kern/162491: EliteBook 8540p panic on acpi_hp module loading

[Alexey Slynko]

>Number:         162491
>Category:       kern
>Synopsis:       EliteBook 8540p panic on acpi_hp module loading
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 11 20:40:06 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Alexey Slynko
>Release:        9.0-RC1
>Organization:
Brandproduction Ltd
>Environment:
FreeBSD elizabet.brandproduction.ru 9.0-RC2 FreeBSD 9.0-RC2 #16: Fri Nov 11 23:27:09 MSK 2011     slynko at elizabet.brandproduction.ru:/usr/obj/usr/src/sys/ELIZABET  amd64

>Description:
My EliteBook 8540p panic on boot after upgrade to 9.0-RC1. I've tried to unload all kernel modules and load it manually. It was crashed on acpi_hp loading:

acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi1: <ACPI-WMI mapping> on acpi0
panic: make_dev_credv: bad si_name (error=17, si_name=wmistat)
cpuid = 3
KDB: stack backtrace:
#0 0xffffffff80464c3e at kdb_backtrace+0x5e
#1 0xffffffff8042db77 at panic+0x187
#2 0xffffffff803e50bc at make_dev_credv+0x1dc
#3 0xffffffff803e52af at make_dev+0x6f
#4 0xffffffff822683e9 at acpi_wmi_attach+0x339
#5 0xffffffff8045e059 at device_attach+0x69
#6 0xffffffff802dd833 at acpi_driver_added+0xa3
#7 0xffffffff8045c855 at devclass_driver_added+0x75
#8 0xffffffff8045d233 at devclass_add_driver+0x103
#9 0xffffffff8041b068 at module_register_init+0xb8
#10 0xffffffff80413636 at linker_load_module+0x9b6
#11 0xffffffff804139cc at linker_load_dependencies+0x1ac
#12 0xffffffff806901e6 at link_elf_load_file+0xaf6
#13 0xffffffff80413534 at linker_load_module+0x8b4
#14 0xffffffff80413abe at kern_kldload+0xbe
#15 0xffffffff80413cd4 at sys_kldload+0x84
#16 0xffffffff8066ca0a at amd64_syscall+0x4fa
#17 0xffffffff80657617 at Xfast_syscall+0xf7

>How-To-Repeat:
kldload acpi_hp on EliteBook 8540p
>Fix:
Unknown

>Release-Note:
>Audit-Trail:
>Unformatted: