[SCSI] zfcp: Avoid referencing freed memory in req send
Avoid referencing a fsf request after sending it in fcp_fsf_req_send, it might have already completed and deallocated. Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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1 changed files with 4 additions and 3 deletions
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@ -766,8 +766,9 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
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static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
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{
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struct zfcp_adapter *adapter = req->adapter;
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unsigned long flags;
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int idx;
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unsigned long flags;
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int idx;
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int with_qtcb = (req->qtcb != NULL);
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/* put allocated FSF request into hash table */
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spin_lock_irqsave(&adapter->req_list_lock, flags);
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@ -789,7 +790,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
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}
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/* Don't increase for unsolicited status */
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if (req->qtcb)
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if (with_qtcb)
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adapter->fsf_req_seq_no++;
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adapter->req_no++;
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