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X-CSE-ConnectionGUID: 2JtRNSMFTmqIzDo1cXpiaA== X-CSE-MsgGUID: I4PTFItNSy2ktDqLznb8lg== X-IronPort-AV: E=McAfee;i="6800,10657,11696"; a="70770200" X-IronPort-AV: E=Sophos;i="6.21,282,1763452800"; d="scan'208";a="70770200" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2026 05:53:15 -0800 X-CSE-ConnectionGUID: 9CSNzQTwREiTVAl9nRYqMQ== X-CSE-MsgGUID: 3Et46yZ6SCybjpA9xPlm7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,282,1763452800"; d="scan'208";a="216094724" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 09 Feb 2026 05:53:13 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vpRhO-00000000nQY-2eE4; Mon, 09 Feb 2026 13:53:10 +0000 Date: Mon, 09 Feb 2026 21:52:26 +0800 From: kernel test robot To: SeongJae Park Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [sj:damon/next 112/124] mm/damon/core.c:1862:4: error: use of undeclared identifier 'c' Message-ID: <202602092126.d6pfqcbG-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next head: 74672caf715ec5f49e15d405b8030ce9cb686d4f commit: 7fdffc23ed84ea44a9f15f71d15b00a94f326acd [112/124] mm/damon/core: unify damon_warn_fix_nr_accesses_corruption() with damon_verify_reset_aggregated() config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20260209/202602092126.d6pfqcbG-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260209/202602092126.d6pfqcbG-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202602092126.d6pfqcbG-lkp@intel.com/ All errors (new ones prefixed by >>): >> mm/damon/core.c:1862:4: error: use of undeclared identifier 'c' 1862 | c->passed_sample_intervals, | ^ mm/damon/core.c:1863:4: error: use of undeclared identifier 'c' 1863 | c->next_aggregation_sis); | ^ 2 errors generated. vim +/c +1862 mm/damon/core.c 89796f03081328 SeongJae Park 2025-12-02 1844 591c4c78be0636 SeongJae Park 2025-05-12 1845 /* 591c4c78be0636 SeongJae Park 2025-05-12 1846 * Warn and fix corrupted ->nr_accesses[_bp] for investigations and preventing 591c4c78be0636 SeongJae Park 2025-05-12 1847 * the problem being propagated. 591c4c78be0636 SeongJae Park 2025-05-12 1848 */ 591c4c78be0636 SeongJae Park 2025-05-12 1849 static void damon_warn_fix_nr_accesses_corruption(struct damon_region *r) 591c4c78be0636 SeongJae Park 2025-05-12 1850 { 591c4c78be0636 SeongJae Park 2025-05-12 1851 if (r->nr_accesses_bp == r->nr_accesses * 10000) 591c4c78be0636 SeongJae Park 2025-05-12 1852 return; 7fdffc23ed84ea SeongJae Park 2026-02-04 1853 #ifndef CONFIG_DAMON_HARDENED 591c4c78be0636 SeongJae Park 2025-05-12 1854 WARN_ONCE(true, "invalid nr_accesses_bp at reset: %u %u\n", 591c4c78be0636 SeongJae Park 2025-05-12 1855 r->nr_accesses_bp, r->nr_accesses); 591c4c78be0636 SeongJae Park 2025-05-12 1856 r->nr_accesses_bp = r->nr_accesses * 10000; 7fdffc23ed84ea SeongJae Park 2026-02-04 1857 #else 5b9f4fef2cb618 SeongJae Park 2026-01-03 1858 pr_err("reset time invalid region found!\n"); 5b9f4fef2cb618 SeongJae Park 2026-01-03 1859 pr_err("nr_accesses_bp %u last_nr_acceses %u\n", 5b9f4fef2cb618 SeongJae Park 2026-01-03 1860 r->nr_accesses_bp, r->last_nr_accesses); 5b9f4fef2cb618 SeongJae Park 2026-01-03 1861 pr_err("passed_sis %lu next_aggregation_sis %lu\n", 5b9f4fef2cb618 SeongJae Park 2026-01-03 @1862 c->passed_sample_intervals, 5b9f4fef2cb618 SeongJae Park 2026-01-03 1863 c->next_aggregation_sis); 5b9f4fef2cb618 SeongJae Park 2026-01-03 1864 BUG(); 5b9f4fef2cb618 SeongJae Park 2026-01-03 1865 #endif 7fdffc23ed84ea SeongJae Park 2026-02-04 1866 } 5b9f4fef2cb618 SeongJae Park 2026-01-03 1867 :::::: The code at line 1862 was first introduced by commit :::::: 5b9f4fef2cb618ee597b3345dee579340e8d5d43 mm/damon/core: add damon_reset_aggregated() hardening :::::: TO: SeongJae Park :::::: CC: SeongJae Park -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki