tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 642b151f45dd54809ea00ecd3976a56c1ec9b53d commit: 598a90f2002c4c4daee24d76d24e8270c7075eef scsi: qla2xxx: add ring buffer for tracing debug logs date: 10 weeks ago config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 598a90f2002c4c4daee24d76d24e8270c7075eef # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/trace/define_trace.h:102, from include/trace/events/qla.h:39, from drivers/scsi/qla2xxx/qla_dbg.c:77: include/trace/events/qla.h: In function 'trace_event_raw_event_qla_log_event': include/trace/trace_events.h:691:9: warning: function 'trace_event_raw_event_qla_log_event' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 691 | struct trace_event_raw_##call *entry; | ^~~~~~~~~~~~~~~~ include/trace/events/qla.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' 12 | DECLARE_EVENT_CLASS(qla_log_event, | ^~~~~~~~~~~~~~~~~~~ In file included from include/linux/compiler_types.h:68, from <command-line>: include/trace/events/qla.h: In function 'perf_trace_qla_log_event': 191 | #define S390_lowcore (*((struct lowcore *) 0)) | ^~~~~~~ include/linux/compiler-gcc.h:58:26: note: in definition of macro 'RELOC_HIDE' 58 | (typeof(ptr)) (__ptr + (off)); | ^~~ 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~~ 12 | #define __my_cpu_offset S390_lowcore.percpu_offset | ^~~~~~~~~~~~ 44 | #define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) | ^~~~~~~~~~~~~~~ 242 | arch_raw_cpu_ptr(ptr); | ^~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:252:27: note: in expansion of macro 'raw_cpu_ptr' 252 | #define this_cpu_ptr(ptr) raw_cpu_ptr(ptr) | ^~~~~~~~~~~ 48 | head = this_cpu_ptr(event_call->perf_events); | ^~~~~~~~~~~~ include/trace/events/qla.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' 12 | DECLARE_EVENT_CLASS(qla_log_event, | ^~~~~~~~~~~~~~~~~~~ vim +191 arch/s390/include/asm/lowcore.h cbb870c8221147 Heiko Carstens 2010-02-26 190 c667aeacc16e0d Heiko Carstens 2015-12-31 @191 #define S390_lowcore (*((struct lowcore *) 0)) cbb870c8221147 Heiko Carstens 2010-02-26 192 :::::: The code at line 191 was first introduced by commit :::::: c667aeacc16e0de9e205faa93f57121d6f691973 s390: rename struct _lowcore to struct lowcore :::::: TO: Heiko Carstens <heiko.carstens(a)de.ibm.com&gt; :::::: CC: Martin Schwidefsky <schwidefsky(a)de.ibm.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org