diff --git a/0009-Add-lowercase-tcr_el1_t1sz.patch b/0009-Add-lowercase-tcr_el1_t1sz.patch
new file mode 100644
index 0000000..b15c3ad
--- /dev/null
+++ b/0009-Add-lowercase-tcr_el1_t1sz.patch
@@ -0,0 +1,41 @@
+From 3085ad7bf654c2fe1aefe5023d83b91c3c7f8aa8 Mon Sep 17 00:00:00 2001
+From: huskarTang <tanly6@chinatelecom.cn>
+Date: Thu, 29 Dec 2022 11:11:16 +0800
+Subject: [PATCH] arm64: Add lowercase tcr_el1_t1sz
+
+---
+ arm64.c   | 3 ++-
+ netdump.c | 3 ++-
+ 2 files changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/arm64.c b/arm64.c
+index c703dd9..5d76a25 100644
+--- a/arm64.c
++++ b/arm64.c
+@@ -4177,7 +4177,8 @@ arm64_calc_VA_BITS(void)
+ 		} else if (ACTIVE())
+ 			error(FATAL, "cannot determine VA_BITS_ACTUAL: please use /proc/kcore\n");
+ 		else {
+-			if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)"))) {
++			if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)")) ||
++			    (string = pc->read_vmcoreinfo("NUMBER(tcr_el1_t1sz)"))) {
+ 				/* See ARMv8 ARM for the description of
+ 				 * TCR_EL1.T1SZ and how it can be used
+ 				 * to calculate the vabits_actual
+diff --git a/netdump.c b/netdump.c
+index c1c9cbf..aaea945 100644
+--- a/netdump.c
++++ b/netdump.c
+@@ -1921,7 +1921,8 @@ vmcoreinfo_read_string(const char *key)
+ 			sprintf(value, "%ld", nd->arch_data2 & 0xffffffff);
+ 			return value;
+ 		}
+-		if (STREQ(key, "NUMBER(TCR_EL1_T1SZ)") && nd->arch_data2) {
++		if ((STREQ(key, "NUMBER(TCR_EL1_T1SZ)") ||
++		     STREQ(key, "NUMBER(tcr_el1_t1sz)")) && nd->arch_data2) {
+ 			value = calloc(VADDR_PRLEN+1, sizeof(char));
+ 			sprintf(value, "%lld", ((ulonglong)nd->arch_data2 >> 32) & 0xffffffff);
+ 			pc->read_vmcoreinfo = no_vmcoreinfo;
+-- 
+2.7.4
+
diff --git a/crash.spec b/crash.spec
index 42c0db5..174f0ae 100644
--- a/crash.spec
+++ b/crash.spec
@@ -1,6 +1,6 @@
 Name: crash
 Version: 7.3.0
-Release: 8
+Release: 9
 Summary: Linux kernel crash utility.
 License: GPLv3
 URL: https://crash-utility.github.io
@@ -18,6 +18,8 @@ Patch7: 0006-Handle-task_struct-cpu-member-changes-for-kernels-5.1.patch
 Patch8: 0007-crash-7.3.0-sw.patch
 %endif
 Patch9: 0008-arm64-fix-backtraces-of-KASAN-kernel-dumpfile-truncated.patch
+Patch10: 0009-Add-lowercase-tcr_el1_t1sz.patch
+
 
 BuildRequires: ncurses-devel zlib-devel lzo-devel snappy-devel
 BuildRequires: gcc gcc-c++ bison m4
@@ -83,7 +85,10 @@ install -D -m 0644 defs.h %{buildroot}%{_includedir}/%{name}/defs.h
 %{_mandir}/man8/crash.8*
 
 %changelog
-* Wed Dec 28 2022 tanly <tanly6@chinatelecom.cn> - 7.3.0-8
+* Thu Dec 29 2022 huskartang <tanly6@chinatelecom.cn> - 7.3.0-9
+- Add lowercase tcr_el1_t1sz
+
+* Wed Dec 28 2022 huskartang <tanly6@chinatelecom.cn> - 7.3.0-8
 - rename pathes to keep in order
 
 * Thu Dec 1 2022 Ding Hui <dinghui@sangfor.com.cn> - 7.3.0-7