On Fri, Jul 28, 2017 at 10:07:57AM +0200, Paolo Abeni wrote:
> Ad a workaround you can disable UDP early demux:
> 
> echo 0 > /proc/sys/net/ipv4/udp_early_demux
> 
> (will affect both ipv4 and ipv6).
> 
> and (if the system  is already into the bad state) increase the udp
> accounted memory limit, writing in /proc/sys/net/ipv4/udp_mem greater
> values than the current ones (the actual values depends on the system
> total memory).

I can confirm that these two changes make a system in bad state work
again immediately. Will try the patch on 4.12.4 later today.

Thanks for helping!

Greetings
Marc

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