Re: 2.4.20 st + aic7xxx (Adaptec 19160B) + VIA KT333 repeatable freeze

Date: Sun Dec 15 2002 - 07:49:55 EST

On Sun, Dec 15, 2002 at 10:42:40PM +1100, Keith Owens wrote:
> On Fri, 13 Dec 2002 11:51:27 +1100,
> Kevin Easton <> wrote:
> >I'm not sure exactly where this problem fits in, but I'm getting a
> >completely repeatable freeze (100% lockup, no response to keyboard)
> >triggered by writing to /dev/st0 (dd if=/dev/urandom of=/dev/st0 bs=512
> >count=163840 will reproduce it).
> >So... does anyone have any ideas how I should start trying to track this
> >down?
> Boot with nmi_watchdog=1 (smp) or nmi_watchdog=2 (smp or up), cat
> /proc/interrupts to verify that NMI is being used. If the problem is a
> disabled spinloop then the watchdog will trip after 5 seconds and give
> you a trace which can be run through ksymoops. If that trace does not
> give enough data to debug the problem, apply the kdb patch[*], read
> Documentation/kdb and start digging, bt first and debug from there.

Thanks, will try that in the morning.

        - Kevin.

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