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| warezio |
 Posted: Tue Jan 22, 2008 10:57 pm |
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User
Joined: 05 May 2007
Posts: 107
Location: Yahoo
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Interestingly enough, removing either the first or last character from this binary eliminates the problem.
Cheers,
-- p
-------
37> zlib:unzip (zlib:zip (<<"<?xml version=\"1.0\"?><Tags><DistinctTags>27</DistinctTags><DistinctItems>1</DistinctItems><DistinctUsers>48</DistinctUsers><TotalUsages>80</TotalUsages><FirstTagging><Name>battery</Name><EntityId>B000B6MLSC</EntityId><UserId>A2NNNAUZZIIVC6</UserId><Time>2005-11-29 14:36:26</Time></FirstTagging><LastTagging><Name>xbox 360 accessory</Name><EntityId>B000B6MLSC</EntityId><UserId>A3R2YUWPTEGASY</UserId><Time>2008-01-18 17:17:45</Time></LastTagging><Tag><Name>xbox 360</Name><TagType>Items</TagType><DistinctItems>1</DistinctItems><DistinctUsers>24</DistinctUsers><TotalUsages>24</TotalUsages><FirstTagging><EntityId>B000B6MLSC</EntityId><UserId>A3L6JBR3XAO9L5</UserId><Time>2006-08-29 17:32:38</Time></FirstTagging><LastTagging><EntityId>B000B6MLSC</EntityId><UserId>A3R2YUWPTEGASY</UserId><Time>2008-01-18 17:17:25</Time></LastTagging></Tag><Tag><Name>battery pack</Name><TagType>Items</TagType><DistinctItems>1</DistinctItems><DistinctUsers>13</DistinctUser!
s><TotalUsages>13</TotalUsages><FirstTagging><EntityId>B000B6MLSC</EntityId><UserId>A2XQT4U37YFO40</UserId><Time>2005-12-29 20:10:36</Time></FirstTagging><LastTagging><EntityId>B000B6MLSC</EntityId><UserId>A19EPX5X6LRPPB</UserId><Time>2007-12-28 16:38:36</Time></LastTagging></Tag><Tag><Name>xbox 360 accessory</Name><TagType>Items</TagType><DistinctItems>1</DistinctItems><DistinctUsers>9</DistinctUsers><TotalUsages>9</TotalUsages><FirstTagging><EntityId>B000B6MLSC</EntityId><UserId>A37IUBFAP495XQ</UserId><Time>2007-01-21 14:38:12</Time></FirstTagging><LastTagging><EntityId>B000B6MLSC</EntityId><UserId>A3R2YUWPTEGASY</UserId><Time>2008-01-18 17:17:45</Time></LastTagging></Tag><Tag><Name>battery</Name><TagType>Items</TagType><DistinctItems>1</DistinctItems><DistinctUsers>5</DistinctUsers><TotalUsages>5</TotalUsages><FirstTagging><EntityId>B000B6MLSC</EntityId><UserId>A2NNNAUZZIIVC6</UserId><Time>2005-11-29 14:36:26</Time></FirstTagging><LastTagging><EntityId>B000B6MLSC</Entity!
Id><UserId>A3R2CSI4NSJCCV</UserId><Time>2007-08-05 22:22:28</Time></La
stTagging></Tag><Tag><Name>rechargeable battery</Name><TagType>Items</TagType><DistinctItems>1</DistinctItems><DistinctUsers>4</DistinctUsers><TotalUsages>4</TotalUsages><FirstTagging><EntityId>B000B6MLSC</EntityId><UserId>A368EJ0XEL1PRV</UserId><Time>2006-12-05 20:15:58</Time></FirstTagging><LastTagging><EntityId>B000B6MLSC</EntityId><UserId>A3R2YUWPTEGASY</UserId><Time>2008-01-18 17:17:19</Time></LastTagging></Tag></Tags>">>)).
=ERROR REPORT==== 22-Jan-2008::14:53:52 ===
Error in process <0.196.0> with exit value: {data_error,[{zlib,call,3},{zlib,unzip,1},{erl_eval,do_apply,5},{shell,exprs,6},{shell,eval_loop,3}]}
** exited: {data_error,[{zlib,call,3},
{zlib,unzip,1},
{erl_eval,do_apply,5},
{shell,exprs,6},
{shell,eval_loop,3}]} **
38> zlib:module_info ().
[{exports,[{open,0},
{close,1},
{deflateInit,1},
{deflateInit,2},
{deflateInit,6},
{deflateSetDictionary,2},
{deflateReset,1},
{deflateParams,3},
{deflate,2},
{deflate,3},
{deflateEnd,1},
{inflateInit,1},
{inflateInit,2},
{inflateSetDictionary,2},
{inflateSync,1},
{inflateReset,1},
{inflate,2},
{inflateEnd,1},
{setBufSize,2},
{getBufSize,1},
{crc32,1},
{crc32,2},
{crc32,3},
{adler32,2},
{adler32|...},
{...}|...]},
{imports,[]},
{attributes,[{vsn,[235850242155034454638676172994528236350]}]},
{compile,[{options,[{cwd,"/build/buildd/erlang-11.b.2/lib/kernel/src"},
{outdir,"/build/buildd/erlang-11.b.2/lib/kernel/src/../ebin"},
{i,"/build/buildd/erlang-11.b.2/lib/kernel/src/../include"},
debug_info]},
{version,"4.4.2"},
{time,{2007,1,23,12,4,54}},
{source,"/build/buildd/erlang-11.b.2/lib/kernel/src/zlib.erl"}]}]
--------
Optimism is an essential ingredient of innovation. How else can the
individual favor change over security?
