merged
On Mon, Mar 14, 2011 at 12:48 PM, Jeff Layton <jlayton@xxxxxxxxxx> wrote:
> Currently, we skip doing the is_path_accessible check in cifs_mount if
> there is no prefixpath. I have a report of at least one server however
> that allows a TREE_CONNECT to a share that has a DFS referral at its
> root. The reporter in this case was using a UNC that had no prefixpath,
> so the is_path_accessible check was not triggered and the box later hit
> a BUG() because we were chasing a DFS referral on the root dentry for
> the mount.
>
> This patch fixes this by removing the check for a zero-length
> prefixpath. That should make the is_path_accessible check be done in
> this situation and should allow the client to chase the DFS referral at
> mount time instead.
>
> Cc: stable@xxxxxxxxxx
> Reported-and-Tested-by: Yogesh Sharma <ysharma@xxxxxxxxx>
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> fs/cifs/connect.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 63ec77c..b82e8af 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -2865,7 +2865,7 @@ try_mount_again:
>
> remote_path_check:
> /* check if a whole path (including prepath) is not remote */
> - if (!rc && cifs_sb->prepathlen && tcon) {
> + if (!rc && tcon) {
> /* build_path_to_root works only when we have a valid tcon */
> full_path = cifs_build_path_to_root(cifs_sb, tcon);
> if (full_path == NULL) {
> --
> 1.7.4
>
>
--
Thanks,
Steve
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