CVE-2025-39706

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Destroy KFD debugfs after destroy KFD wq

Since KFD proc content was moved to kernel debugfs, we can't destroy KFD

debugfs before kfd_process_destroy_wq. Move kfd_process_destroy_wq prior

to kfd_debugfs_fini to fix a kernel NULL pointer problem. It happens

when /sys/kernel/debug/kfd was already destroyed in kfd_debugfs_fini but

kfd_process_destroy_wq calls kfd_debugfs_remove_process. This line

debugfs_remove_recursive(entry->proc_dentry);

tries to remove /sys/kernel/debug/kfd/proc/<pid> while

/sys/kernel/debug/kfd is already gone. It hangs the kernel by kernel

NULL pointer.

(cherry picked from commit 0333052d90683d88531558dcfdbf2525cc37c233)