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Subject: [Bug 193762] New: [cc_cdg] crash after change
 net.inet.tcp.cc.cdg.smoothing_factor
Date: Fri, 19 Sep 2014 03:05:09 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.1-BETA1
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: iron@mail.ua
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193762

            Bug ID: 193762
           Summary: [cc_cdg] crash after change
                    net.inet.tcp.cc.cdg.smoothing_factor
           Product: Base System
           Version: 10.1-BETA1
          Hardware: amd64
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: iron@mail.ua

Hello,

FreeBSD 10.1-BETA1 r271827.

1) # kldload cc_cdg
2) # sysctl net.inet.tcp.cc.algorithm=cdg
3) # sysctl net.inet.tcp.cc.cdg.smoothing_factor=0

After that system works 5-10 sec, freezes and restarts. I could reproduce it on
my server and desktop.

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