1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index e92a0005eeff..922a3385eead 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1070,8 +1070,9 @@ static int switch_pg_num(struct multipath *m, const char *pgstr)
         struct priority_group *pg;
         unsigned pgnum;
         unsigned long flags;
+        char dummy;
 
-        if (!pgstr || (sscanf(pgstr, "%u", &pgnum) != 1) || !pgnum ||
+        if (!pgstr || (sscanf(pgstr, "%u%c", &pgnum, &dummy) != 1) || !pgnum ||
             (pgnum > m->nr_priority_groups)) {
                 DMWARN("invalid PG number supplied to switch_pg_num");
                 return -EINVAL;
@@ -1101,8 +1102,9 @@ static int bypass_pg_num(struct multipath *m, const char *pgstr, int bypassed)
 {
         struct priority_group *pg;
         unsigned pgnum;
+        char dummy;
 
-        if (!pgstr || (sscanf(pgstr, "%u", &pgnum) != 1) || !pgnum ||
+        if (!pgstr || (sscanf(pgstr, "%u%c", &pgnum, &dummy) != 1) || !pgnum ||
             (pgnum > m->nr_priority_groups)) {
                 DMWARN("invalid PG number supplied to bypass_pg");
                 return -EINVAL;