From: Miaoqian Lin <linmq006@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: linmq006@gmail.com, "Felix Kuehling" <Felix.Kuehling@amd.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/amdkfd: Fix missing check in kfd_parse_subtype_iolink
Date: Tue, 14 Dec 2021 14:48:23 +0000 [thread overview]
Message-ID: <20211214144823.16057-1-linmq006@gmail.com> (raw)
The kmemdup() function may return NULL in case of error.
Add NULL checking to prevent potential null deference.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index cfedfb1e8596..59d55f752aa7 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -1060,6 +1060,8 @@ static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink,
return -ENODEV;
/* same everything but the other direction */
props2 = kmemdup(props, sizeof(*props2), GFP_KERNEL);
+ if (!props2)
+ return -ENOMEM;
props2->node_from = id_to;
props2->node_to = id_from;
props2->kobj = NULL;
--
2.17.1
reply other threads:[~2021-12-14 14:48 UTC|newest]
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