From: Abhishek Sagar <sagar.abhishek@gmail.com>
Date: Sat, 24 May 2008 18:15:02 +0000 (+0530)
Subject: ftrace: safe traversal of ftrace_hash hlist
X-Git-Tag: v2.6.27-rc1~1102^2^2~3^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ffdaa3582b6b39d625d585d07e329ffdc925e971;p=pandora-kernel.git

ftrace: safe traversal of ftrace_hash hlist

Hi Steven,

I noticed that concurrent instances of ftrace_record_ip()
have a race between ftrace_hash list traversal during
ftrace_ip_in_hash() (before acquiring ftrace_shutdown_lock)
and ftrace_add_hash(). If it's so then this should fix it.

Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com>
Cc: rostedt@goodmis.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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