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FS#70091 - kernel panic after updating to latest kernel version 5.11.X, can't able to boot

Attached to Project: Arch Linux
Opened by venkatesh (venkatesh) - Saturday, 20 March 2021, 13:45 GMT
Last edited by Andreas Radke (AndyRTR) - Sunday, 21 March 2021, 08:32 GMT
Task Type Bug Report
Category Kernel
Status Assigned
Assigned To Jan Alexander Steffens (heftig)
Architecture x86_64
Severity Critical
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 2
Private No


Can't able to boot to the system after the 5.11.0 and upto 5.11.X till now, I can't able to boot from live USB of archlinux archlinux-2021.03.01-x86-64.iso. The screen displays kernel panic, I can't able to get the system log from the LTS kernel, it doesn't show up. I am on linux-lts 5.10.X now I have fear of upgrading any further.
I attached the photos of the kernel panic screen and I attached my system information. I included the packages list also in case of need.

Additional info:
* photos of kernel panic message.
* package version(s)
This task depends upon

2022-01-12: A task closure has been requested. Reason for request: Bug was resolved
Comment by loqs (loqs) - Saturday, 20 March 2021, 20:55 GMT Comment by Frederic Bezies (fredbezies) - Sunday, 21 March 2021, 09:45 GMT
I had a problem with this kernel too. My nvme became "read-only" once after a forced reboot and gnome-shell keeps on crashing. Moving to 5.10 LTS until this bug is fixed.

Downgrading the kernel to its version 5.11.7 fixed all the crashes I had. Linux 5.11.8 is broken on my installation with IOMMU deactivated.
Comment by venkatesh (venkatesh) - Sunday, 21 March 2021, 13:33 GMT
passing amd_iommu=off didn't solve the problem. Same error occurs.LTS kernel works fine.
Comment by loqs (loqs) - Sunday, 21 March 2021, 18:52 GMT
@venkatesh please test 5.11.8.arch1-1 which is currently in testing.
Comment by Pascal Ernster (hardfalcon) - Sunday, 21 March 2021, 19:47 GMT Comment by loqs (loqs) - Sunday, 21 March 2021, 20:27 GMT Comment by Pascal Ernster (hardfalcon) - Sunday, 21 March 2021, 20:55 GMT
I don't have any machines with an AMD CPU so I'm not affected by this issue and can't test it. I just came across this bug report by accident whilst looking for possible reports/causes of another bug. :)
Comment by venkatesh (venkatesh) - Monday, 22 March 2021, 01:31 GMT
thanks guys, thanks @loqs the issue was gone after installing the kernel 5.11.8 that you given above. Now working fine. The issue was caused by amd_iommu but passing it kernel parameter doesn't help at all. now everything is working fine. Thanks all.
Comment by loqs (loqs) - Friday, 26 March 2021, 18:40 GMT
Please test that the issue is resolved in 5.11.9.arch1-1.
Comment by venkatesh (venkatesh) - Friday, 26 March 2021, 23:50 GMT
In some versions of 5.8.x can't able to boot without kernel panic, but later 5.9.x release fixed the issue now working fine.