[lwip-users] Pbuf assertion failure

[Etienne Lanoy]

I have add a printf in the pbuf_free function and before the assertion 
occur the pbuf->flag is equal to 54 (decimal)....
I don't understand what's happend.

Do anyone know how I can solve my problem ? It seem the Pbuf is broken 
but I haven't any idea to solve this mistakes
in my software.
This occur after a tcp_write and a tcp_output. I do that everywhere in 
my software and I haven't problems.

I'm using NIOS (Altera) , I have released my quartus 5.1 SP2, Nios 2 5.1 
SP1 and I haven't data cache in my Nios core.
So, normally, this is not due to the bug reported by Altera.

Thank you a lot
Etienne


Etienne Lanoy a écrit:

> Yes I'm using Altera Nios but I have search the patch for the Data 
> cache bug but
> I've not found it.
>
> I'm very desagree because in all my software I do the same action 
> tcp_write and after
> tcp_output. There is no problem. Maybe something is broken in my 
> software but
> I haven't any idea what can produce this assertion failure.
>
> I thank you a lot for your help.
>
> Best regards,
> Etienne
>
> Jan Ulvesten a écrit:
>
> > Are you running Altera/Nios II?
> >
> > If yes, check out Altera website and/or niosforum.com. There is a
> > problem with the Nios II data cache. A patch is available (to the IDE).
> > Jan Ulvesten
> > Senior Software Engineer
> > SICOM  AS
> > Tel   +47 72 89 56 55
> > Fax  +47 72 89 56 51
> > Mob +47 416 62 033
> >
> > -----Original Message-----
> > From: Etienne Lanoy [mailto:address@hidden Sent: 6. april 2006 14:21
> > To: address@hidden
> > Subject: SPAM? [lwip-users] Pbuf assertion failure
> >
> > Hello,
> >
> > I've a problem with an assertion in the file pbuf.c :
> > In the function pbuf_free, the assertion
> >
> > LWIP_ASSERT("pbuf_free: sane flags",
> >    p->flags == PBUF_FLAG_RAM || p->flags == PBUF_FLAG_ROM ||
> >    p->flags == PBUF_FLAG_REF || p->flags == PBUF_FLAG_POOL);
> >
> > occur.
> >
> > Before that I have done a tcp_write and a tcp_output
> >
> > I've never see it before. Do you know what's happend ?
> >
> > I use it all arround my software and in my new piece of code I'm writing
> >
> > fail this assertion...
> > I don't understand.
> >
> > I thank you a lot.
> >
> > Etienne