Firefox 33.0 crashes when trying to play video using VAAPI VDPAU backend

Hello,

I am trying to get VDPAU to work with Firefox using the GStreamer VAAPI VDPAU backend. The videos play correctly but if I try to seek or replay a video, Firefox crashes. The crash is in libvdpau_nvidia.so.

Steps to reproduce:

  1. export LIBVA_DRIVER_NAME=vdpau
  2. export VDPAU_DRIVER=nvidia
  3. firefox
  4. play any youtube video and try to seek
  5. crash

Software versions:
ArchLinux distro:
linux-ck 3.16.6
nvidia-ck 343.22
nvidia-utils 343.22
firefox 33.0
gstreamer 1.4.3
gst-vaapi 0.5.9
libva-vdpau-driver 0.7.4

I also have a backtrace from firefox:

#0  0x00007f7bd32a31d9 in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
(gdb) bt
#0  0x00007f7bd32a31d9 in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#1  0x00007f7bd32a3692 in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#2  0x00007f7bd32cc08a in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#3  0x00007f7bd32dfe64 in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#4  0x00007f7bd32bc5be in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#5  0x00007f7bd32aac91 in ?? () from /usr/lib/vdpau/libvdpau_nvidia.so.1
#6  0x00007f7bd37536d0 in vdpau_DestroyContext () from /usr/lib/dri/vdpau_drv_video.so
#7  0x00007f7bd418ad15 in context_destroy () from /usr/lib/libgstvaapi-1.4.so.0
#8  0x00007f7bd418ae69 in gst_vaapi_context_finalize () from /usr/lib/libgstvaapi-1.4.so.0
#9  0x00007f7bd41a19e2 in gst_vaapi_object_finalize () from /usr/lib/libgstvaapi-1.4.so.0
#10 0x00007f7bd41a191f in gst_vaapi_mini_object_unref () from /usr/lib/libgstvaapi-1.4.so.0
#11 0x00007f7bd418c204 in gst_vaapi_decoder_finalize () from /usr/lib/libgstvaapi-1.4.so.0
#12 0x00007f7bd41a191f in gst_vaapi_mini_object_unref () from /usr/lib/libgstvaapi-1.4.so.0
#13 0x00007f7bd524e4ae in gst_vaapidecode_destroy () from /usr/lib/gstreamer-1.0/libgstvaapi.so
#14 0x00007f7bd524e560 in gst_vaapidecode_reset_full () from /usr/lib/gstreamer-1.0/libgstvaapi.so
#15 0x00007f7bd96564a1 in ?? () from /usr/lib/libgstvideo-1.0.so.0
#16 0x00007f7bd965e4a8 in ?? () from /usr/lib/libgstvideo-1.0.so.0
#17 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895d1c0, event=0x7f7bd0e89ab0, type=3919655312) at gstpad.c:5141
#18 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895cf90, event=0x1, type=320) at gstpad.c:4839
#19 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895cf90, event=0x7f7bd0e89ab0) at gstpad.c:4964
#20 0x00007f7bd98ba8f6 in gst_base_transform_sink_eventfunc (trans=0x7f7bda96ba10, event=0x7f7bd0e89ab0) at gstbasetransform.c:1902
#21 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895cd60, event=0x7f7bd0e89ab0, type=3667311120) at gstpad.c:5141
#22 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895cb30, event=0x1, type=320) at gstpad.c:4839
#23 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895cb30, event=0x7f7bd0e89ab0) at gstpad.c:4964
---Type <return> to continue, or q <return> to quit---
#24 0x00007f7bd989d7ac in gst_base_parse_sink_event_default (parse=0x7f7bd8985230, event=0x7f7bd0e89ab0) at gstbaseparse.c:1230
#25 0x00007f7bd56af163 in ?? () from /usr/lib/gstreamer-1.0/libgstvideoparsersbad.so
#26 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895c900, event=0x7f7bd0e89ab0, type=3633861168) at gstpad.c:5141
#27 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91ccb90, event=0x1, type=320) at gstpad.c:4839
#28 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91ccb90, event=0x7f7bd0e89ab0) at gstpad.c:4964
#29 0x00007f7bd98ba8f6 in gst_base_transform_sink_eventfunc (trans=0x7f7bda96ad90, event=0x7f7bd0e89ab0) at gstbasetransform.c:1902
#30 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91cc960, event=0x7f7bd0e89ab0, type=3667307920) at gstpad.c:5141
#31 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91cc730, event=0x1, type=320) at gstpad.c:4839
#32 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91cc730, event=0x7f7bd0e89ab0) at gstpad.c:4964
#33 0x00007f7bd989d7ac in gst_base_parse_sink_event_default (parse=0x7f7bd8bc3230, event=0x7f7bd0e89ab0) at gstbaseparse.c:1230
#34 0x00007f7bd6740d86 in gst_h264_parse_event () from /usr/lib/gstreamer-1.0/libgstvaapi_parse.so
#35 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91cc500, event=0x7f7bd0e89ab0, type=3636212272) at gstpad.c:5141
#36 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91cc2d0, event=0x1, type=320) at gstpad.c:4839
