linux-kernel - Re: 4.5.0-rc6: kernel BUG at ../mm/memory.c:1879

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Message-ID: <CAJs94EY-oRyM_AgA=hy=k=jJEgZUxb4yU8jS_tjgk+N0ZWAbtw@mail.gmail.com>
Date:	Mon, 7 Mar 2016 16:10:53 +0300
From:	"Matwey V. Kornilov" <matwey.kornilov@...il.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Vlastimil Babka <vbabka@...e.cz>, linux-mm@...ck.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 4.5.0-rc6: kernel BUG at ../mm/memory.c:1879

2016-03-07 16:03 GMT+03:00 Russell King - ARM Linux <linux@....linux.org.uk>:
> On Mon, Mar 07, 2016 at 01:51:40PM +0100, Vlastimil Babka wrote:
>> [+CC ARM, module maintainers/lists]
>>
>> On 03/07/2016 12:14 PM, Matwey V. Kornilov wrote:
>> >
>> >Hello,
>> >
>> >I see the following when try to boot 4.5.0-rc6 on ARM TI AM33xx based board.
>> >
>> >     [   13.907631] ------------[ cut here ]------------
>> >     [   13.912323] kernel BUG at ../mm/memory.c:1879!
>>
>> That's:
>> BUG_ON(addr >= end);
>>
>> where:
>> end = addr + size;
>>
>> All these variables are unsigned long, so they overflown?
>>
>> I don't know ARM much, and there's no code for decodecode, but if I get the
>> calling convention correctly, and the registers didn't change, both addr is
>> r1 and size is r2, i.e. both bf006000. Weird.
>
> A fix has been recently merged for this.  Look out for
> "ARM: 8544/1: set_memory_xx fixes"
>

Many thanks, I'll try again with -rc7.

> --
> RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
> FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
> according to speedtest.net.



-- 
With best regards,
Matwey V. Kornilov
http://blog.matwey.name
xmpp://0x2207@...ber.ru