[bug #37271] endless loop seg = pcb->unacked; seg->next != NULL; seg = seg->next
11085 posts
Follow-up Comment #1, bug #37271 (project lwip):
When I have been stuck in this loop, it has been my doing and not a bug in
lwIP. In my experience this was caused by memory corruption, multiple freeing
of pbufs, or using an already freed pbuf.
Maybe in the stressing the Ethernet driver is doing something bad?
I can only agree to comment #1: having a loop in the TCP pcbs or segments is
most often a bug in the lwIP port (most often violating lwIP's threading
requirement of "only one context may be active in lwIP at a time").
Can you rule this out for sure? I don't want to say lwIP can't have bugs, but
for this kind of bug, please make sure it's not your port!
> I have no problems with mem( LWIPstats has no errors);
That does not mean anything: I wouldn't relate memory errors to this in any
way.
[bug #37271] endless loop seg = pcb->unacked; seg->next != NULL; seg = seg->next
11085 posts
Follow-up Comment #3, bug #37271 (project lwip):
I finally found the problem:
When I disabled the pre-emptive option of the RTOS it was running fine. So I
thought it must have something to do with task prio's.
I lowered the priority of "feeding" the stack with received data.
Now it runs perfect without any problem.
Thanks for the support!
Dig
