1 files changed, 5 insertions, 13 deletions

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 9b56b7ae053f..b86cc04959de 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1024,8 +1024,7 @@ static int audit_log_single_execve_arg(struct audit_context *context,
 	 * for strings that are too long, we should not have created
 	 * any.
 	 */
-	if (unlikely((len == 0) || len > MAX_ARG_STRLEN - 1)) {
-		WARN_ON(1);
+	if (WARN_ON_ONCE(len < 0 || len > MAX_ARG_STRLEN - 1)) {
 		send_sig(SIGKILL, current, 0);
 		return -1;
 	}
@@ -1630,7 +1629,7 @@ retry:
 	rcu_read_lock();
 	seq = read_seqbegin(&rename_lock);
 	for(;;) {
-		struct inode *inode = d->d_inode;
+		struct inode *inode = d_backing_inode(d);
 		if (inode && unlikely(!hlist_empty(&inode->i_fsnotify_marks))) {
 			struct audit_chunk *chunk;
 			chunk = audit_tree_lookup(inode);
@@ -1755,7 +1754,7 @@ void __audit_inode(struct filename *name, const struct dentry *dentry,
 		   unsigned int flags)
 {
 	struct audit_context *context = current->audit_context;
-	const struct inode *inode = dentry->d_inode;
+	const struct inode *inode = d_backing_inode(dentry);
 	struct audit_names *n;
 	bool parent = flags & AUDIT_INODE_PARENT;
 
@@ -1854,7 +1853,7 @@ void __audit_inode_child(const struct inode *parent,
 			 const unsigned char type)
 {
 	struct audit_context *context = current->audit_context;
-	const struct inode *inode = dentry->d_inode;
+	const struct inode *inode = d_backing_inode(dentry);
 	const char *dname = dentry->d_name.name;
 	struct audit_names *n, *found_parent = NULL, *found_child = NULL;
 
@@ -2362,7 +2361,6 @@ static void audit_log_task(struct audit_buffer *ab)
 	kuid_t auid, uid;
 	kgid_t gid;
 	unsigned int sessionid;
-	struct mm_struct *mm = current->mm;
 	char comm[sizeof(current->comm)];
 
 	auid = audit_get_loginuid(current);
@@ -2377,13 +2375,7 @@ static void audit_log_task(struct audit_buffer *ab)
 	audit_log_task_context(ab);
 	audit_log_format(ab, " pid=%d comm=", task_pid_nr(current));
 	audit_log_untrustedstring(ab, get_task_comm(comm, current));
-	if (mm) {
-		down_read(&mm->mmap_sem);
-		if (mm->exe_file)
-			audit_log_d_path(ab, " exe=", &mm->exe_file->f_path);
-		up_read(&mm->mmap_sem);
-	} else
-		audit_log_format(ab, " exe=(null)");
+	audit_log_d_path_exe(ab, current->mm);
 }
 
 /**