linux-kernel - Re: [rcu:dev.2020.06.02a 67/90] kernel/rcu/rcuperf.c:727:38: warning: format specifies type 'size_t' (aka 'unsigned int') but the argument has type 'unsigned long'

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Message-ID: <20200608160629.GJ4455@paulmck-ThinkPad-P72>
Date:   Mon, 8 Jun 2020 09:06:29 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        kernel test robot <lkp@...el.com>,
        Ingo Molnar <mingo@...nel.org>, kbuild-all@...ts.01.org,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev.2020.06.02a 67/90] kernel/rcu/rcuperf.c:727:38:
 warning: format specifies type 'size_t' (aka 'unsigned int') but the
 argument has type 'unsigned long'

On Sun, Jun 07, 2020 at 08:26:32PM -0700, Nathan Chancellor wrote:
> On Mon, Jun 08, 2020 at 09:56:16AM +0800, Kefeng Wang wrote:
> > 
> > On 2020/6/8 3:00, Paul E. McKenney wrote:
> > > On Fri, Jun 05, 2020 at 05:19:14PM -0700, Paul E. McKenney wrote:
> > > > On Sat, Jun 06, 2020 at 07:07:10AM +0800, kernel test robot wrote:
> > > > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.06.02a
> > > > > head:   5216948905dd07a84cef8a7dc72c2ec076802efd
> > > > > commit: 7d16add62717136b1839f0b3d7ea4cbb98f38c2a [67/90] rcuperf: Fix kfree_mult to match printk() format
> > > > > config: arm-randconfig-r004-20200605 (attached as .config)
> > > > > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 6dd738e2f0609f7d3313b574a1d471263d2d3ba1)
> > > > > reproduce (this is a W=1 build):
> > > > >          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > > > >          chmod +x ~/bin/make.cross
> > > > >          # install arm cross compiling tool for clang build
> > > > >          # apt-get install binutils-arm-linux-gnueabi
> > > > >          git checkout 7d16add62717136b1839f0b3d7ea4cbb98f38c2a
> > > > >          # save the attached .config to linux build tree
> > > > >          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
> > > > > 
> > > > > If you fix the issue, kindly add following tag as appropriate
> > > > > Reported-by: kernel test robot <lkp@...el.com>
> > > > Adding Kefeng on CC.  Kefeng, thoughts?
> > > Like this, perhaps?
> > 
> > Hi Paul，I check https://lkml.org/lkml/2020/6/2/286 and <https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/log/?h=dev.2020.06.02a>
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/log/?h=dev.2020.06.02a
> > 
> > There are two different ways to fix the same issue
> > 
> > patch 1:  rcuperf: Fix printk format warning urgent-for-mingo
> > 
> > patch 2:  'rcuperf: Fix kfree_mult to match printk() format' from Ingo 
> > after my patch
> > 
> > since patch1 already merged,  patch2 is not needed, so skip patch2?

Good point, done, and thank you both!

							Thanx, Paul