rtlwifi: rtl8192ee: Fix memory leak when loading firmware

[ Upstream commit 519ce2f933fa14acf69d5c8cabcc18711943d629 ]

In routine rtl92ee_set_fw_rsvdpagepkt(), the driver allocates an skb, but
never calls rtl_cmd_send_packet(), which will free the buffer. All other
rtlwifi drivers perform this operation correctly.

This problem has been in the driver since it was included in the kernel.
Fortunately, each firmware load only leaks 4 buffers, which likely
explains why it has not previously been detected.

Cc: Stable <stable@vger.kernel.org> # 3.18+
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>

diff --git a/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c b/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
index c5d4b8013cdefe4cdec015c2c1c2819c5b8e8321..5a0fffaed0f555af15159ee687a5e85cc6959ed3 100644 (file)
--- a/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ee/fw.c
@@ -664,7 +664,7 @@ void rtl92ee_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
        struct sk_buff *skb = NULL;
-
+       bool rtstatus;
        u32 totalpacketlen;
        u8 u1rsvdpageloc[5] = { 0 };
        bool b_dlok = false;
@@ -727,7 +727,9 @@ void rtl92ee_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
        memcpy((u8 *)skb_put(skb, totalpacketlen),
               &reserved_page_packet, totalpacketlen);
 
-       b_dlok = true;
+       rtstatus = rtl_cmd_send_packet(hw, skb);
+       if (rtstatus)
+               b_dlok = true;
 
        if (b_dlok) {
                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD ,