diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index 8ba8c70571fb..7fb8bbaf2142 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -141,9 +141,9 @@ static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb, } /* iwl_mvm_create_skb Adds the rxb to a new skb */ -static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr, - u16 len, u8 crypt_len, - struct iwl_rx_cmd_buffer *rxb) +static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb, + struct ieee80211_hdr *hdr, u16 len, u8 crypt_len, + struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; @@ -184,6 +184,20 @@ static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr, * present before copying packet data. */ hdrlen += crypt_len; + + if (WARN_ONCE(headlen < hdrlen, + "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", + hdrlen, len, crypt_len)) { + /* + * We warn and trace because we want to be able to see + * it in trace-cmd as well. + */ + IWL_DEBUG_RX(mvm, + "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", + hdrlen, len, crypt_len); + return -EINVAL; + } + skb_put_data(skb, hdr, hdrlen); skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); @@ -196,6 +210,8 @@ static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr, skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, fraglen, rxb->truesize); } + + return 0; } /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ @@ -1033,7 +1049,11 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, rx_status->boottime_ns = ktime_get_boot_ns(); } - iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb); + if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) { + kfree_skb(skb); + goto out; + } + if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc)) iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta); out: