[Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown

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https://bugzilla.kernel.org/show_bug.cgi?id=36222





--- Comment #4 from TÃrÃk Edwin <edwintorok@xxxxxxxxx>  2011-05-30 09:25:58 ---
(In reply to comment #1)
> - qemu monitor
>     (qemu) info registers
>     (qemu) x/40i $eip - 32

Hmm libvirt doesn't provide access to qemu monitor on purpose.
Run it manually like this:
/usr/bin/kvm -S -cpu
phenom,+wdt,+skinit,+osvw,+3dnowprefetch,+misalignsse,+sse4a,+abm,+cr8legacy,+extapic,+cmp_legacy,+lahf_lm,+rdtscp,+pdpe1gb,+popcnt,+cx16,+ht,+vme
-enable-nesting -enable-kvm -m 3072 -smp 5,sockets=5,cores=1,threads=1 -name
debian-enc -uuid 55782a0a-937c-fa7b-8db5-86876d151a08  -rtc base=utc -boot
order=c,menu=off -drive
file=/var/lib/libvirt/images/debian-enc.img,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device
virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0
-drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0   -usb -device
usb-tablet,id=input0  -vga cirrus -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -monitor stdio

(qemu) info registers
RAX=ffffffff81ca0ac0 RBX=ffff8800ba5a3d48 RCX=ffffffff81c9b020
RDX=0000000000000000
RSI=00000000000000ff RDI=00000000000000f0 RBP=ffff8800bf003f88
RSP=ffff8800bf003f88
R8 =0000000000000000 R9 =0000000000000001 R10=0000000000000001
R11=00000090ffffff90
R12=0000000000000004 R13=ffff8800ba5a3d6c R14=ffff8800ba5a3d00
R15=ffff8800bf00d1c0
RIP=ffffffff81023f75 RFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 ffffffff 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0000 0000000000000000 ffffffff 00000000
FS =0000 00007fc3a9d4b700 ffffffff 00000000
GS =0000 ffff8800bf000000 ffffffff 00000000
LDT=0000 0000000000000000 0000ffff 00000000
TR =0040 ffff8800bf00e640 00002087 00008b00 DPL=0 TSS64-busy
GDT=     ffff8800bf004000 0000007f
IDT=     ffffffff81dd5000 00000fff
CR0=8005003b CR2=00000000019093dc CR3=00000000bab17000 CR4=000006f0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=3800 [ST=7] FTW=80 MXCSR=00001f80
FPR0=8200000000000000 c01d FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00ff0000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=ffffffff00000000000000ff00000000 XMM03=ffffffff00000000000000ff00000000
XMM04=776f6e206c6c695700000000019039e0 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000

(qemu)  x/40i $eip - 32
0xffffffff81023f55:  leaveq 
0xffffffff81023f56:  retq   
0xffffffff81023f57:  nopw   0x0(%rax,%rax,1)
0xffffffff81023f60:  push   %rbp
0xffffffff81023f61:  mov    %rsp,%rbp
0xffffffff81023f64:  sti    
0xffffffff81023f65:  hlt    
0xffffffff81023f66:  leaveq 
0xffffffff81023f67:  retq   
0xffffffff81023f68:  nopl   0x0(%rax,%rax,1)
0xffffffff81023f70:  push   %rbp
0xffffffff81023f71:  mov    %rsp,%rbp
0xffffffff81023f74:  hlt    
0xffffffff81023f75:  leaveq 
0xffffffff81023f76:  retq   
0xffffffff81023f77:  nopw   0x0(%rax,%rax,1)
0xffffffff81023f80:  push   %rbp
0xffffffff81023f81:  mov    %rsp,%rbp
0xffffffff81023f84:  clts   
0xffffffff81023f86:  leaveq 
0xffffffff81023f87:  retq   
0xffffffff81023f88:  nopl   0x0(%rax,%rax,1)
0xffffffff81023f90:  push   %rbp
0xffffffff81023f91:  mov    %rsp,%rbp
0xffffffff81023f94:  mov    %cr0,%rax
0xffffffff81023f97:  leaveq 
0xffffffff81023f98:  retq   
0xffffffff81023f99:  nopl   0x0(%rax)
0xffffffff81023fa0:  push   %rbp
0xffffffff81023fa1:  mov    %rsp,%rbp
0xffffffff81023fa4:  mov    %rdi,%cr0
0xffffffff81023fa7:  leaveq 
0xffffffff81023fa8:  retq   
0xffffffff81023fa9:  nopl   0x0(%rax)
0xffffffff81023fb0:  push   %rbp
0xffffffff81023fb1:  mov    %rsp,%rbp
0xffffffff81023fb4:  mov    %cr2,%rax
0xffffffff81023fb7:  leaveq 
0xffffffff81023fb8:  retq   
0xffffffff81023fb9:  nopl   0x0(%rax)

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