Patch "qed: Fix mapping leak on LL2 rx flow" has been added to the 4.9-stable tree

Patch "qed: Fix mapping leak on LL2 rx flow" has been added to the 4.9-stable tree

[gregkh]

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

    qed: Fix mapping leak on LL2 rx flow

to the 4.9-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:
     qed-fix-mapping-leak-on-ll2-rx-flow.patch
and it can be found in the queue-4.9 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 foo@baz Mon Dec 18 14:12:34 CET 2017
From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>
Date: Tue, 14 Mar 2017 15:26:00 +0200
Subject: qed: Fix mapping leak on LL2 rx flow

From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>


[ Upstream commit 752ecb2da11124a948567076b60767dc8034cfa5 ]

When receiving an Rx LL2 packet, qed fails to unmap the previous buffer.

Fixes: 0a7fb11c23c0 ("qed: Add Light L2 support");
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -187,6 +187,8 @@ static void qed_ll2b_complete_rx_packet(
 	/* If need to reuse or there's no replacement buffer, repost this */
 	if (rc)
 		goto out_post;
+	dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
+			 cdev->ll2->rx_size, DMA_FROM_DEVICE);
 
 	skb = build_skb(buffer->data, 0);
 	if (!skb) {


Patches currently in stable-queue which might be from Yuval.Mintz@cavium.com are

queue-4.9/qed-fix-interrupt-flags-on-rx-ll2.patch
queue-4.9/qed-align-cids-according-to-dorq-requirement.patch
queue-4.9/qed-fix-mapping-leak-on-ll2-rx-flow.patch