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List:       linux-rdma
Subject:    [PATCH] iw_cxgb4: Drop peer_abort when no endpoint found.
From:       Steve Wise <swise () opengridcomputing ! com>
Date:       2012-04-30 20:31:29
Message-ID: 20120430203129.14228.19855.stgit () build ! ogc ! int
[Download RAW message or body]

Log a warning and drop the abort message.  Otherwise
we will do a bogus wake_up() and crash.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: stable@vger.kernel.org
---

 drivers/infiniband/hw/cxgb4/cm.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 8f43143..b75d407 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -2656,6 +2656,12 @@ static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
 	unsigned int tid = GET_TID(req);
 
 	ep = lookup_tid(t, tid);
+	if (!ep) {
+		printk(KERN_WARNING MOD
+		       "Abort on non-existent endpoint, tid %d\n", tid);
+		kfree_skb(skb);
+		return 0;
+	}
 	if (is_neg_adv_abort(req->status)) {
 		PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
 		     ep->hwtid);

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