Re: [uml-devel] [PATCH 1/1] hostfs: fix UML crash

[Andrew Morton <akpm@linux-foundation.org>]

On Mon, 18 Oct 2010 18:36:54 +0200 Richard Weinberger <richard@nod.at> wrote:

> 365b1818 resized f_spare within struct statfs.
> hostfs accesses f_spare directly and needs an update.
> 
> Signed-off-by: Richard Weinberger <richard@nod.at>
> Reported-by: Toralf F__rster <toralf.foerster@gmx.de>
> Tested-by: Toralf F__rster <toralf.foerster@gmx.de>
> ---
>  fs/hostfs/hostfs_user.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
> index 6777aa0..ce2f168 100644
> --- a/fs/hostfs/hostfs_user.c
> +++ b/fs/hostfs/hostfs_user.c
> @@ -388,6 +388,6 @@ int do_statfs(char *root, long *bsize_out, long long *blocks_out,
>  	spare_out[1] = buf.f_spare[1];
>  	spare_out[2] = buf.f_spare[2];
>  	spare_out[3] = buf.f_spare[3];
> -	spare_out[4] = buf.f_spare[4];
> +
>  	return 0;
>  }

Thanks.

Is there any reason for hostfs to be playing with the f_spare field at all?

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