Actually maybe I can take a stab at this... xip1 was set equal to sp. They have the value of 00000033`c7dea700. That address is in a MEM_RESERVE region from 00000033`c7c00000 to 00000033`c7ded000. The next block above that (starting at 00000033`c7ded000) has PAGE_READWRITE|PAGE_GUARD bits, suggesting that the next block above _that_ was our stack. It sounds like we grew the stack in such a sudden increment that we didn't take a guard page fault?
Bug 1524419 Comment 13 Edit History
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Actually maybe I can take a stab at this... xip1 was set equal to sp. They have the value of 00000033c7dea700. That address is in a MEM_RESERVE region from 00000033c7c00000 to 00000033c7ded000. The next block above that (starting at 00000033c7ded000) has PAGE_READWRITE|PAGE_GUARD bits, suggesting that the next block above _that_ was our stack. It sounds like we grew the stack in such a sudden increment that we didn't take a guard page fault?