The system is basically Redhat 6.0, with a custom-compiled 2.2.14 kernel
(and 2.2.13 before that) which is crashing hard several times a week with a
screen like:
Unable to handle kernel NULL pointer dereference at
virtual address 00000050
current -> tss.cr3 = 00101000, %cr3=001010000
* pde - 00000000
Oops: 0000
CPU: 0
EIP: 0010 [<c0177ac0>]
EFLAGS: 000010286
etc.
when I do a "nm vmlinux | sort > file" it looks like that EIP is pointing
to "c01779e0 t tcp_keepalive"
ksymoops also says: "EIP: c0177ac0 <tcp_keepalive+e0/180>"
(Sorry I didn't copy the full screen on the crash - was in a rush to
restore service.)
The hardware: AMD K6 233, two Linksys 10/100 NICs using the
Linksys-patched tulip driver (distributed from their Website; the version
with the kernel doesn't support the "wake on LAN" Linksys cards - which
are the only kind they seem to sell now), a Tekram DC-390F SCSI card - and
it's not the motherboard or the RAM at fault because I already swapped
both of those with no effect on the crashes.
The system is running with ipchains firewall/masquerading, Apache and
Proftpd as the major functions - a firewall/server.
Any hints on how to fix or avoid this will be much appreciated.
Whit
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This archive was generated by hypermail 2b29 : Wed Feb 23 2000 - 21:00:22 EST