Re: problems with syskonnect card with 2.4.23-pre kernels (fwd)

From: Chuck Lever
Date: Mon Nov 17 2003 - 12:32:28 EST

originally i sent these to mirko without looking at the MAINTAINERS file.
mea culpa.

---------- Forwarded message ----------
Date: Fri, 14 Nov 2003 18:39:51 -0500 (EST)
From: Chuck Lever <cel@xxxxxxxxxxxxxx>
To: mlindner@xxxxxxxxxxxxx
Subject: Re: problems with syskonnect card with 2.4.23-pre kernels

another couple of data points:

i've pulled changesets 1.1148.17.2, 1.1120.11.16, 1.1120.11.15, and
1.1063.2.72 off of 2.4.23-pre9, and i am no longer able to reproduce the
crashes on one of my SysKonnect-attached systems (haven't tried the other
one yet).

this system is running fedora core 1. the 2.4.22-blah kernel that
comes with fedora is using v6.15 of the sk98lin driver without
difficulties, btw.

On Fri, 14 Nov 2003, Chuck Lever wrote:

> hi-
> i have two SMP systems with Syskonnect GbE cards (other similar systems
> also with NetGear, etc, do not see these problems).
> after upgrading these to 2.4.23-pre9, the Syskonnect systems crash after a
> little bit of network activity (incoming sshd connections, outgoing
> telnet, and so on, but not NFS client activity, oddly).
> there is an oops first, at the skbuff.c:92 BUG(), then the system panics.
> i'm still trying to capture more information about the problem, but the
> oops and panic do not leave kernel log trails, and the panic prevents
> console scrollback. maybe serial console is the next step.
> i suspect the sk98lin driver because a) it changed in 2.4.23-pre3 and
> -pre7, and b) the other systems are almost identical except for their
> NICs, and do not exhibit this problem.
> any specific advice about how to debug this, or have you already seen this
> problem?
> card info from lspci -v:
> 01:02.0 Ethernet controller: Syskonnect (Schneider & Koch) Gigabit
> Ethernet (rev 13)
> Subsystem: Syskonnect (Schneider & Koch) SK-9821 (1000Base-T
> single link)
> Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 27
> Memory at febfc000 (32-bit, non-prefetchable) [size=16K]
> I/O ports at e800 [size=256]
> Expansion ROM at febc0000 [disabled] [size=128K]
> Capabilities: [48] Power Management version 1
> Capabilities: [50] Vital Product Data
> the systems are dual P-III systems using serverworks LE and HE chipsets.
> one has 1GB of memory, the other 256MB of memory.
> - Chuck Lever
> --
> corporate: <cel at netapp dot com>
> personal: <chucklever at bigfoot dot com>

- Chuck Lever
corporate: <cel at netapp dot com>
personal: <chucklever at bigfoot dot com>

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