Re: [Qemu-devel] [PATCH] scsi: mptsas: infinite loop while fetching requests

[P J P]

+-- On Tue, 24 May 2016, P J P wrote --+
| diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c
| index 499c146..be88e16 100644
| --- a/hw/scsi/mptsas.c
| +++ b/hw/scsi/mptsas.c
| @@ -754,11 +754,6 @@ static void mptsas_fetch_request(MPTSASState *s)
|      hwaddr addr;
|      int size;
|  
| -    if (s->state != MPI_IOC_STATE_OPERATIONAL) {
| -        mptsas_set_fault(s, MPI_IOCSTATUS_INVALID_STATE);
| -        return;
| -    }
| -
|      /* Read the message header from the guest first. */
|      addr = s->host_mfa_high_addr | MPTSAS_FIFO_GET(s, request_post);
|      pci_dma_read(pci, addr, req, sizeof(hdr));
| @@ -789,6 +784,10 @@ static void mptsas_fetch_requests(void *opaque)
|  {
|      MPTSASState *s = opaque;
|  
| +    if (s->state != MPI_IOC_STATE_OPERATIONAL) {
| +        mptsas_set_fault(s, MPI_IOCSTATUS_INVALID_STATE);
| +        return;
| +    }
|      while (!MPTSAS_FIFO_EMPTY(s, request_post)) {
|          mptsas_fetch_request(s);
|      }

Ping..!
--
Prasad J Pandit / Red Hat Product Security Team
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