From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Sat, 19 Feb 2022 16:59:01 +0000 (+0000)
Subject: tests/resource: Initialise gnttab before xenforeignmemory_map_resource()
X-Git-Tag: archive/raspbian/4.17.0-1+rpi1^2~33^2~1002
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=39bcecb9a8fe25d3a1e372187d6358f25ffb06bb;p=xen.git

tests/resource: Initialise gnttab before xenforeignmemory_map_resource()

It's the 'addr' input to mmap(), and currently consuming stack rubble.

Coverity-ID: 1500115
Fixes: c7a7f14b9299 ("tests/resource: Extend to check that the grant frames are mapped correctly")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
---

diff --git a/tools/tests/resource/test-resource.c b/tools/tests/resource/test-resource.c
index 0557f8a1b5..189353ebcb 100644
--- a/tools/tests/resource/test-resource.c
+++ b/tools/tests/resource/test-resource.c
@@ -24,7 +24,7 @@ static void test_gnttab(uint32_t domid, unsigned int nr_frames,
                         unsigned long gfn)
 {
     xenforeignmemory_resource_handle *res;
-    grant_entry_v1_t *gnttab;
+    grant_entry_v1_t *gnttab = NULL;
     size_t size;
     int rc;
     uint32_t refs[nr_frames], domids[nr_frames];