[gstreamer-bugs] [Bug 578494] decodebin being racy when decoding ogg/vorbis and flac files

Sat Apr 11 04:45:51 PDT 2009

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  GStreamer | don't know | Ver: 0.10.22

------- Comment #3 from Philippe Normand  2009-04-11 11:47 UTC -------
gist-bisect pointed out
http://cgit.freedesktop.org/gstreamer/gst-plugins-good/commit/?id=a53866ddc1bec3ebccc13dedfaefb6a94b1d381f
as being the one triggering the bug, reverting it partially fixes the issue.

Now with both flac and ogg files I get a deadlock (this one is with flac):

Thread 3 (Thread 0xb743cb90 (LWP 6457)):
#0  0xb7f69430 in __kernel_vsyscall ()
#1  0xb7f3fcf9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7f3b129 in _L_lock_89 () from /lib/tls/i686/cmov/libpthread.so.0
#3  0xb7f3aa32 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb7bca701 in IA__g_static_rec_mutex_lock (mutex=0x9718ce8) at
/build/buildd/glib2.0-2.20.1/glib/gthread.c:313
#5  0xb76f0065 in gst_pad_get_range (pad=0x97181c0, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4287
#6  0xb76f078d in gst_pad_pull_range (pad=0x9718040, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4434
#7  0xb753cd39 in gst_type_find_element_getrange (srcpad=0x9718100, offset=0,
length=8192, buffer=0xb743c158) at gsttypefindelement.c:782
#8  0xb76f01a5 in gst_pad_get_range (pad=0x9718100, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4304
#9  0xb76f078d in gst_pad_pull_range (pad=0x9834800, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4434
#10 0xb76e02e2 in gst_proxy_pad_do_getrange (pad=0x9835070, offset=0,
size=8192, buffer=0xb743c158) at gstghostpad.c:205
#11 0xb76f01a5 in gst_pad_get_range (pad=0x9835070, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4304
#12 0xb76f078d in gst_pad_pull_range (pad=0x9718280, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4434
#13 0xb753cd39 in gst_type_find_element_getrange (srcpad=0x9718340, offset=0,
length=8192, buffer=0xb743c158) at gsttypefindelement.c:782
#14 0xb76f01a5 in gst_pad_get_range (pad=0x9718340, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4304
#15 0xb76f078d in gst_pad_pull_range (pad=0x9718400, offset=0, size=8192,
buffer=0xb743c158) at gstpad.c:4434
#16 0xb74e84d2 in gst_flac_dec_read_seekable (decoder=0x9853090,
buffer=0x98556d8 "", bytes=0xb743c1c8, client_data=0x9852010) at
gstflacdec.c:777
#17 0xb7479bf6 in ?? () from /usr/lib/libFLAC.so.8
#18 0xb744cc69 in bitreader_read_from_client_ () from /usr/lib/libFLAC.so.8
#19 0xb744ceb5 in FLAC__bitreader_read_raw_uint32 () from /usr/lib/libFLAC.so.8
#20 0xb747bc28 in ?? () from /usr/lib/libFLAC.so.8
#21 0xb747eeef in FLAC__stream_decoder_process_single () from
/usr/lib/libFLAC.so.8
#22 0xb74e68f2 in gst_flac_dec_loop (sinkpad=0x9718400) at gstflacdec.c:1069
#23 0xb77142d3 in gst_task_func (task=0x9834070, tclass=0x96d1638) at
gsttask.c:172
#24 0xb7bcbe26 in g_thread_pool_thread_proxy (data=0x96d16c8) at
/build/buildd/glib2.0-2.20.1/glib/gthreadpool.c:265
#25 0xb7bca7bf in g_thread_create_proxy (data=0x9853140) at
/build/buildd/glib2.0-2.20.1/glib/gthread.c:635
#26 0xb7f394ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#27 0xb7e6f49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb6c3bb90 (LWP 6458)):
#0  0xb7f69430 in __kernel_vsyscall ()
#1  0xb7f3fcf9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7f3b129 in _L_lock_89 () from /lib/tls/i686/cmov/libpthread.so.0
#3  0xb7f3aa32 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb7bca701 in IA__g_static_rec_mutex_lock (mutex=0x96f8f18) at
/build/buildd/glib2.0-2.20.1/glib/gthread.c:313
#5  0xb76f6933 in gst_pad_send_event (pad=0x9718400, event=0x96b3028) at
gstpad.c:4708
#6  0xb76f7005 in gst_pad_push_event (pad=0x9718340, event=0x96b3028) at
gstpad.c:4577
#7  0xb753d326 in gst_type_find_element_handle_event (pad=0x9718280,
event=0x96b3028) at gsttypefindelement.c:550
#8  0xb76f68ac in gst_pad_send_event (pad=0x9718280, event=0x96b3028) at
gstpad.c:4721
#9  0xb76f7005 in gst_pad_push_event (pad=0x9835070, event=0x96b3028) at
gstpad.c:4577
#10 0xb76e242d in gst_proxy_pad_do_event (pad=0x9834800, event=0x96b3028) at
gstghostpad.c:128
#11 0xb76f68ac in gst_pad_send_event (pad=0x9834800, event=0x96b3028) at
gstpad.c:4721
#12 0xb76f7005 in gst_pad_push_event (pad=0x9718100, event=0x96b3028) at
gstpad.c:4577
#13 0xb753d326 in gst_type_find_element_handle_event (pad=0x9718040,
event=0x96b3028) at gsttypefindelement.c:550
#14 0xb76f68ac in gst_pad_send_event (pad=0x9718040, event=0x96b3028) at
gstpad.c:4721
#15 0xb76f7005 in gst_pad_push_event (pad=0x97181c0, event=0x96b3028) at
gstpad.c:4577
#16 0xb7772e4f in gst_base_src_loop (pad=0x97181c0) at gstbasesrc.c:2203
#17 0xb77142d3 in gst_task_func (task=0x9834020, tclass=0x96d1638) at
gsttask.c:172
#18 0xb7bcbe26 in g_thread_pool_thread_proxy (data=0x96d16c8) at
/build/buildd/glib2.0-2.20.1/glib/gthreadpool.c:265
#19 0xb7bca7bf in g_thread_create_proxy (data=0x97d97f8) at
/build/buildd/glib2.0-2.20.1/glib/gthread.c:635
#20 0xb7f394ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#21 0xb7e6f49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7d896c0 (LWP 6455)):
#0  0xb7f69430 in __kernel_vsyscall ()
#1  0xb7e64ae7 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7bb074b in IA__g_poll (fds=0x9853168, nfds=2, timeout=-1) at
/build/buildd/glib2.0-2.20.1/glib/gpoll.c:127
#3  0xb7ba2f82 in g_main_context_iterate (context=0x9814e60, block=1,
dispatch=1, self=0x96a1dd8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2761
#4  0xb7ba35ba in IA__g_main_loop_run (loop=0x96d5378) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:2656
#5  0xb7f5ee44 in ?? () from
/var/lib/python-support/python2.6/gtk-2.0/glib/_glib.so
#6  0x080de7dc in PyEval_EvalFrameEx ()
#7  0x080e00b8 in PyEval_EvalCodeEx ()
---Type <return> to continue, or q <return> to quit---
#8  0x080e0217 in PyEval_EvalCode ()
#9  0x080fe0e1 in PyRun_FileExFlags ()
#10 0x080fe43a in PyRun_SimpleFileExFlags ()
#11 0x0805c882 in Py_Main ()
#12 0x0805b972 in main ()
#0  0xb7f69430 in __kernel_vsyscall ()

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