# git rev-parse -q --verify 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9^{commit} 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9 already have revision, skipping fetch # git checkout -q -f -B kisskb 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9 # git clean -qxdf # < git log -1 # commit 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9 # Author: Ram Pai # Date: Mon Dec 3 12:43:22 2018 -0800 # # powerpc/pkeys: Copy pkey-tracking-information at fork() # # At fork(), the pkey tracking information is not copied over to the # mm_struct of the child. This can cause the child to erroneously # allocate keys that were already allocated. Any allocated execute-only # key is lost as well. # # Add code; called by dup_mmap(), to copy the pkey state from parent to # child explicitly. # # This problem was originally found by Dave Hansen on x86, which turns # out to be a problem on powerpc as well. # # Fixes: cf43d3b26452 ("powerpc: Enable pkey subsystem") # Cc: stable@vger.kernel.org # v4.16+ # Signed-off-by: Ram Pai # Reviewed-by: Thiago Jung Bauermann # [mpe: Return early if pkey_disabled is true] # Signed-off-by: Michael Ellerman # < /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 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc885_ads_defconfig # Added to kconfig CONFIG_HUGETLBFS=y # yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_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 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- Image Name: Linux-4.20.0-rc2-g416b2bfbaccf Created: Fri Dec 21 04:51:10 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1855133 Bytes = 1811.65 KiB = 1.77 MiB Load Address: 00400000 Entry Point: 00400204 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc885_ads_defconfig+HUGETLB_powerpc-gcc5 # Build took: 0:00:37.521645