[PATCH net v3 1/4] octeon_ep: fix race conditions in ndo_get_stats64

[Shinas Rasheed]

ndo_get_stats64() can race with ndo_stop(), which frees input and
output queue resources. Call synchronize_net() to avoid such races.

Fixes: 6a610a46bad1 ("octeon_ep: add support for ndo ops")
Signed-off-by: Shinas Rasheed <srasheed@xxxxxxxxxxx>
---
V3: 
  - No changes 

V2: https://lore.kernel.org/all/20241216075842.2394606-2-srasheed@xxxxxxxxxxx/
  - Changed sync mechanism to fix race conditions from using an atomic
    set_bit ops to a much simpler synchronize_net()

V1: https://lore.kernel.org/all/20241203072130.2316913-2-srasheed@xxxxxxxxxxx/

 drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index 549436efc204..941bbaaa67b5 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -757,6 +757,7 @@ static int octep_stop(struct net_device *netdev)
 {
 	struct octep_device *oct = netdev_priv(netdev);
 
+	synchronize_net();
 	netdev_info(netdev, "Stopping the device ...\n");
 
 	octep_ctrl_net_set_link_status(oct, OCTEP_CTRL_NET_INVALID_VFID, false,
-- 
2.25.1