Commit be65f086 authored by Sean Hefty's avatar Sean Hefty Committed by Roland Dreier

RDMA/cma: Fix synchronization with device removal in cma_iw_handler

The cma_iw_handler needs to validate the state of the rdma_cm_id before
processing a new connection request to ensure that a device removal is
not already being processed for the same rdma_cm_id.  Without the state
check, the user can receive simultaneous callbacks for the same cm_id, or
a callback after they've destroyed the cm_id.
Signed-off-by: default avatarSean Hefty <sean.hefty@intel.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 8aa08602
......@@ -1183,9 +1183,10 @@ static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event)
struct sockaddr_in *sin;
int ret = 0;
memset(&event, 0, sizeof event);
atomic_inc(&id_priv->dev_remove);
if (cma_disable_remove(id_priv, CMA_CONNECT))
return 0;
memset(&event, 0, sizeof event);
switch (iw_event->event) {
case IW_CM_EVENT_CLOSE:
event.event = RDMA_CM_EVENT_DISCONNECTED;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment