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[lwip-users] Re: [lwip] uses struct member after free - bug


From: Paul Sheer
Subject: [lwip-users] Re: [lwip] uses struct member after free - bug
Date: Wed, 08 Jan 2003 23:48:08 -0000

not to mention

<  if(pcb == NULL) {
>  if(lpcb == NULL) {

and then there is also

<  if(tcp_input_pcb != pcb) {
>  if(tcp_input_pcb == pcb) {

in tcp_output() (according to the comments)

-paul

On 2002.06.19 14:41 Duncan Palmer wrote:
> I actually meant 'what source file is this in?' .  Xavier went and found it 
> anyway, so its cool. 
> 
> This helped with a problem we were having as well - thanks.
> 
> On Wednesday 19 June 2002 11:35, Dirk Koopman wrote:
> > On Wed, 2002-06-19 at 10:56, Duncan Palmer wrote:
> > > Where is it??
> > >
> > > On Tuesday 18 June 2002 22:06, Paul Sheer wrote:
> > > >   memp_free(MEMP_TCP_PCB, pcb);
> > > >   lpcb->callback_arg = pcb->callback_arg;              <**********
> > > >   lpcb->local_port = pcb->local_port;                  <**********
> > > >   ip_addr_set(&lpcb->local_ip, &pcb->local_ip);        <**********
> > > > #if LWIP_CALLBACK_API
> > > >   lpcb->accept = tcp_accept_null;
> > > > #endif /* LWIP_CALLBACK_API */
> > > >   TCP_REG((struct tcp_pcb **)&tcp_listen_pcbs, (struct tcp_pcb *)lpcb);
> > > >   return (struct tcp_pcb *)lpcb;
> > > >
> > > >
> > > > just noticed this
> > > >
> > > > *wacks sinners fingers with 50cm wooden ruler*
> > > >
> > > > -paul
> > > >
> > > > Paul Sheer Consulting IT Services . . . Tel . . . +27 21 761 7224
> > > > Email . . . address@hidden . . . . . . Pager . . . 088 0057245
> > > > Linux development, cryptography, recruitment,  support,  training
> > > > http://www.icon.co.za/~psheer . . . . http://rute.sourceforge.net
> > > > L I N U X . . . . . . . . . . . .  The Choice of a GNU Generation
> > > > [This message was sent through the lwip discussion list.]
> > >
> > > [This message was sent through the lwip discussion list.]
> >
> > [This message was sent through the lwip discussion list.]
> [This message was sent through the lwip discussion list.]
> 
Paul Sheer Consulting IT Services . . . Tel . . . +27 21 761 7224
Email . . . address@hidden . . . . . . Pager . . . 088 0057245
Linux development, cryptography, recruitment,  support,  training
http://www.icon.co.za/~psheer . . . . http://rute.sourceforge.net
L I N U X . . . . . . . . . . . .  The Choice of a GNU Generation
[This message was sent through the lwip discussion list.]




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