Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit

Pull audit fixes from Paul Moore:
 "Two small patches to fix some bugs with the audit-by-executable
  functionality we introduced back in v4.3 (both patches are marked
  for the stable folks)"

* 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit:
  audit: fix exe_file access in audit_exe_compare
  mm: introduce get_task_exe_file

1 files changed, 1 insertions, 6 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 54e270262979..ac0df4dde823 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1556,18 +1556,13 @@ static const struct file_operations proc_pid_set_comm_operations = {
 static int proc_exe_link(struct dentry *dentry, struct path *exe_path)
 {
         struct task_struct *task;
-        struct mm_struct *mm;
         struct file *exe_file;
 
         task = get_proc_task(d_inode(dentry));
         if (!task)
                 return -ENOENT;
-        mm = get_task_mm(task);
+        exe_file = get_task_exe_file(task);
         put_task_struct(task);
-        if (!mm)
-                return -ENOENT;
-        exe_file = get_mm_exe_file(mm);
-        mmput(mm);
         if (exe_file) {
                 *exe_path = exe_file->f_path;
                 path_get(&exe_file->f_path);