BUG: audit_context isn't needed when !CONFIG_AUDITSYSCALL

[rgbriggs]

audit_context is not used in struct task_struct when AUDITSYSCALL is disabled. audit_alloc() is stubbed in that case to return 0. audit_context() returns NULL.

The fact that audit_context is still present in struct task_struct appears to be an oversight in the two patches:

• cdfb6b341f0f ("audit: use inline function to get audit context")
• c0b0ae8a871b ("audit: use inline function to set audit context") that failed to hide or remove it from struct task_struct when it was no longer relevant.

[pcmoore]

@rgb assigning this to you because I'm assuming you want this, if not just let me know.

[rgbriggs]

Post v1 https://www.redhat.com/archives/linux-audit/2019-January/msg00079.html https://lkml.org/lkml/2019/1/22/1022

[rgbriggs]

v1.1/2 Staged in audit/next v5.0-rc1: 05c7a9cb2727 ("audit: clean up AUDITSYSCALL prototypes and stubs")

[rgbriggs]

Post v2 https://www.redhat.com/archives/linux-audit/2019-January/msg00118.html https://lkml.org/lkml/2019/1/28/1779

[rgbriggs]

v3 (was v1.2/2) staged in audit/next v5.0-rc1: 5f3d544f1671 ('audit: remove auditcontext when CONFIG AUDIT and not AUDITSYSCALL")

[rgbriggs]

2019-01-05: Post v3 supplemental: ("audit: hide auditsc_get_stamp and audit_serial prototypes") https://www.redhat.com/archives/linux-audit/2019-February/msg00015.html

[rgbriggs]

Staged in audit/next v5.0-rc1: cd108b5c51db ("audit: hide auditsc_get_stamp and audit_serial prototypes")