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Wed, 03 Jun 2020 19:30:33 -0700 (PDT) Subject: Re: kernel/trace/blktrace.c:347:12: sparse: sparse: incorrect type in assignment (different address spaces) To: Chaitanya Kulkarni Cc: kernel test robot , "Jan, Kara," , "kbuild-all@lists.01.org" , "linux-kernel@vger.kernel.org" , Ming Lei , Bart Van Assche References: <202006031903.CiDVFCgm%lkp@intel.com> From: Jens Axboe Message-ID: <1327a77d-3c9e-31d3-0b14-454803068402@kernel.dk> Date: Wed, 3 Jun 2020 20:30:31 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 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 6/3/20 4:34 PM, Chaitanya Kulkarni wrote: > Jens, > > On 6/3/20 4:32 AM, kernel test robot wrote: >> tree:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head: d6f9469a03d832dcd17041ed67774ffb5f3e73b3 >> commit: c780e86dd48ef6467a1146cf7d0fe1e05a635039 blktrace: Protect q->blk_trace with RCU >> date: 3 months ago >> config: arc-randconfig-s031-20200603 (attached as .config) >> compiler: arc-elf-gcc (GCC) 9.3.0 >> reproduce: >> # apt-get install sparse >> # sparse version: v0.6.1-244-g0ee050a8-dirty >> git checkout c780e86dd48ef6467a1146cf7d0fe1e05a635039 >> # save the attached .config to linux build tree >> make W=1 C=1 ARCH=arc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' >> >> If you fix the issue, kindly add following tag as appropriate >> Reported-by: kernel test robot > > I think Jan has sent the patch to fix the rcu and I've sent out the > series to fix the rest of the issues. > > Can you please let me know how can we proceed with the series so that > we can stop these emails ? Which patch from Jan? I saw one, and it had issues. Then there's a second one, which is ordered behind a series that's not in my tree and wasn't queued for 5.8. And finally, there's your series, which seemed to be a subset of Jan's patch for patch 1. So it's really not very clear. Maybe if folks got together and actually put together a series to fix this it would be easier to get this done. -- Jens Axboe