# git rev-parse -q --verify acc48fec3ae30fd2c049c39582e1c4fdf25480ee^{commit} acc48fec3ae30fd2c049c39582e1c4fdf25480ee already have revision, skipping fetch # git checkout -q -f -B kisskb acc48fec3ae30fd2c049c39582e1c4fdf25480ee # git clean -qxdf # < git log -1 # commit acc48fec3ae30fd2c049c39582e1c4fdf25480ee # Author: Ravi Bangoria # Date: Thu Mar 11 14:45:38 2021 +0530 # # powerpc/uprobes: Validation for prefixed instruction # # As per ISA 3.1, prefixed instruction should not cross 64-byte # boundary. So don't allow Uprobe on such prefixed instruction. # # There are two ways probed instruction is changed in mapped pages. # First, when Uprobe is activated, it searches for all the relevant # pages and replace instruction in them. In this case, if that probe # is on the 64-byte unaligned prefixed instruction, error out # directly. Second, when Uprobe is already active and user maps a # relevant page via mmap(), instruction is replaced via mmap() code # path. But because Uprobe is invalid, entire mmap() operation can # not be stopped. In this case just print an error and continue. # # Signed-off-by: Ravi Bangoria # Acked-by: Naveen N. Rao # Acked-by: Sandipan Das # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210311091538.368590-1-ravi.bangoria@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 acc48fec3ae30fd2c049c39582e1c4fdf25480ee # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- pq2fads_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1313:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ INFO: Uncompressed kernel (size 0x715678) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x70510c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) Image Name: Linux-5.12.0-rc2-95082-gacc48fec Created: Fri Mar 12 23:33:58 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3187138 Bytes = 3112.44 KiB = 3.04 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.12.0-rc2-95082-gacc48fec Created: Fri Mar 12 23:33:58 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3219516 Bytes = 3144.06 KiB = 3.07 MiB Load Address: 00800000 Entry Point: 00800894 Completed OK # rm -rf /kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.9 # Build took: 0:00:56.773929