#37 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91cc2d0, event=0x7f7bd0e89ab0) at gstpad.c:4964
#38 0x00007f7bd7223992 in gst_multi_queue_sink_event (pad=0xc1d00ce1, parent=0x7f7c0005f6a0, event=0x7f7bd0e89ab0) at gstmultiqueue.c:1692
#39 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91cc0a0, event=0x7f7bd0e89ab0, type=390816) at gstpad.c:5141
#40 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda957db0, event=0x1, type=320) at gstpad.c:4839
#41 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda957db0, event=0x7f7bd0e89ab0) at gstpad.c:4964
#42 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda957db0, data=0x7f7bee158af0) at gstpad.c:2842
#43 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda957b80, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#44 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bd0e89ab0) at gstpad.c:2893
#45 0x00007f7bd6dca7b2 in ?? () from /usr/lib/gstreamer-1.0/libgstisomp4.so
#46 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda957b80, event=0x7f7bd0e89ab0, type=3642531968) at gstpad.c:5141
#47 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda957720, event=0x1, type=320) at gstpad.c:4839
---Type <return> to continue, or q <return> to quit---
#48 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda957720, event=0x7f7bd0e89ab0) at gstpad.c:4964
#49 0x00007f7bd7237a9f in gst_type_find_element_sink_event (pad=0xc1d00ce1, parent=0x7f7bda908080, event=0x7f7bd0e89ab0) at gsttypefindelement.c:694
#50 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9574f0, event=0x7f7bd0e89ab0, type=3666903168) at gstpad.c:5141
#51 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda976960, event=0x1, type=320) at gstpad.c:4839
#52 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda976960, event=0x7f7bd0e89ab0) at gstpad.c:4964
#53 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda976960, data=0x7f7bee158ff0) at gstpad.c:2842
#54 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda974ef0, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#55 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bd0e89ab0) at gstpad.c:2893
#56 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda974ef0, event=0x7f7bd0e89ab0, type=3667348592) at gstpad.c:5141
#57 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9572c0, event=0x1, type=320) at gstpad.c:4839
#58 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9572c0, event=0x7f7bd0e89ab0) at gstpad.c:4964
#59 0x00007f7bd98af161 in gst_base_src_perform_seek (src=0x7f7be6f9b1b0, event=0x1, unlock=-790062416) at gstbasesrc.c:1670
#60 0x00007f7bd98af760 in gst_base_src_default_event (src=0x7f7be6f9b1b0, event=0x7f7bd0e89710) at gstbasesrc.c:1979
#61 0x00007f7bd98ad7c1 in gst_base_src_event (pad=0xc1d00ce1, parent=0x7f7be6f9b1b0, event=0x7f7bd0e89710) at gstbasesrc.c:2031
#62 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9572c0, event=0x7f7bd0e89710, type=3875123632) at gstpad.c:5141
#63 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda974ef0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#64 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda974ef0, event=0x7f7bd0e89710) at gstpad.c:4964
#65 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda974ef0, data=0x7f7bee159560) at gstpad.c:2842
#66 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda976960, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#67 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bd0e89710) at gstpad.c:2893
#68 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda976960, event=0x7f7bd0e89710, type=3667349232) at gstpad.c:5141
#69 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9574f0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#70 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9574f0, event=0x7f7bd0e89710) at gstpad.c:4964
#71 0x00007f7bd7237321 in gst_type_find_element_src_event (pad=0xc1d00ce1, parent=0x7f7bda908080, event=0x7f7bda701478) at gsttypefindelement.c:519
---Type <return> to continue, or q <return> to quit---
#72 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda957720, event=0x7f7bd0e89710, type=3666903168) at gstpad.c:5141
#73 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda957b80, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#74 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda957b80, event=0x7f7bd0e89710) at gstpad.c:4964
#75 0x00007f7bd6dbc67a in ?? () from /usr/lib/gstreamer-1.0/libgstisomp4.so
