** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2002889
Title:
5.15.0-58.64 breaks xen bridge networking (pvh domU)
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Jammy:
Fix Committed
Status in linux source package in Kinetic:
Fix Committed
Bug description:
[Impact]
Xen guests will not have network access. This fixes a regression due to the
fix
for CVE-2022-3643.
[Testing]
This has only been build-tested.
[Potential regression]
Xen guests might not have network access.
----------------------------------------------------------------------
With 5.15.0-58.64-generic, bridge networking on xen is broken :
no packet (check with tcpdump) flowing between dom0 and any domUs
attached to a network bridge.
downgrading to 5.15.0-57-generic fix the issue. Thus the patch to the
netback driver seems the cause.
relevant network config :
brtctl show :
br0 8000.XXXXXXXXXXX no eno1
vif1.0
relevant domU config :
kernel = '/usr/lib/grub-xen/grub-i386-xen_pvh.bin'
type = 'pvh'
vif = [ 'ip=192.168.10.10 ,bridge=br0' ]
No message in dmesg, journal, xen logs..
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