CVE-2023-53545

CVE-2023-53545 affects the Linux kernel DRM/AMDGPU path. The issue arises when unmapping/removing csa_va during VM operations: the Root PD BO must be reserved before unmapping a bo_va to prevent lockdep warnings. The v2 fix changes the NULL-check from amdgpu_mcbp to fpriv->csa_va. Consequence ...