CVE-2024-35797 mm: cachestat: fix two shmem bugs

In the Linux kernel, the following vulnerability has been resolved: mm: cachestat: fix two shmem bugs When cachestat on shmem races with swapping and invalidation, there are two possible bugs: 1 A swapin error can have resulted in a poisoned swap entry in the shmem inode's xarray. Calling...