Hello,

I've got a kernel crash when trying to suspend to disk. This crash
is 100% reproductible and is triggered only if CONFIG_DEBUG_INITDATA=y.

Steps to reproduce:
- Boot the system on runlevel 1
- Suspend to disk using "echo disk > /sys/power/state"

I took some pictures of kernel output :
http://laurent.riffard.free.fr/dsc02175a.jpg
http://laurent.riffard.free.fr/dsc02176a.jpg
http://laurent.riffard.free.fr/dsc02177a.jpg

Here are some lines I hand-copied from these screenshots:

BUG: unable to handle kernel paging request at virtual address c0300000
 printing eip:
*pde = 1ff27163
*pte = 003000000
Oops: 0000 [#1]
last sysfs file: /power/state
modules linked in: reiserts via-agp agpgart dm-mod
CPU: 0
EIP: 0060: [<c01a43c8>] Not tainted VLI
EFLAGS: 00010012 (2.6.16-rc2-mm1 #97)
EIP is at _mmx_memcpy+0x6a/0x12e
eax: dfe4b000 ebx: 00001000 ecx: 0010010010 edx: c0300000
esi: c0300000 edi: decbc000 ebp: dfe4bec8   esp: dfe4beb4
ds: 007b es: 007b ss: 0068
Process sh (pid: 1162, threadinfo=dfe4b000 task=dfe5cab0)
Stack: <0>decbc000 00000040 c02c1f80 de960ca8 0000194d dfe4bee8
c012d977 0001e69d
dea11000 00000300 00000000 00000004 c02820d8 dfe4bef8 c022308a c012c808
00000000 dfe4bf04 c012cbba fffffff0 dfe4bf18 c012bc82 dee10000 dee10004
Call Trace:
  show_stack_loglv+0xaa/0xb5
  show_registers+0x12/0x189
  die+0x135/0x4fc
  do_page_fault+0x3bc/0x4fc
  error_code+0x4f/0x54
  swsusp_save+0x1e6/0x25b
  swsusp_arch_suspend+0x2a/0x2c
  pn_suspend_disk+0x47/0xce
  enter_state+0x53/0x176
  state_store+0x84/0x92
  subsys_attr_store+0x20/0x25
  sysfs_write_file+0xb2/0xd7
  vfs-write+0x8a/0x133
  sys_write+0x3b/0x60
  sysenter_past_esp+0x54/0x75

I think the offending code line is "copy_data_pages(pagedir_nosave)"
in swsusp_save(void) (kernel/power/snapshot.c).

Hardware Environment: Desktop box, with AMD Athlon(TM) XP 1600+ on
Asus A7V133-C mobo (chipset VIA KT133A), 512 MB RAM

Distribution: Mandriva Linux release 2006.1 (Cooker) for i586,
Linux version 2.6.16-rc2-mm1 (laurent@antares.localdomain) (gcc
version 4.0.2 (4.0.2-1mdk for Mandriva Linux release 2006.1)) #97
Sun Feb 12 00:04:39 CET 2006

Attached: .config and dmesg from a normal boot.
~~
laurent