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
--
Linaro LKFT
https://lkft.linaro.org
