Hi, Baruh. I tried another kernel from here:
wget http://ports.ubuntu.com/ubuntu-ports/dists/lucid/main/installer-armel/current/images/versatile/netboot/vmlinuz Linux fedora-arm 2.6.32-21-versatile #32-Ubuntu and with it I get my mmap_min_addr back. Thank you for your help. Valery ----- Original Message ----- > From: Baruch Siach <bar...@tkos.co.il> > To: Valery Reznic <valery_rez...@yahoo.com> > Cc: shimi <linux...@shimi.net>; linux-il <linux-il@cs.huji.ac.il> > Sent: Tuesday, January 15, 2013 1:36 PM > Subject: Re: /proc/sys/vm/mmap_min_addr missing > > Hi Valery, > > On Tue, Jan 15, 2013 at 12:42:33AM -0800, Valery Reznic wrote: >> ----- Original Message ----- >> > From: Baruch Siach <bar...@tkos.co.il> >> > To: Valery Reznic <valery_rez...@yahoo.com> >> > Cc: shimi <linux...@shimi.net>; linux-il > <linux-il@cs.huji.ac.il> >> > Sent: Tuesday, January 15, 2013 9:33 AM >> > Subject: Re: /proc/sys/vm/mmap_min_addr missing >> > >> > On Mon, Jan 14, 2013 at 11:24:27PM -0800, Valery Reznic wrote: >> >> > From: shimi <linux...@shimi.net> >> >> >To: Valery Reznic <valery_rez...@yahoo.com> >> >> >Cc: linux-il <linux-il@cs.huji.ac.il> >> >> >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 >> > <valery_rez...@yahoo.com> 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? >> My host with Fedora 12 x86-64 >> Linux Fedora8 2.6.32.26-175.fc12.x86_64 #1 SMP Wed Dec 1 21:39:34 UTC 2010 > x86_64 x86_64 x86_64 GNU/Linux >> >> has mmap_min_addr > > No problem here. > >> Fedora 3 x86-64 with kernel 2.6.9-1.667 also has not mmap_min_addr > > No problem here either (kernel too old). > >> Fedora 12 ARM with kernel >> >> uname -a >> Linux fedora-arm 2.6.24-rc7 #1 Wed Jan 16 02:28:08 CET 2008 armv5tel > armv5tel armv5tel GNU/Linux >> >> has not > > I now see that the original commit (ed032189) made mmap_min_addr depend on > CONFIG_SECURITY. Do you have this enabled in your kernel configuration? > >> Debian ARM OABI I think, has kernel 2.4 (can't check it now) > > baruch > > -- > http://baruch.siach.name/blog/ ~. .~ Tk Open Systems > =}------------------------------------------------ooO--U--Ooo------------{= > - bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il - > _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
