From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 529363B2D38; Tue, 6 Oct 2026 09:25:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791278751; cv=none; b=RNgoYEqU0+R9zUYey6saeyQYaMegIxwRk47Tn/I8FD8YHwbP3BPIvE7zTX4txjD8SJnfEoqtIEMNPp861NhY8gNrz8hNFSBBgA+T3S0/Js604QWAJU1wVl+930n/wTBGLN0RgQd6rmXROuYen1xeqYKNNdJVJ9jRYVxtMvBrkt0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791278751; c=relaxed/simple; bh=OolFXI5b6+V9IEt20PEAQ7kIeCNm1VJ/qc/YBSWvXiY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KRaJoQj77W/dYqNu2XmNi1b0HI7zi6gbd0pV1FUw4PmWcReZg1P9nfa8sj+Cu+mReSFjK6uZN1FifyE8XKWcTtmpx4vFQeebfe2oyWMOh01LBwQ0T8dcBc/kpY4cccupWteTeqvXICxkhYcRWdTzAqW+waix1CtULMiw4Y1UBSo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=EDh2KI2S; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="EDh2KI2S" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 391D01477; Tue, 6 Oct 2026 02:25:46 -0700 (PDT) Received: from a081061.blr.arm.com (a081061.arm.com [10.164.19.84]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4D22D3F763; Tue, 6 Oct 2026 02:25:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1791278749; bh=OolFXI5b6+V9IEt20PEAQ7kIeCNm1VJ/qc/YBSWvXiY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EDh2KI2SzR/LKPdePGNyU26dIpRXbMZWkA6BKKpmjHL4USo1QLLvzerD7DrJ83McK 8F8EYKnHqrkAPqnuFr52pd8p4rEG8FkELCcrNQcvBZQYxcYQK9Pm40w01kAdncQps/ qH0mWl9UgE1dcOxT134lR+ONDnZ/0ZDK1ZdVTHR4= From: Sarthak Sharma To: akpm@linux-foundation.org, david@kernel.org Cc: ljs@kernel.org, liam@infradead.org, vbabka@suse.com, rppt@kernel.org, surenb@google.com, mhocko@suse.com, shuah@kernel.org, jhubbard@nvidia.com, kaleshsingh@google.com, anshuman.khandual@arm.com, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Sarthak Sharma Subject: [PATCH v2 05/12] selftests/mm: mremap_test: skip test when userfaultfd is unavailable Date: Tue, 6 Oct 2026 14:55:04 +0530 Message-ID: <20261006092511.145776-6-sarthak.sharma@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261006092511.145776-1-sarthak.sharma@arm.com> References: <20261006092511.145776-1-sarthak.sharma@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The userfaultfd syscall can return ENOSYS even when __NR_userfaultfd is defined by the architecture headers, for example when the kernel is built without CONFIG_USERFAULTFD. The test currently skips for EPERM when the caller lacks permission to use userfaultfd but treats ENOSYS as a failure. Handle ENOSYS like EPERM and skip the mremap_move_multi_invalid_vmas() test when userfaultfd syscall is not implemented. Fixes: 742d3663a577 ("selftests/mm: add test for invalid multi VMA operations") Acked-by: David Hildenbrand (Arm) Signed-off-by: Sarthak Sharma --- tools/testing/selftests/mm/mremap_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c index e17edbc23325..0be47348ecd0 100644 --- a/tools/testing/selftests/mm/mremap_test.c +++ b/tools/testing/selftests/mm/mremap_test.c @@ -711,7 +711,7 @@ static void mremap_move_multi_invalid_vmas(FILE *maps_fp, uffd = syscall(__NR_userfaultfd, O_NONBLOCK); if (uffd == -1) { - if (errno == EPERM) { + if (errno == EPERM || errno == ENOSYS) { ksft_test_result_skip("%s - missing uffd\n", test_name); return; } -- 2.53.0