因此，看起来不太可能，我们似乎已经遇到了真正的CPU错误.

So, unlikely as it may seem, we appear to have hit an actual bona-fide CPU bug.

http://support.amd.com/us/Processor_TechDocs/41322_10h_Rev_Gd.pdf 具有erratum#721:

http://support.amd.com/us/Processor_TechDocs/41322_10h_Rev_Gd.pdf has erratum #721:

721处理器可能不正确地更新堆栈指针

说明

Under a highly specific and detailed set of internal timing conditions,
the processor may incorrectly update the stack pointer after a long series
of push and/or near-call instructions, or a long series of pop 
and/or near-return instructions. The processor must be in 64-bit mode for
this erratum to occur.

对系统的潜在影响

Potential Effect on System

The stack pointer value jumps by a value of approximately 1024, either in
the positive or negative direction.
This incorrect stack pointer causes unpredictable program or system behavior,
usually observed as a program exception or crash (for example, a #GP or #UD).