From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 14 Jan 2010 02:54:27 +0000 (+0800)
Subject: tracing/filters: Fix MATCH_FULL filter matching for PTR_STRING
X-Git-Tag: v2.6.33-rc5~32^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16da27a8bc7a0d050686d1b2e9efb53fab9ed226;p=pandora-kernel.git

tracing/filters: Fix MATCH_FULL filter matching for PTR_STRING

MATCH_FULL matching for PTR_STRING is not working correctly:

  # echo 'func == vt' > events/bkl/lock_kernel/filter
  # echo 1 > events/bkl/lock_kernel/enable
  ...
  # cat trace
   Xorg-1484  [000]  1973.392586: lock_kernel: ... func=vt_ioctl()
    gpm-1402  [001]  1974.027740: lock_kernel: ... func=vt_ioctl()

We should pass to regex.match(..., len) the length (including '\0')
of the source string instead of the length of the pattern string.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B4E8763.5070707@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

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