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Date: Tue, 21 Mar 2017 09:14:38 -0700
From: hiren panchasara <hiren@strugglingcoder.info>
To: Kurt Jaeger <lists@opsec.eu>
Cc: freebsd-current@freebsd.org
Subject: Re: sysctl -a hangs ?
Message-ID: <20170321161438.GH80268@strugglingcoder.info>
References: <20170321160407.GJ64587@home.opsec.eu>
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On 03/21/17 at 05:04P, Kurt Jaeger wrote:
> Hello,
>=20
> I have a freshly installed/updated FreeBSD 11.0p8 on a supermicro
> X11SSZ-TLN4F board, and
>=20
> pkg install intel-ixl-kmod
>=20
> and now:
>=20
> sysctl -a
>=20
> hangs. Any quick ideas how to debug this ?

If it's just not responding to anything, you can try to panic the box,
got to db> and see if you can find sleepchain/lockchain?
You can also take a dump and try to look at same with kgdb scripts.
You'd need kernel with WITNESS.

Cheers,
Hiren

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