linux-kernel - Re: [Bug 60555] New: Some amount of ifconfig cause load average increase and system freeze

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Message-ID: <CAErSpo7nyyfZ8n97hyjkmzfCcPBVFTid0BrVXLwiBA0YhkdREA@mail.gmail.com>
Date:	Fri, 11 Oct 2013 17:15:40 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Yaroslav Molochko <onorua@...il.com>
Cc:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Bug 60555] New: Some amount of ifconfig cause load average
 increase and system freeze

On Tue, Sep 10, 2013 at 3:04 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> [+cc Thomas, e1000e driver folks, linux-pci, lkml]
>
> On Mon, Jul 15, 2013 at 2:31 AM,  <bugzilla-daemon@...zilla.kernel.org> wrote:
>> https://bugzilla.kernel.org/show_bug.cgi?id=60555
>>
>>             Bug ID: 60555
>>            Summary: Some amount of ifconfig cause load average increase
>>                     and system freeze
>>            Product: Drivers
>>            Version: 2.5
>>     Kernel Version: 3.10.0
>>           Hardware: All
>>                 OS: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: PCI
>>           Assignee: drivers_pci@...nel-bugs.osdl.org
>>           Reporter: onorua@...il.com
>>         Regression: No
>>
>> I've faced with the situation when system stopped to process any request.
>> Further analysis showed that the load average was around 20, and was constantly
>> increasing (the normal LA for this system is 0.3-1).
>
> Thanks for the report; sorry it fell through the cracks.
>
> Is this problem reproducible?  If so, can you try to reproduce it on
> v3.11?  Can you please attach a complete dmesg log and "lspci -vv" (as
> root) output to the bugzilla?
>
> The BUG_ON you're hitting is here, but I don't know what it means:
>
>     #ifdef CONFIG_GENERIC_HARDIRQS
>                 for (i = 0; i < nvec; i++)
>                         BUG_ON(irq_has_action(entry->irq + i));
>     #endif

What's the status of this?  Is it still a problem?  Should we just
close the bug as unreproducible?

Bjorn
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