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tracing: Have error path in predicate_parse() free its allocated memory 

In predicate_parse, there is an error path that is not going to
out_free instead it returns directly which leads to a memory leak.

Link: http://lkml.kernel.org/r/20190920225800.3870-1-navid.emamdoost@gmail.com

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Navid Emamdoost 2019-09-20 17:57:59 -05:00 committed by Steven Rostedt (VMware)
parent 968e517093
commit 96c5c6e6a5
1 changed files with 4 additions and 2 deletions
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6
kernel/trace/trace_events_filter.c
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@ -452,8 +452,10 @@ predicate_parse(const char *str, int nr_parens, int nr_preds,
switch (*next) {
case '(': /* #2 */
if (top - op_stack > nr_parens)
return ERR_PTR(-EINVAL);
if (top - op_stack > nr_parens) {
ret = -EINVAL;
goto out_free;
}
*(++top) = invert;
continue;
case '!': /* #3 */