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Bug#312646: marked as done (kernel-source-2.4.27: kernel locks up hard when do a "grep -r <some-string> *" at root(/))



Your message dated Sun, 19 Jun 2005 21:08:56 +0200
with message-id <20050619190856.GA29912@sputnik.stro.at>
and subject line Bug#312646: kernel-source-2.4.27: kernel locks up hard when do a "grep -r <some-string> *" at root(/)
has caused the attached Bug report to be marked as done.

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Received: (at submit) by bugs.debian.org; 9 Jun 2005 11:25:22 +0000
>From claytonk@hotpop.com Thu Jun 09 04:25:22 2005
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From: clayton <claytonk@hotpop.com>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: kernel-source-2.4.27: kernel locks up hard when do a "grep -r <some-string>
 *" at root(/)
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Date: Thu, 09 Jun 2005 19:23:01 +0800
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Package: kernel-source-2.4.27
Version: 2.4.27-10
Severity: normal


While logged in as root, cd to /, three successive attempts to
"grep -r <some-string) *" resulted in my system being completed locked
up with no keyboard, mouse, or network response (ie. could not login
over network). Forced to remove power and reboot.

I am running with a custom kernel, would be happy to provide any other
information for debugging.

-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (990, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.4.27-a21m.2
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)

Versions of packages kernel-source-2.4.27 depends on:
ii  binutils                      2.15-6     The GNU assembler, linker and bina
ii  bzip2                         1.0.2-7    high-quality block-sorting file co
ii  coreutils [fileutils]         5.2.1-2    The GNU core utilities
ii  fileutils                     5.2.1-2    The GNU file management utilities 

-- no debconf information


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>From max@stro.at Sun Jun 19 12:08:29 2005
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Date: Sun, 19 Jun 2005 21:08:56 +0200
From: maximilian attems <debian@sternwelten.at>
To: 312646-done@bugs.debian.org
Subject: Re: Bug#312646: kernel-source-2.4.27: kernel locks up hard when do a "grep -r <some-string> *" at root(/)
Message-ID: <20050619190856.GA29912@sputnik.stro.at>
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On Sun, 12 Jun 2005, claytonk@163.com wrote:

> maks, it seems to be the /dev directory that is causing the problem, "grep -r string /dev" causes the lockup, and the last thing I see is "grep: dev/kmem: Bad address"
> 
> clayton
> 

20:33 <hch> makx: doing random reads on /dev/mem for example is an easy
way to crash a box

so one better not grep it's dev tree as root.

--
maks



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