coll/hcoll: bugfix: initialize req_type field

Valentin Petrov · jladd-mlnx · commit 2bab0944f0f4 · 2016-05-25T18:57:35.000+03:00
If left uninitialized then segfault is possible in MPI_Waitall in the case the field by chance equals OMPI_REQUEST_GEN. (cherry picked from commit 5ff6372)
diff --git a/ompi/mca/coll/hcoll/coll_hcoll_rte.c b/ompi/mca/coll/hcoll/coll_hcoll_rte.c
@@ -406,6 +406,7 @@ static void* get_coll_handle(void)
     ompi_req->req_status.MPI_ERROR = MPI_SUCCESS;
     ompi_req->req_state = OMPI_REQUEST_ACTIVE;
     ompi_req->req_free = request_free;
+    ompi_req->req_type = OMPI_REQUEST_COLL;
     return (void *)ompi_req;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -406,6 +406,7 @@ static void* get_coll_handle(void)`
`406`	`406`	`ompi_req->req_status.MPI_ERROR = MPI_SUCCESS;`
`407`	`407`	`ompi_req->req_state = OMPI_REQUEST_ACTIVE;`
`408`	`408`	`ompi_req->req_free = request_free;`
	`409`	`+ ompi_req->req_type = OMPI_REQUEST_COLL;`
`409`	`410`	`return (void *)ompi_req;`
`410`	`411`	`}`
`411`	`412`