From: Bobby Eshleman <bobbyeshleman@meta.com>

Add the definition for BUILD and initialize it to zero. This avoids
'bash -u vmtest.sh` from throwing 'unbound variable' when BUILD is not
set to 1 and is later checked for its value.

Fixes: a4a65c6fe08b ("selftests/vsock: add initial vmtest.sh for vsock")
Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
---
 tools/testing/selftests/vsock/vmtest.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/vsock/vmtest.sh b/tools/testing/selftests/vsock/vmtest.sh
index a728958c58ee..a312930cb8b7 100755
--- a/tools/testing/selftests/vsock/vmtest.sh
+++ b/tools/testing/selftests/vsock/vmtest.sh
@@ -541,6 +541,7 @@ run_shared_vm_test() {
 	return "${rc}"
 }
 
+BUILD=0
 QEMU="qemu-system-$(uname -m)"
 
 while getopts :hvsq:b o

-- 
2.47.3

On Wed, Oct 22, 2025 at 06:00:13PM -0700, Bobby Eshleman wrote:
> From: Bobby Eshleman <bobbyeshleman@meta.com>
> 
> Add the definition for BUILD and initialize it to zero. This avoids
> 'bash -u vmtest.sh` from throwing 'unbound variable' when BUILD is not
> set to 1 and is later checked for its value.
> 
> Fixes: a4a65c6fe08b ("selftests/vsock: add initial vmtest.sh for vsock")
> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>

Hi Bobby,

I think that if this is a fix for the cited commit,
which is present in net, then this patch should
be targeted at net rather than net-next.

...