linux-kernel - [RFC 0/2] cpu: fix leak and udev race in register

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Message-Id: <1368482732-25554-1-git-send-email-imammedo@redhat.com>
Date:	Tue, 14 May 2013 00:05:30 +0200
From:	Igor Mammedov <imammedo@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org, konrad.wilk@...cle.com,
	chuck.anderson@...cle.com, imammedo@...hat.com
Subject: [RFC 0/2] cpu: fix leak and udev race in register_cpu()

Here is a crude attempt fix race the way suggested by Greg,
probably done wrong but hopefully in the right direction.

1. move "crash_notes" to static attributes to guarantee that it's
destroyed with CPU on unregister.

2. fixes race between hotplugged CPU and onlining it via udev, described here
https://lkml.org/lkml/2012/4/30/193

Igor Mammedov (2):
  cpu: fix crash_notes leak
  cpu: make sure that cpu/online file created before KOBJ_ADD is
    emitted

 drivers/base/cpu.c |   55 +++++++++++++++++++++++++++++++++++----------------
 1 files changed, 38 insertions(+), 17 deletions(-)

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