linux-hardening - [PATCH 2/2] libertas_tf: Add missing _

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Date:   Wed,  1 Dec 2021 09:32:34 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Kees Cook <keescook@...omium.org>,
        kernel test robot <lkp@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Wan Jiabing <wanjiabing@...o.com>,
        "John W. Linville" <linville@...driver.com>,
        Luis Carlos Cobo <luisca@...ybit.com>,
        linux-kernel@...r.kernel.org, libertas-dev@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: [PATCH 2/2] libertas_tf: Add missing __packed annotations

The earlier __packed annotations added in commit d71038c05970 ("libertas:
Fix alignment issues in libertas core") were not duplicated when
libertas_af was added in commit 7670e62c7ed6 ("libertas_tf: header file"),
even though they share several structure definitions. Add the missing
annotations which commit 642a57475b30 ("libertas_tf: Use struct_group()
for memcpy() region") exposed. Quoting the prior libertas fix: "Data
structures that come over the wire from the WLAN firmware must be
packed."

Reported-by: kernel test robot <lkp@...el.com>
Link: https://lore.kernel.org/linux-mm/202111302102.apaePz2J-lkp@intel.com
Fixes: 642a57475b30 ("libertas_tf: Use struct_group() for memcpy() region")
Fixes: 7670e62c7ed6 ("libertas_tf: header file")
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 .../marvell/libertas_tf/libertas_tf.h         | 28 +++++++++----------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/marvell/libertas_tf/libertas_tf.h b/drivers/net/wireless/marvell/libertas_tf/libertas_tf.h
index b2af2ddb6bc4..631b5da09f86 100644
--- a/drivers/net/wireless/marvell/libertas_tf/libertas_tf.h
+++ b/drivers/net/wireless/marvell/libertas_tf/libertas_tf.h
@@ -268,7 +268,7 @@ struct txpd {
 	__le32 tx_packet_location;
 	/* Tx packet length */
 	__le16 tx_packet_length;
-	struct_group(tx_dest_addr,
+	struct_group_attr(tx_dest_addr, __packed,
 		/* First 2 byte of destination MAC address */
 		u8 tx_dest_addr_high[2];
 		/* Last 4 byte of destination MAC address */
@@ -282,7 +282,7 @@ struct txpd {
 	u8 pktdelay_2ms;
 	/* reserved */
 	u8 reserved1;
-};
+} __packed;
 
 /* RxPD Descriptor */
 struct rxpd {
@@ -313,7 +313,7 @@ struct rxpd {
 	/* Pkt Priority */
 	u8 priority;
 	u8 reserved[3];
-};
+} __packed;
 
 struct cmd_header {
 	__le16 command;
@@ -379,14 +379,14 @@ struct cmd_ds_mac_control {
 	struct cmd_header hdr;
 	__le16 action;
 	u16 reserved;
-};
+} __packed;
 
 struct cmd_ds_802_11_mac_address {
 	struct cmd_header hdr;
 
 	__le16 action;
 	uint8_t macadd[ETH_ALEN];
-};
+} __packed;
 
 struct cmd_ds_mac_multicast_addr {
 	struct cmd_header hdr;
@@ -394,27 +394,27 @@ struct cmd_ds_mac_multicast_addr {
 	__le16 action;
 	__le16 nr_of_adrs;
 	u8 maclist[ETH_ALEN * MRVDRV_MAX_MULTICAST_LIST_SIZE];
-};
+} __packed;
 
 struct cmd_ds_set_mode {
 	struct cmd_header hdr;
 
 	__le16 mode;
-};
+} __packed;
 
 struct cmd_ds_set_bssid {
 	struct cmd_header hdr;
 
 	u8 bssid[6];
 	u8 activate;
-};
+} __packed;
 
 struct cmd_ds_802_11_radio_control {
 	struct cmd_header hdr;
 
 	__le16 action;
 	__le16 control;
-};
+} __packed;
 
 
 struct cmd_ds_802_11_rf_channel {
@@ -425,20 +425,20 @@ struct cmd_ds_802_11_rf_channel {
 	__le16 rftype;      /* unused */
 	__le16 reserved;    /* unused */
 	u8 channellist[32]; /* unused */
-};
+} __packed;
 
 struct cmd_ds_set_boot2_ver {
 	struct cmd_header hdr;
 
 	__le16 action;
 	__le16 version;
-};
+} __packed;
 
 struct cmd_ds_802_11_reset {
 	struct cmd_header hdr;
 
 	__le16 action;
-};
+} __packed;
 
 struct cmd_ds_802_11_beacon_control {
 	struct cmd_header hdr;
@@ -446,14 +446,14 @@ struct cmd_ds_802_11_beacon_control {
 	__le16 action;
 	__le16 beacon_enable;
 	__le16 beacon_period;
-};
+} __packed;
 
 struct cmd_ds_802_11_beacon_set {
 	struct cmd_header hdr;
 
 	__le16 len;
 	u8 beacon[MRVL_MAX_BCN_SIZE];
-};
+} __packed;
 
 struct cmd_ctrl_node;
 
-- 
2.30.2