In nv17_tv_get_ld_modes(), the return value of drm_mode_duplicate() is assigned to mode, which will lead to a possible NULL pointer dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.
Can a wording approach (like the following) be a better change description?
A null pointer is stored in the local variable “mode” after a call of the function “drm_mode_duplicate” failed. This pointer was used in a subsequent statement where an undesirable dereference will be performed then. Thus add a corresponding return value check.
Cc: stable@vger.kernel.org
Would you like to add the tag “Fixes” accordingly?
How do you think about to use a summary phrase like “Prevent null pointer dereference in nv17_tv_get_ld_modes()”?
Regards, Markus