Hi Dmitry, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.4-rc6] [cannot apply to next-20191108] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Dmitry-Safonov/kallsyms-printk-Add-loglvl-to-print_ip_sym/20191108-124037 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 847120f859cc45e074204f4cf33c8df069306eb2 config: s390-allnoconfig (attached as .config) compiler: s390-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): arch/s390/kernel/dumpstack.c: In function 'show_regs': >> arch/s390/kernel/dumpstack.c:178:3: error: too few arguments to function 'show_stack' show_stack(NULL, (unsigned long *) regs->gprs[15]); ^~~~~~~~~~ arch/s390/kernel/dumpstack.c:126:6: note: declared here void show_stack(struct task_struct *task, unsigned long *stack, ^~~~~~~~~~ vim +/show_stack +178 arch/s390/kernel/dumpstack.c 1bca09f7144450 Heiko Carstens 2013-03-14 171 1bca09f7144450 Heiko Carstens 2013-03-14 172 void show_regs(struct pt_regs *regs) 1bca09f7144450 Heiko Carstens 2013-03-14 173 { a43cb95d547a06 Tejun Heo 2013-04-30 174 show_regs_print_info(KERN_DEFAULT); 1bca09f7144450 Heiko Carstens 2013-03-14 175 show_registers(regs); 1bca09f7144450 Heiko Carstens 2013-03-14 176 /* Show stack backtrace if pt_regs is from kernel mode */ 1bca09f7144450 Heiko Carstens 2013-03-14 177 if (!user_mode(regs)) 2b7b9817c2dbfc Heiko Carstens 2017-06-06 @178 show_stack(NULL, (unsigned long *) regs->gprs[15]); 1bca09f7144450 Heiko Carstens 2013-03-14 179 show_last_breaking_event(regs); 1bca09f7144450 Heiko Carstens 2013-03-14 180 } 1bca09f7144450 Heiko Carstens 2013-03-14 181 :::::: The code at line 178 was first introduced by commit :::::: 2b7b9817c2dbfce0501a313db817718fc5ef6524 s390/dumpstack: remove raw stack dump :::::: TO: Heiko Carstens :::::: CC: Martin Schwidefsky --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation