5.13.19-4-pve Kernel Bug

[cryptic-code]

I was trying to pass through a USB Device to a VM today and I noticed that the Web UI didn't list any devices.

I dropped into a SSH session only to find out lsusb hangs out as well.

dmesg however had this output in red:

Feb 07 10:05:16 Z580 kernel: #PF: error_code(0x0000) - not-present page
Feb 07 10:05:16 Z580 kernel: #PF: supervisor read access in kernel mode
Feb 07 10:05:16 Z580 kernel: BUG: kernel NULL pointer dereference, address: 0000000000000030

There was a call trace on the screen when shutting down the machine. I had to forcefully (long pressing the power button) power down the machine.

On reboot, I installed 5.15.17-1-pve kernel and now lsusb and Web GUI works fine, and I don't see any unusual logs in dmesg

This issue seems to be related.

 

[t.lamprecht]

Thanks for bringing attention to this and yes, there are other, currently more active, threads regarding this like the one you linked, may make sense to concentrate discussion/effort there.