[PATCH] SELinux: fix deadlock on dcache lock

[mirror_ubuntu-zesty-kernel.git] / kernel / auditsc.c

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 8c454852d6a52a8cb9e37f75b90e68ca61d7cd28..6f1931381bc9eae1ff454c943036c5b077c4a8a6 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -610,6 +610,33 @@ static inline void audit_free_context(struct audit_context *context)
                printk(KERN_ERR "audit: freed %d contexts\n", count);
 }
 
+static void audit_log_task_info(struct audit_buffer *ab)
+{
+       char name[sizeof(current->comm)];
+       struct mm_struct *mm = current->mm;
+       struct vm_area_struct *vma;
+
+       get_task_comm(name, current);
+       audit_log_format(ab, " comm=%s", name);
+
+       if (!mm)
+               return;
+
+       down_read(&mm->mmap_sem);
+       vma = mm->mmap;
+       while (vma) {
+               if ((vma->vm_flags & VM_EXECUTABLE) &&
+                   vma->vm_file) {
+                       audit_log_d_path(ab, "exe=",
+                                        vma->vm_file->f_dentry,
+                                        vma->vm_file->f_vfsmnt);
+                       break;
+               }
+               vma = vma->vm_next;
+       }
+       up_read(&mm->mmap_sem);
+}
+
 static void audit_log_exit(struct audit_context *context)
 {
        int i;
@@ -639,6 +666,7 @@ static void audit_log_exit(struct audit_context *context)
                  context->gid,
                  context->euid, context->suid, context->fsuid,
                  context->egid, context->sgid, context->fsgid);
+       audit_log_task_info(ab);
        audit_log_end(ab);
        while (context->aux) {
                struct audit_aux_data *aux;