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Re: [XFS on bad superblock] BUG: unable to handle kernel NULL pointer de

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [XFS on bad superblock] BUG: unable to handle kernel NULL pointer dereference at 00000003
From: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Date: Thu, 10 Oct 2013 11:26:37 +0800
Cc: Dave Chinner <dchinner@xxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, Ben Myers <bpm@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131010031515.GT4446@dastard>
References: <20131009073910.GA387@localhost> <20131010005900.GE2025@xxxxxxxxxxxxxxxxx> <20131010011640.GA5726@localhost> <20131010014117.GA6017@localhost> <20131010031515.GT4446@dastard>
User-agent: Mutt/1.5.21 (2010-09-15)
Dave,

> I note that you have CONFIG_SLUB=y, which means that the cache slabs
> are shared with objects of other types. That means that the memory
> corruption problem is likely to be caused by one of the other
> filesystems that is probing the block device(s), not XFS.

Good to know that, it would easy to test then: just turn off every
other filesystems. I'll try it right away.

Thanks,
Fengguang

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