linux-kernel - Re: [PATCH 03/3] apparmor: remove parent task info from audit logging

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Message-ID: <5221201D.9060109@canonical.com>
Date:	Fri, 30 Aug 2013 15:43:41 -0700
From:	John Johansen <john.johansen@...onical.com>
To:	John Johansen <john.johansen@...onical.com>
CC:	Richard Guy Briggs <rgb@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>, linux-audit@...hat.com,
	linux-kernel@...r.kernel.org, Eric Paris <eparis@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"Serge E. Hallyn" <serge@...lyn.com>
Subject: Re: [PATCH 03/3] apparmor: remove parent task info from audit logging

The reporting of the parent task info is a vestage from old versions of
apparmor. The need for this information was removed by unique null-
profiles before apparmor was upstreamed so remove this info from logging.

Signed-off-by: John Johansen <john.johansen@...onical.com>
---
 security/apparmor/audit.c         | 6 ------
 security/apparmor/include/audit.h | 1 -
 2 files changed, 7 deletions(-)

diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
index e32c448..89c7865 100644
--- a/security/apparmor/audit.c
+++ b/security/apparmor/audit.c
@@ -111,7 +111,6 @@ static const char *const aa_audit_type[] = {
 static void audit_pre(struct audit_buffer *ab, void *ca)
 {
 	struct common_audit_data *sa = ca;
-	struct task_struct *tsk = sa->u.tsk ? sa->u.tsk : current;
 
 	if (aa_g_audit_header) {
 		audit_log_format(ab, "apparmor=");
@@ -132,11 +131,6 @@ static void audit_pre(struct audit_buffer *ab, void *ca)
 
 	if (sa->aad->profile) {
 		struct aa_profile *profile = sa->aad->profile;
-		pid_t pid;
-		rcu_read_lock();
-		pid = rcu_dereference(tsk->real_parent)->pid;
-		rcu_read_unlock();
-		audit_log_format(ab, " parent=%d", pid);
 		if (profile->ns != root_ns) {
 			audit_log_format(ab, " namespace=");
 			audit_log_untrustedstring(ab, profile->ns->base.hname);
diff --git a/security/apparmor/include/audit.h b/security/apparmor/include/audit.h
index 69d8cae..cf65443 100644
--- a/security/apparmor/include/audit.h
+++ b/security/apparmor/include/audit.h
@@ -110,7 +110,6 @@ struct apparmor_audit_data {
 	void *profile;
 	const char *name;
 	const char *info;
-	struct task_struct *tsk;
 	union {
 		void *target;
 		struct {
-- 
1.8.3.2


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