Re: Deadlocks with recent SMP current

From: Lukas Ertl <le_at_FreeBSD.org>
Date: Sat, 14 Aug 2004 16:23:45 +0200 (CEST)
On Fri, 13 Aug 2004, Robert Watson wrote:

> to be delivering in this hang (er, ouch).  You might want to try putting a
> kdb_enter() just after the T_NMI in both switch statements in trap() in
> i386/i386/trap.c.  This will cause the kernel to enter the debugger before
> digging into the more general NMI code, which generates log messages, etc,
> that may increase the chances of a problem.

Even with this change I only get a 'kernel trap 19 with interrupts 
disabled' when sending the NMI, but no DDB prompt.

cheers,
le

-- 
Lukas Ertl                         http://homepage.univie.ac.at/l.ertl/
le_at_FreeBSD.org                     http://people.freebsd.org/~le/
Received on Sat Aug 14 2004 - 12:23:58 UTC

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