High mem support, oops on 2.4.18

Hello!
Yesterday i sticked in another 256MB of ram [now it has 4x 256] and noticed that only ~900MB was availeble.. so i recompiled with the hi mem option [ i selected 4GB ]. But when it all loaded in the new build kernel it was all but normal.

when i tried running lilo it seg faulted leaving oops in the log, Load was going off like crazy [idle server with +15 load]...

I tried appending mem size to the lilo, but it made no diffrence.

if i use 2.4.18 without the Hi mem option it works without any oopses or problems what so ever, but with less availeble ram ofcourse :(

all oops`s start with "Unable to handle kernel NULL pointer dereference at virtual address 00000000"

The computer is :one Pentium III , 700mhz with 1G ram, running 2.4.18 kernel [RH 6.2]

i feed the ksymoops with oops that were in logs and got this out...

-----------------When i ran lilo--------------------

Jun 18 11:25:38 ena kernel:  <1>Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Jun 18 11:25:38 ena kernel: f88b920f
Jun 18 11:25:38 ena kernel: *pde = 00000000
Jun 18 11:25:38 ena kernel: Oops: 0000
Jun 18 11:25:38 ena kernel: CPU:    0
Jun 18 11:25:38 ena kernel: EIP:    0010:[<f88b920f>]    Not tainted
Jun 18 11:25:38 ena kernel: EFLAGS: 00010206
Jun 18 11:25:38 ena kernel: eax: 00000000   ebx: 00000400   ecx:
00000100   edx: f1bae000
Jun 18 11:25:38 ena kernel: esi: 00000000   edi: f1bae000   ebp:
c1c6eb80   esp: d6a35e64
Jun 18 11:25:38 ena kernel: ds: 0018   es: 0018   ss: 0018
Jun 18 11:25:38 ena kernel: Process lilo (pid: 12754,
stackpage=d6a35000)
Jun 18 11:25:38 ena kernel: Stack: 00000001 f2e788c0 c02e4d64 000044f8
00000000 00000000 00000000 000008a0
Jun 18 11:25:38 ena kernel:        f72cc690 f88b9295 00000001 f2e788c0
00000001 00000101 f2e788c0 c01a69ac
Jun 18 11:25:38 ena kernel:        c02e4d64 00000001 f2e788c0 00000002
00000001 f3756c80 000030a9 c01a6a6f
Jun 18 11:25:38 ena kernel: Call Trace: [<f88b9295>]
[disk_change+364/604] [disk_change+559/604]
[invalidate_inode_buffers+0/92] [getblk+41
/60]
Jun 18 11:25:38 ena kernel: Code: f3 a5 f6 c3 02 74 02 66 a5 f6 c3 01 74

01 a4 83 7c 24 28 00

Trace; f88b9295 <[rd]rd_make_request+3d/68>

Code; f88b920f <[rd]rd_blkdev_pagecache_IO+ff/148> 00000000 <_EIP>:
Code; f88b920f <[rd]rd_blkdev_pagecache_IO+ff/148> <=====
0: f3 a5 repz movsl %ds:(%esi),%es:(%edi)
<=====
Code; f88b9211 <[rd]rd_blkdev_pagecache_IO+101/148>
2: f6 c3 02 test $0x2,%bl
Code; f88b9214 <[rd]rd_blkdev_pagecache_IO+104/148>
5: 74 02 je 9 <_EIP+0x9> f88b9218
<[rd]rd_blkdev_pagecache_IO+108/148>
Code; f88b9216 <[rd]rd_blkdev_pagecache_IO+106/148>
7: 66 a5 movsw %ds:(%esi),%es:(%edi)
Code; f88b9218 <[rd]rd_blkdev_pagecache_IO+108/148>
9: f6 c3 01 test $0x1,%bl
Code; f88b921b <[rd]rd_blkdev_pagecache_IO+10b/148>
c: 74 01 je f <_EIP+0xf> f88b921e
<[rd]rd_blkdev_pagecache_IO+10e/148>
Code; f88b921d <[rd]rd_blkdev_pagecache_IO+10d/148>
e: a4 movsb %ds:(%esi),%es:(%edi)
Code; f88b921e <[rd]rd_blkdev_pagecache_IO+10e/148>
f: 83 7c 24 28 00 cmpl $0x0,0x28(%esp,1)

