problem with gate_vma flags?

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When viewing /proc/<pid>/maps on i386, the final page shows up as :

ffffe000-fffff000 ---p 00000000 00:00 0

If I'm reading the code correctly, this is the address range controlled by gate_vma.

The permissions are marked as nothing because when this vma is created "vm_flags" is set to 0. However, shouldn't it be at least VM_READ and possibly also VM_EXEC?

Chris

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