linux-kernel - Re: ext3-related crash in 2.6.20-rc1

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Message-Id: <20061223171228.120ac8a6.akpm@osdl.org>
Date:	Sat, 23 Dec 2006 17:12:28 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Pavel Machek <pavel@....cz>
Cc:	kernel list <linux-kernel@...r.kernel.org>, marcel@...tmann.org,
	maxk@...lcomm.com, bluez-devel@...ts.sourceforge.net
Subject: Re: ext3-related crash in 2.6.20-rc1

On Sun, 24 Dec 2006 00:43:05 +0100
Pavel Machek <pavel@....cz> wrote:

> Hi!
> 
> I got this nasty oops while playing with debugger. Not sure if that is
> related; it also might be something with bluetooth; I already know it
> corrupts memory during suspend, perhaps it corrupts memory in some
> error path?
> 
>  
> 
> 								Pavel
> 
> 
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> l2cap_recv_acldata: Unexpected continuation frame (len 0)
> PM: Removing info for bluetooth:acl00803715A329
> e1000: eth0: e1000_watchdog: NIC Link is Down
> e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
> e1000: eth0: e1000_watchdog: 10/100 speed: disabling TSO
> e1000: eth0: e1000_watchdog: NIC Link is Down
> e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex
> e1000: eth0: e1000_watchdog: 10/100 speed: disabling TSO
> ------------[ cut here ]------------
> kernel BUG at fs/buffer.c:1235!

get thee to fs/buffer.c:1235.  You'll see that someone somewhere forgot to
reenable local interrupts.

Were you using gdb at the time?  A fix for something like that was merged
into mainline yesterday.

The slab errors which you're reporting in later emails will almost surely
be unrelated to this.

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