# git rev-parse -q --verify ea721ec55c8a4a166373978b9c8ce77374d684d6^{commit} ea721ec55c8a4a166373978b9c8ce77374d684d6 already have revision, skipping fetch # git checkout -q -f -B kisskb ea721ec55c8a4a166373978b9c8ce77374d684d6 # git clean -qxdf # < git log -1 # commit ea721ec55c8a4a166373978b9c8ce77374d684d6 # 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 # 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 ea721ec55c8a4a166373978b9c8ce77374d684d6 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc83xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc83xx_defconfig # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc83xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc83xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc83xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7e49b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x7d43a8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3580453 Bytes = 3496.54 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:17 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3580572 Bytes = 3496.65 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:18 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3551868 Bytes = 3468.62 KiB = 3.39 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:18 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3580502 Bytes = 3496.58 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:18 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3580358 Bytes = 3496.44 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:18 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3580340 Bytes = 3496.43 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.11.0-rc2-gea721ec55c8a Created: Thu Feb 11 02:08:18 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3579542 Bytes = 3495.65 KiB = 3.41 MiB Load Address: 00800000 Entry Point: 00800294 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc83xx_defconfig_powerpc-gcc5 # Build took: 0:00:37.031952