topic Re: imx8mm : Getting Kernel Panic in i.MX Processors

imx8mm : Getting Kernel Panic

santhosh2 — Thu, 24 Dec 2020 19:15:33 GMT

Hello,

I am getting a kernel panic message after that the processor hangs and the only way to recover is to do a power on reset. Is there any other way that once kernel panic happens the processor reboots automatically?

Regards

Santhosh

Re: imx8mm : Getting Kernel Panic

igorpadykov — Tue, 29 Dec 2020 00:47:55 GMT

Hi Santhosh

in general wdog can be used in such situations, it can reset pmic and all board,

example can be found in i.MX8M Mini EVK design

https://www.nxp.com/design/development-boards/i-mx-evaluation-and-development-boards/evaluation-kit-for-the-i-mx-8m-mini-applications-processor:8MMINILPD4-EVK

Best regards
igor

Re: imx8mm : Getting Kernel Panic

santhosh2 — Wed, 30 Dec 2020 02:54:33 GMT

Thanks,

Link: https://www.techrepublic.com/blog/linux-and-open-source/auto-reboot-linux-after-a-kernel-panic/

I also configured Linux to automatically reboot on a kernel panic by making a small modification to /etc/sysctl.conf,

Add the following to /etc/sysctl.conf:

kernel.panic = 20

This tells the kernel that if it encounters a panic, it is to reboot the system after a 20 second delay. By default, the kernel will never reboot when it encounters a panic, but with the above setting you can force it to.

Regards

Santhosh