#76 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda957db0, event=0x7f7bc8e899e0, type=3642531968) at gstpad.c:5141
#77 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91cc0a0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#78 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91cc0a0, event=0x7f7bc8e899e0) at gstpad.c:4964
#79 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91cc2d0, event=0x7f7bc8e899e0, type=390816) at gstpad.c:5141
#80 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91cc500, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#81 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91cc500, event=0x7f7bc8e899e0) at gstpad.c:4964
#82 0x00007f7bd9899039 in gst_base_parse_handle_seek (event=<optimized out>, parse=<optimized out>) at gstbaseparse.c:4123
#83 gst_base_parse_src_event_default (parse=0x7f7bd8bc3230, event=0x7f7bc8e899e0) at gstbaseparse.c:1401
#84 0x00007f7bd6740b6c in gst_h264_parse_src_event () from /usr/lib/gstreamer-1.0/libgstvaapi_parse.so
#85 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91cc730, event=0x7f7bc8e899e0, type=3636212272) at gstpad.c:5141
#86 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd91cc960, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#87 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd91cc960, event=0x7f7bc8e899e0) at gstpad.c:4964
#88 0x00007f7bd98baedd in gst_base_transform_src_eventfunc (trans=0x7f7bda96ad90, event=0x7f7bc8e899e0) at gstbasetransform.c:1954
#89 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd91ccb90, event=0x7f7bc8e899e0, type=3667307920) at gstpad.c:5141
#90 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895c900, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#91 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895c900, event=0x7f7bc8e899e0) at gstpad.c:4964
#92 0x00007f7bd9899039 in gst_base_parse_handle_seek (event=<optimized out>, parse=<optimized out>) at gstbaseparse.c:4123
#93 gst_base_parse_src_event_default (parse=0x7f7bd8985230, event=0x7f7bc8e899e0) at gstbaseparse.c:1401
#94 0x00007f7bd56b092c in ?? () from /usr/lib/gstreamer-1.0/libgstvideoparsersbad.so
#95 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895cb30, event=0x7f7bc8e899e0, type=3633861168) at gstpad.c:5141
---Type <return> to continue, or q <return> to quit---
#96 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895cd60, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#97 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895cd60, event=0x7f7bc8e899e0) at gstpad.c:4964
#98 0x00007f7bd98baedd in gst_base_transform_src_eventfunc (trans=0x7f7bda96ba10, event=0x7f7bc8e899e0) at gstbasetransform.c:1954
#99 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895cf90, event=0x7f7bc8e899e0, type=3667311120) at gstpad.c:5141
#100 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895d1c0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#101 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895d1c0, event=0x7f7bc8e899e0) at gstpad.c:4964
#102 0x00007f7bd965b39f in ?? () from /usr/lib/libgstvideo-1.0.so.0
#103 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895d3f0, event=0x7f7bc8e899e0, type=3919655312) at gstpad.c:5141
#104 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9774a0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#105 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9774a0, event=0x7f7bc8e899e0) at gstpad.c:4964
#106 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda9774a0, data=0x7f7bee15ab60) at gstpad.c:2842
#107 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda90c3b0, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#108 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#109 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda90c3b0, event=0x7f7bc8e899e0, type=3667348592) at gstpad.c:5141
#110 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda977b60, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#111 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda977b60, event=0x7f7bc8e899e0) at gstpad.c:4964
#112 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda977b60, data=0x7f7bee15adc0) at gstpad.c:2842
#113 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda9753b0, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#114 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#115 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9753b0, event=0x7f7bc8e899e0, type=3667347984) at gstpad.c:5141
