Complete freeze

English Hardware
1

I am experiencing total, complete freezes in my desktop pc with fully updated openSUSE Tumbleweed.
It happens since a few days, sometimes after seconds from boot, other times after a few minutes. I have tried booting with the previous kernel (5.8.4) and in recovery mode, but the problem persists.
I have nothing in dmesg or in other logs, but I got “lucky” yesterday: I was working in virtual terminal 1 when it froze showing this message:

 BUG: kernel NULL pointer dereference, address: 0000000000000001

Is it a real bug or an hardware problem? My desktop system is getting quite old…
Here (and in my signature) you can find a few infos about it:

 ~ > inxi
CPU: 8-Core AMD FX-8350 (-MCP-) speed/min/max: 1404/1400/4000 MHz Kernel: 5.8.7-1-default x86_64 Up: N/A
Mem: 2558.9/15982.1 MiB (16.0%) Storage: 642.77 GiB (58.0% used) Procs: 378 Shell: bash 5.0.18 inxi: 3.1.00

 ~ > inxi -G
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM] driver: radeon v: kernel
Display: x11 server: X.Org 1.20.9 driver: radeon resolution: 1920x1080~60Hz
OpenGL: renderer: AMD CAICOS (DRM 2.50.0 / 5.8.7-1-default LLVM 10.0.1) v: 3.3 Mesa 20.1.7

And here is the results of a few greps into my dmesg… don’t know if they are relevant or not:

 ~ > dmesg|grep -i fail
   21.383555] CIFS: VFS: cifs_mount failed w/return code = -2
 ~ > dmesg|grep -i error
    2.379049] RAS: Correctable Errors collector initialized.
   21.382628] CIFS: VFS: Error connecting to socket. Aborting operation.
 ~ > dmesg|grep -i warn
    0.029096] ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has valid Length but zero Address: 0x0000000000000000/0x1 (20200528/tbfadt-615)
    0.029099] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe0Block: 64/32 (20200528/tbfadt-564)
    4.271192] random: 7 urandom warning(s) missed due to ratelimiting
    7.874162] ACPI Warning: SystemIO range 0x0000000000000B00-0x0000000000000B08 conflicts with OpRegion 0x0000000000000B00-0x0000000000000B0F (\SOR1) (20200528/utaddress-204)
    7.875447] ACPI Warning: SystemIO range 0x0000000000000B00-0x0000000000000B08 conflicts with OpRegion 0x0000000000000B00-0x0000000000000B2F (\_SB.PCI0.SBRG.ASOC.SMRG) (20200528/utaddress-204)
    7.875453] ACPI Warning: SystemIO range 0x0000000000000B00-0x0000000000000B08 conflicts with OpRegion 0x0000000000000B00-0x0000000000000B2F (\SMRG) (20200528/utaddress-204)

Any suggestions?

Thank you in advance
Cris

2

I’ve had a similar freeze on a desktop with a funky Nvidia driver. I can see that you have an AMD driver, I don’t know if this is related but can you boot with nomodeset?

3

Hi SJLPHI, thank you for your reply!
After a few more tests, it seems that there is a very high chance that the problem is a faulty RAM module.

Cris