linux-kernel - Re: Unpatched return thunk in use. This should not happen!

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Date: Tue, 26 Mar 2024 13:56:20 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Borislav Petkov <bp@...en8.de>
Cc: Thomas Gleixner <tglx@...utronix.de>,
 Peter Zijlstra <peterz@...radead.org>, Josh Poimboeuf <jpoimboe@...nel.org>,
 Ingo Molnar <mingo@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org, LKML <linux-kernel@...r.kernel.org>,
 Marco Elver <elver@...gle.com>, kasan-dev@...glegroups.com
Subject: Re: Unpatched return thunk in use. This should not happen!

Dear Borislav,

Am 26.03.24 um 13:49 schrieb Borislav Petkov:
> On Tue, Mar 26, 2024 at 01:40:57PM +0100, Paul Menzel wrote:
>> On a Dell XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022, Linux 6.9-rc1+ built
>> with
>>
>>       CONFIG_KCSAN=y
> 
> Are you saying that with KCSAN=n, it doesn't happen?

Indeed. Please find the messages from the journal attached.

> From the splat lt looks like it complains when loading that cryptd
> module. But that thing looks like a normal module to me so it should
> be fine actually.
> 
> Hmm.

Kind regards,

Paul
View attachment "linux-6.9-rc1+-without-kcsan--messages.txt" of type "text/plain" (111872 bytes)