diff --git a/scripts/kernel-functions b/scripts/kernel-functions
index 3a6a0d552..38233802d 100644
--- a/scripts/kernel-functions
+++ b/scripts/kernel-functions
@@ -119,9 +119,9 @@ function extract_kernel_tree {
 	{ extract_kernel_archive "$kver" && mv "linux-$kver" "linux-$1"; } ||
 	return $?
     fi
-    mv "linux-$1" ".." || return $?
+    mv "linux-$1" .. || return $?
     cd "../linux-$1" || return $?
-  )
+  ) || return $?
   rmdir "${tmpdir}"
 }
 
@@ -784,16 +784,18 @@ function download_and_extract_distro_rpm {
 		CentOS)
 		    rpm2cpio "${kernel_downloads}/kernel-${kver}.src.rpm" |
 			cpio -i --make-directories --quiet &&
-			tar xaf "linux-${kver}.tar."* &&
-			mv "linux-${kver}" ".." &&
-			cd "../linux-${kver}"
+			tar xaf "linux-${kver}"*.tar.* &&
+			if [ -e "linux-${kver}" ]; then
+			    mv "linux-${kver}" ..
+			else
+			    mv "linux-${kver}"*[^z] "../linux-${kver}"
+			fi
 		    ;;
 		UEK)
 		    rpm2cpio "${kernel_downloads}/kernel-uek-${kver}.src.rpm" |
 			cpio -i --make-directories --quiet &&
 			tar xaf "linux-${kver/-*}.tar."* &&
-			mv "linux-${kver/-*}" "../linux-${kver}" &&
-			cd "../linux-${kver}"
+			mv "linux-${kver/-*}" "../linux-${kver}"
 		    ;;
 		*)
 		    echo "Error: unknown distro $distro"
diff --git a/scripts/run-regression-tests b/scripts/run-regression-tests
index 3520f1d55..f3a89cdbe 100755
--- a/scripts/run-regression-tests
+++ b/scripts/run-regression-tests
@@ -291,6 +291,7 @@ CONFIG_IRQSOFF_TRACER				\
 CONFIG_IWLWIFI_DEVICE_TRACING			\
 CONFIG_IWM_TRACING				\
 CONFIG_KALLMODSYMS				\
+CONFIG_KCOV					\
 CONFIG_KVM_MMU_AUDIT				\
 CONFIG_MAC80211_DRIVER_API_TRACER		\
 CONFIG_MMIOTRACE				\
@@ -678,11 +679,13 @@ do
   k="${kv}"
 
   generate_kernel_patch "$k" "${generate_kernel_patch_options}" || continue
-  (
+  if ! (
       cd "${outputdir}" &&
 	  download_and_extract_kernel_tree "$k"
-  ) ||
+  ); then
+      echo "Error: download_and_extract_kernel_tree $k failed"
       continue
+  fi
   k="${k/^*}"
   if [ "${run_checkpatch}" = "true" ]; then
     run_checkpatch "$k"
diff --git a/scripts/specialize-patch b/scripts/specialize-patch
index 49f51816a..b10dd5967 100755
--- a/scripts/specialize-patch
+++ b/scripts/specialize-patch
@@ -96,7 +96,8 @@ function evaluate(stmnt, pattern, arg, op, result) {
        "RHEL_RELEASE_CODE -0 < 7 * 256 + 5)", stmnt)
 
   gsub("IB_CLIENT_ADD_ONE_RETURNS_INT",
-       "(LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0))", stmnt)
+       "(LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0) || " \
+       "RHEL_RELEASE_CODE -0 >= 8 * 256 + 4)", stmnt)
 
   gsub("defined\\(IB_CLIENT_REMOVE_TAKES_TWO_ARGS\\)",
        "(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0) || " \
@@ -165,7 +166,8 @@ function evaluate(stmnt, pattern, arg, op, result) {
        "RHEL_RELEASE_CODE -0 < 8 * 256 + 2)", stmnt)
 
   gsub("RDMA_REJECT_HAS_FOUR_ARGS",
-       "(LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0))", stmnt)
+       "(LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0) || " \
+       "RHEL_RELEASE_CODE -0 >= 8 * 256 + 4)", stmnt)
 
   gsub("defined(ENABLE_NPIV)", 0, stmnt)