From: Toshi Kani <toshi.kani@hp.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux PCI <linux-pci@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Yinghai Lu <yinghai@kernel.org>
Subject: Re: [Update][PATCH 3/6] ACPI / hotplug: Fix handle_root_bridge_removal()
Date: Wed, 06 Nov 2013 16:21:10 -0700 [thread overview]
Message-ID: <1383780070.1847.45.camel@misato.fc.hp.com> (raw)
In-Reply-To: <6808835.gmCqHn1NaE@vostro.rjw.lan>
On Mon, 2013-11-04 at 14:33 +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> It is required to do get_device() on the struct acpi_device in
> question before passing it to acpi_bus_hot_remove_device() through
> acpi_os_hotplug_execute(), because acpi_bus_hot_remove_device()
> calls acpi_scan_hot_remove() that does put_device() on that
> object.
>
> The ACPI PCI root removal routine, handle_root_bridge_removal(),
> doesn't do that, which may lead to premature freeing of the
> device object or to executing put_device() on an object that
> has been freed already.
>
> Fix this problem by making handle_root_bridge_removal() use
> get_device() as appropriate.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Thanks,
-Toshi
next prev parent reply other threads:[~2013-11-06 23:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-04 0:17 [PATCH 0/3] ACPI scan and hotplug fixes for 3.14 Rafael J. Wysocki
2013-11-04 0:18 ` [PATCH 1/3] ACPI / scan: Start matching drivers after trying scan handlers Rafael J. Wysocki
2013-11-04 0:21 ` [PATCH 2/3] ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug Rafael J. Wysocki
2013-11-04 0:21 ` [PATCH 3/3] ACPI / hotplug: Merge device hot-removal routines Rafael J. Wysocki
2013-11-04 0:41 ` [PATCH on top of 3/3] ACPI / hotplug: Remove unnecessary get_device() and put_device() Rafael J. Wysocki
2013-11-04 13:26 ` [PATCH 3/3] ACPI / hotplug: Merge device hot-removal routines Rafael J. Wysocki
2013-11-04 13:29 ` [Update][PATCH 0/6] ACPI scan and hotplug fixes Rafael J. Wysocki
2013-11-04 13:30 ` [Update][PATCH 1/6] ACPI / scan: Start matching drivers after trying scan handlers Rafael J. Wysocki
2013-11-05 23:27 ` Toshi Kani
2013-11-04 13:32 ` [Update][PATCH 2/6] ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug Rafael J. Wysocki
2013-11-05 23:27 ` [fixup][PATCH " Rafael J. Wysocki
2013-11-06 0:39 ` Toshi Kani
2013-11-06 1:35 ` Rafael J. Wysocki
2013-11-06 1:32 ` Toshi Kani
2013-11-04 13:33 ` [Update][PATCH 3/6] ACPI / hotplug: Fix handle_root_bridge_removal() Rafael J. Wysocki
2013-11-06 23:21 ` Toshi Kani [this message]
2013-11-04 13:36 ` [Update][PATCH 4/6] ACPI / hotplug: Simplify device ejection routines Rafael J. Wysocki
2013-11-06 23:27 ` Toshi Kani
2013-11-07 0:14 ` Rafael J. Wysocki
2013-11-07 0:17 ` Toshi Kani
2013-11-07 0:35 ` Rafael J. Wysocki
2013-11-04 13:36 ` [Update][PATCH 5/6] ACPI / hotplug: Make acpi_bus_hot_remove_device() internal Rafael J. Wysocki
2013-11-04 13:36 ` [Update][PATCH 6/6] ACPI / hotplug: Merge device hot-removal routines Rafael J. Wysocki
2013-11-05 23:32 ` [PATCH 0/3] More ACPI hotplug updates (was: [Update][PATCH 0/6] ACPI scan and hotplug fixes) Rafael J. Wysocki
2013-11-05 23:34 ` [PATCH 1/3] ACPI / hotplug: Carry out PCI root eject directly Rafael J. Wysocki
2013-11-06 1:42 ` [Update][PATCH " Rafael J. Wysocki
2013-11-05 23:36 ` [PATCH 2/3] ACPI / hotplug: Do not execute "insert in progress" _OST Rafael J. Wysocki
2013-11-05 23:48 ` [PATCH 3/3] ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines Rafael J. Wysocki
2013-11-06 1:44 ` [Update][PATCH " Rafael J. Wysocki
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