tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 5c84fce56580d5297cd473b57f893e362b332109
commit: abb4387dc4c5898e87a93f152d3ad4b991397f22 [216/292] include/linux/string.h: add the option of fortified string.h functions
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout abb4387dc4c5898e87a93f152d3ad4b991397f22
# save the attached .config to linux build tree
make.cross ARCH=xtensa
All errors (new ones prefixed by >>):
In file included from include/linux/bitmap.h:8:0,
from include/linux/cpumask.h:11,
from include/linux/rcupdate.h:40,
from include/linux/rculist.h:10,
from include/linux/pid.h:4,
from include/linux/sched.h:13,
from include/linux/ptrace.h:5,
from arch/xtensa/kernel/asm-offsets.c:21:
>> include/linux/string.h:199:24: error: redefinition of 'strcpy'
__FORTIFY_INLINE char *strcpy(char *p, const char *q)
^
In file included from include/linux/string.h:18:0,
from include/linux/bitmap.h:8,
from include/linux/cpumask.h:11,
from include/linux/rcupdate.h:40,
from include/linux/rculist.h:10,
from include/linux/pid.h:4,
from include/linux/sched.h:13,
from include/linux/ptrace.h:5,
from arch/xtensa/kernel/asm-offsets.c:21:
arch/xtensa/include/asm/string.h:19:21: note: previous definition of 'strcpy' was here
static inline char *strcpy(char *__dest, const char *__src)
^
In file included from include/linux/bitmap.h:8:0,
from include/linux/cpumask.h:11,
from include/linux/rcupdate.h:40,
from include/linux/rculist.h:10,
from include/linux/pid.h:4,
from include/linux/sched.h:13,
from include/linux/ptrace.h:5,
from arch/xtensa/kernel/asm-offsets.c:21:
>> include/linux/string.h:210:24: error: redefinition of 'strncpy'
__FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size)
^
In file included from include/linux/string.h:18:0,
from include/linux/bitmap.h:8,
from include/linux/cpumask.h:11,
from include/linux/rcupdate.h:40,
from include/linux/rculist.h:10,
from include/linux/pid.h:4,
from include/linux/sched.h:13,
from include/linux/ptrace.h:5,
from arch/xtensa/kernel/asm-offsets.c:21:
arch/xtensa/include/asm/string.h:38:21: note: previous definition of 'strncpy' was here
static inline char *strncpy(char *__dest, const char *__src, size_t __n)
^
make[2]: *** [arch/xtensa/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 +/strcpy +199 include/linux/string.h
193 void fortify_panic(const char *name) __noreturn __cold;
194 void __read_overflow(void) __compiletime_error("detected read beyond size of object passed as 1st parameter");
195 void __read_overflow2(void) __compiletime_error("detected read beyond size of object passed as 2nd parameter");
196 void __write_overflow(void) __compiletime_error("detected write beyond size of object passed as 1st parameter");
197
198 #if !defined(__NO_FORTIFY) && defined(__OPTIMIZE__) && defined(CONFIG_FORTIFY_SOURCE)
> 199 __FORTIFY_INLINE char *strcpy(char *p, const char *q)
200 {
201 size_t p_size = __builtin_object_size(p, 0);
202 size_t q_size = __builtin_object_size(q, 0);
203 if (p_size == (size_t)-1 && q_size == (size_t)-1)
204 return __builtin_strcpy(p, q);
205 if (strscpy(p, q, p_size < q_size ? p_size : q_size) < 0)
206 fortify_panic(__func__);
207 return p;
208 }
209
> 210 __FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size)
211 {
212 size_t p_size = __builtin_object_size(p, 0);
213 if (__builtin_constant_p(size) && p_size < size)
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
