From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 69-171-232-181.mail-mxout.facebook.com (69-171-232-181.mail-mxout.facebook.com [69.171.232.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A4C501E2602 for ; Fri, 6 Jun 2025 21:31:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=69.171.232.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749245471; cv=none; b=LZUZDrb/HX3O1mEbc//qdKVMc7gS/COnj5g1yJgZWfJtiGWRi///Q9dpJ95K7an32rI+AG5eP4IIl52zim2eJsoNGWCdAzduqP9ZRx+yUZhwMjyz7hDo+S1CQwNv3ezGsu3WS2G05rfftXHCf5QNSzA3uE8WMwWBN0xZfEfQMTU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749245471; c=relaxed/simple; bh=5X4KtSXE65HbJUqdwkwuwl8cJgNXO8AWqJgsXCObhPo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YcOOpIWal7mE/94fncPbSH0/fkoL04gghCoM96387JyDq7x3/438weM/W5v+izjL+6IO4HvMgLIkMP/ApURdfVrPFz64GSlbRXW+vetPcJPFTeeVN6IB0nNCU+yAfvXCyR1dxR87hRMDIelr7tAr9eqEHDYtTz5IocyqAR48CmM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.dev; spf=fail smtp.mailfrom=linux.dev; arc=none smtp.client-ip=69.171.232.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=linux.dev Received: by devvm16039.vll0.facebook.com (Postfix, from userid 128203) id 47BB3906E22C; Fri, 6 Jun 2025 14:30:58 -0700 (PDT) From: Yonghong Song To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , kernel-team@fb.com, Martin KaFai Lau Subject: [PATCH bpf-next v3 2/4] selftests/bpf: Fix bpf_mod_race test failure with arm64 64KB page size Date: Fri, 6 Jun 2025 14:30:58 -0700 Message-ID: <20250606213058.340725-1-yonghong.song@linux.dev> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250606213048.340421-1-yonghong.song@linux.dev> References: <20250606213048.340421-1-yonghong.song@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Currently, uffd_register.range.len is set to 4096 for command 'ioctl(uffd, UFFDIO_REGISTER, &uffd_register)'. For arm64 64KB page size, the len must be 64KB size aligned as page size alignment is required. See fs/userfaultfd.c:validate_unaligned_range(). Signed-off-by: Yonghong Song --- tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c b/tool= s/testing/selftests/bpf/prog_tests/bpf_mod_race.c index fe2c502e5089..ecc3d47919ad 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c @@ -78,7 +78,7 @@ static int test_setup_uffd(void *fault_addr) } =20 uffd_register.range.start =3D (unsigned long)fault_addr; - uffd_register.range.len =3D 4096; + uffd_register.range.len =3D getpagesize(); uffd_register.mode =3D UFFDIO_REGISTER_MODE_MISSING; if (ioctl(uffd, UFFDIO_REGISTER, &uffd_register)) { close(uffd); --=20 2.47.1