linux-kernel - Re: BUG: Bad rss-counter state

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Date:	Mon, 9 Apr 2012 07:58:14 +0200
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	Hugh Dickins <hughd@...gle.com>
Subject: Re: BUG: Bad rss-counter state

On 2012.04.08 at 13:39 +0200, Markus Trippelsdorf wrote:
> I've hit the following warning after I've tried to link Firofox's libxul
> with "-flto -lto-partition=none" on my machine with 8GB memory. I've
> killed the process after it used all the memory and 90% of my swap
> space. Before the machine was rebooted I saw these messages:
> 
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020813c380 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020813c380 idx:2 val:1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88021503bb80 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff8801fb643b80 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff8801fb643b80 idx:2 val:1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88021503bb80 idx:2 val:1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020a4ff800 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020a4ff800 idx:2 val:1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020813ce00 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff88020813ce00 idx:2 val:1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff8801fadda680 idx:1 val:-1
> Apr  8 13:11:08 x4 kernel: BUG: Bad rss-counter state mm:ffff8801fadda680 idx:2 val:1

BTW, I'm not the only one that sees these messages. Here are two more
reports from Ubuntu beta testers:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/963672
BUG: Bad rss-counter state mm:ffff88022107fb80 idx:1 val:-14
BUG: Bad rss-counter state mm:ffff88022107fb80 idx:2 val:14


https://bugs.launchpad.net/ubuntu/+source/linux/+bug/965709
BUG: Bad rss-counter state mm:c8fd9dc0 idx:1 val:-2
BUG: Bad rss-counter state mm:c8fd9dc0 idx:2 val:2
usb 5-1: USB disconnect, device number 2
usb 5-1: new low-speed USB device number 3 using uhci_hcd
input: Mega World Thrustmaster dual analog 3.2 as
/devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.0/input/input13
generic-usb 0003:044F:B315.0004: input,hidraw1: USB HID v1.10 Gamepad
[Mega World Thrustmaster dual analog 3.2] on usb-0000:00:1d.0-1/input0
BUG: Bad rss-counter state mm:c8fd9dc0 idx:1 val:-2
BUG: Bad rss-counter state mm:c8fd9dc0 idx:2 val:2
BUG: Bad rss-counter state mm:dea3cc40 idx:1 val:-1
BUG: Bad rss-counter state mm:dea3cc40 idx:2 val:1

The pattern seem to be:
... idx:1 val:-x
... idx:2 val:x
for x=1,2,14

-- 
Markus
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