From: Andrew Cooper <andrew.cooper3@citrix•com>
To: Zoltan Kiss <zoltan.kiss@citrix•com>, Michael Chan <mchan@broadcom•com>
Cc: linux-kernel@vger•kernel.org, Carolyn, Tushar,
e1000-devel@lists•sourceforge.net,
Bruce Allan <bruce.w.allan@intel•com>,
Jesse Brandeburg <jesse.brandeburg@intel•com>,
"David S. Miller" <davem@davemloft•net>,
John Ronciak <john.ronciak@intel•com>,
"netdev@vger•kernel.org" <netdev@vger•kernel.org>,
"xen-devel@lists•xenproject.org" <xen-devel@lists•xenproject.org>
Subject: Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer
Date: Wed, 5 Feb 2014 20:43:46 +0000 [thread overview]
Message-ID: <52F2A282.5040502@citrix.com> (raw)
In-Reply-To: <52F29DDC.7010908@citrix.com>
On 05/02/2014 20:23, Zoltan Kiss wrote:
> On 04/02/14 19:47, Michael Chan wrote:
>> On Fri, 2014-01-31 at 14:29 +0100, Zoltan Kiss wrote:
>>> [ 5417.275472] WARNING: at net/sched/sch_generic.c:255
>>> dev_watchdog+0x156/0x1f0()
>>> [ 5417.275474] NETDEV WATCHDOG: eth1 (bnx2): transmit queue 2 timed out
>>
>> The dump shows an internal IRQ pending on MSIX vector 2 which matches
>> the the queue number that is timing out. I don't know what happened to
>> the MSIX and why the driver is not seeing it. Do you see an IRQ error
>> message from the kernel a few seconds before the tx timeout message?
>
> I haven't seen any IRQ related error message. Note, this is on Xen
> 4.3.1. Now I have new results with a reworked version of the patch,
> unfortunately it still has this issue. Here is a bnx2 dump, lspci
> output and some Xen debug output (MSI and interrupt bindings, I have
> more if needed).
You need debug-keys 'Q' as well to map between the PCI devices and Xen IRQs
~Andrew
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next prev parent reply other threads:[~2014-02-05 20:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-30 19:08 igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer Zoltan Kiss
2014-01-30 20:34 ` Michael Chan
2014-01-31 13:29 ` Zoltan Kiss
2014-02-04 19:47 ` Michael Chan
2014-02-05 20:23 ` Zoltan Kiss
2014-02-05 20:27 ` Zoltan Kiss
2014-02-05 20:43 ` Andrew Cooper [this message]
2014-02-06 9:58 ` Zoltan Kiss
2014-01-31 18:56 ` Wei Liu
2014-02-04 21:32 ` Zoltan Kiss
2014-02-12 17:13 ` Zoltan Kiss
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