Date: Thu, 14 May 2009 13:17:56 -0400 From: John Baldwin <jhb@freebsd.org> To: Chris Timmons <cwt@networks.cwu.edu> Cc: freebsd-stable@freebsd.org, Martin Sugioarto <nakal@web.de> Subject: Re: kernel trap 12 with interrupts disabled [bge0 on 7.2R] Message-ID: <200905141317.56551.jhb@freebsd.org> In-Reply-To: <20090514093008.Q12558@n.cwu.edu> References: <1696198956@web.de> <20090514091410.H12558@n.cwu.edu> <20090514093008.Q12558@n.cwu.edu>
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On Thursday 14 May 2009 12:30:31 pm Chris Timmons wrote:
>
> (kgdb) list *0xc07a4dac
> 0xc07a4dac is in devvn_refthread (/usr/src/sys/kern/kern_conf.c:209).
> 204 struct cdev_priv *cdp;
> 205
> 206 mtx_assert(&devmtx, MA_NOTOWNED);
> 207 csw = NULL;
> 208 dev_lock();
> 209 *devp = vp->v_rdev;
> 210 if (*devp != NULL) {
> 211 cdp = (*devp)->si_priv;
> 212 if ((cdp->cdp_flags & CDP_SCHED_DTR) == 0) {
> 213 csw = (*devp)->si_devsw;
Can you get a stack trace? Your panic is quite different then the original
one.
> On Thu, 14 May 2009, Chris Timmons wrote:
>
> >
> > Yesterday I updated a rock-solid machine (uptime hundreds of days) from
> > 7-stable circa July, 2008, to the latest stable. I run Nessus on this
> > machine, with about 60 concurrent scans. It pushes the load average up as
> > high as 20 for short periods of time, but overall is reasonably efficient.
> >
> > I have never had the box become unresponsive, let alone crash, under any
load
> > scenario.
> >
> > This morning, I ran my first scan on 7.2-stable, with Nessus 4.0. It
lasted
> > about 30 seconds before:
> >
> >
> > Fatal trap 12: page fault while in kernel mode
> > cpuid = 2; apic id = 06
> > fault virtual address = 0x1c
> > fault code = supervisor read, page not present
> > instruction pointer = 0x20:0xc07a4dac
> > stack pointer = 0x28:0xee156ad4
> > frame pointer = 0x28:0xee156ad8
> > code segment = base 0x0, limit 0xfffff, type 0x1b
> > = DPL 0, pres 1, def32 1, gran 1
> > processor eflags = interrupt enabled, resume, IOPL = 0
> > current process = 5263 (nessusd)
> > trap number = 12
> > panic: page fault
> > cpuid = 3
>
>
--
John Baldwin
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