diff options
| -rw-r--r-- | mm/mempolicy.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 72f402cc9c9a..6e870ba707c7 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -524,6 +524,8 @@ static int get_nodes(nodemask_t *nodes, unsigned long __user *nmask, nodes_clear(*nodes); if (maxnode == 0 || !nmask) return 0; + if (maxnode > PAGE_SIZE*BITS_PER_BYTE) + return -EINVAL; nlongs = BITS_TO_LONGS(maxnode); if ((maxnode % BITS_PER_LONG) == 0) |