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RDMA/cxgb4: Don't change QP state outside EP lock

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Concurrent ingress CLOSE and ULP ABORT operations causes a crash due
to a race condition where the close path releases the EP lock and then
tries to move the QP state to CLOSED.  This must be done inside the EP
lock to avoid the race.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Steve Wise
2011-05-09 22:06:22 -07:00
committed by Roland Dreier
parent 693d92a1bb
commit 30c95c2d49
3 changed files with 9 additions and 12 deletions
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1
drivers/infiniband/hw/cxgb4/qp.c
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@@ -1210,7 +1210,6 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
if (ret) {
if (internal)
c4iw_get_ep(&qhp->ep->com);
disconnect = abort = 1;
goto err;
}
break;