1 files changed, 1 insertions, 1 deletions

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 9e498c77ed0e..a42eff7e8c48 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -607,7 +607,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
                 /* if no digit is after '-', it's wrong*/
                 if (at_start && in_range)
                         return -EINVAL;
-                if (!(a <= b) || !(used_size <= group_size))
+                if (!(a <= b) || group_size == 0 || !(used_size <= group_size))
                         return -EINVAL;
                 if (b >= nmaskbits)
                         return -ERANGE;