tree: git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill.git mips-for-linux-next
head: 3cd97a2d95ac84bf17d4d538960d3e17585a791c
commit: a0b7ccb92e7b57f3c4cf5bf8a875fe7ecf00fe2c [58/62] MIPS: uprobes: Flush icache via kernel address
config: mips-allmodconfig (attached as .config)
compiler: mips-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout a0b7ccb92e7b57f3c4cf5bf8a875fe7ecf00fe2c
# save the attached .config to linux build tree
make.cross ARCH=mips
All error/warnings (new ones prefixed by >>):
arch/mips/kernel/uprobes.c: In function 'arch_uprobe_copy_ixol':
>> arch/mips/kernel/uprobes.c:304:15: error: variable or field 'kstart' declared void
void *kaddr, kstart;
^~~~~~
>> arch/mips/kernel/uprobes.c:308:9: warning: assignment makes integer from pointer without a cast [-Wint-conversion]
kstart = kaddr + (vaddr & ~PAGE_MASK);
^
>> arch/mips/kernel/uprobes.c:309:9: warning: passing argument 1 of 'memcpy' makes pointer from integer without a cast [-Wint-conversion]
memcpy(kstart, src, len);
^~~~~~
In file included from include/linux/string.h:18:0,
from include/linux/bitmap.h:8,
from include/linux/cpumask.h:11,
from arch/mips/include/asm/processor.h:15,
from arch/mips/include/asm/thread_info.h:15,
from include/linux/thread_info.h:54,
from include/asm-generic/preempt.h:4,
from ./arch/mips/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:59,
from include/linux/spinlock.h:50,
from include/linux/wait.h:8,
from include/linux/fs.h:5,
from include/linux/highmem.h:4,
from arch/mips/kernel/uprobes.c:1:
arch/mips/include/asm/string.h:138:14: note: expected 'void *' but argument is of type 'int'
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
^~~~~~
vim +/kstart +304 arch/mips/kernel/uprobes.c
298 *(uprobe_opcode_t *)&auprobe->orig_inst[0].word);
299 }
300
301 void __weak arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
302 void *src, unsigned long len)
303 {
> 304 void *kaddr, kstart;
305
306 /* Initialize the slot */
307 kaddr = kmap_atomic(page);
> 308 kstart = kaddr + (vaddr & ~PAGE_MASK);
> 309 memcpy(kstart, src, len);
310 flush_icache_range(kstart, kstart + len);
311 kunmap_atomic(kaddr);
312 }
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
