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| author | Colin Ian King <colin.king@canonical.com> | 2017-09-08 16:13:33 +0200 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-09-08 16:13:33 +0200 |
| commit | bfaa1ce809bbcd12b1399409ab1dbf0cdaba6e27 (patch) | |
| tree | d9756188eedec6d415652f8d7cad20d229f61dc0 /drivers | |
| parent | Merge tag 'exynos-drm-fixes-for-v4.14-rc1' of git://git.kernel.org/pub/scm/li... (diff) | |
| download | linux-bfaa1ce809bbcd12b1399409ab1dbf0cdaba6e27.tar.xz linux-bfaa1ce809bbcd12b1399409ab1dbf0cdaba6e27.zip | |
drm/amdkfd: check for null dev to avoid a null pointer dereference
The call to kfd_device_by_id can potentially return null, so check that
dev is null and return with -EINVAL to avoid a null pointer dereference.
Detected by CoverityScan CID#1454629 ("Dereference null return value")
Fixes: 5d71dbc3a588 ("drm/amdkfd: Implement image tiling mode support v2")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index e4a8c2e52cb2..660b3fbade41 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -892,6 +892,8 @@ static int kfd_ioctl_get_tile_config(struct file *filep, int err = 0; dev = kfd_device_by_id(args->gpu_id); + if (!dev) + return -EINVAL; dev->kfd2kgd->get_tile_config(dev->kgd, &config); |