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 f7de21498dc6c517969315dcb3a675072c2cc87f Author: Adhemerval Zanella adhemerval.zanella@linaro.org Date: Sat Jul 3 16:26:11 2021 -0300

linux: Use the expected size for SO_TIMESTAMP{NS} convertion

Kernel returns 32-bit values for COMPAT_SO_TIMESTAMP{NS}_OLD, not 64-bit values.

Checked on x86_64-linux-gnu and i686-linux-gnu. </cut>

Results regressed to (for first_bad == f7de21498dc6c517969315dcb3a675072c2cc87f) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe stage1: 2 # build_abe linux: 3 # First few build errors in logs: # 00:00:14 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 # 00:00:14 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 # 00:00:14 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 # 00:00:14 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 # 00:00:15 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 # 00:00:15 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 # 00:00:15 ../sysdeps/aarch64/nptl/tls.h:91:19: error: ‘__builtin_thread_pointer’ is not supported on this target # 00:00:15 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 # 00:00:15 ../sysdeps/unix/sysv/linux/aarch64/sysdep.h:190:17: error: invalid register name for ‘_x0’ # 00:00:15 ../sysdeps/unix/sysv/linux/aarch64/sysdep.h:174:22: error: invalid register name for ‘_x8’

from (for last_good == 4b93a93e407308000ee6a1c3fec3715127c2c4c5) # 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-f7de21498dc6c517969315dcb3a675072c2cc87f cd investigate-glibc-f7de21498dc6c517969315dcb3a675072c2cc87f

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 f7de21498dc6c517969315dcb3a675072c2cc87f ../artifacts/test.sh

# Reproduce last_good build git checkout --detach 4b93a93e407308000ee6a1c3fec3715127c2c4c5 ../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 f7de21498dc6c517969315dcb3a675072c2cc87f Author: Adhemerval Zanella adhemerval.zanella@linaro.org Date: Sat Jul 3 16:26:11 2021 -0300

linux: Use the expected size for SO_TIMESTAMP{NS} convertion

Kernel returns 32-bit values for COMPAT_SO_TIMESTAMP{NS}_OLD, not 64-bit values.

Checked on x86_64-linux-gnu and i686-linux-gnu. --- sysdeps/unix/sysv/linux/convert_scm_timestamps.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/convert_scm_timestamps.c b/sysdeps/unix/sysv/linux/convert_scm_timestamps.c index 5af71847f5..00c934c413 100644 --- a/sysdeps/unix/sysv/linux/convert_scm_timestamps.c +++ b/sysdeps/unix/sysv/linux/convert_scm_timestamps.c @@ -44,7 +44,8 @@ __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize) 'struct __kernel_sock_timeval' while for SO_TIMESTAMPNS_NEW is a 'struct __kernel_timespec'. In either case it is two uint64_t members. */ - uint64_t tvts[2]; + int64_t tvts[2]; + int32_t tmp[2];

struct cmsghdr *cmsg, *last = NULL; int type = 0; @@ -69,7 +70,9 @@ __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize)

/* fallthrough */ common: - memcpy (tvts, CMSG_DATA (cmsg), sizeof (tvts)); + memcpy (tmp, CMSG_DATA (cmsg), sizeof (tmp)); + tvts[0] = tmp[0]; + tvts[1] = tmp[1]; break; }

</cut>