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

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Message-ID: <20240318202124.GCZfiiRGVV0angYI9j@fat_crate.local>
Date: Mon, 18 Mar 2024 21:21:24 +0100
From: Borislav Petkov <bp@...en8.de>
To: Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
Cc: x86@...nel.org, Sean Christopherson <seanjc@...gle.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	Fuad Tabba <tabba@...gle.com>, Marc Zyngier <maz@...nel.org>,
	Shaoqin Huang <shahuang@...hat.com>,
	David Matlack <dmatlack@...gle.com>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Breno Leitao <leitao@...ian.org>, kvm@...r.kernel.org
Subject: Re: [BUG net-next] arch/x86/kernel/cpu/bugs.c:2935: "Unpatched
 return thunk in use. This should not happen!" [STACKTRACE]

On Mon, Mar 18, 2024 at 08:47:26PM +0100, Mirsad Todorovac wrote:
> With the latest net-next v6.8-5204-g237bb5f7f7f5 kernel, while running kselftest, there was this
> trap and stacktrace:

Send your kernel .config and how exactly you're triggering it, please.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette