From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Hutchings <ben@decadent.org.uk>
Subject: Re: Bug#624131: linux-image-2.6.39-rc4-686-pae: Can somewhat
 reliably produce kernel panic in btrfs code
Date: Mon, 25 Apr 2011 21:15:26 +0100
Message-ID: <1303762526.3032.296.camel@localhost>
References: <BANLkTikiVMbH0BU4xTZirNDUu=GhG0ooyg@mail.gmail.com>
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Cc: 624131@bugs.debian.org, linux-btrfs@vger.kernel.org
To: Maik Zumstrull <maik@zumstrull.net>
Return-path: <linux-btrfs-owner@vger.kernel.org>
In-Reply-To: <BANLkTikiVMbH0BU4xTZirNDUu=GhG0ooyg@mail.gmail.com>
List-ID: <linux-btrfs.vger.kernel.org>


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On Mon, 2011-04-25 at 22:05 +0200, Maik Zumstrull wrote:
> Package: linux-image-2.6.39-rc4-686-pae
> Version: 2.6.39~rc4-1~experimental.1
> Severity: normal
> Tags: experimental
>=20
> By simply stressing the system with some I/O, I can make it crash within
> seconds. I'm not setting a higher severity because the bug is in an
> experimental file system in an experimental kernel.

I assume this doesn't happen in 2.6.38?

> Here's the important bits (by my guess) I have on screen from the kernel =
panic:
>=20
> Bug at fs/btrfs/free-space-cache.c:1246
> Bug type: invalid opcode: 0000
> Kernel not tainted, running on an ASUSTek 1005HAG
> EIP is at btrfs_add_free_space+0x285/0x39a [btrfs]

You will probably need to provide a more complete copy of the panic
message.  Let's see what the btrfs developers say.

Ben.

--=20
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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