P J P <ppan...@redhat.com> 于2020年6月25日周四 上午2:59写道：
>
> From: Prasad J Pandit <p...@fedoraproject.org>
>
> Add pci-intack mmio write method to avoid NULL pointer dereference
> issue.
>
> Reported-by: Lei Sun <slei.cas...@gmail.com>
> Signed-off-by: Prasad J Pandit <p...@fedoraproject.org>
Reviewed-by: Li Qiang <liq...@gmail.com>
> ---
> hw/pci-host/prep.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
> index 367e408b91..3c8ff6af03 100644
> --- a/hw/pci-host/prep.c
> +++ b/hw/pci-host/prep.c
> @@ -26,6 +26,7 @@
> #include "qemu/osdep.h"
> #include "qemu-common.h"
> #include "qemu/units.h"
> +#include "qemu/log.h"
> #include "qapi/error.h"
> #include "hw/pci/pci.h"
> #include "hw/pci/pci_bus.h"
> @@ -119,8 +120,15 @@ static uint64_t raven_intack_read(void *opaque, hwaddr
> addr,
> return pic_read_irq(isa_pic);
> }
>
> +static void raven_intack_write(void *opaque, hwaddr addr,
> + uint64_t data, unsigned size)
> +{
> + qemu_log_mask(LOG_UNIMP, "%s not implemented\n", __func__);
> +}
> +
> static const MemoryRegionOps raven_intack_ops = {
> .read = raven_intack_read,
> + .write = raven_intack_write,
> .valid = {
> .max_access_size = 1,
> },
> --
> 2.26.2
>
