Subject: Re: [PATCH] lkdtm: include cacheflush.h

From: Paul Gortmaker <[email-masked]>
Date: Fri, 21 Mar 2014 15:36:16 -0400

On 14-03-21 03:33 PM, Kees Cook wrote:
> On Fri, Mar 21, 2014 at 12:31 PM, Paul Gortmaker
> <[email-masked]> wrote:
>> On Fri, Feb 14, 2014 at 6:58 PM, Kees Cook <[email-masked]> wrote:
>>> Some architectures need cacheflush.h explicitly included (mips) for
>>> use of flush_icache_range():
>>>
>>>     config: make ARCH=mips allmodconfig
>>>     All error/warnings:
>>>     >> ERROR: "flush_icache_range" undefined!
>>
>> The linux-next builds still fail with a similar error:
>>
>> http://kisskb.ellerman.id.au/kisskb/buildresult/10808358/
>>
>> I'm not sure if it ever was a compile error, or if it was always
>> a missing export symbol type error as it is apparently now.
> 
> It seems no one picked up this fix? Greg, you normally take my lkdtm work...

No, the "fix" is there, in linux-next, but it doesn't work.  :)

Paul.
--

> 
> -Kees
> 
>>
>> Paul.
>> --
>>
>>>
>>> Reported-by: Fengguang Wu <[email-masked]>
>>> Signed-off-by: Kees Cook <[email-masked]>
>>> ---
>>>  drivers/misc/lkdtm.c |    1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c
>>> index 47ed2d321351..2ebd52e05773 100644
>>> --- a/drivers/misc/lkdtm.c
>>> +++ b/drivers/misc/lkdtm.c
>>> @@ -46,6 +46,7 @@
>>>  #include <linux/debugfs.h>
>>>  #include <linux/vmalloc.h>
>>>  #include <linux/mman.h>
>>> +#include <asm/cacheflush.h>
>>>
>>>  #ifdef CONFIG_IDE
>>>  #include <linux/ide.h>
>>> --
>>> 1.7.9.5
>>>
>>>
>>> --
>>> Kees Cook
>>> Chrome OS Security
>>> --
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> 
> 
>