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** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: focal
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https://bugs.launchpad.net/bugs/1909062
Title:
Ubuntu kernel 5.x QL41xxx NIC (qede driver) Kubernetes internal DNS
failure
Status in linux package in Ubuntu:
Incomplete
Bug description:
Customer is reporting a problem with QL41xxx and Ubuntu internal DNS
server. The issue appeared when the customer updated to the latest
Ubuntu kernel 20.04.1 LTS version 5.4.0-52-generic. Issue was not
observed with 4.5 ubuntu-linux.
Problem Definition:
Product: PowerEdge R740xd
Serial: C7J90W2
Hostname: xkubmin1r12
OS Version: /etc/os-release shows Ubuntu 18.04.4 LTS, but Booted kernel is
the latest Ubuntu 20.04.1 LTS version 5.4.0-52-generic
NIC: 2 dual-port (4) QLogic Corp. FastLinQ QL41000 Series 10/25/40/50GbE
Controller [1077:8070] (rev 02)
Firmware: 15.15.11
Inbox driver qede v8.37.0.20
Completed Detailed Problem Description:
Anything that uses the internal Kubernetes DNS server fails. If an external
DNS server is used resolution works for non-Kubernetes IPs.
Customer is experiencing the same issue described in this article.
https://github.com/kubernetes/kubernetes/issues/95365
Customer Impact: Production site
The QLogic Nic 41262 is their main nic for all of their 14G environment
thousands of servers. Unclear how many of those hosts are Kubernetes, but the
point is they want the QL41000 to work since it is very prevalent in the entire
environment.
Below patch recently on upstream fixes this -
[Note that issue was introduced by driver's tunnel offload support which was
added in after 4.5 kernel]
commit 5d5647dad259bb416fd5d3d87012760386d97530
Author: Manish Chopra <[email protected]>
Date: Mon Dec 21 06:55:30 2020 -0800
qede: fix offload for IPIP tunnel packets
IPIP tunnels packets are unknown to device,
hence these packets are incorrectly parsed and
caused the packet corruption, so disable offlods
for such packets at run time.
Signed-off-by: Manish Chopra <[email protected]>
Signed-off-by: Sudarsana Kalluru <[email protected]>
Signed-off-by: Igor Russkikh <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Thanks,
Manish
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