# git rev-parse -q --verify 8659a0e0efdd975c73355dbc033f79ba3b31e82c^{commit} 8659a0e0efdd975c73355dbc033f79ba3b31e82c already have revision, skipping fetch # git checkout -q -f -B kisskb 8659a0e0efdd975c73355dbc033f79ba3b31e82c # git clean -qxdf # < git log -1 # commit 8659a0e0efdd975c73355dbc033f79ba3b31e82c # Author: Michael Ellerman # Date: Wed May 20 23:36:05 2020 +1000 # # powerpc/64s: Disable STRICT_KERNEL_RWX # # Several strange crashes have been eventually traced back to # STRICT_KERNEL_RWX and its interaction with code patching. # # Various paths in our ftrace, kprobes and other patching code need to # be hardened against patching failures, otherwise we can end up running # with partially/incorrectly patched ftrace paths, kprobes or jump # labels, which can then cause strange crashes. # # Although fixes for those are in development, they're not -rc material. # # There also seem to be problems with the underlying strict RWX logic, # which needs further debugging. # # So for now disable STRICT_KERNEL_RWX on 64-bit to prevent people from # enabling the option and tripping over the bugs. # # Fixes: 1e0fc9d1eb2b ("powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs") # Cc: stable@vger.kernel.org # v4.13+ # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20200520133605.972649-1-mpe@ellerman.id.au # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 8659a0e0efdd975c73355dbc033f79ba3b31e82c # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_defconfig # Added to kconfig CONFIG_PPC_E500MC=y # Added to kconfig CONFIG_VIRTUALIZATION=y # Added to kconfig CONFIG_KVM_E500MC=y # Added to kconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:4097:warning: override: reassigning to symbol PPC_E500MC .config:4098:warning: override: reassigning to symbol VIRTUALIZATION # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:11, 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] 22 | #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' 78 | # 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' 139 | if (IS_ERR_VALUE(fep->ring_mem_addr)) | ^~~~~~~~~~~~ /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) /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) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe788f8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe680f4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787136 Bytes = 6628.06 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f0031c Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6785354 Bytes = 6626.32 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f0031c Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6786270 Bytes = 6627.22 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f0031c Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787235 Bytes = 6628.16 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6785352 Bytes = 6626.32 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f0031c Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:41 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6789030 Bytes = 6629.91 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6788808 Bytes = 6629.70 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787290 Bytes = 6628.21 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f0031c Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6751938 Bytes = 6593.69 KiB = 6.44 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6788753 Bytes = 6629.64 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787235 Bytes = 6628.16 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:42 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787536 Bytes = 6628.45 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6788593 Bytes = 6629.49 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6787222 Bytes = 6628.15 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6785285 Bytes = 6626.25 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Image Name: Linux-5.7.0-rc2-g8659a0e0efdd Created: Fri May 22 12:48:43 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6785307 Bytes = 6626.28 KiB = 6.47 MiB Load Address: 00f00000 Entry Point: 00f002cc Completed OK # rm -rf /kisskb/build/powerpc-fixes_mpc85xx_defconfig+KVM_powerpc-gcc9 # Build took: 0:03:06.221615