CVE-2026-98117 cachefiles: Fix potential UAF/KASAN warning

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix potential UAF/KASAN warning Currently, tracecachefilescoherency is being passed a pointer to a be64 lain over the coherency data in struct cachefilesxattr so that it can display the first 8 bytes. However, the dat...