Problem with 2.4.20: Unable to handle kernel NULL pointer dereference at virtual address 00000004

From: Zhenghui Zhou (zzh@wideinfo.com.cn)
Date: Sat Mar 15 2003 - 01:33:53 EST

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I runing a heavy stress on a linux system with kernel 2.4.20, and I
got the error messages now and again when start a new process, the
frequence is get higher as the heavity, but all the running processes
is ok.

I don't know what's the problem?

Code: 8b 51 04 83 fa ff 0f 84 56 01 00 00 83 fa fc 77 07 c7 41 04
<1>Unable to handle kernel NULL pointer dereference at virtual
address 00000004
printing eip:
dfd7d718
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<dfd7d718>] Not tainted
EFLAGS: 00010286
eax: bffffd44 ebx: ddd16000 ecx: 00000000 edx: ddd16000
esi: c0106c33 edi: 0000000b ebp: ddd17fb8 esp: ddd17f84
ds: 0018 es: 0018 ss: 0018
Process killall (pid: 32346, stackpage=ddd17000)
Stack: ddd16000 c0106c33 0000000b 00000000 da3a9000 0000000b ddd17fbc
c0105987
bffffd44 c01059a7 00000000 00000a3a 00000020 bffff934 dfd7d8e8
00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000
0000002b
Call Trace: [<c0106c33>] [<c0105987>] [<c01059a7>]

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Next message: Andrew Morton: "Re: [PATCH] concurrent block allocation for ext2 against 2.5.64"
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