On Fri, 5 Jan 2007 14:19:41 +0100 (CET)
Jiri Kosina <[email protected]> wrote:
> Hi,
>
> 2.6.20-rc3-mm1 hangs on boot on my IBM T42p when compiled with ACPI_BAY=y.
> Below is the trace of two BUGs I get.
Hi,
I was able to duplicate this problem - it only occurs when the bay
driver is built-in, not when the bay driver is compiled as a module.
While I work on the fix for the problem, you can as a temporary workaround
just use ACPI_BAY=m. By the way, I also found that the bay driver will
not build at all if ACPI_DOCK=n. Oops. I will fix that too.
thanks,
Kristen
>
> When compiled with ACPI_BAY=n, it boots fine.
>
> The traces are hand-rewritten (no serial console on that machine), so I
> have omitted the code offsets in the stacktraces.
>
> ACPI: ACPI Dock Station Driver
> ACPI: \_SB_PCI0.IDE0.SCND.MSTR: found ejectable bay
> ACPI: \_SB_PCI0.IDE0.SCND.MSTR: Adding notify handler
> PM: Adding info for platform:bay.0
> ACPI: Bay [\_SB_.PCI0.IDE0.SCND.MSTR] Added
> BUG: at lib/kref.c:32 kref_get()
> kref_get+0x34/0x3b
> kobject_get+0xf/0x13
> get_bus+0xe/0x1d
> bus_add_driver+0x13/0x165
> init_waitqueue_head+0x12/0x1e
> bay_init+0x57/0x79
> find_bay+0x0/0x2c4
> init+0x88/0x16d
> restore_nocheck+0x12/0x15
> init+0x0/0x16d
> init+0x0/0x16d
> kernel_thread_helper+0x7/0x10
> ==========
> BUG: at lib/kref.c:32 kref_get()
> kref_get+0x34/0x3b
> kobject_get+0xf/0x13
> kobject_init+0x5d/0x70
> kobject_set_name+0x5c/0x92
> bus_add_driver+0x50/0x79
> bay_init+0x57/0x79
> find_bay+0x0/0x2c4
> init+0x88/0x16d
> init+0x88/0x16d
> kernel_thread_helper+0x7/0x10
> =========
>
> --
> Jiri Kosina
>
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