Kernel oops - 2.6.5-rc3-mm4

[Árni Hermann]

Got this just after the machine booted, every attempt to reproduce has
failed:

---- snip begin

Unable to handle kernel paging request at virtual address de78baf8
 printing eip:
c017c7e9
*pde = 00078063
*pte = 1e78b000
Oops: 0000 [#1]
DEBUG_PAGEALLOC
CPU:    0
EIP:    0060:[<c017c7e9>]    Not tainted VLI
EFLAGS: 00010202   (2.6.5-rc3-mm4)
EIP is at proc_pid_stat+0x179/0x400
eax: de78ba70   ebx: d721fa70   ecx: 00000000   edx: d8b27f84
esi: d721fa70   edi: 00000000   ebp: d5ff9f44   esp: d5ff9e28
ds: 007b   es: 007b   ss: 0068
Process ps (pid: 7659, threadinfo=d5ff9000 task=d5e6aa70)
Stack: d721fa70 c0164f0d d78b5f38 d77b2ebc c03aea00 c03aea00 d5ff9e70
c017a8fb
       d78b5f38 d77b2ebc 0000000d c039178a 00000004 d721fa70 ffffffea
fffffff4
       d7936f2c d7936ebc d5ff9e94 c015b8f3 d7936ebc d78b5f38 c03ae9a0
d78b5f38
Call Trace:
 [<c0164f0d>] d_instantiate+0x4d/0x60
 [<c017a8fb>] proc_pident_lookup+0xfb/0x2a0
 [<c015b8f3>] real_lookup+0xd3/0x100
 [<c015bb56>] do_lookup+0x86/0xa0
 [<c0117c58>] kernel_map_pages+0x28/0x60
 [<c011de3e>] do_exit+0x1de/0x330
 [<c0179793>] proc_info_read+0x53/0x140
 [<c014f0df>] vfs_read+0xcf/0x140
 [<c014f38f>] sys_read+0x3f/0x60
 [<c034a3ee>] sysenter_past_esp+0x43/0x65

Code: cb f9 ff 89 45 d0 89 34 24 e8 b4 cb f9 ff 89 45 cc 8b 86 88 00 00 00
c7 45 bc 00 00 00 00 85 c0 89 45 a8 74 0f 8b 86 90 00 00 00 <8b> 80 88 00
00 00 89 45 bc 8b 86 b8 01 00 00 bb 0a 00 00 00 8b
 blk: queue df1b2df8, I/O limit 4095Mb (mask 0xffffffff)


---- trace end


addr2line reports that it's fs/proc/array.c:350 which is:
ppid = task->pid ? task->real_parent->pid : 0;


I'm running a laptop, HP Compaq nx7000. Config is attached. Running
Gentoo, unstable.

Please cc, I'm not subscribed to the list.

-- ahr

Attachment: kernel-config
Description: Binary data