cachefiles: unmark inode in use in error path

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: unmark inode in use in error path Unmark inode in use if error encountered. If the in-use flag leakage occurs in cachefiles_open_file(), Cachefiles will complain "Inode already in use" when later another cookie with the same index key is looked up. If the in-use flag leakage occurs in cachefiles_create_tmpfile(), though the "Inode already in use" warning won't be triggered, fix the leakage anyway.

References

• https://git.kernel.org/stable/c/b2055abafd3d4ee0376fb3eed5cae866316995a1
• https://git.kernel.org/stable/c/ea5dc046127e857a7873ae55fd57c866e9e86fb2