tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/wip head: 583d7628d9cd70c1a64ec044d9d9922cfb70023b commit: b291ac3eff40ae4b869c9d1902acc0af3190176c [10/11] lockdep: Only trace IRQ edges config: parisc-randconfig-s032-20200820 (attached as .config) compiler: hppa-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 # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty git checkout b291ac3eff40ae4b869c9d1902acc0af3190176c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=parisc 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 >>) kernel/trace/ring_buffer.c:923:32: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@ kernel/trace/ring_buffer.c:923:32: sparse: expected restricted __poll_t kernel/trace/ring_buffer.c:923:32: sparse: got int kernel/trace/ring_buffer.c: note: in included file (through include/linux/irqflags.h, include/asm-generic/cmpxchg-local.h, arch/parisc/include/asm/cmpxchg.h, ...): # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue locking/wip git checkout b291ac3eff40ae4b869c9d1902acc0af3190176c vim +/ring_buffer_peek +37 arch/parisc/include/asm/irqflags.h df9ee29270c11db David Howells 2010-10-07 36 df9ee29270c11db David Howells 2010-10-07 @37 static inline bool arch_irqs_disabled_flags(unsigned long flags) df9ee29270c11db David Howells 2010-10-07 38 { df9ee29270c11db David Howells 2010-10-07 39 return (flags & PSW_I) == 0; df9ee29270c11db David Howells 2010-10-07 40 } df9ee29270c11db David Howells 2010-10-07 41 :::::: The code at line 37 was first introduced by commit :::::: df9ee29270c11dba7d0fe0b83ce47a4d8e8d2101 Fix IRQ flag handling naming :::::: TO: David Howells <dhowells(a)redhat.com&gt; :::::: CC: David Howells <dhowells(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org