tracing: Fix double free when function profile init failed
authorNamhyung Kim <namhyung.kim@lge.com>
Mon, 1 Apr 2013 12:46:23 +0000 (21:46 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Apr 2013 04:02:31 +0000 (21:02 -0700)
commite16fe8625f041b56b2d6866e2bc8abd0284499d0
tree7b9458a9269c039acdbe23d003ece000aa5bc011
parentda60065417ee775999fd05d2a4ea0c268e4ec30b
tracing: Fix double free when function profile init failed

commit 83e03b3fe4daffdebbb42151d5410d730ae50bd1 upstream.

On the failure path, stat->start and stat->pages will refer same page.
So it'll attempt to free the same page again and get kernel panic.

Link: http://lkml.kernel.org/r/1364820385-32027-1-git-send-email-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/trace/ftrace.c