Cybova hlaska kernelu (asi vadny HW)

[Jan Klepal]

Zdravim,

mam tu jeden pocitac (no spis srot :), ktery tak 4x za den vyprodukuje
nasledujici chybovou hlasku:

Mar 10 21:21:04 relis kernel: kmem_free: Bad obj addr (objp=c0e9eb40,
name=size-32)
Mar 10 21:21:04 relis kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Mar 10 21:21:04 relis kernel: current->tss.cr3 = 0276b000, %%cr3 =
0276b000
Mar 10 21:21:04 relis kernel: *pde = 00000000
Mar 10 21:21:04 relis kernel: Oops: 0002
Mar 10 21:21:04 relis kernel: CPU:    0
Mar 10 21:21:04 relis kernel: EIP:    0010:[kfree+377/424]
Mar 10 21:21:04 relis kernel: EFLAGS: 00010202
Mar 10 21:21:04 relis kernel: eax: 00000039   ebx: c2fff080   ecx:
00000003   edx: 00000038
Mar 10 21:21:04 relis kernel: esi: c0e9eb40   edi: 00000202   ebp:
00001000   esp: c13fbf58
Mar 10 21:21:04 relis kernel: ds: 0018   es: 0018   ss: 0018
Mar 10 21:21:04 relis kernel: Process sshd (pid: 19912, process nr: 47,
stackpage=c13fb000)
Mar 10 21:21:05 relis kernel: Stack: bffff2c4 00000025 c1e9eb7c 00000006
c012f88a c0e9eb40 c13fa000 00000000
Mar 10 21:21:05 relis kernel:        00000000 bffff288 c0e9eb54 00000000
c0e9eb50 00000001 00000001 c13fbfa8
Mar 10 21:21:05 relis kernel:        00000001 c13fa000 c0e9eb40 7fffffff
c0e9eb40 c0e9eb44 c0e9eb48 c0e9eb4c
Mar 10 21:21:05 relis kernel: Call Trace: [sys_select+1346/1360]
[system_call+52/56]
Mar 10 21:21:05 relis kernel: Code: c7 05 00 00 00 00 00 00 00 00 eb 1b
8d 76 00 56 68 c2 c8 1d

Dusledky josu takove ze aplikace u ktere se tato chyba vyskytne spadne.

Zajimalo by mne jestli je mozne z teto chybove hlasky zjistit zda jde o
chybu Pameti, Procesoru, Cybu konfigurace, nebo je-li to proste chyba
nekde v HW...

Chyba se vyskytuje zcela nahodne, at uz co do casu od zapnuti pocitace
nebo programem ve kterem se chyba vyskytne (dela to ssh, sed, sh no
proste nahodne vsechno).
SW: RH 7.0, kernel 2.2.18 (to same dela i standardni kernel  z
distribuce 2.2.16-22)
HW: Intel P-133, 128MB RAM, IDE HDD, NIC RTL 8139 komp.
Na onom pocitaci bezi httpd, mysqld, sshd

Jan Klepal