From: Xiaoke Wang xkernel.wang@foxmail.com
commit e629e7b525a179e29d53463d992bdee759c950fb upstream.
kfree() is missing on an error path to free the memory allocated by kstrdup():
p = param = kstrdup(data->params[i], GFP_KERNEL);
So it is better to free it via kfree(p).
Link: https://lkml.kernel.org/r/tencent_C52895FD37802832A3E5B272D05008866F0A@qq.co...
Cc: stable@vger.kernel.org Fixes: d380dcde9a07c ("tracing: Fix now invalid var_ref_vals assumption in trace action") Signed-off-by: Xiaoke Wang xkernel.wang@foxmail.com Signed-off-by: Steven Rostedt (Google) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/trace/trace_events_hist.c | 1 + 1 file changed, 1 insertion(+)
--- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -3581,6 +3581,7 @@ static int trace_action_create(struct hi
var_ref_idx = find_var_ref_idx(hist_data, var_ref); if (WARN_ON(var_ref_idx < 0)) { + kfree(p); ret = var_ref_idx; goto err; }