Re: [Xen-devel] [PATCH] libxc hardening

[Chris Wright <chrisw@xxxxxxxx>]

* Keir Fraser (Keir.Fraser@xxxxxxxxxxxx) wrote:
> mmap() will never return NULL address (according to the man page). I 
> guess you might be able to force it with MAP_FIXED, but no sane mmap 
> implementation would ever automatically choose NULL as a reasonable 
> valid return address. :-)

Heh, sadly we just recently fixed a bug in the kernel that actually
allowed returning NULL w/out MAP_FIXED.  But aside from bugs... ;-)

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