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e04b2cfe61
linux/drivers/net/can
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Marc Kleine-Budde e04b2cfe61 can: m_can: m_can_tx_work_queue(): fix tx_skb race condition 
The m_can_start_xmit() function checks if the cdev->tx_skb is NULL and
returns with NETDEV_TX_BUSY in case tx_sbk is not NULL.

There is a race condition in the m_can_tx_work_queue(), where first
the skb is send to the driver and then the case tx_sbk is set to NULL.
A TX complete IRQ might come in between and wake the queue, which
results in tx_skb not being cleared yet.

Fixes: f524f829b7 ("can: m_can: Create a m_can platform framework")
Tested-by: Torin Cooper-Bennun <torin@maxiluxsystems.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-05-06 09:24:07 +02:00
..
c_can can: c_can: remove unused enum BOSCH_C_CAN_PLATFORM 2021-04-07 09:31:28 +02:00
cc770 can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
dev can: skb: alloc_can{,fd}_skb(): set "cf" to NULL if skb allocation fails 2021-04-07 09:31:19 +02:00
ifi_canfd can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
m_can can: m_can: m_can_tx_work_queue(): fix tx_skb race condition 2021-05-06 09:24:07 +02:00
mscan can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
peak_canfd module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
rcar can: dev: can_free_echo_skb(): extend to return can frame length 2021-03-30 11:14:28 +02:00
sja1000 can: dev: can_free_echo_skb(): extend to return can frame length 2021-03-30 11:14:28 +02:00
softing can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
spi can: mcp251x: fix resume from sleep before interface was brought up 2021-05-06 09:24:07 +02:00
usb can: etas_es58x: Fix a couple of spelling mistakes 2021-04-24 14:36:50 +02:00
at91_can.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
flexcan.c can: flexcan: flexcan_chip_freeze(): fix chip freeze for missing bitrate 2021-03-16 08:41:26 +01:00
grcan.c can: dev: can_free_echo_skb(): extend to return can frame length 2021-03-30 11:14:28 +02:00
janz-ican3.c can: replace can_dlc as variable/element for payload length 2020-11-20 12:04:12 +01:00
Kconfig can: grcan: add missing Kconfig dependency to HAS_IOMEM 2021-03-30 11:14:45 +02:00
kvaser_pciefd.c can: kvaser_pciefd: Always disable bus load reporting 2021-03-16 08:41:26 +01:00
led.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile can: dev: move driver related infrastructure into separate subdir 2021-01-13 09:42:58 +01:00
pch_can.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
slcan.c tty: remove TTY_LDISC_MAGIC 2021-03-10 09:34:06 +01:00
sun4i_can.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
ti_hecc.c can: dev: can_rx_offload_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
vcan.c net: introduce CAN specific pointer in the struct net_device 2021-02-24 14:32:15 -08:00
vxcan.c net: introduce CAN specific pointer in the struct net_device 2021-02-24 14:32:15 -08:00
xilinx_can.c can: xilinx_can: Simplify code by using dev_err_probe() 2021-03-30 11:14:46 +02:00