From: Mukesh Ojha <mojha@codeaurora.org>
To: Aditya Pakki <pakki001@umn.edu>
Cc: kjlu@umn.edu, Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sabin Mihai Rapan <sabin.rapan@gmail.com>,
Nathan Chancellor <natechancellor@gmail.com>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] staging: rtlwifi: rtl8822b: fix to avoid NULL pointer dereference
Date: Thu, 21 Mar 2019 01:58:49 +0530 [thread overview]
Message-ID: <1d27e981-1407-3498-03a5-926abec634f3@codeaurora.org> (raw)
In-Reply-To: <20190320170251.31838-1-pakki001@umn.edu>
On 3/20/2019 10:32 PM, Aditya Pakki wrote:
> 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>
>
> ---
> v2: Move signed off above the version change log
> v1: Patch collision with rtl_phydm.c, fix as per Greg
> ---
> drivers/staging/rtlwifi/rtl8822be/fw.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/staging/rtlwifi/rtl8822be/fw.c b/drivers/staging/rtlwifi/rtl8822be/fw.c
> index f061dd1382aa..cf6b7a80b753 100644
> --- a/drivers/staging/rtlwifi/rtl8822be/fw.c
> +++ b/drivers/staging/rtlwifi/rtl8822be/fw.c
> @@ -743,6 +743,8 @@ 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);
>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
prev parent reply other threads:[~2019-03-20 20:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-20 17:02 Aditya Pakki
2019-03-20 20:28 ` Mukesh Ojha [this message]
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