linux-kernel - Re: 2.6.23-rc1-mm1: reiser4 <-> lzo compile error

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Message-ID: <46A9E691.5080308@namesys.com>
Date:	Fri, 27 Jul 2007 16:35:29 +0400
From:	Edward Shishkin <edward@...esys.com>
To:	Adrian Bunk <bunk@...sta.de>,
	Nitin Gupta <nitingupta910@...il.com>,
	Richard Purdie <rpurdie@...nedhand.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, reiserfs-devel@...r.kernel.org
Subject: Re: 2.6.23-rc1-mm1: reiser4 <-> lzo compile error

Adrian Bunk wrote:

><--  snip  -->
>
>...
>  LD      .tmp_vmlinux1
>lib/built-in.o: In function `lzo1x_1_compress':
>(.text+0x13eae): multiple definition of `lzo1x_1_compress'
>fs/built-in.o:(.text+0x117075): first defined here
>make[1]: *** [.tmp_vmlinux1] Error 1
>
><--  snip  -->
>
>AFAIR, we once had a patch in -mm changing reiser4 to use the
>LZO code that is now in the kernel?
>
>cu
>Adrian
>
>  
>
Sorry, guys, I am not happy with the modified LZO:
the compressor tries to test bytes which are out of bounds.

The attached module testlzo.c causes an oops in the second pass:
AFAIK, both, @m and @m_pos should be in [wrkmem, wrkmem + 64K);
I have attached trace.txt with their actual values.

Not ready to migrate to this library.

Any ideas?

Thanks,
Edward.

P.S.
kernel: 2.6.23-rc1-mm1
box: x86

View attachment "testlzo.c" of type "text/x-csrc" (1272 bytes)

View attachment "trace.txt" of type "text/plain" (469 bytes)