Re: [2.6.0-test-9] natsemi oops

[netdev added to cc list: it looks like a module refcount bug with ipx]

David Liontooth wrote:

The natsemi oops is triggered in 2.6.0-test9 too.

kernel BUG at include/linux/module.h:296
 

That's BUG_ON(module_refcount(module) == 0) in __module_get. I doubt that the natsemi driver has anything to do with the bug, it looks like a bug in the ipx core.

Everything freezes.

Am I the only one to get this?

I don't know when it started, but 2.5.69 has no problems.
 

My guess: 2.5.69 has no bug check. It will oops with the right timing of rmmod and a packet arrival.

Cheers,
David


----- Original Message -----
From: "David Liontooth" <redacted>
Date: Mon, 20 Oct 2003 21:05:13 -0500
To: linux-kernel@vger.kernel.org
Subject: Re: [2.6.0-test-7] natsemi oops

 

quoted

Correction: I get the oops also when natsemi is compiled as a module. It is triggered not when the module is loaded, but when it is used the first time. Oops (some fragments below) followed by a total freeze;
nothing gets logged.

Is this a known problem?

Is there a workaround?

Cheers,
David


----- Original Message -----
From: David Liontooth
Date: Mon, 20 Oct 2003 05:24:52 -0500
To: linux-kernel@vger.kernel.org
Subject: [2.6.0-test-7] natsemi oops

   

quoted

The 2.6.0-test-7 boots fine and works great -- until I plug
in the ethernet cable. Within a second I get an oops and
everything freezes. Booting with "acpi=off" makes no difference.
If I boot with the ethernet cable plugged in, I get to the login prompt, and it oopses within a second. If I time it right,
I can log into the machine remotely for one second before it oopses (so the natsemi driver is working). Very reproducible! /proc/kmsg is empty.

If I compile natsemi as a module, I don't get the oops. However, now the driver is not working -- I can't ping out.
Everything works fine in 2.5.69, which I've been running
since early July.

Here's some of the oops, taken by hand:

Process swapper (pid: 0, threadinfo=c042a000 task c03a47a0)

Stack

Call trace:

ipxitf_auto_create
ipx_rcv
netif_receive_skb
process_backlog
net_rx_action
do_softirq
do_IRQ
_stext
common_interrupt
acpi_processor_idle
cpu_idle
start_kernel
unknown_bootoption

Kernel panic: Fatal exception in interrupt
In interrupt handler -- not syncing

Configuration, lspci, and dmesg attached.

Cheers,
David



     

<< config-2.6.0-test7-3 >>
<< dmesg-2.6.0-test7-7 >>
<< lspci-2.6.0-test7 >>

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