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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 5.15 36/46] can: bcm: check the result of can_send() in bcm_can_tx()
Date: Sun,  9 Oct 2022 18:19:01 -0400	[thread overview]
Message-ID: <20221009221912.1217372-36-sashal@kernel.org> (raw)
In-Reply-To: <20221009221912.1217372-1-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 e5ffd2bd62ab..aab3a18f4a90 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -274,6 +274,7 @@ 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)
@@ -298,11 +299,11 @@ 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 22:43 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-09 22:18 [PATCH AUTOSEL 5.15 01/46] wifi: rtw88: phy: fix warning of possible buffer overflow Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 02/46] wifi: brcmfmac: fix invalid address access when enabling SCAN log level Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 03/46] bpftool: Clear errno after libcap's checks Sasha Levin
2022-10-09 22:18 ` [Intel-wired-lan] [PATCH AUTOSEL 5.15 04/46] ice: set tx_tstamps when creating new Tx rings via ethtool Sasha Levin
2022-10-09 22:18   ` Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 05/46] net: ethernet: ti: davinci_mdio: Add workaround for errata i2329 Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 06/46] openvswitch: Fix double reporting of drops in dropwatch Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 07/46] openvswitch: Fix overreporting " Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 08/46] tcp: annotate data-race around tcp_md5sig_pool_populated Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 09/46] micrel: ksz8851: fixes struct pointer issue Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 10/46] genetlink: hold read cb_lock during iteration of genl_fam_idr in genl_bind() Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 11/46] x86/mce: Retrieve poison range from hardware Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 12/46] wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg() Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 13/46] thunderbolt: Add back Intel Falcon Ridge end-to-end flow control workaround Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 14/46] xfrm: Update ipcomp_scratches with NULL when freed Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 15/46] net: broadcom: Fix return type for implementation of Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 16/46] net: xscale: Fix return type for implementation of ndo_start_xmit Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 17/46] net: lantiq_etop: " Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 18/46] net: ftmac100: fix endianness-related issues from 'sparse' Sasha Levin
2022-10-09 22:18 ` [Intel-wired-lan] [PATCH AUTOSEL 5.15 19/46] iavf: Fix race between iavf_close and iavf_reset_task Sasha Levin
2022-10-09 22:18   ` Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 20/46] wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 21/46] Bluetooth: btintel: Mark Intel controller to support LE_STATES quirk Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 22/46] regulator: core: Prevent integer underflow Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 23/46] wifi: mt76: mt7921: reset msta->airtime_ac while clearing up hw value Sasha Levin
2022-10-09 22:18   ` Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 24/46] Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create() Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 25/46] net: davicom: Fix return type of dm9000_start_xmit Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 26/46] net: ethernet: ti: davinci_emac: Fix return type of emac_dev_xmit Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 27/46] net: ethernet: litex: Fix return type of liteeth_start_xmit Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 28/46] net: korina: Fix return type of korina_send_packet Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 29/46] net: wwan: iosm: Fix return type of ipc_wwan_link_transmit Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 30/46] net: sfp: re-implement soft state polling setup Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 31/46] net: sfp: move quirk handling into sfp.c Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 32/46] net: sfp: move Alcatel Lucent 3FE46541AA fixup Sasha Levin
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 33/46] net/sched: taprio: taprio_dump and taprio_change are protected by rtnl_mutex Sasha Levin
2022-10-10 13:33   ` Vladimir Oltean
2022-10-09 22:18 ` [PATCH AUTOSEL 5.15 34/46] Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 35/46] wifi: ath10k: reset pointer after memory free to avoid potential use-after-free Sasha Levin
2022-10-09 22:19   ` Sasha Levin
2022-10-09 22:19 ` Sasha Levin [this message]
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 37/46] wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620 Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 38/46] wifi: rt2x00: set correct TX_SW_CFG1 MAC register for MT7620 Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 39/46] wifi: rt2x00: set VGC gain for both chains of MT7620 Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 40/46] wifi: rt2x00: set SoC wmac clock register Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 41/46] wifi: rt2x00: correctly set BBP register 86 for MT7620 Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 42/46] hwmon: (sht4x) do not overflow clamping operation on 32-bit platforms Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 43/46] net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 44/46] Bluetooth: L2CAP: Fix user-after-free Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 45/46] libbpf: Fix overrun in netlink attribute iteration Sasha Levin
2022-10-09 22:19 ` [PATCH AUTOSEL 5.15 46/46] r8152: Rate limit overflow messages Sasha Levin

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