[gstreamer-bugs] [Bug 440463] New: gstbin unit test sometimes hangs waiting for ASYNC_DONE message

Tue May 22 07:42:34 PDT 2007

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  GStreamer | gstreamer (core) | Ver: HEAD CVS
           Summary: gstbin unit test sometimes hangs waiting for ASYNC_DONE
                    message
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.sourceforge.net
                CC: thaytan at mad.scientist.com
     GNOME version: Unspecified
   GNOME milestone: Unspecified

Running make gst/gstbin.forever I regularly get hangs in the gst/gstbin unit
test. This is not always the same test it seems. Sometimes it spins without
using cpu, sometimes it hangs using 100% cpu.

Here's a stack trace:

(gdb) thread apply all bt

Thread 2 (Thread 1082104720 (LWP 31846)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0x401ca5c6 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/tls/i686/cmov/libpthread.so.0
#2  0x405bb57f in gst_base_sink_wait_preroll (sink=0x8082148) at
gstbasesink.c:1240
#3  0x405be59e in gst_base_sink_render_object (basesink=0x8082148,
pad=0x80800e0, obj=0x8081280) at gstbasesink.c:1334
#4  0x405bfd05 in gst_base_sink_queue_object_unlocked (basesink=0x8082148,
pad=0x80800e0, obj=0x8081280, prerollable=1) at gstbasesink.c:1874
#5  0x405c0366 in gst_base_sink_chain_unlocked (basesink=0x8082148,
pad=0x80800e0, buf=0x8081280) at gstbasesink.c:2152
#6  0x405c091e in gst_base_sink_chain (pad=0x80800e0, buf=0x8081280) at
gstbasesink.c:2186
#7  0x400710a9 in gst_pad_chain_unchecked (pad=0x80800e0, buffer=0x8081280) at
gstpad.c:3451
#8  0x4007178b in gst_pad_push (pad=0x8080020, buffer=0x8081280) at
gstpad.c:3617
#9  0x405c7642 in gst_base_src_loop (pad=0x8080020) at gstbasesrc.c:1770
#10 0x4008af66 in gst_task_func (task=0x8080c20, tclass=0x8080908) at
gsttask.c:192
#11 0x401794d8 in g_thread_pool_thread_proxy (data=0x8080998) at
gthreadpool.c:265
#12 0x40177b7f in g_thread_create_proxy (data=0x8080a10) at gthread.c:591
#13 0x401c631b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#14 0x402a757e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 1078406624 (LWP 31845)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0x4029d893 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x4015ce03 in g_main_context_iterate (context=0x8070858, block=1,
dispatch=1, self=0x80541b8) at gmain.c:2979
#3  0x4015d179 in IA__g_main_loop_run (loop=0x807ed48) at gmain.c:2881
#4  0x4004f429 in gst_bus_poll (bus=0x806f860, events=GST_MESSAGE_ASYNC_DONE,
timeout=-1) at gstbus.c:935
#5  0x0804a009 in pop_async_done (bus=0x806f860) at gst/gstbin.c:31
#6  0x0804af15 in test_message_state_changed_children (__i__=0) at
gst/gstbin.c:309
#7  0x40025dc7 in srunner_run_all () from
/home/tpm/uninstalled/head/gstreamer/libs/gst/check/.libs/libgstcheck-0.10.so.0
#8  0x400219fa in gst_check_run_suite (suite=0x8054008, name=0x805050a
"gst_bin", fname=0x80504fd "gst/gstbin.c") at gstcheck.c:325
#9  0x080495a9 in main (argc=1, argv=0xbf8fe8b4) at gst/gstbin.c:858
#0  0xffffe410 in __kernel_vsyscall ()

Here's another one:

(gdb) thread apply all bt

Thread 2 (Thread 1082104720 (LWP 12489)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0x401ca5c6 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/tls/i686/cmov/libpthread.so.0
#2  0x4008b091 in gst_task_func (task=0x8084018, tclass=0x8080ee0) at
gsttask.c:180
#3  0x401794d8 in g_thread_pool_thread_proxy (data=0x8080f70) at
gthreadpool.c:265
#4  0x40177b7f in g_thread_create_proxy (data=0x8084838) at gthread.c:591
#5  0x401c631b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x402a757e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 1078406624 (LWP 12488)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0x4029d893 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x4015ce03 in g_main_context_iterate (context=0x8071e10, block=1,
dispatch=1, self=0x80541b8) at gmain.c:2979
#3  0x4015d179 in IA__g_main_loop_run (loop=0x80855f0) at gmain.c:2881
#4  0x4004f429 in gst_bus_poll (bus=0x806f860, events=GST_MESSAGE_ASYNC_DONE,
timeout=-1) at gstbus.c:935
#5  0x0804a009 in pop_async_done (bus=0x806f860) at gst/gstbin.c:31
#6  0x0804e218 in test_children_state_change_order_flagged_sink (__i__=0) at
gst/gstbin.c:590
#7  0x40025dc7 in srunner_run_all () from
/home/tpm/uninstalled/head/gstreamer/libs/gst/check/.libs/libgstcheck-0.10.so.0
#8  0x400219fa in gst_check_run_suite (suite=0x8054008, name=0x805050a
"gst_bin", fname=0x80504fd "gst/gstbin.c") at gstcheck.c:325
#9  0x080495a9 in main (argc=1, argv=0xbf9f31b4) at gst/gstbin.c:858
#0  0xffffe410 in __kernel_vsyscall ()

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