Wireshark-bugs: [Wireshark-bugs] [Bug 7028] Crash when reassembling LARGE xml data

Date: Fri, 19 Apr 2013 03:16:09 +0000

Comment # 5 on bug 7028 from
(In reply to comment #4)
> (In reply to comment #3)
> > The capture Jakub attached works for me on latest trunk. Scott, is your case
> > fixed as well?
> 
> You can always make this XML file XXXX times bigger....
> I think we should  have limit for reasembly and/or tvb length.

I am unclear if the crashes reported in this bug (and bug #7499) are simple
out-of-memory crashes or if there was actually an error in the code?

The sample captures on both bugs reassemble correctly for me, and while they
take a large amount of memory neither is particularly slow. Specifically, I am
*not* seeing the "more than 1000000 items in the tree" issue which would
definitely be a bug.

If there was an actual bug it's fixed now; if this is simply Wireshark trying
to allocate more memory than is available then it's basically the same issue
that's been around forever, just a new way of triggering high memory usage.

Aborting reassembly for extra large packets may be a good work-around, though I
suspect this issue will disappear entirely if we end up doing virtual
reassembly (as discussed on -dev in thread starting
https://www.wireshark.org/lists/wireshark-dev/201304/msg00159.html).

Thoughts?


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