linux-kernel - Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

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Date:	Thu, 11 Oct 2007 20:32:07 +1000
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	"Mr. Berkley Shands" <bshands@...gy.com>,
	Ayaz Abdulla <aabdulla@...dia.com>,
	linux-netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

On Friday 12 October 2007 02:23, Mr. Berkley Shands wrote:
> With DEBUG_SLAB on, I can run only a very short time under 2.6.23
> before a kernel panic.
>
> [  626.028180] eth0: too many iterations (6) in nv_nic_irq.
> [  626.167583] eth0: too many iterations (6) in nv_nic_irq.
> [  626.206729] eth0: too many iterations (6) in nv_nic_irq.
> [  626.400171] eth0: too many iterations (6) in nv_nic_irq.
> [  626.446374] eth0: too many iterations (6) in nv_nic_irq.
>
> followed by the crash at
> forcedeth:nv_nic_irq_optimized+0x89
> handle_IRQ_event+0x25
> handle_edge_IRQ+0xe3
> do_IRQ

OK, thanks. Probably we should try to fix this problem before
attempting the more elusive looking corruption.

CC'ed forcedeth maintainer and netdev.

Can you reiterate what your hardware is (including lspci)?
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