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From: Hernan Vargas <hernan.vargas@intel.com>
To: dev@dpdk.org, maxime.coquelin@redhat.com, gakhil@marvell.com,
	trix@redhat.com
Cc: nicolas.chautru@intel.com, qi.z.zhang@intel.com,
	john.mcnamara@intel.com, Hernan Vargas <hernan.vargas@intel.com>
Subject: [PATCH v1 1/1] baseband/acc: fix check after deref and dead code
Date: Fri, 20 Jan 2023 12:55:53 -0800	[thread overview]
Message-ID: <20230120205553.62419-2-hernan.vargas@intel.com> (raw)
In-Reply-To: <20230120205553.62419-1-hernan.vargas@intel.com>

Fix potential issue of dereferencing a pointer before null check.
Remove null check for value that could never be null.

Coverity issue: 381646, 381631
Fixes: 989dec301a9 ("baseband/acc100: add ring companion address")

Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
---
 drivers/baseband/acc/rte_acc100_pmd.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/baseband/acc/rte_acc100_pmd.c b/drivers/baseband/acc/rte_acc100_pmd.c
index 0992cb5d1e..a600511f4b 100644
--- a/drivers/baseband/acc/rte_acc100_pmd.c
+++ b/drivers/baseband/acc/rte_acc100_pmd.c
@@ -4106,12 +4106,9 @@ acc100_dequeue_ldpc_enc(struct rte_bbdev_queue_data *q_data,
 	int ret, cbm;
 	struct rte_bbdev_enc_op *op;
 
-	if (q == NULL)
-		return 0;
-#ifdef RTE_LIBRTE_BBDEV_DEBUG
-	if (unlikely(ops == 0))
+	if (avail == 0)
 		return 0;
-#endif
+
 	op = acc_op_tail(q, 0);
 	if (unlikely(ops == NULL || op == NULL))
 		return 0;
-- 
2.37.1


  reply	other threads:[~2023-01-20 20:56 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-20 20:55 [PATCH v1 0/1] DPDK Coverity issue 381631, 381646 Hernan Vargas
2023-01-20 20:55 ` Hernan Vargas [this message]
2023-02-06 15:22   ` [PATCH v1 1/1] baseband/acc: fix check after deref and dead code Maxime Coquelin
  -- strict thread matches above, loose matches on Subject: below --
2022-11-04  3:52 [PATCH v1 0/1] baseband/acc: coverity fix RC2 Hernan Vargas
2022-11-04  3:52 ` [PATCH v1 1/1] baseband/acc: fix check after deref and dead code Hernan Vargas
2022-11-04  8:51   ` Maxime Coquelin
2022-11-04 17:39     ` Chautru, Nicolas
2022-11-08 18:00       ` Chautru, Nicolas
2022-11-10  9:48   ` David Marchand
2022-11-10 21:15     ` Chautru, Nicolas
2022-11-15 15:17       ` Chautru, Nicolas
2022-11-15 15:59       ` David Marchand
2022-11-15 18:04         ` Chautru, Nicolas
2022-11-15 22:32           ` Chautru, Nicolas

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