gstreamer causes a SIGSEGV in rhythmbox on play

[Robin Sheat]

On one machine that has just been upgraded from edgy to feisty, rhythmbox no longer works, and it seems to be gstreamer's fault. Here is the result from GDB with -dbg installed:

(rhythmbox:10786): Rhythmbox-WARNING **: Couldn't find an x overlay
[New Thread -1279063152 (LWP 10889)]
[New Thread -1288459376 (LWP 10890)]
[Thread -1279063152 (LWP 10889) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1230055728 (LWP 10786)]
gst_base_sink_pad_getcaps (pad=0x8288350) at gstbasesink.c:368
368 gstbasesink.c: No such file or directory.
        in gstbasesink.c
(gdb) bt
#0 gst_base_sink_pad_getcaps (pad=0x8288350) at gstbasesink.c:368
#1 0xb729619f in gst_pad_get_caps_unlocked (pad=0x8288350) at gstpad.c:1968
#2 0xb72999b0 in gst_pad_get_caps (pad=0x8288350) at gstpad.c:2056
#3 0xb728de99 in gst_proxy_pad_do_getcaps (pad=0x894d8e0) at gstghostpad.c:228
#4 0xb729619f in gst_pad_get_caps_unlocked (pad=0x894d8e0) at gstpad.c:1968
#5 0xb72999b0 in gst_pad_get_caps (pad=0x894d8e0) at gstpad.c:2056
#6 0xb728de99 in gst_proxy_pad_do_getcaps (pad=0x894d9c0) at gstghostpad.c:228
#7 0xb729619f in gst_pad_get_caps_unlocked (pad=0x894d9c0) at gstpad.c:1968
#8 0xb72999b0 in gst_pad_get_caps (pad=0x894d9c0) at gstpad.c:2056
#9 0xb728de99 in gst_proxy_pad_do_getcaps (pad=0x894d800) at gstghostpad.c:228
#10 0xb729619f in gst_pad_get_caps_unlocked (pad=0x894d800) at gstpad.c:1968
#11 0xb729ba5f in gst_pad_link (srcpad=0x89921c8, sinkpad=0x894d800)
    at gstpad.c:1640
#12 0xb72bb2c0 in pad_link_maybe_ghosting (src=0x89921c8, sink=0x894d800)
    at gstutils.c:1310
#13 0xb72bc4b8 in gst_element_link_pads (src=0x891e390,
    srcpadname=0xb2334ab1 "src", dest=0x874e990, destpadname=0x0)
    at gstutils.c:1454
#14 0xb23271e2 in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
#15 0x0891e390 in ?? ()
#16 0xb2334ab1 in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
#17 0x0874e990 in ?? ()
#18 0x00000000 in ?? ()

I'd grab a coredump, but rhythmbox doesn't seem to leave one (I have ulimit -c unlimited, but despite saying 'Segmentation fault (core dumped)' I don't know where it's put it).

sheats@annatar:/proc/asound$ cat cards
 0 [AudioPCI ]: ENS1370 - Ensoniq AudioPCI
                      Ensoniq AudioPCI ENS1370 at 0xe400, irq 5

sheats@annatar:/proc/asound$ cat version
Advanced Linux Sound Architecture Driver Version 1.0.14rc1 (Tue Jan 09 09:56:17 2007 UTC).

Hopefully this is enough information to go on.

[Robin Sheat (eythian)]

Note: rhythmbox/gstreamer worked fine in edgy, other sound seems to work (gaim dings)

[Robin Sheat (eythian)]

Thanks to moch on #gstreamer, disabling the visualisation plugin prevents the crash.

[Robin Sheat (eythian)]

It is apparently related to this: http://bugzilla.gnome.org/show_bug.cgi?id=413801 which has been fixed in 0.10-13, it's be nice to have the patch pushed through to the Ubuntu version :)

[Robin Sheat (eythian)]

OK, final resolution: gstreamer0.10-x wasn't installed, and so there were no video sinks available, and so things were crashing. This may be a fault in the distro upgrade tool?

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported, but feel free to report any other bugs you find.