Successfully identified regression in *glibc* in CI configuration tcwg_cross/gnu-master-aarch64-build_cross. So far, this commit has regressed CI configurations: - tcwg_cross/gnu-master-aarch64-build_cross

Culprit: <cut> commit 7042b53f11339bc286270cd1a48eebf7989d198b Author: Siddhesh Poyarekar siddhesh@sourceware.org Date: Tue Jul 6 23:31:58 2021 +0530

Exclude tst-realloc from tests-mcheck

The realloc (NULL, 0) test in tst-realloc fails with gcc 7.x but passes with newer gcc. This is because a newer gcc transforms the realloc call to malloc (0), thus masking the bug in mcheck.

Disable the test with mcheck for now. The malloc removal patchset will fix this and then remove this test from the exclusion list.

Reported-by: Stefan Liebler stli@linux.ibm.com Reviewed-by: Carlos O'Donell carlos@redhat.com </cut>

Results regressed to (for first_bad == 7042b53f11339bc286270cd1a48eebf7989d198b) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe stage1: 2 # build_abe linux: 3 # First few build errors in logs: # 00:00:17 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/sysd-rules:483: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/crti.o] Error 1 # 00:00:17 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/sysd-rules:483: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/crtn.o] Error 1 # 00:00:17 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/sysd-rules:483: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/start.o] Error 1 # 00:00:17 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/sysd-rules:499: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/start.os] Error 1 # 00:00:17 make[2]: *** [../o-iterator.mk:9: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/check_fds.os] Error 1 # 00:00:17 make[2]: *** [../o-iterator.mk:9: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/check_fds.o] Error 1 # 00:00:18 ../sysdeps/aarch64/nptl/tls.h:91:19: error: ‘__builtin_thread_pointer’ is not supported on this target # 00:00:18 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/sysd-rules:485: /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux-gnu/aarch64-linux-gnu/glibc-glibc.git~master/csu/libc-tls.o] Error 1 # 00:00:18 ../sysdeps/unix/sysv/linux/aarch64/sysdep.h:190:17: error: invalid register name for ‘_x0’ # 00:00:18 ../sysdeps/unix/sysv/linux/aarch64/sysdep.h:174:22: error: invalid register name for ‘_x8’

from (for last_good == cf2256196cc843b574e39eb05b77fc0c00024aa1) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe stage1: 2 # build_abe linux: 3 # build_abe glibc: 4 # build_abe stage2: 5 # build_abe qemu: 6

Artifacts of last_good build: https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... Build top page/logs: https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2...

Configuration details:

Reproduce builds: <cut> mkdir investigate-glibc-7042b53f11339bc286270cd1a48eebf7989d198b cd investigate-glibc-7042b53f11339bc286270cd1a48eebf7989d198b

git clone https://git.linaro.org/toolchain/jenkins-scripts

mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... --fail chmod +x artifacts/test.sh

# Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh

cd glibc

# Reproduce first_bad build git checkout --detach 7042b53f11339bc286270cd1a48eebf7989d198b ../artifacts/test.sh

# Reproduce last_good build git checkout --detach cf2256196cc843b574e39eb05b77fc0c00024aa1 ../artifacts/test.sh

cd .. </cut>

History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/c...

Artifacts: https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2... Build log: https://ci.linaro.org/job/tcwg_cross-bisect-gnu-master-aarch64-build_cross/2...

Full commit (up to 1000 lines): <cut> commit 7042b53f11339bc286270cd1a48eebf7989d198b Author: Siddhesh Poyarekar siddhesh@sourceware.org Date: Tue Jul 6 23:31:58 2021 +0530

Exclude tst-realloc from tests-mcheck

The realloc (NULL, 0) test in tst-realloc fails with gcc 7.x but passes with newer gcc. This is because a newer gcc transforms the realloc call to malloc (0), thus masking the bug in mcheck.

Disable the test with mcheck for now. The malloc removal patchset will fix this and then remove this test from the exclusion list.

Reported-by: Stefan Liebler stli@linux.ibm.com Reviewed-by: Carlos O'Donell carlos@redhat.com --- malloc/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/malloc/Makefile b/malloc/Makefile index 2f9b3d596d..2af1203a0a 100644 --- a/malloc/Makefile +++ b/malloc/Makefile @@ -93,7 +93,8 @@ tests-exclude-mcheck = tst-mallocstate \ tst-malloc-usable-tunables \ tst-malloc_info \ tst-memalign \ - tst-posix_memalign + tst-posix_memalign \ + tst-posix-realloc

tests-mcheck = $(filter-out $(tests-exclude-mcheck), $(tests))

</cut>