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authorPaul Moore <paul@paul-moore.com>2016-08-30 17:19:13 -0400
committerPaul Moore <paul@paul-moore.com>2016-08-30 17:19:13 -0400
commitfa2bea2f5cca5b8d4a3e5520d2e8c0ede67ac108 (patch)
treea7f49ec5a58e527f6a50cac7a628561688007629 /kernel/audit.c
parent523d939ef98fd712632d93a5a2b588e477a7565e (diff)
downloadlinux-fa2bea2f5cca5b8d4a3e5520d2e8c0ede67ac108.tar.gz
audit: consistently record PIDs with task_tgid_nr()
Unfortunately we record PIDs in audit records using a variety of
methods despite the correct way being the use of task_tgid_nr().
This patch converts all of these callers, except for the case of
AUDIT_SET in audit_receive_msg() (see the comment in the code).

Reported-by: Jeff Vander Stoep <jeffv@google.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index 8d528f9930da..02bde12685bd 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -877,6 +877,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 				return err;
 		}
 		if (s.mask & AUDIT_STATUS_PID) {
+			/* NOTE: we are using task_tgid_vnr() below because
+			 *       the s.pid value is relative to the namespace
+			 *       of the caller; at present this doesn't matter
+			 *       much since you can really only run auditd
+			 *       from the initial pid namespace, but something
+			 *       to keep in mind if this changes */
 			int new_pid = s.pid;
 			pid_t requesting_pid = task_tgid_vnr(current);
 
@@ -1917,7 +1923,7 @@ void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
 			 " euid=%u suid=%u fsuid=%u"
 			 " egid=%u sgid=%u fsgid=%u tty=%s ses=%u",
 			 task_ppid_nr(tsk),
-			 task_pid_nr(tsk),
+			 task_tgid_nr(tsk),
 			 from_kuid(&init_user_ns, audit_get_loginuid(tsk)),
 			 from_kuid(&init_user_ns, cred->uid),
 			 from_kgid(&init_user_ns, cred->gid),