diff --git a/kernel.spec b/kernel.spec
index 3b0ed8db78476577a31f50fc388b1a6cbf968cec..534e00c30861a2dacbe49c07ac835f86721acf5a 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -14,7 +14,7 @@ Summary: The Linux kernel
 %global released_kernel 1
 
 %define rpmversion %{?KVER:%{KVER}}%{?!KVER:4.19.91}
-%define pkgrelease %{?KREL:%{KREL}}%{?!KREL:25.1}
+%define pkgrelease %{?KREL:%{KREL}}%{?!KREL:25.2}
 
 # allow pkg_release to have configurable %%{?dist} tag
 %define specrelease %{pkgrelease}%{?dist}
@@ -1255,6 +1255,7 @@ if [ $rc != 0 ]; then\
     exit $rc\
 fi\
 %{_sbindir}/new-kernel-pkg --package kernel%{?1:-%{1}} --rpmposttrans %{KVRA}%{?1:.%{1}} || exit $?\
+grubby --update-kernel /boot/vmlinuz-%{KVRA}%{?1:.%{1}} --remove-args="crashkernel=auto" --args="crashkernel=0M-2G:0M,2G-8G:192M,8G-:256M"\
 %{nil}
 
 #
@@ -1455,6 +1456,9 @@ fi
 %kernel_variant_files %{with_debug} debug
 
 %changelog
+* Wed Jan  5 2022 Liwei Ge <geliwei@openanolis.org> [4.19.91-25.2.an7]
+- spec: update kdump args for cloud kernel
+
 * Wed Dec 22 2021 Shile Zhang <shile.zhang@linux.alibaba.com> [4.19.91-25.1.an7]
 - drivers/base/memory.c: indicate all memory blocks as removable (Guanghui Feng)
 - anolis: x86: change Makefile to support stack protector (Guanjun)