bugGNU Octave - Bugs: bug #63549, [octave forge] (control) Octave...


bug #63549: [octave forge] (control) Octave crash on certain inputs to place function

Submitter:  Luiz Antonio Maccari Junior <luiz>
Submitted:  Mon 19 Dec 2022 01:08:25 PM UTC
Category:  Octave Forge Package Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Confirmed Assigned to:  None
Originator Name:  Luiz Antonio Maccari Jr. Open/Closed:  * Open
Release:  * other Operating System:  * Any
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Wed 21 Dec 2022 06:49:50 AM UTC, comment #4: 

Just to add more information.

I am using here Linux mint 20.3 with Octave 7.3. So the crash happens on linux too.

Luiz Antonio Maccari Junior <luiz>
Wed 21 Dec 2022 03:59:38 AM UTC, comment #3: 

Looking at sl_sb01bd.cc

octave_value_list retval;
        // return values
        retval(0) = f;
        retval(1) = octave_value (nfp);
        retval(2) = octave_value (nap);
        retval(3) = octave_value (nup);
        retval(4) = z;
    } //<-- this is line 162

    return retval;

Dangling pointer?


Dmitri A. Sergatskov <dasergatskov>
Wed 21 Dec 2022 03:45:15 AM UTC, comment #2: 

On linux (octave 8.0.1 9be3a2706d62)

octave:11> L1 = place(A,C2',poloso)
free(): invalid pointer

Thread 7 "QThread" received signal SIGABRT, Aborted.
[Switching to Thread 0x7ffed66ad6c0 (LWP 20062)]
__pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
44              return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
Thread 7 (Thread 0x7ffed66ad6c0 (LWP 20062) "QThread"):
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#1  0x00007ffff1eafee3 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78
#2  0x00007ffff1e5faa6 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007ffff1e497fc in __GI_abort () at abort.c:79
#4  0x00007ffff1ea40ae in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff1fbd465 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#5  0x00007ffff1eb9bbc in malloc_printerr (str=str@entry=0x7ffff1fbb0b1 "free(): invalid pointer") at malloc.c:5660
#6  0x00007ffff1ebb9fc in _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:4435
#7  0x00007ffff1ebe343 in __GI___libc_free (mem=<optimized out>) at malloc.c:3385
#8  0x00007ffed4c004bd in std::__new_allocator<double>::deallocate(double*, unsigned long) (this=0x7ffec851ff80, __p=0x7ffec850caa0, __n=2) at /usr/include/c++/12/bits/new_allocator.h:158
#9  0x00007ffed4bffd28 in std::allocator_traits<std::allocator<double> >::deallocate(std::allocator<double>&, double*, unsigned long) (__a=..., __p=0x7ffec850caa0, __n=2) at /usr/include/c++/12/bits/alloc_traits.h:496
#10 0x00007ffed4bff122 in Array<double, std::allocator<double> >::ArrayRep::deallocate(double*, unsigned long) (this=0x7ffec851ff80, data=0x7ffec850caa0, len=2) at /usr/local/include/octave-8.0.1/octave/../octave/Array.h:208
#11 0x00007ffed4bfdf05 in Array<double, std::allocator<double> >::ArrayRep::~ArrayRep() (this=0x7ffec851ff80, __in_chrg=<optimized out>) at /usr/local/include/octave-8.0.1/octave/../octave/Array.h:188
#12 0x00007ffed4bfcfb6 in Array<double, std::allocator<double> >::~Array() (this=0x7ffed66a9860, __in_chrg=<optimized out>) at /usr/local/include/octave-8.0.1/octave/../octave/Array.h:358
#13 0x00007ffed4bfbd92 in MArray<double>::~MArray() (this=0x7ffed66a9860, __in_chrg=<optimized out>) at /usr/local/include/octave-8.0.1/octave/../octave/MArray.h:79
#14 0x00007ffed4c01484 in ColumnVector::~ColumnVector() (this=0x7ffed66a9860, __in_chrg=<optimized out>) at /usr/local/include/octave-8.0.1/octave/../octave/dColVector.h:36
#15 0x00007ffed4bd882a in F__sl_sb01bd__(octave_value_list const&, int) (args=..., nargout=5) at /tmp/oct-OGngHX/control-3.4.0/src/sl_sb01bd.cc:162
#16 0x00007ffff6e7fe02 in octave::tree_evaluator::execute_builtin_function(octave_builtin&, int, octave_value_list const&) (this=0x7ffec800a378, builtin_function=..., nargout=5, args=...) at ../libinterp/parse-tree/pt-eval.cc:3439

Full trace is attached.


(file #54133)

Dmitri A. Sergatskov <dasergatskov>
Wed 21 Dec 2022 03:27:05 AM UTC, comment #1: 

Confirming the crash happens in both the gui and the CLI on Windows with version 7.3.0 and 8.0.1 (hg id: 24bd675bceab) with control package version 3.4.0

stepping through `place`, the crash happens toward the end when calling the compiled function _sl_sb01bd_.

>> which __sl_sb01bd__
'__sl_sb01bd__' is a function from the file C:\Octave\octave-7.3.0-w64-64\mingw64\lib\octave

cc package maintainers

Nicholas Jankowski <nrjank>
Project Member
Mon 19 Dec 2022 01:08:25 PM UTC, original submission:  


I tried to put a single complex number as input in the place function and the GUI closes after this. The code to reproduce the error is below:

L = 0.5e-3
R = 10
C = 1e-3
Vi = 150

A = [-1/(C*R) 1/C;
-1/L 0]

B = [0;

C2 = [1 0]

D = []

poloso =  [0 0.7020+0.1455*j]
L1 = place(A,C2',poloso)

I suspect the error is not only the bad pole location but also related to a numerical issue. The next example does not close the GUI

A = [1 1; 1 1;]

B = [1;1;]

%pole = [1 -1*J];
pole =  [0 0.7020+0.1455*j]
K = place(A,B,pole)

Best Regards

Luiz Antonio Maccari Junior <luiz>


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Attach Files:

Attached Files
file #54133:  control_bt.txt.gz added by dasergatskov (4KiB - application/gzip)


Depends on the following items: None found

Items that depend on this one: None found


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    Follow 11 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2022-12-21 nrjank Operating SystemMicrosoft Windows Any
    2022-12-21 nrjank Carbon-Copy- Added -email is unavailable-
    2022-12-21 dasergatskov Attached File- Added control_bt.txt.gz, #54133
    2022-12-21 nrjank Item GroupUnexpected Error or Warning Segfault, Bus Error, etc.
        StatusNone Confirmed
        Release7.3.0 other
        Operating SystemGNU/Linux Microsoft Windows
        Summary[octave forge] (control) GUI closing suddenly after wrong inputs in place function [octave forge] (control) Octave crash on certain inputs to place function
        Carbon-Copy- Added -email is unavailable-
        Carbon-Copy- Added dastew
        Carbon-Copy- Added ttl

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