# git rev-parse -q --verify 86be334f0b8127a5ca13443ba2f14858cd077ba3^{commit} 86be334f0b8127a5ca13443ba2f14858cd077ba3 already have revision, skipping fetch # git checkout -q -f -B kisskb 86be334f0b8127a5ca13443ba2f14858cd077ba3 # git clean -qxdf # < git log -1 # commit 86be334f0b8127a5ca13443ba2f14858cd077ba3 # Author: Christophe Leroy # Date: Sun Feb 9 18:14:42 2020 +0000 # # powerpc/8xx: Fix clearing of bits 20-23 in ITLB miss # # In ITLB miss handled the line supposed to clear bits 20-23 on the L2 # ITLB entry is buggy and does indeed nothing, leading to undefined # value which could allow execution when it shouldn't. # # Properly do the clearing with the relevant instruction. # # Fixes: 74fabcadfd43 ("powerpc/8xx: don't use r12/SPRN_SPRG_SCRATCH2 in TLB Miss handlers") # Cc: stable@vger.kernel.org # v5.0+ # Signed-off-by: Christophe Leroy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/4f70c2778163affce8508a210f65d140e84524b4.1581272050.git.christophe.leroy@c-s.fr # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-ld --version # < git log --format=%s --max-count=1 86be334f0b8127a5ca13443ba2f14858cd077ba3 # < make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux- defconfig # make -s -j 24 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux- /kisskb/src/kernel/bpf/bpf_struct_ops.c: In function 'bpf_struct_ops_init': /kisskb/src/kernel/bpf/bpf_struct_ops.c:197:1: warning: the frame size of 1208 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ Completed OK # rm -rf /kisskb/build/powerpc-fixes_s390-defconfig_s390x-gcc8 # Build took: 0:05:28.714980