From: Tariq Toukan <tariqt@mellanox.com>
Date: Mon, 16 Sep 2019 17:19:12 +0300
Subject: net/mlx5e: Tx, Zero-memset WQE info struct upon update
Patch-mainline: v5.4-rc6
Git-commit: 500f36a485862cee15752b58a5a9a50c1f59ff58
References: jsc#SLE-8464

Not all fields of WQE info are being written in the function,
having some leftovers from previous rounds.
Zero-memset it upon update.

Particularly, not nullifying the wi->resync_dump_frag field
will cause double free of the kTLS DUMPed frags.

Fixes: d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -92,7 +92,7 @@ mlx5e_fill_sq_frag_edge(struct mlx5e_txq
 
 	/* fill sq frag edge with nops to avoid wqe wrapping two pages */
 	for (; wi < edge_wi; wi++) {
-		wi->skb        = NULL;
+		memset(wi, 0, sizeof(*wi));
 		wi->num_wqebbs = 1;
 		mlx5e_post_nop(wq, sq->sqn, &sq->pc);
 	}