From patchwork Wed Dec 5 09:35:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sasha Levin X-Patchwork-Id: 10713547 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4CD0F18B8 for ; Wed, 5 Dec 2018 09:43:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3F1762CCD8 for ; Wed, 5 Dec 2018 09:43:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3299F2CCF9; Wed, 5 Dec 2018 09:43:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D573E2CCD8 for ; Wed, 5 Dec 2018 09:43:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728776AbeLEJme (ORCPT ); Wed, 5 Dec 2018 04:42:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:47136 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728038AbeLEJmd (ORCPT ); Wed, 5 Dec 2018 04:42:33 -0500 Received: from sasha-vm.mshome.net (unknown [213.57.143.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7D58620850; Wed, 5 Dec 2018 09:42:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544002952; bh=QDx8YnEdylUcYj+aBeIWlfrECI+eDkZY74B8NGKWB9E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tn86oeBtelJilg1avsGgZgZT5rFnFFEAwLfRp8B7/u6qrcf4fSzwtMZ2zOohVlnGl S2c9JWCEFupxMRL0Al7kZcfVR3pkK7P+JGwvhMp786yvkIAA8vDyRDxmVS/H0QmiF0 Y1l75lgJrpgVA96rzo5uvXs9ILpxP6nCGFj8bhH0= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Alexey Dobriyan , Shuah Khan , Andrew Morton , Linus Torvalds , Sasha Levin , linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 120/123] proc: fixup map_files test on arm Date: Wed, 5 Dec 2018 04:35:52 -0500 Message-Id: <20181205093555.5386-120-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181205093555.5386-1-sashal@kernel.org> References: <20181205093555.5386-1-sashal@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Alexey Dobriyan [ Upstream commit dbd4af54745fc0c805217693c807a3928b2d408b ] https://bugs.linaro.org/show_bug.cgi?id=3782 Turns out arm doesn't permit mapping address 0, so try minimum virtual address instead. Link: http://lkml.kernel.org/r/20181113165446.GA28157@avx2 Signed-off-by: Alexey Dobriyan Reported-by: Rafael David Tinoco Tested-by: Rafael David Tinoco Acked-by: Cyrill Gorcunov Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- tools/testing/selftests/proc/proc-self-map-files-002.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/proc/proc-self-map-files-002.c b/tools/testing/selftests/proc/proc-self-map-files-002.c index 6f1f4a6e1ecb..85744425b08d 100644 --- a/tools/testing/selftests/proc/proc-self-map-files-002.c +++ b/tools/testing/selftests/proc/proc-self-map-files-002.c @@ -13,7 +13,7 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -/* Test readlink /proc/self/map_files/... with address 0. */ +/* Test readlink /proc/self/map_files/... with minimum address. */ #include #include #include @@ -47,6 +47,11 @@ static void fail(const char *fmt, unsigned long a, unsigned long b) int main(void) { const unsigned int PAGE_SIZE = sysconf(_SC_PAGESIZE); +#ifdef __arm__ + unsigned long va = 2 * PAGE_SIZE; +#else + unsigned long va = 0; +#endif void *p; int fd; unsigned long a, b; @@ -55,7 +60,7 @@ int main(void) if (fd == -1) return 1; - p = mmap(NULL, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE|MAP_FIXED, fd, 0); + p = mmap((void *)va, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE|MAP_FIXED, fd, 0); if (p == MAP_FAILED) { if (errno == EPERM) return 2;