atapicam panic

Hi,

I'm getting this reproducible panic when booting an atapicam-enabled
CURRENT kernel from todays sources.


ad0: 57231MB <HTS726060M9AT00 MH4OA6DA> at ata0-master UDMA100
atapicam1: <ATAPI CAM Attachment> on ata1


Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xff53f000
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0611c98
stack pointer           = 0x10:0xd5656afc
frame pointer           = 0x10:0xd5656afc
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         = 31 (swi6: task queue)
[thread pid 31 tid 100023 ]
Stopped at      strlen+0x8:     cmpb    $0,0(%edx)
db> tr
Tracing pid 31 tid 100023 td 0xc19b5730
strlen(ff53f000,d5656be8,c19b3e8c,c19b5730,d5656b6c) at strlen+0x8
kvprintf(c07e11fe,c05b8c30,d5656be8,a,d5656c30) at kvprintf+0x679
vsnprintf(c0852140,100,c07e11fe,d5656c2c,100) at vsnprintf+0x3c
panic(c07e11fe,ff53f000,c07cd585,2b2,c1bdc480) at panic+0x61
_mtx_unlock_flags(deadc31e,0,c07cd585,2b2,1) at _mtx_unlock_flags+0x69
atapi_cb(c1bdab60,1,d5656ca0,c058de8a,c1a258d8) at atapi_cb+0x11d
ata_completed(c1bdab60,1,c07e4f49,be,c1a258d8) at ata_completed+0x57c
taskqueue_run(c1a258c0,d5656d10,c057ed62,0,0) at taskqueue_run+0xb0
taskqueue_swi_run(0,0,c07df510,256,c0851a40) at taskqueue_swi_run+0x13
ithread_loop(c197bd80,d5656d48,c07df307,30c,0) at ithread_loop+0x172
fork_exit(c057ebf0,c197bd80,d5656d48) at fork_exit+0xc1
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xd5656d7c, ebp = 0 ---
db>


- Christian

-- 
Christian Brueffer	chris_at_unixpages.org	brueffer_at_FreeBSD.org
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