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RDMA/nes: Fix crash when listener destroyed during loopback setup

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When a listener is destroyed and there is an MPA response pending for
loopback connection, the active side cm_node gets destroyed twice:
once in cm_event_connect_error() and again in nes_accept()/nes_reject().

Increment the cm_node's refcount so it's not destroyed by
cm_event_connect_error().

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Faisal Latif 2010-02-12 19:57:04 +00:00 committed by Roland Dreier
parent 6e10d2e407
commit 43093b9412
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/hw/nes/nes_cm.c
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@ -1011,9 +1011,10 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
event.cm_info.loc_port =
loopback->loc_port;
event.cm_info.cm_id = loopback->cm_id;
add_ref_cm_node(loopback);
loopback->state = NES_CM_STATE_CLOSED;
cm_event_connect_error(&event);
cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
loopback->state = NES_CM_STATE_CLOSED;
rem_ref_cm_node(cm_node->cm_core,
cm_node);