[Expired for linux-signed-hwe-5.8 (Ubuntu) because there has been no
activity for 60 days.]
** Changed in: linux-signed-hwe-5.8 (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1933245
Title:
mlx5_core: Error cqe on cqn leads to hang
Status in linux-signed-hwe-5.8 package in Ubuntu:
Expired
Bug description:
This bug seems to be same as this one
https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.6/+bug/1887723
Same workaround - iommu=pt - seems to prevent the hang on our new
server. It is running for 5 days now without issues. Before it
crashed/hanged within a day.
NICs are
c1:00.1 Ethernet controller: Mellanox Technologies MT27800 Family [ConnectX-5]
Subsystem: Mellanox Technologies ConnectX®-5 EN network interface card
for OCP2.0, Type 1, with host management, 25GbE dual-port SFP28, PCIe3.0 x8, no
bracket Halogen free ; MCX542B-ACAN
Flags: bus master, fast devsel, latency 0, IRQ 338, NUMA node 0
Memory at 1801a000000 (64-bit, prefetchable) [size=32M]
Expansion ROM at c0000000 [disabled] [size=1M]
Capabilities: [60] Express Endpoint, MSI 00
Capabilities: [48] Vital Product Data
Capabilities: [9c] MSI-X: Enable+ Count=64 Masked-
Capabilities: [c0] Vendor Specific Information: Len=18 <?>
Capabilities: [40] Power Management version 3
Capabilities: [100] Advanced Error Reporting
Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
Capabilities: [180] Single Root I/O Virtualization (SR-IOV)
Capabilities: [230] Access Control Services
Kernel driver in use: mlx5_core
Kernel modules: mlx5_core
not sure if it is relevant but two NICs run in LACP bond with
following settings
parameters:
mode: 802.3ad
lacp-rate: fast
down-delay: 200
mii-monitor-interval: 100
transmit-hash-policy: layer3+4
I managed to capture vmcore and will try to disect it a bit when I
find some time (hopefully soon)
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-55-generic 5.8.0-55.62~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-55.62~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-55-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Jun 22 14:22:23 2021
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)
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