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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ziyang Xuan <william.xuanziyang@huawei.com>,
	Marc Kleine-Budde <mkl@pengutronix.de>,
	Oliver Hartkopp <socketcan@hartkopp.net>,
	Sasha Levin <sashal@kernel.org>,
	davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com, linux-can@vger.kernel.org,
	netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 17/25] can: bcm: check the result of can_send() in bcm_can_tx()
Date: Sun,  9 Oct 2022 18:24:22 -0400	[thread overview]
Message-ID: <20221009222436.1219411-17-sashal@kernel.org> (raw)
In-Reply-To: <20221009222436.1219411-1-sashal@kernel.org>

From: Ziyang Xuan <william.xuanziyang@huawei.com>

[ Upstream commit 3fd7bfd28cfd68ae80a2fe92ea1615722cc2ee6e ]

If can_send() fail, it should not update frames_abs counter
in bcm_can_tx(). Add the result check for can_send() in bcm_can_tx().

Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Suggested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Link: https://lore.kernel.org/all/9851878e74d6d37aee2f1ee76d68361a46f89458.1663206163.git.william.xuanziyang@huawei.com
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/can/bcm.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/can/bcm.c b/net/can/bcm.c
index 3c825b158fb5..74e555a22de7 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -273,6 +273,7 @@ static void bcm_can_tx(struct bcm_op *op)
 	struct sk_buff *skb;
 	struct net_device *dev;
 	struct canfd_frame *cf = op->frames + op->cfsiz * op->currframe;
+	int err;
 
 	/* no target device? => exit */
 	if (!op->ifindex)
@@ -297,11 +298,11 @@ static void bcm_can_tx(struct bcm_op *op)
 	/* send with loopback */
 	skb->dev = dev;
 	can_skb_set_owner(skb, op->sk);
-	can_send(skb, 1);
+	err = can_send(skb, 1);
+	if (!err)
+		op->frames_abs++;
 
-	/* update statistics */
 	op->currframe++;
-	op->frames_abs++;
 
 	/* reached last frame? */
 	if (op->currframe >= op->nframes)
-- 
2.35.1


  parent reply	other threads:[~2022-10-09 22:56 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-09 22:24 [PATCH AUTOSEL 4.19 01/25] wifi: brcmfmac: fix invalid address access when enabling SCAN log level Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 02/25] openvswitch: Fix double reporting of drops in dropwatch Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 03/25] openvswitch: Fix overreporting " Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 04/25] tcp: annotate data-race around tcp_md5sig_pool_populated Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 05/25] wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg() Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 06/25] xfrm: Update ipcomp_scratches with NULL when freed Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 07/25] net: xscale: Fix return type for implementation of ndo_start_xmit Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 08/25] net: lantiq_etop: " Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 09/25] net: ftmac100: fix endianness-related issues from 'sparse' Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 10/25] wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 11/25] Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create() Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 12/25] net: davicom: Fix return type of dm9000_start_xmit Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 13/25] net: ethernet: ti: davinci_emac: Fix return type of emac_dev_xmit Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 14/25] net: korina: Fix return type of korina_send_packet Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 15/25] Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 16/25] wifi: ath10k: reset pointer after memory free to avoid potential use-after-free Sasha Levin
2022-10-09 22:24   ` Sasha Levin
2022-10-18  9:53   ` Pavel Machek
2022-10-18  9:53     ` Pavel Machek
2022-10-18 11:10     ` Greg KH
2022-10-18 11:10       ` Greg KH
2022-10-09 22:24 ` Sasha Levin [this message]
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 18/25] wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620 Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 19/25] wifi: rt2x00: set correct TX_SW_CFG1 MAC register for MT7620 Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 20/25] wifi: rt2x00: set SoC wmac clock register Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 21/25] wifi: rt2x00: correctly set BBP register 86 for MT7620 Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 22/25] net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 23/25] Bluetooth: L2CAP: Fix user-after-free Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 24/25] libbpf: Fix overrun in netlink attribute iteration Sasha Levin
2022-10-09 22:24 ` [PATCH AUTOSEL 4.19 25/25] r8152: Rate limit overflow messages Sasha Levin

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