CVE-2024-41008

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdgpu: change vm-&gt;task_info handling<br /> <br /> This patch changes the handling and lifecycle of vm-&gt;task_info object.<br /> The major changes are:<br /> - vm-&gt;task_info is a dynamically allocated ptr now, and its uasge is<br /> reference counted.<br /> - introducing two new helper funcs for task_info lifecycle management<br /> - amdgpu_vm_get_task_info: reference counts up task_info before<br /> returning this info<br /> - amdgpu_vm_put_task_info: reference counts down task_info<br /> - last put to task_info() frees task_info from the vm.<br /> <br /> This patch also does logistical changes required for existing usage<br /> of vm-&gt;task_info.<br /> <br /> V2: Do not block all the prints when task_info not found (Felix)<br /> <br /> V3: Fixed review comments from Felix<br /> - Fix wrong indentation<br /> - No debug message for -ENOMEM<br /> - Add NULL check for task_info<br /> - Do not duplicate the debug messages (ti vs no ti)<br /> - Get first reference of task_info in vm_init(), put last<br /> in vm_fini()<br /> <br /> V4: Fixed review comments from Felix<br /> - fix double reference increment in create_task_info<br /> - change amdgpu_vm_get_task_info_pasid<br /> - additional changes in amdgpu_gem.c while porting