We build a pipeline for vehicle plate detection, but when rtsp source sometimes disconnected, and the source bin state is reset
to GST_STATE_NULL and GST_STATE_PLAYING again for reconnecting, the pipeline crashes.
So we need some help for this , the system information and crash stacktrace are as below:
Tue Jul 27 16:08:00 2021
±----------------------------------------------------------------------------+
| NVIDIA-SMI 460.73.01 Driver Version: 460.73.01 CUDA Version: 11.2 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 Tesla T4 Off | 00000000:21:01.0 Off | 0 |
| N/A 71C P0 38W / 70W | 6871MiB / 15109MiB | 76% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+
| 1 Tesla T4 Off | 00000000:21:02.0 Off | 0 |
| N/A 40C P0 27W / 70W | 186MiB / 15109MiB | 0% Default |
| | | N/A |
±------------------------------±---------------------±---------------------+
gdb) bt
#0 0x00007f89dcbd6504 in v4l2_get_context(int) () at ///opt/nvidia/deepstream/deepstream-5.1/lib/libcuvidv4l2.so
#1 0x00007f89dcbd4dd5 in CuvidV4L2_Ioctl () at ///opt/nvidia/deepstream/deepstream-5.1/lib/libcuvidv4l2.so
#2 0x00007f89dcdfc432 in plugin_ioctl () at /usr/lib/x86_64-linux-gnu/libv4l/plugins/libcuvidv4l2_plugin.so
#3 0x00007f898451d4c2 in v4l2_ioctl () at /usr/lib/x86_64-linux-gnu/libv4l2.so.0
#4 0x00007f8984a3ed0d in gst_v4l2_object_try_fmt () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#5 0x00007f8984a3f4df in gst_v4l2_object_add_colorspace () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#6 0x00007f8984a41af5 in gst_v4l2_object_probe_caps_for_format () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#7 0x00007f8984a4825a in gst_v4l2_object_probe_caps () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#8 0x00007f8984a4abdc in gst_v4l2_video_dec_open () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#9 0x00007f8aaf5aa4d3 in () at /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0
#10 0x00007f8984a4ec0c in gst_v4l2_video_dec_change_state () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/deepstream/libgstnvvideo4linux2.so
#11 0x00007f8b1a394d5e in gst_element_change_state () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#12 0x00007f8b1a395499 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#13 0x00007f8a3f72d4bb in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#14 0x00007f8a3f739422 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#15 0x00007f8a3f739d12 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#16 0x00007f8a3f739f61 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstplayback.so
#17 0x00007f8b1a0f30bd in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007f8b1a10600e in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007f8b1a10e6f5 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007f8b1a10f10f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007f8b1a0f7574 in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007f8b1a368154 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#23 0x00007f8b1a0f9ab9 in g_object_notify_by_pspec () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007f8b1a3aad8c in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
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#25 0x00007f8b1a3b6ed8 in gst_pad_push_event () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#26 0x00007f8b0cd9e48b in () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#27 0x00007f8b0cd9f9fd in () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#28 0x00007f8a600702cf in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstcoreelements.so
#29 0x00007f8b1a3ac427 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#30 0x00007f8b1a3ac8bb in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#31 0x00007f8b1a3acce9 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#32 0x00007f8b1a3aa6b0 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#33 0x00007f8b1a3b6c0f in gst_pad_push_event () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#34 0x00007f8a0e011609 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideoparsersbad.so
#35 0x00007f8a0e01332e in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideoparsersbad.so
#36 0x00007f8a0e013e4c in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideoparsersbad.so
#37 0x00007f8b0cd7a5a2 in () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#38 0x00007f8b0cd8043e in () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#39 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#40 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#41 0x00007f8b143680c9 in gst_rtp_base_depayload_push () at /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0
#42 0x00007f8a0c597f64 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
#43 0x00007f8a0c5982d1 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
#44 0x00007f8a0c598779 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
#45 0x00007f8b143684a4 in () at /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0
#46 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#47 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#48 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#49 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
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#50 0x00007f8b1a39baab in gst_proxy_pad_chain_default () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#51 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#52 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#53 0x00007f8b1a39baab in gst_proxy_pad_chain_default () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#54 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#55 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#56 0x00007f8b1a39baab in gst_proxy_pad_chain_default () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#57 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#58 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#59 0x00007f8a0e25e6f5 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtpmanager.so
#60 0x00007f8b1a3ad89b in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#61 0x00007f8b1a3b5bc3 in gst_pad_push () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#62 0x00007f8a0e256ac6 in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtpmanager.so
#63 0x00007f8a0e25798d in () at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtpmanager.so
#64 0x00007f8b1a3e2279 in () at /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#65 0x00007f8b19e40c70 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#66 0x00007f8b19e402a5 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#67 0x00007f8b1b0976db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#68 0x00007f8b1a79371f in clone () at /lib/x86_64-linux-gnu/libc.so.6
