bugmldonkey, a multi-networks file-sharing client - Bugs: bug #17160, Crash when loading text version of...

 
 

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bug #17160: Crash when loading text version of GNU file magic database

Submitter:  Samuel Mimram <smimram>
Submitted:  Thu 20 Jul 2006 11:47:35 AM UTC
 
Category:  Core Severity:  3 - Normal
Item Group:  Segmentation Fault Status:  None
Assigned to:  None Open/Closed:  Open
Release:  2.7.7 Release: 
Operating System:  Linux Binaries Origin:  Debian package
CPU type:  Intel x86

Wed 16 Aug 2006 01:31:28 PM UTC, comment #5: 

Yes, the bug is known, but until now only on Slackware which lacks magic.mgc files.

Debian package has this file, now I do not unterstand why MLDonkey
tries to load /etc/magic first
http://packages.debian.org/stable/libs/libmagic1

spiralvoice <spiralvoice>
Project Administrator
Wed 16 Aug 2006 01:02:39 PM UTC, comment #4: 

FWIW, I found out that this bug had already been reported to ocaml-magic:

http://sourceforge.net/tracker/index.php?func=detail&aid=1514849&group_id=129316&atid=714527

Samuel Mimram <smimram>
Wed 16 Aug 2006 11:29:07 AM UTC, comment #3: 

Hi,

Now the problem also happens to me. I've got the following stacktrace when I run mlnet:

#0  0xa7ce64ee in memset () from /lib/tls/i686/cmov/libc.so.6
#1  0xffffffff in ?? ()
#2  0xa7ed616d in apprentice_file (ms=0x84f6f70, magicp=0xaf892fdc,
    nmagicp=0xaf892fd8, fn=0x84f8b50 "/etc/magic", action=0)
    at apprentice.c:567
#3  0xa7ed7615 in file_apprentice (ms=0x84f6f70, fn=0x84f8b50 "/etc/magic",
    action=0) at apprentice.c:183
#4  0xa7ed56c2 in magic_load (ms=0x84f6f70, magicfile=0x0) at magic.c:156
#5  0x082f40b9 in std::operator+<char, std::char_traits<char>, std::allocator<char> > ()
#6  0x081ea496 in ?? ()
#7  0xa7a8d864 in ?? ()
#8  0xa7a8d864 in ?? ()
#9  0x0812d6c6 in ?? ()
#10 0xaf893088 in ?? ()
#11 0x0812d6a5 in ?? ()
#12 0x084dbfa4 in ?? ()
#13 0x44e2ed79 in ?? ()
#14 0x00000000 in ?? ()

The contents of my /etc/magic file are not customized:

# Magic local data for file(1) command.
# Insert here your local magic data. Format is described in magic(5).

# Objective Caml file types

  1.       string  Caml1999        Objective caml

>8      string  X               exec file
>8      string  I               interface file\ (*.cmi)
>8      string  O               object file\ (*.cmo)
>8      string  A               library file\ (*.cma)
>8      string  Y               native object file\ (*.cmx)
>8      string  Z               native library file\ (*.cmxa)
>9      string  >\0             (Version %3.3s).


I have libmagic1 4.17-3. Feel free to tell me if you need me to do further tests.

PS: I didn't find how to reopen the bug.

Samuel Mimram <smimram>
Thu 20 Jul 2006 12:25:15 PM UTC, comment #2: 

Unfortunately, I cannot reproduce the bug either. I thought that maybe you could neverteless have an idea about what its cause could be...

Samuel Mimram <smimram>
Thu 20 Jul 2006 12:13:58 PM UTC, comment #1: 

Using Debian unstable with latest packages:
ii  libmagic-dev                   4.17-2                         File type determination library (development)
ii  libmagic1                      4.17-2                         File type determination library using "magic" numbers

ocamlc -v
The Objective Caml compiler, version 3.09.2

gcc -v
gcc version 4.1.2 20060715 (prerelease) (Debian 4.1.1-9)

compiled MLDonkey CVS from source with Debian Ocaml package.
MLDonkey starts without problems here. Can you reproduce the
problem on your machine?

