On 21/05/2021 10:38, Boris Brezillon wrote:
> Make sure all bo->base.pages entries are either NULL or pointing to a
> valid page before calling drm_gem_shmem_put_pages().
>
> Reported-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations")
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
Reviewed-by: Steven Price <steven.price@xxxxxxx>
> ---
> drivers/gpu/drm/panfrost/panfrost_mmu.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
> index 569509c2ba27..d76dff201ea6 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
> @@ -460,6 +460,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
> if (IS_ERR(pages[i])) {
> mutex_unlock(&bo->base.pages_lock);
> ret = PTR_ERR(pages[i]);
> + pages[i] = NULL;
> goto err_pages;
> }
> }
>
