# 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 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc6xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc6xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc6xx_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/sound/ppc/pmac.h:12:0, from /kisskb/src/sound/ppc/awacs.c:16: /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:208:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized] return _snd_ctl_add_slave(master, slave, 0); ^ /kisskb/src/sound/ppc/awacs.c:873:36: note: 'speaker_vol' was declared here struct snd_kcontrol *master_vol, *speaker_vol; ^ INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xab7f38) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xab7f38) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xac8620) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:04 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177322 Bytes = 5055.98 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:04 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177362 Bytes = 5056.02 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:04 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177218 Bytes = 5055.88 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00894 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:05 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177216 Bytes = 5055.88 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:05 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177524 Bytes = 5056.18 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:05 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5147144 Bytes = 5026.51 KiB = 4.91 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:06 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177410 Bytes = 5056.06 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:06 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5177301 Bytes = 5055.96 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00294 Image Name: Linux-5.5.0-rc1+ Created: Sat Dec 14 09:12:06 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5176924 Bytes = 5055.59 KiB = 4.94 MiB Load Address: 00b00000 Entry Point: 00b00894 Completed OK # rm -rf /kisskb/build/powerpc-fixes_ppc6xx_defconfig_powerpc-gcc5 # Build took: 0:03:21.577359