linux-kernel - Re: [GIT PULL] More ACPI updates for v4.10-rc1

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Date:   Thu, 5 Jan 2017 00:15:34 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Lv Zheng <lv.zheng@...el.com>,
        Bob Moore <robert.moore@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [GIT PULL] More ACPI updates for v4.10-rc1

On Wed, Jan 4, 2017 at 6:46 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Thu, Dec 22, 2016 at 6:18 AM, Rafael J. Wysocki <rafael@...nel.org> wrote:
>>
>> Please pull from the tag
>>
>>  git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
>>  acpi-extra-4.10-rc1
>
> I only just noticed that this apparently introduces a new warning:
>
>   ACPI Warning: Table ffffffff9fe6c0a0, Validation count is zero
> before decrement
>
> the bug may be old, it looks like just the check is new to commit 174cc7187e6f.
>
> But it does seem like something is putting a table that wasn't properly gotten.
>
> Hmm?

It certainly seems so, but acpi_tb_put_table() and acpi_put_table()
are only used in a few places and all of them look correct by
inspection.  Nothing obvious at least.

Is this on HW or emulation?

Thanks,
Rafael