Commit 764a2ab9 authored by Boris Brezillon's avatar Boris Brezillon
Browse files

drm/panfrost: Fix the panfrost_mmu_map_fault_addr() error path 



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: default avatarTomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: <stable@vger.kernel.org>
Fixes: 187d2929 ("drm/panfrost: Add support for GPU heap allocations")
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: default avatarSteven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210521093811.1018992-1-boris.brezillon@collabora.com
parent 7f67aa09

drivers/gpu/drm/panfrost/panfrost_mmu.c

+1 −0
Original line number Diff line number Diff line
@@ -504,6 +504,7 @@ 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;

		}

	}