1 files changed, 1 insertions, 0 deletions

diff --git a/fs/open.c b/fs/open.c
index 89e0c237a636..3b56192816ca 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1087,6 +1087,7 @@ EXPORT_SYMBOL(sys_close);
 asmlinkage long sys_vhangup(void)
 {
         if (capable(CAP_SYS_TTY_CONFIG)) {
+                /* XXX: this needs locking */
                 tty_vhangup(current->signal->tty);
                 return 0;
         }