[Pvfs2-developers] protocol fomat mismatch causes server segfault

[Sam Lang]

Just committed a fix to HEAD.  Thanks for the report!

-sam

On May 9, 2007, at 2:59 PM, Kyle Schochenmaier wrote:

> Backtrace:
>
> [S 05/09 15:00] PVFS2 Server version 2.7.0pre1-2007-04-21-220052  
> starting...
> [New Thread 1082132832 (LWP 11300)]
> [New Thread 1090525536 (LWP 11301)]
> [New Thread 1098918240 (LWP 11302)]
> [S 05/09 15:00] PVFS2 Server ready.
> [E 15:00:24.742773] Error: poorly formatted protocol message received.
> [E 15:00:24.742819]    Protocol version mismatch: received major  
> version 3 when expecting 4.
> [E 15:00:24.742829]    Please verify your PVFS2 installation and  
> make sure that the version is
>   consistent.
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 47207450763200 (LWP 11297)]
> 0x00000000004112c9 in server_state_machine_start ()
> (gdb) bt
> #0  0x00000000004112c9 in server_state_machine_start ()
> #1  0x0000000000462148 in unexpected_map ()
> #2  0x000000000044ca5c in PINT_state_machine_invoke ()
> #3  0x000000000044c70f in PINT_state_machine_next ()
> #4  0x000000000044cdae in PINT_state_machine_continue ()
> #5  0x0000000000410feb in main ()
>
> And I believe the state/op from my debug file is '28', if thats at  
> all helpful.
>
>
> Kyle
>
> Sam Lang wrote:
>>
>> On Apr 24, 2007, at 1:41 PM, Kyle Schochenmaier wrote:
>>
>>> Is there a reason why this is a 'fatal' error?  I forgot to add  
>>> the new install to my path, and was therefore using an old  
>>> version of pvfs2-ls, which also caused my MD server to segfault.
>>
>> Hi Kyle,
>>
>> Sorry for the delayed response.  Do you know where the segfault is  
>> in the server?  A backtrace would be helpful.
>>
>>>
>>> I think we could do a workaround on this to make it still error,  
>>> but not segfault.
>>>
>>> The text is also goofy on this last message..
>>> (if someone wants to fix it:  line 203: src/proto/PINT-reqproto- 
>>> encode.c, it has an extra \n in there)
>>
>> Ok.  Committed a fix for this.
>>
>> -sam
>>>
>>> [D 12:17:27.501391] PVFS2 Server version  
>>> 2.7.0pre1-2007-04-21-220052 starting.
>>> [E 12:33:58.987667] Error: poorly formatted protocol message  
>>> received.
>>> [E 12:33:58.987707]    Protocol version mismatch: received major  
>>> version 3 when
>>> expecting 4.
>>> [E 12:33:58.987716]    Please verify your PVFS2 installation and  
>>> make sure that
>>> the version is
>>>   consistent.
>>>
>>> _______________________________________________
>>> Pvfs2-developers mailing list
>>> Pvfs2-developers at beowulf-underground.org
>>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers
>>>
>>
>>
>> !DSPAM:46409810259569439013359!
>>
>
>
> -- 
> Kyle Schochenmaier
> kschoche at scl.ameslab.gov
> Research Assistant, Dr. Brett Bode
> AmesLab - US Dept.Energy
> Scalable Computing Laboratory