linux-kernel - Re: [patch V3 00/12] rseq: Implement time slice extension mechanism

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5DFB2CA1-8751-409F-BBEA-CB753E717821@oracle.com>
Date: Thu, 13 Nov 2025 02:34:18 +0000
From: Prakash Sangappa <prakash.sangappa@...cle.com>
To: Thomas Gleixner <tglx@...utronix.de>
CC: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        LKML
	<linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul
 E. McKenney" <paulmck@...nel.org>,
        Boqun Feng <boqun.feng@...il.com>, Jonathan Corbet <corbet@....net>,
        Madadi Vineeth Reddy
	<vineethr@...ux.ibm.com>,
        K Prateek Nayak <kprateek.nayak@....com>,
        Steven
 Rostedt <rostedt@...dmis.org>,
        Sebastian Andrzej Siewior
	<bigeasy@...utronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: [patch V3 00/12] rseq: Implement time slice extension mechanism



> On Nov 12, 2025, at 3:17 PM, Prakash Sangappa <prakash.sangappa@...cle.com> wrote:
> 
> 
> 
>> On Nov 12, 2025, at 1:57 PM, Thomas Gleixner <tglx@...utronix.de> wrote:
>> 
>> On Wed, Nov 12 2025 at 06:30, Prakash Sangappa wrote:
>>> The problem reproduces on a 2 socket AMD(384 cpus) bare metal system.
>>> It occurs soon after system boot up.  Does not reproduce on a 64cpu VM.
>> 
>> Can you verify that the top most commit of the rseq/slice branch is:
>> 
>>   d2eb5c9c0693 ("selftests/rseq: Implement time slice extension test")
> 
> No it is
> 
> c46f12a1166058764da8e84a215a6b66cae2fe0a
>    selftests/rseq: Implement time slice extension test
> 

Tested the latest from rseq/slice with the top most commit you mentioned above and the 
watchdog panic does not reproduce anymore.

Thanks,
-Prakash

> I can refresh and try.
> -Prakash
> 
>> 
>> Thanks,
>> 
>>       tglx
>