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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Alaa Hleihel <alaa@mellanox.com>,
        Maor Gottlieb <maorg@mellanox.com>,
        Leon Romanovsky <leonro@mellanox.com>,
        Jason Gunthorpe <jgg@mellanox.com>
Subject: [PATCH 5.4 37/57] RDMA/mlx4: Initialize ib_spec on the stack
Date:   Mon,  4 May 2020 19:57:41 +0200
Message-Id: <20200504165459.561594268@linuxfoundation.org>
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From: Alaa Hleihel <alaa@mellanox.com>

commit c08cfb2d8d78bfe81b37cc6ba84f0875bddd0d5c upstream.

Initialize ib_spec on the stack before using it, otherwise we will have
garbage values that will break creating default rules with invalid parsing
error.

Fixes: a37a1a428431 ("IB/mlx4: Add mechanism to support flow steering over IB links")
Link: https://lore.kernel.org/r/20200413132235.930642-1-leon@kernel.org
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx4/main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1492,8 +1492,9 @@ static int __mlx4_ib_create_default_rule
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) {
+		union ib_flow_spec ib_spec = {};
 		int ret;
-		union ib_flow_spec ib_spec;
+
 		switch (pdefault_rules->rules_create_list[i]) {
 		case 0:
 			/* no rule */