From a808c0865b720e22ca2929ec3d362d4610fbad51 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Mon, 14 Aug 2017 08:10:29 +0200 Subject: hw/misc/mmio_interface: Return after error_setg() to avoid crash QEMU currently abort()s if the user tries to specify the mmio_interface device without parameters: x86_64-softmmu/qemu-system-x86_64 -nographic -device mmio_interface qemu-system-x86_64: /home/thuth/devel/qemu/util/error.c:57: error_setv: Assertion `*errp == ((void *)0)' failed. Aborted (core dumped) This happens because the realize function is trying to set the errp twice in this case. After setting an error, the realize function should immediately return instead. Signed-off-by: Thomas Huth Signed-off-by: Michael Tokarev --- hw/misc/mmio_interface.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/misc/mmio_interface.c b/hw/misc/mmio_interface.c index 6f004d2bab..da154e5c95 100644 --- a/hw/misc/mmio_interface.c +++ b/hw/misc/mmio_interface.c @@ -63,10 +63,12 @@ static void mmio_interface_realize(DeviceState *dev, Error **errp) if (!s->host_ptr) { error_setg(errp, "host_ptr property must be set"); + return; } if (!s->subregion) { error_setg(errp, "subregion property must be set"); + return; } memory_region_init_ram_ptr(&s->ram_mem, OBJECT(s), "ram", -- cgit v1.2.1