On Mon, Apr 18, 2022 at 11:12 AM Casey Schaufler [off-list ref] wrote:

Create a new audit record AUDIT_MAC_TASK_CONTEXTS.
An example of the MAC_TASK_CONTEXTS (1420) record is:

    type=MAC_TASK_CONTEXTS[1420]
    msg=audit(1600880931.832:113)
    subj_apparmor=unconfined
    subj_smack=_

When an audit event includes a AUDIT_MAC_TASK_CONTEXTS record
the "subj=" field in other records in the event will be "subj=?".
An AUDIT_MAC_TASK_CONTEXTS record is supplied when the system has
multiple security modules that may make access decisions based
on a subject security context.

Functions are created to manage the skb list in the audit_buffer.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/uapi/linux/audit.h |  1 +
 kernel/audit.c             | 93 +++++++++++++++++++++++++++++++++++---
 2 files changed, 88 insertions(+), 6 deletions(-)

The audit_buffer_aux_new() and audit_buffer_aux_end() belong in patch
25/29, but otherwise this looks okay.

Acked-by: Paul Moore <paul@paul-moore.com>

-- 
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