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RDMA/nes: Async event for closed QP causes crash 

Under abnormal termination, modify_qp() closes the QP, and async event
(AE) handling also attempts to close the same QP, causing a crash.
Fix this by checking the state of the QP before processing the AE.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Faisal Latif 2010-05-21 16:55:03 -05:00 committed by Roland Dreier
parent 39942a028c
commit df02902313
1 changed files with 9 additions and 0 deletions
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9
drivers/infiniband/hw/nes/nes_hw.c
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@ -3422,6 +3422,7 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
struct nes_adapter *nesadapter = nesdev->nesadapter;
u32 aeq_info;
u32 next_iwarp_state = 0;
u32 aeqe_cq_id;
u16 async_event_id;
u8 tcp_state;
u8 iwarp_state;
@ -3449,6 +3450,14 @@ static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]), aeqe,
nes_tcp_state_str[tcp_state], nes_iwarp_state_str[iwarp_state]);
aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
if (aeq_info & NES_AEQE_QP) {
if ((!nes_is_resource_allocated(nesadapter, nesadapter->allocated_qps,
aeqe_cq_id)) ||
(atomic_read(&nesqp->close_timer_started)))
return;
}
switch (async_event_id) {
case NES_AEQE_AEID_LLP_FIN_RECEIVED:
if (nesqp->term_flags)