locking/rt: Fix the incorrect RCU protection in rt_spin_unlock()

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CVE-2026-72069 · Microsoft / collected KEV context

cve-program · CVE-2026-72069

• https://git.kernel.org/stable/c/af28d801cd2db4cc7378554499bd4a5d84a5517e
• https://git.kernel.org/stable/c/9d1fcd64ab81200e02b7a6db5eb1da8e244e8289
• https://git.kernel.org/stable/c/3cfaac77b3c32ac3940df28866de263c3f45d24c
• https://git.kernel.org/stable/c/1f0d56d3f1e88f20f6e46109402f8c15d59bac37
• https://git.kernel.org/stable/c/633cadbc0b8323f5cc140a285d2432089dbb534e
• https://git.kernel.org/stable/c/83f9fb561c1c3917e19f95523dd933c7d30291aa
• https://git.kernel.org/stable/c/89038cc87d80c77e7aa6f42a64b2573b74af339f

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