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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, Justin Stitt Content-Type: text/plain; charset="utf-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable `strncpy` is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. ethtool_sprintf() is designed specifically for get_strings() usage. Let's replace strncpy in favor of this more robust and easier to understand interface. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncp= y-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.htm= l [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt Reviewed-by: Florian Fainelli Reviewed-by: Vladimir Oltean --- Note: build-tested only. --- drivers/net/dsa/realtek/rtl8365mb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/= rtl8365mb.c index 41ea3b5a42b1..d171c18dd354 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -1303,8 +1303,7 @@ static void rtl8365mb_get_strings(struct dsa_switch *= ds, int port, u32 stringset =20 for (i =3D 0; i < RTL8365MB_MIB_END; i++) { struct rtl8365mb_mib_counter *mib =3D &rtl8365mb_mib_counters[i]; - - strncpy(data + i * ETH_GSTRING_LEN, mib->name, ETH_GSTRING_LEN); + ethtool_sprintf(&data, "%s", mib->name); } } =20 --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231009-strncpy-drivers-net-dsa-realtek-rtl8365mb-c-bb106e4c110c Best regards, -- Justin Stitt