This is what I got from GNOME bug reporting tool. I hope it'll be useful. If you still want to have backtrace from gdb, please let me know.
** Attachment added: "backtrace from GNOME bug reporting tool" http://librarian.launchpad.net/4970482/backtrace -- Epiphany crashes, if I try to rename a bookmark https://launchpad.net/bugs/70456 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
