Messages in this thread | | | Date | Mon, 3 Apr 2017 19:06:31 +0800 | From | Fengguang Wu <> | Subject | Re: [kbuild-all] [PATCH v3 1/3] mfd: intel_soc_pmic: Fix a mess with compilation units |
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On Mon, Apr 03, 2017 at 12:26:54PM +0300, Andy Shevchenko wrote: >On Mon, Apr 3, 2017 at 12:20 PM, Lee Jones <lee.jones@linaro.org> wrote: >> On Sun, 02 Apr 2017, Andy Shevchenko wrote: >> >>> On Sun, Apr 2, 2017 at 11:03 PM, kbuild test robot <lkp@intel.com> wrote: >>> > Hi Andy, >>> > >>> > [auto build test ERROR on ljones-mfd/for-mfd-next] >>> > [also build test ERROR on v4.11-rc4 next-20170331] >>> > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] >>> >>> Thank you for report, though... >>> >>> > >>> > url: https://github.com/0day-ci/linux/commits/Andy-Shevchenko/mfd-intel_soc_pmic-Fix-a-mess-with-compilation-units/20170320-153539 >>> > base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next >>> > config: tile-allyesconfig (attached as .config) >>> > compiler: tilegx-linux-gcc (GCC) 4.6.2 >>> > reproduce: >>> > wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross >>> > chmod +x ~/bin/make.cross >>> > # save the attached .config to linux build tree >>> >>> > make.cross ARCH=tile >>> >>> ...I doubt how below is related to my patch. This is obvious x86 code >>> which was initially submitted without >>> depend on X86 >>> line in corresponding Kconfig. >> >> I think you should probably specify the architecture in the Kconfig >> entry, or else some `randconfig`s will fail. > >Yes, I understand how to fix this, though it's not a problem of this >patch per se. > >Fengguang, is there any possible way to determine the relation between >an error and a root cause change?
Andy, our 0day build error reports are all bisected ones. It means the error happens since the reported patch/commit, which is either responsible for the root cause, or somehow triggers (or changes the exact form of) an old bug.
I just manual confirmed the bisect is correct:
=============== commit 162c61d1a =============== /home/wfg/linux HEAD is now at 162c61d... mfd: intel_soc_pmic: Fix a mess with compilation units /home/wfg/linux/obj-compiletest
make ARCH=tile allyesconfig make ARCH=tile drivers/mfd/
!!! BUILD ERROR !!! make ARCH=tile M=drivers/mfd/
!!! BUILD ERROR !!! grep -a -F drivers/mfd/ /tmp/build-err-162c61d1a76aa5ccfb398225b3f6f2e896fb58b0-wfg --color ../drivers/mfd/intel_soc_pmic_bxtwc.c:24:31: fatal error: asm/intel_pmc_ipc.h: No such file or directory compilation terminated. make[2]: *** [drivers/mfd/intel_soc_pmic_bxtwc.o] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [drivers/mfd/] Error 2 make: *** [sub-make] Error 2 make[2]: *** No rule to make target 'drivers/mfd//intel_soc_pmic_bxtwc.o', needed by 'drivers/mfd//built-in.o'. make[2]: Target '__build' not remade because of errors. make[1]: *** [_module_drivers/mfd/] Error 2 make[1]: Target '_all' not remade because of errors. make: *** [sub-make] Error 2
=============== PREV commit e93c10211d03c35271896b03a40d3eca4a674770 =============== /home/wfg/linux Previous HEAD position was 162c61d... mfd: intel_soc_pmic: Fix a mess with compilation units HEAD is now at e93c102... mfd: lpc_ich: Enable watchdog on Intel Apollo Lake PCH /home/wfg/linux/obj-compiletest
make ARCH=tile allyesconfig make ARCH=tile drivers/mfd/
make ARCH=tile M=drivers/mfd/
grep -a -F drivers/mfd/ /tmp/build-err-e93c10211d03c35271896b03a40d3eca4a674770-wfg --color
Thanks, Fengguang
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