[Bug 741723] Occasional failure to terminate a pipeline with uridecodebin on a matroska file

Tue Mar 17 04:52:45 PDT 2015

https://bugzilla.gnome.org/show_bug.cgi?id=741723

--- Comment #3 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> ---
A bit of a scary backtrace, attaching to the process as it's stuck in PLAYING.

(gdb) thread apply all bt

Thread 26 (Thread 0x7f5324c46700 (LWP 11134)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x243a0b0, mutex=<optimised out>)
at gthread-posix.c:756
#2  0x00007f532810d4ab in gst_task_func (task=0x243a050) at gsttask.c:316
#3  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#4  0x00007f5327b5e305 in g_thread_proxy (data=0x242a0a0) at gthread.c:764
#5  0x00007f53278dae9a in start_thread (arg=0x7f5324c46700) at
pthread_create.c:308
#6  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 25 (Thread 0x7f531ffff700 (LWP 11135)):
#0  0x00007f53275fbf03 in __GI___poll (fds=<optimised out>, nfds=<optimised
out>, timeout=<optimised out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f5327b3a586 in g_main_context_poll (n_fds=1, fds=0x7f53180008c0,
timeout=-1, context=0x2437c00, 
    priority=<optimised out>) at gmain.c:4028
#2  g_main_context_iterate (dispatch=1, block=<optimised out>,
context=0x2437c00, self=<optimised out>) at gmain.c:3729
#3  g_main_context_iterate (context=0x2437c00, block=<optimised out>,
dispatch=1, self=<optimised out>) at gmain.c:3671
#4  0x00007f5327b3a6a4 in g_main_context_iteration (context=0x2437c00,
may_block=1) at gmain.c:3795
#5  0x00007f5327b3a6e9 in glib_worker_main (data=<optimised out>) at
gmain.c:5541
#6  0x00007f5327b5e305 in g_thread_proxy (data=0x242a190) at gthread.c:764
#7  0x00007f53278dae9a in start_thread (arg=0x7f531ffff700) at
pthread_create.c:308
#8  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 24 (Thread 0x7f531f3aa700 (LWP 11136)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x243a650, mutex=<optimised out>)
at gthread-posix.c:756
#2  0x00007f532810d4ab in gst_task_func (task=0x243a5f0) at gsttask.c:316
#3  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#4  0x00007f5327b5e305 in g_thread_proxy (data=0x7f532004b4a0) at gthread.c:764
#5  0x00007f53278dae9a in start_thread (arg=0x7f531f3aa700) at
pthread_create.c:308
#6  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---

Thread 23 (Thread 0x7f531eba9700 (LWP 11137)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f5310017e40, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5324c6cebc in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1465
#3  0x00007f532810d2c9 in gst_task_func (task=0x243ab90) at gsttask.c:331
#4  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#5  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310013ad0) at gthread.c:764
#6  0x00007f53278dae9a in start_thread (arg=0x7f531eba9700) at
pthread_create.c:308
#7  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 22 (Thread 0x7f531df3e700 (LWP 11138)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x226c728, mutex=<optimised out>)
at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x226c770) at
gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x226c770,
item=0x7f531df3ddc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x243acb0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310013d40) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f531df3e700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 21 (Thread 0x7f531cc25700 (LWP 11139)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d078, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d0c0)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d0c0,
item=0x7f531cc24dc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x243add0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310013800) at gthread.c:764
---Type <return> to continue, or q <return> to quit---
#8  0x00007f53278dae9a in start_thread (arg=0x7f531cc25700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 20 (Thread 0x7f5307fff700 (LWP 11140)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d138, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d180)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d180,
item=0x7f5307ffedc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x243aef0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310037de0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f5307fff700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 19 (Thread 0x7f53077fe700 (LWP 11141)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d1f8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d240)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d240,
item=0x7f53077fddc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e050) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f53100380f0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f53077fe700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 18 (Thread 0x7f52fffff700 (LWP 11142)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d2b8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d300)
at gstdataqueue.c:553
---Type <return> to continue, or q <return> to quit---
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d300,
item=0x7f52ffffedc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e170) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310013f20) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52fffff700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7f5306ffd700 (LWP 11143)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d378, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d3c0)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d3c0,
item=0x7f5306ffcdc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e290) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310038190) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f5306ffd700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7f53067fc700 (LWP 11144)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d438, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d480)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d480,
item=0x7f53067fbdc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e3b0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f53100490f0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f53067fc700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---

