Bug 690044

Created attachment 486962 [details]
guest dmesg

Description of problem:
RHEL4.9 guest has 10% probability kernel panic during boot, and 80% probability hang during boot.

Version-Release number of selected component (if applicable):
host:
# rpm -q qemu-kvm
qemu-kvm-0.12.1.2-2.150.el6.x86_64
# rpm -q kernel
2.6.32-120.el6.x86_64


How reproducible:
10% kernel panic
80% hang

Steps to Reproduce:
1. start guest with cmd:
qemu -name 'vm1' 
-chardev socket,id=human_monitor_MTkB,path=/tmp/monitor-humanmonitor1-20110319-152410-zRkw,server,nowait 
-mon chardev=human_monitor_MTkB,mode=readline 
-chardev socket,id=serial_Yxc0,path=/tmp/serial-20110319-152410-zRkw,server,nowait 
-device isa-serial,chardev=serial_Yxc0 -drive file='RHEL-4.9-64-virtio.raw',index=0,if=none,id=drive-ide0-0-0,media=disk,cache=writethrough,format=raw,aio=native 
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 
-device virtio-net-pci,netdev=idOpH6lL,mac=9a:f6:24:35:ce:19,id=ndev00idOpH6lL,bus=pci.0,addr=0x3 
-netdev tap,id=idOpH6lL,vhost=on,ifname='t0-152410-zRkw',script='qemu-ifup-switch',downscript='no' 
-m 4096 -smp 2,cores=1,threads=1,sockets=2 
-cpu cpu64-rhel6,vendor="RED HAT PROD",+sse2,+x2apic 
-spice port=8000,disable-ticketing -vga qxl -rtc base=utc,clock=host,driftfix=none 
-M rhel6.1.0 -boot order=cdn,once=c,menu=off   -usbdevice tablet -no-kvm-pit-reinjection -enable-kvm

2. guest hang (or kernel panic)

  
Actual results:
guest hang (or kernel panic)

Expected results:
guest runs well, no hang, no panic

Additional info:
guest call trace:

NMI Watchdog detected LOCKUP, CPU=0, registers:
CPU 0
Modules linked in: parport_pc lp parport autofs4 sunrpc ds yenta_socket pcmcia_core cpufreq_powersave loop joydev button battery ac uhci_hcd floppy virtio_blk virtio_net virtio_pci virtio_ring virtio dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod
Pid: 468, comm: kjournald Not tainted 2.6.9-100.ELsmp
RIP: 0010:[<ffffffff80110919>] <ffffffff80110919>{iret_label+0}
RSP: 0000:ffffffff804732d8  EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffffffff804e5de0 RCX: 00000000000001f6
RDX: 000000000000c000 RSI: 000000000000c000 RDI: 0000000000000001
RBP: ffffffff804e5f28 R08: 0000000000004e1f R09: 0000000000000000
R10: 0000010037dbc000 R11: ffffffff8027d272 R12: ffffffff804e5de0
R13: ffffffff804e5de0 R14: 0000000000000008 R15: 00000101190c5db0
FS:  0000002a95aad6e0(0000) GS:ffffffff80506900(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000002a958860ec CR3: 0000000000101000 CR4: 00000000000006e0
Process kjournald (pid: 468, threadinfo 000001011be3c000, task 0000010037dd9030)
Stack: ffffffff80110919 0000000000000010 0000000000000086 ffffffff804732d8
       0000000000000000 0000000000000000 0000000000000000 0000000000000000
       0000000000000000 0000000000000000
Call Trace:<ffffffff80110919>{iret_label+0}  <EOE> <ffffffff80110919>{iret_label+0}


Code: 48 cf 0f ba e2 03 73 1b fb 57 e8 62 43 20 00 5f 65 48 8b 0c
Kernel panic - not syncing: nmi watchdog
 Badness in panic at kernel/panic.c:121

Call Trace:<ffffffff8013881d>{panic+558} <ffffffff801118dc>{show_stack+241}
<ffffffff80111a06>{show_registers+277} <ffffffff80111d0d>{die_nmi+130}
<ffffffff8011de1b>{nmi_watchdog_tick+276} <ffffffff801125de>{default_do_nmi+116}
<ffffffff8011df05>{do_nmi+115} <ffffffff801111eb>{paranoid_exit+0}
<ffffffff8027d272>{__ide_dma_begin+0} <ffffffff80110919>{iret_label+0}
 <EOE> <ffffffff80110919>{iret_label+0}
Badness in i8042_panic_blink at drivers/input/serio/i8042.c:987

Call Trace:<ffffffff80249cf5>{i8042_panic_blink+239} <ffffffff801387cb>{panic+476}
<ffffffff801118dc>{show_stack+241} <ffffffff80111a06>{show_registers+277}
<ffffffff80111d0d>{die_nmi+130} <ffffffff8011de1b>{nmi_watchdog_tick+276}
<ffffffff801125de>{default_do_nmi+116} <ffffffff8011df05>{do_nmi+115}
<ffffffff801111eb>{paranoid_exit+0} <ffffffff8027d272>{__ide_dma_begin+0}
<ffffffff80110919>{iret_label+0}  <EOE> <ffffffff80110919>{iret_label+0}

Badness in i8042_panic_blink at drivers/input/serio/i8042.c:990

Call Trace:<ffffffff80249d87>{i8042_panic_blink+385} <ffffffff801387cb>{panic+476}
<ffffffff801118dc>{show_stack+241} <ffffffff80111a06>{show_registers+277}
<ffffffff80111d0d>{die_nmi+130} <ffffffff8011de1b>{nmi_watchdog_tick+276}
<ffffffff801125de>{default_do_nmi+116} <ffffffff8011df05>{do_nmi+115}
<ffffffff801111eb>{paranoid_exit+0} <ffffffff8027d272>{__ide_dma_begin+0}
<ffffffff80110919>{iret_label+0}  <EOE> <ffffffff80110919>{iret_label+0}

Badness in i8042_panic_blink at drivers/input/serio/i8042.c:992

Call Trace:<ffffffff80249dec>{i8042_panic_blink+486} <ffffffff801387cb>{panic+476}
<ffffffff801118dc>{show_stack+241} <ffffffff80111a06>{show_registers+277}
<ffffffff80111d0d>{die_nmi+130} <ffffffff8011de1b>{nmi_watchdog_tick+276}
<ffffffff801125de>{default_do_nmi+116} <ffffffff8011df05>{do_nmi+115}
<ffffffff801111eb>{paranoid_exit+0} <ffffffff8027d272>{__ide_dma_begin+0}
<ffffffff80110919>{iret_label+0}  <EOE> <ffffffff80110919>{iret_label+0}