From: Mike Travis <travis@sgi.com>
Date: Sun, 11 Jan 2009 05:58:09 +0000 (-0800)
Subject: cpumask: fix bug in use cpumask_var_t in irq_desc
X-Git-Tag: v2.6.30-rc1~3^2~6^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=802bf931f2688ad125b73db597ce63cc842fb27a;p=pandora-kernel.git

cpumask: fix bug in use cpumask_var_t in irq_desc

Impact: fix bug where new irq_desc uses old cpumask pointers which are freed.

As Yinghai pointed out, init_copy_one_irq_desc() copies the old desc to
the new desc overwriting the cpumask pointers.  Since the old_desc and
the cpumask pointers are freed, then memory corruption will occur if
these old pointers are used.

Move the allocation of these pointers to after the copy.

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Yinghai Lu <yinghai@kernel.org>
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