fs/proc: fix softlockup in __read_vmcore (part 2)

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

CVE-2025-21694 · Microsoft / collected KEV context

cve-program · CVE-2025-21694

• https://git.kernel.org/stable/c/84c4ed15626574c9ac6c1039ba9c137a77bcc7f2
• https://git.kernel.org/stable/c/80da29deb88a3a907441fc35bb7bac309f31e713
• https://git.kernel.org/stable/c/649b266606bc413407ce315f710c8ce8a88ee30a
• https://git.kernel.org/stable/c/65c367bd9d4f43513c7f837df5753bea9561b836
• https://git.kernel.org/stable/c/a5a2ee8144c3897d37403a69118c3e3dc5713958
• https://git.kernel.org/stable/c/80828540dad0757b6337c6561d49c81038f38d87
• https://git.kernel.org/stable/c/cbc5dde0a461240046e8a41c43d7c3b76d5db952

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