Re: gdbserver delayed packet event issue

["karthikeyan.s" <informkarthik@gmail.com>]

Will try 7.2 but in the meantime, The complete version is 7.1.50.20100416.

On Thu, Nov 11, 2010 at 4:30 PM, Pedro Alves <pedro@codesourcery.com> wrote:
> On Thursday 11 November 2010 05:52:17, karthikeyan.s wrote:
>> Hi,
>> I am seeing an issue with the gdb remote debugging, this is gdb 7.1.50
>> version. I have marked the erroneous states with line --> below.
>>
>> gdbserver sometimes gets a delayed event for the packet
>> QStartNoAckMode sent from the host. In the case pasted below gdbserver
>> gets two events clubbed together when the client has sent the second
>> "QStartNoAckMode" packet after its timeout. At this stage, gdbserver
>> ends up sending two "$OK" while the client is expecting only one and
>> the state gets messed up between client and server.
>>
>> 1) It seems that the client does not handle issues with the network.
>> Instead it assumes the packet is lost on a timeout.
>> 2) Why doesn't gdbserver get an event on the first request itself. I
>> used writeshark on the client side to confirm the packet is being
>> sent. And tcpdump on the remote side to see that the packet does come
>> in at the target.
>
> "7.1.50" is quite vague.  All snapshots from the 7.1 release up to
> the 7.2 release were named like that.  There should be a date
> after the "50".  Which is it?  There was a similar problem fixed
> around April/March 2010.
>
> You could also try switching to 7.2 or a later snapshot and
> confirm the problem is gone.
>
> --
> Pedro Alves
>



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