6.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: SeongJae Park <sj@xxxxxxxxxx> [ Upstream commit 732b8815c079199d29b0426d9372bb098c63cdc7 ] DAMON context staging method in _damon_sysfs.py is not checking the returned error from nr_schemes file read. Check it. Link: https://lkml.kernel.org/r/20240503180318.72798-3-sj@xxxxxxxxxx Fixes: f5f0e5a2bef9 ("selftests/damon/_damon_sysfs: implement kdamonds start function") Signed-off-by: SeongJae Park <sj@xxxxxxxxxx> Cc: Jonathan Corbet <corbet@xxxxxxx> Cc: Shuah Khan <shuah@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- tools/testing/selftests/damon/_damon_sysfs.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index d23d7398a27a8..fe77d7e73a25b 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -287,6 +287,8 @@ class DamonCtx: nr_schemes_file = os.path.join( self.sysfs_dir(), 'schemes', 'nr_schemes') content, err = read_file(nr_schemes_file) + if err is not None: + return err if int(content) != len(self.schemes): err = write_file(nr_schemes_file, '%d' % len(self.schemes)) if err != None: -- 2.43.0
