** Also affects: linux (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
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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:
Confirmed
Status in linux source package in Focal:
New
Status in linux source package in Groovy:
New
Bug description:
With QL41xxx and Ubuntu DNS server DNS failures are seen when 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:
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)
Inbox driver qede v8.37.0.20
Complete 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.
Similar issue is described in this article.
https://github.com/kubernetes/kubernetes/issues/95365
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 <mani...@marvell.com>
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 <mani...@marvell.com>
Signed-off-by: Sudarsana Kalluru <skall...@marvell.com>
Signed-off-by: Igor Russkikh <irussk...@marvell.com>
Link: https://lore.kernel.org/r/20201221145530.7771-1-mani...@marvell.com
Signed-off-by: Jakub Kicinski <k...@kernel.org>
Thanks,
Manish
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