I run a Jetson tx2 and upgraded the yocto layer meta-tegra from dunfell version r32.4.3 to dunfell r32.6.1. This minimal example pipeline works well in the former version but not with r32.6.1
gst-launch-1.0 videotestsrc ! nvvidconv ! nvoverlaysink
The last few lines of the trace are
0:00:02.515295800 158 0x559f871a40 LOG basesink gstbasesink.c:2281:gst_base_sink_wait_clock:<nvoverlaysink-nvoverlaysink0> time 0:00:00.000000000, base_time 7:44:13.379937505
0:00:02.515321368 158 0x559f871a40 DEBUG GST_CLOCK gstclock.c:256:gst_clock_entry_new:<GstSystemClock> created entry 0x559fa4a540, time 7:44:13.379937505
0:00:02.515355640 158 0x559f871a40 DEBUG GST_CLOCK gstclock.c:557:gst_clock_id_wait:<GstSystemClock> waiting on clock entry 0x559fa4a540
0:00:02.515381336 158 0x559f871a40 DEBUG GST_CLOCK gstclock.c:1091:gst_clock_get_internal_time:<GstSystemClock> internal time 7:44:13.390812713
0:00:02.515403832 158 0x559f871a40 DEBUG GST_CLOCK gstclock.c:1136:gst_clock_get_time:<GstSystemClock> adjusted time 7:44:13.390812713
0:00:02.515429016 158 0x559f871a40 DEBUG GST_CLOCK gstsystemclock.c:710:gst_system_clock_id_wait_jitter_unlocked: entry 0x559fa4a540 time 7:44:13.379937505 now 7:44:13.390812713 diff (time-now)
-10875208
0:00:02.515451161 158 0x559f871a40 DEBUG GST_CLOCK gstclock.c:565:gst_clock_id_wait:<GstSystemClock> done waiting entry 0x559fa4a540, res: 1 (early)
0:00:02.515474425 158 0x559f871a40 DEBUG basesink gstbasesink.c:2712:gst_base_sink_do_sync:<nvoverlaysink-nvoverlaysink0> clock returned 1, jitter 0:00:00.010875208
0:00:02.515493817 158 0x559f871a40 DEBUG basesink gstbasesink.c:3641:gst_base_sink_chain_unlocked:<nvoverlaysink-nvoverlaysink0> rendering object 0x55a066fa20
0:00:02.515517657 158 0x559f871a40 LOG videosink gstvideosink.c:226:gst_video_sink_show_frame:<nvoverlaysink-nvoverlaysink0> rendering frame, ts=0:00:00.000000000
0:00:02.515535481 158 0x559f871a40 DEBUG omxvideosink gstomxvideosink.c:1381:gst_omx_video_sink_show_frame:<nvoverlaysink-nvoverlaysink0> Received the frame
0:00:02.515558105 158 0x559f871a40 DEBUG omx gstomx.c:1015:gst_omx_component_get_last_error:<nvoverlaysink-nvoverlaysink0> Returning last yuv420 error: None (0x00000000)
0:00:02.515580057 158 0x559f871a40 DEBUG omx gstomx.c:1039:gst_omx_component_get_parameter:<nvoverlaysink-nvoverlaysink0> Getting yuv420 parameter at index 0x02000001
0:00:02.515603290 158 0x559f871a40 DEBUG omx gstomx.c:1042:gst_omx_component_get_parameter:<nvoverlaysink-nvoverlaysink0> Got yuv420 parameter at index 0x02000001: None (0x00000000)
0:00:02.515624154 158 0x559f871a40 DEBUG omx gstomx.c:1252:gst_omx_port_update_port_definition:<nvoverlaysink-nvoverlaysink0> Updated yuv420 port 0 definition: None (0x00000000)
0:00:02.515731834 158 0x559f871a40 DEBUG omx gstomx.c:2328:gst_omx_port_is_enabled:<nvoverlaysink-nvoverlaysink0> yuv420 port 0 is enabled: 1
0:00:02.515755035 158 0x559f871a40 DEBUG omx gstomx.c:1276:gst_omx_port_acquire_buffer:<nvoverlaysink-nvoverlaysink0> Acquiring yuv420 buffer from port 0
0:00:02.515783291 158 0x559f871a40 DEBUG omx gstomx.c:1387:gst_omx_port_acquire_buffer:<nvoverlaysink-nvoverlaysink0> yuv420 port 0 has pending buffers
0:00:02.515805915 158 0x559f871a40 DEBUG omx gstomx.c:1402:gst_omx_port_acquire_buffer:<nvoverlaysink-nvoverlaysink0> Acquired buffer 0x7fa0022240 (0x7fa0079870) from yuv420 port 0: 0
0:00:02.515903100 158 0x559f871a40 LOG GST_BUFFER gstbuffer.c:1797:gst_buffer_map_range: buffer 0x55a066fa20, idx 0, length -1, flags 0001
0:00:02.515930940 158 0x559f871a40 LOG GST_BUFFER gstbuffer.c:241:_get_merged_memory: buffer 0x55a066fa20, idx 0, length 1
Caught SIGSEGV
0:00:02.518511469 158 0x7f98002800 DEBUG omx gstomx.c:548:EventHandler:<nvoverlaysink-nvoverlaysink0> yuv420 unknown event 0x70e00001
#0 0x0000007fb45176c4 in __GI___poll
#1 0x0000007fb4654b00 in () at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
#2 0x0000007fb4654eb0 in g_main_loop_run ()
#3 0x0000007fb47f98ec in gst_bus_poll ()
#4 0x0000005591b78b18 in ()
#5 0x0000005591b77928 in ()
#6 0x0000007fb4470158 in __libc_start_main (main=
#7 0x0000005591b77fe4 in ()
Spinning. Please run 'gdb gst-launch-1.0 109' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.
The same pipeline does not crash when the nvvidconv element is omitted.