Re: [PATCH] Reading the VDSO area - i386

[Jeremy Fitzhardinge]

Andi Kleen wrote:
> On Tuesday 17 July 2007 18:47:56 Jeremy Fitzhardinge wrote:
>   
>> John Blackwood wrote:
>>     
>>> I was doing some tests that attempt to read the VDSO area of a
>>> task through either the /proc/pid/mem or ptrace(PTRACE_PEEKTEXT,
>>> ...) interfaces, and it seems that when the CONFIG_COMPAT_VDSO kernel
>>> parameter is enabled, we can no longer successfully read the VDSO area
>>> on i386 kernels.
>>>       
>> Thanks.  Someone else noticed this recently, and posted a near-identical
>> patch.  But I can't seem to find it right now...
>>
>> Andrew, Andi: do you remember something like this passing by?
>>     
>
> Yes it was from Jan Beulich.
>   

Ah, yes.  For some reason I can't find it in my archives.  Do you have
it queued up?

    J

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