Bug 1449143
| Summary: | [Q35] qemu core dump when hotplug/unplug virtio scsi disk after stop& cont VM | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | jingzhao <jinzhao> |
| Component: | qemu-kvm-rhev | Assignee: | Fam Zheng <famz> |
| Status: | CLOSED DUPLICATE | QA Contact: | jingzhao <jinzhao> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.4 | CC: | chayang, jinchen, jinzhao, juzhang, knoel, pbonzini, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-06-14 07:47:47 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
/usr/libexec/qemu-kvm \ -machine q35,smm=on,accel=kvm \ -cpu Haswell-noTSX \ -nodefaults -rtc base=utc \ -m 2G \ -smp 2,sockets=2,cores=1,threads=1 \ -enable-kvm \ -uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \ -k en-us \ -nodefaults \ -serial unix:/tmp/console,server,nowait \ -boot menu=on \ -qmp tcp:0:6666,server,nowait \ -vga qxl \ -chardev file,path=/home/seabios.log,id=seabios -device isa-debugcon,chardev=seabios,iobase=0x402 \ -device pcie-root-port,bus=pcie.0,id=root3 \ -drive file=/home/test/win/win7/win7.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,werror=stop,rerror=stop \ -device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk0,bus=root3,bootindex=0 \ -device pcie-root-port,bus=pcie.0,id=root0,multifunction=on,chassis=1,addr=0xa.0 \ -device virtio-net-pci,netdev=tap10,mac=9a:6a:6b:6c:6d:6e,bus=root0 -netdev tap,id=tap10 \ -device pcie-root-port,bus=pcie.0,id=root1,multifunction=on,chassis=2,addr=0xa.1 \ -device pcie-root-port,bus=pcie.0,id=root2,slot=2 \ -cdrom /home/test/win/win7/en_windows_7_ultimate_with_sp1_x64_dvd_u_677332.iso \ -device ahci,id=ahci0 \ -drive file=/usr/share/virtio-win/virtio-win-1.9.0.iso,if=none,id=drive-virtio-disk1,format=raw \ -device ide-cd,drive=drive-virtio-disk1,id=virtio-disk1,bus=ahci0.0 \ -monitor stdio \ -vnc :0 \ BTW: didn't hit the issue on rhel7.4 guest (tried 2 times) Thanks Jing |
Description of problem: qemu core dump when hotplug/unplug virtio scsi disk after stop& cont VM Version-Release number of selected component (if applicable): kernel-3.10.0-663.el7.x86_64 qemu-kvm-rhev-2.9.0-3.el7.x86_64 guest: win7 How reproducible: 2/2 Steps to Reproduce: 1.Boot guest with qemu command line [1] 2.stop and continue VM through hmp (qemu) stop (qemu) info status VM status: paused (qemu) cont (qemu) info status VM status: running 3.Hot-plug virtio scsi disk through qmp {"execute":"__com.redhat_drive_add", "arguments": {"file":"/home/test/rhel/block1.qcow2","format":"qcow2","id":"drive_datadisk0"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"virtio-scsi-pci","id":"scsi1","bus":"root2"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"scsi-hd","drive":"drive_datadisk0","id":"device_datadisk0","bus":"scsi1.0"}} {"return": {}} {"execute":"__com.redhat_drive_add", "arguments": {"file":"/home/test/rhel/block2.qcow2","format":"qcow2","id":"drive_datadisk1"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"virtio-scsi-pci","id":"scsi2","bus":"root1"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"scsi-hd","drive":"drive_datadisk1","id":"device_datadisk1","bus":"scsi2.0"}} 4.Stop and continue VM after hotplug disk (qemu) info block drive-virtio-disk0 (#block108): /home/test/win/win7/win7.qcow2 (qcow2) Cache mode: writeback, direct ide1-cd0 (#block334): /home/test/win/win7/en_windows_7_ultimate_with_sp1_x64_dvd_u_677332.iso (raw, read-only) Removable device: not locked, tray closed Cache mode: writeback drive-virtio-disk1 (#block526): /usr/share/virtio-win/virtio-win-1.9.0.iso (raw) Removable device: not locked, tray closed Cache mode: writeback drive_datadisk0 (#block705): /home/test/rhel/block1.qcow2 (qcow2) Cache mode: writeback drive_datadisk1 (#block983): /home/test/rhel/block2.qcow2 (qcow2) Cache mode: writeback (qemu) stop (qemu) info status VM status: paused (qemu) cont (qemu) info status VM status: running 5.Then unplug virtio scsi disk and virtio scsi controller (qemu) device_del device_datadisk1 (qemu) device_del device_datadisk0 (qemu) device_del scsi1 (qemu) device_del scsi2 6. Then "system_reset" in hmp Actual results: qemu core dump after step 6 (gdb) bt #0 0x000055efeca8c4e0 in address_space_io () #1 0x000055efec203d0c in memory_region_transaction_commit () at /usr/src/debug/qemu-2.9.0/memory.c:919 #2 0x000055efec3758b6 in pci_update_mappings (d=0x55eff0575000) at hw/pci/pci.c:1292 #3 0x000055efec375a4e in pci_do_device_reset (dev=0x55eff0575000) at hw/pci/pci.c:278 #4 0x000055efec375b12 in pcibus_reset (qbus=0x55efeeb36000) at hw/pci/pci.c:306 #5 0x000055efec31a669 in qbus_reset_one (bus=0x55efeeb36000, opaque=<optimized out>) at hw/core/qdev.c:319 #6 0x000055efec31b868 in qdev_walk_children (dev=0x55efeead2000, pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x55efec31bef0 <qdev_reset_one>, post_busfn=0x55efec31a630 <qbus_reset_one>, opaque=0x0) at hw/core/qdev.c:617 #7 0x000055efec31ecf8 in qbus_walk_children (bus=0x55efee36c310, pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x55efec31bef0 <qdev_reset_one>, post_busfn=0x55efec31a630 <qbus_reset_one>, opaque=0x0) at hw/core/bus.c:59 #8 0x000055efec31ee8d in qemu_devices_reset () at hw/core/reset.c:69 #9 0x000055efec24be96 in pc_machine_reset () at /usr/src/debug/qemu-2.9.0/hw/i386/pc.c:2236 #10 0x000055efec2cccd6 in qemu_system_reset (report=report@entry=true) at vl.c:1697 #11 0x000055efec1b0305 in main () at vl.c:1865 #12 0x000055efec1b0305 in main () at vl.c:1902 #13 0x000055efec1b0305 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4720 Expected results scsi controller and scsi disk unplug successfully and no core dump Additional info: