ftrace: Also allocate and copy hash for reading of filter files

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2025-39689 · Microsoft / collected KEV context

cve-program · CVE-2025-39689

• https://git.kernel.org/stable/c/12064e1880fc9202be75ff668205b1703d92f74f
• https://git.kernel.org/stable/c/c4cd93811e038d19f961985735ef7bb128078dfb
• https://git.kernel.org/stable/c/e0b6b223167e1edde5c82edf38e393c06eda1f13
• https://git.kernel.org/stable/c/a40c69f4f1ed96acbcd62e9b5ff3a596f0a91309
• https://git.kernel.org/stable/c/3b114a3282ab1a12cb4618a8f45db5d7185e784a
• https://git.kernel.org/stable/c/c591ba1acd081d4980713e47869dd1cc3d963d19
• https://git.kernel.org/stable/c/64db338140d2bad99a0a8c6a118dd60b3e1fb8cb
• https://git.kernel.org/stable/c/bfb336cf97df7b37b2b2edec0f69773e06d11955

No related operational record is retained in the current change model.