The x86_64 and i386 build failed with defconfig with gcc-8 toolchain due to following build warnings / errors on the Torvalds Linux master branch. But gcc-13 builds pass.
First seen on v6.13-9485-g72deda0abee6 on Jan. 27, 2025 Good: v6.13-7644-gc2da8b3f914f on Jan. 27, 2025 Bad: v6.13-8265-g9c5968db9e62 on Jan. 27, 2025
i386: build: * gcc-8-i386_defconfig
x86_64: build: * gcc-8-x86_64_defconfig
Reported-by: Linux Kernel Functional Testing
Build log: --- make --silent --keep-going --jobs=8 O=/home/tuxbuild/.cache/tuxmake/builds/1/build ARCH=x86_64 SRCARCH=x86 CROSS_COMPILE=x86_64-linux-gnu- 'CC=sccache x86_64-linux-gnu-gcc' 'HOSTCC=sccache gcc' In file included from <command-line>: In function 'intel_dp_dsc_compute_pipe_bpp_limits.isra.80', inlined from 'intel_dp_compute_config_limits' at drivers/gpu/drm/i915/display/intel_dp.c:2547:3: include/linux/compiler_types.h:542:38: error: call to '__compiletime_assert_909' declared with attribute error: clamp() low limit dsc_min_bpc * 3 greater than high limit dsc_max_bpc * 3 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:523:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler_types.h:542:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/minmax.h:188:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \ ^~~~~~~~~~~~~~~~ include/linux/minmax.h:195:2: note: in expansion of macro '__clamp_once' __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_)) ^~~~~~~~~~~~ include/linux/minmax.h:206:28: note: in expansion of macro '__careful_clamp' #define clamp(val, lo, hi) __careful_clamp(__auto_type, val, lo, hi) ^~~~~~~~~~~~~~~ drivers/gpu/drm/i915/display/intel_dp.c:2506:25: note: in expansion of macro 'clamp' limits->pipe.max_bpp = clamp(limits->pipe.max_bpp, dsc_min_bpc * 3, dsc_max_bpc * 3); ^~~~~ make[7]: *** [scripts/Makefile.build:194: drivers/gpu/drm/i915/display/intel_dp.o] Error 1
Links: --- build log: https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.13-9485-g7... details: https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.13-9485-g7... history: https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.13-9485-g7...
Steps to reproduce: ------------ $ tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-8 --kconfig x86_64_defconfig
metadata: --- git describe: v6.13-9485-g72deda0abee6 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git sha: 72deda0abee6e705ae71a93f69f55e33be5bca5c kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2sKEcVft7ytiSSvOSnAuA... build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2sKEcVft7ytiSSvOSnAuA... toolchain: gcc8 config: gcc-8-defconfig arch: i386 and x86_64
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