#116 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7be177e040, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#117 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7be177e040, event=0x7f7bc8e899e0) at gstpad.c:4964
#118 0x00007f7bd721ad53 in gst_input_selector_event (pad=0x7f7bd895d620, parent=0x1, event=0x7f7bc8e899e0) at gstinputselector.c:1527
#119 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd895d620, event=0x7f7bc8e899e0, type=161142752) at gstpad.c:5141
---Type <return> to continue, or q <return> to quit---
#120 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda975ad0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#121 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda975ad0, event=0x7f7bc8e899e0) at gstpad.c:4964
#122 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda975ad0, data=0x7f7bee15b210) at gstpad.c:2842
#123 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bd885c270, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#124 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#125 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd885c270, event=0x7f7bc8e899e0, type=3667352272) at gstpad.c:5141
#126 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9b1420, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#127 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9b1420, event=0x7f7bc8e899e0) at gstpad.c:4964
#128 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda9b1420, data=0x7f7bee15b470) at gstpad.c:2842
#129 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda9b1650, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#130 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#131 0x00007f7be40e6cc2 in ?? () from /usr/lib/gstreamer-1.0/libgstplayback.so
#132 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9b1650, event=0x7f7bc8e899e0, type=3719061680) at gstpad.c:5141
#133 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9b2380, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#134 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9b2380, event=0x7f7bc8e899e0) at gstpad.c:4964
#135 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda9b2380, data=0x7f7bee15b750) at gstpad.c:2842
#136 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bd885c930, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#137 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#138 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd885c930, event=0x7f7bc8e899e0, type=3667600256) at gstpad.c:5141
#139 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd895dcb0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#140 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd895dcb0, event=0x7f7bc8e899e0) at gstpad.c:4964
#141 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bd895dcb0, data=0x7f7bee15b9b0) at gstpad.c:2842
#142 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda9b0070, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#143 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
---Type <return> to continue, or q <return> to quit---
#144 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9b0070, event=0x7f7bc8e899e0, type=3667550640) at gstpad.c:5141
#145 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda975d30, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#146 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda975d30, event=0x7f7bc8e899e0) at gstpad.c:4964
#147 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda975d30, data=0x7f7bee15bc10) at gstpad.c:2842
#148 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bd885c4b0, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#149 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#150 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bd885c4b0, event=0x7f7bc8e899e0, type=3667352880) at gstpad.c:5141
#151 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9b0b60, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#152 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9b0b60, event=0x7f7bc8e899e0) at gstpad.c:4964
#153 0x00007f7bd98baedd in gst_base_transform_src_eventfunc (trans=0x7f7be17928d0, event=0x7f7bc8e899e0) at gstbasetransform.c:1954
#154 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9b0d90, event=0x7f7bc8e899e0, type=3782813904) at gstpad.c:5141
#155 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9b0fc0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#156 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9b0fc0, event=0x7f7bc8e899e0) at gstpad.c:4964
