BUG: scheduling while atomic

[mansman12]

Build and install works fine on debian 12 however during boot and shutdown the terminal is spammed with messages saying 'BUG: scheduling while atomic'.

Looks to be a previous issue that was resolved in an earlier fork (here) but cropped up again in on later kernel updates. That fix looked to be using GFP_ATOMIC with kzalloc in debug.c rather than GFP_KERNEL with kmalloc (here).

Bug is present in kernel version 6.1.0-13, 6.5.0-0 (ones I've tried). Also prevents 6.5.0-0 from shutting down properly.

Bug also stops using any debug modes as the terminal is spammed.

[tyisafk]

Having the same issue as well. Tried on Arch Linux's latest and LTS kernels.

[mansman12]

I've traced the issue down further to the workqueue using sudo dmesg after a reboot. It looks like the issue is tied to sys_work_func from aver_xilinx_I2CRead:

[ 37.990515] aver_xilinx_I2CRead+0x122/0x1e0 [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990537] i2c_model_read+0x65/0x90 [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990556] i2c_read_byte+0x4e/0x55 [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990571] ? srso_return_thunk+0x5/0x10
[ 37.990573] iTE_I2C_ReadByte+0x45/0x5f [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990588] hdmi2_irq+0x2a/0x9e [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990602] ite6664_task+0x9f/0xec [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]
[ 37.990616] sys_work_func+0x38/0xc0 [gc573 adad1fd057fa98bc83d93c882a9756e51178a26f]

I've looked at various files in the utils folder and found a bunch of them are still using GFP_KERNEL rather than GFP_ATOMIC but can't find which ones actually need updating without doing a ton of trial and error. The files in question are the following:

• utils\i2c\i2c_model.c
• utils\mem\mem_c_model.c
• utils\misc\sys.c
• utils\trace\debug.c
• utils\v4l2\framegrabber.c
• utils\v4l2\v4l2_model_device.c
• utils\v4l2\v4l2_model_videobuf2.c

I've tried building and installing changing all the GFP_KERNEL in utils\i2c\i2c_model.c followed by only changing all the GFP_KERNEL in utils\misc\sys.c with no luck.

[mansman12]

Having looked at previous issues on the original fork, it looks like it just might be down to a bug on how Linux currently handles interrupt contexts.

The guy in this issue hired a developer and they gave feedback in the last comment: derrod#18

[zDEFz]

Today I have installed the kernel module and set it up.
I appear to crash a lot.

See: https://0x0.st/HhJN.txt
I will boot Windows and update the firmware.

If this will fix my issue, it could be that the latest firmware is a requirement.

Unclear.

Edit there was no firmware update available. I will investigate the cause of the crash.

Not crashed so far, but also not opened OBS

Well, it works, but seems awfully laggy.

[NulliferBones]

Unfortunately I do not know how to fix this problem. I wish someone else could help.

[mansman12]

Unfortunately I do not know how to fix this problem. I wish someone else could help.

Yup, I moved on to a different capture card as it doesn't seem like this will be resolved any time soon.

[zDEFz]

Unfortunately I do not know how to fix this problem. I wish someone else could help.

Yup, I moved on to a different capture card as it doesn't seem like this will be resolved any time soon.

Same. Got a used Magewell card with 2 DVI and adapted that to 2x HDMI

[NulliferBones]

I love this capture card, it's so nice. But now I also wish I could afford a different one.

[mansman12]

I love this capture card, it's so nice. But now I also wish I could afford a different one.

The one I moved on to was this one: https://www.youtube.com/watch?v=RpLASLDXxiM

I think it was about $200 last time I checked.

Word of warning, if you don't have a video signal coming through it your OBS log gets spammed with events.

That bug in the drivers hasn't been fixed.

[zDEFz]

I love this capture card, it's so nice. But now I also wish I could afford a different one.

The one I moved on to was this one: https://www.youtube.com/watch?v=RpLASLDXxiM

I think it was about $200 last time I checked.

Word of warning, if you don't have a video signal coming through it your OBS log gets spammed with events.

That bug in the drivers hasn't been fixed.

I bought my magewell 11070 dual dvi used.. for £113,88 at blackmoreit