From: jsg <jsg@openbsd.org>
Date: Thu, 21 Apr 2022 09:47:25 +0000 (+0000)
Subject: drm/amdkfd: Check for potential null return of kmalloc_array()
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=01a0a85a4e0fb4c12f9fa644584090fbd35d5a29;p=openbsd

drm/amdkfd: Check for potential null return of kmalloc_array()

From QintaoShen
f2658d5966bcee8c3eb487875f459756d4f7cdfc in linux 5.15.y/5.15.35
ebbb7bb9e80305820dc2328a371c1b35679f2667 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/amdkfd/kfd_events.c b/sys/dev/pci/drm/amd/amdkfd/kfd_events.c
index 3eea4edee35..b8bdd796cd9 100644
--- a/sys/dev/pci/drm/amd/amdkfd/kfd_events.c
+++ b/sys/dev/pci/drm/amd/amdkfd/kfd_events.c
@@ -531,6 +531,8 @@ 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);