Patchwork [v3,resend,2/8] rdma: bugfix: ram_control_save_page()

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Submitter mrhines@linux.vnet.ibm.com
Date July 22, 2013, 2:01 p.m.
Message ID <1374501718-2581-3-git-send-email-mrhines@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/260725/
State New
Headers show

Comments

mrhines@linux.vnet.ibm.com - July 22, 2013, 2:01 p.m.
From: "Michael R. Hines" <mrhines@us.ibm.com>

We were not checking for a valid 'bytes_sent' pointer before accessing it.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
---
 savevm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/savevm.c b/savevm.c
index e0491e7..03fc4d9 100644
--- a/savevm.c
+++ b/savevm.c
@@ -662,7 +662,7 @@  size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
                                     offset, size, bytes_sent);
 
         if (ret != RAM_SAVE_CONTROL_DELAYED) {
-            if (*bytes_sent > 0) {
+            if (bytes_sent && *bytes_sent > 0) {
                 qemu_update_position(f, *bytes_sent);
             } else if (ret < 0) {
                 qemu_file_set_error(f, ret);