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Message-ID: <201902212006.96mWCDZS%fengguang.wu@intel.com>
Date: Thu, 21 Feb 2019 20:56:44 +0800
From: kbuild test robot <lkp@...el.com>
To: Russell Currey <ruscur@...sell.cc>
Cc: kbuild-all@...org, linuxppc-dev@...ts.ozlabs.org,
Russell Currey <ruscur@...sell.cc>, npiggin@...il.com,
kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH 3/7] powerpc/mm: Add a framework for Kernel Userspace
Access Protection
Hi Christophe,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on v5.0-rc4 next-20190221]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Russell-Currey/Kernel-Userspace-Protection-for-radix/20190221-193749
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=8.2.0 make.cross ARCH=powerpc
Note: the linux-review/Russell-Currey/Kernel-Userspace-Protection-for-radix/20190221-193749 HEAD 5f2951ce63da41c63227ed597252cea801adb5a4 builds fine.
It only hurts bisectibility.
All errors (new ones prefixed by >>):
In file included from arch/powerpc/kernel/asm-offsets.c:31:
arch/powerpc/kernel/asm-offsets.c: In function 'main':
>> include/linux/compiler_types.h:127:35: error: 'struct paca_struct' has no member named 'user_access_allowed'
#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
^~~~~~~~~~~~~~~~~~
include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE'
asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val))
^~~
include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof'
#define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
^~~~~~~~~~~~~~~~~~~
include/linux/kbuild.h:11:14: note: in expansion of macro 'offsetof'
DEFINE(sym, offsetof(struct str, mem))
^~~~~~~~
arch/powerpc/kernel/asm-offsets.c:266:2: note: in expansion of macro 'OFFSET'
OFFSET(PACA_USER_ACCESS_ALLOWED, paca_struct, user_access_allowed);
^~~~~~
make[2]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
vim +127 include/linux/compiler_types.h
71391bdd Xiaozhou Liu 2018-12-14 126
71391bdd Xiaozhou Liu 2018-12-14 @127 #define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
71391bdd Xiaozhou Liu 2018-12-14 128
:::::: The code at line 127 was first introduced by commit
:::::: 71391bdd2e9aab188f86bf1ecd9b232531ec7eea include/linux/compiler_types.h: don't pollute userspace with macro definitions
:::::: TO: Xiaozhou Liu <liuxiaozhou@...edance.com>
:::::: CC: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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