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hw/acpi/erst: Do not ignore Error* in realize handler

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erst_realizefn() passes @errp to functions without checking for
failure.  If it runs into another failure, it trips error_setv()'s
assertion.

Use the ERRP_GUARD() macro and check *errp, as suggested in commit
ae7c80a7bd ("error: New macro ERRP_GUARD()").

Cc: qemu-stable@nongnu.org
Fixes: f7e26ffa59 ("ACPI ERST: support for ACPI ERST feature")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231120130017.81286-1-philmd@linaro.org>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2023-11-20 14:00:17 +01:00 committed by Michael S. Tsirkin
parent 714a1415d7
commit 20bc50137f
1 changed files with 10 additions and 0 deletions
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10
hw/acpi/erst.c
View file

@ -947,6 +947,7 @@ static const VMStateDescription erst_vmstate = {
static void erst_realizefn(PCIDevice *pci_dev, Error **errp)
{
ERRP_GUARD();
ERSTDeviceState *s = ACPIERST(pci_dev);
trace_acpi_erst_realizefn_in();
@ -964,9 +965,15 @@ static void erst_realizefn(PCIDevice *pci_dev, Error **errp)
/* HostMemoryBackend size will be multiple of PAGE_SIZE */
s->storage_size = object_property_get_int(OBJECT(s->hostmem), "size", errp);
if (*errp) {
return;
}
/* Initialize backend storage and record_count */
check_erst_backend_storage(s, errp);
if (*errp) {
return;
}
/* BAR 0: Programming registers */
memory_region_init_io(&s->iomem_mr, OBJECT(pci_dev), &erst_reg_ops, s,
@ -977,6 +984,9 @@ static void erst_realizefn(PCIDevice *pci_dev, Error **errp)
memory_region_init_ram(&s->exchange_mr, OBJECT(pci_dev),
"erst.exchange",
le32_to_cpu(s->header->record_size), errp);
if (*errp) {
return;
}
pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY,
&s->exchange_mr);