netdev - Re: am335x: cpsw: interrupt failure

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Date:	Thu, 4 Dec 2014 10:56:09 -0600
From:	Felipe Balbi <balbi@...com>
To:	Yegor Yefremov <yegorslists@...glemail.com>
CC:	netdev <netdev@...r.kernel.org>,
	"N, Mugunthan V" <mugunthanvnm@...com>, Felipe Balbi <balbi@...com>
Subject: Re: am335x: cpsw: interrupt failure

Hi,

On Thu, Dec 04, 2014 at 05:41:38PM +0100, Yegor Yefremov wrote:
> I have following problem. My systems reboots at high network load
> after this commit (found via git bissect):
> 
> commit 55601c9f24670ba926ebdd4d712ac3b177232330
> Author: Felipe Balbi <balbi@...com>
> Date:   Mon Sep 8 17:54:58 2014 -0700
> 
>     arm: omap: intc: switch over to linear irq domain
> 
>     now that we don't need to support legacy board-files,
>     we can completely switch over to a linear irq domain
>     and make use of irq_alloc_domain_generic_chips() to
>     allocate all generic irq chips for us.
> 
>     Signed-off-by: Felipe Balbi <balbi@...com>
>     Signed-off-by: Tony Lindgren <tony@...mide.com>
> 
> and I get following error messages:
> 
> irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0

irq 0 ? Weird, that's not a valid IRQ.

> ->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
> ->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
> ->action():   (null)
>    IRQ_NOPROBE set
>  IRQ_NOREQUEST set
> irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
> ->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
> ->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
> ->action():   (null)
>    IRQ_NOPROBE set
>  IRQ_NOREQUEST set
> irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
> ->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
> ->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
> ->action():   (null)
>    IRQ_NOPROBE set
>  IRQ_NOREQUEST set
> irq 0, desc: cf004000, depth: 1, count: 0, unhandled: 0
> ->handle_irq():  c0087fc0, handle_bad_irq+0x0/0x258
> ->irq_data.chip(): c08e7174, no_irq_chip+0x0/0x68
> ->action():   (null)
> 
> My system: am335x with fast ethernet on the first slave and gigabit
> Ethernet on second CPSW slave. This issue occurs, when I ran nuttcp
> with default settings.
> 
> With commit above I can at least see these messages, but 3.18-rc7 for
> example reboots without any messages.
> 
> Any idea?

if you take v3.18-rc7 and just revert that commit, does the problem go
away ?

-- 
balbi

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