diff options
| -rw-r--r-- | include/net/genetlink.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h index 771af09e90e..1b177ed803b 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -384,6 +384,9 @@ static inline struct sk_buff *genlmsg_new(size_t payload, gfp_t flags) static inline int genl_set_err(struct genl_family *family, struct net *net, u32 portid, u32 group, int code) { + if (WARN_ON_ONCE(group >= family->n_mcgrps)) + return -EINVAL; + group = family->mcgrp_offset + group; return netlink_set_err(net->genl_sock, portid, group, code); } |