[mips-sjhill:mips-for-linux-next 58/62] arch/mips/kernel/uprobes.c:304:15: error: variable or field 'kstart' declared void

* [mips-sjhill:mips-for-linux-next 58/62] arch/mips/kernel/uprobes.c:304:15: error: variable or field 'kstart' declared void
@ 2016-09-23 18:06 kbuild test robot
  2016-09-26 10:24 ` Ralf Baechle
  0 siblings, 1 reply; 4+ messages in thread
From: kbuild test robot @ 2016-09-23 18:06 UTC (permalink / raw)
  To: James Hogan; +Cc: kbuild-all, linux-mips, Ralf Baechle

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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

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