[petsc-users] Error to TaoSolve() call

[Khai Hong Pham]

Hello,

I call TaosSolve() in my code. The solution vector is a nested and Jacobian
matrix is nested too. It shows me the error:

[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
probably memory access out of range
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
[0]PETSC ERROR: or see
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[0]PETSC ERROR:
or try http://valgrind.org on GNU/linux and Apple Mac OS X to find memory
corruption errors
[1]PETSC ERROR: [0]PETSC ERROR: likely location of problem given in stack
below
[0]PETSC ERROR: ---------------------  Stack Frames
------------------------------------
[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,
[0]PETSC ERROR:       INSTEAD the line number of the start of the function
[0]PETSC ERROR:       is given.
[0]PETSC ERROR: [0] VecRestoreArray_Nest line 731
/home/khp/bin/petsc-3.5.1/src/vec/vec/impls/nest/vecnest.c
[0]PETSC ERROR: [0] VecRestoreArray line 1656
/home/khp/bin/petsc-3.5.1/src/vec/vec/interface/rvector.c
[0]PETSC ERROR: [0] VecMedian line 806
/home/khp/bin/petsc-3.5.1/src/vec/vec/utils/projection.c
[0]PETSC ERROR: [0] TaoSolve_SSILS line 52
/home/khp/bin/petsc-3.5.1/src/tao/complementarity/impls/ssls/ssils.c
[0]PETSC ERROR: [0] TaoSolve line 171
/home/khp/bin/petsc-3.5.1/src/tao/interface/taosolver.c

I debugged with valgrind and received the following message:

==19424== Invalid read of size 8
==19424==    at 0x54089E4: VecRestoreArray_Nest (vecnest.c:746)
==19424==    by 0x53F5F6F: VecRestoreArray (rvector.c:1666)
==19424==    by 0x54BE874: VecMedian (projection.c:855)
==19424==    by 0x6247B74: TaoSolve_SSILS (ssils.c:59)
==19424==    by 0x620739E: TaoSolve (taosolver.c:188)
==19424==    by 0x40491C: main (main.cpp:265)
==19424==  Address 0x0 is not stack'd, malloc'd or (recently) free'd

It looks like the bug relates to the nested vector. Could you please give
me a hint to locate the bug? Thanks.

Khai
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20140811/0db1b261/attachment.html>