perf_events: Fix invalid pointer when pid is invalid

[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / perf_event.c

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index c16158c..64507ea 100644 (file)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -5616,8 +5616,13 @@ SYSCALL_DEFINE5(perf_event_open,
                }
        }
 
-       if (pid != -1)
+       if (pid != -1) {
                task = find_lively_task_by_vpid(pid);
+               if (IS_ERR(task)) {
+                       err = PTR_ERR(task);
+                       goto err_group_fd;
+               }
+       }
 
        /*
         * Get the target context (task or percpu):