In file /edk2-test/uefi-sct/EMS/Src/EmsRpc/EmsRpcEth.c, there are line like:

GetSystemTime ( & Time);

FillCnlLlFlag (Packet, LastSendSeq, LINK_OPERATION_CLEANUP, 0 , FALSE );
TimeStamp += ((UINT64) Time. wYear * 12 * 31 * 24 * 60 * 60 );
TimeStamp += ((UINT64) Time. wMonth * 31 * 24 * 60 * 60 );
TimeStamp += ((UINT64) Time. wDay * 24 * 60 * 60 );
TimeStamp += ((UINT64) Time. wHour * 60 * 60 );
TimeStamp += ((UINT64) Time. wMinute * 60 );
TimeStamp += Time. wSecond ;
TimeStamp <<= 32 ;
TimeStamp += Time. wMilliseconds ;

The value of `2024*12*31*24*60*60` is 65052979200, which is out of the range of 32bit.


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