From: Török Edwin <edwintorok@gmail.com>
Date: Sun, 23 Nov 2008 10:39:07 +0000 (+0200)
Subject: tracing/stack-tracer: fix locking and refcounts
X-Git-Tag: v2.6.29-rc1~586^2~49^8~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cffa10aecb6891f090a4d53a075bc40c082c45fc;p=pandora-kernel.git

tracing/stack-tracer: fix locking and refcounts

Impact: fix refcounting/object-access bug

Hold mmap_sem while looking up/accessing vma.
Hold the RCU lock while using the task we looked up.

Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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