48hr panics: Fatal trap 19: non-maskable interrupt trap while in kernel mode

I get these about once every 48hrs for about 2 weeks on a box I build
-current once or twice a week.

First panic here is from Wednesday, the panic at the end of this message 
is from Friday morning's -current.  Is there any problem currently
with dumpdev=auto and savecore?  Note the silly lockheld panic when I call
doadump. 

box standing by.

-Mark

Fatal trap 19: non-maskable interrupt trap while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x8:0xc084cbb9
stack pointer           = 0x10:0xd5451cb8
frame pointer           = 0x10:0xd5451ccc
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         = 9 (pagezero)
[thread 100048]
Stopped at      i686_pagezero+0x35:     repe stosl      %es:(%edi)
db> where
i686_pagezero(c15bd7f8,0,c08d5e00,71,ff) at i686_pagezero+0x35
vm_page_zero_idle(c09b8b30,0,ff,c08d5e1e,7530) at vm_page_zero_idle+0x9a
vm_pagezero(0,d5451d48,c08ba5d3,31f,44c7085d) at vm_pagezero+0x9e
fork_exit(c0806910,0,d5451d48) at fork_exit+0xc6
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xd5451d7c, ebp = 0 ---
db> show intrcnt
irq4: sio0              2091
irq8: rtc               19058423
irq14: ata0             125722
irq15: ata1             47
irq10: fxp0 fxp1+       5006360
irq0: clk               14888716
db> show idt
  0     Xdiv
  1     Xdbg
  2     Xnmi
  3     Xbpt
  4     Xofl
  5     Xbnd
  6     Xill
  7     Xdna
  8     0
  9     Xfpusegm
 10     Xtss
 11     Xmissing
 12     Xstk
 13     Xprot
 14     Xpage
 16     Xfpu
 17     Xalign
 18     Xmchk
 19     Xxmm
 32     Xatpic_intr0
 33     Xatpic_intr1
 35     Xatpic_intr3
 36     Xatpic_intr4
 37     Xatpic_intr5
 38     Xatpic_intr6
 39     Xatpic_intr7
 40     Xatpic_intr8
 41     Xatpic_intr9
 42     Xatpic_intr10
 43     Xatpic_intr11
 44     Xatpic_intr12
 45     Xatpic_intr13
 46     Xatpic_intr14
 47     Xatpic_intr15
 49     Xapic_isr1
 51     Xapic_isr1
 52     Xapic_isr1
 53     Xapic_isr1
 55     Xapic_isr1
 56     Xapic_isr1
 58     Xapic_isr1
 60     Xapic_isr1
 61     Xapic_isr1
 62     Xapic_isr1
 63     Xapic_isr1
128     Xint0x80_syscall
255     Xspuriousint

Fatal trap 19: non-maskable interrupt trap while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x8:0xc084e729
stack pointer           = 0x10:0xd5451cb8
frame pointer           = 0x10:0xd5451ccc
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         = 9 (pagezero)
[thread 100048]
Stopped at      i686_pagezero+0x35:     repe stosl      %es:(%edi)
db> call doadump
Dumping 512 MB
panic: blockable sleep lock (sleep mutex) taskqueue
_at_ /usr/src/sys/kern/subr_tas
kqueue.c:132
cpuid = 0
Uptime: 2d11h23m40s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...

Reading symbols from /usr/obj/usr/src/sys/GENERIC/kernel.debug...done.
(gdb) l *0xc084e729
0xc084e729 is at /usr/src/sys/i386/i386/support.s:414.
409             movl    $16, %ecx
410             subl    %ebx, %ecx
411
412     3:
413             subl    %ecx, %edx
414             rep
415             stosl
416
417             movl    %edx, %ecx
418             testl   %edx, %edx

-- 
othermark
atkin901 at nospam dot yahoo dot com
(!wired)?(coffee++):(wired);