tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: 0894ff5eb82865f50565a1186db5970da0aa00dd commit: 5e6fa3cf7bef3bf4d3f0564c7c27022753a43bf2 [19/43] include condition in the BUG_ON/WARN_ON output config: i386-randconfig-s002-20200714 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-41-g14e84ffc-dirty git checkout 5e6fa3cf7bef3bf4d3f0564c7c27022753a43bf2 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/x86/kernel/paravirt.c:205:9: sparse: sparse: too long token expansion -- -- -- -- vim +198 arch/x86/kernel/paravirt.c 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 195 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 196 static inline void enter_lazy(enum paravirt_lazy_mode mode) 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 197 { c6ae41e7d469f0 arch/x86/kernel/paravirt.c Alex Shi 2012-05-11 @198 BUG_ON(this_cpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 199 c6ae41e7d469f0 arch/x86/kernel/paravirt.c Alex Shi 2012-05-11 200 this_cpu_write(paravirt_lazy_mode, mode); 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 201 } 8965c1c0950d45 arch/x86/kernel/paravirt_32.c Jeremy Fitzhardinge 2007-10-16 202 :::::: The code at line 198 was first introduced by commit :::::: c6ae41e7d469f00d9c92a2b2887c7235d121c009 x86: replace percpu_xxx funcs with this_cpu_xxx :::::: TO: Alex Shi <alex.shi(a)intel.com&gt; :::::: CC: Tejun Heo <tj(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org