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Tue, 17 Mar 2026 04:45:54 -0700 (PDT) Received: from localhost.localdomain ([110.44.115.138]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b05f0ab17asm68444425ad.37.2026.03.17.04.45.52 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 17 Mar 2026 04:45:54 -0700 (PDT) From: Shuvam Pandey To: Petr Mladek , Steven Rostedt Cc: Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , linux-kernel@vger.kernel.org Subject: [PATCH] printf: add IPv6 address format tests Date: Tue, 17 Mar 2026 17:30:48 +0545 Message-ID: <20260317114548.98919-1-shuvampandey1@gmail.com> X-Mailer: git-send-email 2.50.1 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" printf_kunit already covers IPv4 address formatting, but the ip6() test case is empty even though printk-formats.rst documents %pI6, %pi6, %pI6c, and generic %pIS variants. Add focused IPv6 checks for raw and generic formatting, compressed output, the single-zero %pI6c corner case, and bracketed port formatting for sockaddr_in6. Validated with the arm64 printf KUnit suite and a W=3D1 rebuild of lib/tests/printf_kunit.o. Signed-off-by: Shuvam Pandey Reviewed-by: Andy Shevchenko --- lib/tests/printf_kunit.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/lib/tests/printf_kunit.c b/lib/tests/printf_kunit.c index c64bfe79652e..739c755dd1ab 100644 --- a/lib/tests/printf_kunit.c +++ b/lib/tests/printf_kunit.c @@ -17,6 +17,7 @@ #include #include #include +#include =20 #include #include @@ -437,6 +438,27 @@ ip4(struct kunit *kunittest) static void ip6(struct kunit *kunittest) { + const struct in6_addr addr =3D { + .s6_addr =3D { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, + 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 } + }; + const struct in6_addr single_zero =3D { + .s6_addr =3D { 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x04, + 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 } + }; + struct sockaddr_in6 sa =3D { + .sin6_family =3D AF_INET6, + .sin6_port =3D cpu_to_be16(12345), + .sin6_addr =3D addr, + }; + + test("00010002000300040005000600070008|0001:0002:0003:0004:0005:0006:0007= :0008", + "%pi6|%pI6", &addr, &addr); + test("00010002000300040005000600070008|0001:0002:0003:0004:0005:0006:0007= :0008", + "%piS|%pIS", &sa, &sa); + test("1:2:3:4:5:6:7:8", "%pI6c", &addr); + test("1:0:3:4:5:6:7:8", "%pI6c", &single_zero); + test("[1:2:3:4:5:6:7:8]:12345", "%pISpc", &sa); } =20 static void --=20 2.50.1 (Apple Git-155)