Thinkpad panic woes (was Re: CDRW causes Thinkpad T41 to panic)

On Wed, 26 May 2004, Kent Hauser wrote:
> Hi,
> 
> Thanks for the input. After disabling the "hotswap" interrupt via the Thinkpad 
> PS2 command at the suggestion of "Nikolay Denev" <nike_d_at_cytexbg.com> 
> (at least I think that's the interrupt I turned off...), I now sometimes get 
> further in my boot. Now it only normally panics at startup -- an the message 
> is as follows:
> 
> ad0: 35293MB <HTS548040MAT00> [71707/16/63] at ata0-master UDMA100
> ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> acd0: CDRW <UJDA755zDVD/CDRW> at ata1-master UDMA33
> Memory modified after free 0xc44d8a00(508) val=1ff01ff _at_ 0xc44d8a00

Has anyone figured this out yet?  Here's a traceback from my
Thinkpad R40 (I get the same message above).  I was able to
get the kernel to boot once by disabling atapicam, but even
that doesn't work any longer.  The trace just moves from
xpt_foo() to g_conf_foo().  The trace from below is with
atapicam built into the kernel.

This damn thing doesn't have a serial port on it from what
I can see, so the information below is hand-scribed.

5.2.1-release worked on this as long as ACPI was disabled.

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x1ff021f
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc069c93a
stack pointer           = 0x10:0xc0c21ba4
frame pointer           = 0x10:0xc0c21bc0
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 (swapper)
kernel: type 12 trap, code = 0
Stoped at       mtrash_ctor+0x3a:       movl    0x20(%eax),%eax
db> trace
mtrash_ctor(c2398c00,200,0) at mtrash_ctor+0x3a
uma_zalloc_arg(c1045cc0,0,1) at uma_zalloc_arg+0x169
malloc(1a0,c0774d60,1,c2393b80,c2395640) at malloc+0xb7
xpt_alloc_device(c2393b80,c2395640,0) at xpt_alloc_device+0x3e
xpt_compile_path(c23942b0,c14f5b80,0,0,0) at xpt_compile_path+0x84
xpt_create_path(c0c21ca4,c14f5b80,0,0,0) at xpt_create_path+0x49
xpt_scan_bus(c14f5b80,c243d000,c0c21cf0,c0440749,c2393bc0) at xpt_scan_bus+0xea
xpt_action(c243d000,c243d000,c2393b80,c044025c,c0c21d14) at xpt_action+0x7e2
xpt_finishconfig(c14f5b80,c243d000) at xpt_finishconfig+0x30
xptconfigfunc(c2393b80,0,c0c21d40,c04400c3,c2393b80) at xptconfigfunc+0x10b
xptdefbusfunc(c2393b80,c0c21d54,0,c04437bc) at xptbustraverse+0x2b
xpt_for_all_busses(c04437bc,0) at xpt_for_all_busses+0x29
xpt_config(0) at xpt_config+-x74
run_interrupt_driven_config_hooks(0,c1ec00,c1e000,0,c043bd15) at
run_interrupt_driven_config_hooks+0x18
mi_startup() at mi_startup+0x96
begin() at begin+0x2c
db>