[petsc-dev] crash inside PetscVFPrintfDefault on using -help

[Jed Brown]

Looks like there are a couple of these uninitialized or improperly
initialized cases in valgrind ./exX -help. I'll look at them and patch
petsc-3.3. Thanks.

On Sun, Jul 8, 2012 at 4:23 PM, Chetan Jhurani <chetan.jhurani at gmail.com>wrote:

> Hi,
>
> PetscVFPrintfDefault crashes on using -help on command line
> due to bad function arguments.
>
> Tried this using src/snes/examples/tutorials/ex19, and
> petsc-dev nightly and petsc-3.3-p1.  The stack is given below
> and the code is not valgrind clean.  The debugger told
> me that in src/ksp/ksp/interface/itcl.c and on this line
> ksp->pc_side is -1.
>
>    ierr = PetscOptionsEList("-ksp_pc_side","KSP preconditioner side",
>
> "KSPSetPCSide",PCSides,3,PCSides[ksp->pc_side],&indx,&flg);CHKERRQ(ierr);
>
> Stack:
>
> ..... [help skipped]
>
>   -ksp_monitor_draw_true_residual: <FALSE> Monitor graphically true
> residual norm (KSPMonitorSet)
>   -ksp_monitor_range_draw: <FALSE> Monitor graphically range of
> preconditioned residual norm (KSPMonitorSet)
>   -ksp_monitor_ams: <FALSE> Publish KSP progress using AMS (KSPMonitorSet)
> [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]PETSCERROR: or try
> http://valgrind.org on
> GNU/linux and Apple Mac OS X to find memory corruption errors
> [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] PetscVFPrintfDefault line 197 src/sys/fileio/mprint.c
> [0]PETSC ERROR: [0] PetscHelpPrintfDefault line 607 src/sys/fileio/mprint.c
> [0]PETSC ERROR: [0] PetscOptionsEList line 967 src/sys/objects/aoptions.c
> [0]PETSC ERROR: [0] KSPSetFromOptions line 382 src/ksp/ksp/interface/itcl.c
> [0]PETSC ERROR: [0] SNESSetFromOptions line 540 src/snes/interface/snes.c
> [0]PETSC ERROR: --------------------- Error Message
> ------------------------------------
> [0]PETSC ERROR: Signal received!
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: Petsc Development HG revision:
> 13f423daabbd83291cd7dca6481f7cffb49b7019  HG Date: Sat Jul 07 21:50:45 2012
> -0500
> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
> [0]PETSC ERROR: See docs/index.html for manual pages.
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: ./ex19 on a test_cras named mg1.txcorp.com by jhurani Sun
> Jul  8 18:15:50 2012
> [0]PETSC ERROR: Libraries linked from
> /scr_0/jhurani/builds/crash/petsc-dev/test_crash/lib
> [0]PETSC ERROR: Configure run at Sun Jul  8 18:12:46 2012
> [0]PETSC ERROR: Configure options --with-clanguage=C++ --with-c-support=1
> --with-fortran=0 --with-debugging=yes
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: User provided function() line 0 in unknown directory
> unknown file
> --------------------------------------------------------------------------
>
> Chetan
>
>
>
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