Commit 286f367d authored by Mike Snitzer's avatar Mike Snitzer Committed by Alasdair G Kergon
Browse files

dm mpath: fix potential NULL pointer in feature arg processing 



Avoid dereferencing a NULL pointer if the number of feature arguments
supplied is fewer than indicated.

Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
Cc: stable@kernel.org
parent 762a80d9

drivers/md/dm-mpath.c

+5 −0
Original line number Diff line number Diff line
@@ -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--;