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authorDavid S. Miller <davem@davemloft.net>2021-02-11 00:30:12 +0300
committerDavid S. Miller <davem@davemloft.net>2021-02-11 00:30:12 +0300
commitdc9d87581d464e7b7d38853d6904b70b6c920d99 (patch)
tree15aa27fefb867814899c0a0c194adf327675ba10 /kernel/bpf/stackmap.c
parentde1db4a6ed6241e34cab0e5059d4b56f6bae39b9 (diff)
parent291009f656e8eaebbdfd3a8d99f6b190a9ce9deb (diff)
downloadlinux-dc9d87581d464e7b7d38853d6904b70b6c920d99.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'kernel/bpf/stackmap.c')
-rw-r--r--kernel/bpf/stackmap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
index cabaf7db8efc..be35bfb7fb13 100644
--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -114,6 +114,8 @@ static struct bpf_map *stack_map_alloc(union bpf_attr *attr)
/* hash table size must be power of 2 */
n_buckets = roundup_pow_of_two(attr->max_entries);
+ if (!n_buckets)
+ return ERR_PTR(-E2BIG);
cost = n_buckets * sizeof(struct stack_map_bucket *) + sizeof(*smap);
cost += n_buckets * (value_size + sizeof(struct stack_map_bucket));