X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fpid.c;h=57a8346a270e07702e21d7bab15303427bf2fce0;hb=80d02085d99039b3b7f3a73c8896226b0cb1ba07;hp=02f221274265ead8f24d98be78d669d5888e62fe;hpb=4bbba111d94781d34081c37856bbc5eb33f6c72a;p=karo-tx-linux.git

diff --git a/kernel/pid.c b/kernel/pid.c
index 02f221274265..57a8346a270e 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -217,11 +217,14 @@ static int alloc_pidmap(struct pid_namespace *pid_ns)
 	return -1;
 }
 
-int next_pidmap(struct pid_namespace *pid_ns, int last)
+int next_pidmap(struct pid_namespace *pid_ns, unsigned int last)
 {
 	int offset;
 	struct pidmap *map, *end;
 
+	if (last >= PID_MAX_LIMIT)
+		return -1;
+
 	offset = (last + 1) & BITS_PER_PAGE_MASK;
 	map = &pid_ns->pidmap[(last + 1)/BITS_PER_PAGE];
 	end = &pid_ns->pidmap[PIDMAP_ENTRIES];