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rtlwifi: fix potential NULL pointer dereference

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[ Upstream commit 60209d482b ]

In case dev_alloc_skb fails, the fix safely returns to avoid
potential NULL pointer dereference.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ping-Ke Shih
2019-03-12 17:06:48 +08:00
committed by Greg Kroah-Hartman
parent ae087a4a56
commit 09ef780d7d
6 changed files with 14 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/fw.c
View File

@@ -620,6 +620,8 @@ void rtl88e_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
u1rsvdpageloc, 3);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);

2
drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
View File

@@ -647,6 +647,8 @@ void rtl92c_set_fw_rsvdpagepkt(struct ieee80211_hw *hw,
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet, totalpacketlen);
if (cmd_send_packet)

2
drivers/net/wireless/realtek/rtlwifi/rtl8192ee/fw.c
View File

@@ -766,6 +766,8 @@ void rtl92ee_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
u1rsvdpageloc, 3);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);

2
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/fw.c
View File

@@ -470,6 +470,8 @@ void rtl8723e_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
u1rsvdpageloc, 3);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);

2
drivers/net/wireless/realtek/rtlwifi/rtl8723be/fw.c
View File

@@ -584,6 +584,8 @@ void rtl8723be_set_fw_rsvdpagepkt(struct ieee80211_hw *hw,
u1rsvdpageloc, sizeof(u1rsvdpageloc));
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);

4
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/fw.c
View File

@@ -1645,6 +1645,8 @@ out:
&reserved_page_packet_8812[0], totalpacketlen);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet_8812, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);
@@ -1781,6 +1783,8 @@ out:
&reserved_page_packet_8821[0], totalpacketlen);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
skb_put_data(skb, &reserved_page_packet_8821, totalpacketlen);
rtstatus = rtl_cmd_send_packet(hw, skb);