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Re: alloc magic is broken at... error

From: Andrey Borzenkov
Subject: Re: alloc magic is broken at... error
Date: Mon, 20 Jan 2014 19:27:07 +0400

В Mon, 20 Jan 2014 09:59:40 -0500
SevenBits <address@hidden> пишет:

> On Jan 19, 2014, at 9:23 PM, Andrey Borzenkov <address@hidden> wrote:
> > В Sun, 19 Jan 2014 19:45:23 -0500
> > SevenBits <address@hidden> пишет:
> > 
> >> Not sure whether to post this in this bug-grub list or here, so feel free 
> >> to correct me if perhaps this is in the wrong spot. I’m not sure if the 
> >> issue I’m having is due to a fault in setup or a bug within GRUB.
> >> 
> >> I’m the developer of a tool called Mac Linux USB Loader, and some of my 
> >> users are reporting errors with my compiled copy of GRUB. Specifically, 
> >> after loading the kernel, GRUB spits out the following error message:
> >> 
> >> alloc magic is broken at 0x81493ca0: 207d007d68746170
> >> Aborted. Press any key to exit.
> >> 
> >> The hexadecimal values vary slightly, but generally speaking this is what 
> >> the error looks like. The kernel loading operation with GRUB’s linux 
> >> command is followed by the initrd command to load the RAM disc, and that 
> >> operation never occurs, so I know that the operation never completes.
> >> 
> >> This error never seems to occur with Ubuntu-based distributions. It also 
> >> seems to occur if the kernel can’t be found - but in that case, shouldn’t 
> >> the linux command fail with an error instead of something like this?
> >> 
> >> I can’t post my GRUB config at the moment, as I’m not on the machine where 
> >> it is stored, but any advice that you can give me without it would be 
> >> appreciated, such as under what conditions this error occurs.
> >> 
> >> Thanks,
> >> 
> >> — SevenBits
> > 
> > Well, the first thing to try would be upstream HEAD to verify whether
> > problem is still present there.
> Sorry, just realized my previous reply didn’t get posted.
> The GRUB build I’m using is compiled straight from the current git 
> repository. It might be a week or two old, but unless something really 
> changed in the last two to three weeks I don’t think it’ll differ.

In this case you need to post to gurb-devel. Is there any way to get
output to serial console?

> I can try an older release of GRUB, like the latest stable and see if that 
> does anything though.

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