[PATCH 2/2][BZ #12416] Use stack boundaries from /proc/PID/maps to make stack executable

[Roland McGrath]

> I roughly read [BZ #12416] and I found comment#3 says it's a kernel
> bug. But I'm not exactly sure what he said. Can anyone please explain
> which fault do kernel has? If you guys don't want kernel change at
> all, please ignore me.

comment#1 claimed that it was a kernel bug that changing permissions causes
a vma split.  But that was a misunderstanding of the kernel.  I don't think
any aspect of this issue warrants considering any kernel changes.


Thanks,
Roland