linux-kernel - Re: [PATCH 1/3] nfsd: add more info to WARN_ON

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Message-ID: <CAN-5tyGWmAZ2ovmS4SqiEoZhokxOG+ERvOVFB6ziTqE-ahLFUg@mail.gmail.com>
Date: Thu, 19 Dec 2024 16:23:42 -0500
From: Olga Kornievskaia <aglo@...ch.edu>
To: Jeff Layton <jlayton@...nel.org>
Cc: Chuck Lever <chuck.lever@...cle.com>, Neil Brown <neilb@...e.de>, 
	Olga Kornievskaia <kolga@...app.com>, Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>, 
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] nfsd: add more info to WARN_ON_ONCE on failed callbacks

On Mon, Aug 26, 2024 at 8:54 AM Jeff Layton <jlayton@...nel.org> wrote:
>
> Currently, you get the warning and stack trace, but nothing is printed
> about the relevant error codes. Add that in.
>
> Signed-off-by: Jeff Layton <jlayton@...nel.org>
> ---
>  fs/nfsd/nfs4callback.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
> index d756f443fc44..dee9477cc5b5 100644
> --- a/fs/nfsd/nfs4callback.c
> +++ b/fs/nfsd/nfs4callback.c
> @@ -1333,7 +1333,8 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
>                 return;
>
>         if (cb->cb_status) {
> -               WARN_ON_ONCE(task->tk_status);
> +               WARN_ONCE(task->tk_status, "cb_status=%d tk_status=%d",
> +                         cb->cb_status, task->tk_status);

Can we add cb->cb_ops->opcode to that as well?

>                 task->tk_status = cb->cb_status;
>         }
>
>
> --
> 2.46.0
>
>