bugGNU Octave - Bugs: bug #33945, Segfault in 3.4.2 with: m =...

 
 

bug #33945: Segfault in 3.4.2 with: m = randn(40); m'*m;

Submitter:  Martin Vogt <mvogt1>
Submitted:  Thu 04 Aug 2011 01:54:47 PM UTC
   
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  Invalid / Not an Octave Bug Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * 3.4.2 Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Thu 04 Aug 2011 03:36:18 PM UTC, comment #4: 


Hello,

>I think you may have run into this bug:
>http://bugs.debian.org/613070


I have update libatlas to :

libatlas3-3.8.4-25.1

and the segfault is gone.

thanks for your help.


Martin Vogt <mvogt1>
Thu 04 Aug 2011 02:27:31 PM UTC, comment #3: 

I think you may have run into this bug:

http://bugs.debian.org/613070

Jordi GutiƩrrez Hermoso <jordigh>
Group Member
Thu 04 Aug 2011 02:24:03 PM UTC, comment #2: 

./run-octave -g
GNU gdb (GDB; SUSE Linux Enterprise 11) 6.8.50.20081120-cvs
Copyright (C) 2008 Free Software Foundation, Inc.
(gdb) run
Starting program:[....]

octave:1> m = randn(40); m'*m;
---Type <return> to continue, or q <return> to quit---

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff1578c4d in ATL_dJIK40x40x40TN40x40x0_a1_b0 ()
   from /usr/lib64/libatlas.so

===>

rpm -qf /usr/lib64/libatlas.so
libatlas3-3.8.3-2.3

So maybe its libatlas??


Martin Vogt <mvogt1>
Thu 04 Aug 2011 02:10:47 PM UTC, comment #1: 

Can you provide a stack trace? Do you need instructions how?

Jordi GutiƩrrez Hermoso <jordigh>
Group Member
Thu 04 Aug 2011 01:54:47 PM UTC, original submission:  

Hello list,

the following program segfaults:

m = randn(40);
m'*m;

panic: Segmentation fault -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Segmentation fault

The following program works:

octave:1> m = randn(39);
octave:2> m'*m;


Using a temporary variable works too:

octave:5> A=randn(40);
octave:6> B=A';
octave:7> B*A;


tested with 3.2.4 and current 3.4.2 on 64bit SuSE SLES11.

regards,

Martin

Martin Vogt <mvogt1>

 

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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2011-08-04 jwe StatusNone Invalid / Not an Octave Bug
        Open/ClosedOpen Closed

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