diff --git a/llvm/test/tools/obj2yaml/ELF/DWARF/unrecognized-debug-section.yaml b/llvm/test/tools/obj2yaml/ELF/DWARF/unrecognized-debug-section.yaml
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/obj2yaml/ELF/DWARF/unrecognized-debug-section.yaml
@@ -0,0 +1,19 @@
+## Test dumping a debug section that its name is not recognized by yaml2obj.
+
+# RUN: yaml2obj %s | obj2yaml | FileCheck %s --check-prefix=UNRECOGNIZED
+
+#      UNRECOGNIZED: Sections:
+# UNRECOGNIZED-NEXT:   - Name:    .debug_foo
+# UNRECOGNIZED-NEXT:     Type:    SHT_PROGBITS
+# UNRECOGNIZED-NEXT:     Content: '01020304'
+# UNRECOGNIZED-NEXT: ...
+
+--- !ELF
+FileHeader:
+  Class: ELFCLASS64
+  Data:  ELFDATA2LSB
+  Type:  ET_EXEC
+Sections:
+  - Name:    .debug_foo
+    Type:    SHT_PROGBITS
+    Content: '01020304'
diff --git a/llvm/tools/obj2yaml/elf2yaml.cpp b/llvm/tools/obj2yaml/elf2yaml.cpp
--- a/llvm/tools/obj2yaml/elf2yaml.cpp
+++ b/llvm/tools/obj2yaml/elf2yaml.cpp
@@ -15,6 +15,7 @@
 #include "llvm/ObjectYAML/DWARFYAML.h"
 #include "llvm/ObjectYAML/ELFYAML.h"
 #include "llvm/Support/DataExtractor.h"
+#include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/YAMLTraits.h"
 
@@ -416,6 +417,11 @@
         Err = dumpDebugARanges(*DWARFCtx.get(), DWARF);
       else if (RawSec->Name == ".debug_str")
         Err = dumpDebugStrings(*DWARFCtx.get(), DWARF);
+      else
+        Err =
+            createStringError(errc::not_supported,
+                              "the parser for the %s section is not supported",
+                              RawSec->Name.str().c_str());
 
       // If the DWARF section cannot be successfully parsed, emit raw content
       // instead of an entry in the DWARF section of the YAML.