Hi Madhavan, [auto build test ERROR on powerpc/next] [also build test ERROR on v4.9-rc5 next-20161114] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Madhavan-Srinivasan/powerpc-perf-factor-out-the-event-format-field/20161115-041335 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-pasemi_defconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings Note: the linux-review/Madhavan-Srinivasan/powerpc-perf-factor-out-the-event-format-field/20161115-041335 HEAD 51c82e12f03b6f83703ad810dfa72a7bf2205983 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): arch/powerpc/perf/power9-pmu.c: In function 'init_power9_pmu': >> arch/powerpc/perf/power9-pmu.c:294:5: error: 'rc' may be used uninitialized >> in this function [-Werror=maybe-uninitialized] if (rc) ^ cc1: all warnings being treated as errors vim +/rc +294 arch/powerpc/perf/power9-pmu.c 8c002dbd Madhavan Srinivasan 2016-06-26 288 return -ENODEV; 8c002dbd Madhavan Srinivasan 2016-06-26 289 4a3d1bb1 Madhavan Srinivasan 2016-11-14 290 if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { 4a3d1bb1 Madhavan Srinivasan 2016-11-14 291 rc = register_power_pmu(&power9_isa207_pmu); 4a3d1bb1 Madhavan Srinivasan 2016-11-14 292 } 4a3d1bb1 Madhavan Srinivasan 2016-11-14 293 8c002dbd Madhavan Srinivasan 2016-06-26 @294 if (rc) 8c002dbd Madhavan Srinivasan 2016-06-26 295 return rc; 8c002dbd Madhavan Srinivasan 2016-06-26 296 8c002dbd Madhavan Srinivasan 2016-06-26 297 /* Tell userspace that EBB is supported */ :::::: The code at line 294 was first introduced by commit :::::: 8c002dbd05eecbb2933e9668da9614b33c7a97d2 powerpc/perf: Power9 PMU support :::::: TO: Madhavan Srinivasan <ma...@linux.vnet.ibm.com> :::::: CC: Michael Ellerman <m...@ellerman.id.au> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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