Bug 1455017
| Summary: | LnkCap speed='(null)' in the nodedev-dumpxml of wireless NIC | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jingjing Shao <jishao> |
| Component: | libvirt | Assignee: | Laine Stump <laine> |
| Status: | CLOSED ERRATA | QA Contact: | Jingjing Shao <jishao> |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.4 | CC: | dyuan, hannsj_uhl, laine, lhuang, mzhan, rbalakri, xuzhang, yalzhang |
| Target Milestone: | rc | Keywords: | Patch, Regression |
| Target Release: | 7.4 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-3.2.0-7.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-02 01:34:35 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: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1442831 | ||
I expected something like this would happen when I saw the patch below pushed upstream:
commit 1128769f9ee50bb250333a5a5d276afbe74711ea
Author: Marek Marczykowski-Górecki <marmarek>
Date: Tue May 16 15:19:19 2017 +0200
pci: fix link maximum speed detection
Commit 8e09663 "pci: recognize/report GEN4 (PCIe 4.0) card 16GT/s Link
speed" introduced another speed into enum, but mistakenly also altered
field width, so one bit of link width was included there.
So it's fixed upstream already. I'll backport that to the RHEL build momentarily.
Verify this bug as below.
# rpm -q libvirt
libvirt-3.2.0-7.el7.x86_64
1. # virsh nodedev-list --tree
computer
+- pci_0000_00_1c_1
| |
| +- pci_0000_04_00_0
| |
| +- net_wlp4s0_5a_86_10_8c_c7_2c
2. # virsh nodedev-dumpxml pci_0000_04_00_0
<device>
<name>pci_0000_04_00_0</name>
<path>/sys/devices/pci0000:00/0000:00:1c.1/0000:04:00.0</path>
<parent>pci_0000_00_1c_1</parent>
<driver>
<name>iwlwifi</name>
</driver>
<capability type='pci'>
<domain>0</domain>
<bus>4</bus>
<slot>0</slot>
<function>0</function>
<product id='0x095b'>Wireless 7265</product>
<vendor id='0x8086'>Intel Corporation</vendor>
<iommuGroup number='11'>
<address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
</iommuGroup>
<pci-express>
<link validity='cap' port='0' speed='2.5' width='1'/>
<link validity='sta' speed='2.5' width='1'/>
</pci-express>
</capability>
</device>
3. # virsh nodedev-detach pci_0000_04_00_0
Device pci_0000_04_00_0 detached
4. # virsh nodedev-reattach pci_0000_04_00_0
Device pci_0000_04_00_0 re-attached
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:1846 |
Description of problem: LnkCap speed='(null)' in the nodedev-dumpxml of wireless NIC Version-Release number of selected component (if applicable): libvirt-3.2.0-5.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. # virsh nodedev-list --tree computer +- pci_0000_00_1c_1 | | | +- pci_0000_04_00_0 | | | +- net_wlp4s0_5a_86_10_8c_c7_2c 2.# lspci 04:00.0 Network controller: Intel Corporation Wireless 7265 (rev 99) ...... Capabilities: [40] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L1, Exit Latency L0s <4us, L1 <32us ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+ LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE# DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR+, OBFF Disabled LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- ..... 3.# virsh nodedev-dumpxml pci_0000_04_00_0 <device> <name>pci_0000_04_00_0</name> <path>/sys/devices/pci0000:00/0000:00:1c.1/0000:04:00.0</path> <parent>pci_0000_00_1c_1</parent> <driver> <name>iwlwifi</name> </driver> <capability type='pci'> <domain>0</domain> <bus>4</bus> <slot>0</slot> <function>0</function> <product id='0x095b'>Wireless 7265</product> <vendor id='0x8086'>Intel Corporation</vendor> <pci-express> <link validity='cap' port='0' speed='(null)' width='1'/> <link validity='sta' speed='2.5' width='1'/> </pci-express> </capability> </device> 4. # virsh nodedev-detach pci_0000_04_00_0 error: Failed to detach device pci_0000_04_00_0 error: malformed 'speed' attribute: (null) Actual results: speed='(null)' and make the detachment failed Expected results: speed='2.5' and device can be detached successfully Additional info: Try on the 7.3 version libvirt-2.0.0-10, it is all right . the speed='2.5' and device can be detached successfully