Nvll_osd_draw_lines coredump

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

• Hardware Platform (Jetson / GPU) GTX2080ti
• DeepStream Version 5.0.1
• TensorRT Version 7.1.3.4
• NVIDIA GPU Driver Version (valid for GPU only) 450.66

Sometimes the drawline function coredumped.
OUTPUT:
#0 0x00007f8e53f280d0 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
[Current thread is 1 (Thread 0x7f8d137fe700 (LWP 16890))]
(gdb)
(gdb) bt
#0 0x00007f8e53f280d0 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#1 0x00007f8e53f6d352 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#2 0x00007f8e53f5ed7f in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#3 0x00007f8e53f5f84f in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#4 0x00007f8e53f60402 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#5 0x00007f8e53f1a237 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#6 0x00007f8e53f2bf02 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#7 0x00007f8e53f642b9 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#8 0x00007f8e53f221c4 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#9 0x00007f8e53f1bbc9 in () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#10 0x00007f8e53f149d5 in cairo_stroke () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
#11 0x00007f8e18cf3b72 in nvll_osd_draw_lines ()
at /opt/nvidia/deepstream/deepstream/lib/libnvds_osd.so

2 
if (track_to_draw.size() > 1)
					{
						NvOSD_FrameLineParams frame_line_params;
						frame_line_params.buf_ptr = &(surface->surfaceList[surfindex]);
						frame_line_params.num_lines = track_to_draw.size() - 1;
						frame_line_params.mode = MODE_CPU;
						frame_line_params.line_params_list = (NvOSD_LineParams *)g_malloc(sizeof(NvOSD_LineParams) * frame_line_params.num_lines);

						for (guint k = 0; k < frame_line_params.num_lines; ++k)
						{
							NvOSD_LineParams *line_params = &frame_line_params.line_params_list[k];
							line_params->x1 = track_to_draw[k].x;
							line_params->y1 = track_to_draw[k].y;
							line_params->x2 = track_to_draw[k + 1].x;
							line_params->y2 = track_to_draw[k + 1].y;
							line_params->line_width = 1;
							line_params->line_color = color;
						}

						try
						{
							if (nvll_osd_draw_lines(ivaplugin3->nvosd_ctx, &frame_line_params))
							{
								printf("failure to draw lines");
							}
						}
						catch (std::exception e)
						{
							printf("failure to draw lines");
						}
						g_free(frame_line_params.line_params_list);
					}
4

It seems only rectangles support GPU

**And I also found that if I change to CPU mode, **
sometimes also rectangles crashed with the same error.

Any advice? THANKS!

5

Any replies？

6

Hey, would you mind to share the code which can be complied and run with us and the repro steps?

7

I found the solution:

nvll_osd_set_params should not be invoked too frequently!