Files
linux/drivers
Yoshihiro Shimoda 6f6fa8061f ravb: Fix use-after-free issue in ravb_tx_timeout_work()
[ Upstream commit 3971442870 ]

The ravb_stop() should call cancel_work_sync(). Otherwise,
ravb_tx_timeout_work() is possible to use the freed priv after
ravb_remove() was called like below:

CPU0			CPU1
			ravb_tx_timeout()
ravb_remove()
unregister_netdev()
free_netdev(ndev)
// free priv
			ravb_tx_timeout_work()
			// use priv

unregister_netdev() will call .ndo_stop() so that ravb_stop() is
called. And, after phy_stop() is called, netif_carrier_off()
is also called. So that .ndo_tx_timeout() will not be called
after phy_stop().

Fixes: c156633f13 ("Renesas Ethernet AVB driver proper")
Reported-by: Zheng Wang <zyytlz.wz@163.com>
Closes: https://lore.kernel.org/netdev/20230725030026.1664873-1-zyytlz.wz@163.com/
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20231005011201.14368-3-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-10-19 23:08:53 +02:00
..
2023-09-13 09:42:56 +02:00
2023-10-06 14:57:04 +02:00
2023-07-23 13:49:37 +02:00
2023-07-19 16:21:57 +02:00
2023-10-10 22:00:38 +02:00
2023-09-13 09:42:58 +02:00
2023-10-06 14:56:58 +02:00
2023-07-19 16:21:48 +02:00