https://bugzilla.kernel.org/show_bug.cgi?id=86161 Bug ID: 86161 Summary: PROBLEM: On KVM, Window 7 32bit guests sometimes run into blue screen(0x0000005c) during reboot Product: Virtualization Version: unspecified Kernel Version: 3.10.0 and newer Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: ngugc@xxxxxx Regression: No Created attachment 153371 --> https://bugzilla.kernel.org/attachment.cgi?id=153371&action=edit The blue screen snapshot When running Windows 7 32bit guests on qemu-kvm, sometimes the guests run into blue screen during reboot(Windows' reboot instead of qemu's). Blue screen stop code: 0x0000005c(0x0000010b,0x00000003,0x00000000,0x00000000) Once the error happens to a guest, use qemu 'system_reset' command to restart it, the error can be reproduced. Unfortunately, there is neither mini dump nor memory dump, only the above stop code. Kernel versions: I have tested 3.10.0, 3.10.32, 3.10.57, 3.14.21. All of them are affected. 3.9.11 and 3.8.13 are not affected. I guest the bug is introduced in 3.10.0, and exists in all 3.10 and newer versions. Guest OS: Currently only Windows 7 32bit is affected. Windows xp 32bit and Windows 7 64 bit are not affected. Host CPU: Intel(R) Xeon(R) CPU E5-2620 v2 Host OS: CentOS 6.5 Recreate steps: This error can not be recreated every reboot. With below scenario, it can be recreated within 30 minutes: * Prepare a Windows 7 32bit image as base image. Put below content into a batch file(like auto_restart.bat): shutdown /r /t 60 and put the batch file into the Windows startup folder, or anywhere so long as it will be called after system startup. This will make the Windows guests automatically restart after system startup in 60 seconds. * And create 30 child images as below: qemu-img create -f qcow2 -o backing_file=win7_base,size=20G inst1.img * Run all the guests: nohup /usr/bin/qemu-system-x86_64 -name inst1 -machine pc-i440fx-1.5,accel=kvm,usb=off -m 1024 -smp 1,sockets=1,cores=1,threads=1 -drive file=inst1.img,if=none,id=drive-ide0-0-0,format=qcow2,cache=writeback -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -vnc 0.0.0.0:6100 -vga qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=67108864 -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/inst1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device usb-tablet,id=input0 2>&1 > /tmp/inst.out & Remember to change the vnc port for each guest. * After 30 minutes, check all the guests with vnc client, you will find some of the guests have run into blue screen. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
