tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 115a54162a6c0d0ef2aef25ebd0b61fc5e179ebe commit: 598a90f2002c4c4daee24d76d24e8270c7075eef scsi: qla2xxx: add ring buffer for tracing debug logs date: 2 months ago config: arc-randconfig-r032-20200520 (attached as .config) compiler: arc-elf-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=arc 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/linux/kernel.h:11, from drivers/scsi/qla2xxx/qla_def.h:10, from drivers/scsi/qla2xxx/qla_dbg.c:73: include/trace/events/qla.h: In function 'trace_event_raw_event_qla_log_event': 61 | static struct ftrace_branch_data | ^~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:69: note: in expansion of macro '__trace_if_value' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~~~~~~~~~~~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ include/trace/trace_events.h:702:2: note: in expansion of macro 'if' 702 | if (!entry) | ^~ include/trace/events/qla.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' 12 | DECLARE_EVENT_CLASS(qla_log_event, | ^~~~~~~~~~~~~~~~~~~ vim +61 include/linux/compiler.h a15fd609ad53a6 Linus Torvalds 2019-03-20 59 a15fd609ad53a6 Linus Torvalds 2019-03-20 60 #define __trace_if_value(cond) ({ \ 2bcd521a684cc9 Steven Rostedt 2008-11-21 @61 static struct ftrace_branch_data \ e04462fb82f8dd Miguel Ojeda 2018-09-03 62 __aligned(4) \ bfafddd8de426d Nick Desaulniers 2019-08-28 63 __section(_ftrace_branch) \ a15fd609ad53a6 Linus Torvalds 2019-03-20 64 __if_trace = { \ 2bcd521a684cc9 Steven Rostedt 2008-11-21 65 .func = __func__, \ 2bcd521a684cc9 Steven Rostedt 2008-11-21 66 .file = __FILE__, \ 2bcd521a684cc9 Steven Rostedt 2008-11-21 67 .line = __LINE__, \ 2bcd521a684cc9 Steven Rostedt 2008-11-21 68 }; \ a15fd609ad53a6 Linus Torvalds 2019-03-20 69 (cond) ? \ a15fd609ad53a6 Linus Torvalds 2019-03-20 70 (__if_trace.miss_hit[1]++,1) : \ a15fd609ad53a6 Linus Torvalds 2019-03-20 71 (__if_trace.miss_hit[0]++,0); \ a15fd609ad53a6 Linus Torvalds 2019-03-20 72 }) a15fd609ad53a6 Linus Torvalds 2019-03-20 73 :::::: The code at line 61 was first introduced by commit :::::: 2bcd521a684cc94befbe2ce7d5b613c841b0d304 trace: profile all if conditionals :::::: TO: Steven Rostedt <srostedt(a)redhat.com&gt; :::::: CC: Ingo Molnar <mingo(a)elte.hu&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org