linux-kernel - [PATCH][net-next] svcrdma: fix an incorrect check on -E2BIG and -EINVAL

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Message-Id: <20170713175115.9044-1-colin.king@canonical.com>
Date:   Thu, 13 Jul 2017 18:51:15 +0100
From:   Colin King <colin.king@...onical.com>
To:     Trond Myklebust <trond.myklebust@...marydata.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        "J . Bruce Fields" <bfields@...ldses.org>,
        Jeff Layton <jlayton@...chiereds.net>,
        "David S . Miller" <davem@...emloft.net>,
        Chuck Lever <chuck.lever@...cle.com>,
        Sagi Grimberg <sagi@...mberg.me>, linux-nfs@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][net-next] svcrdma: fix an incorrect check on -E2BIG and -EINVAL

From: Colin Ian King <colin.king@...onical.com>

The current check will always be true and will always jump to
err1, this looks dubious to me. I believe && should be used
instead of ||.

Detected by CoverityScan, CID#1450120 ("Logically Dead Code")

Fixes: 107c1d0a991a ("svcrdma: Avoid Send Queue overflow")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 net/sunrpc/xprtrdma/svc_rdma_sendto.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index 19fd01e4b690..7c3a211e0e9a 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -684,7 +684,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
 	return 0;
 
  err2:
-	if (ret != -E2BIG || ret != -EINVAL)
+	if (ret != -E2BIG && ret != -EINVAL)
 		goto err1;
 
 	ret = svc_rdma_post_recv(rdma, GFP_KERNEL);
-- 
2.11.0