[openss7] Re: error when testing SCTP

["Brian F. G. Bidulock" <bidulock@openss7.org>]

yanxinyu,

You could start by setting the DFLAGS in the top-level makefile
to -D_DEBUG from -D_SAFE.  That way, hopefully,  more diagnostic
information will be generated before the crash.

Because it takes so long to accumulate, I'm suspecting a locking
problem.  (Timer clash.)

Could you reattempt with -D_DEBUG?

--brian


yanxinyu wrote:                                     Wed, 16 Jan 2002 19:25:25
> 
>    Brain:
>    
>        I have succeeded in sending and receiving packets between two
>    host(both with the kernel of 2.2.14-5.0) based on NPI, but met the
>    mistake when sending more packets at the "sending end".
>    
>        I sended one packet per 20ms, and met the mistake when the total
>    packets had reached about 15000. The system put the following message:
>    
>    *********
>    
>    __bufq_add: assure(q->q_head) failed at sctp_bufq.h +97
>    
>    __bufq_add: assure(q->q_tail) failed at sctp_bufq.h +98
>    
>    Unable to handle kernel NULL pointer dereference at virtual address
>    00000000
>    
>    current->tss.cr3 = 0e760000,%cr3 = 0e760000
>    
>    *pde = 00000000
>    
>    Oops: 0000
>    
>    CPU:    0
>    
>    ...
>    
>    
>    
>    *********
>    
>        The sending and receiving programs are in the attachment named
>    with "test-sd.c" and "test-rv.c". The two are both based on
>    test-sctp_n.c
>    
>    
>    
>        By the way, could you tell me the transmission ability of the
>    SCTP, such as how fast can one packet be sent. Is 1ms enougth?
>    
>        thank you!
>    
>                    yanxinyu


-- 
Brian F. G. Bidulock    ¦ The reasonable man adapts himself to the ¦
bidulock@openss7.org    ¦ world; the unreasonable one persists in  ¦
http://www.openss7.org/ ¦ trying  to adapt the  world  to himself. ¦
                        ¦ Therefore  all  progress  depends on the ¦
                        ¦ unreasonable man. -- George Bernard Shaw ¦