sudo gdb gst-launch-1.0 16998
GNU gdb (Linaro GDB) 7.4-2012.06-ubuntu
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/bin/gst-launch-1.0...Reading symbols from /usr/lib/debug/.build-id/38/50aaa25d704602911d47410741974934d8f404.debug...done.
done.
Attaching to program: /usr/bin/gst-launch-1.0, process 16998
Reading symbols from /usr/lib/i386-linux-gnu/libgstreamer-1.0.so.0...Reading symbols from /usr/lib/debug/.build-id/6f/e478d2ad8cfbdd1dabd12b07f2b7960419de6e.debug...done.
done.
Loaded symbols for /usr/lib/i386-linux-gnu/libgstreamer-1.0.so.0
Reading symbols from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0...Reading symbols from /usr/lib/debug/usr/lib/i386-linux-gnu/libgobject-2.0.so.0.3302.0...done.
done.
Loaded symbols for /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Reading symbols from /lib/i386-linux-gnu/libglib-2.0.so.0...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libglib-2.0.so.0.3302.0...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libglib-2.0.so.0
Reading symbols from /lib/i386-linux-gnu/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libpthread-2.15.so...done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[New Thread 0xb62a9b40 (LWP 17001)]
[New Thread 0xb6cf6b40 (LWP 17000)]
done.
Loaded symbols for /lib/i386-linux-gnu/libpthread.so.0
Reading symbols from /lib/i386-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libc-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libc.so.6
Reading symbols from /usr/lib/i386-linux-gnu/libgmodule-2.0.so.0...Reading symbols from /usr/lib/debug/usr/lib/i386-linux-gnu/libgmodule-2.0.so.0.3302.0...done.
done.
Loaded symbols for /usr/lib/i386-linux-gnu/libgmodule-2.0.so.0
Reading symbols from /lib/i386-linux-gnu/librt.so.1...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/librt-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/librt.so.1
Reading symbols from /lib/i386-linux-gnu/libdl.so.2...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libdl-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libdl.so.2
Reading symbols from /usr/lib/i386-linux-gnu/libffi.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libffi.so.6
Reading symbols from /lib/i386-linux-gnu/libpcre.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libpcre.so.3
Reading symbols from /lib/ld-linux.so.2...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/ld-2.15.so...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/i386-linux-gnu/libnss_compat.so.2...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libnss_compat-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libnss_compat.so.2
Reading symbols from /lib/i386-linux-gnu/libnsl.so.1...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libnsl-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libnsl.so.1
Reading symbols from /lib/i386-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libnss_nis-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libnss_nis.so.2
Reading symbols from /lib/i386-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libnss_files-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libnss_files.so.2
Reading symbols from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstautodetect.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstautodetect.so
Reading symbols from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstcoreelements.so...Reading symbols from /usr/lib/debug/.build-id/b4/f39c23ae8b75c7e72d06fc9aeb4c8c1bfa740f.debug...done.
done.
Loaded symbols for /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstcoreelements.so
Reading symbols from /usr/lib/i386-linux-gnu/libgstbase-1.0.so.0...Reading symbols from /usr/lib/debug/.build-id/f5/0f0c2685af90b7a349d700870a7f2dcde029a1.debug...done.
done.
Loaded symbols for /usr/lib/i386-linux-gnu/libgstbase-1.0.so.0
Reading symbols from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstxvimagesink.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstxvimagesink.so
Reading symbols from /usr/lib/i386-linux-gnu/libgstvideo-1.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libgstvideo-1.0.so.0
Reading symbols from /usr/lib/i386-linux-gnu/libX11.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libX11.so.6
Reading symbols from /usr/lib/i386-linux-gnu/libXv.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libXv.so.1
Reading symbols from /usr/lib/i386-linux-gnu/libXext.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libXext.so.6
Reading symbols from /lib/i386-linux-gnu/libm.so.6...Reading symbols from /usr/lib/debug/lib/i386-linux-gnu/libm-2.15.so...done.
done.
