Ubuntu
linux-azure package

Apply Patch to 4.15 kernels which will resolve a netvsc bug

Bug #1923888 reported by Joseph Salisbury
This bug report is a duplicate of:  Bug #1924314: netvsc may cause CPU lockup. Edit Remove
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linux-azure (Ubuntu)
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Bug Description

A soft lockup is happening to Customers due to a bug in netvsc_poll.

Ubuntu 4.15.0-1103 has CONFIG_NET_POLL_CONTROLLER=y in kernel config file, there is a bug in netvsc that may cause CPU lockup with POLL_CONTROLLER. This bug has been fixed by the following patch:

commit 2a7f8c3b1d3feedee3aa319ac220cbde3725b5d5
Author: Stephen Hemminger <email address hidden>
Date: Sat Sep 29 14:52:56 2018 +0200

    hv_netvsc: remove ndo_poll_controller

This commit is in mainline as of 4.20-rc1.

Microsoft would like to request this patch in 4.15 based Azure kernels.

Joseph Salisbury (jsalisbury)
summary: - Apply Patch to 4.15 kernels to resolve netvsc bug
+ Apply Patch to 4.15 kernels which will resolve a netvsc bug
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