https://bugzilla.kernel.org/show_bug.cgi?id=36222 Summary: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown Product: Virtualization Version: unspecified Kernel Version: 3.0.0-rc1 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm AssignedTo: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx ReportedBy: edwintorok@xxxxxxxxx Regression: Yes Created an attachment (id=60022) --> (https://bugzilla.kernel.org/attachment.cgi?id=60022) config-3.0.0-rc1 Host is 3.0.0-rc1, guest is 3.0.0-rc1. After shutting down the guest, KVM on the host uses 100% CPU. gdb shows for KVM: 6 Thread 0x7f00d1875700 (LWP 32105) 0x0000003e278ce2f7 in ioctl () at ../sysdeps/unix/syscall-template.S:82 5 Thread 0x7f00d1074700 (LWP 32106) 0x0000003e278ce2f7 in ioctl () at ../sysdeps/unix/syscall-template.S:82 4 Thread 0x7f00d0873700 (LWP 32107) 0x0000003e278ce2f7 in ioctl () at ../sysdeps/unix/syscall-template.S:82 3 Thread 0x7f00d0072700 (LWP 32108) 0x0000003e278ce2f7 in ioctl () at ../sysdeps/unix/syscall-template.S:82 2 Thread 0x7f00cf871700 (LWP 32109) 0x0000003e278ce2f7 in ioctl () at ../sysdeps/unix/syscall-template.S:82 * 1 Thread 0x7f00d1e95760 (LWP 32100) 0x0000003e278ceda3 in select () at ../sysdeps/unix/syscall-template.S:82 This seems to be a problem with the 3.0.0-rc1 guest, because if I boot 2.6.39 in the guest (still keeping same 3.0.0-rc1 running on the host), then shutdown completes normally, no 100% CPU usage loop. .config for KVM guest attached. KVM command-line (created by libvirt): /usr/bin/kvm -S -M pc-0.14 -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 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/debian-enc.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -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 -netdev tap,fd=18,id=hostnet0,vhost=on,vhostfd=19 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:52:de:54,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 Bisecting... -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- 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
