[edk2-devel] [PATCH 1/1] MdeModulePkg:Add variable store exceed maximum debug info

["Zhenyu Zhang" <zhenyzha@redhat.com>]

From: "Zhenyu Zhang" <zhenyzha@redhat.com>

When the variable store is full, edk2 will directly assert.
Add debug information to help users understand what caused
the assertion.

 Actual results:
 RecordVarErrorFlag (0xEF) 9A144FE2A47E:937FE521-95AE-4D1A-8929-
 48BCD90AD31A - 0x00000003 - 0x7E
 CommonVariableSpace = 0x3FF9C - CommonVariableTotalSize =
 0x3FF98
 RecordVarErrorFlag (0xEF) 9A144FE2A47E:937FE521-95AE-4D1A-8929-
 48BCD90AD31A - 0x00000003 - 0x92
 CommonVariableSpace = 0x3FF9C - CommonVariableTotalSize = 0x3FF98

 Synchronous Exception at 0x000000023CA60374
 ......
 ASSERT [ArmCpuDxe] /builddir/build/BUILD/edk2-f80f052277c8/ArmPkg/
 Library/DefaultExceptionHandlerLib/AArch64/
 DefaultExceptionHandler.c(333): ((BOOLEAN) (0==1))

Signed-off-by: Zhenyu Zhang <zhenyzha@redhat.com>
---
 MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index 7a1331255b81..901112ac5961 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -1943,6 +1943,7 @@ UpdateVariable (
           // Existing data size + new data size exceed maximum variable size limitation.

           //

           Status = EFI_INVALID_PARAMETER;

+          DEBUG ((DEBUG_ERROR, "ERROR: The variable store exceed maximum variable size limitation.\n"));

           goto Done;

         }

 

-- 
2.39.3



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