Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 26 Dec 2019 16:40:09 +0200
From:   Leon Romanovsky <leon@kernel.org>
To:     xiyuyang19@fudan.edu.cn
Cc:     yuanxzhang@fudan.edu.cn, kjlu@umn.edu,
        Xin Tan <tanxin.ctf@gmail.com>,
        Faisal Latif <faisal.latif@intel.com>,
        Shiraz Saleem <shiraz.saleem@intel.com>,
        Doug Ledford <dledford@redhat.com>,
        Jason Gunthorpe <jgg@ziepe.ca>, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] infiniband: i40iw: fix a potential NULL pointer
 dereference
Message-ID: <20191226144009.GE6285@unreal>
References: <1577366516-19556-1-git-send-email-xiyuyang19@fudan.edu.cn>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1577366516-19556-1-git-send-email-xiyuyang19@fudan.edu.cn>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, Dec 26, 2019 at 09:21:56PM +0800, xiyuyang19@fudan.edu.cn wrote:
> From: Xiyu Yang <xiyuyang19@fudan.edu.cn>
>
> in_dev_get may return a NULL object. The fix handles the situation
> by adding a check to avoid NULL pointer dereference on idev,
> as pick_local_ipaddrs does.
>
> Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
> ---
> Changes in v2:
> - Release rtnl lock when in_dev_get return NULL
> Changes in v3:
> - Continue the next loop when in_dev_get return NULL
>
>  drivers/infiniband/hw/i40iw/i40iw_main.c | 2 ++
>  1 file changed, 2 insertions(+)
>

Thanks,
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>