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perf: Fix perf_event_init_context()
[firefly-linux-kernel-4.4.55.git]
/
kernel
/
events
/
core.c
diff --git
a/kernel/events/core.c
b/kernel/events/core.c
index ea899e2b5593e9633194ad68a42fb1f5f51728be..71232844f235f45068b1f6f30c5842693cff9e54 100644
(file)
--- a/
kernel/events/core.c
+++ b/
kernel/events/core.c
@@
-7729,6
+7729,8
@@
int perf_event_init_context(struct task_struct *child, int ctxn)
* swapped under us.
*/
parent_ctx = perf_pin_task_context(parent, ctxn);
+ if (!parent_ctx)
+ return 0;
/*
* No need to check if parent_ctx != NULL here; since we saw