From 238495f05ba578d7cb4634fe35ac39778e88bccd Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Mon, 25 Jul 2011 10:49:50 +1000 Subject: [PATCH] Avoid dereferencing a NULL pointer if the number of feature arguments supplied is fewer than indicated. Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon Cc: stable@kernel.org --- drivers/md/dm-mpath.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index aa4e570c2cb5..209991bebd30 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -807,6 +807,11 @@ 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--; -- 2.39.5