[Qemu-devel] weird qdev error

[Michael S. Tsirkin]

I got this assert when working on qemu: pci hotplug
callback failed so qdev_free was called.

(gdb) where
#0  0x00007ffff5fa1905 in raise () from /lib64/libc.so.6
#1  0x00007ffff5fa30e5 in abort () from /lib64/libc.so.6
#2  0x00007ffff7413a7f in g_assertion_message () from
/lib64/libglib-2.0.so.0
#3  0x00007ffff7414020 in g_assertion_message_expr () from
/lib64/libglib-2.0.so.0
#4  0x00007ffff7e452a9 in object_delete (obj=0x7ffff9124e60) at
qom/object.c:375
#5  0x00007ffff7e2f5d4 in qdev_free (dev=0x7ffff9124e60)
    at /home/mst/scm/qemu/hw/qdev.c:250
#6  qdev_init (dev=0x7ffff9124e60) at /home/mst/scm/qemu/hw/qdev.c:149
#7  0x00007ffff7e2a7fe in qdev_device_add (opts=0x7ffff8b0d3a0)
    at /home/mst/scm/qemu/hw/qdev-monitor.c:473
#8  0x00007ffff7e06da9 in device_init_func (opts=<value optimized out>, 
    opaque=<value optimized out>) at /home/mst/scm/qemu/vl.c:1754
#9  0x00007ffff7e3737a in qemu_opts_foreach (list=<value optimized out>,
func=
    0x7ffff7e06d90 <device_init_func>, opaque=0x0, 
    abort_on_failure=<value optimized out>) at qemu-option.c:1048
#10 0x00007ffff7e09cdb in main (argc=<value optimized out>, argv=<value
optimized out>, 
    envp=<value optimized out>) at /home/mst/scm/qemu/vl.c:3407
(gdb) frame 6
#6  qdev_init (dev=0x7ffff9124e60) at /home/mst/scm/qemu/hw/qdev.c:149
149             qdev_free(dev);

The problems seems to be that
pci_qdev_init calls do_pci_unregister_device on
hotplug  error which will free the device twice?

-- 
MST