<div dir="ltr">Hi Sebastian,<div>Thanks for your input. Finally I figured out this memory leak and fixed it. Issue was in my code as you pointed out.</div><div>I missed to unref a pad template at one place which I got with API gst_pad_get_pad_template(pad). Thanks a lot for help.</div><div> </div><div>Thanks & Regards,</div><div>Sanjay <div class="gmail_extra"> <div class="gmail_quote">On Sat, Sep 10, 2016 at 1:46 PM, Sebastian Dröge <<a href="mailto:sebastian@centricular.com" target="_blank">sebastian@centricular.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Thu, 2016-09-08 at 13:03 +0530, Sanjay Gupta wrote: > > ==424== 4 bytes in 1 blocks are still reachable in loss record 126 of > 7,797 > ==424== at 0x482F654: malloc (vg_replace_malloc.c:296) > ==424== by 0x4C55EA0: g_malloc (gmem.c:97) > ==424== by 0x4C6EA54: g_memdup (gstrfuncs.c:384) > ==424== by 0x4FBACDC: g_signal_newv (gsignal.c:1661) > ==424== by 0x4FBB2D8: g_signal_new_valist (gsignal.c:1831) > ==424== by 0x4FBB3CC: g_signal_new (gsignal.c:1373) > ==424== by 0x4B25C70: gst_pad_template_class_init > (gstpadtemplate.c:146) > ==424== by 0x4B25C70: gst_pad_template_class_intern_init > (gstpadtemplate.c:127) > ==424== by 0x4FC2E98: type_class_init_Wm (gtype.c:2236) > ==424== by 0x4FC2E98: g_type_class_ref (gtype.c:2951) > ==424== by 0x4FAD0D0: g_object_new_valist (gobject.c:1959) > ==424== by 0x4FAD5AC: g_object_new (gobject.c:1617) > ==424== by 0x4B26438: gst_static_pad_template_get > (gstpadtemplate.c:281) > ==424== by 0x8083814: gst_otv_ssm_playback_class_init > (gstssmplayback.c:3895) This is not a memory leak in the traditional sense but a one-time allocation that is never freed because it exists forever. It's per- class data. > ==441== 4,377 (36 direct, 4,341 indirect) bytes in 3 blocks are > definitely lost in loss record 8,528 of 8,612 > ==441== at 0x482F654: malloc (vg_replace_malloc.c:296) > ==441== by 0x4C5AE90: g_malloc (gmem.c:97) > ==441== by 0x4C71AE8: g_slice_alloc (gslice.c:1009) > ==441== by 0x4C4F49C: g_list_append (glist.c:261) > ==441== by 0x4B00150: gst_element_add_pad (gstelement.c:698) > ==441== by 0x13E09CD0: gst_ssm_playback_init > (gstotvssmplayback.c:4165) This is a real leak, but other than you guess it is not the pad that is leaked here but the element with the pad. gst_element_add_pad() is adding the pad to a list inside the pad, adding a list node causes the allocation above and the list is never freed. It would be freed in GstElement's dispose(). So somewhere there is a leak of your element. Also you don't have to remove the pad in dispose() yourself, GstElement already does that for you. You only have to remove pads if they are to be removed at an earlier time. > ==441== 18,967 (4,004 direct, 14,963 indirect) bytes in 13 blocks are > definitely lost in loss record 8,569 of 8,612 > ==441== at 0x4FC9B0C: g_type_create_instance (gtype.c:1848) > ==441== by 0x4FAFF7C: g_object_new_internal (gobject.c:1774) > ==441== by 0x4FB2230: g_object_new_valist (gobject.c:2033) > ==441== by 0x4FB258C: g_object_new (gobject.c:1617) > ==441== by 0x4B20C34: gst_pad_new_from_template (gstpad.c:857) > ==441== by 0x4B20C8C: gst_pad_new_from_static_template (gstpad.c:882) > ==441== by 0x13E09C04: gst_ssm_playback_init > (gstotvssmplayback.c:4155) This is the actual pad being leaked. So in summary, something outside your element or in the code that you didn't show is not doing the reference counting with the pad and element correctly. The whole element and the pad are leaked, but not because of anything in the code you showed. -- Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" rel="noreferrer" target="_blank">http://www.centricular.com</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div> </div></div></div>