From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 16 Jul 2018 15:14:46 +0200 From: Stefano Brivio Subject: Re: [PATCH net V2 1/1] net/smc: take sock lock in smc_ioctl() Message-ID: <20180716151446.088ffc3b@epycfail> In-Reply-To: <20180716115652.72331-1-ubraun@linux.ibm.com> References: <20180716115652.72331-1-ubraun@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: Ursula Braun Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.ibm.com, linux-kernel@vger.kernel.org, eric.dumazet@gmail.com, lifeasageek@gmail.com List-ID: On Mon, 16 Jul 2018 13:56:52 +0200 Ursula Braun wrote: > From: Ursula Braun > > SMC ioctl processing requires the sock lock to work properly in > all thinkable scenarios. > Problem has been found with RaceFuzzer and fixes: > KASAN: null-ptr-deref Read in smc_ioctl > > Reported-by: Byoungyoung Lee > Reported-by: syzbot+35b2c5aa76fd398b9fd4@syzkaller.appspotmail.com > Signed-off-by: Ursula Braun Reviewed-by: Stefano Brivio -- Stefano