linux-kernel - Re: 2.6.27 inotify causes unkillable processes with 100% CPU usage

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Message-ID: <20081215120512.GT28946@ZenIV.linux.org.uk>
Date:	Mon, 15 Dec 2008 12:05:12 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Timo Sirainen <tss@....fi>
Cc:	linux-kernel@...r.kernel.org, nuitari-dovecot@...tari.net,
	Arno Wald <arno.wald@...cologne.de>,
	David Rosenstrauch <darose@...ose.net>
Subject: Re: 2.6.27 inotify causes unkillable processes with 100% CPU usage

On Mon, Dec 15, 2008 at 01:31:29PM +0200, Timo Sirainen wrote:
> There appears to be a bug in 2.6.27 and inotify where it causes processes 
> in running state to eat 100% CPU and they can't be killed with kill -9, 
> requiring a reboot to get rid of them.

> Kernels causing the hang:
>
> 2.6.27-9.slh.1-sidux-686
> Arch Linux, kernel 2.6.27.8
> Gentoo with 2.6.27-gentoo-r5, amd64, 2 dual core opterons
>
> Not causing the hang:
>
> 2.6.26-6.slh.1-sidux-686

Could you try to bisect that?  Particulary interesting commits:

8f7b0ba1c853919b85b54774775f567f30006107
6ff2d39b91aec3dcae951afa982059e3dd9b49dc
711a49a07f84f914aac26a52143f6e7526571143
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