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From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>, stable@dpdk.org
Subject: [PATCH v2 18/19] examples/l3fwd: fix operator precedence bugs
Date: Mon, 18 Nov 2024 10:20:59 -0800	[thread overview]
Message-ID: <20241118182153.87042-19-stephen@networkplumber.org> (raw)
In-Reply-To: <20241118182153.87042-1-stephen@networkplumber.org>

The expression:

  if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&

gets evaluated as sockeid = (rte_lcore_to_socket_id(lcore) != 0)
which is not what was intended. This is goes all the way back
to first release.

Link: https://pvs-studio.com/en/blog/posts/cpp/1183/
Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 examples/l3fwd-power/main.c | 4 ++--
 examples/l3fwd/main.c       | 5 +++--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index ae8b55924e..7957ea6c95 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -1412,8 +1412,8 @@ check_lcore_params(void)
 							"mask\n", lcore);
 			return -1;
 		}
-		if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
-							(numa_on == 0)) {
+		socketid = rte_lcore_to_socket_id(lcore);
+		if (socketid != 0 && numa_on == 0) {
 			printf("warning: lcore %u is on socket %d with numa "
 						"off\n", lcore, socketid);
 		}
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index 6e2155e005..14076e07cc 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -307,8 +307,9 @@ check_lcore_params(void)
 			printf("error: lcore %u is not enabled in lcore mask\n", lcore);
 			return -1;
 		}
-		if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
-			(numa_on == 0)) {
+
+		socketid = rte_lcore_to_socket_id(lcore);
+		if (socketid != 0 && numa_on == 0) {
 			printf("warning: lcore %u is on socket %d with numa off\n",
 				lcore, socketid);
 		}
-- 
2.45.2


  parent reply	other threads:[~2024-11-18 18:24 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-15  6:05 [PATCH 00/16] small bug fixes from PVS studio bug list Stephen Hemminger
2024-11-15  6:05 ` [PATCH 01/16] common/cnxk: remove duplicate condition Stephen Hemminger
2024-11-15  6:16   ` [EXTERNAL] " Anoob Joseph
2024-11-15  6:05 ` [PATCH 02/16] net/cpfl: avoid calling log (printf) with null Stephen Hemminger
2024-11-15  6:05 ` [PATCH 03/16] raw/cnxk_gpio: fix file descriptor leak Stephen Hemminger
2024-11-15  6:05 ` [PATCH 04/16] net/ntnic: remove dead code Stephen Hemminger
2024-11-15  6:05 ` [PATCH 05/16] net/i40e: remove duplicate code Stephen Hemminger
2024-11-15 11:00   ` Bruce Richardson
2024-11-15  6:05 ` [PATCH 06/16] eal: fix out of bounds access in devargs Stephen Hemminger
2024-11-15  6:05 ` [PATCH 07/16] net/qede: fix missing debug string Stephen Hemminger
2024-11-15  6:05 ` [PATCH 08/16] examples/ptpclient: replace rte_memcpy with assignment Stephen Hemminger
2024-11-15  6:05 ` [PATCH 09/16] examples/ptpclient: fix self memcmp Stephen Hemminger
2024-11-15  6:05 ` [PATCH 10/16] net/octeon_ep: remove duplicate code Stephen Hemminger
2024-11-15  6:05 ` [PATCH 11/16] net/hinic: fix flow type bitmask overflow Stephen Hemminger
2024-11-15  6:05 ` [PATCH 12/16] crypto/dpaa2_sec: fix bitmask truncation Stephen Hemminger
2024-11-18  7:03   ` Hemant Agrawal
2024-11-15  6:05 ` [PATCH 13/16] crypto/dpaa_sec: " Stephen Hemminger
2024-11-18  7:03   ` Hemant Agrawal
2024-11-15  6:05 ` [PATCH 14/16] event/dpaa: " Stephen Hemminger
2024-11-18  7:04   ` Hemant Agrawal
2024-11-15  6:05 ` [PATCH 15/16] net/dpaa: " Stephen Hemminger
2024-11-18  7:04   ` Hemant Agrawal
2024-11-15  6:05 ` [PATCH 16/16] net/dpaa2: " Stephen Hemminger
2024-11-18  7:04   ` Hemant Agrawal
2024-11-18 18:20 ` [PATCH v2 00/19] minor fixes from PVS studio bug list Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 01/19] common/cnxk: remove duplicate condition Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 02/19] net/cpfl: avoid calling log (printf) with null Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 03/19] raw/cnxk_gpio: fix file descriptor leak Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 04/19] net/ntnic: remove dead code Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 05/19] net/i40e: remove duplicate code Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 06/19] eal: fix out of bounds access in devargs Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 07/19] net/qede: fix missing debug string Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 08/19] examples/ptpclient: replace rte_memcpy with assignment Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 09/19] examples/ptpclient: fix self memcmp Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 10/19] net/octeon_ep: remove duplicate code Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 11/19] net/hinic: fix flow type bitmask overflow Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 12/19] crypto/dpaa2_sec: fix bitmask truncation Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 13/19] crypto/dpaa_sec: " Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 14/19] event/dpaa: " Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 15/19] net/dpaa: " Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 16/19] net/dpaa2: " Stephen Hemminger
2024-11-18 18:20   ` [PATCH v2 17/19] net/qede: don't use same loop variable twice Stephen Hemminger
2024-11-18 18:20   ` Stephen Hemminger [this message]
2024-11-18 18:21   ` [PATCH v2 19/19] common/cnxk: fix null ptr check Stephen Hemminger

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