[lwip-devel] [bug #51694] tcp_receive trimming the first edge might produce bogus pbuf chains

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?51694>

                 Summary: tcp_receive trimming the first edge might produce
bogus pbuf chains
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Tue 08 Aug 2017 09:06:57 PM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: goldsimon
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

The code seemed to be there forever: when trimming the first edge, first pbufs
are set to "p->len = 0", which is kind of odd.

In addition to that, I'm not really sure the p->tot_len change is correct.

--> we need a unit test checking this :-/




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