Hi Steven, Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.1-rc1 next-20221020] [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/Steven-Rostedt/tracing-Add-trace_trigger-kernel-command-line-option/20221020-102230 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20221019200137.70343645%40gandalf.local.home patch subject: [PATCH] tracing: Add trace_trigger kernel command line option config: s390-allmodconfig compiler: s390-linux-gcc (GCC) 12.1.0 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 # https://github.com/intel-lab-lkp/linux/commit/476ab107174fa2ac06ef7171b093235382008c77 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Steven-Rostedt/tracing-Add-trace_trigger-kernel-command-line-option/20221020-102230 git checkout 476ab107174fa2ac06ef7171b093235382008c77 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "early_boot_irqs_disabled" [mm/kasan/kasan_test.ko] undefined! >> ERROR: modpost: "early_boot_irqs_disabled" [mm/kfence/kfence_test.ko] undefined! ERROR: modpost: "devm_ioremap_resource" [drivers/dma/qcom/hdma.ko] undefined! ERROR: modpost: "devm_ioremap_resource" [drivers/dma/fsl-edma.ko] undefined! ERROR: modpost: "devm_ioremap_resource" [drivers/dma/idma64.ko] undefined! ERROR: modpost: "iounmap" [drivers/tty/ipwireless/ipwireless.ko] undefined! ERROR: modpost: "ioremap" [drivers/tty/ipwireless/ipwireless.ko] undefined! ERROR: modpost: "devm_platform_ioremap_resource" [drivers/char/xillybus/xillybus_of.ko] undefined! ERROR: modpost: "devm_memremap" [drivers/misc/open-dice.ko] undefined! ERROR: modpost: "devm_memunmap" [drivers/misc/open-dice.ko] undefined! WARNING: modpost: suppressed 20 unresolved symbol warnings because there were too many) -- 0-DAY CI Kernel Test Service https://01.org/lkp