-----------------end lilo exec---------------------------

-----------------when i ran rsync ------------------------

Jun 18 09:22:16 ena kernel: ds: no socket drivers loaded!
Jun 18 09:22:39 ena kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Jun 18 09:22:39 ena kernel: f88b920f
Jun 18 09:22:39 ena kernel: *pde = 00000000
Jun 18 09:22:39 ena kernel: Oops: 0002
Jun 18 09:22:39 ena kernel: CPU:    0
Jun 18 09:22:39 ena kernel: EIP:    0010:[<f88b920f>]    Not tainted
Jun 18 09:22:39 ena kernel: EFLAGS: 00010206
Jun 18 09:22:39 ena kernel: eax: f6fe8400   ebx: 00000400   ecx:
00000100   edx: 00000000
Jun 18 09:22:39 ena kernel: esi: f6fe8400   edi: 00000000   ebp:
c1dbfa00   esp: f7815dac
Jun 18 09:22:39 ena kernel: ds: 0018   es: 0018   ss: 0018
Jun 18 09:22:39 ena kernel: Process rsync (pid: 1132,
stackpage=f7815000)
Jun 18 09:22:39 ena kernel: Stack: 00000001 f787a780 c02e4d64 000001ca
00000000 00000000 00000000 0000003a
Jun 18 09:22:39 ena kernel:        f7018150 f88b9295 00000000 f787a780
00000001 00000101 f787a780 c01a69ac
Jun 18 09:22:39 ena kernel:        c02e4d64 00000000 f787a780 00000002
00000000 fe3af000 f7815e64 c01a6a6f
Jun 18 09:22:39 ena kernel: Call Trace: [<f88b9295>]
[disk_change+364/604] [disk_change+559/604] [brw_page+31/164]
[show_swap_cache_info+51
/52]
Jun 18 09:22:39 ena kernel: Code: f3 a5 f6 c3 02 74 02 66 a5 f6 c3 01 74

01 a4 83 7c 24 28 00

Trace; f88b9295 <[rd]rd_make_request+3d/68>

Code; f88b920f <[rd]rd_blkdev_pagecache_IO+ff/148>
00000000 <_EIP>:
Code; f88b920f <[rd]rd_blkdev_pagecache_IO+ff/148> <=====
0: f3 a5 repz movsl %ds:(%esi),%es:(%edi)
<=====
Code; f88b9211 <[rd]rd_blkdev_pagecache_IO+101/148>
2: f6 c3 02 test $0x2,%bl
Code; f88b9214 <[rd]rd_blkdev_pagecache_IO+104/148>
5: 74 02 je 9 <_EIP+0x9> f88b9218
<[rd]rd_blkdev_pagecache_IO+108/148>
Code; f88b9216 <[rd]rd_blkdev_pagecache_IO+106/148>
7: 66 a5 movsw %ds:(%esi),%es:(%edi)
Code; f88b9218 <[rd]rd_blkdev_pagecache_IO+108/148>
9: f6 c3 01 test $0x1,%bl
Code; f88b921b <[rd]rd_blkdev_pagecache_IO+10b/148>
c: 74 01 je f <_EIP+0xf> f88b921e
<[rd]rd_blkdev_pagecache_IO+10e/148>
Code; f88b921d <[rd]rd_blkdev_pagecache_IO+10d/148>
e: a4 movsb %ds:(%esi),%es:(%edi)
Code; f88b921e <[rd]rd_blkdev_pagecache_IO+10e/148>
f: 83 7c 24 28 00 cmpl $0x0,0x28(%esp,1)
---------------------------end rsync------------------------------------

if someone here know`s what could be my problem please let me know.

Thanks

Samo Gabrovec.