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Subject: [Bug 213257] Crash in IGB driver
Date: Thu, 06 Oct 2016 20:28:36 +0000
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.3-STABLE
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X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: dustinwenz@ebureau.com
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213257

            Bug ID: 213257
           Summary: Crash in IGB driver
           Product: Base System
           Version: 10.3-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: dustinwenz@ebureau.com
                CC: freebsd-amd64@FreeBSD.org
                CC: freebsd-amd64@FreeBSD.org

I see intermittent panics under moderate network load that began up sometime
between 10-STABLE r295115 and r303709. I realize that's several months wort=
h of
changes, but regression testing this one is very time consuming. I suspect =
it
has something to do with r303174 "If ALTQ is defined in the kern conf, swit=
ch
to Legacy Mode", but I do not know for certain.

The kernel is built with these options (I am using PF with some simple
filtering rules, but no ALTQ functionality):

device pf
device pflog
device pfsync
options ALTQ
options ALTQ_CBQ
options ALTQ_RED
options ALTQ_RIO
options ALTQ_HFSC
options ALTQ_CDNR
options ALTQ_PRIQ

If I rebuild without ALTQ, the panics no longer recur.

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