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hw: do not pass NULL to memory_region_init from instance_init

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This causes the region to outlive the object, because it attaches the
region to /machine.  This is not nice for the "realize" method, but
much worse for "instance_init" because it can cause dangling pointers
after a simple object_new/object_unref pair.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1443689999-12182-3-git-send-email-armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-10-01 10:59:51 +02:00 • committed by Markus Armbruster
parent 2e2b8eb70f
commit 81e0ab48dd
7 changed files with 12 additions and 12 deletions
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2
hw/arm/pxa2xx.c
View file

@ -1958,7 +1958,7 @@ static void pxa2xx_fir_instance_init(Object *obj)
PXA2xxFIrState *s = PXA2XX_FIR(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->iomem, NULL, &pxa2xx_fir_ops, s,
memory_region_init_io(&s->iomem, obj, &pxa2xx_fir_ops, s,
"pxa2xx-fir", 0x1000);
sysbus_init_mmio(sbd, &s->iomem);
sysbus_init_irq(sbd, &s->irq);