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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id y4sm45679504qtc.47.2019.01.10.17.30.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Jan 2019 17:30:56 -0800 (PST) Subject: Re: PROBLEM: syzkaller found / pool corruption-overwrite / page in user-area or NULL To: Esme Cc: James Bottomley , "dgilbert@interlog.com" , "martin.petersen@oracle.com" , "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" References: <1547150339.2814.9.camel@linux.ibm.com> <1547153074.6911.8.camel@lca.pw> <4u36JfbOrbu9CXLDErzQKvorP0gc2CzyGe60rBmZsGAGIw6RacZnIfoSsAF0I0TCnVx0OvcqCZFN6ntbgicJ66cWew9cOXRgcuWxSPdL3ko=@protonmail.ch> <1547154231.6911.10.camel@lca.pw> <1547159604.6911.12.camel@lca.pw> From: Qian Cai Message-ID: <7416c812-f452-9c23-9d0c-37eac0174231@lca.pw> Date: Thu, 10 Jan 2019 20:30:55 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/10/19 5:58 PM, Esme wrote: > The console debug/stacks/info from just now. The previous config, current kernel from github. > -- > Esme > > [ 75.783231] kasan: CONFIG_KASAN_INLINE enabled > [ 75.785870] kasan: GPF could be caused by NULL-ptr deref or user memory access > [ 75.787695] general protection fault: 0000 [#1] SMP KASAN > [ 75.789084] CPU: 0 PID: 3434 Comm: systemd-journal Not tainted 5.0.0-rc1+ #5 > [ 75.790938] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1ubuntu1 04/01/2014 > [ 75.793150] RIP: 0010:rb_insert_color+0x189/0x1480 What's in that line? Try, $ ./scripts/faddr2line vmlinux rb_insert_color+0x189/0x1480 What's steps to reproduce this?