A potential issue in security_inode_init_security function

[Boshi Wang]

In security_inode_init_security function of security/security.c, lsm_xattr can be modified by multiple functions due to call_init_hook function. I think that it is a potential issue when inode_init_security list is associated with more security modules, although inode_init_security list is associated with only selinux and smack currrently and the two security modules usually are not used at the same time.


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