Hi Yunseong, kernel test robot noticed the following build warnings:
[auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus kees/for-next/pstore kees/for-next/kspp shuah-kselftest/next shuah-kselftest/fixes soc/for-next linus/master v7.0-rc6 next-20260403] [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/Yunseong-Kim/lkdtm-Add-folio_lock-deadlock-scenarios/20260405-145013 base: char-misc/char-misc-testing patch link: https://lore.kernel.org/r/20260402143947.162844-1-ysk%40kzalloc.com patch subject: [PATCH] lkdtm: Add folio_lock deadlock scenarios config: s390-randconfig-001-20260405 (https://download.01.org/0day-ci/archive/20260405/[email protected]/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project c80443cd37b2e2788cba67ffa180a6331e5f0791) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260405/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): >> drivers/misc/lkdtm/deadlock.c:99:44: warning: omitting the parameter name in >> a function definition is a C23 extension [-Wc23-extensions] 99 | static int lkdtm_folio_mutex_kthread(void *) | ^ drivers/misc/lkdtm/deadlock.c:112:44: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions] 112 | static int lkdtm_mutex_folio_kthread(void *) | ^ drivers/misc/lkdtm/deadlock.c:228:38: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions] 228 | static int lkdtm_waiter_thread(void *) | ^ 3 warnings generated. vim +99 drivers/misc/lkdtm/deadlock.c 97 98 /* Attempting 'folio_lock() A then Mutex B' order */ > 99 static int lkdtm_folio_mutex_kthread(void *) 100 { 101 while (true) { 102 folio_lock(folio_common); 103 mutex_lock(&mutex_b); 104 mutex_unlock(&mutex_b); 105 folio_unlock(folio_common); 106 } 107 108 return 0; 109 } 110 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
