Date: Tue, 5 Sep 2017 22:31:46 +0100 From: Ard Biesheuvel <ard.biesheuvel@...aro.org> To: Tony Lindgren <tony@...mide.com> Cc: "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, Arnd Bergmann <arnd@...db.de>, Nicolas Pitre <nico@...aro.org>, Russell King <linux@...linux.org.uk>, Kees Cook <keescook@...omium.org>, Thomas Garnier <thgarnie@...gle.com>, Marc Zyngier <marc.zyngier@....com>, Mark Rutland <mark.rutland@....com>, Matt Fleming <matt@...eblueprint.co.uk>, Dave Martin <dave.martin@....com> Subject: Re: [PATCH v2 00/29] implement KASLR for ARM On 5 September 2017 at 22:27, Tony Lindgren <tony@...mide.com> wrote: > * Ard Biesheuvel <ard.biesheuvel@...aro.org> [170905 12:43]: >> Right. Well, I will try to reproduce with the BB white I have. > > Yeah that should be reproducable, I got it to happen on BBB here > after about 5 boots. > >> Are you booting with an initrd? > > Not on this one, on beagleboard xm I do. > Interesting. >> >> > Then loading modules with CONFIG_RANDOMIZE_BASE=y seems to fail with: >> >> > >> >> > $ sudo modprobe rtc-twl >> >> > rtc_twl: disagrees about version of symbol module_layout >> >> > modprobe: ERROR: could not insert 'rtc_twl': Exec format error >> >> > >> >> >> >> Is this with CONFIG_MODVERSIONS enabled? >> > >> > Yes, but disabling that did not seem to make any difference >> > based on just one test. >> > >> >> Yeah, well, it appears I missed a couple of details :-) >> >> This should fix the module loading issues: > > Yeah now modprobe works :) That's after manually applying > it as the tabs got munched in your patch somewhere, see below. > Yeah, Gmail tends to do that now and again. Apologies. Thanks for confirming that the module loading works for you, I will fold this into my v3.
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