Revert "pml/cm: fix buffer usage in MCA_PML_CM_HVY_SEND_REQUEST_BSEND…

…_ALLOC()" This reverts commit d71fe93. The revert fixes a bug revealed by mtt ibm test suite. The send buffer instead of the attached user buffer was not used for MPI_Bsend. This violates the MPI_Bsend semantic and makes it unsafe to reuse the send buffer after the function returns. The revert is also needed for 4.x Signed-off-by: Wenduo Wang <[email protected]>
wenduwan · Sep 3, 2023 · bfe6771 · bfe6771
1 parent 76b91ce
commit bfe6771
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ompi/mca/pml/cm/pml_cm_sendreq.h b/ompi/mca/pml/cm/pml_cm_sendreq.h
@@ -381,7 +381,7 @@ do {                                                                    \
                                  &max_data );                           \
             opal_convertor_prepare_for_send( &sendreq->req_send.req_base.req_convertor, \
                                              &(ompi_mpi_packed.dt.super),  \
-                                             max_data, sendreq->req_addr ); \
+                                             max_data, sendreq->req_buff ); \
         }                                                               \
     }                                                                   \
  } while(0);