Fedora 33/34 kernel OOPs

I am trying to port Fedora-IoT 33/34 on Raspberry PI CM3. I am trying to interface a DAC IC namely dac082s085. I want to using IIO framework and I am using ti-dac082s085 driver from “https://github.com/RevolutionPi/linux/blob/revpi-4.19/drivers/iio/dac

Since I found-out that Fedora doesn’t have dac082s085 driver and therefore I didn’t find iio:device corresponding to the DAC. I set up a host machine with latest Fedora 33/34 and compiled the RevPi kernel (from Git) for armv7hl. After solving couple of issues regarding vermagic and stuff, I am able to load kernel module. Initially, I got the below error:

[14586.398801] ti_dac082s085: Unknown symbol __stack_chk_guard (err -2)
[14586.399281] ti_dac082s085: Unknown symbol __stack_chk_fail (err -2)

After disabling STACK PROTECTOR in the kernel. Now I am getting the following error:

[ 712.552076] Unable to handle kernel paging request at virtual address 7e7b9f64
[ 712.552681] pgd = 8f6c4b5b
[ 712.552893] [7e7b9f64] *pgd=00000000

I also updated memory@0 in dtb file from:
reg = <0x00 0x00> ----to---- reg = <0x00 0x40000000>

But I am still getting the same error.

Below is the stripped “modinfo” output of the ti_dac082s085.ko module:
depends: industrialio
intree: Y
name: ti_dac082s085
vermagic: 5.11.0-156.fc34.armv7hl SMP mod_unload ARMv7 p2v8

Raspberry PI CM3 (with Fedora-IoT 33/34) “uname -a”:

Linux fedora 5.11.0-156.fc34.armv7hl #1 SMP Wed Feb 17 09:24:49 UTC 2021 armv7l armv7l armv7l GNU/Linux

I am not sure if the above errors are related to any Kernel configuration or something related to RaspberryPI. How can I solve this?

P.S: industrialio driver (which is the dependency of ti_dac082s085.ko module is already loaded).
[root@fedora ~]# lsmod | grep industrialio
industrialio 77824 2 mcp320x,iio_mux

Can you please help us finding any direction to solve this problem ??

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