2017-03-15 19:50:01

by Lutz Vieweg

Subject: change "tcp: randomize tcp timestamp offsets for each connection" broke networking

Dear Linux Developers,

change set "tcp: randomize tcp timestamp offsets for each connection"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=95a22caee396cef0bb2ca8fafdd82966a49367bb
broke networking for several users starting from linux-4.10 -
connects (even to localhost) would just time out in many cases.

See
https://bugzilla.kernel.org/show_bug.cgi?id=194723
for a detailed description and the "git bisect" log.

Thanks for considering any fix in advance, best regards,

Lutz Vieweg

2017-03-16 02:50:32

by Mike Galbraith

Subject: Re: change "tcp: randomize tcp timestamp offsets for each connection" broke networking

On Wed, 2017-03-15 at 20:48 +0100, Lutz Vieweg wrote:
> Dear Linux Developers,
>
> change set "tcp: randomize tcp timestamp offsets for each connection"
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/co
> mmit/?id=95a22caee396cef0bb2ca8fafdd82966a49367bb
> broke networking for several users starting from linux-4.10 -
> connects (even to localhost) would just time out in many cases.
>
> See
> https://bugzilla.kernel.org/show_bug.cgi?id=194723
> for a detailed description and the "git bisect" log.

The netdev thread therein indicates that the fix is in the works...

-Mike