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.
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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