diff options
| author | Rob Clark <robdclark@chromium.org> | 2022-05-31 13:08:56 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2022-06-01 17:20:08 -0700 |
| commit | 036d20726c30267724416e966c9f92db07de8081 (patch) | |
| tree | 67f575a67d56393d416aeb208129a956e1266428 /drivers/gpu/drm/msm/msm_drv.h | |
| parent | af0f2a8cc3977e08e79a096f0c2c7a5be29b130b (diff) | |
| download | linux-036d20726c30267724416e966c9f92db07de8081.tar.bz2 | |
drm/msm: Ensure mmap offset is initialized
If a GEM object is allocated, and then exported as a dma-buf fd which is
mmap'd before or without the GEM buffer being directly mmap'd, the
vma_node could be unitialized. This leads to a situation where the CPU
mapping is not correctly torn down in drm_vma_node_unmap().
Fixes: e5516553999f ("drm: call drm_gem_object_funcs.mmap with fake offset")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220531200857.136547-1-robdclark@gmail.com
Diffstat (limited to 'drivers/gpu/drm/msm/msm_drv.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index fdbaad53eb84..34f74d47b3c1 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -246,6 +246,7 @@ unsigned long msm_gem_shrinker_shrink(struct drm_device *dev, unsigned long nr_t void msm_gem_shrinker_init(struct drm_device *dev); void msm_gem_shrinker_cleanup(struct drm_device *dev); +int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj); int msm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map); void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map); |