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drm/amdkfd: Check for null pointer after calling kmemdup

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[ Upstream commit abfaf0eee97925905e742aa3b0b72e04a918fa9e ]

As the possible failure of the allocation, kmemdup() may return NULL
pointer.
Therefore, it should be better to check the 'props2' in order to prevent
the dereference of NULL pointer.

Fixes: 3a87177eb141 ("drm/amdkfd: Add topology support for dGPUs")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2022-01-05 17:09:43 +08:00 committed by Greg Kroah-Hartman
parent 950d17f190
commit 5609b78039
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdkfd/kfd_crat.c
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@ -1060,6 +1060,9 @@ 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;