# git rev-parse -q --verify b7a2d47af3a0d58527e3a53ab85f597cd495b7ce^{commit} b7a2d47af3a0d58527e3a53ab85f597cd495b7ce already have revision, skipping fetch # git checkout -q -f -B kisskb b7a2d47af3a0d58527e3a53ab85f597cd495b7ce # git clean -qxdf # < git log -1 # commit b7a2d47af3a0d58527e3a53ab85f597cd495b7ce # Author: Jordan Niethe # Date: Mon Feb 8 14:29:57 2021 +1100 # # selftests/powerpc: Test for spurious kernel memory faults on radix # # Previously when mapping kernel memory on radix, no ptesync was # included which would periodically lead to unhandled spurious faults. # Mapping kernel memory is used when code patching with Strict RWX # enabled. As suggested by Chris Riedl, turning ftrace on and off does a # large amount of code patching so is a convenient way to see this kind # of fault. # # Add a selftest to try and trigger this kind of a spurious fault. It # tests for 30 seconds which is usually long enough for the issue to # show up. # # Signed-off-by: Jordan Niethe # [mpe: Rename it to better reflect what it does, rather than the symptom] # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210208032957.1232102-2-jniethe5@gmail.com # < /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 b7a2d47af3a0d58527e3a53ab85f597cd495b7ce # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc44x_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:16 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057860 Bytes = 2986.19 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601524 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:16 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057944 Bytes = 2986.27 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:16 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057714 Bytes = 2986.05 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057813 Bytes = 2986.15 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 006001b8 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058310 Bytes = 2986.63 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 006000c4 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058281 Bytes = 2986.60 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 0060152c Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057898 Bytes = 2986.23 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601544 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058244 Bytes = 2986.57 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-81082-gb7a2d47a Created: Fri Feb 12 02:41:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058195 Bytes = 2986.52 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601514 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 # Build took: 0:01:00.062173