linux-kernel - Re: Linux 6.12.2

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Message-ID: <01a7263b-3739-582e-aade-6d9d9495500d@applied-asynchrony.com>
Date: Fri, 6 Dec 2024 00:07:29 +0100
From: Holger Hoffstätte <holger@...lied-asynchrony.com>
To: Genes Lists <lists@...ience.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: Linux 6.12.2

On 2024-12-05 23:04, Genes Lists wrote:
> On Thu, 2024-12-05 at 14:53 +0100, Greg Kroah-Hartman wrote:
>> I'm announcing the release of the 6.12.2 kernel.
>>
> 
> 6.12.1 works fine but 6.12.2 generates lots of errors during
> boot. Tried on several machines all exhibit the same issue. This one is
> an older lenovo laptop. They do boot and appear to be working but the
> boot errors are worrisome.
> 
> It's been several hours since 12.2.2 was released, so others may not
> have a problem?

As Linus has indicated in:
https://lore.kernel.org/stable/CAHk-=whGd0dfaJNiWSR60HH5iwxqhUZPDWgHCQd446gH2Wu0yQ@mail.gmail.com/

the problem is the missing commit b23decf8ac91 ("sched: Initialize idle tasks
only once"). Applying that on top of 6.12.2 fixes the problem.

We just encountered this issue in Gentoo as well when releasing a new kernel
and adding that patch has resolved the issue.

> Thought it best to share before I start to work on bisect. config and
> dmesg outputs attached.

No need to, just add b23decf8ac91 :)

cheers
Holger