segfaults on mandrake...

[Ferenc Engard]

Hello,

I have reproducible, but not constant segfaults (sometimes hangups) on
Mandrake 9.2 (download edition, or what -- I do not use it
frequently).

The packages:

ruby-tk-1.8.1-1mdk
ruby-mysql-2.4.5-1
ruby-dbi-0.0.21-1
ruby-1.8.1-1mdk

Ruby version:
ruby 1.8.1 (2003-12-25) [i586-linux-gnu]

Some segfault places:

/usr/lib/ruby/site_ruby/1.8/DBD/Mysql/Mysql.rb:418: [BUG] Segmentation
fault
ruby 1.8.1 (2003-12-25) [i586-linux-gnu]

/usr/lib/ruby/site_ruby/1.8/DBD/Mysql/Mysql.rb:425: [BUG] Segmentation
fault
ruby 1.8.1 (2003-12-25) [i586-linux-gnu]

/usr/lib/ruby/site_ruby/1.8/dbi/row.rb:39: [BUG] Segmentation fault
ruby 1.8.1 (2003-12-25) [i586-linux-gnu]

(eval):762: [BUG] Segmentation fault
ruby 1.8.1 (2003-12-25) [i586-linux-gnu]

Sometimes also segfaults in my code. The program makes heavy
DBI::StatementHandle using (and output to stdout) when the crash
occurs.

This is a P4 celeron 2100MHz machine. On my home machine, which is a
P233, which is a also a 1.8.1 (2003-11-11), the crash never occurs.

Any tips?

Ferenc

 

[nobu.nokada]

Hi,

At Mon, 19 Jan 2004 06:51:04 +0900,

This is a P4 celeron 2100MHz machine. On my home machine, which is a
P233, which is a also a 1.8.1 (2003-11-11), the crash never occurs.

Sounds like concerning to pthread support. Try with CVS HEAD
version. And can't you get stack trace from core?

 

[Ferenc Engard]

Hi,

At Mon, 19 Jan 2004 06:51:04 +0900,


Sounds like concerning to pthread support. Try with CVS HEAD
version. And can't you get stack trace from core?

I have tried on another debian with the actual ruby package
(2003-12-27), and it didn't segfaulted. So it is possible that the
problem is not with ruby.

How can I core dump? Right now, I am not at the machine, so apologize
if it dumps core automatically.

If it is possible, I wouldn't try the CVS version, as I have a real
tight deadline to deliver my program (hence this new distro-related
problem).

I guess my glibc (pthreads) version is 2.3.2.

It is a real big problem to me, if I cannot install my script to these
mdk boxes... ((

Thanks,
Ferenc

 

[Ferenc Engard]

Hello,

I still cannot know how to dump core, but running 3 times from gdb
caused 3 segfaults in different places.

I am totally helpless. What can I do?

Ferenc

Here are the backtraces (sorry about the long mail):

(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x401aef9f in realloc () from /lib/i686/libc.so.6
(gdb) bt
#0 0x401aef9f in realloc () from /lib/i686/libc.so.6
#1 0x40061e68 in ruby_xrealloc () from /usr/lib/libruby.so.1.8
#2 0x400ad33a in rb_str_update () from /usr/lib/libruby.so.1.8
#3 0x400505a8 in rb_frame_last_func () from /usr/lib/libruby.so.1.8
#4 0x40045cb5 in rb_eval_string () from /usr/lib/libruby.so.1.8
#5 0x4004ded9 in rb_rescue2 () from /usr/lib/libruby.so.1.8
#6 0x40018822 in lib_watchdog_ensure ()
from /usr/lib/ruby/1.8/i586-linux-gnu/tcltklib.so
#7 0x4004e11e in rb_ensure () from /usr/lib/libruby.so.1.8
#8 0x40018905 in lib_watchdog_ensure ()
from /usr/lib/ruby/1.8/i586-linux-gnu/tcltklib.so
(gdb)



