netdev - [PATCH v4 08/11] tsacct: Replace strncpy() with __get_task

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Message-Id: <20240628090517.17994-8-laoar.shao@gmail.com>
Date: Fri, 28 Jun 2024 17:05:14 +0800
From: Yafang Shao <laoar.shao@...il.com>
To: torvalds@...ux-foundation.org,
	laoar.shao@...il.com
Cc: akpm@...ux-foundation.org,
	alexei.starovoitov@...il.com,
	audit@...r.kernel.org,
	bpf@...r.kernel.org,
	catalin.marinas@....com,
	dri-devel@...ts.freedesktop.org,
	ebiederm@...ssion.com,
	linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org,
	linux-security-module@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	penguin-kernel@...ove.sakura.ne.jp,
	rostedt@...dmis.org,
	selinux@...r.kernel.org
Subject: [PATCH v4 08/11] tsacct: Replace strncpy() with __get_task_comm()

Using __get_task_comm() to read the task comm ensures that the name is
always NUL-terminated, regardless of the source string. This approach also
facilitates future extensions to the task comm.

Signed-off-by: Yafang Shao <laoar.shao@...il.com>
---
 kernel/tsacct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 4252f0645b9e..6b094d5d9135 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -76,7 +76,7 @@ void bacct_add_tsk(struct user_namespace *user_ns,
 	stats->ac_minflt = tsk->min_flt;
 	stats->ac_majflt = tsk->maj_flt;
 
-	strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
+	__get_task_comm(stats->ac_comm, sizeof(stats->ac_comm), tsk);
 }
 
 
-- 
2.43.5