On Thu, Feb 24, 2000 at 11:19:23PM -0800, Andre Hedrick wrote:
> > Hard crashes of system related to tcp_keepalive
> >
> > [2.] Full description of the problem/report:
> >
> > The following frozen screen occurring between once a week and once a
> > day (with only the most minor differences, has appeared running kernels
> > 1.2.13, 1.2.14 and now 1.2.15pre9, through replacement of the memory,
> > motherboard, CPU, brand of NICs, video card, and drive cables (what's
> > constant now is the Tekram DC-390F SCSI controller, the IBM HD, a
> > Western Digital HD used for /boot and swap, and the case and power supply):
>
> Kurt Garloff can comment on the "Tekram DC-390F SCSI controller" and
> remove that from the things in question.
OK. Tekram DC390F is a ncr53c875 based UW SCSI host adapter. Can be driven
by either ncr53c8xx or sym53c8xx (or even a solution of Tekram: tmscsiw, but
I don't recommend that). Those drivers are known to work quite well.
The only trouble reported so far seems to be that the driver in very special
circumstances does not report a unit attention for unknown reasons (and the
driver may be completely irresponsible for it), so that a disk change
(applies to removable disks, obviously) is not getting known to the kernel.
> > >>EIP: c0177d5c <tcp_keepalive+e0/180>
> > Trace: c01780e6 <tcp_sltimer_handler+32/70>
> > Trace: c01780b4 <tcp_sltimer_handler+0/70>
> > Trace: c0111271 <timer_bh+331/388>
> > Trace: c0117991 <do_bottom_half+45/64>
> > Trace: c0106000 <get_options+0/74>
> > Code: c0177d5c <tcp_keepalive+e0/180> 00000000 <_EIP>: <===
> > Code: c0177d5c <tcp_keepalive+e0/180> 0: 8b 40 50 mov 0x50(%eax),%eax <===
.. and this points to trouble in the network stack.
-- Kurt Garloff <garloff@suse.de> Eindhoven, NL GPG key: See mail header, key servers Linux kernel development SuSE GmbH, Nuernberg, FRG SCSI, Security
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