kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Hi Chris,

Thanks for the update.  There is a Wily test kernel with the patch from comment #10 available at:
http://kernel.ubuntu.com/~jsalisbury/lp1495983/patched-kernel/wily/

This won't allow you to test the fix as it will be in the iso, but at
least it will test the patch with the latest Wily kernel and it should
prevent the panic.(Note you would probably also see the panic by just
trying to boot with the latest x86 Wily kernel).


Are you referring to the following initial patch that broke the 32bit
installation:

commit be0cf6ca301c61458dc4aa1a37acf4f58d2ed3d6
Author: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Date: Fri Mar 27 00:27:20 2015 -0700

    scsi: storvsc: Set the tablesize based on the information given by
the


That commit is now in Trusty(As of  Ubuntu-3.13.0-60) and Vivid(As of Ubuntu-3.19.0-23) and is causing a similar panic.  That commit was also added to Trusty and Vivid per bug 1445195 .  Not only does the panic happen at install time, but when ever I try to boot a 32bit kernel for Trusty, Vivid or Wily.

The patch mentioned in comment #10 does in fact fix the panic for Vivid
and Wily.  However, it does not fix the panic for Trusty.  Would it be
possible for you to test the latest Trusty and Vivid test kernels to see
if you also get this same panic?  The kernels can be downloaded from:

Trusty: https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/7925457
Vivid: https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/7925789

Another test would could try is to install Vivid or Trusty using the
iso, then install the latest kernel to see if it starts to cause the
panic.





** Changed in: linux (Ubuntu Vivid)
       Status: Invalid => Incomplete

** Changed in: linux (Ubuntu Trusty)
       Status: Invalid => Incomplete

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https://bugs.launchpad.net/bugs/1495983

Title:
  [Hyper-V] kernel panic occurs when installing Ubuntu Server 15.10 x32

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Trusty:
  Incomplete
Status in linux source package in Vivid:
  Incomplete
Status in linux source package in Wily:
  In Progress

Bug description:
  Attempting to install the latest build of Ubuntu Server 15.10 (Wily
  Werewolf) x32 on Hyper-V, after beginning installation a kernel panic
  occurs. The console log from the serial output is attached.

  http://cdimage.ubuntu.com/ubuntu-server/daily/current/

  I tried with the builds from 14th and 15th of September with the same result. This bug does not affect x64 builds. 
  Tried to start the installation with different resources with no effect, kernel panic always occurs no matter the VM settings.

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