| Summary: | RNG device which connected to pci-bridge didn't deleted when ran command "device_del rng0" | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | jingzhao <jinzhao> |
| Component: | qemu-kvm-rhev | Assignee: | Amit Shah <amit.shah> |
| Status: | CLOSED WONTFIX | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.3 | CC: | chayang, juzhang, knoel, pagupta, 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: | 2016-08-23 20:45:54 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: | |
This could be because the guest is using the rng device. RNG device hot unplug is not a case that's likely to be widespread in use, so I"ll just close this. This could be more serious if another device, like virtio-net, would be affected. |
Description of problem: RNG device which connected to pci-bridge didn't deleted when ran command "device_del rng0" Version-Release number of selected component (if applicable): host-kernel:3.10.0-492.el7.x86_64 qemu-kvm-rhev-2.6.0-20.el7.x86_64 How reproducible: 3/3 Steps to Reproduce: 1. Boot guest with rng device which connected to pci-bridge /usr/libexec/qemu-kvm \ -M pc \ -cpu SandyBridge \ -nodefaults -rtc base=utc \ -m 4G \ -smp 2,sockets=2,cores=1,threads=1 \ -enable-kvm \ -name rhel7.3 \ -uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \ -smbios type=1,manufacturer='Red Hat',product='RHEV Hypervisor',version=el6,serial=koTUXQrb,uuid=feebc8fd-f8b0-4e75-abc3-e63fcdb67170 \ -k en-us \ -nodefaults \ -serial unix:/tmp/serial0,server,nowait \ -boot menu=on \ -bios /usr/share/seabios/bios.bin \ -chardev file,path=/home/pci-bridge/seabios.log,id=seabios \ -device isa-debugcon,chardev=seabios,iobase=0x402 \ -qmp tcp:0:6666,server,nowait \ -device pci-bridge,bus=pci.0,id=bridge1,chassis_nr=1 \ -drive file=/home/pci-bridge/big.img,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,bootindex=1,bus=bridge1,addr=0x1 \ -device virtio-net-pci,netdev=tap10,mac=9a:6a:6b:6c:6d:6e,bus=bridge1,addr=0x2 -netdev tap,id=tap10 \ -device VGA,id=video,bus=bridge1,addr=0x3 \ -vnc :2 \ -device virtio-rng-pci,id=rng0,bus=bridge1,addr=0x4 \ -device pci-bridge,bus=pci.0,id=bridge9,chassis_nr=9 \ -monitor stdio \ 2. check the rng device in hmp (qemu) info pci Bus 0, device 0, function 0: Host bridge: PCI device 8086:1237 id "" Bus 0, device 1, function 0: ISA bridge: PCI device 8086:7000 id "" Bus 0, device 1, function 1: IDE controller: PCI device 8086:7010 BAR4: I/O at 0xe000 [0xe00f]. id "" Bus 0, device 1, function 3: Bridge: PCI device 8086:7113 IRQ 9. id "" Bus 0, device 2, function 0: PCI bridge: PCI device 1b36:0001 IRQ 10. BUS 0. secondary bus 1. subordinate bus 1. IO range [0xd000, 0xdfff] memory range [0xfe800000, 0xfe9fffff] prefetchable memory range [0xfb000000, 0xfdffffff] BAR0: 64 bit memory at 0xfea00000 [0xfea000ff]. id "bridge1" Bus 1, device 1, function 0: SCSI controller: PCI device 1af4:1001 IRQ 11. BAR0: I/O at 0xd000 [0xd03f]. BAR1: 32 bit memory at 0xfe850000 [0xfe850fff]. BAR4: 64 bit prefetchable memory at 0xfc000000 [0xfc7fffff]. id "virtio-disk0" Bus 1, device 2, function 0: Ethernet controller: PCI device 1af4:1000 IRQ 11. BAR0: I/O at 0xd040 [0xd05f]. BAR1: 32 bit memory at 0xfe851000 [0xfe851fff]. BAR4: 64 bit prefetchable memory at 0xfc800000 [0xfcffffff]. BAR6: 32 bit memory at 0xffffffffffffffff [0x0003fffe]. id "" Bus 1, device 3, function 0: VGA controller: PCI device 1234:1111 BAR0: 32 bit prefetchable memory at 0xfb000000 [0xfbffffff]. BAR2: 32 bit memory at 0xfe852000 [0xfe852fff]. BAR6: 32 bit memory at 0xffffffffffffffff [0x0000fffe]. id "video" Bus 1, device 4, function 0: Class 0255: PCI device 1af4:1005 IRQ 10. BAR0: I/O at 0xd060 [0xd07f]. BAR4: 64 bit prefetchable memory at 0xfd000000 [0xfd7fffff]. id "rng0" Bus 0, device 3, function 0: PCI bridge: PCI device 1b36:0001 IRQ 11. BUS 0. secondary bus 2. subordinate bus 2. IO range [0xc000, 0xcfff] memory range [0xfe600000, 0xfe7fffff] prefetchable memory range [0xfe000000, 0xfe1fffff] BAR0: 64 bit memory at 0xfea01000 [0xfea010ff]. id "bridge9" (qemu) info qtree bus: main-system-bus type System dev: kvm-ioapic, id "" gpio-in "" 24 gsi_base = 0 (0x0) mmio 00000000fec00000/0000000000001000 dev: i440FX-pcihost, id "" pci-hole64-size = 18446744073709551615 (16 EiB) short_root_bus = 0 (0x0) bus: pci.0 type PCI dev: pci-bridge, id "bridge9" chassis_nr = 9 (0x9) msi = true shpc = true addr = 03.