This is a note to let you know that I've just added the patch titled
net/mlx5: Release tunnel device after tc update skb
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5-release-tunnel-device-after-tc-update-skb.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 12c356479c35610c8e5dbbc850ca4325babcfabb
Author: Chris Mi <cmi@xxxxxxxxxx>
Date: Tue Apr 4 03:45:04 2023 +0300
net/mlx5: Release tunnel device after tc update skb
[ Upstream commit 4fbef0f8ea6350eaea89b1e3175f9325252913ac ]
The cited commit causes a regression. Tunnel device is not released
after tc update skb if skb needs to be freed. The following error
message will be printed:
unregister_netdevice: waiting for vxlan1 to become free. Usage count = 11
Fix it by releasing tunnel device if skb needs to be freed.
Fixes: 93a1ab2c545b ("net/mlx5: Refactor tc miss handling to a single function")
Signed-off-by: Chris Mi <cmi@xxxxxxxxxx>
Reviewed-by: Maor Dickman <maord@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
index 8f7452dc00ee3..668fdee9cf057 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
@@ -715,5 +715,6 @@ void mlx5e_rep_tc_receive(struct mlx5_cqe64 *cqe, struct mlx5e_rq *rq,
return;
free_skb:
+ dev_put(tc_priv.fwd_dev);
dev_kfree_skb_any(skb);
}
