Buildresult: chleroy/arm64-defconfig/arm64-gcc5 built on Feb 14 2022, 23:11

kisskb

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Status:	OK
Date/Time:	Feb 14 2022, 23:11
Duration:	0:06:05.988643
Builder:	ka2
Revision:	lkdtm: Add a test for function descriptors protection (`7efd182a94e167c2cb0187009ae1fffa8c485e97)`
Target:	chleroy/arm64-defconfig/arm64-gcc5
Branch:	chleroy
Compiler:	arm64-gcc5 (aarch64-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 5.4.0 / GNU ld (GNU Binutils) 2.25.1)
Config:	defconfig (download)
Log:	Download original Possible warnings (2) warning: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum warning: LSE atomics not supported by binutils 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/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 7efd182a94e167c2cb0187009ae1fffa8c485e97 # < make -s -j 48 ARCH=arm64 O=/kisskb/build/chleroy_arm64-defconfig_arm64-gcc5.4 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/chleroy_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- help # make -s -j 48 ARCH=arm64 O=/kisskb/build/chleroy_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- olddefconfig # make -s -j 48 ARCH=arm64 O=/kisskb/build/chleroy_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- warning: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum warning: LSE atomics not supported by binutils Completed OK # rm -rf /kisskb/build/chleroy_arm64-defconfig_arm64-gcc5.4 # Build took: 0:06:05.988643

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