diff --git a/.gitignore b/.gitignore
index 0b38ecc..d19fac2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ noarch/
 /perftest-2.*.tar.gz
 /perftest-2.*/
 /perftest-3.0-0.18.gb464d59.tar.gz
+/perftest-4.2-0.5.gdd28746.tar.gz
diff --git a/0001-Set-default-un-support-for-contig-memory.patch b/0001-Set-default-un-support-for-contig-memory.patch
new file mode 100644
index 0000000..05fc2de
--- /dev/null
+++ b/0001-Set-default-un-support-for-contig-memory.patch
@@ -0,0 +1,36 @@
+From 198473181e0365f97c5840b8fd406ff52af6335b Mon Sep 17 00:00:00 2001
+From: Zohar Ben Aharon <zoharb@mellanox.com>
+Date: Wed, 14 Mar 2018 10:33:59 +0200
+Subject: [PATCH] Set default un-support for contig memory
+
+By default we will not support this since it is EXP verbs supported
+
+Signed-off-by: Zohar Ben Aharon <zoharb@mellanox.com>
+---
+ src/perftest_resources.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/src/perftest_resources.c b/src/perftest_resources.c
+index c983105..c0c098a 100755
+--- a/src/perftest_resources.c
++++ b/src/perftest_resources.c
+@@ -1455,13 +1455,12 @@ int ctx_init(struct pingpong_context *ctx, struct perftest_parameters *user_para
+ 	}
+ 	#endif
+ 
++	ctx->is_contig_supported = FAILURE;
+ 	#ifdef HAVE_VERBS_EXP
+-	ctx->is_contig_supported  = check_for_contig_pages_support(ctx->context);
++	if (!user_param->use_hugepages)
++		ctx->is_contig_supported  = check_for_contig_pages_support(ctx->context);
+ 	#endif
+ 
+-	if (user_param->use_hugepages)
+-		ctx->is_contig_supported = FAILURE;
+-
+ 	/* Allocating an event channel if requested. */
+ 	if (user_param->use_event) {
+ 		ctx->channel = ibv_create_comp_channel(ctx->context);
+-- 
+2.17.0
+
diff --git a/perftest.spec b/perftest.spec
index 6310797..eec2236 100644
--- a/perftest.spec
+++ b/perftest.spec
@@ -1,11 +1,11 @@
 Name:           perftest
 Summary:        IB Performance Tests
-Version:        3.0
-Release:        5%{?dist}
+Version:        4.2
+Release:        1%{?dist}
 License:        GPLv2 or BSD
-Group:          Productivity/Networking/Diagnostic
-Source:         http://www.openfabrics.org/downloads/%{name}/%{name}-%{version}-0.18.gb464d59.tar.gz
-Url:            http://www.openfabrics.org
+Source:         https://github.com/linux-rdma/%{name}/releases/download/V4.2-0.5/perftest-4.2-0.5.gdd28746.tar.gz
+Patch1:         0001-Set-default-un-support-for-contig-memory.patch
+Url:            https://github.com/linux-rdma/perftest
 
 BuildRequires:  libibverbs-devel >= 1.2.0
 BuildRequires:  librdmacm-devel >= 1.0.21
@@ -21,6 +21,7 @@ RDMA networks.
 
 %prep
 %setup -q
+%patch1 -p1
 find src -type f -iname '*.[ch]' -exec chmod a-x '{}' ';'
 
 %build
@@ -38,6 +39,10 @@ done
 %_bindir/*
 
 %changelog
+* Tue Apr 17 2018  Honggang Li <honli@redhat.com> - 4.2-1
+- Rebase to latest upstream release V4.2-0.5
+- Resolves: bz1568309
+
 * Thu Feb 08 2018 Fedora Release Engineering <releng@fedoraproject.org> - 3.0-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
 
diff --git a/sources b/sources
index 4063754..7366071 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-ba6e07afca1fe95d5cdeed6c31ebb31e  perftest-3.0-0.18.gb464d59.tar.gz
+SHA512 (perftest-4.2-0.5.gdd28746.tar.gz) = dee31fe2b7070db61b47e402700c86be32e014cfaa97997f666a5a67cdb30f3e94d9d855181ecd82534579e628b3eb167b37b271e7f379e6a45610a6eb9ccc9c