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Date:      Thu, 17 Oct 2019 16:33:52 -0700
From:      John Baldwin <jhb@FreeBSD.org>
To:        "Keller, Jacob E" <jacob.e.keller@intel.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Cc:        "shurd@llnw.com" <shurd@llnw.com>, "Joyner, Eric" <eric.joyner@intel.com>
Subject:   Re: panic on invalid ifp pointer in iflib drivers
Message-ID:  <80ba676b-1b26-5384-b7ef-0d853988616d@FreeBSD.org>
In-Reply-To: <02874ECE860811409154E81DA85FBB5896931470@ORSMSX121.amr.corp.intel.com>
References:  <02874ECE860811409154E81DA85FBB589692E0D4@ORSMSX121.amr.corp.intel.com> <23f1e835-5dbb-055b-3768-f361311a9387@FreeBSD.org> <02874ECE860811409154E81DA85FBB5896931470@ORSMSX121.amr.corp.intel.com>

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On 10/17/19 4:22 PM, Keller, Jacob E wrote:
> Hmm.. now that I look at that more closely I think it's a separate issue.

This may just be the rcvif issue where we don't reference count the ifp we
store in rcvif in mbufs?  That was my reaction to your first e-mail except
that you said it wasn't reproducible on some other drivers.  I wonder if
other drivers would also provoke this if you just ran them in a detach/attach
loop long enough.

-- 
John Baldwin



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