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staging: rtlwifi: rtl8822b: fix to avoid potential NULL pointer dereference

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[ Upstream commit d70d70aec9632679dd00dcc1b1e8b2517e2c7da0 ]

skb allocated via dev_alloc_skb can fail and return a NULL pointer.
This patch avoids such a scenario and returns, consistent with other
invocations.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
This commit is contained in:
Aditya Pakki 2019-03-20 12:02:49 -05:00 committed by Greg Kroah-Hartman
parent 6849e040a9
commit 726d8583ab
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/rtlwifi/rtl8822be/fw.c
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@ -752,6 +752,8 @@ void rtl8822be_set_fw_rsvdpagepkt(struct ieee80211_hw *hw, bool b_dl_finished)
u1_rsvd_page_loc, 3);
skb = dev_alloc_skb(totalpacketlen);
if (!skb)
return;
memcpy((u8 *)skb_put(skb, totalpacketlen), &reserved_page_packet,
totalpacketlen);