NULL Pointer Dereference

General system Kernel, boot, graphics & hardware
1

Running LTS Kernel.

Linux hogwart 5.15.53-1-lts #1 SMP Fri, 08 Jul 2022 12:38:20 +0000 x86_64 GNU/Linux

System was hanging. All I see is

Jul 09 19:07:53 hogwart kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008
Jul 09 19:07:53 hogwart kernel: #PF: supervisor read access in kernel mode
Jul 09 19:07:53 hogwart kernel: #PF: error_code(0x0000) - not-present page
-- Boot 9221ad565b5445008c471033990ccca4 --

Anything known?

2

Looks at lot like this: https://bugs.archlinux.org/task/74420

Try something other than BFQ and see if that helps?

3

Thanks for this.

I currently have

manfred /home/manfred ▶ cat /sys/block/nvme0n1/queue/scheduler                                                                                                   
[none] mq-deadline kyber bfq 
manfred /home/manfred ▶ cat /sys/block/nvme1n1/queue/scheduler                                                                                                   
[none] mq-deadline kyber bfq
1 Like
4

FWIW, I switched to

Linux hogwart 5.18.10-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 07 Jul 2022 17:18:13 +0000 x86_64 GNU/Linux