Thread 15 (Thread 0x7f5305ffb700 (LWP 11145)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d4f8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d540)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d540,
item=0x7f5305ffadc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e4d0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f5310049140) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f5305ffb700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7f53057fa700 (LWP 11146)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d5b8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d600)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d600,
item=0x7f53057f9dc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e5f0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f53100491e0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f53057fa700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7f5304ff9700 (LWP 11147)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d678, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d6c0)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d6c0,
item=0x7f5304ff8dc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e710) at gsttask.c:331
---Type <return> to continue, or q <return> to quit---
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531005ac50) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f5304ff9700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f52ff7fe700 (LWP 11148)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f531001d738, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f531001d780)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f531001d780,
item=0x7f52ff7fddc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e830) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531005af70) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52ff7fe700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f52feffd700 (LWP 11149)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f5310051078, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f53100510c0)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f53100510c0,
item=0x7f52feffcdc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001e950) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531005b000) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52feffd700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f52fe7fc700 (LWP 11150)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
---Type <return> to continue, or q <return> to quit---
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f5310051138, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f5310051180)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f5310051180,
item=0x7f52fe7fbdc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001ea70) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531005b0a0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52fe7fc700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f52fdffb700 (LWP 11151)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f53100511f8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f5310051240)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f5310051240,
item=0x7f52fdffadc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001eb90) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531005b2d0) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52fdffb700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f52fd7fa700 (LWP 11152)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f53100512b8, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f5310051300)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f5310051300,
item=0x7f52fd7f9dc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001ecb0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531006aa30) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52fd7fa700) at
pthread_create.c:308
---Type <return> to continue, or q <return> to quit---
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f52fcff9700 (LWP 11153)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f5310051378, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f53100513c0)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f53100513c0,
item=0x7f52fcff8dc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001edd0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531006aa80) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52fcff9700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f52cbfff700 (LWP 11154)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5327b7be2f in g_cond_wait (cond=0x7f5310051438, mutex=<optimised
out>) at gthread-posix.c:756
#2  0x00007f5325589892 in _gst_data_queue_wait_non_empty (queue=0x7f5310051480)
at gstdataqueue.c:553
#3  0x00007f532558b310 in gst_data_queue_pop (queue=0x7f5310051480,
item=0x7f52cbffedc8) at gstdataqueue.c:595
#4  0x00007f5324c6c6c3 in gst_multi_queue_loop (pad=<optimised out>) at
gstmultiqueue.c:1396
#5  0x00007f532810d2c9 in gst_task_func (task=0x7f531001eef0) at gsttask.c:331
#6  0x00007f5327b5eb68 in g_thread_pool_thread_proxy (data=<optimised out>) at
gthreadpool.c:307
#7  0x00007f5327b5e305 in g_thread_proxy (data=0x7f531006ab20) at gthread.c:764
#8  0x00007f53278dae9a in start_thread (arg=0x7f52cbfff700) at
pthread_create.c:308
#9  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f52ca79f700 (LWP 11155)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f52cab9aa23 in frame_worker_thread (arg=0x7f531404a620) at
libavcodec/pthread_frame.c:133
#2  0x00007f53278dae9a in start_thread (arg=0x7f52ca79f700) at
pthread_create.c:308
#3  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
---Type <return> to continue, or q <return> to quit---
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f52c9f9e700 (LWP 11156)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f52cab9aa23 in frame_worker_thread (arg=0x7f531404a7c8) at
libavcodec/pthread_frame.c:133
#2  0x00007f53278dae9a in start_thread (arg=0x7f52c9f9e700) at
pthread_create.c:308
#3  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f52c979d700 (LWP 11157)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f52cab9aa23 in frame_worker_thread (arg=0x7f531404a970) at
libavcodec/pthread_frame.c:133
#2  0x00007f53278dae9a in start_thread (arg=0x7f52c979d700) at
pthread_create.c:308
#3  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f52c8f9c700 (LWP 11158)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f52cab9aa23 in frame_worker_thread (arg=0x7f531404ab18) at
libavcodec/pthread_frame.c:133
#2  0x00007f53278dae9a in start_thread (arg=0x7f52c8f9c700) at
pthread_create.c:308
#3  0x00007f53276078bd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f532857a700 (LWP 11133)):
#0  0x00007f53275fbf03 in __GI___poll (fds=<optimised out>, nfds=<optimised
out>, timeout=<optimised out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f5327b3a586 in g_main_context_poll (n_fds=2, fds=0x2436bc0,
timeout=-1, context=0x2437ed0, 
    priority=<optimised out>) at gmain.c:4028
#2  g_main_context_iterate (dispatch=1, block=<optimised out>,
context=0x2437ed0, self=<optimised out>) at gmain.c:3729
#3  g_main_context_iterate (context=0x2437ed0, block=<optimised out>,
dispatch=1, self=<optimised out>) at gmain.c:3671
#4  0x00007f5327b3a8fa in g_main_loop_run (loop=0x2436c70) at gmain.c:3928
#5  0x00007f53280b22a5 in gst_bus_poll (bus=0x22803a0, events=<optimised out>,
timeout=18446744073709551615)
    at gstbus.c:1142
#6  0x0000000000404027 in event_loop (pipeline=0x24280a0, blocking=1,
do_progress=0, target_state=GST_STATE_PLAYING)
---Type <return> to continue, or q <return> to quit---
    at gst-launch.c:531
#7  0x0000000000403932 in main (argc=7, argv=0x7fff49c38368) at
gst-launch.c:1112

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