Seeing this on ACPI resume on a Compaq Presario X1050 laptop (with 
Alan's PATA libata patch but that seems unrelated):

Debug: sleeping function called from invalid context at mm/slab.c:2729
in_atomic():0, irqs_disabled():1
  [<c015efb4>] kmem_cache_alloc+0x54/0x70
  [<c021137e>] acpi_os_acquire_object+0xb/0x36
  [<c0225f37>] acpi_ut_allocate_object_desc_dbg+0x10/0x3e
  [<c0225faa>] acpi_ut_create_internal_object_dbg+0xf/0x5e
  [<c02225fb>] acpi_rs_set_srs_method_data+0x3d/0xba
  [<c010664c>] get_cmos_time+0x15c/0x170
  [<c0229864>] acpi_pci_link_set+0xf4/0x168
  [<c022990c>] irqrouter_resume+0x34/0x52
  [<c0260791>] __sysdev_resume+0x11/0x80
  [<c0260847>] sysdev_resume+0x47/0x70
  [<c02658a5>] device_power_up+0x5/0x10
  [<c013ce55>] enter_state+0x175/0x1d0
  [<c013cf45>] state_store+0x95/0xb0
  [<c013ceb0>] state_store+0x0/0xb0
  [<c01a29d9>] subsys_attr_store+0x29/0x40
  [<c01a2fa0>] sysfs_write_file+0xa0/0xf0
  [<c01a2f00>] sysfs_write_file+0x0/0xf0
  [<c01628af>] vfs_write+0xbf/0x180
  [<c01632b1>] sys_write+0x41/0x70
  [<c0102e3d>] syscall_call+0x7/0xb

Full dmesg attached.

Also ACPI resume remains busted on this laptop, but this is not a new 
issue: http://bugzilla.kernel.org/show_bug.cgi?id=6075

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/