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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan Cc: netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Ankit Khushwaha Subject: [PATCH] selftest: net: fix socklen_t type mismatch in sctp_collision test Date: Sun, 26 Oct 2025 23:16:49 +0530 Message-ID: <20251026174649.276515-1-ankitkhushwaha.linux@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Socket APIs like recvfrom(), accept(), and getsockname() expect socklen_t* arg, but tests were using int variables. This causes -Wpointer-sign=20 warnings on platforms where socklen_t is unsigned. Change the variable type from int to socklen_t to resolve the warning and ensure type safety across platforms. warning fixed: sctp_collision.c:62:70: warning: passing 'int *' to parameter of=20 type 'socklen_t *' (aka 'unsigned int *') converts between pointers to=20 integer types with different sign [-Wpointer-sign] 62 | ret =3D recvfrom(sd, buf, sizeof(buf),=20 0, (struct sockaddr *)&daddr, &len); | ^~~~ /usr/include/sys/socket.h:165:27: note: passing argument to=20 parameter '__addr_len' here 165 | socklen_t *__restrict __addr_len); | ^ Signed-off-by: Ankit Khushwaha Reviewed-by: Muhammad Usama Anjum --- tools/testing/selftests/net/netfilter/sctp_collision.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/netfilter/sctp_collision.c b/tools= /testing/selftests/net/netfilter/sctp_collision.c index 21bb1cfd8a85..91df996367e9 100644 --- a/tools/testing/selftests/net/netfilter/sctp_collision.c +++ b/tools/testing/selftests/net/netfilter/sctp_collision.c @@ -9,7 +9,8 @@ int main(int argc, char *argv[]) { struct sockaddr_in saddr =3D {}, daddr =3D {}; - int sd, ret, len =3D sizeof(daddr); + int sd, ret; + socklen_t len =3D sizeof(daddr); struct timeval tv =3D {25, 0}; char buf[] =3D "hello"; =20 --=20 2.51.0