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From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Tue, 18 Jul 2023 08:38:37 -0400
Subject: [PATCH] nfsd: Remove incorrect check in nfsd4_validate_stateid
Git-commit: f75546f58a70da5cfdcec5a45ffc377885ccbee8
Patch-mainline: v6.5
References: git-fixes

If the client is calling TEST_STATEID, then it is because some event
occurred that requires it to check all the stateids for validity and
call FREE_STATEID on the ones that have been revoked. In this case,
either the stateid exists in the list of stateids associated with that
nfs4_client, in which case it should be tested, or it does not. There
are no additional conditions to be considered.

Reported-by: "Frank Ch. Eigler" <fche@redhat.com>
Fixes: 7df302f75ee2 ("NFSD: TEST_STATEID should not return NFS4ERR_STALE_STATEID")
Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Acked-by: NeilBrown <neilb@suse.com>

---
 fs/nfsd/nfs4state.c |    9 ---------
 1 file changed, 9 deletions(-)

--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4982,15 +4982,6 @@ static __be32 nfsd4_validate_stateid(str
 	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
 		CLOSE_STATEID(stateid))
 		return status;
-	/* Client debugging aid. */
-	if (!same_clid(&stateid->si_opaque.so_clid, &cl->cl_clientid)) {
-		char addr_str[INET6_ADDRSTRLEN];
-		rpc_ntop((struct sockaddr *)&cl->cl_addr, addr_str,
-				 sizeof(addr_str));
-		pr_warn_ratelimited("NFSD: client %s testing state ID "
-					"with incorrect client ID\n", addr_str);
-		return status;
-	}
 	spin_lock(&cl->cl_lock);
 	s = find_stateid_locked(cl, stateid);
 	if (!s)