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| author | Dr. David Alan Gilbert <linux@treblig.org> | 2010-08-02 09:43:52 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-08-10 08:13:55 +1000 |
| commit | d8ab35575098b2d6dc10b2535aeb40545933ae56 (patch) | |
| tree | 7eb2c3fd7dc881f95b0d854c5f9133fdf74cecee /drivers/gpu/drm/radeon/radeon_kms.c | |
| parent | 96576a9e1a0cdb8a43d3af5846be0948f52b4460 (diff) | |
| download | linux-stable-d8ab35575098b2d6dc10b2535aeb40545933ae56.tar.gz linux-stable-d8ab35575098b2d6dc10b2535aeb40545933ae56.tar.bz2 linux-stable-d8ab35575098b2d6dc10b2535aeb40545933ae56.zip | |
drm/radeon/kms: add missing copy from user
This hasn't mattered up until the ioctl started using the value, and it fell
apart.
fixes fd.o 29340, Ubuntu LP 606081
[airlied: cleaned up whitespace and don't need an error before pushing]
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_kms.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index ddcd3b13f151..948a2f454e42 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -112,7 +112,9 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) info = data; value_ptr = (uint32_t *)((unsigned long)info->value); - value = *value_ptr; + if (DRM_COPY_FROM_USER(&value, value_ptr, sizeof(value))) + return -EFAULT; + switch (info->request) { case RADEON_INFO_DEVICE_ID: value = dev->pci_device; |