Date: Wed, 6 Sep 2017 18:30:55 +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 6 September 2017 at 18:12, Tony Lindgren <tony@...mide.com> wrote: > * Ard Biesheuvel <ard.biesheuvel@...aro.org> [170906 09:36]: >> Turns out I am calculating the top of DRAM incorrectly for boards >> where less memory is present than the size of the lowmem region. >> >> Could you try this please? (Apologies for the whitespace) > > I think for 10 or so units per year you can actually buy > a non-mangling outgoing SMTP service if nothing else helps.. > Yeah, you're right, apologies. I use git-send-email mostly, but not for inline snippets like this. And it is not actually the SMTP service but the web client that mangles the whitespace > Anyways, you patch manually applied fixed most of the random > boot hangs for me, but I did see a new one after 11 boot > attempts, see below. > > Regards, > > Tony > > 8< -------------- > Kernel image @ 0x81000000 [ 0x000000 - 0x426300 ] > ## Flattened Device Tree blob at 84000000 > Booting using the fdt blob at 0x84000000 > Loading Device Tree to 86feb000, end 86fff2d5 ... OK > > Starting kernel ... > > regions.image_size:00e00000 > regions.pa_start:80000000 > regions.pa_end:87200000 > regions.zimage_start:81000000 > regions.zimage_size:00437320 > regions.dtb_start:86feb000 > regions.dtb_size:00012000 > regions.initrd_start:00000000 > regions.initrd_size:00000000 > num:00000028 > num:00000025 > *kaslr_offset:05e00000 > Uncompressing Linux... done, booting the kernel. > Warning: Neither atags nor dtb found OK, so in this case, 80000000 + 00e00000 + 05e00000 == 86c00000, which is still below the DTB, but apparently, it has corrupted it anyway. I will try to figure out what's going on here. Thanks again for taking the time, Ard.
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