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Date:	Fri, 12 Mar 2010 23:14:13 +0900
From:	Tetsuo Handa <>
Subject: Re: [PATCH] sunrpc: fix error path - actually return ERR_PTR() on error

Jani Nikula wrote:
> Signed-off-by: Jani Nikula <>
> ---
> NOTE: I'm afraid I'm unable to test this; please consider this more a
> bug report than a complete patch.
> ---
Indeed, it has to be "return ERR_PTR(-EINVAL);".
Otherwise, it will trigger NULL pointer dereference some lines later.

    bc_sock = container_of(args->bc_xprt, struct svc_sock, sk_xprt);
    bc_sock->sk_bc_xprt = xprt;

This bug was introduced by f300baba5a1536070d6d77bf0c8c4ca999bb4f0f
"nfsd41: sunrpc: add new xprt class for nfsv4.1 backchannel" and
exists in 2.6.32 and later.
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