(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x400a9fd0 in st_free_table () from /usr/lib/libruby.so.1.8
(gdb) bt
#0 0x400a9fd0 in st_free_table () from /usr/lib/libruby.so.1.8
#1 0x4006342f in rb_gc_force_recycle () from /usr/lib/libruby.so.1.8
#2 0x40063188 in rb_gc_mark () from /usr/lib/libruby.so.1.8
#3 0x400638b9 in rb_gc () from /usr/lib/libruby.so.1.8
#4 0x40062269 in rb_newobj () from /usr/lib/libruby.so.1.8
#5 0x4004ecf3 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#6 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#7 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#8 0x4004adef in rb_Array () from /usr/lib/libruby.so.1.8
#9 0x4004cf0a in rb_iterator_p () from /usr/lib/libruby.so.1.8
#10 0x4004d217 in rb_yield_values () from /usr/lib/libruby.so.1.8
#11 0x400408e9 in rb_each () from /usr/lib/libruby.so.1.8
#12 0x4004ce97 in rb_iterator_p () from /usr/lib/libruby.so.1.8
#13 0x4004d151 in rb_yield () from /usr/lib/libruby.so.1.8
#14 0x40033472 in rb_ary_each () from /usr/lib/libruby.so.1.8
#15 0x4005c1fa in rb_throw () from /usr/lib/libruby.so.1.8
#16 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#17 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#18 0x4004f903 in rb_funcall () from /usr/lib/libruby.so.1.8
#19 0x4003f957 in rb_each () from /usr/lib/libruby.so.1.8
#20 0x4004da29 in rb_iterate () from /usr/lib/libruby.so.1.8
#21 0x40040963 in rb_each () from /usr/lib/libruby.so.1.8
#22 0x4005c1fa in rb_throw () from /usr/lib/libruby.so.1.8
#23 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#24 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#25 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#26 0x4004b523 in rb_Array () from /usr/lib/libruby.so.1.8
#27 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#28 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#29 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#30 0x4004b4e5 in rb_Array () from /usr/lib/libruby.so.1.8
#31 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#32 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#33 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#34 0x4004993f in rb_Array () from /usr/lib/libruby.so.1.8
#35 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#36 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#37 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#38 0x4004870d in rb_Array () from /usr/lib/libruby.so.1.8
---Type <return> to continue, or q <return> to quit---
#39 0x4004870d in rb_Array () from /usr/lib/libruby.so.1.8
#40 0x4004870d in rb_Array () from /usr/lib/libruby.so.1.8
#41 0x4004993f in rb_Array () from /usr/lib/libruby.so.1.8
#42 0x4004cf0a in rb_iterator_p () from /usr/lib/libruby.so.1.8
#43 0x4004d151 in rb_yield () from /usr/lib/libruby.so.1.8
#44 0x40079204 in rb_fix2str () from /usr/lib/libruby.so.1.8
#45 0x4005c1fa in rb_throw () from /usr/lib/libruby.so.1.8
#46 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#47 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#48 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#49 0x4004b523 in rb_Array () from /usr/lib/libruby.so.1.8
#50 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#51 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#52 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#53 0x40048965 in rb_Array () from /usr/lib/libruby.so.1.8
#54 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#55 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#56 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#57 0x4004cf0a in rb_iterator_p () from /usr/lib/libruby.so.1.8
#58 0x400548a1 in rb_f_lambda () from /usr/lib/libruby.so.1.8
#59 0x400549c8 in rb_f_lambda () from /usr/lib/libruby.so.1.8
#60 0x4005c1c6 in rb_throw () from /usr/lib/libruby.so.1.8
#61 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#62 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#63 0x4004f9ab in rb_funcall2 () from /usr/lib/libruby.so.1.8
#64 0x400462d0 in rb_eval_cmd () from /usr/lib/libruby.so.1.8
#65 0x4001f966 in _init () from /usr/lib/ruby/1.8/i586-linux-gnu/tkutil.so
#66 0x4005c1e4 in rb_throw () from /usr/lib/libruby.so.1.8
#67 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#68 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#69 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#70 0x4004cf0a in rb_iterator_p () from /usr/lib/libruby.so.1.8
#71 0x400548a1 in rb_f_lambda () from /usr/lib/libruby.so.1.8
#72 0x400549c8 in rb_f_lambda () from /usr/lib/libruby.so.1.8
#73 0x4005c1c6 in rb_throw () from /usr/lib/libruby.so.1.8
#74 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#75 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#76 0x4004f9ab in rb_funcall2 () from /usr/lib/libruby.so.1.8
#77 0x400462d0 in rb_eval_cmd () from /usr/lib/libruby.so.1.8
---Type <return> to continue, or q <return> to quit---
#78 0x4001f966 in _init () from /usr/lib/ruby/1.8/i586-linux-gnu/tkutil.so
#79 0x4005c1e4 in rb_throw () from /usr/lib/libruby.so.1.8
#80 0x4004f1fd in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#81 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#82 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#83 0x4004ae1b in rb_Array () from /usr/lib/libruby.so.1.8
#84 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#85 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#86 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#87 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#88 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#89 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#90 0x4004ef97 in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#91 0x4004f59f in rb_with_disable_interrupt () from /usr/lib/libruby.so.1.8
#92 0x400486bc in rb_Array () from /usr/lib/libruby.so.1.8
#93 0x400503e1 in rb_frame_last_func () from /usr/lib/libruby.so.1.8
#94 0x40045cb5 in rb_eval_string () from /usr/lib/libruby.so.1.8
#95 0x4004ded9 in rb_rescue2 () from /usr/lib/libruby.so.1.8
#96 0x40018822 in lib_watchdog_ensure ()
from /usr/lib/ruby/1.8/i586-linux-gnu/tcltklib.so
#97 0x4004e11e in rb_ensure () from /usr/lib/libruby.so.1.8
#98 0x40018905 in lib_watchdog_ensure ()
from /usr/lib/ruby/1.8/i586-linux-gnu/tcltklib.so



