gmirror panic on RELENG_8

[Pawel Jakub Dawidek]

On Tue, Jan 11, 2011 at 02:14:12PM -0600, Steve Price wrote:
> > Panic message and backtrace is minimum what you need to provide.
> > Really, even taking photo of your screen with panic message and
> > backtrace might be enough.
> 
> I'm unable to get a coredump at the moment but here's what
> I typed in from a couple of screenshots I took.
> 
> SMP: AP CPU #1 Launched!
> SMP: AP CPU #2 Launched!
> SMP: AP CPU #3 Launched!
> Fatal trap 12 with interrupts disabled
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address    = 0x8
> fault code                  = supervisor read, page not present
> instruction pointer       = 0x20:0xc0bd0c22
> stack pointer              = 0x28:0xc1020c7c
> frame pointer              = 0x28:0xc1020c94
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                                  = DPL 0, pres 1, def32 1, gran 1
> processor eflags         = resume, IOPL = 0
> current process          = 0 (swapper)
> trap number               = 12
> panic: page fault
> cpuid = 0
> KDB: stack backtrace:
> #0 0xc08e0ef7 at kdb_backtrace+0x47
> #1 0xc08b1fb7 at panic+0x117
> #2 0xc0be4c93 at trap_fatal+0x323
> #3 0xc0be4f10 at trap_pfault+0x270
> #4 0xc0be5455 at trap+0x465
> #5 0xc0bcc08c at calltrap+0x6
> #6 0xc0bd45dc at lapic_handle_intr+0x4c
> #7 0xc0bcc455 at Xapic_isr1+0x35
> #8 0xc0bd2180 at ioapic_assign_cpu+0x230
> #9 0xc0bd0e6a at intr_shuffle_irqs+0xba
> #10 0xc08690bc at mi_startup+0xac
> #11 0xc0474885 at begin+0x2c
> Uptime: 9s
> Cannot dump. Device not defined or unavailable.
> Automatic reboot in 15 seconds - press a key on the console to abort

Well, it really doesn't look like gmirror's fault.

John Baldwin might have just fixed this in stable/8 in r216923.

-- 
Pawel Jakub Dawidek                       http://www.wheelsystems.com
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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