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Date:      Tue, 08 Sep 1998 17:12:56 +0930 (CST)
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        "Kenneth D. Merry" <ken@plutotech.com>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: CAM crashes
Message-ID:  <XFMail.980908171256.doconnor@gsoft.com.au>
In-Reply-To: <199809080738.BAA00360@panzer.plutotech.com>

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On 08-Sep-98 Kenneth D. Merry wrote:
>       Believe it or not, I just reproduced the panic on a -current SMP
>  CAM box.  The stack trace is almost identical.
Wohoo! :)

>       It really looks like a problem with shared memory, or perhaps
>  cdda2wav's use of it, rather than a CAM problem.  Notice the stack trace
>  comes from the shared memory code, not from anything in the CAM code.
Yeah, I haven't had the opportunity to test cdda2wav under a non-CAM system, so
I don't know if this is a CAM related problem or not.

>       I won't exactly disavow all responsibility for it, but I don't know
>  very much at all about the VM system.  If I have time, I'll take a look at
>  it some more, but I don't expect that to happen for a while.  I've got a
>  lot of work to do for the CAM integration, and I expect I'll have a fair
>  amount to do afterwards as well. :(
Heh :) Fair enough.. perhaps I should hassle a VM hacker =)

>       So, I suspect it really is a problem with either the shared memory
>  code or the VM system somewhere.
I'll see if I can get a non-CAM system to test this on, and let you know.

---------------------------------------------------------------------
|Daniel O'Connor software and network engineer for Genesis Software |
|http://www.gsoft.com.au                                            |
|The nice thing about standards is that there are so many of them to|
|choose from. -- Andrew Tanenbaum                                   |
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