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Date:	Thu, 19 Jun 2014 09:43:24 +0200
From:	Geert Uytterhoeven <>
To:	Laura Abbott <>
Cc:	Grant Likely <>,
	"" <>,
	Simon Horman <>,
	"" <>,
	Rob Herring <>
Subject: Re: [PATCH] of: Check for phys_addr_t overflows in early_init_dt_add_memory_arch

Fixed Rob's and devicetree's addresses

On Thu, Jun 19, 2014 at 9:31 AM, Geert Uytterhoeven
<> wrote:
> Hi Laura,
> On Thu, Jun 19, 2014 at 7:04 AM, Laura Abbott <> wrote:
>> The common early_init_dt_add_memory_arch takes the base and size
>> of a memory region as u64 types. The function never checks if
>> the base and size can actually fit in a phys_addr_t which may
>> be smaller than 64-bits. This may result in incorrect memory
>> being passed to memblock_add if the memory falls outside the
>> range of phys_addr_t. Add range checks for the base and size if
>> phys_addr_t is smaller than u64.
>> Reported-by: Geert Uytterhoeven <>
>> Signed-off-by: Laura Abbott <>
> Tested-by: Geert Uytterhoeven <>
>> ---
>> Geert, can you drop my other patch and give this a test to see if it fixes
>> your bootup problem?
> Thanks, works fine!



Geert Uytterhoeven -- There's lots of Linux beyond ia32 --

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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