Re: [PATCH v32 11/12] LRNG - add interface for gathering of raw entropy

From: kernel test robot <lkp@intel.com>
To: "Stephan Müller" <smueller@chronox.de>, "Arnd Bergmann" <arnd@arndb.de>
Cc: kbuild-all@lists.01.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-crypto@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
	linux-api@vger.kernel.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	"Alexander E. Patrakov" <patrakov@gmail.com>,
	"Ahmed S. Darwish" <darwish.07@gmail.com>,
	"Theodore Y. Ts'o" <tytso@mit.edu>, Willy Tarreau <w@1wt.eu>
Subject: Re: [PATCH v32 11/12] LRNG - add interface for gathering of raw entropy
Date: Thu, 20 Aug 2020 20:47:40 +0800	[thread overview]
Message-ID: <202008202054.qULUy9li%lkp@intel.com> (raw)
In-Reply-To: <2063216.NgBsaNRSFp@positron.chronox.de>

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Hi "Stephan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on cryptodev/master crypto/master v5.9-rc1 next-20200820]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Stephan-M-ller/dev-random-a-new-approach-with-full-SP800-90B-compliance/20200820-165712
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git d162219c655c8cf8003128a13840d6c1e183fb80
config: nios2-allyesconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/char/lrng/lrng_testing.c:255:15: warning: initialized field overwritten [-Woverride-init]
     255 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:255:15: note: (near initialization for 'lrng_raw_hires.rb_reader')
   drivers/char/lrng/lrng_testing.c:295:15: warning: initialized field overwritten [-Woverride-init]
     295 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:295:15: note: (near initialization for 'lrng_raw_jiffies.rb_reader')
   drivers/char/lrng/lrng_testing.c:336:15: warning: initialized field overwritten [-Woverride-init]
     336 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:336:15: note: (near initialization for 'lrng_raw_irq.rb_reader')
   drivers/char/lrng/lrng_testing.c:376:15: warning: initialized field overwritten [-Woverride-init]
     376 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:376:15: note: (near initialization for 'lrng_raw_irqflags.rb_reader')
   drivers/char/lrng/lrng_testing.c:417:15: warning: initialized field overwritten [-Woverride-init]
     417 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:417:15: note: (near initialization for 'lrng_raw_retip.rb_reader')
   drivers/char/lrng/lrng_testing.c:457:15: warning: initialized field overwritten [-Woverride-init]
     457 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:457:15: note: (near initialization for 'lrng_raw_array.rb_reader')
   drivers/char/lrng/lrng_testing.c:497:15: warning: initialized field overwritten [-Woverride-init]
     497 |  .rb_reader = 0,
         |               ^
   drivers/char/lrng/lrng_testing.c:497:15: note: (near initialization for 'lrng_irq_perf.rb_reader')

# https://github.com/0day-ci/linux/commit/89b15c614286cea77d633ade2a9045060a492149
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Stephan-M-ller/dev-random-a-new-approach-with-full-SP800-90B-compliance/20200820-165712
git checkout 89b15c614286cea77d633ade2a9045060a492149
vim +255 drivers/char/lrng/lrng_testing.c

   252	
   253	static struct lrng_testing lrng_raw_hires = {
   254		.rb_reader = 0,
 > 255		.rb_reader = 0,
   256		.lock      = __SPIN_LOCK_UNLOCKED(lrng_raw_hires.lock),
   257		.read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_hires.read_wait)
   258	};
   259	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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