Re: CPU load on queued_spin_lock_slowpath

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On Tue, Feb 06, 2018 at 10:56:20AM +0300, Tugrul Erdogan wrote:
> Hi All,
> 
> My server had a locking problem with the logs located below. I can not
> reproduce this erroneous situation again but I think that there is an
> active vulnerability at my server because of this error.
> 
> My server's kernel version is v4.6.4.

Probably this helps you?

commit 49f817d793d1bcc11d721881aac037b996feef5c
Author: Lin Zhang <xiaolou4617@xxxxxxxxx>
Date:   Fri Oct 6 00:44:03 2017 +0800

    netfilter: SYNPROXY: skip non-tcp packet in {ipv4, ipv6}_synproxy_hook

4.6.4 is rather old, BTW.
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