Patch "iw_cxgb4: drop listen destroy replies if no ep found" has been added to the 4.13-stable tree

Patch "iw_cxgb4: drop listen destroy replies if no ep found" has been added to the 4.13-stable tree

[gregkh]

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

    iw_cxgb4: drop listen destroy replies if no ep found

to the 4.13-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:
     iw_cxgb4-drop-listen-destroy-replies-if-no-ep-found.patch
and it can be found in the queue-4.13 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 3c8415cc7aff467faba25841fb859660ac14a04e Mon Sep 17 00:00:00 2001
From: Steve Wise <swise@opengridcomputing.com>
Date: Tue, 5 Sep 2017 11:52:33 -0700
Subject: iw_cxgb4: drop listen destroy replies if no ep found

From: Steve Wise <swise@opengridcomputing.com>

commit 3c8415cc7aff467faba25841fb859660ac14a04e upstream.

If the thread waiting for a CLOSE_LISTSRV_RPL times out and bails,
then we need to handle a subsequent CPL if it arrives and the stid has
been released.  In this case silently drop it.

Signed-off-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/hw/cxgb4/cm.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -2333,9 +2333,14 @@ static int close_listsrv_rpl(struct c4iw
 	unsigned int stid = GET_TID(rpl);
 	struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
 
+	if (!ep) {
+		pr_debug("%s stid %d lookup failure!\n", __func__, stid);
+		goto out;
+	}
 	pr_debug("%s ep %p\n", __func__, ep);
 	c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
 	c4iw_put_ep(&ep->com);
+out:
 	return 0;
 }
 


Patches currently in stable-queue which might be from swise@opengridcomputing.com are

queue-4.13/iw_cxgb4-drop-listen-destroy-replies-if-no-ep-found.patch
queue-4.13/iw_cxgb4-put-ep-reference-in-pass_accept_req.patch
queue-4.13/iw_cxgb4-remove-the-stid-on-listen-create-failure.patch