Wireshark-bugs: [Wireshark-bugs] [Bug 10233] Wireshark crashes if Lua heuristic dissector return

Date: Wed, 24 Dec 2014 18:27:32 +0000

Comment # 7 on bug 10233 from
(In reply to Bill Meier from comment #6)
> Yep: sounds like queued-up gtk callbacks are being executed when
> gtk_dialog_run() is executed (as part of doing the alert box) since that
> effectively runs gtk_main_loop().

Yeah, I was tracing it last night and it's calling presize_handler_callback(),
which was a GTK callback that runs when the main loop is idle, which it would
be during report_failure()'s dialog box being shown.  That
presize_handler_callback  callback is hooked in when the viewed cells become
"dirty" (i.e., need to be redrawn), which happens when a new capture file is
loaded of course.

>From the stack trace, it looks like the initial epan_dissect_run() is being
called due to packet_list_select_first_row() having been called (i.e., the
first row/packet in the GUI's packet list is selected/highlighted), and during
that epan_dissect_run() I call report_failure() which displays the modal dialog
box and goes into idle, thereby triggering the presize_handler_callback to do
its thing and eventually invoke epan_dissect_run() again.

-hadriel


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