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| author | Mike Snitzer <snitzer@redhat.com> | 2011-08-02 12:32:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-08 10:36:10 -0700 |
| commit | 1120616a78cceff1b4a417c61b94da35edf09bdf (patch) | |
| tree | dc74dac2234db4782b7d2e8a864362cc9f077b51 | |
| parent | 87c6272e4096149ddee39b6e923c87bbf5bcdd5a (diff) | |
dm mpath: fix potential NULL pointer in feature arg processing
commit 286f367dad40beb3234a18c17391d03ba939a7f3 upstream.
Avoid dereferencing a NULL pointer if the number of feature arguments
supplied is fewer than indicated.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/md/dm-mpath.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index d43e1861143..a1f088b917f 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -782,6 +782,11 @@ static int parse_features(struct arg_set *as, struct multipath *m) if (!argc) return 0; + if (argc > as->argc) { + ti->error = "not enough arguments for features"; + return -EINVAL; + } + do { param_name = shift(as); argc--; |