added error checking to outs operation

diff --git a/palacios/src/palacios/svm_io.c b/palacios/src/palacios/svm_io.c
index aaa6101..93038c6 100644 (file)
--- a/palacios/src/palacios/svm_io.c
+++ b/palacios/src/palacios/svm_io.c
@@ -359,12 +359,13 @@ int v3_handle_svm_io_outs(struct guest_info * core, struct svm_io_info * io_info
     PrintDebug("OUTS size=%d for %d steps\n", write_size, rep_num);
 
     while (rep_num > 0) {
-       addr_t host_addr;
+       addr_t host_addr = 0;
 
        dst_addr = get_addr_linear(core, (core->vm_regs.rsi & mask), theseg);
     
        if (v3_gva_to_hva(core, dst_addr, &host_addr) == -1) {
-           // either page fault or gpf...
+           PrintError("Could not translate outs dest addr, either page fault or gpf...\n");
+           return -1;
        }
 
        if (hook->write(core, io_info->port, (char*)host_addr, write_size, hook->priv_data) != write_size) {