iomap: fix out-of-bounds bitmap_set() with zero-length range

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CVE-2026-68145 · Microsoft / collected KEV context

cve-program · CVE-2026-68145

• https://git.kernel.org/stable/c/48829622212f6b8f49155889aecc818ba28ba680
• https://git.kernel.org/stable/c/fb4fad9105c88b1d82f1b3c39e3b6abea8249af6
• https://git.kernel.org/stable/c/7037e7bdcd26f46c080b8ce307dee5cb471c4b7c
• https://git.kernel.org/stable/c/c5b6a48a8a716a7730e39af1cad083dc4ec955ce
• https://git.kernel.org/stable/c/9c7d8f7c8994c790fca501dc45ce66e7356cbe05

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