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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-01-05 17:09:43 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-01-11 15:44:27 -0500 |
| commit | abfaf0eee97925905e742aa3b0b72e04a918fa9e (patch) | |
| tree | ea7ca1eda5b27866d6a1b4268475d1015e92b4a9 /drivers/gpu | |
| parent | 978ffac878fd64039f95798b15b430032d2d89d5 (diff) | |
| download | linux-abfaf0eee97925905e742aa3b0b72e04a918fa9e.tar.bz2 | |
drm/amdkfd: Check for null pointer after calling kmemdup
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>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c index f187596faf66..9624bbe8b501 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c @@ -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; |