# git rev-parse -q --verify ea721ec55c8a4a166373978b9c8ce77374d684d6^{commit} ea721ec55c8a4a166373978b9c8ce77374d684d6 already have revision, skipping fetch # git checkout -q -f -B kisskb ea721ec55c8a4a166373978b9c8ce77374d684d6 # git clean -qxdf # < git log -1 # commit ea721ec55c8a4a166373978b9c8ce77374d684d6 # Author: Jordan Niethe # Date: Mon Feb 8 14:29:57 2021 +1100 # # selftests/powerpc: Test for spurious kernel memory faults on radix # # Previously when mapping kernel memory on radix, no ptesync was included # which would periodically lead to unhandled spurious faults. Mapping # kernel memory is used when code patching with Strict RWX enabled. As # suggested by Chris Riedl, turning ftrace on and off does a large amount # of code patching so is a convenient way to see this kind of fault. # # Add a selftest to try and trigger this kind of a spurious fault. It # tests for 30 seconds which is usually long enough for the issue to show # up. # # Signed-off-by: Jordan Niethe # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210208032957.1232102-2-jniethe5@gmail.com # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 ea721ec55c8a4a166373978b9c8ce77374d684d6 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- randconfig KCONFIG_SEED=0xC6F413D8 # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_CPU_BIG_ENDIAN=n # Added to kconfig CONFIG_CPU_LITTLE_ENDIAN=y # Added to kconfig CONFIG_PPC64=y # Added to kconfig CONFIG_PPC_BOOK3E_64=n # Added to kconfig CONFIG_PPC_BOOK3S_64=y # Added to kconfig CONFIG_PPC_DISABLE_WERROR=y # Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y # Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n # Added to kconfig CONFIG_UBSAN=n # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:5803:warning: override: reassigning to symbol MODULE_SIG .config:5804:warning: override: reassigning to symbol CPU_BIG_ENDIAN .config:5807:warning: override: reassigning to symbol PPC_BOOK3E_64 .config:5809:warning: override: reassigning to symbol PPC_DISABLE_WERROR .config:5811:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- Completed OK # rm -rf /kisskb/build/powerpc-next-rand_randconfig+ppc64le_powerpc-gcc9 # Build took: 0:06:38.574027