[petsc-users] valgrind error messages with PETSc V3.5.1

Sat, 02 Aug 2014 12:21:06 -0700 

The attached small program, basically a call to PetscPrintf, gives the 
following valgrind errors:

[rmackie ~/tst_petsc_problem] ./cmd_test
==24812== Invalid read of size 1
==24812==    at 0x4C2E500: __GI_strncpy (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24812==    by 0x4EF5B4D: PetscStrncpy (str.c:335)
==24812==    by 0x4F334E0: petscprintf_ (zmprintf.c:54)
==24812==    by 0x400F28: MAIN__ (test.F90:11)
==24812==    by 0x400F9A: main (test.F90:16)
==24812==  Address 0x8cef9bb is 0 bytes after a block of size 11 alloc'd
==24812==    at 0x4C2AB80: malloc (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24812==    by 0x6828BB4: ??? (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24812==    by 0x68FBC97: _gfortran_string_trim (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24812==    by 0x400EFD: MAIN__ (test.F90:11)
==24812==    by 0x400F9A: main (test.F90:16)
==24812== 


The program was compiled with PETSc V3.5.1 and --download-mpich.

The same program compiled with V3.4.4 and --download-mpich does not give these 
errors.

It seems like an innocuous error, and I can certainly create a suppression file 
for it, but I thought I'd report it anyway.
I get the same error on 2 different systems and I've tried 3 different gfortran 
versions, all with the same result.

Program, configure commands, etc, attached.

Randy M.

Attachment: makefile
Description: Binary data

Attachment: test.F90
Description: Binary data

[rmackie ~/tst_petsc_problem] ./cmd_test
==24812== Invalid read of size 1
==24812==    at 0x4C2E500: __GI_strncpy (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24812==    by 0x4EF5B4D: PetscStrncpy (str.c:335)
==24812==    by 0x4F334E0: petscprintf_ (zmprintf.c:54)
==24812==    by 0x400F28: MAIN__ (test.F90:11)
==24812==    by 0x400F9A: main (test.F90:16)
==24812==  Address 0x8cef9bb is 0 bytes after a block of size 11 alloc'd
==24812==    at 0x4C2AB80: malloc (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24812==    by 0x6828BB4: ??? (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24812==    by 0x68FBC97: _gfortran_string_trim (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24812==    by 0x400EFD: MAIN__ (test.F90:11)
==24812==    by 0x400F9A: main (test.F90:16)
==24812== 
==24814== Invalid read of size 1
==24814==    at 0x4C2E500: __GI_strncpy (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24814==    by 0x4EF5B4D: PetscStrncpy (str.c:335)
==24814==    by 0x4F334E0: petscprintf_ (zmprintf.c:54)
==24814==    by 0x400F28: MAIN__ (test.F90:11)
==24814==    by 0x400F9A: main (test.F90:16)
==24814==  Address 0x8cef5ab is 0 bytes after a block of size 11 alloc'd
==24814==    at 0x4C2AB80: malloc (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24814==    by 0x6828BB4: ??? (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24814==    by 0x68FBC97: _gfortran_string_trim (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24814==    by 0x400EFD: MAIN__ (test.F90:11)
==24814==    by 0x400F9A: main (test.F90:16)
==24814== 
==24815== Invalid read of size 1
==24815==    at 0x4C2E500: __GI_strncpy (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24815==    by 0x4EF5B4D: PetscStrncpy (str.c:335)
==24815==    by 0x4F334E0: petscprintf_ (zmprintf.c:54)
==24815==    by 0x400F28: MAIN__ (test.F90:11)
==24815==    by 0x400F9A: main (test.F90:16)
==24815==  Address 0x8cef51b is 0 bytes after a block of size 11 alloc'd
==24815==    at 0x4C2AB80: malloc (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24815==    by 0x6828BB4: ??? (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24815==    by 0x68FBC97: _gfortran_string_trim (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24815==    by 0x400EFD: MAIN__ (test.F90:11)
==24815==    by 0x400F9A: main (test.F90:16)
==24815== 
==24813== Invalid read of size 1
==24813==    at 0x4C2E500: __GI_strncpy (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24813==    by 0x4EF5B4D: PetscStrncpy (str.c:335)
==24813==    by 0x4F334E0: petscprintf_ (zmprintf.c:54)
==24813==    by 0x400F28: MAIN__ (test.F90:11)
==24813==    by 0x400F9A: main (test.F90:16)
==24813==  Address 0x8cef51b is 0 bytes after a block of size 11 alloc'd
==24813==    at 0x4C2AB80: malloc (in 
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==24813==    by 0x6828BB4: ??? (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24813==    by 0x68FBC97: _gfortran_string_trim (in 
/usr/lib/x86_64-linux-gnu/libgfortran.so.3.0.0)
==24813==    by 0x400EFD: MAIN__ (test.F90:11)
==24813==    by 0x400F9A: main (test.F90:16)
==24813==

Attachment: cmd_configure
Description: Binary data

Attachment: cmd_test
Description: Binary data

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