diff options
| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-06-30 22:00:57 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2022-08-09 18:15:42 +0200 |
| commit | df4aaf015775221dde8a51ee09edb919981f091e (patch) | |
| tree | 94c9593cbd9b86cf80bd258ad628ff7a01d61cd8 /drivers/gpu/drm/drm_gem_shmem_helper.c | |
| parent | drm/amdgpu: Fix for drm buddy memory corruption (diff) | |
| download | linux-df4aaf015775221dde8a51ee09edb919981f091e.tar.xz linux-df4aaf015775221dde8a51ee09edb919981f091e.zip | |
drm/shmem-helper: Add missing vunmap on error
The vmapping of dma-buf may succeed, but DRM SHMEM rejects the IOMEM
mapping, and thus, drm_gem_shmem_vmap_locked() should unvmap the IOMEM
before erroring out.
Cc: stable@vger.kernel.org
Fixes: 49a3f51dfeee ("drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends")
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220630200058.1883506-2-dmitry.osipenko@collabora.com
Diffstat (limited to 'drivers/gpu/drm/drm_gem_shmem_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem_shmem_helper.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 8ad0e02991ca..904fc893c905 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -302,6 +302,7 @@ static int drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem, ret = dma_buf_vmap(obj->import_attach->dmabuf, map); if (!ret) { if (WARN_ON(map->is_iomem)) { + dma_buf_vunmap(obj->import_attach->dmabuf, map); ret = -EIO; goto err_put_pages; } |