Loaded symbols for /lib/i386-linux-gnu/libm.so.6
Reading symbols from /usr/lib/i386-linux-gnu/liborc-0.4.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/liborc-0.4.so.0
Reading symbols from /usr/lib/i386-linux-gnu/libxcb.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libxcb.so.1
Reading symbols from /usr/lib/i386-linux-gnu/libXau.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libXau.so.6
Reading symbols from /usr/lib/i386-linux-gnu/libXdmcp.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libXdmcp.so.6
Reading symbols from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstvideo4linux2.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstvideo4linux2.so
Reading symbols from /usr/lib/i386-linux-gnu/libv4l2.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libv4l2.so.0
Reading symbols from /usr/lib/i386-linux-gnu/libv4lconvert.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libv4lconvert.so.0
Reading symbols from /usr/lib/i386-linux-gnu/libjpeg.so.8...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/i386-linux-gnu/libjpeg.so.8
0xb76fb424 in __kernel_vsyscall ()
(gdb) thread apply all bt

Thread 3 (Thread 0xb6cf6b40 (LWP 17000)):
#0  0xb76fb424 in __kernel_vsyscall ()
#1  0xb74851f6 in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#2  0xb74fec2e in g_usleep (microseconds=50000) at /build/buildd/glib2.0-2.33.2/./glib/gtimer.c:259
#3  0xb706b0f4 in ?? () from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstxvimagesink.so
#4  0xb74fd2b3 in g_thread_proxy (data=0x8b7d200) at /build/buildd/glib2.0-2.33.2/./glib/gthread.c:801
#5  0xb747dd4c in start_thread (arg=0xb6cf6b40) at pthread_create.c:308
#6  0xb73bcace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb62a9b40 (LWP 17001)):
#0  0xb76fb424 in __kernel_vsyscall ()
#1  0xb74851f6 in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#2  0xb74fec2e in g_usleep (microseconds=microseconds@entry=1000000) at /build/buildd/glib2.0-2.33.2/./glib/gtimer.c:259
#3  0x0804c634 in fault_spin () at gst-launch.c:148
#4  fault_handler_sigaction (signum=11, si=0xb62a84bc, misc=0xb62a853c) at gst-launch.c:129
#5  <signal handler called>
#6  __memcpy_ssse3_rep () at ../sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S:303
#7  0xb6f21f8f in gst_video_frame_copy_plane () from /usr/lib/i386-linux-gnu/libgstvideo-1.0.so.0
#8  0xb6f2208f in gst_video_frame_copy () from /usr/lib/i386-linux-gnu/libgstvideo-1.0.so.0
#9  0xb7068194 in ?? () from /usr/lib/i386-linux-gnu/gstreamer-1.0/libgstxvimagesink.so
#10 0xb6f2248f in ?? () from /usr/lib/i386-linux-gnu/libgstvideo-1.0.so.0
#11 0xb6f9aefa in gst_base_sink_do_preroll (sink=sink@entry=0x8b7da90, obj=obj@entry=0x8b97ea0) at gstbasesink.c:2157
#12 0xb6f9c36b in gst_base_sink_do_sync (basesink=basesink@entry=0x8b7da90, obj=obj@entry=0x8b97ea0, late=late@entry=0xb62a8ef8,
    step_end=step_end@entry=0xb62a8efc) at gstbasesink.c:2375
#13 0xb6f9f3c6 in gst_base_sink_chain_unlocked (basesink=basesink@entry=0x8b7da90, obj=obj@entry=0x8b97ea0, is_list=is_list@entry=0,
    pad=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gstbasesink.c:3172
#14 0xb6fa1b68 in gst_base_sink_chain_main (basesink=0x8b7da90, pad=<optimized out>, obj=0x8b97ea0, is_list=0) at gstbasesink.c:3306
#15 0xb7635b06 in gst_pad_chain_data_unchecked (data=0x8b97ea0, type=3069844704, pad=0x8b763a8) at gstpad.c:3529
#16 gst_pad_push_data (pad=0x8b701a8, pad@entry=0x8b97ea0, type=3069844704, type@entry=4112, data=0x8b97ea0) at gstpad.c:3744
#17 0xb763c847 in gst_pad_push (pad=0x8b97ea0, buffer=buffer@entry=0x8b97ea0) at gstpad.c:3847
#18 0xb762548c in gst_proxy_pad_chain_default (pad=pad@entry=0x8b6f150, parent=parent@entry=0x8b6e1b8, buffer=buffer@entry=0x8b97ea0)
    at gstghostpad.c:290
#19 0xb7635b06 in gst_pad_chain_data_unchecked (data=0x8b97ea0, type=3076674528, pad=0x8b6f150) at gstpad.c:3529
#20 gst_pad_push_data (pad=0x8b6f000, pad@entry=0x8b97ea0, type=3076674528, type@entry=4112, data=0x8b97ea0) at gstpad.c:3744
#21 0xb763c847 in gst_pad_push (pad=0x8b97ea0, buffer=buffer@entry=0x8b97ea0) at gstpad.c:3847
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