[gstreamer-bugs] [Bug 453369] New: Deadlock involving repeated state changes

Tue Jul 3 05:52:56 PDT 2007

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  GStreamer | gstreamer (core) | Ver: HEAD CVS
           Summary: Deadlock involving repeated state changes
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tim at ngus.net
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.17/2.18
   GNOME milestone: Unspecified

Steps to reproduce:
1. Use a playbin to play a file with more than 1 stream.
2. Enact lots of state changes.
3. Goto 2.

See attached test program to reproduce easily.

Stack trace:
Starting program: /home/tim/tmp/gst-test file:///home/tim/Desktop/sync_s.avi
[Thread debugging using libthread_db enabled]
[New Thread -1213531600 (LWP 15586)]
0 [New Thread -1215665264 (LWP 15590)]
[New Thread -1224623216 (LWP 15591)]
[New Thread -1233171568 (LWP 15592)]
EOS
1 EOS
2 EOS
3 
Program received signal SIGINT, Interrupt.
[Switching to Thread -1213531600 (LWP 15586)]
0xffffe410 in __kernel_vsyscall ()
(gdb) thread apply all bt

Thread 4 (Thread -1233171568 (LWP 15592)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c365c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb79460e5 in gst_queue_loop (pad=0x8116278) at gstqueue.c:983
#3  0xb7ebb466 in gst_task_func (task=0xb58f59a8, tclass=0x8092218)
    at gsttask.c:192
#4  0xb7c914d8 in g_thread_pool_thread_proxy (data=0x80922a8)
    at gthreadpool.c:265
#5  0xb7c8fb7f in g_thread_create_proxy (data=0x8187698) at gthread.c:591
#6  0xb7c3231b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7bbb57e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread -1224623216 (LWP 15591)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c365c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb791073f in gst_base_sink_wait_preroll (sink=0x81141c0)
    at gstbasesink.c:1234
#3  0xb791375e in gst_base_sink_render_object (basesink=0x81141c0, 
    pad=0x8156050, obj=0xb5e20140) at gstbasesink.c:1328
#4  0xb7914ec5 in gst_base_sink_queue_object_unlocked (basesink=0x81141c0, 
---Type <return> to continue, or q <return> to quit---
    pad=0x8156050, obj=0xb5e20140, prerollable=1) at gstbasesink.c:1870
#5  0xb7915526 in gst_base_sink_chain_unlocked (basesink=0x81141c0, 
    pad=0x8156050, buf=0xb5e20140) at gstbasesink.c:2149
#6  0xb7915ade in gst_base_sink_chain (pad=0x8156050, buf=0xb5e20140)
    at gstbasesink.c:2183
#7  0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x8156050, buffer=0xb5e20140)
    at gstpad.c:3453
#8  0xb7ea16bb in gst_pad_push (pad=0x814ce38, buffer=0xb5e20140)
    at gstpad.c:3621
#9  0xb79216e5 in gst_base_transform_chain (pad=0x8116038, buffer=0xb5e20140)
    at gstbasetransform.c:1605
#10 0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x8116038, buffer=0xb5e20140)
    at gstpad.c:3453
#11 0xb7ea16bb in gst_pad_push (pad=0x817f598, buffer=0xb5e20140)
    at gstpad.c:3621
#12 0xb79216e5 in gst_base_transform_chain (pad=0x817f418, buffer=0xb5e20140)
    at gstbasetransform.c:1605
#13 0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x817f418, buffer=0xb5e20140)
    at gstpad.c:3453
#14 0xb7ea16bb in gst_pad_push (pad=0x81163f8, buffer=0xb5e20140)
    at gstpad.c:3621
#15 0xb79216e5 in gst_base_transform_chain (pad=0x814ccb8, buffer=0xb5e20140)
    at gstbasetransform.c:1605
---Type <return> to continue, or q <return> to quit---
