diff --git a/autofs-5.1.4-fix-deadlock-in-dumpmaps.patch b/autofs-5.1.4-fix-deadlock-in-dumpmaps.patch
new file mode 100644
index 0000000..12bd077
--- /dev/null
+++ b/autofs-5.1.4-fix-deadlock-in-dumpmaps.patch
@@ -0,0 +1,40 @@
+autofs-5.1.4 - fix deadlock in dumpmaps
+
+From: Ian Kent <raven@themaw.net>
+
+Commit a223d11fa8e (autofs-5.1.3 - serialize calls to open_xxxx()
+functions) introduces a deadlock when using the dumpmaps function.
+
+In this case the open fd mutex needs to be unlocked in the forked
+child process of the do_spawn() function.
+
+Signed-off-by: Ian Kent <raven@themaw.net>
+---
+ CHANGELOG      |    1 +
+ daemon/spawn.c |    1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/CHANGELOG b/CHANGELOG
+index 2747327b..0f30596f 100644
+--- a/CHANGELOG
++++ b/CHANGELOG
+@@ -2,6 +2,7 @@ xx/xx/2018 autofs-5.1.5
+ - fix flag file permission.
+ - fix directory create permission.
+ - fix use after free in do_master_list_reset().
++- fix deadlock in dumpmaps.
+ 
+ 19/12/2017 autofs-5.1.4
+ - fix spec file url.
+diff --git a/daemon/spawn.c b/daemon/spawn.c
+index fabe577e..dbbca7fa 100644
+--- a/daemon/spawn.c
++++ b/daemon/spawn.c
+@@ -338,6 +338,7 @@ static int do_spawn(unsigned logopt, unsigned int wait,
+ 		dup2(pipefd[1], STDOUT_FILENO);
+ 		dup2(pipefd[1], STDERR_FILENO);
+ 		close(pipefd[1]);
++		open_mutex_unlock();
+ 
+ 		/* what to mount must always be second last */
+ 		while (*pargv++)
diff --git a/autofs.spec b/autofs.spec
index 74f5287..43e84e1 100644
--- a/autofs.spec
+++ b/autofs.spec
@@ -8,7 +8,7 @@
 Summary: A tool for automatically mounting and unmounting filesystems
 Name: autofs
 Version: 5.1.4
-Release: 4%{?dist}
+Release: 5%{?dist}
 Epoch: 1
 License: GPLv2+
 Group: System Environment/Daemons
@@ -16,6 +16,7 @@ Source: https://www.kernel.org/pub/linux/daemons/autofs/v5/autofs-%{version}.tar
 Patch1: autofs-5.1.4-fix-flag-file-permission.patch
 Patch2: autofs-5.1.4-fix-directory-create-permission.patch
 Patch3: autofs-5.1.4-fix-use-after-free-in-do_master_list_reset.patch
+Patch4: autofs-5.1.4-fix-deadlock-in-dumpmaps.patch
 
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -78,6 +79,8 @@ echo %{version}-%{release} > .version
 %endif
 %patch1 -p1
 %patch2 -p1
+%patch3 -p1
+%patch4 -p1
 
 %build
 LDFLAGS=-Wl,-z,now
@@ -171,6 +174,10 @@ fi
 %dir /etc/auto.master.d
 
 %changelog
+* Wed Jan 10 2018 Ian Kent <ikent@redhat.com> - 1:5.1.4-5
+- actually apply fix use after free in do_master_list_reset().
+- fix deadlock in dumpmaps.
+
 * Fri Dec 22 2017 Ian Kent <ikent@redhat.com> - 1:5.1.4-4
 - fix use after free in do_master_list_reset().