Messages in this thread | | | Date | Wed, 26 Jan 2022 14:05:32 +0100 | From | Christian Brauner <> | Subject | Re: [PATCH v9 11/23] ima: Move ima_lsm_policy_notifier into ima_namespace |
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On Tue, Jan 25, 2022 at 05:46:33PM -0500, Stefan Berger wrote: > From: Stefan Berger <stefanb@linux.ibm.com> > > Move the ima_lsm_policy_notifier into the ima_namespace. Each IMA > namespace can now register its own LSM policy change notifier callback. > The policy change notifier for the init_ima_ns still remains in init_ima() > and therefore handle the registration of the callback for all other > namespaces in init_ima_namespace(). > > Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> > ---
I'd double-check that this cannot be used to cause rcu stalls when a lot of ima namespace with a lot of rules are used leading to a dos situation during LSM policy update. The good thing at least is that an LSM policy update can only be triggered for selinux for the whole system.
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