[QUESTION]stuck in SeaBIOS and vm can not be reset any more

[Xulei (Stone)]

Hi, all:
Recently when i try to reset a vm, I find it may be stuck in SeaBIOS.
I use a shell script to continuously reset a vm to see what may happen.

#!/bin/bash
while((1))
do
virsh reset VMNAME
sleep 1
done

After one day, the vm is stuck. Looking from the following seabios log,
it seems seabios stops at "PCI: Using 00:02.0 for primary VGA", and can
not execute handle_smp() any more.
What may be the reason?

============My SeaBIOS log============
2016-07-26 14:58:49PCI: Using 00:02.0 for primary VGA
2016-07-26 14:58:51In resume (status=0)
2016-07-26 14:58:51In 32bit resume
2016-07-26 14:58:51Attempting a hard reboot
2016-07-26 14:58:51SeaBIOS (version rel-1.9.1-0-gb3ef39f-20160720_133625-HGH1000003484)
2016-07-26 14:58:51BUILD: gcc: (GCC) 4.8.3 20140911 (EulerOS 4.8.3-10) binutils: version 2.23.52.0.1-55 20130226
2016-07-26 14:58:51No Xen hypervisor found.
2016-07-26 14:58:51Running on QEMU (i440fx)
2016-07-26 14:58:51Running on KVM
2016-07-26 14:58:51RamSize: 0xc0000000 [cmos]
2016-07-26 14:58:51Relocating init from 0x000dc320 to 0xbffad7e0 (size 75664)
2016-07-26 14:58:51Found QEMU fw_cfg
2016-07-26 14:58:51QEMU fw_cfg DMA interface supported
2016-07-26 14:58:51RamBlock: addr 0x0000000000000000 len 0x00000000c0000000 [e820]
2016-07-26 14:58:51RamBlock: addr 0x0000000100000000 len 0x0000000040000000 [e820]
2016-07-26 14:58:51Moving pm_base to 0x600
2016-07-26 14:58:51boot order:
2016-07-26 14:58:511: /pci@i0cf8/scsi@4/channel@0/disk@0,0
2016-07-26 14:58:512: HALT
2016-07-26 14:58:51=== PCI bus & bridge init ===
2016-07-26 14:58:51PCI: pci_bios_init_bus_rec bus = 0x0
2016-07-26 14:58:51=== PCI device probing ===
2016-07-26 14:58:51Found 10 PCI devices (max PCI bus is 00)
2016-07-26 14:58:51=== PCI new allocation pass #1 ===
2016-07-26 14:58:51PCI: check devices
2016-07-26 14:58:51=== PCI new allocation pass #2 ===
2016-07-26 14:58:51PCI: IO: c000 - c1af
2016-07-26 14:58:51PCI: 32: 00000000c0000000 - 00000000fec00000
2016-07-26 14:58:51PCI: map device bdf=00:1f.0  bar 0, addr 0000c000, size 00000100 [io]
2016-07-26 14:58:51PCI: map device bdf=00:04.0  bar 0, addr 0000c100, size 00000040 [io]
2016-07-26 14:58:51PCI: map device bdf=00:01.2  bar 4, addr 0000c140, size 00000020 [io]
2016-07-26 14:58:51PCI: map device bdf=00:03.0  bar 0, addr 0000c160, size 00000020 [io]
2016-07-26 14:58:51PCI: map device bdf=00:05.0  bar 0, addr 0000c180, size 00000020 [io]
2016-07-26 14:58:51PCI: map device bdf=00:01.1  bar 4, addr 0000c1a0, size 00000010 [io]
2016-07-26 14:58:51PCI: map device bdf=00:03.0  bar 6, addr feb80000, size 00040000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:02.0  bar 6, addr febc0000, size 00010000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:02.0  bar 1, addr febd0000, size 00001000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:03.0  bar 1, addr febd1000, size 00001000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:04.0  bar 1, addr febd2000, size 00001000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:05.0  bar 1, addr febd3000, size 00001000 [mem]
2016-07-26 14:58:51PCI: map device bdf=00:02.0  bar 0, addr fc000000, size 02000000 [prefmem]
2016-07-26 14:58:51PCI: init bdf=00:00.0 id=8086:1237
2016-07-26 14:58:51PCI: init bdf=00:01.0 id=8086:7000
2016-07-26 14:58:51PIIX3/PIIX4 init: elcr=00 0c
2016-07-26 14:58:51PCI: init bdf=00:01.1 id=8086:7010
2016-07-26 14:58:51PCI: init bdf=00:01.2 id=8086:7020
2016-07-26 14:58:51PCI: init bdf=00:01.3 id=8086:7113
