Re: [GIT PULL] x86/kaslr for v3.14

From: H. Peter Anvin
Date: Tue Jan 21 2014 - 09:21:29 EST


On 01/21/2014 01:00 AM, Peter Zijlstra wrote:
>>
>> So this is presumably something that needs to be fixed in perf?
>
> Where do we learn about the offset from userspace?
>

Now this is tricky... if this offset is too easy to get it completely
defeats kASLR. On the other hand, I presume that if we are exporting
/proc/kcore we're not secure anyway. Kees, I assume that in "secure"
mode perf annotations simply wouldn't work anyway?

-hpa

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/