Re: [PATCH 2/2] drm/msm: Fix VM_BIND UNMAP locking

[Rob Clark]

On Tue, Mar 24, 2026 at 2:40 PM Rob Clark <robin.cl...@oss.qualcomm.com> wrote:
>
> Wrong argument meant that the objs involved in UNMAP ops were not always
> getting locked.
>
> Since _NO_SHARE objs share a common resv with the VM (which is always
> locked) this would only show up with non-_NO_SHARE BOs.
>

Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/94
Fixes: 2e6a8a1fe2b2 ("drm/msm: Add VM_BIND ioctl")

> Signed-off-by: Rob Clark <robin.cl...@oss.qualcomm.com>
> ---
>  drivers/gpu/drm/msm/msm_gem_vma.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c 
> b/drivers/gpu/drm/msm/msm_gem_vma.c
> index 68a8f8f592fb..40892e206dbd 100644
> --- a/drivers/gpu/drm/msm/msm_gem_vma.c
> +++ b/drivers/gpu/drm/msm/msm_gem_vma.c
> @@ -1251,7 +1251,7 @@ vm_bind_job_lock_objects(struct msm_vm_bind_job *job, 
> struct drm_exec *exec)
>                         case MSM_VM_BIND_OP_UNMAP:
>                                 ret = drm_gpuvm_sm_unmap_exec_lock(job->vm, 
> exec,
>                                                               op->iova,
> -                                                             op->obj_offset);
> +                                                             op->range);
>                                 break;
>                         case MSM_VM_BIND_OP_MAP:
>                         case MSM_VM_BIND_OP_MAP_NULL: {
> --
> 2.53.0
>