From nobody Tue Dec 16 21:25:28 2025 Received: from canpmsgout03.his.huawei.com (canpmsgout03.his.huawei.com [113.46.200.218]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EACE43321BB; Thu, 4 Dec 2025 08:21:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.218 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764836518; cv=none; b=VFf5jDwjExJuZi8M6pxI7T3vNPhRz+mEQ0rgFbA7pOnryhHA/G5ZcZnYfe/hLPYw6LXmDmxfKxkMcWuSE9g/lom7iYt8VH3deZQMz1tI2BySjs4Rx3CBIVs7GWiXoi81/o4eUGuCdTPcNvFcQaXkKMbM/AqonkQMFsRvD1KZaSI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764836518; c=relaxed/simple; bh=ny8aDPURy1VXKbQhwyDp9EKmL3PMvF2nUjM9QvbOqXg=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=M/YGDiQ3okQ43sgngvXRjugd2qXs0b2X+YDYowmSjHXy1ho4J1xNhh7Yq5DU/H3qhSRyPhEvgF+1AHc8j7cTubs56dc1l40AVZiJzfu2aWPHf78XmoaF7YbNgXckQnYLXMiRq0P4IRDnwJ2A71Dm9sVC1Zqme7OV6zi+vrSKcI0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=Ev6Mhpca; arc=none smtp.client-ip=113.46.200.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="Ev6Mhpca" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=dUB5svHzwWtU/ehADg2wSUDPJYFHtQvKQU+SkZzdhs8=; b=Ev6MhpcaD5VUlK9FtsDgN/OFnaVaHQXtorpXV35aYRw7knatSXZpcwC5nVDgPU8YanyOwMQcF tpcRGaVmLQljWvnCmCEmybWXhlbxjtFbp/WvQTf3opOGlo/lRYVmVA7/hPZAlEgSQwYj6zG4ugn RGYY+e22DUA2aYvXIWCWEhA= Received: from mail.maildlp.com (unknown [172.19.163.48]) by canpmsgout03.his.huawei.com (SkyGuard) with ESMTPS id 4dMS914p1PzpTHV; Thu, 4 Dec 2025 16:19:33 +0800 (CST) Received: from dggpemf500011.china.huawei.com (unknown [7.185.36.131]) by mail.maildlp.com (Postfix) with ESMTPS id BAADC180485; Thu, 4 Dec 2025 16:21:54 +0800 (CST) Received: from huawei.com (10.90.53.73) by dggpemf500011.china.huawei.com (7.185.36.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 4 Dec 2025 16:21:53 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH v9 10/16] arm64/ptrace: Use syscall_get_arguments() helper Date: Thu, 4 Dec 2025 16:21:17 +0800 Message-ID: <20251204082123.2792067-11-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251204082123.2792067-1-ruanjinjie@huawei.com> References: <20251204082123.2792067-1-ruanjinjie@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems200002.china.huawei.com (7.221.188.68) To dggpemf500011.china.huawei.com (7.185.36.131) Content-Type: text/plain; charset="utf-8" The generic entry check audit context first and use syscall_get_arguments() helper. In order to switch to the generic entry for arm64, - Also use syscall_get_arguments() to get audit_syscall_entry()'s last four parameters. - Extract the syscall_enter_audit() helper to make it clear. - Check audit context first, which saves an unnecessary memcpy when current process's audit_context is NULL. Overall these changes make syscall_enter_audit() exactly equivalent to the generic one. No functional changes. Reviewed-by: Kevin Brodsky Signed-off-by: Jinjie Ruan --- arch/arm64/kernel/ptrace.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index c6dee8a355e5..36e7ba3f38a5 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -2381,6 +2381,16 @@ static void report_syscall_exit(struct pt_regs *regs) } } =20 +static inline void syscall_enter_audit(struct pt_regs *regs, long syscall) +{ + if (unlikely(audit_context())) { + unsigned long args[6]; + + syscall_get_arguments(current, regs, args); + audit_syscall_entry(syscall, args[0], args[1], args[2], args[3]); + } +} + int syscall_trace_enter(struct pt_regs *regs, long syscall, unsigned long = flags) { int ret; @@ -2411,8 +2421,7 @@ int syscall_trace_enter(struct pt_regs *regs, long sy= scall, unsigned long flags) syscall =3D syscall_get_nr(current, regs); } =20 - audit_syscall_entry(syscall, regs->orig_x0, regs->regs[1], - regs->regs[2], regs->regs[3]); + syscall_enter_audit(regs, syscall); =20 return ret ? : syscall; } --=20 2.34.1