On 01/26/2014 10:49 PM, Richard Weinberger wrote:
>>
>> No, because that information is available to user space unless we panic.
>
> Didn't you mean non-root?
> I thought one has to set dmesg_restrict anyways if kASLR is used.
>
> And isn't the offset available to perf too?
> Of course only for root, but still user space.
>
For certain system security levels one want to protect even from a rogue
root. In those cases, leaking that information via dmesg and perf isn't
going to work, either.
With lower security settings, by all means...
-hpa
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