motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 02:03:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw: Fix error API violation around object_property_set_link()

Browse source 
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL.  Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call.

virtio_gpu_pci_base_realize(), virtio_vga_base_realize(),
sparc32_ledma_device_realize(), sparc32_dma_realize(),
sparc32_dma_realize() xilinx_axidma_realize(), mips_cps_realize(),
macio_realize_ide(), xilinx_enet_realize(), and
virtio_iommu_pci_realize() are wrong that way: they reuse the argument
they pass to object_property_set_link() for another call.

Harmless, because object_property_set_link() can't actually fail for
them: it fails when the property doesn't exist, is not settable, or
its .check() method fails.  Fix by passing &error_abort instead.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Alistair Francis <alistair@alistair23.me>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Cc: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Cc: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200630090351.1247703-16-armbru@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Markus Armbruster 2020-06-30 11:03:40 +02:00
parent 9bc6bfdf67
commit 2726dc51e0
8 changed files with 16 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

6
hw/mips/cps.c
View file

@ -150,8 +150,10 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
object_property_set_int(OBJECT(&s->gcr), s->num_vp, "num-vp", &err);
object_property_set_int(OBJECT(&s->gcr), 0x800, "gcr-rev", &err);
object_property_set_int(OBJECT(&s->gcr), gcr_base, "gcr-base", &err);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->gic.mr), "gic", &err);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->cpc.mr), "cpc", &err);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->gic.mr), "gic",
&error_abort);
object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->cpc.mr), "cpc",
&error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->gcr), &err);
if (err != NULL) {
error_propagate(errp, err);