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Bug#1043544: qemu kvm rtl8139 interface breaks with linux-image-5.10.0-24-amd64

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  Bug#1043544: qemu kvm rtl8139 interface breaks with linux-image-5.10.0-24-amd64 Jamin Hoggard <jaminhoggard@gmail.com> - 2023-08-12 19:50 +0200
    Bug#1043544: marked as done (qemu kvm rtl8139 interface breaks  with linux-image-5.10.0-24-amd64) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-02-20 15:40 +0100

#80024 — Bug#1043544: qemu kvm rtl8139 interface breaks with linux-image-5.10.0-24-amd64

Package: linux-image-amd64
Version: linux-image-5.10.0-24-amd64

Upon updating a server hosting qemu-system-x86_64 / kvm virtual
machines (VMs) from linux-image-5.10.0-23-amd64 to
linux-image-5.10.0-24-amd64 and rebooting, all VM OSes saw the rtl8139
network interface as unplugged (and the network link down).  Trying to
change the interface state via the QEMU monitor command "set_link
<netid> off" then "set_link <netid> on" runs, but the VM OS still sees
the interface as unplugged.  Rebooting the host OS or VMs had no
effect.

The rtl8139 interfaces for the VMs work fine booting using earlier
kernel versions.

Server info:
CPU: AMD EPYC 7282 16-Core Processor
microcode: microcode updated early to new patch_level=0x0830107a

The same problem was not observed on an Intel server using virtio
network interfaces with the same kernel update.

I suspect the problem may be caused by the patches for INCEPTION
because the EPYC 7282 processor is affected by that (and Zenbleed),
but that may be incorrect.

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#85922 — Bug#1043544: marked as done (qemu kvm rtl8139 interface breaks with linux-image-5.10.0-24-amd64)

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Your message dated Thu, 20 Feb 2025 15:32:50 +0100 (CET)
with message-id <20250220143250.5647DBE2EE7@eldamar.lan>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #1043544,
regarding qemu kvm rtl8139 interface breaks with linux-image-5.10.0-24-amd64
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1043544: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1043544
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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