maybe this is a simple "don't do such things":
While doing:
rsh klimt cat /dev/kmem >/dev/null
from another linux machine the following appeared in the syslog of klimt:
Unable to handle kernel paging request at virtual address c4805000
current->tss.cr3 = 03c0c000, `r3 = 03c0c000
*pde = 00001067
*pte = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[vread+88/124]
EFLAGS: 00010206
eax: 00005000 ebx: 04805000 ecx: 00001fff edx: 04805000
esi: 08002b30 edi: 00001000 ebp: 0009e038 esp: 03c0df54
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process cat (pid: 1735, process nr: 55, stackpage=03c0d000)
Stack: 00000000 007f0330 00001000 08002b30 08002b30 001704be 08002b30 04805000
00001000 00000000 007f0330 00001000 028abb00 00000000 028abb00 08002b30
00122d3c 028abb00 007f0330 08002b30 00001000 03285018 08002b30 00000007
Call Trace: [read_kmem+86/128] [eepro100:eepro100_init+-65540/8160]
[sys_read+192/232] [system_call+82/120]
Code: 0f be 13 89 f0 46 43 64 88 10 4f 49 79 ee 8b 6d 0c 85 ed 75
Ethernet is:
eepro100.c:v0.36 10/20/97 Donald Becker linux-eepro100@cesdis.gsfc.nasa.gov
eth0: Intel EtherExpress Pro 10/100 at 0xe000, 00:AA:00:AD:14:1B, IRQ 12.
Board assembly 352509-003, Physical connectors present: RJ45
Primary interface chip DP83840 PHY #1.
DP83840 specific setup, setting register 23 to 8462.
Forcing 100Mbs full-duplex operation.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x49caa8d6).
Receiver lock-up workaround activated.
Thanks for any help.
Hermann