From: Avraham Stern Date: Tue, 17 May 2022 09:05:13 +0000 (+0300) Subject: iwlwifi: mei: clear the sap data header before sending X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=55cf10488d7a9fa1b1b473a5e44a80666932e094;p=linux.git iwlwifi: mei: clear the sap data header before sending The SAP data header has some fields that are marked as reserved but are actually in use by CSME. Clear those fields before sending the data to avoid having random values in those fields. Cc: stable@vger.kernel.org Signed-off-by: Avraham Stern Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20220517120045.8dd3423cf683.I02976028eaa6aab395cb2e701fa7127212762eb7@changeid Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c index b4f45234cfc89..3d2eb15a96621 100644 --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c @@ -493,6 +493,7 @@ void iwl_mei_add_data_to_ring(struct sk_buff *skb, bool cb_tx) if (cb_tx) { struct iwl_sap_cb_data *cb_hdr = skb_push(skb, sizeof(*cb_hdr)); + memset(cb_hdr, 0, sizeof(*cb_hdr)); cb_hdr->hdr.type = cpu_to_le16(SAP_MSG_CB_DATA_PACKET); cb_hdr->hdr.len = cpu_to_le16(skb->len - sizeof(cb_hdr->hdr)); cb_hdr->hdr.seq_num = cpu_to_le32(atomic_inc_return(&mei->sap_seq_no));