From nobody Tue Feb 10 06:44:50 2026 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 531F0144D22; Tue, 23 Apr 2024 22:15:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713910538; cv=none; b=QtEZD+/B/2NgyYjhay+pvM6/9semsyLwregLBLVrsZy56oBCvCUhSy0LqNZ1okTi2rG3UJoBBj7uqdo3Sykl8R3XgxVL/IrXtz3a3biMiNqgf383hmFbRbmGFtAD7b2+vbX0g203FZn2LQfknHg9LPY1o5CGbiVSnTmMA9+8rkw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713910538; c=relaxed/simple; bh=v/uHqDbYyNczx9qU8qaftsOIwKU/Btebsep5aBORjOg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=cwWuRT4ecN9CMPcsUTaw0dCzoT5JBb7i0d9AtwnGDCO4J2HyCLeIVjzOr8rXgxJc4N2m8RHr8BRYedChN/AnYdIpj+zpxHMDhKajeXi27w8UqXetc2PHjyeKG7mB6jTNbzz2qEjDeL0IKNB28sZm3Xm8uBgh/Fzsj4ULf+FkBWc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=c5lFi0A+; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="c5lFi0A+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1713910534; bh=v/uHqDbYyNczx9qU8qaftsOIwKU/Btebsep5aBORjOg=; h=From:Date:Subject:To:Cc:From; b=c5lFi0A+wfLcN1/dShqW4qOhOTT1SghvqtlqBpGL70e+NXkkIrwzNnaHsdUBFMtNx PF+s6WRQ3p4pZUyUJrA1aqTOaDCOe3A3TNlkIkxtxrVzj5IqjZfCTye5zsuriDMaXZ s0ZNNyuSU7Qhqcg96XEbVl3rZ8MtqREMRqFmlGBg= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Wed, 24 Apr 2024 00:15:33 +0200 Subject: [PATCH] selftests/nolibc: disable brk()/sbrk() tests on musl Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240424-nolibc-musl-brk-v1-1-b49882dd9a93@weissschuh.net> X-B4-Tracking: v=1; b=H4sIAAQzKGYC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIxMDEyNj3bz8nMykZN3c0uIc3aSibF1zcwuTxJQUI0sLA0MloK6CotS0zAq widGxtbUA0FOv9mEAAAA= To: Willy Tarreau , Shuah Khan Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1713910533; l=2481; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=v/uHqDbYyNczx9qU8qaftsOIwKU/Btebsep5aBORjOg=; b=HPqnlAQGaiCRLb87BWAbrmaCSgNyiByABLLXZDgndTFSn2JzyeLNju53F/FMVRc+4quBbAQ52 bqCWZ8eV666C535FvzSZ2suQKGa8mWgix3T6tZE0ftG24Q6NnfO7WKh X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= On musl calls to brk() and sbrk() always fail with ENOMEM. Detect this and skip the tests on musl. Tested on glibc 2.39 and musl 1.2.5 in addition to nolibc. Signed-off-by: Thomas Wei=C3=9Fschuh --- tools/testing/selftests/nolibc/nolibc-test.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/s= elftests/nolibc/nolibc-test.c index 94bb6e11c16f..89be9ba95179 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -942,6 +942,7 @@ int run_syscall(int min, int max) int ret =3D 0; void *p1, *p2; int has_gettid =3D 1; + int has_brk; =20 /* indicates whether or not /proc is mounted */ proc =3D stat("/proc", &stat_buf) =3D=3D 0; @@ -954,6 +955,9 @@ int run_syscall(int min, int max) has_gettid =3D __GLIBC__ > 2 || (__GLIBC__ =3D=3D 2 && __GLIBC_MINOR__ >= =3D 30); #endif =20 + /* on musl setting brk()/sbrk() always fails */ + has_brk =3D brk(0) =3D=3D 0; + for (test =3D min; test >=3D 0 && test <=3D max; test++) { int llen =3D 0; /* line length */ =20 @@ -969,9 +973,9 @@ int run_syscall(int min, int max) CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRC= H); break; - CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); brea= k; - CASE_TEST(sbrk); if ((p1 =3D p2 =3D sbrk(4096)) !=3D (void = *)-1) p2 =3D sbrk(-4096); EXPECT_SYSZR(1, (p2 =3D=3D (void *)-1) || p2 =3D= =3D p1); break; - CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; + CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1)= ; break; + CASE_TEST(sbrk); if ((p1 =3D p2 =3D sbrk(4096)) !=3D (void = *)-1) p2 =3D sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 =3D=3D (void *)-1) || p= 2 =3D=3D p1); break; + CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break; CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv(= "PWD")); break; CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT= ); break; --- base-commit: 0adab2b6b7336fb6ee3c6456a432dad3b1d25647 change-id: 20240423-nolibc-musl-brk-7784add29801 Best regards, --=20 Thomas Wei=C3=9Fschuh