Package: gmpc
Version: 0.19.1-1
Severity: important
Hello,
gmpc occasionally segfaults here. Running in gdb gave the following backtrace:
Program received signal SIGSEGV, Segmentation fault.
gmpc_mpddata_model_playlist_status_changed (self=0x908050, mi=0x905950,
what=<value optimized out>, conn=<value optimized out>)
at gmpc-mpddata-model-playlist.gob:243
243 gmpc-mpddata-model-playlist.gob: No such file or directory.
in gmpc-mpddata-model-playlist.gob
(gdb) bt
#0 gmpc_mpddata_model_playlist_status_changed (self=0x908050, mi=0x905950,
what=<value optimized out>, conn=<value optimized out>)
at gmpc-mpddata-model-playlist.gob:243
#1 0x00007ffff444e3ed in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#2 0x00007ffff4461cdb in ?? () from /usr/lib/libgobject-2.0.so.0
#3 0x00007ffff4463082 in g_signal_emit_valist ()
from /usr/lib/libgobject-2.0.so.0
#4 0x00007ffff44633ba in g_signal_emit_by_name ()
from /usr/lib/libgobject-2.0.so.0
#5 0x00007ffff77ae87c in mpd_status_update () from /usr/lib/libmpd.so.1
#6 0x000000000042acf0 in update_mpd_status () at mpdinteraction.c:417
#7 0x00007ffff3db083b in ?? () from /lib/libglib-2.0.so.0
#8 0x00007ffff3db012a in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#9 0x00007ffff3db3988 in ?? () from /lib/libglib-2.0.so.0
#10 0x00007ffff3db3e5d in g_main_loop_run () from /lib/libglib-2.0.so.0
#11 0x00007ffff5803ca7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#12 0x0000000000423ddc in main (argc=1, argv=0x7fffffffe3f8) at main.c:867
(gdb) bt full
#0 gmpc_mpddata_model_playlist_status_changed (self=0x908050, mi=0x905950,
what=<value optimized out>, conn=<value optimized out>)
at gmpc-mpddata-model-playlist.gob:243
iter = {stamp = 385438009, user_data = 0x0, user_data2 = 0x13,
user_data3 = 0x7ffff444caed}
path = 0x2b359c0
i = 20
list_iter = 0x0
data_iter = 0x1472c80
data = 0x1445080
new_length = 20
old_length = <value optimized out>
__PRETTY_FUNCTION__ = "gmpc_mpddata_model_playlist_status_changed"
__FUNCTION__ = "gmpc_mpddata_model_playlist_status_changed"
Looking at the offending source line gives
240 for(;i!= data_iter->song->pos;i++)
241 list_iter = list_iter->next;
242
243 if(list_iter->song)
I guess this is caused by running https://bitbucket.org/matclab/mpdrandomd in
the background to add random songs when the playlist gets too empty (as
configured here it keeps ten songs before the current one, and makes sure at
least ten songs follow the current song), so there's a race condition where
sometimes gmpc wants to process a song mpdrandomd just removed.
Note that this is currently just speculation, I haven't found a way to provoke
the segfault at will, and during normal use it is completely unpredictable how
long it takes gmpc to crash, can be minutes or days.
Best regards,
Christian Ohm
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.30-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages gmpc depends on:
ii libatk1.0-0 1.28.0-1 The ATK accessibility toolkit
ii libc6 2.10.1-1 GNU C Library: Shared libraries
ii libcairo2 1.8.8-2 The Cairo 2D vector graphics libra
ii libfontconfig1 2.6.0-4 generic font configuration library
ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib
ii libglade2-0 1:2.6.4-1 library to load .glade files at ru
ii libglib2.0-0 2.22.2-2 The GLib library of C routines
ii libgtk2.0-0 2.18.3-1 The GTK+ graphical user interface
ii libice6 2:1.0.5-1 X11 Inter-Client Exchange library
ii libmpd1 0.19.0-1 High-level client library for acce
ii libpango1.0-0 1.26.0-1 Layout and rendering of internatio
ii libsexy2 0.1.11-2+b1 collection of additional GTK+ widg
ii libsm6 2:1.1.1-1 X11 Session Management library
ii libsoup2.4-1 2.28.1-1 an HTTP library implementation in
ii libsqlite3-0 3.6.19-1 SQLite 3 shared library
ii libx11-6 2:1.2.2-1 X11 client-side library
ii libxml2 2.7.6.dfsg-1 GNOME XML library
ii zlib1g 1:1.2.3.3.dfsg-15 compression library - runtime
gmpc recommends no packages.
Versions of packages gmpc suggests:
ii gmpc-plugins 0.19.0-1 Plugins for the GNOME Music Player
ii mpd 0.15.4-1 Music Player Daemon
-- no debconf information
--
Sigh. I like to think it's just the Linux people who want to be on
the "leading edge" so bad they walk right off the precipice.
(Craig E. Groeschel)
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