Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc6/2.6.17-rc6-mm2/

I got a oops :

Unable to handle kernel NULL pointer dereference at 0000000000000007 RIP:
 [<ffffffff8025b017>] dec_zone_page_state+0x1/0x5b
PGD 13d6c7067 PUD 13de23067 PMD 0
Oops: 0000 [1] SMP
last sysfs file: /class/vc/vcsa4/dev
CPU 0
Modules linked in: autofs4 nfs lockd sunrpc joydev sony_acpi button battery
ac uhci_hcd ehci_hcd tg3 sg ext3 jbd ata_piix libataPid: 2409, comm:
rpciod/0 Not tainted 2.6.17-rc6-mm2 #1
RIP: 0010:[<ffffffff8025b017>]  [<ffffffff8025b017>]
dec_zone_page_state+0x1/0x5b
RSP: 0018:ffff81013f2c3da8  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff81013d09d570 RCX: 0000000000000206
RDX: ffff810001029260 RSI: 0000000000000007 RDI: 0000000000000000
RBP: ffff81013f2c3dd8 R08: 0000000300000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff81013f57e338
R13: ffff81013f57e340 R14: 0000000000000287 R15: ffff81013f57e340
FS:  0000000000000000(0000) GS:ffffffff807f9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000007 CR3: 000000013d143000 CR4: 00000000000006e0
Process rpciod/0 (pid: 2409, threadinfo ffff81013f2c2000, task
ffff8101406e2080)
Stack:  ffff81013f2c3dd8 ffffffff880eab1b 0000000000000000 ffff81013f57e340
 ffff81013f57e410 0000000000000000 ffff81013f2c3df8 ffffffff880a5a51
 ffff81013f57e340 ffff81013f57e340
Call Trace:
 [<ffffffff880eab1b>] :nfs:nfs_commit_done+0x188/0x196
 [<ffffffff880a5a51>] :sunrpc:rpc_exit_task+0x2a/0x6c
 [<ffffffff880a5f98>] :sunrpc:__rpc_execute+0x99/0x1e0
 [<ffffffff880a60e8>] :sunrpc:rpc_async_schedule+0x9/0xb
 [<ffffffff8023c72e>] run_workqueue+0xa8/0xef
 [<ffffffff880a60df>] :sunrpc:rpc_async_schedule+0x0/0xb
 [<ffffffff8023c775>] worker_thread+0x0/0x12f
 [<ffffffff8023c871>] worker_thread+0xfc/0x12f
 [<ffffffff80225eca>] default_wake_function+0x0/0xf
 [<ffffffff80225eca>] default_wake_function+0x0/0xf
 [<ffffffff8023c775>] worker_thread+0x0/0x12f
 [<ffffffff8023f92c>] kthread+0xd0/0xfc
 [<ffffffff8020a33a>] child_rip+0x8/0x12
 [<ffffffff8023f85c>] kthread+0x0/0xfc
 [<ffffffff8020a332>] child_rip+0x0/0x12


Code: 48 0f b6 47 07 48 89 e5 4c 8b 0c c5 80 2b 80 80 9c 41 58 fa
RIP  [<ffffffff8025b017>] dec_zone_page_state+0x1/0x5b
 RSP <ffff81013f2c3da8>
CR2: 0000000000000007




dmesg and config follow.

thanks,

C.