From e16fe8625f041b56b2d6866e2bc8abd0284499d0 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 1 Apr 2013 21:46:23 +0900 Subject: [PATCH] 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 Cc: Frederic Weisbecker Cc: Namhyung Kim Signed-off-by: Steven Rostedt Signed-off-by: Greg Kroah-Hartman --- kernel/trace/ftrace.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 63ce76f0cac6..5312d96f1daf 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -566,7 +566,6 @@ 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; -- 2.39.5