linux-kernel - [PATCH v4 3/5] fs/exec: use strscpy instead of strlcpy in __set_task

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Date:   Wed, 13 Oct 2021 10:23:44 +0000
From:   Yafang Shao <laoar.shao@...il.com>
To:     keescook@...omium.org, rostedt@...dmis.org, peterz@...radead.org,
        pmladek@...e.com, viro@...iv.linux.org.uk,
        akpm@...ux-foundation.org, valentin.schneider@....com,
        mathieu.desnoyers@...icios.com, qiang.zhang@...driver.com,
        robdclark@...omium.org, christian@...uner.io,
        dietmar.eggemann@....com, mingo@...hat.com, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, davem@...emloft.net, kuba@...nel.org
Cc:     linux-kernel@...r.kernel.org, Yafang Shao <laoar.shao@...il.com>
Subject: [PATCH v4 3/5] fs/exec: use strscpy instead of strlcpy in __set_task_comm

Fix a warning by checkpatch -
WARNING: Prefer strscpy over strlcpy - see: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/

Signed-off-by: Yafang Shao <laoar.shao@...il.com>
Acked-by: Kees Cook <keescook@...omium.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Al Viro <viro@...iv.linux.org.uk>
Cc: Petr Mladek <pmladek@...e.com>
---
 fs/exec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/exec.c b/fs/exec.c
index a098c133d8d7..de804c566200 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1224,7 +1224,7 @@ void __set_task_comm(struct task_struct *tsk, const char *buf, bool exec)
 {
 	task_lock(tsk);
 	trace_task_rename(tsk, buf);
-	strlcpy(tsk->comm, buf, sizeof(tsk->comm));
+	strscpy(tsk->comm, buf, sizeof(tsk->comm));
 	task_unlock(tsk);
 	perf_event_comm(tsk, exec);
 }
-- 
2.17.1