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X-CSE-ConnectionGUID: wGEyG0ddTjWW9w0xyUpsmg== X-CSE-MsgGUID: kcj5ErerQP6wEJXytmftYA== X-IronPort-AV: E=McAfee;i="6800,10657,11835"; a="83855768" X-IronPort-AV: E=Sophos;i="6.25,145,1779174000"; d="scan'208";a="83855768" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2026 20:51:51 -0700 X-CSE-ConnectionGUID: 3MTRuTKxQ+eiBOhpi4LhRA== X-CSE-MsgGUID: qcVS1yt2ReWh25gYWWBLXQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,145,1779174000"; d="scan'208";a="283099229" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by orviesa002.jf.intel.com with ESMTP; 02 Jul 2026 20:51:48 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1wfUwL-00000000BdX-1SwI; Fri, 03 Jul 2026 03:51:45 +0000 Date: Fri, 03 Jul 2026 11:51:39 +0800 From: kernel test robot To: Paolo Abeni Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, mptcp@lists.linux.dev, matthieu.baerts@tessares.net, Jakub Kicinski , "Matthieu Baerts (NGI0)" Subject: include/linux/compiler_types.h:699:45: error: call to '__compiletime_assert_881' declared with attribute error: BUILD_BUG_ON failed: sizeof_field(struct mptcp_ext, flags) != sizeof(u16) Message-ID: <202607031100.upQfRZTM-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 51512e22efe813d8223de27f6fd02a8a48ea2323 commit: 5e939544f9d2b4d5c052a07cfcde97de44263946 mptcp: fix uninit-value in mptcp_established_options date: 4 weeks ago config: arm-randconfig-r051-20260702 (https://download.01.org/0day-ci/archive/20260703/202607031100.upQfRZTM-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 16.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260703/202607031100.upQfRZTM-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 | Fixes: 5e939544f9d2 ("mptcp: fix uninit-value in mptcp_established_options") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202607031100.upQfRZTM-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from : In function 'mptcp_established_options_dss', inlined from 'mptcp_established_options' at net/mptcp/options.c:881:11: >> include/linux/compiler_types.h:699:45: error: call to '__compiletime_assert_881' declared with attribute error: BUILD_BUG_ON failed: sizeof_field(struct mptcp_ext, flags) != sizeof(u16) 699 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:680:25: note: in definition of macro '__compiletime_assert' 680 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:699:9: note: in expansion of macro '_compiletime_assert' 699 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:40:37: note: in expansion of macro 'compiletime_assert' 40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:51:9: note: in expansion of macro 'BUILD_BUG_ON_MSG' 51 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ net/mptcp/options.c:576:9: note: in expansion of macro 'BUILD_BUG_ON' 576 | BUILD_BUG_ON(sizeof_field(struct mptcp_ext, flags) != sizeof(u16)); | ^~~~~~~~~~~~ vim +/__compiletime_assert_881 +699 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 685 eb5c2d4b45e3d2 Will Deacon 2020-07-21 686 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 687 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 688 eb5c2d4b45e3d2 Will Deacon 2020-07-21 689 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 690 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 691 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 692 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 693 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 694 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 695 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 696 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 697 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 698 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @699 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 700 :::::: The code at line 699 was first introduced by commit :::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h :::::: TO: Will Deacon :::::: CC: Will Deacon -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki