Thread (4 messages) 4 messages, 2 authors, 2020-05-07

[PATCH RE-SEND v1] PM / devfreq: Replace strncpy with strscpy

flat view
STALE2349d

From: Dmitry Osipenko <digetx@gmail.com>
Date: 2020-02-27 17:09:30
Also in: lkml
Subsystem: device frequency (devfreq), the rest · Maintainers: MyungJoo Ham, Kyungmin Park, Chanwoo Choi, Linus Torvalds

GCC produces this warning when kernel compiled using `make W=1`:

  warning: ‘strncpy’ specified bound 16 equals destination size [-Wstringop-truncation]
  772 |  strncpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN);

The strncpy doesn't take care of NULL-termination of the destination
buffer, while the strscpy does.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/devfreq/devfreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 8494c5f05a73..2011f64bfa3a 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -769,7 +769,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
 	devfreq->dev.release = devfreq_dev_release;
 	INIT_LIST_HEAD(&devfreq->node);
 	devfreq->profile = profile;
-	strncpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN);
+	strscpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN);
 	devfreq->previous_freq = profile->initial_freq;
 	devfreq->last_status.current_frequency = profile->initial_freq;
 	devfreq->data = data;
-- 
2.24.0
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help