Re: [PATCH] gcov: use atomic counter updates to fix concurrent access crashes

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "only suspicious fbc files changed"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20260402141831.1437357-2-khorenko@virtuozzo.com>
References: <20260402141831.1437357-2-khorenko@virtuozzo.com>
TO: Konstantin Khorenko <khorenko@virtuozzo.com>
TO: Peter Oberparleiter <oberpar@linux.ibm.com>
TO: Mikhail Zaslonko <zaslonko@linux.ibm.com>
TO: Nathan Chancellor <nathan@kernel.org>
TO: Nicolas Schier <nsc@kernel.org>
CC: Masahiro Yamada <masahiroy@kernel.org>
CC: "Thomas Weißschuh" <linux@weissschuh.net>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Steffen Klassert <steffen.klassert@secunet.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: linux-kbuild@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
CC: Konstantin Khorenko <khorenko@virtuozzo.com>
CC: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
CC: Vasileios Almpanis <vasileios.almpanis@virtuozzo.com>
CC: Jakub Kicinski <kuba@kernel.org>

Hi Konstantin,

kernel test robot noticed the following build warnings:

[auto build test WARNING on soc/for-next]
[also build test WARNING on linus/master v7.0-rc7 next-20260410]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Konstantin-Khorenko/gcov-use-atomic-counter-updates-to-fix-concurrent-access-crashes/20260411-133428
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link:    https://lore.kernel.org/r/20260402141831.1437357-2-khorenko%40virtuozzo.com
patch subject: [PATCH] gcov: use atomic counter updates to fix concurrent access crashes
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20260411/202604111946.Erd3tguU-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260411/202604111946.Erd3tguU-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202604111946.Erd3tguU-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> io_uring/io_uring.c:3224:1: warning: target does not support atomic profile update, single mode is selected
    3224 | __initcall(io_uring_init);
         | ^~~~~~~~~~
--
>> io_uring/opdef.c:890:1: warning: target does not support atomic profile update, single mode is selected
     890 | }
         | ^
--
>> io_uring/kbuf.c:740:1: warning: target does not support atomic profile update, single mode is selected
     740 | }
         | ^
--
>> io_uring/rsrc.c:1555:1: warning: target does not support atomic profile update, single mode is selected
    1555 | }
         | ^
--
>> io_uring/notif.c:141:1: warning: target does not support atomic profile update, single mode is selected
     141 | }
         | ^
--
>> io_uring/tctx.c:388:1: warning: target does not support atomic profile update, single mode is selected
     388 | }
         | ^
--
>> io_uring/filetable.c:158:1: warning: target does not support atomic profile update, single mode is selected
     158 | }
         | ^
--
>> io_uring/rw.c:1397:1: warning: target does not support atomic profile update, single mode is selected
    1397 | }
         | ^
--
>> io_uring/poll.c:963:1: warning: target does not support atomic profile update, single mode is selected
     963 | }
         | ^
--
>> io_uring/tw.c:355:1: warning: target does not support atomic profile update, single mode is selected
     355 | }
         | ^
--
>> io_uring/wait.c:308:1: warning: target does not support atomic profile update, single mode is selected
     308 | }
         | ^
..


vim +3224 io_uring/io_uring.c

76d3ccecfa186a io_uring/io_uring.c Matteo Rizzo 2023-08-21  3221  
2b188cc1bb857a fs/io_uring.c       Jens Axboe   2019-01-07  3222  	return 0;
2b188cc1bb857a fs/io_uring.c       Jens Axboe   2019-01-07  3223  };
2b188cc1bb857a fs/io_uring.c       Jens Axboe   2019-01-07 @3224  __initcall(io_uring_init);

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