From: Augustin Degomme <adegomme@users.noreply.github.com>
Date: Sat, 6 Apr 2019 12:53:51 +0000 (+0200)
Subject: protect against bad buffer
X-Git-Tag: v3.22.2~163^2~1
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/a4129e0f81724054c885e3242f05996ffa9d501b

protect against bad buffer
---

diff --git a/src/smpi/bindings/smpi_pmpi_coll.cpp b/src/smpi/bindings/smpi_pmpi_coll.cpp
index 09324ed52b..c4f8183dca 100644
--- a/src/smpi/bindings/smpi_pmpi_coll.cpp
+++ b/src/smpi/bindings/smpi_pmpi_coll.cpp
@@ -534,6 +534,8 @@ int PMPI_Iscan(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, M
     retval = MPI_ERR_ARG;
   } else if (count < 0){
     retval = MPI_ERR_COUNT;
+  } else if (sendbuf == nullptr || recvbuf == nullptr){
+    retval = MPI_ERR_BUFFER;
   } else {
     int rank = simgrid::s4u::this_actor::get_pid();
     void* sendtmpbuf = sendbuf;
@@ -580,6 +582,8 @@ int PMPI_Iexscan(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype,
     retval = MPI_ERR_ARG;
   } else if (count < 0){
     retval = MPI_ERR_COUNT;
+  } else if (sendbuf == nullptr || recvbuf == nullptr){
+    retval = MPI_ERR_BUFFER;
   } else {
     int rank         = simgrid::s4u::this_actor::get_pid();
     void* sendtmpbuf = sendbuf;