Steps to reproduce: jetpack 4.4 no camera connect Test command: gst-launch-1.0 -v v4l2src device=/dev/video0 ! xvimag output error log: [image] then ctrl+c termination the gst-launch-1.0, Possible null pointer error. Dec 8 02:26:26 EAXVA04 kernel: [17769.053800] tegra194-vi5 15c10000.vi: u…

You can verify r32.7.x then try integrate the VI driver to r32.4.2

Please using v4l2-ctl to confirm the sensor driver first. Also get the trace log if unable capture by v4l2-ctl. https://elinux.org/Jetson/l4t/Camera_BringUp Thanks

if connected camera, can use v4l2_ctl command to capture imagges: v4l2-ctl --set-fmt-video=width=1920,height=1080,pixelformat=UYVY --set-ctrl bypass_mode=0 --stream-mmap --stream-count=100000 --stream-to=/dev/null -d /dev/video0 The issue is test no camera connect error process.

Please try below command. gst-launch-1.0 nvv4l2camerasrc device=/dev/video0 ! 'video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)1920, height=(int)1080, framerate=(fraction)30/1' ! nvvidconv ! fpsdisplaysink text-overlay=0 video-sink=xvimagesink sync=0 -v

What different with our gst test and this ? NULL point problem still exist .

Please apply the patch from below to try. [image] V4L2 timeout leads to NULL pointer dereference in kernel in jetpack 4.6 Jetson Xavier NX hello tim.cassens, please update kernel sources as below to fix NULL pointer dereference, for example, diff --git a/drivers/media/…

This is fix jetpack4.6; 4.4 code not compatible. void vi_capture_shutdown(struct tegra_vi_channel *chan) { struct vi_capture *capture = chan->capture_data; dev_dbg(chan->dev, "%s--\n", __func__); if (capture == NULL) return; if (capture->channel_id != CAPTURE_CHANNEL_INVALID_ID) vi_captur…

Would you upgrade to r32.7.x to verify the problem??

we can only worked on r32.4.2, this is customer environment，can not upgrade. BTW, which release package can ensure this problem solving.

Vi request timeout leads to NULL pointer dereference in kernel in jetpack 4.4

Robotics & Edge Computing Jetson Systems Jetson TX2

ShaneCCC December 15, 2022, 4:33am 7

Please apply the patch from below to try.

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Vi request timeout leads to NULL pointer dereference in kernel in jetpack 4.4

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