linux-kernel - Re: spinlock BUG in qdisc

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Date:	Mon, 24 Mar 2008 14:34:28 +0300
From:	"Khaled Al-Hamwi" <khaled.linux@...il.com>
To:	"David Miller" <davem@...emloft.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: spinlock BUG in qdisc_restart

On Sun, Mar 23, 2008 at 1:10 PM, David Miller <davem@...emloft.net> wrote:
> From: "Khaled Al-Hamwi" <khaled.linux@...il.com>
> Date: Sun, 23 Mar 2008 10:23:20 +0300
>
> > [<c02845af>] netif_receive_skb+0x1fc/0x23e
> > [<e033b560>] MM_IndicateRxPackets+0x2be/0x379 [bcm5700]
> > [<e0342c26>] LM_ServiceInterrupts+0xac/0xc5 [bcm5700]
> > [<e0337768>] bcm5700_interrupt+0x13c/0x2bd [bcm5700]
>
> This backtrace is not from a driver that is in the upstream kernel
> sources.
>
> Please use the supported and upstream "tg3" driver for this hardware.
>
> Thank you.
>

Thank you for your reply.

I need to use the bcm5700 driver. Otherwise, I have to reimplemented
the changes that has been already implemented.

By the way, I found the reason for this bug and fixed it. It was
caused by the scheduling of NET_TX_SOFTIRQ. The conflict happens when
tx softirq is run.
I have already disabled rx softirq as I am processing the packets at
the interrupt level.


Thanks,
Khaled
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