linux-kernel - Re: Kernel 3.1.0-rc4 oops when connecting iPod

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Date:	Thu, 8 Sep 2011 04:13:01 +0100 (BST)
From:	Hin-Tak Leung <htl10@...rs.sourceforge.net>
To:	Pavel Ivanov <paivanof@...il.com>,
	Seth Forshee <seth.forshee@...onical.com>
Cc:	linux-fsdevel@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...era.com>
Subject: Re: Kernel 3.1.0-rc4 oops when connecting iPod

--- On Wed, 7/9/11, Seth Forshee <seth.forshee@...onical.com> wrote:

> Yes, that was definitely just an oversight. Has anyone
> provided a patch
> yet? If not I've pasted a patch below. Seems like a fix
> should be
> applied ASAP.
> 
> 
> From d27825b880028e9a45ba640d86c9e8101db0606b Mon Sep 17
> 00:00:00 2001
> From: Seth Forshee <seth.forshee@...onical.com>
> Date: Wed, 7 Sep 2011 10:38:35 -0700
> Subject: [PATCH] hfsplus: Fix kfree of wrong pointers in
> hfsplus_fill_super() error path
> 
> Commit 6596528 (hfsplus: ensure bio requests are not
> smaller than
> the hardware sectors) changed the pointers used for volume
> header
> allocations but failed to change the pointer freed in the
> error
> path of hfsplus_fill_super(). This patch fixes the
> problem.
> 
> Reported-by: Pavel Ivanov <paivanof@...il.com>
> Signed-off-by: Seth Forshee <seth.forshee@...onical.com>
> Cc: <stable@...nel.org>

Acked-by: Hin-Tak Leung <htl10@...rs.sourceforge.net>

Please go ahead and submit the patch.

> ---
>  fs/hfsplus/super.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
> index c106ca2..cadbb8c 100644
> --- a/fs/hfsplus/super.c
> +++ b/fs/hfsplus/super.c
> @@ -525,8 +525,8 @@ out_close_cat_tree:
>  out_close_ext_tree:
>      hfs_btree_close(sbi->ext_tree);
>  out_free_vhdr:
> -    kfree(sbi->s_vhdr);
> -    kfree(sbi->s_backup_vhdr);
> +    kfree(sbi->s_vhdr_buf);
> +    kfree(sbi->s_backup_vhdr_buf);
>  out_unload_nls:
>      unload_nls(sbi->nls);
>      unload_nls(nls);
> -- 
> 1.7.4.1
> 
> --
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