Re: Panic at USB drive plugging in

On 07/23/13 17:12, Jia-Shiun Li wrote:
> 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_at_4cbsd:/usr/obj/usr/src/sys/Minimal  amd64
>
> the back trace looks like devd and something had timing issues. Any ideas?
>

Hi,

This looks like a CAM/SCSI problem and not directly USB stack problem.

--HPS