diff --git a/glibc-rh1673018.patch b/glibc-rh1673018.patch
new file mode 100644
index 0000000..1ab4a09
--- /dev/null
+++ b/glibc-rh1673018.patch
@@ -0,0 +1,17 @@
+Work around an LRA bug on ppc64le:
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1673018
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89225
+
+diff --git a/sysdeps/ieee754/ldbl-128ibm/Makefile b/sysdeps/ieee754/ldbl-128ibm/Makefile
+index bdba6cc6b57e763e..54d12559f491d004 100644
+--- a/sysdeps/ieee754/ldbl-128ibm/Makefile
++++ b/sysdeps/ieee754/ldbl-128ibm/Makefile
+@@ -13,4 +13,7 @@ ifeq ($(subdir),math)
+ tests += test-fmodl-ldbl-128ibm test-remainderl-ldbl-128ibm \
+ 	 test-remquol-ldbl-128ibm test-canonical-ldbl-128ibm \
+ 	 test-totalorderl-ldbl-128ibm
++
++# Work around #1673018 (GCC PR 89225): LRA hang on ppc64le in GCC 9.0.
++CFLAGS-e_sqrtl.c += -fno-stack-protector
+ endif
diff --git a/glibc.spec b/glibc.spec
index ff9a499..eba2f98 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -87,7 +87,7 @@
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -158,6 +158,7 @@ Patch18: glibc-c-utf8-locale.patch
 Patch23: glibc-python3.patch
 Patch28: glibc-rh1615608.patch
 Patch29: glibc-rh1670028.patch
+Patch30: glibc-rh1673018.patch
 
 ##############################################################################
 # Continued list of core "glibc" package information:
@@ -1889,6 +1890,9 @@ fi
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Thu Feb  7 2019 Florian Weimer <fweimer@redhat.com> - 2.29-4
+- Work around LRA hang on ppc64le (#1673018)
+
 * Wed Feb 06 2019 Florian Weimer <fweimer@redhat.com> - 2.29-3
 - Auto-sync with upstream branch release/2.29/master,
   commit 2de15ac95713a238dc258eb8977ecdfca811fc19: