(Cc-ing debian-kernel, note I am not subscribed to this list, please Cc me
on replies)

Hi,

after updating linux-image-3.16.0-4-amd64 from 3.16.7-2 to the latest
3.16.7-ckt2-1 networking on my rumprun-xen [1] domUs stopped working.
Here is an excerpt of the failure during Mini-OS boot:

net TX ring size 256
net RX ring size 256
netfront: node=device/vif/0 backend=/local/domain/0/backend/vif/21/0
netfront: MAC b2:11:11:11:11:11
backend not avalable, state=5
creating xenif0 failed: 22

It looks like the changes made in the fix for #767261, as mentioned in the
Debian changelog are the likely culprit:

  [ Ian Campbell ]
  * [xen] Backport various netback fixes (Closes: #767261).

However, I can't find a full final list of which fixes were backported.
Given that the last traffic on #767261 was on November 9th, I suspect at
least this upstream change from December 18 did NOT make it into the new
linux-image package:

xen-netback: support frontends without feature-rx-notify again
26c0e102585d5a4d311f5d6eb7f524d288e7f6b7 [2]

I can't verify this 100% as I don't know where in the archive I can find
the original 3.16.7-2 linux-image to downgrade to/compare the Debian diffs.

Should I reopen #767261 or file a new bug for this?

Thanks,

Martin

[1] http://repo.rumpkernel.org/rumprun-xen
[2]
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26c0e102585d5a4d311f5d6eb7f524d288e7f6b7

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