# 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/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version # < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version # < git log --format=%s --max-count=1 416b2bfbaccf8fd50c8e77778bd47f95f12f13d9 # < make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- defconfig # make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum arch/arm64/Makefile:40: LSE atomics not supported by binutils Completed OK # rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64 # Build took: 0:03:32.814507