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[v7,7/8] net: Replace strcpy() with strscpy()

Message ID 20240817025624.13157-8-laoar.shao@gmail.com (mailing list archive)
State Handled Elsewhere
Delegated to: Paul Moore
Headers show
Series Improve the copy of task comm | expand

Commit Message

Yafang Shao Aug. 17, 2024, 2:56 a.m. UTC 
To prevent errors from occurring when the src string is longer than the dst
string in strcpy(), we should use strscpy() instead. This approach
also facilitates future extensions to the task comm.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: David Ahern <dsahern@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
---
 net/ipv6/ndisc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 254b192c5705..17f2e787e6f8 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1942,7 +1942,7 @@  static void ndisc_warn_deprecated_sysctl(const struct ctl_table *ctl,
 	static char warncomm[TASK_COMM_LEN];
 	static int warned;
 	if (strcmp(warncomm, current->comm) && warned < 5) {
-		strcpy(warncomm, current->comm);
+		strscpy(warncomm, current->comm);
 		pr_warn("process `%s' is using deprecated sysctl (%s) net.ipv6.neigh.%s.%s - use net.ipv6.neigh.%s.%s_ms instead\n",
 			warncomm, func,
 			dev_name, ctl->procname,