Bug 209877 - network interfaces missing after kernel upgrade to 5.9.1
Summary: network interfaces missing after kernel upgrade to 5.9.1
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Network (show other bugs)
Hardware: Intel Linux
: P1 blocking
Assignee: drivers_network@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-10-26 17:50 UTC by Georgios Eleftheriou
Modified: 2020-10-30 13:40 UTC (History)
0 users

See Also:
Kernel Version: 5.9.1
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
dmesg while running a 5.9.1 kernel (93.79 KB, text/plain)
2020-10-26 17:50 UTC, Georgios Eleftheriou 		Details
dmesg while running a 5.8.14 kernel (93.43 KB, text/plain)
2020-10-26 17:51 UTC, Georgios Eleftheriou 		Details
ip link output for 5.8.14 (1.26 KB, text/plain)
2020-10-26 17:54 UTC, Georgios Eleftheriou 		Details
ip link output for 5.9.1 (740 bytes, text/plain)
2020-10-26 17:55 UTC, Georgios Eleftheriou 		Details
lsmod on 5.9.1 (5.01 KB, text/plain)
2020-10-26 17:57 UTC, Georgios Eleftheriou 		Details
lspci (2.37 KB, text/plain)
2020-10-26 17:58 UTC, Georgios Eleftheriou 		Details
output of lspci -knn | grep -A2 Ether (885 bytes, text/plain)
2020-10-26 18:00 UTC, Georgios Eleftheriou 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Georgios Eleftheriou 2020-10-26 17:50:52 UTC 
Created attachment 293209 [details]
dmesg while running a 5.9.1 kernel

After the upgrade from linux-5.8.14 to linux-5.9.1 (archlinux) I experienced complete loss of 3 ethernet interfaces. Only the dedicated IPMI one seems to have survived. Downgrading back to 5.8.14 fixes the issue.
Comment 1 Georgios Eleftheriou 2020-10-26 17:51:46 UTC 
Created attachment 293211 [details]
dmesg while running a 5.8.14 kernel
Comment 2 Georgios Eleftheriou 2020-10-26 17:54:26 UTC 
Created attachment 293213 [details]
ip link output for 5.8.14
Comment 3 Georgios Eleftheriou 2020-10-26 17:55:31 UTC 
Created attachment 293215 [details]
ip link output for 5.9.1
Comment 4 Georgios Eleftheriou 2020-10-26 17:57:35 UTC 
Created attachment 293217 [details]
lsmod on 5.9.1
Comment 5 Georgios Eleftheriou 2020-10-26 17:58:33 UTC 
Created attachment 293219 [details]
lspci
Comment 6 Georgios Eleftheriou 2020-10-26 18:00:45 UTC 
Created attachment 293221 [details]
output of lspci -knn | grep -A2 Ether
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