#157 0x00007f7bd98baedd in gst_base_transform_src_eventfunc (trans=0x7f7be178e0d0, event=0x7f7bc8e899e0) at gstbasetransform.c:1954
#158 0x00007f7bd27c6e91 in ?? () from /usr/lib/gstreamer-1.0/libgstvideoscale.so
#159 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9b11f0, event=0x7f7bc8e899e0, type=3782795472) at gstpad.c:5141
#160 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bd885c6f0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#161 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bd885c6f0, event=0x7f7bc8e899e0) at gstpad.c:4964
#162 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bd885c6f0, data=0x7f7bee15c250) at gstpad.c:2842
#163 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda9b2120, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#164 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#165 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9b2120, event=0x7f7bc8e899e0, type=3667558736) at gstpad.c:5141
#166 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9740b0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#167 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9740b0, event=0x7f7bc8e899e0) at gstpad.c:4964
---Type <return> to continue, or q <return> to quit---
#168 0x00007f7bd9d5cd23 in event_forward_func (pad=0x7f7bda9740b0, data=0x7f7bee15c4b0) at gstpad.c:2842
#169 0x00007f7bd9d59bee in gst_pad_forward (pad=0x7f7bda976060, forward=0x1, user_data=0xc1d00ce1) at gstpad.c:2796
#170 0x00007f7bd9d59d1b in gst_pad_event_default (pad=0x1, parent=0x1, event=0x7f7bc8e899e0) at gstpad.c:2893
#171 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda976060, event=0x7f7bc8e899e0, type=3667345584) at gstpad.c:5141
#172 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda956370, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#173 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda956370, event=0x7f7bc8e899e0) at gstpad.c:4964
#174 0x00007f7bd98baedd in gst_base_transform_src_eventfunc (trans=0x7f7bda96a110, event=0x7f7bc8e899e0) at gstbasetransform.c:1954
#175 0x00007f7bd9d53907 in gst_pad_send_event_unchecked (pad=0x7f7bda9565a0, event=0x7f7bc8e899e0, type=3667304720) at gstpad.c:5141
#176 0x00007f7bd9d541c0 in gst_pad_push_event_unchecked (pad=0x7f7bda9567d0, event=0x1, type=GST_PAD_PROBE_TYPE_EVENT_UPSTREAM) at gstpad.c:4839
#177 0x00007f7bd9d5c9d4 in gst_pad_push_event (pad=0x7f7bda9567d0, event=0x7f7bc8e899e0) at gstpad.c:4964
#178 0x00007f7bd98a6224 in gst_base_sink_send_event (element=0x7f7be5616b20, event=0x7f7bc8e899e0) at gstbasesink.c:4370
#179 0x00007f7bd9d3f0f9 in gst_element_send_event (element=0x7f7be5616b20, event=0x7f7bc8e899e0) at gstelement.c:1561
#180 0x00007f7bd9d22cf6 in gst_bin_send_event (element=0x7f7c09915550, event=0x7f7bc8e899e0) at gstbin.c:2849
#181 0x00007f7bd9d3f0f9 in gst_element_send_event (element=0x7f7c09915550, event=0x7f7bc8e899e0) at gstelement.c:1561
#182 0x00007f7bd9d22cf6 in gst_bin_send_event (element=0x7f7c099156f0, event=0x7f7bc8e899e0) at gstbin.c:2849
#183 0x00007f7bd9d3f0f9 in gst_element_send_event (element=0x7f7c099156f0, event=0x7f7bc8e899e0) at gstelement.c:1561
#184 0x00007f7be40d16a2 in ?? () from /usr/lib/gstreamer-1.0/libgstplayback.so
#185 0x00007f7be40d18df in ?? () from /usr/lib/gstreamer-1.0/libgstplayback.so
#186 0x00007f7bd9d3f0f9 in gst_element_send_event (element=0x7f7bda966050, event=0x7f7bc8e899e0) at gstelement.c:1561
#187 0x00007f7bd9d22cf6 in gst_bin_send_event (element=0x7f7bda964040, event=0x7f7bc8e899e0) at gstbin.c:2849
#188 0x00007f7bd9d3f0f9 in gst_element_send_event (element=element@entry=0x7f7bda964040, event=0x7f7bc8e899e0) at gstelement.c:1561
#189 0x00007f7bd9d3f255 in gst_element_seek (element=element@entry=0x7f7bda964040, rate=6.92531445152252e-310, rate@entry=1, format=GST_FORMAT_UNDEFINED, format@entry=GST_FORMAT_TIME, flags=flags@entry=5, 
    start_type=start_type@entry=GST_SEEK_TYPE_SET, start=start@entry=18227540000, stop_type=stop_type@entry=GST_SEEK_TYPE_NONE, stop=0) at gstelement.c:1601
#190 0x00007f7bd9d88cf4 in gst_element_seek_simple (element=0x7f7bda964040, format=GST_FORMAT_TIME, seek_flags=5, seek_pos=18227540000) at gstutils.c:2287

If you need any other info or any other test, just say.
nvidia-bug-report.log.gz (85.2 KB)
vdpau.log (92 KB)

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Same issue here, pretty much the same backtrace afaict