CVE-2026-64563 rhashtable: clear stale iter->p on table restart

In the Linux kernel, the following vulnerability has been resolved: rhashtable: clear stale iter-p on table restart rhashtablewalkstartcheck has two restart paths when resuming a walk. When iter-walker.tbl is valid, it re-validates iter-p against the table and sets iter-p = NULL if the object is...