[Pkg-uml-pkgs] Bug#741075: user-mode-linux: Occasional memory corruption on startup under high load

[Ritesh Raj Sarraf]

This is great news. Thank you.

s3nt fr0m a $martph0ne, excuse typ0s
On Aug 29, 2014 1:24 PM, "Anton Ivanov" <anton.ivanov at kot-begemot.co.uk>
wrote:

> On 09/03/14 21:35, Mattia Dongili wrote:
>
>> On Sat, Mar 08, 2014 at 07:04:56AM +0000, Anton Ivanov wrote:
>>
>>> Package: user-mode-linux
>>> Version: 3.2-2um-1+deb7u2+b1
>>> Severity: grave
>>> Tags: patch
>>> Justification: causes non-serious data loss
>>>
>>> Dear Maintainer,
>>>
>>> This bug is perennial. If we go through old bugs with
>>> "cannot reproduce" tag 50% of them are this one, the other
>>> 50% are the "you should not use pipe for interprocess IPC"
>>> which we will submit shortly.
>>>
>>> Manifestation of the problem - UML dies on startup for no
>>> reason with a memory corruption message. Occurs only on
>>> heavily loaded systems and usually when running a lot of
>>> UMLs.
>>>
>> Thanks for the patch.
>> I have noticed that you submitted these patch-set (together with the
>> other two you sent here and more) upstream and they will be in the
>> stable branch.
>> The easiest path here is also to go through the stable release of
>> linux-source where uml is built from. I'll keep an eye on the stable
>> tree but it'd be very helpful if you could add the stable tree commit
>> ids once the patches get included. Same story for the other two bugs.
>>
>
> All 3 bugs have now patches submitted upstream. I have submitted our other
> improvements as well.
>
> While they do not make a speed daemon of uml userspace they get it
> reasonably close to kvm. Kernel itself is now faster than qemu-kvm for most
> networking stuff.
>
> A.
>
>
>> Thanks!
>>
>
>
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