#16 0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x814ccb8, buffer=0xb5e20140)
    at gstpad.c:3453
#17 0xb7ea16bb in gst_pad_push (pad=0x81473f8, buffer=0xb5e20140)
    at gstpad.c:3621
#18 0xb7e925da in gst_proxy_pad_do_chain (pad=0x81568e0, buffer=0xb5e20140)
    at gstghostpad.c:191
#19 0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x81568e0, buffer=0xb5e20140)
    at gstpad.c:3453
#20 0xb7ea16bb in gst_pad_push (pad=0x8145e40, buffer=0xb5e20140)
    at gstpad.c:3621
#21 0xb79465a8 in gst_queue_loop (pad=0x8145e40) at gstqueue.c:932
#22 0xb7ebb466 in gst_task_func (task=0xb561b280, tclass=0x8092218)
    at gsttask.c:192
#23 0xb7c914d8 in g_thread_pool_thread_proxy (data=0x80922a8)
    at gthreadpool.c:265
#24 0xb7c8fb7f in g_thread_create_proxy (data=0x806eb40) at gthread.c:591
#25 0xb7c3231b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#26 0xb7bbb57e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread -1215665264 (LWP 15590)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c365c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#2  0xb7947a8f in gst_queue_chain (pad=0x814c838, buffer=0xb556cca8)
    at gstqueue.c:876
#3  0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x814c838, buffer=0xb556cca8)
    at gstpad.c:3453
#4  0xb7ea16bb in gst_pad_push (pad=0x817f118, buffer=0xb556cca8)
    at gstpad.c:3621
#5  0xb7991a75 in gst_stream_selector_chain (pad=0x8116338, buf=0xb556cca8)
    at gststreamselector.c:408
#6  0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x8116338, buffer=0xb556cca8)
    at gstpad.c:3453
#7  0xb7ea16bb in gst_pad_push (pad=0x81469c0, buffer=0xb556cca8)
    at gstpad.c:3621
#8  0xb7e925da in gst_proxy_pad_do_chain (pad=0x81471a0, buffer=0xb556cca8)
    at gstghostpad.c:191
#9  0xb7ea0fd9 in gst_pad_chain_unchecked (pad=0x81471a0, buffer=0xb556cca8)
    at gstpad.c:3453
#10 0xb7ea16bb in gst_pad_push (pad=0x817f058, buffer=0xb556cca8)
    at gstpad.c:3621
#11 0xb78ea562 in gst_avi_demux_stream_data (avi=0xb5ef7800)
    at gstavidemux.c:3422
#12 0xb78ed018 in gst_avi_demux_loop (pad=0x8145b40) at gstavidemux.c:3697
#13 0xb7ebb466 in gst_task_func (task=0x8128d90, tclass=0x8092218)
    at gsttask.c:192
---Type <return> to continue, or q <return> to quit---
#14 0xb7c914d8 in g_thread_pool_thread_proxy (data=0x80922a8)
    at gthreadpool.c:265
#15 0xb7c8fb7f in g_thread_create_proxy (data=0x8092cd8) at gthread.c:591
#16 0xb7c3231b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#17 0xb7bbb57e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread -1213531600 (LWP 15586)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7c365c6 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7e011c1 in g_cond_timed_wait_posix_impl (cond=0xb58f6ba8, 
    entered_mutex=0x0, abs_time=0x3) at gthread-posix.c:231
#3  0xb7e8c523 in gst_element_get_state_func (element=0x81631d0, state=0x0, 
    pending=0x0, timeout=18446744073709551615) at gstelement.c:1877
#4  0xb7e773f9 in gst_bin_get_state_func (element=0x81631d0, state=0x0, 
    pending=0x0, timeout=18446744073709551615) at gstbin.c:1517
#5  0xb7e88604 in gst_element_get_state (element=0x81631d0, state=0x0, 
    pending=0x0, timeout=18446744073709551615) at gstelement.c:1980
#6  0x08048bf3 in main (argc=2, argv=0xbfb1a4c4) at gst-test.c:77
(gdb) 

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