panic; current process = 0 (ath0 taskq)

Hi

I've been getting a lot of these lately.  Especially when my wireless
struggles to maintain its association with the AP.

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0xc6e5da00
fault code              = supervisor write, page not present
instruction pointer     = 0x20:0xc051e0a8
stack pointer           = 0x28:0xdea1dc28
frame pointer           = 0x28:0xdea1dc8c
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         = 0 (ath0 taskq)
trap number             = 12
panic: page fault
cpuid = 0
Uptime: 4h50m4s
Physical memory: 2027 MB
Dumping 202 MB: 187 171 155 139 123 107 91 75 59 43 27 11

(kgdb)
#0  doadump (textdump=1) at pcpu.h:244
#1  0xc0690729 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:430
#2  0xc069099a in panic (fmt=Variable "fmt" is not available.)
    at /usr/src/sys/kern/kern_shutdown.c:595
#3  0xc085492e in trap_fatal (frame=0xdea1dbe8, eva=3336952320)
    at /usr/src/sys/i386/i386/trap.c:967
#4  0xc0854b73 in trap_pfault (frame=0xdea1dbe8, usermode=0, eva=3336952320)
    at /usr/src/sys/i386/i386/trap.c:880
#5  0xc085500d in trap (frame=0xdea1dbe8) at /usr/src/sys/i386/i386/trap.c:555
#6  0xc083f2bc in calltrap () at /usr/src/sys/i386/i386/exception.s:168
#7  0xc051e0a8 in ath_rx_proc (arg=0xc4e58000, npending=1)
    at /usr/src/sys/dev/ath/if_ath.c:3651
#8  0xc06cc38d in taskqueue_run_locked (queue=0xc4e6b8c0)
    at /usr/src/sys/kern/subr_taskqueue.c:306
#9  0xc06cd1e5 in taskqueue_thread_loop (arg=0xc4e5832c)
    at /usr/src/sys/kern/subr_taskqueue.c:495
#10 0xc06664f9 in fork_exit (callout=0xc06cd129 <taskqueue_thread_loop>, 
    arg=0xc4e5832c, frame=0xdea1dd28) at /usr/src/sys/kern/kern_fork.c:941
#11 0xc083f334 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:275

Full crash message attached.

Ian

-- 
Ian Freislich