[Qemu-devel] -machine xenfv,accel=kvm crashes

[Qemu-devel] -machine xenfv,accel=kvm crashes

[Markus Armbruster]

*Not* running under Xen.  Silly thing to do, but it shouldn't crash.

Backtrace:

#0  0x00007fffef38477c in hypercall_buffer_cache_lock ()
   from /lib64/libxenctrl.so.4.3
#1  0x00007fffef3848f1 in xc.hypercall_buffer_alloc_pages ()
   from /lib64/libxenctrl.so.4.3
#2  0x00007fffef384a61 in xc.hypercall_buffer_alloc ()
   from /lib64/libxenctrl.so.4.3
#3  0x00007fffef37ba54 in xc_hvm_set_mem_type () from /lib64/libxenctrl.so.4.3
#4  0x00005555556e2059 in platform_fixed_ioport_writeb (opaque=0x555557759980, 
    addr=0, val=0) at /work/armbru/qemu/hw/i386/xen/xen_platform.c:184
#5  0x00005555556e2130 in platform_fixed_ioport_reset (opaque=0x555557759980)
    at /work/armbru/qemu/hw/i386/xen/xen_platform.c:238
#6  0x00005555556e2518 in platform_reset (dev=0x555557759980)
    at /work/armbru/qemu/hw/i386/xen/xen_platform.c:417
#7  0x00005555557f8afe in device_reset (dev=0x555557759980)
    at /work/armbru/qemu/hw/core/qdev.c:1281
#8  0x00005555557f63bf in qdev_reset_one (dev=0x555557759980, opaque=0x0)
    at /work/armbru/qemu/hw/core/qdev.c:329
#9  0x00005555557f6fdc in qdev_walk_children (dev=0x555557759980, 
    pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555557f63a3 <qdev_reset_one>, 
    post_busfn=0x5555557f63c6 <qbus_reset_one>, opaque=0x0)
    at /work/armbru/qemu/hw/core/qdev.c:649
#10 0x00005555557f6ecf in qbus_walk_children (bus=0x5555565964d0, 
    pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555557f63a3 <qdev_reset_one>, 
    post_busfn=0x5555557f63c6 <qbus_reset_one>, opaque=0x0)
    at /work/armbru/qemu/hw/core/qdev.c:607
#11 0x00005555557f6fa0 in qdev_walk_children (dev=0x55555656d4a0, 
    pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555557f63a3 <qdev_reset_one>, 
    post_busfn=0x5555557f63c6 <qbus_reset_one>, opaque=0x0)
    at /work/armbru/qemu/hw/core/qdev.c:641
#12 0x00005555557f6ecf in qbus_walk_children (bus=0x555556423fa0, 
    pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555557f63a3 <qdev_reset_one>, 
    post_busfn=0x5555557f63c6 <qbus_reset_one>, opaque=0x0)
    at /work/armbru/qemu/hw/core/qdev.c:607
#13 0x00005555557f649b in qbus_reset_all (bus=0x555556423fa0)
    at /work/armbru/qemu/hw/core/qdev.c:350
#14 0x00005555557f64bd in qbus_reset_all_fn (opaque=0x555556423fa0)
    at /work/armbru/qemu/hw/core/qdev.c:356
#15 0x0000555555763794 in qemu_devices_reset () at /work/armbru/qemu/vl.c:1618
#16 0x0000555555763820 in qemu_system_reset (report=false)
    at /work/armbru/qemu/vl.c:1631
#17 0x000055555576b6ce in main (argc=3, argv=0x7fffffffe138, 
    envp=0x7fffffffe158) at /work/armbru/qemu/vl.c:4325

Re: [Qemu-devel] -machine xenfv,accel=kvm crashes

[Paolo Bonzini]

On 31/03/2015 11:20, Markus Armbruster wrote:
> *Not* running under Xen.  Silly thing to do, but it shouldn't crash.

xen_platform_initfn should fail if !xen_enabled().

Paolo