diff --git a/.gitignore b/.gitignore
index afbfd41..2235e7f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /libpsm2-10.2.103_1.tar.gz
 /libpsm2-10.3.8.tar.gz
 /libpsm2-10.3.58.tar.gz
+/libpsm2-11.2.23.tar.gz
diff --git a/extend-fdesc-array.patch b/extend-fdesc-array.patch
deleted file mode 100644
index 4729057..0000000
--- a/extend-fdesc-array.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- psm_utils.c.orig	2018-03-14 21:12:33.678607767 -0400
-+++ psm_utils.c	2018-03-14 21:11:04.696909162 -0400
-@@ -951,7 +951,7 @@ struct psmi_faultinj_spec *psmi_faultinj
- 		union psmi_envvar_val env_fi;
- 		char fvals_str[128];
- 		char fname[128];
--		char fdesc[256];
-+		char fdesc[512];
- 
- 		snprintf(fvals_str, sizeof(fvals_str) - 1, "%d:%d:1", num,
- 			 denom);
diff --git a/libpsm2-10.2.2.tar.gz b/libpsm2-10.2.2.tar.gz
deleted file mode 100644
index e307426..0000000
Binary files a/libpsm2-10.2.2.tar.gz and /dev/null differ
diff --git a/libpsm2.spec b/libpsm2.spec
index 2a49bc1..a4ecba0 100644
--- a/libpsm2.spec
+++ b/libpsm2.spec
@@ -52,18 +52,17 @@
 #
 Summary: Intel PSM Libraries
 Name: libpsm2
-Version: 10.3.58
-Release: 2%{?dist}
+Version: 11.2.23
+Release: 1%{?dist}
 License: BSD or GPLv2
 URL: https://github.com/01org/opa-psm2/
 
 # The tarball can be created by:
 # git clone https://github.com/01org/opa-psm2
 # cd opa-psm2
-# git checkout 0f9213e7af8d32c291d4657ff4a3279918de1e60
+# git checkout 8a12e84dc7e3a89eb81f7d0d2fba13c5d9d9c484
 # make dist
 Source0: %{name}-%{version}.tar.gz
-Patch1:  extend-fdesc-array.patch
 
 # The OPA product is supported on x86 64 only:
 ExclusiveArch: x86_64
@@ -102,7 +101,6 @@ Support for MPIs linked with PSM versions < 2
 
 %prep
 %setup -q
-%patch1 -p0
 
 %build
 %{set_build_flags}
@@ -143,6 +141,10 @@ rm -f %{buildroot}%{_libdir}/*.a
 %endif
 
 %changelog
+* Mon Oct  8 2018 Honggang Li <honli@redhat.com> - 11.2.23-1
+- Rebase to latest upstream release 11.2.23
+- Resolves: bz1637273
+
 * Fri Jul 13 2018 Fedora Release Engineering <releng@fedoraproject.org> - 10.3.58-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild
 
diff --git a/sources b/sources
index c5a390e..b8ceba4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libpsm2-10.3.58.tar.gz) = 764237a32d95b2f8a000cbd6e23325e7962712f8ffa540248f87583c11860f13adf277cf6503bf3fe470a6876546a1307eefce6034241351c77a5ec450ea65db
+SHA512 (libpsm2-11.2.23.tar.gz) = eab7001051adde8ac4cd683ec35c91f21ddd05a6194864e1d19a2cc1bebcd9044a461dc366e12ccbebc0a66039d86910583a9b4b4777b2f47aa09877d3a48841