2016-07-26 14:58:51Using pmtimer, ioport 0x608
2016-07-26 14:58:51PCI: init bdf=00:02.0 id=1013:00b8
2016-07-26 14:58:51PCI: init bdf=00:03.0 id=1af4:1000
2016-07-26 14:58:51PCI: init bdf=00:04.0 id=1af4:1004
2016-07-26 14:58:51PCI: init bdf=00:05.0 id=1af4:1003
2016-07-26 14:58:51PCI: init bdf=00:1f.0 id=1af4:8888
2016-07-26 14:58:51PCI: Using 00:02.0 for primary VGA          <---------- stuck here
2016-07-26 14:58:52In resume (status=0)
2016-07-26 14:58:52In 32bit resume
2016-07-26 14:58:53Attempting a hard reboot
2016-07-26 14:58:53SeaBIOS (version rel-1.9.1-0-gb3ef39f-20160720_133625-HGH1000003484)
2016-07-26 14:58:53BUILD: gcc: (GCC) 4.8.3 20140911 (EulerOS 4.8.3-10) binutils: version 2.23.52.0.1-55 20130226
2016-07-26 14:58:53No Xen hypervisor found.
2016-07-26 14:58:53Running on QEMU (i440fx)
2016-07-26 14:58:53Running on KVM
2016-07-26 14:58:53RamSize: 0xc0000000 [cmos]
2016-07-26 14:58:53Relocating init from 0x000dc320 to 0xbffad7e0 (size 75664)
2016-07-26 14:58:53Found QEMU fw_cfg
2016-07-26 14:58:53QEMU fw_cfg DMA interface supported
2016-07-26 14:58:53RamBlock: addr 0x0000000000000000 len 0x00000000c0000000 [e820]
2016-07-26 14:58:53RamBlock: addr 0x0000000100000000 len 0x0000000040000000 [e820]
2016-07-26 14:58:53Moving pm_base to 0x600
2016-07-26 14:58:53boot order:
2016-07-26 14:58:531: /pci@i0cf8/scsi@4/channel@0/disk@0,0
2016-07-26 14:58:532: HALT
2016-07-26 14:58:53=== PCI bus & bridge init ===
2016-07-26 14:58:53PCI: pci_bios_init_bus_rec bus = 0x0
2016-07-26 14:58:53=== PCI device probing ===
2016-07-26 14:58:53Found 10 PCI devices (max PCI bus is 00)
2016-07-26 14:58:53=== PCI new allocation pass #1 ===
2016-07-26 14:58:53PCI: check devices
2016-07-26 14:58:53=== PCI new allocation pass #2 ===
2016-07-26 14:58:53PCI: IO: c000 - c1af
2016-07-26 14:58:53PCI: 32: 00000000c0000000 - 00000000fec00000
2016-07-26 14:58:53PCI: map device bdf=00:1f.0  bar 0, addr 0000c000, size 00000100 [io]
2016-07-26 14:58:53PCI: map device bdf=00:04.0  bar 0, addr 0000c100, size 00000040 [io]
2016-07-26 14:58:53PCI: map device bdf=00:01.2  bar 4, addr 0000c140, size 00000020 [io]
2016-07-26 14:58:53PCI: map device bdf=00:03.0  bar 0, addr 0000c160, size 00000020 [io]
2016-07-26 14:58:53PCI: map device bdf=00:05.0  bar 0, addr 0000c180, size 00000020 [io]
2016-07-26 14:58:53PCI: map device bdf=00:01.1  bar 4, addr 0000c1a0, size 00000010 [io]
2016-07-26 14:58:53PCI: map device bdf=00:03.0  bar 6, addr feb80000, size 00040000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:02.0  bar 6, addr febc0000, size 00010000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:02.0  bar 1, addr febd0000, size 00001000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:03.0  bar 1, addr febd1000, size 00001000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:04.0  bar 1, addr febd2000, size 00001000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:05.0  bar 1, addr febd3000, size 00001000 [mem]
2016-07-26 14:58:53PCI: map device bdf=00:02.0  bar 0, addr fc000000, size 02000000 [prefmem]
2016-07-26 14:58:53PCI: init bdf=00:00.0 id=8086:1237
2016-07-26 14:58:53PCI: init bdf=00:01.0 id=8086:7000
2016-07-26 14:58:53PIIX3/PIIX4 init: elcr=00 0c
2016-07-26 14:58:53PCI: init bdf=00:01.1 id=8086:7010
2016-07-26 14:58:53PCI: init bdf=00:01.2 id=8086:7020
2016-07-26 14:58:53PCI: init bdf=00:01.3 id=8086:7113
2016-07-26 14:58:53Using pmtimer, ioport 0x608
2016-07-26 14:58:53PCI: init bdf=00:02.0 id=1013:00b8
2016-07-26 14:58:53PCI: init bdf=00:03.0 id=1af4:1000
2016-07-26 14:58:53PCI: init bdf=00:04.0 id=1af4:1004
