diff options
| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-10-30 18:44:12 +0300 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-11-02 13:53:57 +0300 |
| commit | 444bbba708e804c13ad757068d1cb31ed6460754 (patch) | |
| tree | 14030bfb4b2a36beeb838b3d75766b54b4596aa5 /drivers/ptp | |
| parent | d3292daee319581d0a502fcd8ef3c3c285a1750a (diff) | |
| download | linux-444bbba708e804c13ad757068d1cb31ed6460754.tar.xz | |
drm/client: Prevent NULL dereference in drm_client_buffer_delete()
The drm_gem_vunmap() will crash with a NULL dereference if the passed
object pointer is NULL. It wasn't a problem before we added the locking
support to drm_gem_vunmap function because the mapping argument was always
NULL together with the object. Make drm_client_buffer_delete() to check
whether GEM is NULL before trying to unmap the GEM, it will happen on
framebuffer creation error.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/dri-devel/Y1kFEGxT8MVlf32V@kili/
Fixes: 79e2cf2e7a19 ("drm/gem: Take reservation lock for vmap/vunmap operations")
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221030154412.8320-3-dmitry.osipenko@collabora.com
Diffstat (limited to 'drivers/ptp')
0 files changed, 0 insertions, 0 deletions