linux-kernel - [PATCH 5.10 019/126] NFSD: fix error handling in NFSv4.0 callbacks

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Message-Id: <20210405085031.667009441@linuxfoundation.org>
Date:   Mon,  5 Apr 2021 10:53:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Bruce Fields <bfields@...hat.com>,
        Olga Kornievskaia <kolga@...app.com>,
        Chuck Lever <chuck.lever@...cle.com>,
        Benjamin Coddington <bcodding@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 019/126] NFSD: fix error handling in NFSv4.0 callbacks

From: Olga Kornievskaia <kolga@...app.com>

[ Upstream commit b4250dd868d1b42c0a65de11ef3afbee67ba5d2f ]

When the server tries to do a callback and a client fails it due to
authentication problems, we need the server to set callback down
flag in RENEW so that client can recover.

Suggested-by: Bruce Fields <bfields@...hat.com>
Signed-off-by: Olga Kornievskaia <kolga@...app.com>
Signed-off-by: Chuck Lever <chuck.lever@...cle.com>
Tested-by: Benjamin Coddington <bcodding@...hat.com>
Link: https://lore.kernel.org/linux-nfs/FB84E90A-1A03-48B3-8BF7-D9D10AC2C9FE@oracle.com/T/#t
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/nfsd/nfs4callback.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 052be5bf9ef5..7325592b456e 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1189,6 +1189,7 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
 		switch (task->tk_status) {
 		case -EIO:
 		case -ETIMEDOUT:
+		case -EACCES:
 			nfsd4_mark_cb_down(clp, task->tk_status);
 		}
 		break;
-- 
2.30.1