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inputselector: fix cached buffer leak in chain function

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gst_selector_pad_chain() was popping cached buffers out of the queue without
freeing those. Make sure we don't steal the GstBuffer as the cached buffer ref
has been passed to the pad chain function.

This can be reproduced by running the
validate.file.playback.switch_subtitle_track_while_paused.test5_mkv scenario
with Valgrind.

https://bugzilla.gnome.org/show_bug.cgi?id=747611

Signed-off-by: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
This commit is contained in:
Guillaume Desmottes 2015-04-10 12:32:27 +02:00 committed by Thiago Santos
parent 0865bc02ea
commit b15e6f4bf0
1 changed files with 6 additions and 1 deletions
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7
plugins/elements/gstinputselector.c
View file

@ -364,7 +364,8 @@ gst_selector_pad_new_cached_buffer (GstSelectorPad * selpad, GstBuffer * buffer)
static void
gst_selector_pad_free_cached_buffer (GstSelectorPadCachedBuffer * cached_buffer)
{
gst_buffer_unref (cached_buffer->buffer);
if (cached_buffer->buffer)
gst_buffer_unref (cached_buffer->buffer);
g_slice_free (GstSelectorPadCachedBuffer, cached_buffer);
}
@ -971,6 +972,10 @@ gst_selector_pad_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
gst_selector_pad_chain (pad, parent, cached_buffer->buffer);
GST_INPUT_SELECTOR_LOCK (sel);
/* We just passed the ownership of the buffer to the chain function */
cached_buffer->buffer = NULL;
gst_selector_pad_free_cached_buffer (cached_buffer);
/* we may have cleaned up the queue in the meantime because of
* old buffers */
if (!selpad->cached_buffers) {