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 9B7DDC5AE59 for ; Thu, 5 Jun 2025 14:47:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uNBsZ-0005cg-Sa; Thu, 05 Jun 2025 10:47:39 -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 1uNBrO-0005Vm-0G for qemu-devel@nongnu.org; Thu, 05 Jun 2025 10:46:26 -0400 Received: from m16.mail.163.com ([117.135.210.5]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uNBrK-0000ZG-HV for qemu-devel@nongnu.org; Thu, 05 Jun 2025 10:46:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=Wb QUc+TddGyYGAA9DJxEdBCR8n6wzab7EGx9y/VtN2M=; b=jhuYiz/ECFqKvj3vBj sK12lhIVcXF825/Zw/XH9YJwXEp7AkbmdTMPGQgYSmNKelOfXas81m4a/mJ82SIX o7lUc+vSuOBBkAfreYntTy+jwVH6OGO/kJGiRW8m21IGhN8CzzSS8ky2DE4Yu1MS HIOKMepC+vdkW2VvgzZ4NjSDQ= Received: from zhanghe-System-Product-Name.. (unknown []) by gzga-smtp-mtada-g1-0 (Coremail) with SMTP id _____wCHKeOurUFos7y8Gg--.27062S2; Thu, 05 Jun 2025 22:46:07 +0800 (CST) From: Zhang He To: laurent@vivier.eu Cc: qemu-devel@nongnu.org, Zhang He Subject: [PATCH] Fixes: failed to call mq_open/mq_unlink in qemu-arm Date: Thu, 5 Jun 2025 22:46:03 +0800 Message-ID: <20250605144603.17475-1-zhanghe9702@163.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: _____wCHKeOurUFos7y8Gg--.27062S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7GF1DXr4rtF1xJF1Uur17Jrb_yoWDKrX_ur W7try7GFWUCa9rZ3WfKw45Ar4av348JF4IqFn8KrW2yr4xJr93JasYvr9Yyr43uFW09wsI ga4kX3W09r1SvjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRRLZ23UUUUU== X-Originating-IP: [183.14.214.161] X-CM-SenderInfo: x2kd0wlkhzliqs6rljoofrz/1tbiWwljamhBrEovHQAAsm Received-SPF: pass client-ip=117.135.210.5; envelope-from=zhanghe9702@163.com; helo=m16.mail.163.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Thu, 05 Jun 2025 10:47:38 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 i write some bare-metal c code need mq_open/mq_unlink syscall, but the syscall failed in passed name param check, arg1 in this scenario is the correct address from user-space, arg1 - 1 not. i have tested in arm cortex-m55 cpu model, maybe should add conditional compile macro? Signed-off-by: Zhang He --- linux-user/syscall.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index fc37028597..be9610176a 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -13058,7 +13058,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, } pposix_mq_attr = &posix_mq_attr; } - p = lock_user_string(arg1 - 1); + p = lock_user_string(arg1); if (!p) { return -TARGET_EFAULT; } @@ -13068,7 +13068,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, return ret; case TARGET_NR_mq_unlink: - p = lock_user_string(arg1 - 1); + p = lock_user_string(arg1); if (!p) { return -TARGET_EFAULT; } -- 2.43.0