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From: Ishii Naoyuki <aab64290@pop12.odn.ne.jp>
Date: Thu, 25 Sep 2003 21:48:01 +0900
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Subject: Re: USB hangs during boot of 4.9
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My system also hangs.

It seems to occur after the change commited on 2003.09.10.00.40.38 to

src/sys/cam/scsi/scsi_cd.c
src/sys/cam/scsi/scsi_da.c
src/sys/kern/subr_taskqueue.c
src/sys/sys/taskqueue.h