Bug 203769

Summary:	Regression: Valid network link no longer detected
Product:	Networking	Reporter:	Greg White (gwhite)
Component:	Other	Assignee:	Stephen Hemminger (stephen)
Status:	NEW ---
Severity:	normal	CC:	anthony.louis.eden, EmilianMedve, Ian.kumlien, kyle.d.pelton, linux, michael, Nicolas.Mailhot, yaneti
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	5.2.0-rc2	Subsystem:
Regression:	No	Bisected commit-id:

Description Greg White 2019-06-01 09:53:51 UTC

Commit 7dc2bccab0ee37ac28096b8fcdc390a679a15841 has broken wired networking on two of my machines.  Drivers e1000e, igb and r8169 all fail to detect link with this commit applied.  The drivers load and appear to initialize correctly, but no link is ever detected.

With this commit reverted, they work perfectly.

This is on a fully updated Arch.  Happy to provide any other information that is of use.

Comment 1 kyle.d.pelton 2019-06-05 21:10:32 UTC

I've also noticed this. 

The commit breaks systemd-networkd with the following error:

/usr/lib/systemd/systemd-networkd
Enumeration completed
ens2: Could not bring up interface: Invalid argument

I am running systemd v241

Comment 2 Yanko Kaneti 2019-06-09 01:40:16 UTC

I can confirm the same on Fedora rawhide.

Again a systemd-networkd setup. 
If I manually ip link set up   the device it comes up and works.

Comment 3 Nicolas Mailhot 2019-06-09 08:43:40 UTC

https://bugzilla.redhat.com/show_bug.cgi?id=1718192 has another breakage example, with e1000, alx and bond

Comment 4 Michael Marley 2019-06-16 23:57:05 UTC

This is actually a systemd bug: https://github.com/systemd/systemd/issues/12784

Fixed by https://github.com/systemd/systemd/commit/4eb086a38712ea98faf41e075b84555b11b54362 and https://github.com/systemd/systemd/commit/9f6e82e6eb3b6e73d66d00d1d6eee60691fb702f.

Comment 5 Stephen Hemminger 2019-07-09 15:26:26 UTC

*** Bug 204099 has been marked as a duplicate of this bug. ***

Comment 6 Ian Kumlien 2019-07-09 17:31:01 UTC

I don't know if this is only systemd:s fault - 5.1.16 works just fine with the same binaries.