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| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-04-01 21:46:23 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-16 21:27:26 -0700 |
| commit | e264d3cf890eb1ead5200731b9e3dbd1d1b71fa8 (patch) | |
| tree | f0ac71897029ad2ec81178e32aec9eddb24e769e /kernel | |
| parent | b43105dee8480ca5784de5c858d1cccee74ebfb1 (diff) | |
| download | lwn-e264d3cf890eb1ead5200731b9e3dbd1d1b71fa8.tar.gz lwn-e264d3cf890eb1ead5200731b9e3dbd1d1b71fa8.zip | |
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/ftrace.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index e539dfaf65b9..a3c1dd9fd94e 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -642,7 +642,6 @@ 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; |