2016-07-26 14:58:53PCI: init bdf=00:05.0 id=1af4:1003
2016-07-26 14:58:53PCI: init bdf=00:1f.0 id=1af4:8888
2016-07-26 14:58:53PCI: Using 00:02.0 for primary VGA       <---- i wait here for 3 days, seabios can not go on
2016-07-29 11:33:56In resume (status=0)
2016-07-29 11:33:56In 32bit resume
2016-07-29 11:33:56Attempting a hard reboot
2016-07-29 11:33:56SeaBIOS (version rel-1.9.1-0-gb3ef39f-20160720_133625-HGH1000003484)
2016-07-29 11:33:56BUILD: gcc: (GCC) 4.8.3 20140911 (EulerOS 4.8.3-10) binutils: version 2.23.52.0.1-55 20130226
2016-07-29 11:33:56No Xen hypervisor found.
2016-07-29 11:33:56Running on QEMU (i440fx)
2016-07-29 11:33:56Running on KVM
2016-07-29 11:33:56RamSize: 0xc0000000 [cmos]
2016-07-29 11:33:56Relocating init from 0x000dc320 to 0xbffad7e0 (size 75664)
2016-07-29 11:33:56Found QEMU fw_cfg
2016-07-29 11:33:56QEMU fw_cfg DMA interface supported
2016-07-29 11:33:56RamBlock: addr 0x0000000000000000 len 0x00000000c0000000 [e820]
2016-07-29 11:33:56RamBlock: addr 0x0000000100000000 len 0x0000000040000000 [e820]
2016-07-29 11:33:56Moving pm_base to 0x600
2016-07-29 11:33:56boot order:
2016-07-29 11:33:561: /pci@i0cf8/scsi@4/channel@0/disk@0,0
2016-07-29 11:33:562: HALT
2016-07-29 11:33:56=== PCI bus & bridge init ===
2016-07-29 11:33:56PCI: pci_bios_init_bus_rec bus = 0x0
2016-07-29 11:33:56=== PCI device probing ===
2016-07-29 11:33:56Found 10 PCI devices (max PCI bus is 00)
2016-07-29 11:33:56=== PCI new allocation pass #1 ===
2016-07-29 11:33:56PCI: check devices
2016-07-29 11:33:56=== PCI new allocation pass #2 ===
2016-07-29 11:33:56PCI: IO: c000 - c1af
2016-07-29 11:33:56PCI: 32: 00000000c0000000 - 00000000fec00000
2016-07-29 11:33:56PCI: map device bdf=00:1f.0  bar 0, addr 0000c000, size 00000100 [io]
2016-07-29 11:33:56PCI: map device bdf=00:04.0  bar 0, addr 0000c100, size 00000040 [io]
2016-07-29 11:33:56PCI: map device bdf=00:01.2  bar 4, addr 0000c140, size 00000020 [io]
2016-07-29 11:33:56PCI: map device bdf=00:03.0  bar 0, addr 0000c160, size 00000020 [io]
2016-07-29 11:33:56PCI: map device bdf=00:05.0  bar 0, addr 0000c180, size 00000020 [io]
2016-07-29 11:33:56PCI: map device bdf=00:01.1  bar 4, addr 0000c1a0, size 00000010 [io]
2016-07-29 11:33:56PCI: map device bdf=00:03.0  bar 6, addr feb80000, size 00040000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:02.0  bar 6, addr febc0000, size 00010000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:02.0  bar 1, addr febd0000, size 00001000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:03.0  bar 1, addr febd1000, size 00001000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:04.0  bar 1, addr febd2000, size 00001000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:05.0  bar 1, addr febd3000, size 00001000 [mem]
2016-07-29 11:33:56PCI: map device bdf=00:02.0  bar 0, addr fc000000, size 02000000 [prefmem]
2016-07-29 11:33:56PCI: init bdf=00:00.0 id=8086:1237
2016-07-29 11:33:56PCI: init bdf=00:01.0 id=8086:7000
2016-07-29 11:33:56PIIX3/PIIX4 init: elcr=00 0c
2016-07-29 11:33:56PCI: init bdf=00:01.1 id=8086:7010
2016-07-29 11:33:56PCI: init bdf=00:01.2 id=8086:7020
2016-07-29 11:33:56PCI: init bdf=00:01.3 id=8086:7113
2016-07-29 11:33:56Using pmtimer, ioport 0x608
2016-07-29 11:33:56PCI: init bdf=00:02.0 id=1013:00b8
2016-07-29 11:33:56PCI: init bdf=00:03.0 id=1af4:1000
2016-07-29 11:33:56PCI: init bdf=00:04.0 id=1af4:1004
2016-07-29 11:33:56PCI: init bdf=00:05.0 id=1af4:1003
2016-07-29 11:33:56PCI: init bdf=00:1f.0 id=1af4:8888
2016-07-29 11:33:56PCI: Using 00:02.0 for primary VGA

--------------
Xulei (Stone)