linux-kernel - Re: 2.6.19 file content corruption on ext3

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Date:	Thu, 21 Dec 2006 12:40:03 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Linus Torvalds <torvalds@...l.org>,
	Nick Piggin <nickpiggin@...oo.com.au>, andrei.popa@...eo.ro,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Hugh Dickins <hugh@...itas.com>,
	Florian Weimer <fw@...eb.enyo.de>,
	Marc Haber <mh+linux-kernel@...schlus.de>,
	Martin Michlmayr <tbm@...ius.com>
Subject: Re: 2.6.19 file content corruption on ext3

On Thu, 21 Dec 2006 14:03:20 +0100
Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> On Tue, 2006-12-19 at 09:43 -0800, Linus Torvalds wrote:
> > 
> > Btw,
> >  here's a totally new tangent on this: it's possible that user code is 
> > simply BUGGY. 
> 
> depmod: BADNESS: written outside isize 22183

akpm:/usr/src/module-init-tools-3.3-pre1> grep -r mmap .
./zlibsupport.c:        map = mmap(0, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);

So presumably it's in a library.

akpm:/usr/src/25> ldd /sbin/depmod
        linux-gate.so.1 =>  (0xffffe000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0x46afa000)
        /lib/ld-linux.so.2 (0x4631d000)

worrisome.
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