a panic on uart_z8530_class?

[Bjoern A. Zeeb]

On Sat, 8 May 2010, Weongyo Jeong wrote:

> Hello,
>
> Anyone encountered this panic on recent CURRENT kernel?
>
> [root at test ~]# uname -a
> FreeBSD test 9.0-CURRENT FreeBSD 9.0-CURRENT #16: Sun May  2 00:24:12 PDT 2010     root at test:/usr/obj/usr/src/sys/GENERIC  amd64
>
> [root at test /home/freebsd/sys/modules/bwn]# ifconfig wlan0 create wlandev bwn0
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0x0
> fault code              = supervisor read instruction, page not present
> instruction pointer     = 0x20:0x0
> stack pointer           = 0x28:0xffffff8073cdd810
> frame pointer           = 0x28:0xffffff8073cdd8e0
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                        = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 1795 (ifconfig)
> [ thread pid 1795 tid 100096 ]
> Stopped at      0:      *** error reading from address 0 ***
> db> bt
> Tracing pid 1795 tid 100096 td 0xffffff0003d8b390
> uart_z8530_class() at 0
> ifc_simple_create() at ifc_simple_create+0x89
> if_clone_createif() at if_clone_createif+0x64
> ifioctl() at ifioctl+0x685

can you give me

l *ifc_simple_create+0x89
l *if_clone_createif+0x64
l *ifioctl+0x685

-- 
Bjoern A. Zeeb                                     (from 21) Micky Rosa:
    But as we've all said, this game is about the past and the future,
    and tonight we forget about the past. We just focus on the future.