vhost: fix the memory leak which will happen when memory_access_ok fails
We need to free newmem when vhost_set_memory() fails to complete.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index e366202..da21ae9 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -337,8 +337,10 @@
return -EFAULT;
}
- if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL)))
+ if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL))) {
+ kfree(newmem);
return -EFAULT;
+ }
oldmem = d->memory;
rcu_assign_pointer(d->memory, newmem);
synchronize_rcu();