Buildresult: powerpc-fixes/40x/walnut_defconfig/powerpc-gcc5 built on Dec 17 2019, 01:33
kisskb
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Status:
OK
Date/Time:
Dec 17 2019, 01:33
Duration:
0:00:49.702532
Builder:
blade4b
Revision:
powerpc: Fix __clear_user() with KUAP enabled (
61e3acd8c693a14fc69b824cb5b08d02cb90a6e7)
Target:
powerpc-fixes/40x/walnut_defconfig/powerpc-gcc5
Branch:
powerpc-fixes
Compiler:
powerpc-gcc5
(powerpc64-linux-gcc (GCC) 5.5.0 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:
40x/walnut_defconfig
(
download
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Log:
Download original
Possible warnings (1)
arch/powerpc/kernel/head_40x.S:802: Warning: invalid register expression
Full Log
# git rev-parse -q --verify 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7^{commit} 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 already have revision, skipping fetch # git checkout -q -f -B kisskb 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # git clean -qxdf # < git log -1 # commit 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # Author: Andrew Donnellan <ajd@linux.ibm.com> # 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() (the regset code), # 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 __arch_clear_user(), and make __clear_user() # just call clear_user(). # # Reported-by: syzbot+f25ecf4b2982d8c7a640@syzkaller-ppc64.appspotmail.com # Reported-by: Daniel Axtens <dja@axtens.net> # Suggested-by: Michael Ellerman <mpe@ellerman.id.au> # Fixes: de78a9c42a79 ("powerpc: Add a framework for Kernel Userspace Access Protection") # Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> # [mpe: Use __arch_clear_user() for the asm version like arm64 & nds32] # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # 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 61e3acd8c693a14fc69b824cb5b08d02cb90a6e7 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_walnut_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 40x/walnut_defconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_walnut_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/arch/powerpc/kernel/head_40x.S: Assembler messages: /kisskb/src/arch/powerpc/kernel/head_40x.S:802: Warning: invalid register expression INFO: Uncompressed kernel (size 0x4fc5b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Completed OK # rm -rf /kisskb/build/powerpc-fixes_40x_walnut_defconfig_powerpc-gcc5 # Build took: 0:00:49.702532
© Michael Ellerman 2006-2018.