kernel-packages team mailing list archive

[Jon Maloy <jon.maloy@xxxxxxxxxxxx>]

Hi,
I have installed and tested it as far as I could without being able to reproduce the problem.
You can go ahead.

Thank you for your help.
///jon

PS. I hope I will receive a hint when this is officially released, so I
can alert the users who have seen the problem.


> -----Original Message-----
> From: bounces@xxxxxxxxxxxxx [mailto:bounces@xxxxxxxxxxxxx] On Behalf Of
> Joseph Salisbury
> Sent: Monday, 18 April, 2016 14:17
> To: Jon Maloy
> Subject: [Bug 1567064] Re: tipc: missing linearization of sk_buff
> 
> I built a Xenial test kernel with a cherry-pick of commit c7cad0d6f.
> This test kernel can be downloaded from:
> 
> http://kernel.ubuntu.com/~jsalisbury/lp1567064/
> 
> Can you test this kernel and see if it resolves this bug?
> 
> Thanks in advance!
> 
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1567064
> 
> Title:
>   tipc: missing linearization of sk_buff
> 
> Status in linux package in Ubuntu:
>   In Progress
> Status in linux source package in Xenial:
>   In Progress
> 
> Bug description:
>   The TIPC binding table sometimes fails to update correctly between
>   nodes because we don't linearize nonlinear buffers at two places where
>   it is needed in the code.
> 
>   In the upstream kernel at kernel.org, the following commit was applied
>   on Nov 19th 2015:
> 
>   commit c7cad0d6f70cd4ce8644ffe528a4df1cdc2e77f5   ("tipc: move
>   linearization of buffers to generic code") that fixes this issue.
> 
>   This crucial fix made it into kernel 4.5, but unfortunately not into
>   4.4 that is used in Xenial, and makes TIPC in Xenial almost unusable
>   as it is now.
> 
>   Now I am uncertain about how to proceed with this, since I am new with dealing
> with the Ubuntu kernel.
>   -  Do you apply such fixes from kernel.org if I post a new one to
> kernel.org/stable? (The one referred to above won't apply cleanly to 4.4).
>   - Or should I issue a new one directly to Ubuntu's kernel team ?
>   - Or do you fix it yourself (it it pretty trivial and safe if you take a look at the
> original commit I refer to) ?
> 
>   BR
>   Jon Maloy
>   Ericsson Canada Inc
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1567064/+subscriptions

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https://bugs.launchpad.net/bugs/1567064

Title:
  tipc: missing linearization of sk_buff

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  The TIPC binding table sometimes fails to update correctly between
  nodes because we don't linearize nonlinear buffers at two places where
  it is needed in the code.

  In the upstream kernel at kernel.org, the following commit was applied
  on Nov 19th 2015:

  commit c7cad0d6f70cd4ce8644ffe528a4df1cdc2e77f5   ("tipc: move
  linearization of buffers to generic code") that fixes this issue.

  This crucial fix made it into kernel 4.5, but unfortunately not into
  4.4 that is used in Xenial, and makes TIPC in Xenial almost unusable
  as it is now.

  Now I am uncertain about how to proceed with this, since I am new with dealing with the Ubuntu kernel. 
  -  Do you apply such fixes from kernel.org if I post a new one to kernel.org/stable? (The one referred to above won't apply cleanly to 4.4).  
  - Or should I issue a new one directly to Ubuntu's kernel team ? 
  - Or do you fix it yourself (it it pretty trivial and safe if you take a look at the original commit I refer to) ?

  BR
  Jon Maloy
  Ericsson Canada Inc

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1567064/+subscriptions