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From: Jia-Shiun Li <jiashiun@gmail.com>
Date: Tue, 23 Jul 2013 23:12:04 +0800
Message-ID: <CAHNYxxNwhAJChd0=DErbBguqjoPFgfYDFjv-CRzi1WNDdUvExw@mail.gmail.com>
Subject: Panic at USB drive plugging in
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Hi all,

as personal preference I compiled kernel with drivers as module as
possible. Recently I found that plugging in USB drives causes kernel
to panic. But it does not happen when booting with GENERIC kernel
which has USB drivers compiled in.

panic screenshot:
http://goo.gl/pIIDaF

back trace:
http://goo.gl/ww4yy6

the kernel is compiled:
FreeBSD 4cbsd 10.0-CURRENT FreeBSD 10.0-CURRENT #1 r253395: Fri Jul 19
15:20:08 CST 2013     jsli@4cbsd:/usr/obj/usr/src/sys/Minimal  amd64

the back trace looks like devd and something had timing issues. Any ideas?


Regards,
Jia-Shiun.