On Fri, Feb 20, 2004 at 09:03:51AM -0000, Tim Everitt wrote:
> attached is a one frame capture file which seems to cause the LLC protocol
> dissector to drop into an infinite loop which only terminates when all
> physical and swap memory has been allocated and the process is terminated by
> the system.
The frame had two problems:
1) the length field in the 802.3 header was 1, which was too
short for an 802.2 header;
2) the frame was cut off at a snapshot length shorter than the
full frame length.
The first problem caused an exception to be thrown when dissecting the
802.2 header; the handler for that exception was adding the trailer (the
stuff past the value specified in the length field), and that was
throwing *another* exception due to the second problem - the exception
mechanism Ethereal uses can't handle exceptions thrown within an
exception handler, so it was just looping.
I've checked in a change to fix that.
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