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SubjectRe: [PATCH] integrity: fix IMA inode leak
On Sat, 2009-06-06 at 14:18 -0700, Linus Torvalds wrote:
> On Sat, 6 Jun 2009, Hugh Dickins wrote:
> >
> > CONFIG_IMA=y inode activity leaks iint_cache and radix_tree_node objects
> > until the system runs out of memory. Nowhere is calling ima_inode_free()
> > a.k.a. ima_iint_delete(). Fix that by calling it from destroy_inode().
> Shouldn't we call it from "security_inode_free()" instead? And shouldn't
> it be allocated in "security_inode_alloc()"? That sounds like the correct
> nesting here, since the whole integrity thing is under the security
> module.
> Hmm?
> Linus

Mandatory Access Control(MAC) modules (i.e. SELinux, smack, etc) and
integrity (i.e IMA) are two different aspects of security. The LSM
hooks, which includes security_inode_free(), are used to implement MAC,
not integrity.

Mimi Zohar

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