SMP forcing crash/reboot in 4.9-STABLE

Adam Maloney adam at
Fri Dec 19 09:45:59 PST 2003

We will get this ready to go, and probably put the SMP kernel back in next
week to gather this data for you.

I'll follow up with more information when I have it.

Thank you for the response.

----- Original Message ----- 
From: "Doug White" <dwhite at>
To: "Adam Maloney" <adam at>
Cc: <freebsd-stable at>
Sent: Thursday, December 18, 2003 5:02 PM
Subject: Re: SMP forcing crash/reboot in 4.9-STABLE

> On Thu, 18 Dec 2003, Adam Maloney wrote:
> > We have a 4-way P3/500 Xeon system running FreeBSD.  We had been running
> > 4.8-STABLE for a number of months with SMP enabled and no issues.
> > 25-November we moved to 4.9-STABLE.  The system ran without SMP enabled
> > until Tuesday, when we enabled SMP and APIC_IO, rebuilt the kernel, and
> > rebooted.  Then about every 30 minutes the system would reboot.  We
> > back to single-processor (using the source updated on 25-Nov) and it has
> > worked since.
> Please try attaching a serial console to the crashing system and set the
> system to serial console, then log anything that comes across. Also enable
> crashdumps.
> This way if it is panicking or saying anything before crashing, we can see
> whats going on.
> Without any other information there is nothing I can work off of to debug
> your issue.
> -- 
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite at          |

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