -782,6 +782,11 @@ static int parse_features(struct arg_set
if (!argc)
return 0;
+ if (argc > as->argc) {
+ ti->error = "not enough arguments for features";
+ return -EINVAL;
+ }
+
do {
param_name = shift(as);
argc--;
Patches currently in longterm-queue-2.6.33 which might be from
[email protected] are
/home/gregkh/linux/longterm/longterm-queue-2.6.33/queue-2.6.33/dm-mpath-fix-potential-null-pointer-in-feature-arg.patch
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