From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757114Ab3DAMqk (ORCPT ); Mon, 1 Apr 2013 08:46:40 -0400 Received: from LGEMRELSE1Q.lge.com ([156.147.1.111]:52041 "EHLO LGEMRELSE1Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752656Ab3DAMqj (ORCPT ); Mon, 1 Apr 2013 08:46:39 -0400 X-AuditID: 9c93016f-b7b6aae000000e9c-1f-515981ac2b00 From: Namhyung Kim To: Steven Rostedt , Frederic Weisbecker Cc: LKML , Namhyung Kim Subject: [PATCH 1/3] tracing: Fix double free when function profile init failed Date: Mon, 1 Apr 2013 21:46:23 +0900 Message-Id: <1364820385-32027-1-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 1.7.11.7 X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namhyung Kim 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. Signed-off-by: Namhyung Kim --- kernel/trace/ftrace.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 25770824598f..65bc47472b1b 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -694,7 +694,6 @@ int ftrace_profile_pages_init(struct ftrace_profile_stat *stat) free_page(tmp); } - free_page((unsigned long)stat->pages); stat->pages = NULL; stat->start = NULL; -- 1.7.11.7