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-rw-r--r--security/selinux/hooks.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 55cec4d6f117..e4d81a42fca4 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1689,10 +1689,12 @@ static inline void flush_unauthorized_files(struct files_struct * files)
1689{ 1689{
1690 struct avc_audit_data ad; 1690 struct avc_audit_data ad;
1691 struct file *file, *devnull = NULL; 1691 struct file *file, *devnull = NULL;
1692 struct tty_struct *tty = current->signal->tty; 1692 struct tty_struct *tty;
1693 struct fdtable *fdt; 1693 struct fdtable *fdt;
1694 long j = -1; 1694 long j = -1;
1695 1695
1696 mutex_lock(&tty_mutex);
1697 tty = current->signal->tty;
1696 if (tty) { 1698 if (tty) {
1697 file_list_lock(); 1699 file_list_lock();
1698 file = list_entry(tty->tty_files.next, typeof(*file), f_u.fu_list); 1700 file = list_entry(tty->tty_files.next, typeof(*file), f_u.fu_list);
@@ -1712,6 +1714,7 @@ static inline void flush_unauthorized_files(struct files_struct * files)
1712 } 1714 }
1713 file_list_unlock(); 1715 file_list_unlock();
1714 } 1716 }
1717 mutex_unlock(&tty_mutex);
1715 1718
1716 /* Revalidate access to inherited open files. */ 1719 /* Revalidate access to inherited open files. */
1717 1720