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Re: kern/38762: panic: vwakeup: neg numoutput
The following reply was made to PR kern/38762; it has been noted by GNATS.
From: gson%gson.org@localhost (Andreas Gustafsson)
Cc: Greg Oster <oster%cs.usask.ca@localhost>
Subject: Re: kern/38762: panic: vwakeup: neg numoutput
Date: Fri, 22 Aug 2008 14:55:18 +0300 (EEST)
To rule out the possibility that I might have built my live CD wrong,
I went looking for other live CDs based on -current, and stumbled
across the following comment from a user of the "jibbed" live CD at
Usually, system hanged when I try to write any data to any
normal disk or USB device after boot from jibbed
That gave me the idea to try booting from a live CD (still one of my
own builds, not jibbed) but mounting, writing to, and unmounting a
file system on a hard disk (wd0a) instead of one on a USB mass storage
device. And guess what: at the unmount, it paniced with the same
"vwakeup: neg numoutput" message as when using the USB device.
So, it appares the bug is not USB specific at all, but that a mount /
write / unmount of _any_ FFS file system will cause a panic if you
have booted from a live CD.
Andreas Gustafsson, gson%gson.org@localhost
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