Messages in this thread |  | | | Date | Sun, 15 Dec 2002 23:49:55 +1100 | | Subject | Re: 2.4.20 st + aic7xxx (Adaptec 19160B) + VIA KT333 repeatable freeze | | From | caf@guarana ... |
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On Sun, Dec 15, 2002 at 10:42:40PM +1100, Keith Owens wrote: > On Fri, 13 Dec 2002 11:51:27 +1100, > Kevin Easton <kevin@sylandro.com> 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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