[petsc-users] valgrind errors

[Junchao Zhang]

I was able to reproduce it.  Let me ask MPICH developers.

--Junchao Zhang


On Tue, Dec 12, 2023 at 3:06 PM Randall Mackie <rlmackie862 at gmail.com>
wrote:

> It now seems to me that petsc+mpich is no longer valgrind clean, or I am
> doing something wrong.
>
> A simple program:
>
>
> Program test
>
> #include "petsc/finclude/petscsys.h"
>   use petscsys
>
>   PetscInt :: ierr
>
>   call PetscInitialize(PETSC_NULL_CHARACTER,ierr)
>   call PetscFinalize(ierr)
>
> end program test
>
>
> PETSc compiled in debug mode, complex scalars, and download-mpich, when
> run with valgrind generates errors like these:
>
> ==3997== Syscall param writev(vector[...]) points to uninitialised byte(s)
> ==3997==    at 0x8C31867: writev (writev.c:26)
> ==3997==    by 0x9C20DE4: MPL_large_writev (mpl_sock.c:31)
> ==3997==    by 0x9BF1050: MPIDI_CH3I_Sock_writev (sock.c:2689)
> ==3997==    by 0x9BF9812: MPIDI_CH3_iStartMsgv (ch3_istartmsgv.c:92)
> ==3997==    by 0x9BA7790: MPIDI_CH3_EagerContigSend (ch3u_eager.c:191)
> ==3997==    by 0x9BCA7EC: MPID_Send (mpid_send.c:132)
> ==3997==    by 0x9BCAC64: MPID_Send_coll (mpid_send.c:206)
> ==3997==    by 0x9A2AC7C: MPIC_Send (helper_fns.c:126)
> ==3997==    by 0x993A645: MPIR_Bcast_intra_binomial
> (bcast_intra_binomial.c:146)
> ==3997==    by 0x99FF64A: MPIR_Bcast_allcomm_auto (mpir_coll.c:323)
> ==3997==    by 0x99FFC06: MPIR_Bcast_impl (mpir_coll.c:420)
> ==3997==    by 0x99FCF86: MPID_Bcast (mpid_coll.h:30)
> ==3997==    by 0x99FFE13: MPIR_Bcast (mpir_coll.c:465)
> ==3997==    by 0x974A513: internal_Bcast (bcast.c:93)
> ==3997==    by 0x974A72B: PMPI_Bcast (bcast.c:143)
> ==3997==    by 0x4B8D6DB: PETScParseFortranArgs_Private (zstart.c:182)
> ==3997==    by 0x4B8DDFA: PetscInitFortran_Private (zstart.c:200)
> ==3997==    by 0x4B34931: PetscInitialize_Common (pinit.c:974)
> ==3997==    by 0x4B8E8C7: petscinitializef_ (zstart.c:284)
> ==3997==    by 0x4959434: __petscsys_MOD_petscinitializenohelp
> (petscsysmod.F90:374)
> ==3997==  Address 0x1ffeffcac0 is on thread 1's stack
> ==3997==  in frame #4, created by MPIDI_CH3_EagerContigSend
> (ch3u_eager.c:160)
> ==3997==  Uninitialised value was created by a stack allocation
> ==3997==    at 0x9BA7601: MPIDI_CH3_EagerContigSend (ch3u_eager.c:160)
> ==3997==
>
> ==3997== Syscall param write(buf) points to uninitialised byte(s)
> ==3997==    at 0x8C2B697: write (write.c:26)
> ==3997==    by 0x9BF0F1D: MPIDI_CH3I_Sock_write (sock.c:2614)
> ==3997==    by 0x9BF7AAE: MPIDI_CH3_iStartMsg (ch3_istartmsg.c:68)
> ==3997==    by 0x9BA7A27: MPIDI_CH3_EagerContigShortSend (ch3u_eager.c:262)
> ==3997==    by 0x9BCA766: MPID_Send (mpid_send.c:119)
> ==3997==    by 0x9BCAC64: MPID_Send_coll (mpid_send.c:206)
> ==3997==    by 0x9A2AC7C: MPIC_Send (helper_fns.c:126)
> ==3997==    by 0x993A645: MPIR_Bcast_intra_binomial
> (bcast_intra_binomial.c:146)
> ==3997==    by 0x99FF64A: MPIR_Bcast_allcomm_auto (mpir_coll.c:323)
> ==3997==    by 0x99FFC06: MPIR_Bcast_impl (mpir_coll.c:420)
> ==3997==    by 0x99FCF86: MPID_Bcast (mpid_coll.h:30)
> ==3997==    by 0x99FFE13: MPIR_Bcast (mpir_coll.c:465)
> ==3997==    by 0x974A513: internal_Bcast (bcast.c:93)
> ==3997==    by 0x974A72B: PMPI_Bcast (bcast.c:143)
> ==3997==    by 0x4DB95A2: PetscOptionsGetenv (pdisplay.c:61)
> ==3997==    by 0x4E0D745: PetscStrreplace (str.c:572)
> ==3997==    by 0x4AC8DEA: PetscOptionsFilename (options.c:416)
> ==3997==    by 0x4ACF0B5: PetscOptionsInsertFile (options.c:632)
> ==3997==    by 0x4AD3CB5: PetscOptionsInsert (options.c:861)
> ==3997==    by 0x4B8E0EF: PetscInitFortran_Private (zstart.c:206)
> ==3997==  Address 0x1ffeff7998 is on thread 1's stack
> ==3997==  in frame #3, created by MPIDI_CH3_EagerContigShortSend
> (ch3u_eager.c:223)
> ==3997==  Uninitialised value was created by a stack allocation
> ==3997==    at 0x9BA788F: MPIDI_CH3_EagerContigShortSend (ch3u_eager.c:223)
> ==3997==
>
> Is this a known issue or am I doing something wrong?
>
> Thanks, Randy
>
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