Hi Valery,
On Mon, Jan 14, 2013 at 11:24:27PM -0800, Valery Reznic wrote:
> > From: shimi <[email protected]>
> >To: Valery Reznic <[email protected]>
> >Cc: linux-il <[email protected]>
> >Sent: Tuesday, January 15, 2013 6:21 AM
> >Subject: Re: /proc/sys/vm/mmap_min_addr missing
> >
> >
> >On Mon, Jan 14, 2013 at 11:40 PM, Valery Reznic <[email protected]>
> >wrote:
> >
> >Recently I stumbled upon some mystery that I can't understand.
> >>My Google search bring no results.
> >>
> >>I have 3 VM with different Linuxes that run under QEMU and now I noticed
> >>that
> >>all of them don't have /proc/sys/vm/mmap_min_addr files (/proc is mounted)
> >
> >Are you emulating ARM on the guests by any chance?
> I am running Fedora 12 ARM, Fedora Core 3 x86-64, and debian ARM
> I don't remember debian version, but it's ARM OABI
mmap_min_addr first appeared in kernel version 2.6.23, commit ed032189
(security: Protection for exploiting null dereference using mmap). What kernel
versions are you running in your virtualized machines?
baruch
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