[petsc-users] KSP_Solve crashes in debug mode

[Sajid Ali Syed]

I added “-malloc_debug” in a .petscrc file and ran it again. The backtrace from lldb is in the attached file. The crash now seems to be at:

Process 32660 stopped* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x16f603fb8)
    frame #0: 0x0000000112ecc8f8 libpetsc.3.018.dylib`PetscFPrintf(comm=0, fd=0x0000000000000000, format=0x0000000000000000) at mprint.c:601
   598               `PetscViewerASCIISynchronizedPrintf()`, `PetscSynchronizedFlush()`
   599      @*/
   600      PetscErrorCode PetscFPrintf(MPI_Comm comm, FILE *fd, const char format[], ...)
-> 601      {
   602       PetscMPIInt rank;
   603      
   604       PetscFunctionBegin;
(lldb) frame info
frame #0: 0x0000000112ecc8f8 libpetsc.3.018.dylib`PetscFPrintf(comm=0, fd=0x0000000000000000, format=0x0000000000000000) at mprint.c:601
(lldb)


The trace seems to indicate some sort of infinite loop causing an overflow.

PS: I'm using a arm64 mac, so I don't have access to valgrind.

Thank You,
Sajid Ali (he/him) | Research Associate
Scientific Computing Division
Fermi National Accelerator Laboratory
s-sajid-ali.github.io<http://s-sajid-ali.github.io>

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