Date: Mon, 21 Sep 1998 14:05:34 -0500 From: Doug Ledford <dledford@dialnet.net> To: Heinz Mauelshagen <mauelsha@ez-darmstadt.telekom.de> Cc: aic7xxx@FreeBSD.ORG, mge@u9ete.ez-darmstadt.telekom.de Subject: Re: IRQ deadlocks Message-ID: <3606A37E.CD8902A2@dialnet.net> References: <9809211135.AA24221@mailgate99.telekom.de>
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Heinz Mauelshagen wrote:
> > Disable SMP and live a happy life. That, or downgrade the kernel to version
> > 2.0.33 and patch in the latest driver. The thing is, I have information
> > from a kernel deadlock where in I gathered the EIP information using the
> > print EIP patch, and the deadlock isn't related to the aic7xxx driver at all
> > (however, a faster disk subsystem will trigger the problem more often). It
> > appears to be a generic vm bug in the 34 and 35 kernels under SMP. With SMP
> > disabled, all is fine. With 2.0.33, all was fine. FWIW, the bug probably
> > existed in 2.0.33 as well, but for 2.0.34 thye made a change to the vm
> > subsystem that allowed swapping of shared COW pages (which 2.0.33 didn't do)
> > and this appears to have made it much easier to trigger the actual bug,
> > which is somewhere in the fork() code. That's my take on it anyway.
> >
>
> Does the vm bug show up in kernel > 2.1.120 on SMP too?
No, not that I'm aware of.
--
Doug Ledford <dledford@dialnet.net>
Opinions expressed are my own, but
they should be everybody's.
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