Commit ebbb7bb9 authored by QintaoShen's avatar QintaoShen Committed by Alex Deucher
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drm/amdkfd: Check for potential null return of kmalloc_array() 



As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference.
Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.

Signed-off-by: default avatarQintaoShen <unSimple1993@163.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6ea239ad

drivers/gpu/drm/amd/amdkfd/kfd_events.c

+2 −0
Original line number Diff line number Diff line
@@ -749,6 +749,8 @@ static struct kfd_event_waiter *alloc_event_waiters(uint32_t num_events) 
	event_waiters = kmalloc_array(num_events,

					sizeof(struct kfd_event_waiter),

					GFP_KERNEL);

	if (!event_waiters)

		return NULL;



	for (i = 0; (event_waiters) && (i < num_events) ; i++) {

		init_wait(&event_waiters[i].wait);