linux-kernel - [Bug report] Warning when hot-add an ACPI0004 device.

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-next>] [day] [month] [year] [list]

Message-ID: <52314A89.2060809@cn.fujitsu.com>
Date:	Thu, 12 Sep 2013 13:00:57 +0800
From:	Tang Chen <tangchen@...fujitsu.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, Toshi Kani <toshi.kani@...com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: [Bug report] Warning when hot-add an ACPI0004 device.

Hi Rafael, Toshi,

When we hot-add an ACPI0004 device, we got the following warning:

	acpi ACPI0004:01: Attempt to re-insert

The ACPI0004 device is a System Board in Fujitsu server, which has two
numa nodes (processors and memory).

It seems that we reserved the ACPI_NOTIFY_DEVICE_CHECK event twice in
acpi_hotplug_notify_cb().

According to bisect, this happens after the following commit:

 From 68a67f6c78b80525d9b3c6672e7782de95e56a83 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Date: Sun, 3 Mar 2013 23:05:55 +0100
Subject: [PATCH 1/1] ACPI / container: Use common hotplug code

Switch the ACPI container driver to using common device hotplug code
introduced previously.  This reduces the driver down to a trivial
definition and registration of a struct acpi_scan_handler object.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Acked-by: Toshi Kani <toshi.kani@...com>
Tested-by: Toshi Kani <toshi.kani@...com>
---
  drivers/acpi/container.c | 146 
++++-------------------------------------------
  1 file changed, 10 insertions(+), 136 deletions(-)

I'm now investigating this problem. If you have any idea about why this
happens, please let me know.

Thanks. :)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/