Patch "IB/IWPM: Fix a potential skb leak" has been added to the 4.4-stable tree

Patch "IB/IWPM: Fix a potential skb leak" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    IB/IWPM: Fix a potential skb leak

to the 4.4-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:
     ib-iwpm-fix-a-potential-skb-leak.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5ed935e861a4cbf2158ad3386d6d26edd60d2658 Mon Sep 17 00:00:00 2001
From: Mark Bloch <markb@mellanox.com>
Date: Fri, 6 May 2016 22:45:24 +0300
Subject: IB/IWPM: Fix a potential skb leak

From: Mark Bloch <markb@mellanox.com>

commit 5ed935e861a4cbf2158ad3386d6d26edd60d2658 upstream.

In case ibnl_put_msg fails in send_nlmsg_done,
the function returns with -ENOMEM without freeing.

This patch fixes this behavior.

Fixes: 30dc5e63d6a5 ("RDMA/core: Add support for iWARP Port Mapper user space service")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/core/iwpm_util.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -634,6 +634,7 @@ static int send_nlmsg_done(struct sk_buf
 	if (!(ibnl_put_msg(skb, &nlh, 0, 0, nl_client,
 			   RDMA_NL_IWPM_MAPINFO, NLM_F_MULTI))) {
 		pr_warn("%s Unable to put NLMSG_DONE\n", __func__);
+		dev_kfree_skb(skb);
 		return -ENOMEM;
 	}
 	nlh->nlmsg_type = NLMSG_DONE;


Patches currently in stable-queue which might be from markb@mellanox.com are

queue-4.4/ib-iwpm-fix-a-potential-skb-leak.patch
queue-4.4/ib-sa-use-correct-free-function.patch