From: Arnd Bergmann <arnd@arndb.de>
To: Saeed Mahameed <saeedm@mellanox.com>,
Leon Romanovsky <leon@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>, Tariq Toukan <tariqt@mellanox.com>,
Eran Ben Elisha <eranbe@mellanox.com>,
Boris Pismenny <borisp@mellanox.com>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com
Subject: [PATCH] [net-next] net/mlx5e: avoid uninitialized variable use
Date: Wed, 10 Jul 2019 15:06:25 +0200 [thread overview]
Message-ID: <20190710130638.1846846-1-arnd@arndb.de> (raw)
clang points to a variable being used in an unexpected
code path:
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c:251:2: warning: variable 'rec_seq_sz' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
default:
^~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c:255:46: note: uninitialized use occurs here
skip_static_post = !memcmp(rec_seq, &rn_be, rec_seq_sz);
^~~~~~~~~~
From looking at the function logic, it seems that there is no
sensible way to continue here, so just return early and hope
for the best.
Fixes: d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
index 3f5f4317a22b..5c08891806f0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
@@ -250,6 +250,7 @@ tx_post_resync_params(struct mlx5e_txqsq *sq,
}
default:
WARN_ON(1);
+ return;
}
skip_static_post = !memcmp(rec_seq, &rn_be, rec_seq_sz);
--
2.20.0
next reply other threads:[~2019-07-10 13:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-10 13:06 Arnd Bergmann [this message]
2019-07-10 14:22 ` [PATCH] [net-next] net/mlx5e: avoid uninitialized variable use Tariq Toukan
2019-07-10 17:14 ` Nathan Chancellor
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