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Date: Thu, 7 Feb 2002 09:20:12 +0300
From: Oleg Drokin <green@namesys.com>
To: Luigi Genoni <kernel@Expansa.sns.it>
Cc: reiserfs-dev@namesys.com, linux-kernel@vger.kernel.org
Subject: Re: [reiserfs-dev] oops with reiserfs and kernel 2.5.4-pre1 on sparc64
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Hello!

On Wed, Feb 06, 2002 at 06:53:47PM +0100, Luigi Genoni wrote:

> I was trying 2.5.4-pre1 on sparc64 sun4u ultra2,
> with 1GB memory and scsi controller ess.
> This system has just one CPU.
> >>TPC; 0046cf7c <grow_buffers+5c/e0>   <=====
> >>O7;  0046cf38 <grow_buffers+18/e0>
> >>I7;  0046b260 <__getblk+20/60>
> Trace; 0046b260 <__getblk+20/60>
> Trace; 0046b56c <__bread+c/a0>
> Trace; 004d1374 <journal_init+214/8e0>
This looks like VFS have exploded for whatever reson, I think
because one ot these checks failed:
linux/fs/buffer.c:
        if (size & (get_hardsect_size(to_kdev_t(bdev->bd_dev))-1))
                BUG();
        /* Size must be within 512 bytes and PAGE_SIZE */
        if (size < 512 || size > PAGE_SIZE)
                BUG();

Can any of sparc64 people comment on what kind of exception will one
get for __builtin_trap?
Second BUG() seems to be out of the question, though.
Do you have CONFIG_DEBUG_BUGVERBOSE enabled?

Bye,
    Oleg
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