[dpdk-dev] [PATCH v5] eal: out-of-bounds write

Sergio Gonzalez Monroy sergio.gonzalez.monroy at intel.com
Mon Jun 20 13:29:06 CEST 2016

On 20/06/2016 11:09, Thomas Monjalon wrote:
> 2016-06-20 10:38, Sergio Gonzalez Monroy:
>> On 20/06/2016 10:14, Thomas Monjalon wrote:
>>>> +		RTE_LOG(ERR, EAL,
>>>> +			"All memory segments exhausted by IVSHMEM. "
>>> There is no evidence that it is related to IVSHMEM.
>>> "Not enough memory segments." would be more appropriate.
>> Actually we would hit this issue when all memsegs have been used by IVSHMEM.
>> So I think the message is accurate.
> I think it's saner to avoid mixing "potential root cause of a use case" and
> "accurate description of the error".
> One day, the root cause could be different and the message will become wrong.
> Here there is not enough memory segment.

So the whole point of doing the check before the loop was to display
the error message with its specific cause.

I would think that if the code changes and the message is not accurate then
it should also be updated.

So if folks prefer a more generic error message probably we don't need 
the check
before the loop and just change the check condition inside the loop that 
end up printing the generic error message (after the loop).

Basically v1 would do that.


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