On Wed, Nov 24, 2021 at 06:52:40PM +0530, Naresh Kamboju wrote: > Regression found on s390 gcc-11 builds with defconfig > Following build warnings / errors reported on stable-rc 4.19. > > metadata: > git_describe: v4.19.217-324-g451ddd7eb93b > git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc > git_short_log: 451ddd7eb93b (\"Linux 4.19.218-rc1\") > target_arch: s390 > toolchain: gcc-11 / gcc-10 / gcc-9 / gcc-8 > > build error : > -------------- > make --silent --keep-going --jobs=8 > O=/home/tuxbuild/.cache/tuxmake/builds/current ARCH=s390 > CROSS_COMPILE=s390x-linux-gnu- 'CC=sccache s390x-linux-gnu-gcc' > 'HOSTCC=sccache gcc' > arch/s390/kernel/setup.c: In function 'setup_lowcore_dat_off': > arch/s390/kernel/setup.c:342:9: warning: 'memcpy' reading 128 bytes > from a region of size 0 [-Wstringop-overread] > 342 | memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 343 | sizeof(lc->stfle_fac_list)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/s390/kernel/setup.c:344:9: warning: 'memcpy' reading 128 bytes > from a region of size 0 [-Wstringop-overread] > 344 | memcpy(lc->alt_stfle_fac_list, S390_lowcore.alt_stfle_fac_list, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 345 | sizeof(lc->alt_stfle_fac_list)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/s390/kvm/kvm-s390.c: In function 'kvm_s390_get_machine': > arch/s390/kvm/kvm-s390.c:1302:9: warning: 'memcpy' reading 128 bytes > from a region of size 0 [-Wstringop-overread] > 1302 | memcpy((unsigned long *)&mach->fac_list, > S390_lowcore.stfle_fac_list, > | > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 1303 | sizeof(S390_lowcore.stfle_fac_list)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from arch/s390/kernel/lgr.c:13: > In function 'stfle', > inlined from 'lgr_info_get' at arch/s390/kernel/lgr.c:122:2: > arch/s390/include/asm/facility.h:88:9: warning: 'memcpy' reading 4 > bytes from a region of size 0 [-Wstringop-overread] > 88 | memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In function 'pcpu_prepare_secondary', > inlined from '__cpu_up' at arch/s390/kernel/smp.c:878:2: > arch/s390/kernel/smp.c:271:9: warning: 'memcpy' reading 128 bytes from > a region of size 0 [-Wstringop-overread] > 271 | memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 272 | sizeof(lc->stfle_fac_list)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/s390/kernel/smp.c:273:9: warning: 'memcpy' reading 128 bytes from > a region of size 0 [-Wstringop-overread] > 273 | memcpy(lc->alt_stfle_fac_list, S390_lowcore.alt_stfle_fac_list, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 274 | sizeof(lc->alt_stfle_fac_list)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > mm/hugetlb.c: In function '__unmap_hugepage_range': > mm/hugetlb.c:3455:25: error: implicit declaration of function > 'tlb_flush_pmd_range'; did you mean 'tlb_flush_mmu_free'? > [-Werror=implicit-function-declaration] > 3455 | tlb_flush_pmd_range(tlb, address & > PUD_MASK, PUD_SIZE); > | ^~~~~~~~~~~~~~~~~~~ > | tlb_flush_mmu_free > cc1: some warnings being treated as errors > > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > build link: > ----------- > https://builds.tuxbuild.com/21MfFQQKrxPYUW7b8amBJjt3Ki7/build.log > > build config: > ------------- > https://builds.tuxbuild.com/21MfFQQKrxPYUW7b8amBJjt3Ki7/config > > # To install tuxmake on your system globally > # sudo pip3 install -U tuxmake > tuxmake --runtime podman --target-arch s390 --toolchain gcc-11 > --kconfig defconfig Thanks, should now be fixed. greg k-h
