[PATCH] selftests: livepatch: set LC_ALL=C to fix locale-dependent test failure

[Qiang Ma]

When executing the command
"make -C tools/testing/selftests TARGETS=livepatch run_tests",
the following error message was reported.

TEST: livepatch interaction with ftrace_enabled sysctl ... not ok
...
livepatch: sysctlo
: setting key "kernel.ftrace_enabled": Device or resource busy
livepatch: sysctl: setting key "kernel.ftrace_enabled": 设备或资源忙
...
ERROR: livepatch kselftest(s) failed
not ok 5 selftests: livepatch: test-ftrace.sh # exit=1

To fix it, set LC_ALL=C.

Signed-off-by: Qiang Ma <maqianga@xxxxxxxxxxxxx>
---
 tools/testing/selftests/livepatch/functions.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh
index 8ec0cb64ad94..ecf27c1120f1 100644
--- a/tools/testing/selftests/livepatch/functions.sh
+++ b/tools/testing/selftests/livepatch/functions.sh
@@ -4,6 +4,8 @@
 
 # Shell functions for the rest of the scripts.
 
+export LC_ALL=C
+
 MAX_RETRIES=600
 RETRY_INTERVAL=".1"	# seconds
 SYSFS_KERNEL_DIR="/sys/kernel"
-- 
2.20.1