Wireshark-bugs: [Wireshark-bugs] [Bug 10233] Wireshark crashes if Lua heuristic dissector return
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 24 Dec 2014 00:40:10 +0000

changed bug 10233


What Removed Added
Status UNCONFIRMED IN_PROGRESS
Ever confirmed   1

Comment # 1 on bug 10233 from 
(sorry, missed this bug whenever it was submitted months ago...)

Fascinating bug - took a while to track down.  The root cause was a bug
unrelated to the Lua c-code, it just happens the Lua c-code needs to use
something other heuristic dissectors apparently don't.

But the annoying/unfortunate part is the existing Lua c-code correctly checks
for this error condition and should have gracefully continued instead of
crashing, but didn't.  It calls report_failure() when it detects this error,
but apparently report_failure() is somehow not preventing GTK from continuing
to try to dissect the next packet before returning form the report_failure()
function call, which means epan_dissect_run() is being called while still being
inside of another epan_dissect_run() call, and thus wmem_scope asserts because
it can't handle recursion.

So I'll have to use something other than report_failure() I guess.

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