Buildresult: chleroy/ps3_defconfig/powerpc-gcc5 built on Feb 14 2022, 22:21

kisskb

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Status:	OK
Date/Time:	Feb 14 2022, 22:21
Duration:	0:01:03.405844
Builder:	ka7
Revision:	lkdtm: Add a test for function descriptors protection (`7efd182a94e167c2cb0187009ae1fffa8c485e97)`
Target:	chleroy/ps3_defconfig/powerpc-gcc5
Branch:	chleroy
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.5.0 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	ps3_defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 7efd182a94e167c2cb0187009ae1fffa8c485e97^{commit} 7efd182a94e167c2cb0187009ae1fffa8c485e97 already have revision, skipping fetch # git checkout -q -f -B kisskb 7efd182a94e167c2cb0187009ae1fffa8c485e97 # git clean -qxdf # < git log -1 # commit 7efd182a94e167c2cb0187009ae1fffa8c485e97 # Author: Christophe Leroy <christophe.leroy@csgroup.eu> # Date: Wed Oct 13 17:09:54 2021 +0200 # # lkdtm: Add a test for function descriptors protection # # Add WRITE_OPD to check that you can't modify function # descriptors. # # Gives the following result when function descriptors are # not protected: # # lkdtm: Performing direct entry WRITE_OPD # lkdtm: attempting bad 16 bytes write at c00000000269b358 # lkdtm: FAIL: survived bad write # lkdtm: do_nothing was hijacked! # # Looks like a standard compiler barrier() is not enough to force # GCC to use the modified function descriptor. Had to add a fake empty # inline assembly to force GCC to reload the function descriptor. # # Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> # Acked-by: Kees Cook <keescook@chromium.org> # < /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 7efd182a94e167c2cb0187009ae1fffa8c485e97 # < make -s -j 32 ARCH=powerpc O=/kisskb/build/chleroy_ps3_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ps3_defconfig # < make -s -j 32 ARCH=powerpc O=/kisskb/build/chleroy_ps3_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 32 ARCH=powerpc O=/kisskb/build/chleroy_ps3_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 32 ARCH=powerpc O=/kisskb/build/chleroy_ps3_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- Completed OK # rm -rf /kisskb/build/chleroy_ps3_defconfig_powerpc-gcc5 # Build took: 0:01:03.405844

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