(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x401afb5d in mallopt () from /lib/i686/libc.so.6
(gdb) bt
#0 0x401afb5d in mallopt () from /lib/i686/libc.so.6
#1 0x401aecb8 in malloc () from /lib/i686/libc.so.6
(gdb)

 

[nobu.nokada]

Hi,

At Tue, 20 Jan 2004 07:42:41 +0900,

I still cannot know how to dump core, but running 3 times from gdb
caused 3 segfaults in different places.

Try "ulimit -c unlimited" to make core.

Here are the backtraces (sorry about the long mail):

All seem related with GC. I guess it might be fixed in CVS
HEAD, or disapper by configuring with --disable-pthread.

 

[Ferenc Engard]

Hi,

At Tue, 20 Jan 2004 07:42:41 +0900,


Try "ulimit -c unlimited" to make core.


All seem related with GC. I guess it might be fixed in CVS
HEAD, or disapper by configuring with --disable-pthread.

Does it affect multithreading (i.e., tk)?

Anyway, it seems that the problem exists only on mandrake, even with
newer ruby than on my debian box. The latest one was tried is
2003-12-27, and on debian I was happy with 2003-11-11. Are you sure
compiling the HEAD version solves the problem?

Nobody uses mandrake here?

Ferenc

 

[Yukihiro Matsumoto]

Hi,

In message "Re: segfaults on mandrake..."
|>
|> All seem related with GC. I guess it might be fixed in CVS
|> HEAD, or disapper by configuring with --disable-pthread.
|
|Does it affect multithreading (i.e., tk)?

Depends on your platform. If your tcltk is linked with -lpthread,
-enable-pthread is necessary.

matz.

 

[nobu.nokada]

Hi,

At Tue, 20 Jan 2004 15:14:49 +0900,

Does it affect multithreading (i.e., tk)?

It should have worked before --enable-pthread was introduced.

Anyway, it seems that the problem exists only on mandrake, even with
newer ruby than on my debian box. The latest one was tried is
2003-12-27, and on debian I was happy with 2003-11-11. Are you sure
compiling the HEAD version solves the problem?

Though I'm not sure, there are some fixes which are not
backported to 1.8 yet.

 

[Ferenc Engard]

Hi,

In message "Re: segfaults on mandrake..."
|>
|> All seem related with GC. I guess it might be fixed in CVS
|> HEAD, or disapper by configuring with --disable-pthread.
|
|Does it affect multithreading (i.e., tk)?

Depends on your platform. If your tcltk is linked with -lpthread,
-enable-pthread is necessary.

Yes, it does. :-(

fery@cirmi:~$ ldd /usr/lib/libtk8.4.so.0
libpthread.so.0 => /lib/libpthread.so.0 (0x400e0000)
[...]


