[PATCH] tracing: Fix field_var_str allocation errno

[Yu Peng]

hist_trigger_elt_data_alloc() returns -EINVAL when the field_var_str
kcalloc() fails. Return -ENOMEM instead, matching the other allocation
failures in the function.

Fixes: c910db943d35 ("tracing: Dynamically allocate the per-elt hist_elt_data array")
Signed-off-by: Yu Peng <pengyu@xxxxxxxxxx>
---
 kernel/trace/trace_events_hist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index eb2c2bc8bc3d..17fe13e12a4f 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1680,7 +1680,7 @@ static int hist_trigger_elt_data_alloc(struct tracing_map_elt *elt)
 	elt_data->field_var_str = kcalloc(n_str, sizeof(char *), GFP_KERNEL);
 	if (!elt_data->field_var_str) {
 		hist_elt_data_free(elt_data);
-		return -EINVAL;
+		return -ENOMEM;
 	}
 	elt_data->n_field_var_str = n_str;
 
-- 
2.43.0