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Re: [PATCH v2] ACPI: Avoid infinite recursion when dump-vmstate
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH v2] ACPI: Avoid infinite recursion when dump-vmstate |
Date: |
Thu, 12 Nov 2020 03:56:21 -0500 |
On Thu, Nov 12, 2020 at 10:06:38AM +0800, Peng Liang wrote:
> There is a field with vmstate_ghes_state as vmsd in vmstate_ghes_state,
> which will lead to infinite recursion in dump_vmstate_vmsd.
>
> Fixes: a08a64627b ("ACPI: Record the Generic Error Status Block address")
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Peng Liang <liangpeng10@huawei.com>
> Acked-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> hw/acpi/generic_event_device.c | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
> index 6df400e1ee16..5454be67d5f0 100644
> --- a/hw/acpi/generic_event_device.c
> +++ b/hw/acpi/generic_event_device.c
> @@ -322,6 +322,16 @@ static const VMStateDescription vmstate_ged_state = {
> }
> };
>
> +static const VMStateDescription vmstate_ghes = {
> + .name = "acpi-ghes",
> + .version_id = 1,
> + .minimum_version_id = 1,
> + .fields = (VMStateField[]) {
> + VMSTATE_UINT64(ghes_addr_le, AcpiGhesState),
> + VMSTATE_END_OF_LIST()
> + },
> +};
> +
> static bool ghes_needed(void *opaque)
> {
> AcpiGedState *s = opaque;
> @@ -335,7 +345,7 @@ static const VMStateDescription vmstate_ghes_state = {
> .needed = ghes_needed,
> .fields = (VMStateField[]) {
> VMSTATE_STRUCT(ghes_state, AcpiGedState, 1,
> - vmstate_ghes_state, AcpiGhesState),
> + vmstate_ghes, AcpiGhesState),
> VMSTATE_END_OF_LIST()
> }
> };
> --
> 2.26.2