Messages in this thread Patch in this message | | | Date | Fri, 06 Apr 2018 09:00:36 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 01/18] tracing: Fix a potential NULL dereference |
| |
From: Dan Carpenter <dan.carpenter@oracle.com>
We forgot to set the error code on this path so we return ERR_PTR(0) which is NULL. It results in a NULL dereference in the caller.
Link: http://lkml.kernel.org/r/20180323113735.GC28518@mwanda
Fixes: 100719dcef44 ("tracing: Add simple expression support to hist triggers") Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- kernel/trace/trace_events_hist.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 4f027642ceef..a02bc09d765a 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -2776,6 +2776,7 @@ static struct hist_field *parse_expr(struct hist_trigger_data *hist_data, expr->fn = hist_field_plus; break; default: + ret = -EINVAL; goto free; } -- 2.15.1
| |