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authorSteve Wise <swise@opengridcomputing.com>2017-09-05 11:52:33 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-05 09:47:31 +0200
commit966176739139d0a5c915c6a59d0ab711310f9639 (patch)
treee26c673183906f2c106d73ad1d83e1a5c4a54ca0
parent0ea30c797c6f6f2e1606ab8960387a88e68f6fe4 (diff)
iw_cxgb4: drop listen destroy replies if no ep found
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>
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index e49b34c3b136..9ad7cd42e9a8 100644
--- 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_dev *dev, struct sk_buff *skb)
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;
}