# git rev-parse -q --verify d04cb29a7ef9e90cb0e4f16953f2d7484a9a48fb^{commit} d04cb29a7ef9e90cb0e4f16953f2d7484a9a48fb already have revision, skipping fetch # git checkout -q -f -B kisskb d04cb29a7ef9e90cb0e4f16953f2d7484a9a48fb # git clean -qxdf # < git log -1 # commit d04cb29a7ef9e90cb0e4f16953f2d7484a9a48fb # Author: Andrew Donnellan # Date: Tue Dec 10 00:22:21 2019 +1100 # # powerpc: Fix __clear_user() with KUAP enabled # # The KUAP implementation adds calls in clear_user() to enable and disable # access to userspace memory. However, it doesn't add these to # __clear_user(), which is used in the ptrace regset code. # # As there's only one direct user of __clear_user(), and the time taken to # set the AMR for KUAP purposes is going to dominate the cost of a quick # access_ok(), there's not much point having a separate path. # # Rename __clear_user() to clear_user_asm(), and make __clear_user() just # call clear_user(). # # Reported-by: syzbot+f25ecf4b2982d8c7a640@syzkaller-ppc64.appspotmail.com # Reported-by: Daniel Axtens # Suggested-by: Michael Ellerman # Fixes: de78a9c42a79 ("powerpc: Add a framework for Kernel Userspace Access Protection") # Signed-off-by: Andrew Donnellan # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20191209132221.15328-1-ajd@linux.ibm.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 d04cb29a7ef9e90cb0e4f16953f2d7484a9a48fb # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:11:0, 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/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 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd28774) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) INFO: Uncompressed kernel (size 0xd17f70) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6449592 Bytes = 6298.43 KiB = 6.15 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6480097 Bytes = 6328.22 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6483059 Bytes = 6331.11 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479979 Bytes = 6328.10 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479786 Bytes = 6327.92 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6482477 Bytes = 6330.54 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479813 Bytes = 6327.94 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479841 Bytes = 6327.97 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6482573 Bytes = 6330.64 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479812 Bytes = 6327.94 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479803 Bytes = 6327.93 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e00314 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479965 Bytes = 6328.09 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6482331 Bytes = 6330.40 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6479819 Bytes = 6327.95 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6483181 Bytes = 6331.23 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Image Name: Linux-5.5.0-rc1-gd04cb29a7ef9 Created: Sat Dec 14 09:18:49 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6480096 Bytes = 6328.22 KiB = 6.18 MiB Load Address: 00e00000 Entry Point: 00e002a4 Completed OK # rm -rf /kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc5 # Build took: 0:02:16.866896