From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C763EEA853A for ; Sun, 8 Mar 2026 17:31:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vzHyY-0005Kt-8X; Sun, 08 Mar 2026 13:31:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vzHxG-0003na-Cz for qemu-devel@nongnu.org; Sun, 08 Mar 2026 13:30:15 -0400 Received: from tor.source.kernel.org ([172.105.4.254]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vzHxB-00041m-NF for qemu-devel@nongnu.org; Sun, 08 Mar 2026 13:30:11 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 93B15600AE; Sun, 8 Mar 2026 17:30:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33DB7C116C6; Sun, 8 Mar 2026 17:30:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772991008; bh=fGNhZhGwYx5O0WsKa+ya31k08B1YR0SmQJGqiNNdM0g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ssD8s+UuBlY5JD6gEBxm74gnSZh6a3kbxZPzVHQ87sVmG5JbxcM7XX94L37LBGs3C DS1UExBdbJkOuv+qyLrEjpqA9XaJwQeCwl9H/gdEgEb/+x4sN13uUbkg+poH8KJGQO dSrbgZ67NjtGJPrVFYfHAT2TV2fX5wOWQjvUVQfOs0u9B/efC6qkpUoglL08tU8rld snuGH/uoJfR/xmnSUFqCXwb8Woc7nUb/Vn8DooZaEULp9VVdphRzxDfRfyGs6CvB/J N890mew6Rf0N4AvXtbkP8XJydgyEDOYVwQCPxGnpOOpDY6OR6cex+2MxnssNbHVFPO +Ff2B2foaOx9g== From: deller@kernel.org To: qemu-devel@nongnu.org Cc: Kyle Evans , Paolo Bonzini , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Laurent Vivier , Warner Losh , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , deller@gmx.de, Richard Henderson , Pierrick Bouvier Subject: [PULL 11/12] tests/tcg/multiarch/test-mmap: Check mmaps beyond reserved_va Date: Sun, 8 Mar 2026 18:29:35 +0100 Message-ID: <20260308172936.2835-12-deller@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260308172936.2835-1-deller@kernel.org> References: <20260308172936.2835-1-deller@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=172.105.4.254; envelope-from=deller@kernel.org; helo=tor.source.kernel.org X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Bingwu Zhang Unfixed mmap calls where start > reserved_va or the max guest addr should have a valid result. Signed-off-by: Bingwu Zhang Signed-off-by: Helge Deller --- tests/tcg/multiarch/test-mmap.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tests/tcg/multiarch/test-mmap.c b/tests/tcg/multiarch/test-mmap.c index 88f7a04101..2bfa529127 100644 --- a/tests/tcg/multiarch/test-mmap.c +++ b/tests/tcg/multiarch/test-mmap.c @@ -497,6 +497,20 @@ void check_shrink_mmaps(void) fprintf(stdout, " passed\n"); } +void check_mmaps_beyond_addr_space(void) +{ + unsigned char *addr; + addr = mmap((void *)(-(unsigned long)pagesize * 10), pagesize * 2, + PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fprintf(stdout, "%s addr=%p errno=%d", __func__, (void *)addr, errno); + fail_unless(addr != MAP_FAILED); + + memcpy(dummybuf, addr, 2 * pagesize); + munmap(addr, 2 * pagesize); + + fprintf(stdout, " passed\n"); +} + int main(int argc, char **argv) { char tempname[] = "/tmp/.cmmapXXXXXX"; @@ -540,6 +554,7 @@ int main(int argc, char **argv) check_file_unfixed_eof_mmaps(); check_invalid_mmaps(); check_shrink_mmaps(); + check_mmaps_beyond_addr_space(); /* Fails at the moment. */ /* check_aligned_anonymous_fixed_mmaps_collide_with_host(); */ -- 2.53.0