"debug_dir ." also works:
37 entries in dir .
store_1024
     data
Mime application/octet-stream

store_512
     data
Mime application/octet-stream

bw_h_updown.png
     PNG image data, 630 x 200, 4-bit colormap, non-interlaced
Mime image/png

bw_updown.png
     PNG image data, 630 x 200, 4-bit colormap, non-interlaced
Mime image/png

store_256
     data
Mime application/octet-stream

mlnet.pid
     ASCII text
Mime text/plain; charset=us-ascii

config_files_space.tmp
     ASCII text, with very long lines, with no line terminators
Mime text/plain; charset=us-ascii

file_sources.ini
     ASCII English text
Mime text/plain; charset=us-ascii

gnutella.ini
     ASCII English text
Mime text/plain; charset=us-ascii

gnutella2.ini
     ASCII English text
Mime text/plain; charset=us-ascii

mlnet.log
     ASCII text
Mime text/plain; charset=us-ascii

fileTP.ini
     ASCII English text
Mime text/plain; charset=us-ascii

fasttrack.ini
     ASCII English text
Mime text/plain; charset=us-ascii

donkey.ini
     ASCII English text, with very long lines
Mime text/plain; charset=us-ascii

stats_bt.ini
     ASCII English text
Mime text/plain; charset=us-ascii

bittorrent.ini
     ASCII English text
Mime text/plain; charset=us-ascii

onlinesig.dat
     ASCII text
Mime text/plain; charset=us-ascii

stats.ini
     ASCII English text
Mime text/plain; charset=us-ascii

stats_mod.ini
     ASCII English text
Mime text/plain; charset=us-ascii

users.ini
     ASCII English text
Mime text/plain; charset=us-ascii

downloads.ini
     ASCII English text
Mime text/plain; charset=us-ascii

shared_files_new.ini
     ASCII English text
Mime text/plain; charset=us-ascii

mldonkey_submit
     perl script text executable
Mime application/x-perl

mlsubmit.reg
     ASCII text
Mime text/plain; charset=us-ascii

torrents
     directory
Mime application/x-not-regular-file

servers.ini
     ASCII English text
Mime text/plain; charset=us-ascii

friends.ini
     ASCII English text
Mime text/plain; charset=us-ascii

searches.ini
     ASCII English text
Mime text/plain; charset=us-ascii

files.ini
     ASCII English text
Mime text/plain; charset=us-ascii

shared_files.ini
     ASCII English text
Mime text/plain; charset=us-ascii

old_config
     directory
Mime application/x-not-regular-file

temp
     directory
Mime application/x-not-regular-file

web_infos
     directory
Mime application/x-not-regular-file

searches
     directory
Mime application/x-not-regular-file

incoming
     directory
Mime application/x-not-regular-file

shared
     directory
Mime application/x-not-regular-file

mlnet_strings.en
     Mathematica 3.0 notebook
Mime text/plain; charset=us-ascii

spiralvoice <spiralvoice>
Project Administrator
Thu 20 Jul 2006 11:47:35 AM UTC, original submission:  

Hi,

Since version 2.7.7-4 the mldonkey-server always crashes on startup with the following message:

      • glibc detected *** corrupted double-linked list: 0x0850c210 ***

This does not happen with version 2.7.7-3

[The main change which could have caused that between 2.7.7-3 and 2.7.7-4 is the use of libmagic]

Here is an extercept of the stacktrace:

#100 0x08348b10 in ?? ()
#101 0x08095470 in ?? ()
#102 0xb763da5c in ?? ()
#103 0x084d7210 in ?? ()
#104 0x0804ed49 in ?? ()
#105 0x0831ad6a in std::operator+<char, std::char_traits<char>,
std::allocator<char> > ()
Previous frame inner to this frame (corrupt stack?)

You can find more information about the Debian bug report at
http://bugs.debian.org/378831

Samuel Mimram <smimram>

 

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Depends on the following items: None found

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    Follow 11 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2006-09-19 unease Carbon-Copy- Added -email is unavailable-
    2006-09-19 unease Carbon-CopyRemoved -email is unavailable- -
    2006-09-19 unease Carbon-Copy- Added -email is unavailable-
    2006-08-16 spiralvoice Summarymldonkey crashes on startup Crash when loading text version of GNU file magic database
    2006-08-16 spiralvoice StatusWorks For Me None
        Open/ClosedClosed Open
    2006-08-16 smimram Carbon-CopyRemoved -email is unavailable- -
    2006-07-20 spiralvoice Open/ClosedOpen Closed
    2006-07-20 spiralvoice StatusNone Works For Me
    2006-07-20 smimram Carbon-Copy- Added -email is unavailable-
    2006-07-20 smimram Carbon-Copy- Added -email is unavailable-

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