diff options
| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-05-23 06:36:49 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-05-24 18:33:34 +0400 |
| commit | d1de10870909a27ce2ac380d0671feb308826491 (patch) | |
| tree | 4640ef6e16c2013edff652193d6d531a7067e600 | |
| parent | 57d34dc5568f6ac700ef7e5c67f2bd6a8c7c4659 (diff) | |
| download | linux-d1de10870909a27ce2ac380d0671feb308826491.tar.xz | |
tools lib traceevent: Fix a possibly wrong memory dereference
If set_op_prio() failed, the token will be freed at out_free,
then arg->op.op would turn out to be a dangle pointer. After
returning EVENT_ERROR from process_op(), free_arg() will be
called and then it will finally see the dangling pointer.
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337740619-27925-13-git-send-email-namhyung.kim@lge.com
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/lib/traceevent/event-parse.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index d598b376e3c1..445a43ad42fd 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -1715,6 +1715,8 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) if (set_op_prio(arg) == -1) { event->flags |= EVENT_FL_FAILED; + /* arg->op.op (= token) will be freed at out_free */ + arg->op.op = NULL; goto out_free; } |