commit 9d4ec9370a36f8a564e1ba05519328c0bd60da13
author Michael S. Tsirkin <mst@redhat.com> Sun Oct 25 17:07:45 2015 +0200
committer Michael S. Tsirkin <mst@redhat.com> Thu Oct 29 11:05:24 2015 +0200
tree 0f306574ea8fb2d77fecf35f4f862e03dfdd5a0a
parent 4828b10bda6a74a22a7695303e0648157d0e3ea4

mmap-alloc: fix error handling

Existing callers are checking for MAP_FAILED,
so we should return that on error.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

util/mmap-alloc.c

diff --git a/util/mmap-alloc.c b/util/mmap-alloc.c
index 1394269..c37acbe 100644
--- a/util/mmap-alloc.c
+++ b/util/mmap-alloc.c
@@ -26,7 +26,7 @@
     void *ptr1;
 
     if (ptr == MAP_FAILED) {
-        return NULL;
+        return MAP_FAILED;
     }
 
     /* Make sure align is a power of 2 */
@@ -41,7 +41,7 @@
                 fd, 0);
     if (ptr1 == MAP_FAILED) {
         munmap(ptr, total);
-        return NULL;
+        return MAP_FAILED;
     }
 
     ptr += offset;