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

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Message-Id: <20240826-nfsd-cb-v1-1-82d3a4e5913b@kernel.org>
Date: Mon, 26 Aug 2024 08:50:11 -0400
From: Jeff Layton <jlayton@...nel.org>
To: 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>
Cc: linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 1/3] nfsd: add more info to WARN_ON_ONCE on failed
 callbacks

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

-- 
2.46.0