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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: "Jon Medhurst (Tixy)" <tixy@linaro.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Kees Cook <keescook@chromium.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Arun Chandran <achandran@mvista.com>
Subject: Re: [PATCH 3.14 17/17] arm64: Make arch_randomize_brk avoid stack area
Date: Tue, 17 May 2016 13:31:54 -0700	[thread overview]
Message-ID: <20160517203154.GA15566@kroah.com> (raw)
In-Reply-To: <1463478563.2555.27.camel@linaro.org>

On Tue, May 17, 2016 at 10:49:23AM +0100, Jon Medhurst (Tixy) wrote:
> On Mon, 2016-05-16 at 18:14 -0700, Greg Kroah-Hartman wrote:
> > 3.14-stable review patch.  If anyone has any objections, please let me know.
> 
> As reported by Guenter Roeck, this patch doesn't compile on 3.14 because
> it deleted randomize_base which is still used by the macro
> ELF_ET_DYN_BASE. That use was removed in 3.18 by commit 92980405f353
> ("arm64: ASLR: Don't randomise text when randomise_va_space == 0")
> 
> Looking at that commit it seems to be what caused the bug $subject patch
> fixes because it stopped the arm64 implementation putting loaded
> binaries 2/3rds the way up a task's address range.
> 
> So it seems to me, either $subject patch should only be applied to 
> Linux versions 3.18 through 4.0 inclusive; or the fix in commit
> 92980405f353 also needs backporting to stable kernels before 3.18. (Or
> some more other solution.)

Thanks, I'll just drop this from 3.14-stable, as it doesn't seem to make
much sense for it to be backported there.

greg k-h

  reply	other threads:[~2016-05-17 20:31 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-17  1:14 [PATCH 3.14 00/17] 3.14.70-stable review Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 01/17] crypto: hash - Fix page length clamping in hash walk Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 02/17] get_rock_ridge_filename(): handle malformed NM entries Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 03/17] Input: max8997-haptic - fix NULL pointer dereference Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 04/17] asmlinkage, pnp: Make variables used from assembler code visible Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 05/17] drm/radeon: fix PLL sharing on DCE6.1 (v2) Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 06/17] drm/i915: Bail out of pipe config compute loop on LPT Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 07/17] ARM: OMAP3: Fix booting with thumb2 kernel Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 08/17] decnet: Do not build routes to devices without decnet private data Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 09/17] route: do not cache fib route info on local routes with oif Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 10/17] packet: fix heap info leak in PACKET_DIAG_MCLIST sock_diag interface Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 11/17] atl2: Disable unimplemented scatter/gather feature Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 14/17] VSOCK: do not disconnect socket when peer has shutdown SEND only Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 15/17] net: bridge: fix old ioctl unlocked net device walk Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 16/17] net: fix a kernel infoleak in x25 module Greg Kroah-Hartman
2016-05-17  1:14 ` [PATCH 3.14 17/17] arm64: Make arch_randomize_brk avoid stack area Greg Kroah-Hartman
2016-05-17  9:49   ` Jon Medhurst (Tixy)
2016-05-17 20:31     ` Greg Kroah-Hartman [this message]
2016-05-17  4:06 ` [PATCH 3.14 00/17] 3.14.70-stable review Guenter Roeck
2016-05-17 20:32   ` Greg Kroah-Hartman
2016-05-17 17:25 ` Guenter Roeck
2016-05-17 20:32   ` Greg Kroah-Hartman
2016-05-17 17:27 ` Shuah Khan
2016-05-17 20:32   ` Greg Kroah-Hartman
     [not found] ` <573c2d28.22c8c20a.9712f.4ddf@mx.google.com>
     [not found]   ` <m2k2iqzp1b.fsf@baylibre.com>
2016-05-19  3:53     ` Greg Kroah-Hartman

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