6.12-stable review patch. If anyone has any objections, please let me know.
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From: Sathesh B Edara sedara@marvell.com
[ Upstream commit 34f42736b325287a7b2ce37e415838f539767bda ]
When the host loses heartbeat messages from the device, the driver calls the device-specific ndo_stop function, which frees the resources. If the driver is unloaded in this scenario, it calls ndo_stop again, attempting to free resources that have already been freed, leading to a host hang issue. To resolve this, dev_close should be called instead of the device-specific stop function.dev_close internally calls ndo_stop to stop the network interface and performs additional cleanup tasks. During the driver unload process, if the device is already down, ndo_stop is not called.
Fixes: 5cb96c29aa0e ("octeon_ep: add heartbeat monitor") Signed-off-by: Sathesh B Edara sedara@marvell.com Reviewed-by: Simon Horman horms@kernel.org Link: https://patch.msgid.link/20250429114624.19104-1-sedara@marvell.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c index a89f80bac39b8..1b2f5cae06449 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -1184,7 +1184,7 @@ static void octep_hb_timeout_task(struct work_struct *work) miss_cnt); rtnl_lock(); if (netif_running(oct->netdev)) - octep_stop(oct->netdev); + dev_close(oct->netdev); rtnl_unlock(); }