-- Robert Noyce
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| mdempsky |
| Posted: Wed Jan 23, 2008 5:15 am |
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Joined: 24 Sep 2007
Posts: 118
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On 1/22/08, Paul Mineiro <paul-trapexit@mineiro.com> wrote:
> Interestingly enough, removing either the first or last character from this binary eliminates the problem.
I can't reproduce this with either R11B-5 or R12B-0, but I suspect the
word wrapping is at fault. Can you send this binary again, but using
the output from io:write/1?
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| warezio |
| Posted: Wed Jan 23, 2008 6:14 pm |
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Joined: 05 May 2007
Posts: 107
Location: Yahoo
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Gentlemen,
I can only reproduce this on a feisty box running 11b-2 (my bad, didn't
notice the version difference at first). My mac has 11b-5 and doesn't have
the problem.
However, the problem under 11b-2 is data dependent so it's possible that
it still exists under 11b-5 and we just don't know how to tickle it. Do
you have an 11b-2 setup you can fire up to investigate?
I've attached a file called "mega" with the bad data in it to
disambiguate.
Thanks,
-- p
3> [ zlib:unzip (zlib:zip (Bin)) || { ok, Bin } <- [ file:read_file ("mega") ] ].
=ERROR REPORT==== 23-Jan-2008::10:04:42 ===
Error in process <0.32.0> with exit value: {data_error,[{zlib,call,3},{zlib,unzip,1},{erl_eval,do_apply,5},{erl_eval,eval_lc1,5},{lists,flatmap,2},{erl_eval,eval_lc,6},{shell,exprs,6},{shell,eval_loop,3}]}
** exited: {data_error,[{zlib,call,3},
{zlib,unzip,1},
{erl_eval,do_apply,5},
{erl_eval,eval_lc1,5},
{lists,flatmap,2},
{erl_eval,eval_lc,6},
{shell,exprs,6},
{shell,eval_loop,3}]} **
4> [ Compile || { compile, Compile } <- zlib:module_info () ].
[[{options,[{cwd,"/build/buildd/erlang-11.b.2/lib/kernel/src"},
{outdir,"/build/buildd/erlang-11.b.2/lib/kernel/src/../ebin"},
{i,"/build/buildd/erlang-11.b.2/lib/kernel/src/../include"},
debug_info]},
{version,"4.4.2"},
{time,{2007,1,23,12,4,54}},
{source,"/build/buildd/erlang-11.b.2/lib/kernel/src/zlib.erl"}]]
On Wed, 23 Jan 2008, Matthias Lang wrote:
> Matthew Dempsky writes:
> > On 1/22/08, Paul Mineiro <paul-trapexit@mineiro.com> wrote:
> > > Interestingly enough, removing either the first or last character from this binary eliminates the problem.
> >
> > I can't reproduce this with either R11B-5 or R12B-0, but I suspect the
> > word wrapping is at fault. Can you send this binary again, but using
> > the output from io:write/1?
>
> I can't reproduce it either, but I took some guesses about what the
> input data was (it got wrapped).
>
> Matthias
>
Optimism is an essential ingredient of innovation. How else can the
individual favor change over security?
-- Robert Noyce
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| Guest |
| Posted: Wed Jan 23, 2008 9:57 pm |
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Guest
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Paul Mineiro writes:
> I can only reproduce this on a feisty box running 11b-2 (my bad, didn't
> notice the version difference at first). My mac has 11b-5 and doesn't have
> the problem.
> However, the problem under 11b-2 is data dependent so it's possible that
> it still exists under 11b-5 and we just don't know how to tickle it. Do
> you have an 11b-2 setup you can fire up to investigate?
It fails for me too on R11B-2 compiled from source on an x86 Debian
box (see below).
It works for R11B-4 and R11B-5.
>From the R11B-3 release notes:
OTP-6394 The version of zlib (http://zlib.net) linked into run-time
system has been updated to version 1.2.3.
It looks like R11B-2 uses zlib 1.1.4.
I had a bit of a go at debugging but lost interest. Basically I tried
to show that using zlib 1.1.4 directly would also fail to decompress
the data. But I failed to do that, which may be because it's late, or
because the problem is more subtle.
Matt
----------------------------------------------------------------------
tmp >/usr/local/src/otp_src_R11B-2/bin/erl
Erlang (BEAM) emulator version 5.5.2 [source] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.5.2 (abort with ^G)
1> [ zlib:unzip (zlib:zip (Bin)) || { ok, Bin } <- [ file:read_file ("mega") ] ].
** exited: {data_error,[{zlib,call,3},
{zlib,unzip,1},
{erl_eval,do_apply,5},
{erl_eval,eval_lc1,5},
{lists,flatmap,2},
{erl_eval,eval_lc,6},
{shell,exprs,6},
{shell,eval_loop,3}]} **
=ERROR REPORT==== 23-Jan-2008::22:10:11 ===
Error in process <0.30.0> with exit value: {data_error,[{zlib,call,3},{zlib,unzip,1},{erl_eval,do_apply,5},{erl_eval,eval_lc1,5},{lists,flatmap,2},{erl_eval,eval_lc,6},{shell,exprs,6},{shell,eval_loop,3}]}
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