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08 May, 2024

Raspberry PI CM4 Gstreamer: Segmentation fault

 Programing Coderfunda     May 08, 2024     No comments   

I have a program developed for Raspberry PI CM4 with Bullseye OS that receives video from RPI NoIR Camera V2 Gstreamer pipeline and uses OpenCV for further processing.
However, after successfully working for some time program crashes with segmentation fault and backtrace shows next:
0x0000007fe0fd8930 in GstLibcameraSrcState::requestCompleted(libcamera::Request*) ()
from /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstlibcamera.so
(gdb) bt full
#0 0x0000007fe0fd8930 in GstLibcameraSrcState::requestCompleted(libcamera::Request*) ()
at /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstlibcamera.so
#1 0x0000007fe0ec2750 in libcamera::Camera::requestComplete(libcamera::Request*) ()
at /lib/aarch64-linux-gnu/libcamera.so.0.0
#2 0x0000007fe0ef33d4 in libcamera::PipelineHandler::completeRequest(libcamera::Request*) ()
at /lib/aarch64-linux-gnu/libcamera.so.0.0
#3 0x0000007fe0f2ecd4 in libcamera::RPi::CameraData::checkRequestCompleted() ()
at /lib/aarch64-linux-gnu/libcamera.so.0.0
#4 0x0000007fe0f2ede8 in libcamera::RPi::CameraData::handleState() ()
at /lib/aarch64-linux-gnu/libcamera.so.0.0
#5 0x0000007fe0eaa750 in libcamera::ipa::RPi::IPAProxyRPi::processStatsCompleteThread(libcamera::ipa::RPi::BufferIds const&) () at /lib/aarch64-linux-gnu/libcamera.so.0.0
#6 0x0000007fe0e13088 in libcamera::Object::message(libcamera::Message*) ()
at /lib/aarch64-linux-gnu/libcamera-base.so.0.0
#7 0x0000007fe0e15490 in libcamera::Thread::dispatchMessages(libcamera::Message::Type) ()
at /lib/aarch64-linux-gnu/libcamera-base.so.0.0
#8 0x0000007fe0e0c804 in libcamera::EventDispatcherPoll::processEvents() ()
at /lib/aarch64-linux-gnu/libcamera-base.so.0.0
#9 0x0000007fe0e151b8 in libcamera::Thread::exec() () at /lib/aarch64-linux-gnu/libcamera-base.so.0.0
#10 0x0000007fe0ec6cf0 in libcamera::CameraManager::Private::run() ()
at /lib/aarch64-linux-gnu/libcamera.so.0.0
#11 0x0000007ff760bcac in () at /lib/aarch64-linux-gnu/libstdc++.so.6
#12 0x0000007ff6fdb648 in start_thread (arg=0x7fe0cff740) at pthread_create.c:477



My pipeline for gstreamer looks like this:
string p_line1 = "libcamerasrc ";
string p_line2 = "! video/x-raw, format=RGBx, width=640, height=480, framerate=30/1 ";
string p_line3 = "! videoflip method=rotate-180 ! videoconvert ! video/x-raw, format=(string)BGR ";
string p_line4 = "! appsink";
string pipeline = p_line1 + p_line2 + p_line3 + p_line4;



I followed this tutorial to install gstreamer
https://qengineering.eu/install-gstreamer-1.18-on-raspberry-pi-4.html />

What can be the cause of the problem and how do i fix it? Thanks in advance!
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