[lwip-devel] [bug #37271] endless loop seg = pcb->unacked; seg->next != NULL; seg = seg->next

[Dig Kleppe]

URL:
  <http://savannah.nongnu.org/bugs/?37271>

                 Summary: endless loop seg = pcb->unacked; seg->next != NULL;
seg = seg->next
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: digkleppe
            Submitted on: Wed 05 Sep 2012 06:50:42 AM GMT
                Category: TCP
                Severity: 3 - Normal
              Item Group: Crash Error
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: 1.4.0

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Details:

In tcp_out.c line 928
After stressing the stack sometimes an endless loop is entered:
 for (; useg->next != NULL; useg = useg->next);

when useg->next= useg

line 1248:
 for (seg = pcb->unacked; seg->next != NULL; seg = seg->next);

seg->next = seg

I have no problems with mem( LWIPstats has no errors);

Dig Kleppe
 





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File Attachments:


-------------------------------------------------------
Date: Wed 05 Sep 2012 06:50:42 AM GMT  Name: lwipopts.h  Size: 20kB   By:
digkleppe

<http://savannah.nongnu.org/bugs/download.php?file_id=26473>

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