From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Mon, 10 Feb 2014 22:25:35 +0000 (-0800)
Subject: drivers/message/i2o/i2o_config.c: fix deadlock in compat_ioctl(I2OGETIOPS)
X-Git-Tag: v3.14-rc3~37^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3eb7fbb41eb8d6e22d491741b8c5d5aa6cb069a;p=pandora-kernel.git

drivers/message/i2o/i2o_config.c: fix deadlock in compat_ioctl(I2OGETIOPS)

i2o_cfg_compat_ioctl(I2OGETIOPS) locks i2o_cfg_mutex and then calls
i2o_cfg_ioctl(I2OGETIOPS) that locks i2o_cfg_mutex as well.  A deadlock
is guaranteed.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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