Comment # 8 on bug 1017652 from Karl Ove Hufthammer

(In reply to Dominique Leuenberger from comment #7)
> Best is to extract a back trace directly on your machine; try with:
> 
> coredumpctl gdb /usr/lib/tracker-extract
> 
> then at the (gdb) prompt type "bt full"; if there are mentions of missing
> -debuginfo packages, please install them and reproduce the coredumpctl gdb
> command (there should be no '???' in the resulting dump.
> 
> With this it might be possible to find some clues where it's happening.

coredumpctl couldn���t find any coredump files, but running gdb manually I
managed to extract the information.

First, tracker 1.10.4 became available just a moment ago, and that seemed to
have cured most of the crashes. But running gdb on the *old* (tracker 1.10.3),
I found this:

#0  0x00007fabff6e3eb7 in munlock () at /lib64/libc.so.6
#1  0x00007fabbc93611f in delete_fluid_defsfont () at
/usr/lib64/libfluidsynth.so.1
#2  0x00007fabbc936256 in fluid_defsfont_sfont_delete () at
/usr/lib64/libfluidsynth.so.1
#3  0x00007fabbc94b7d2 in fluid_synth_sfont_unref () at
/usr/lib64/libfluidsynth.so.1
#4  0x00007fabbc950ce0 in fluid_synth_sfunload () at
/usr/lib64/libfluidsynth.so.1
#5  0x00007fabbcbee271 in  () at
/usr/lib64/gstreamer-1.0/libgstfluidsynthmidi.so
#6  0x00007fabce3ed90e in gst_element_change_state () at
/usr/lib64/libgstreamer-1.0.so.0
#7  0x00007fabce3ee07f in  () at /usr/lib64/libgstreamer-1.0.so.0

libfluidsynth is a MIDI library, and the crashes seemed to be releated to
extracting metadata from MIDI files (.mid files).

With the new 1.10.4 version it doesn���t crash on MIDI files (or perhaps it���s
just indexed all of them?), but I still get crashes, now on MP3 files,
referencing the libmediaart library:

#0  0x00007f4b3f6b6e97 in unlink () at /lib64/libc.so.6
#1  0x00007f4b4034af7b in  () at /usr/lib64/libmediaart-2.0.so.0
#2  0x00007f4b4034cbf8 in media_art_process_file () at
/usr/lib64/libmediaart-2.0.so.0
#3  0x00007f4a80095dc9 in tracker_extract_get_metadata (info=0x7f4b20033e60)
    at tracker-extract-mp3.c:2584
        media_art_process = <optimized out>
        error = 0x7f4a90437390