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Subject: Re: Panic on shutdown @r328436: "Unholding 6 with cnt = -559038242"
To: Warner Losh <imp@bsdimp.com>
Cc: FreeBSD Current <freebsd-current@freebsd.org>
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From: Allan Jude <allanjude@freebsd.org>
Message-ID: <8e4be036-688c-a7ce-d077-93b956b586f7@freebsd.org>
Date: Sun, 28 Jan 2018 22:11:42 -0500
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On 2018-01-28 21:29, Warner Losh wrote:
> 
>     I've been seeing this today while working on my laptop.
> 
>     1) insert USB stick.
>     2) mount UFS partition to /mnt
>     3) copy a file off
>     4) umount /mnt
>     5) remove usb stick
>     6) instant panic
> 
>     Oddly, it is the same negative number every time (-559038242), so it
>     isn't random/memory corruption.
> 
> 
> 
> Is mount required?
> 
> Warner 
> 
> 
No, I just plugged the USB stick in, and then removed it 10 seconds
later, panic.

I've also seen it in VirtualBox when removing a virtual CD (.iso)


-- 
Allan Jude