X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=lib%2Fbitmap.c;h=96017c066319e55c96ed61f9a627d4eeeaa10ed1;hb=fc5ee888ab2a5396ec1f5113a4860f1aafc08ecf;hp=d8f0c094b18eba130571a3e405796040750d9646;hpb=aefd140437aab84afeec0be48dd6871c2113a746;p=mirror_ubuntu-bionic-kernel.git

diff --git a/lib/bitmap.c b/lib/bitmap.c
index d8f0c094b18e..96017c066319 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;