This bug has been copied from bug #608709 and has been proposed to be backported to 5.5 z-stream (EUS).
Hi AVI, I did the following test for this bug with kvm-83-164.el5_5.29: 1. For AMD host Tried 10 times, cannot reproduce it. (btw, I can reproduce this bug with kvm_83-221 easily) 2. For Intel host Tried 3 times, still cannot reproduce it. But hit the new problem, when I input reboot -fn in host, the following messages display: (qemu) exception 0 (0) rax ffff8801f52b0000 rbx 0000000000006fa0 rcx 0000000000001c00 rdx 0000000000000000 rsi ffff8800237d2000 rdi ffff8801f52b2000 rsp 0000000000000000 rbp ffff880028203c88 r8 ffff880024000000 r9 ffffffff8170dec8 r10 00000000ffffffff r11 0000000000000001 r12 0000000000010000 r13 0000000000010000 r14 0000000000000002 r15 ffff880236516420 rip 0000000000000000 rflags 00000000 cs 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) ds 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) es 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) ss 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) fs 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) gs 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) tr 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) ldt 0000 (00000000/00000000 p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0) gdt 0/0 idt 0/0 cr0 8005003b cr2 7fa8c0704000 cr3 0 cr4 b0 cr8 0 efer d01 code: --> 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff 00 f0 a5 fe 00 f0 87 e9 00 f0 53 ff 00 f0 53 ff 00 f0 53 ff Can you help to check this ? thanks steps: 1. start a kvm guest 2. run some jobs inside the guest. for example dd if=/dev/vda of=a.out bs=1M count=2048 3. reboot the host by "reboot -fn" cmd: /usr/libexec/qemu-kvm -m 8G -smp 4 -uuid `uuidgen` -monitor stdio -boot c -drive file=/dev/vgtest/r6.0-64.raw,if=ide,bus=0,unit=0,boot=on,format=raw,cache=none -net nic,macaddr=00:22:00:73:b5:26,model=virtio,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -usb -vnc :1 -soundhw ac97
The second problem (qemu crashes) are expected. Since the host is rebooting, it isn't a problem anyway. Please clarify the status wrt: AMD 5.5.z Intel 5.5.z AMD 5.6 Intel 5.6 Do we have a regression on AMD? So many cases, I got confused.
Hi Avi, The following are my testing result: 5.5.z(kvm-83-164.el5_5.29) | 5.6(kvm-83-221.el5) ---------------------------------------------------------- AMD reproduced | reproduced ---------------------------------------------------------- Intel passed(tested 10 times) | passed(tested 10 times) ---------------------------------------------------------- Attached serial log for 5.5.z(kvm-83-164.el5_5.29).
Created attachment 468791 [details] serial log for 5.5.z
steps: 1. start a kvm guest 2. run 'stress' inside the guest 3. reboot the host by "reboot -fn" cmd: /usr/libexec/qemu-kvm -m 8G -smp 8 -uuid `uuidgen` -monitor stdio -boot c -drive file=/dev/vgtest/r6.0-64.raw,if=ide,bus=0,unit=0,boot=on,format=raw,cache=none -net nic,macaddr=00:22:00:73:b5:26,model=virtio,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -usb -vnc :1 -soundhw ac97