netfs, fscache: Prevent Oops in fscache_put_cache()

Pavel Reichlrequested to merge
preichl1/centos-stream-9:c9s into main

JIRA: https://issues.redhat.com/browse/RHEL-28890

CVE: CVE-2024-26612

Signed-off-by: Pavel Reichl preichl@redhat.com

Edited by Pavel Reichl

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