erts: Fix dereferencing of unaligned integer for sparc

2 files changed, 9 insertions, 6 deletions

diff --git a/erts/emulator/sys/unix/erl_child_setup.c b/erts/emulator/sys/unix/erl_child_setup.c
index 71c7948bf0..8bec36be60 100644
--- a/erts/emulator/sys/unix/erl_child_setup.c
+++ b/erts/emulator/sys/unix/erl_child_setup.c
@@ -133,8 +133,8 @@ start_new_child(int pipes[])
 
     o_buff = buff;
 
-    flags = *(int*)buff;
-    buff += sizeof(int);
+    flags = get_int32(buff);
+    buff += sizeof(Sint32);
 
     DEBUG_PRINT("flags = %d", flags);
 
@@ -150,8 +150,8 @@ start_new_child(int pipes[])
 
     DEBUG_PRINT("wd = %s", wd);
 
-    cnt = *(int*)buff;
-    buff += sizeof(int);
+    cnt = get_int32(buff);
+    buff += sizeof(Sint32);
     new_environ = malloc(sizeof(char*)*(cnt + 1));
 
     for (i = 0; i < cnt; i++, buff++) {
@@ -162,8 +162,8 @@ start_new_child(int pipes[])
 
     if (o_buff + size != buff) {
         /* This is a spawn executable call */
-        cnt = *(int*)buff;
-        buff += sizeof(int);
+        cnt = get_int32(buff);
+        buff += sizeof(Sint32);
         args = malloc(sizeof(char*)*(cnt + 1));
         for (i = 0; i < cnt; i++, buff++) {
             args[i] = buff;
diff --git a/erts/emulator/sys/unix/sys_drivers.c b/erts/emulator/sys/unix/sys_drivers.c
index 8402197924..97a9c3dfaa 100644
--- a/erts/emulator/sys/unix/sys_drivers.c
+++ b/erts/emulator/sys/unix/sys_drivers.c
@@ -699,6 +699,7 @@ static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
         io_vector[i++].iov_len = sizeof(buffsz);
 
         io_vector[i].iov_base = (void*)&flags;
+        flags = htonl(flags);
         io_vector[i++].iov_len = sizeof(flags);
         buffsz += sizeof(flags);
 
@@ -715,6 +716,7 @@ static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
         buffsz += io_vector[i-1].iov_len;
 
         io_vector[i].iov_base = (void*)&env_len;
+        env_len = htonl(env_len);
         io_vector[i++].iov_len = sizeof(env_len);
         buffsz += io_vector[i-1].iov_len;
 
@@ -728,6 +730,7 @@ static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
         if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
 
             io_vector[i].iov_base = (void*)&argv_len;
+            argv_len = htonl(argv_len);
             io_vector[i++].iov_len = sizeof(argv_len);
             buffsz += io_vector[i-1].iov_len;