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Date:   Sat, 25 May 2019 11:00:29 -0700 (PDT)
Message-Id: <20190525.110029.1339691720534150701.davem@davemloft.net>
To:     blackgod016574@gmail.com
Cc:     kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ipv6_sockglue: Fix a missing-check bug in
 ip6_ra_control()
From:   David Miller <davem@davemloft.net>
In-Reply-To: <20190524031946.GA6463@zhanggen-UX430UQ>
References: <20190524031946.GA6463@zhanggen-UX430UQ>
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From: Gen Zhang <blackgod016574@gmail.com>
Date: Fri, 24 May 2019 11:19:46 +0800

> In function ip6_ra_control(), the pointer new_ra is allocated a memory 
> space via kmalloc(). And it is used in the following codes. However, 
> when there is a memory allocation error, kmalloc() fails. Thus null 
> pointer dereference may happen. And it will cause the kernel to crash. 
> Therefore, we should check the return value and handle the error.
> 
> Signed-off-by: Gen Zhang <blackgod016574@gmail.com>

Applied.