The selftests x86_64 builds failed due to following build warnings / errors
on the Linux next-20251020 and next-20251021 tags with gcc-14 and clang-21.
First seen on next-20251020
Good: next-20251020
Bad: next-20251017
Regression Analysis:
- New regression? yes
- Reproducibility? yes
### Build errors
x86_64-linux-gnu-gcc -m64 -o kselftest/x86/single_step_syscall_64 -O2
-g -std=gnu99 -pthread -Wall -isystem usr/include -no-pie
-DCAN_BUILD_64 single_step_syscall.c -lrt -ldl
In file included from single_step_syscall.c:34:
helpers.h:10:10: fatal error: kselftest.h: No such file or directory
10 | #include "kselftest.h"
| ^~~~~~~~~~~~~
compilation terminated.
make[4]: *** [Makefile:86: kselftest/x86/single_step_syscall_64] Error 1
### Suspected patch
git log --oneline next-20251017..next-20251020 --
tools/testing/selftests/x86/
4d89827dfb274 selftests: complete kselftest include centralization
Build regressions: next-20251020: selftests: helpers.h:10:10: fatal
error: kselftest.h: No such file or directory
Reported-by: Linux Kernel Functional Testing <[email protected]>
### Steps to reproduce
- tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-14 \
--kconfig
https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjqzIhgWbQ/config
\
debugkernel cpupower headers kernel kselftest modules
## Source
* Kernel version: 6.18.0-rc2
* Git tree:
https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git describe: next-20251021 and next-20251020
* Git commit: fe45352cd106ae41b5ad3f0066c2e54dbb2dfd70
* Architectures: x86_64
* Toolchains: gcc-14 and clang-21
* Kconfigs: defconfig+selftests/*/configs
## Build
* Build log:
https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjqzIhgWbQ/build.log
* Build details:
https://regressions.linaro.org/lkft/linux-next-master/next-20251020/kselftest-x86/x86_avx_64/
* Build link:
https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjqzIhgWbQ/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjqzIhgWbQ/config
--
Linaro LKFT
https://lkft.linaro.org
