diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugFrame.cpp
@@ -1138,6 +1138,10 @@
             // B-Key is used for signing functions associated with this
             // augmentation string
             break;
+            // This stack frame contains MTE tagged data, so needs to be
+            // untagged on unwind.
+          case 'G':
+            break;
           }
         }
 
diff --git a/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s b/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/DebugInfo/AArch64/stack-tagging-cfi.s
@@ -0,0 +1,18 @@
+# REQUIRES: aarch64-registered-target
+
+# RUN: llvm-mc -filetype=obj -triple aarch64-elfs -mattr=+mte %s -o %t.o
+# RUN: llvm-dwarfdump --eh-frame %t.o | FileCheck %s
+
+# CHECK: Augmentation:          "zRG"
+
+	.text
+	.globl	WithUnwind
+	.p2align	2
+	.type	WithUnwind,@function
+WithUnwind:
+	.cfi_startproc
+	.cfi_mte_tagged_frame
+	ret
+.Lfunc_end0:
+	.size	WithUnwind, .Lfunc_end0-WithUnwind
+	.cfi_endproc