linux-kernel - Re: power-off delay/hang due to commit 6d25be57 (mainline)

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: <20201006214927.4nsqtfji4fdv3oed@linutronix.de>
Date:   Tue, 6 Oct 2020 23:49:27 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Stephen Berman <stephen.berman@....net>,
        Zhang Rui <rui.zhang@...el.com>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Len Brown <lenb@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" <devel@...ica.org>
Subject: Re: power-off delay/hang due to commit 6d25be57 (mainline)

On 2020-08-11 20:49:05 [+0200], To Stephen Berman wrote:
> On 2020-08-11 19:22:19 [+0200], Stephen Berman wrote:
> > Attached.
> 
> ssdt6.dsl:
> |  ThermalZone (TZ10)
> |  {
> …
> |      Method (_TSP, 0, Serialized)  // _TSP: Thermal Sampling Period
> |      {
> |          Return (0x0A)
> |      }
> |
> |      Method (_TZP, 0, Serialized)  // _TZP: Thermal Zone Polling
> |      {
> |          Return (0x0A)
> |      }
> |
> |      Method (_TMP, 0, Serialized)  // _TMP: Temperature
> |      {
> |          \GSA1.ZRC3 ()
> |          Sleep (0x03E8)
> |          Notify (\_TZ.TZ10, 0x81) // Thermal Trip Point Change
> |          Return (0x0B54)
> |      }
> 
> So if I read this correctly then TZ10 should be polled every second
> (check) and the temperature function contains a `sleep(1 second)' (which
> explains the mysteries delay) followed by the Notify() (which schedules
> the worker).
> 
> > Done as Bug 208877.

Rafael, do you have any suggestions?
 
Sebastian