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From: "Kristof Provost" <kp@FreeBSD.org>
To: "Shawn Webb" <shawn.webb@hardenedbsd.org>
Cc: "FreeBSD Current" <freebsd-current@freebsd.org>,
 "Alexander Leidinger" <Alexander@leidinger.net>
Subject: Re: iflib/bridge kernel panic
Date: Sun, 27 Sep 2020 17:51:32 +0200
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On 21 Sep 2020, at 14:16, Shawn Webb wrote:
> On Mon, Sep 21, 2020 at 09:57:40AM +0200, Kristof Provost wrote:
>> On 21 Sep 2020, at 2:52, Shawn Webb wrote:
>>>> From latest HEAD on a Dell Precision 7550 laptop:
>>>
>>> https://gist.github.com/lattera/a0803f31f58bcf8ead51ac1ebbc447e2
>>>
>>> The last working boot environment was 14 Aug 2020. If I get some 
>>> time to
>>> bisect commits, I'll try to figure out the culprit.
>>>
>> Try https://reviews.freebsd.org/D26418
>
> That seems to fix the kernel panic. dmesg gets spammed with a freak
> ton of these LOR messages now:
>
Here’s an early version of a task queue based approach: 
http://people.freebsd.org/~kp/0001-bridge-Cope-with-if_ioctl-s-that-sleep.patch

That still needs to be cleaned up, but this should resolve the sleep 
issue and the LOR.

Best regards,
Kristof