# git rev-parse -q --verify 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b^{commit} 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b already have revision, skipping fetch # git checkout -q -f -B kisskb 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b # git clean -qxdf # < git log -1 # commit 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b # Author: Christophe Leroy # Date: Wed Jan 22 17:52:50 2020 +0000 # # powerpc/32s: Drop NULL addr verification # # NULL addr is a user address. Don't waste time checking it. If # someone tries to access it, it will SIGFAULT the same way as for # address 1, so no need to make it special. # # The special case is when not doing a write, in that case we want # to drop the entire function. This is now handled by 'dir' param # and not by the nulity of 'to' anymore. # # Also make beginning of prevent_user_access() similar # to beginning of allow_user_access(), and tell the compiler # that writing in kernel space or with a 0 length is unlikely # # Signed-off-by: Christophe Leroy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/d79cb9f680f4e971e05262303103a4b94baa91ce.1579715466.git.christophe.leroy@c-s.fr # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 932bba9c9c94d08fe4c8075bf55cafa0a5c16e2b # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_defconfig+FA_DUMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- pseries_defconfig # Added to kconfig CONFIG_CRASH_DUMP=y # Added to kconfig CONFIG_FA_DUMP=y # yes \n | make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_defconfig+FA_DUMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_defconfig+FA_DUMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- WARNING: 2 bad relocations c0000000016f5578 R_PPC64_ADDR64 _binary__btf_vmlinux_bin_start c0000000016f5580 R_PPC64_ADDR64 _binary__btf_vmlinux_bin_end Completed OK # rm -rf /kisskb/build/powerpc-next_pseries_defconfig+FA_DUMP_powerpc-gcc5 # Build took: 0:03:47.498278