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true class PCI bridge, addr 00:03.0, pci id 1b36:0001 (sub 0000:0000) bar 0: mem at 0xfea01000 [0xfea010ff] bus: bridge9 type PCI dev: pci-bridge, id "bridge1" chassis_nr = 1 (0x1) msi = true shpc = true addr = 02.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true class PCI bridge, addr 00:02.0, pci id 1b36:0001 (sub 0000:0000) bar 0: mem at 0xfea00000 [0xfea000ff] bus: bridge1 type PCI dev: virtio-rng-pci, id "rng0" virtio-pci-bus-master-bug-migration = false disable-legacy = "off" disable-modern = false migrate-extra = true modern-pio-notify = false x-disable-pcie = false addr = 04.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true class Class 00ff, addr 01:04.0, pci id 1af4:1005 (sub 1af4:0004) bar 0: i/o at 0xd060 [0xd07f] bar 4: mem at 0xfd000000 [0xfd7fffff] bus: virtio-bus type virtio-pci-bus dev: virtio-rng-device, id "" max-bytes = 9223372036854775807 (0x7fffffffffffffff) period = 65536 (0x10000) indirect_desc = true event_idx = true notify_on_empty = true any_layout = true 3. In guest, check the rng device [root@localhost ~]# lspci -vvv -t -[0000:00]-+-00.0 Intel Corporation 440FX - 82441FX PMC [Natoma] +-01.0 Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] +-01.1 Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] +-01.3 Intel Corporation 82371AB/EB/MB PIIX4 ACPI +-02.0-[01]--+-01.0 Red Hat, Inc Virtio block device | +-02.0 Red Hat, Inc Virtio network device | +-03.0 Device 1234:1111 | \-04.0 Red Hat, Inc Virtio RNG \-03.0-[02]-- 4. (qemu) device_del rng0 (qemu) info pci Bus 0, device 0, function 0: Host bridge: PCI device 8086:1237 id "" Bus 0, device 1, function 0: ISA bridge: PCI device 8086:7000 id "" Bus 0, device 1, function 1: IDE controller: PCI device 8086:7010 BAR4: I/O at 0xe000 [0xe00f]. id "" Bus 0, device 1, function 3: Bridge: PCI device 8086:7113 IRQ 9. id "" Bus 0, device 2, function 0: PCI bridge: PCI device 1b36:0001 IRQ 10. BUS 0. secondary bus 1. subordinate bus 1. IO range [0xd000, 0xdfff] memory range [0xfe800000, 0xfe9fffff] prefetchable memory range [0xfb000000, 0xfdffffff] BAR0: 64 bit memory at 0xfea00000 [0xfea000ff]. id "bridge1" Bus 1, device 1, function 0: SCSI controller: PCI device 1af4:1001 IRQ 11. BAR0: I/O at 0xd000 [0xd03f]. BAR1: 32 bit memory at 0xfe850000 [0xfe850fff]. BAR4: 64 bit prefetchable memory at 0xfc000000 [0xfc7fffff]. id "virtio-disk0" Bus 1, device 2, function 0: Ethernet controller: PCI device 1af4:1000 IRQ 11. BAR0: I/O at 0xd040 [0xd05f]. BAR1: 32 bit memory at 0xfe851000 [0xfe851fff]. BAR4: 64 bit prefetchable memory at 0xfc800000 [0xfcffffff]. BAR6: 32 bit memory at 0xffffffffffffffff [0x0003fffe]. id "" Bus 1, device 3, function 0: VGA controller: PCI device 1234:1111 BAR0: 32 bit prefetchable memory at 0xfb000000 [0xfbffffff]. BAR2: 32 bit memory at 0xfe852000 [0xfe852fff]. BAR6: 32 bit memory at 0xffffffffffffffff [0x0000fffe]. id "video" Bus 1, device 4, function 0: Class 0255: PCI device 1af4:1005 IRQ 10. BAR0: I/O at 0xd060 [0xd07f]. BAR4: 64 bit prefetchable memory at 0xfd000000 [0xfd7fffff]. id "rng0" In guest: [root@localhost ~]# lspci -vvv -t pcilib: Cannot open /sys/bus/pci/devices/0000:01:04.0/config lspci: Unable to read the standard configuration space header of device 0000:01:04.0 -[0000:00]-+-00.0 Intel Corporation 440FX - 82441FX PMC [Natoma] +-01.0 Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] +-01.1 Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] +-01.3 Intel Corporation 82371AB/EB/MB PIIX4 ACPI +-02.0-[01]--+-01.0 Red Hat, Inc Virtio block device | +-02.0 Red Hat, Inc Virtio network device | \-03.0 Device 1234:1111 \-03.0-[02]-- Actual results: RNG device didn't deleted, even if executed "device_del rng0"many times in hmp Guest didn't reboot after executed "device_del rng0" many times Expected results: RNG device didn't deleted and guest can be reboot successfully Additional info: