diff options
| -rw-r--r-- | net/core/dev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 636b41f0b32d..17e6281e408c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -9589,6 +9589,11 @@ static int dev_index_reserve(struct net *net, u32 ifindex) { int err; + if (ifindex > INT_MAX) { + DEBUG_NET_WARN_ON_ONCE(1); + return -EINVAL; + } + if (!ifindex) err = xa_alloc_cyclic(&net->dev_by_index, &ifindex, NULL, xa_limit_31b, &net->ifindex, GFP_KERNEL); |