** Description changed:
The actual fix for this issue would be to backport two related patches
that were accepted upstream in Feb/March 2019. But doing a full
- backport is complicated because of dependencies on other new code.
+ backport is complicated because of dependencies on other new code. The
+ two upstream commits are:
+
+ 75c65772c3d1 ("net/packet: Ask driver for protocol if not provided by user")
+ 18bed89107a4 ("af_packet: fix the tx skb protocol in raw sockets with
ETH_P_ALL")
Instead of a full backport of these patches, a SAUCE patch was generated
to avoid the complicated dependencies. The SAUCE patch is attached to
the bug.
Microsoft and the affected customer feel this patch is pretty small and
safe. Microsoft and the end customer have tested the backport and
confirmed that it solves the problem.
Backports are needed for both the 4.15.0 and the 5.0 azure kernels that
are used in Ubuntu 16.04 and Ubuntu 18.04 images in the Azure
Marketplace. The customer is using the 4.15 kernel from Ubuntu 16.04,
so getting this fix included there is fairly high priority, though not
“critical/emergency” level. Getting the fix included in the 5.0 kernel
in Ubuntu 18.04 in the Azure Marketplace is low priority.
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https://bugs.launchpad.net/bugs/1855461
Title:
[linux-azure] SAUCE patch to "Fix skb protocol value in
tpacket_fill_skb()"
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