TBB - What are /tmp/0123.mlf files (where 0123 is PID of Firefox)

Using tor-browser-linux64-6.0.6_en-US.tar.xz

This is a general question, but related to the other ticket #200100

In /tmp/ I found some files (*.MLF) , filename is the PID of Firefox.

(for example, the process "0123 ./firefox --class Tor Browser -profile TorBrowser/Data/Browser/profile.default" relates to /tmp/1234.mlf)

What are MLF files? Never seen them before. They appeared after a TBB's browser crashed and couldn't restart due to a faulty Browser/libxul.so.

Anyway. They seem memory dumps. But why?

(2268780 bytes) First bytes header (if any) starting with 010100790a2a21

Example of readable contents:

$ strings 0189.mlf /home/ronv/tor-browser/Browser/libnspr4.so /home/ronv/tor-browser/Browser/libplc4.so /home/ronv/tor-browser/Browser/libplds4.so /home/ronv/tor-browser/Browser/libnssutil3.so /home/ronv/tor-browser/Browser/libnss3.so /home/ronv/tor-browser/Browser/libsmime3.so /home/ronv/tor-browser/Browser/libssl3.so /home/ronv/tor-browser/Browser/libmozsqlite3.so /home/ronv/tor-browser/Browser/liblgpllibs.so /home/ronv/tor-browser/Browser/libxul.so /home/ronv/tor-browser/Browser/browser/components/libbrowsercomps.so /home/ronv/tor-browser/Browser/libsoftokn3.so /home/ronv/tor-browser/Browser/libfreebl3.so /home/ronv/tor-browser/Browser/libnssckbi.so

Ideas? Anyone?

Trac:
Username: ronvandaal_