From 955f99e3ba60f43978f732804bbacdadbf1d8950 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alfonso=20S=C3=A1nchez-Beato?=
 <alfonso.sanchez-beato@canonical.com>
Date: Tue, 12 Nov 2024 10:02:17 -0500
Subject: [PATCH] tests: properly inject kernel failure for UC24

We were just appending to the snap-bootstrap binary instead of
replacing it. Fixes
google-nested:ubuntu-24.04-64:tests/nested/core/core20-kernel-failover:crash.
---
 tests/lib/prepare.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/lib/prepare.sh b/tests/lib/prepare.sh
index 6dc9dd68098..4660e463801 100755
--- a/tests/lib/prepare.sh
+++ b/tests/lib/prepare.sh
@@ -979,7 +979,7 @@ uc24_build_initramfs_kernel_snap() {
         chmod +x ./initrd/main/usr/lib/snapd/snap-bootstrap
         if [ "$injectKernelPanic" = "true" ]; then
             # add a kernel panic to the end of the-tool execution
-            echo "echo 'forcibly panicking'; echo c > /proc/sysrq-trigger" >> ./initrd/main/usr/lib/snapd/snap-bootstrap
+            echo "echo 'forcibly panicking'; echo c > /proc/sysrq-trigger" > ./initrd/main/usr/lib/snapd/snap-bootstrap
         fi
 
         (cd ./initrd/early; find . | cpio --create --quiet --format=newc --owner=0:0) >initrd.img