diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-01-09 14:23:11 +0400 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2019-01-09 22:10:17 -0200 |
| commit | ab94c6b42f4ae247843f93956ccc0468b6c75bf3 (patch) | |
| tree | e114e68ab395961bef615aed06b1249e2a63ed46 /hw | |
| parent | 6c36bddf5340138a5fc1c97520030c915a0f1760 (diff) | |
qdev: fix -device scsi-hd,help regression
Since commit ea9ce8934, device_post_init() applies globals directly
from machines and accelerator classes.
There are cases, such as -device scsi-hd,help, where the machine is
setup but there in no accelerator.
Let's skip accelerator globals in this case.
Fixes SEGV:
#0 0x0000555558ea04ff in object_get_class (obj=0x0) at /home/elmarco/src/qemu/build/../qom/object.c:857
#1 0x000055555854c797 in object_apply_compat_props (obj=0x616000078980) at /home/elmarco/src/qemu/build/../hw/core/qdev.c:978
#2 0x000055555854c797 in object_apply_compat_props (obj=0x616000078980) at /home/elmarco/src/qemu/build/../hw/core/qdev.c:973
#3 0x000055555854c959 in device_post_init (obj=0x616000078980) at /home/elmarco/src/qemu/build/../hw/core/qdev.c:989
#4 0x0000555558e9e250 in object_post_init_with_type (ti=<optimized out>, obj=0x616000078980) at /home/elmarco/src/qemu/build/../qom/object.c:365
#5 0x0000555558e9e250 in object_initialize_with_type (data=0x616000078980, size=616, type=<optimized out>) at /home/elmarco/src/qemu/build/../qom/object.c:425
#6 0x0000555558e9e571 in object_new_with_type (type=0x613000031900) at /home/elmarco/src/qemu/build/../qom/object.c:588
#7 0x000055555830c048 in qmp_device_list_properties (typename=typename@entry=0x60200000c2d0 "scsi-hd", errp=errp@entry=0x7fffffffc540) at /home/elmarco/src/qemu/qmp.c:519
#8 0x00005555582c4027 in qdev_device_help (opts=<optimized out>) at /home/elmarco/src/qemu/qdev-monitor.c:283
#9 0x0000555559378fa2 in qemu_opts_foreach (list=<optimized out>, func=func@entry=0x5555582cfca0 <device_help_func>, opaque=opaque@entry=0x0, errp=errp@entry=0x0) at /home/elmarco/src/qemu/util/qemu-option.c:1171
https://bugzilla.redhat.com/show_bug.cgi?id=1664364
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190109102311.7635-1-marcandre.lureau@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Lukáš Doktor <ldoktor@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/core/qdev.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/core/qdev.c b/hw/core/qdev.c index 3769a2bccb..47bddacb4f 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -975,10 +975,13 @@ void object_apply_compat_props(Object *obj) if (object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) { MachineState *m = MACHINE(qdev_get_machine()); MachineClass *mc = MACHINE_GET_CLASS(m); - AccelClass *ac = ACCEL_GET_CLASS(m->accelerator); - if (ac->compat_props) { - object_apply_global_props(obj, ac->compat_props, &error_abort); + if (m->accelerator) { + AccelClass *ac = ACCEL_GET_CLASS(m->accelerator); + + if (ac->compat_props) { + object_apply_global_props(obj, ac->compat_props, &error_abort); + } } object_apply_global_props(obj, mc->compat_props, &error_abort); } |