Re: [BUG net-next] arch/x86/kernel/cpu/bugs.c:2935: "Unpatched return thunk in use. This should not happen!" [STACKTRACE]

bp
2024-04-02T10:15:56Z

From: Borislav Petkov <bp@alien8.de>

Sorry if this comes out weird - mail troubles currently.

On Thu, Mar 28, 2024 at 07:38:30AM -0500, Michael Roth wrote:
> I'm seeing it pretty consistently on kvm/next as well. Not sure if
> there's anything special about my config but starting a fairly basic
> SVM guest seems to be enough to trigger it for me on the first
> invocation of svm_vcpu_run().

Hmm, can you share your config and what exactly you're doing?

I can't reproduce with Mirsad's reproducer, probably because of .config
differences. I tried making all CONFIG*KVM* options =y but no
difference.

Thx.

--
Regards/Gruss,
Boris.