# 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-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 b7a2d47af3a0d58527e3a53ab85f597cd495b7ce # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_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_mpc85xx_smp_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_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:10:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:12, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xdf7e8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xde7760) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:40 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6783502 Bytes = 6624.51 KiB = 6.47 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:41 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815279 Bytes = 6655.55 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815185 Bytes = 6655.45 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815507 Bytes = 6655.77 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815235 Bytes = 6655.50 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6817743 Bytes = 6657.95 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815488 Bytes = 6655.75 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:43 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815405 Bytes = 6655.67 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6817503 Bytes = 6657.72 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815187 Bytes = 6655.46 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815451 Bytes = 6655.71 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6817709 Bytes = 6657.92 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815637 Bytes = 6655.90 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815404 Bytes = 6655.67 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6816869 Bytes = 6657.10 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.11.0-rc2-gb7a2d47af3a0 Created: Fri Feb 12 04:24:44 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6815243 Bytes = 6655.51 KiB = 6.50 MiB Load Address: 00e00000 Entry Point: 00e00314 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc4.9 # Build took: 0:02:12.940807