Ferenc

 

[Ferenc Engard]

Hi,

At Tue, 20 Jan 2004 15:14:49 +0900,


It should have worked before --enable-pthread was introduced.


Though I'm not sure, there are some fixes which are not
backported to 1.8 yet.

As there were no other suggestions, I try to do my first ruby
compiling... (

Mandrake uses many dist-specific patches to libc. Cannot be the
problem connected with one of these patches?

Ferenc

 

[Mike Stok]

Does it affect multithreading (i.e., tk)?

Anyway, it seems that the problem exists only on mandrake, even with
newer ruby than on my debian box. The latest one was tried is
2003-12-27, and on debian I was happy with 2003-11-11. Are you sure
compiling the HEAD version solves the problem?

Nobody uses mandrake here?

I use Mandrake 9.2 (up to date with the latest patches) with a "self
compiled" Ruby 1.8.1 with no problems, and I am messing around with a
Tk application quite happily.

[mike@ratdog mike]$ cat /etc/redhat-release
Mandrake Linux release 9.2 (FiveStar) for i586
[mike@ratdog mike]$ rpm -qa | grep '^tk-'
tk-8.4.2-1mdk
[mike@ratdog mike]$ ldd /usr/lib/libtk8.4.so
libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x400e2000)
libdl.so.2 => /lib/libdl.so.2 (0x401c5000)
libm.so.6 => /lib/i686/libm.so.6 (0x401c8000)
libc.so.6 => /lib/i686/libc.so.6 (0x401eb000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)

Would there be any mileage in setting up something like Perl's smoke
test system (see http://search.cpan.org/dist/Test-Smoke/FAQ and an
example report from the archive
http://www.nntp.perl.org/group/perl.daily-build.reports/13325)?

Mike

 

[nobu.nokada]

Hi,

At Tue, 20 Jan 2004 17:56:01 +0900,

Mandrake uses many dist-specific patches to libc. Cannot be the
problem connected with one of these patches?

As for possibility, yes. But I don't know what patches there
are.

 

[Ferenc Engard]

Ferenc Engard said:

Mandrake has a ruby-tk package. Did you install this one? Also, the
ruby rpm is not compiled with pthreads enabled (at least the one from
rpmfind.net). You could try editing the spec file and re-create the
rpm.

Sorry, I looked on my debian box. On mdk, the ruby and the libtk do
not depend on pthreads.

So, this cannot be the problem. :-(((

We use those packages, and my brother tried compile from the latest
sources which mdk provides. Still crashes...

The program crashes after I start to iterate through on a
DBI::statementHandle with 2-3000 rows, but not always the same place.
Sometimes during the iteration (searching, anyway), sometimes after
it. I suspect to the GC, too, as many objects are created during this
process.

How can I get more debug info, which I can forward to you?

Ferenc

 

[Ferenc Engard]

Does it affect multithreading (i.e., tk)?

Anyway, it seems that the problem exists only on mandrake, even with
newer ruby than on my debian box. The latest one was tried is
2003-12-27, and on debian I was happy with 2003-11-11. Are you sure
compiling the HEAD version solves the problem?

Nobody uses mandrake here?

I use Mandrake 9.2 (up to date with the latest patches) with a "self
compiled" Ruby 1.8.1 with no problems, and I am messing around with a
Tk application quite happily.

[mike@ratdog mike]$ cat /etc/redhat-release
Mandrake Linux release 9.2 (FiveStar) for i586
[mike@ratdog mike]$ rpm -qa | grep '^tk-'
tk-8.4.2-1mdk

Mine:

ruby-1.8.1-1mdk (2004-01-07)
tk-8.4.5-2mdk (2003-11-25)

Home-made libmysql-ruby, the source seems to be 2.4.5, 2003-08-09

I also use tktable and tix.

Ferenc

 

[Ferenc Engard]

Here are the backtraces (sorry about the long mail):

It should have worked before --enable-pthread was introduced.


Though I'm not sure, there are some fixes which are not
backported to 1.8 yet.

Compiling from the yesterday's snapshot (with mdk patches) do not
produce these errors. Thank you very much for your help!

Ferenc