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Subject: Re: sysctl -a hangs ?
To: hiren panchasara <hiren@strugglingcoder.info>, Kurt Jaeger <lists@opsec.eu>
References: <20170321160407.GJ64587@home.opsec.eu>
 <20170321161438.GH80268@strugglingcoder.info>
Cc: freebsd-current@freebsd.org
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <bf177a6d-9733-bdb2-81f3-454aac60766d@selasky.org>
Date: Tue, 21 Mar 2017 17:29:00 +0100
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On 03/21/17 17:14, hiren panchasara wrote:
> On 03/21/17 at 05:04P, Kurt Jaeger wrote:
>> Hello,
>>
>> I have a freshly installed/updated FreeBSD 11.0p8 on a supermicro
>> X11SSZ-TLN4F board, and
>>
>> pkg install intel-ixl-kmod
>>
>> and now:
>>
>> sysctl -a
>>
>> 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.

Hi,

procstat -ak

Will tell you where it is stuck.

--HPS