powerpc/kprobes: Fix null pointer reference in archpreparekprobe()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.75 by commit 7f536a8cb62dd5c084f112373fc34cdb5168a813, it was introduced in version v5.8 by commit b4657f7650babc9bfb41ce875abe41b18604a105. For more details please see the references link.