From: Jérôme Glisse <[email protected]> When GPU fails to resume we can not trust that value we write to GPU memory will post and we might get garbage (more like 0xffffffff on x86) when reading them back. This trigger out of range memory access in the kernel inside the vce resume code path.
This patch use canonical value to compute offset instead of reading back value from GPU memory. Signed-off-by: Jérôme Glisse <[email protected]> --- drivers/gpu/drm/radeon/vce_v1_0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/vce_v1_0.c b/drivers/gpu/drm/radeon/vce_v1_0.c index a01efe3..f541a4b 100644 --- a/drivers/gpu/drm/radeon/vce_v1_0.c +++ b/drivers/gpu/drm/radeon/vce_v1_0.c @@ -196,7 +196,7 @@ int vce_v1_0_load_fw(struct radeon_device *rdev, uint32_t *data) memset(&data[5], 0, 44); memcpy(&data[16], &sign[1], rdev->vce_fw->size - sizeof(*sign)); - data += le32_to_cpu(data[4]) / 4; + data += (le32_to_cpu(sign->len) + 64) / 4; data[0] = sign->val[i].sigval[0]; data[1] = sign->val[i].sigval[1]; data[2] = sign->val[i].sigval[2]; -- 2.9.3 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
