On Tue, May 14, 2024 at 11:00:50AM -0700, srinivas pandruvada wrote: > On Tue, 2024-05-14 at 14:05 +0800, kernel test robot wrote: > > tree: > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git m > > aster > > head: 6ba6c795dc73c22ce2c86006f17c4aa802db2a60 > > commit: 9d1d36268f3d8276aefd1fad4e0a415dc8c36edd [8353/12793] > > platform/x86: ISST: Support partitioned systems > > config: x86_64-randconfig-101-20240514 > > (https://download.01.org/0day-ci/archive/20240514/202405141321.RQmski > > Tj-lkp@xxxxxxxxx/config) > > compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 [...] > > reproduce (this is a W=1 build): > > (https://download.01.org/0day-ci/archive/20240514/202405141321.RQmski > > Tj-lkp@xxxxxxxxx/reproduce) > > > > If you fix the issue in a separate patch/commit (i.e. not just a new > > version of > > the same patch/commit), kindly add following tags > > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > Closes: > > > https://lore.kernel.org/oe-kbuild-all/202405141321.RQmskiTj-lkp@xxxxxxxxx/ > > > > All warnings (new ones prefixed by >>): > > > > > > drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.o: > > > > warning: objtool: map_partition_power_domain_id() falls through > > > > to next function get_instance() > > > > Not able to reproduce on two gcc versions on Fedora and Ubuntu > distribution. > gcc --version > gcc (GCC) 13.2.1 20240316 (Red Hat 13.2.1-7) > > gcc --version > gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0 We tried various versions of gcc on Ubuntu distribution and found that only "gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0" can reproduce it, while other newer versions cannot, so this may be a gcc-7 bug. Please ignore it and we will configure the bot to skip this particular "function falls through" warning for gcc-7. Thanks, Yujie > > > The documentation for this error: > https://elixir.bootlin.com/linux/latest/source/tools/objtool/Documentation/objtool.txt > > " > 8. file.o: warning: objtool: funcA() falls through to next function > funcB() > > This means that funcA() doesn't end with a return instruction or an > unconditional jump, and that objtool has determined that the function > can fall through into the next function. > > " > > This function ends with " return -EINVAL;" > > Also the three reasons in the documentation is also not met. > > > > make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash > make[1]: Entering directory '/home/spandruv/development/linux- > next/build_dir' > GEN Makefile > CALL ../scripts/checksyscalls.sh > DESCEND objtool > INSTALL libsubcmd_headers > DESCEND bpf/resolve_btfids > INSTALL libsubcmd_headers > CHK kernel/kheaders_data.tar.xz > CC [M] drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.o > MODPOST Module.symvers > ... > > TEST posttest > arch/x86/tools/insn_decoder_test: success: Decoded and checked 8715543 > instructions > TEST posttest > arch/x86/tools/insn_sanity: Success: decoded and checked 1000000 random > instructions with 0 errors (seed:0x5e80fa20) > Kernel: arch/x86/boot/bzImage is ready (#1) > LD [M] drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.ko > BTF [M] drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.ko > .. > make[1]: Leaving directory '/home/spandruv/development/linux- > next/build_dir' > > > Thanks, > Srinivas > >
