From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 4C76E441625 for ; Wed, 2 Sep 2026 14:44:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788360267; cv=none; b=LylysNLZ4OzoNGEG2yXBUOBgKM1w6bHmVRkm7qvW1NMTeGMW0yeQaPO2zIijSsbpj943OgVUsm5rqcwelPUsEEyu6/Y5y5+ieNM2cdZJJglmwPFbqNTzC3WPl82dxuuXwhFXULX90ec3np4KX+dcQRnBTypuBhYXXlNT5ACYvzc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788360267; c=relaxed/simple; bh=PUzYQPg358Fw+8vCplV+Vd9W8fGaaTeSWjRuWnfZwLo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qwWnFlYNgQ71XJNTgbQHPK9mnuGWUa0jm1y4DMjxPM+/DYFw+d5EUhbxFfesps8Z8E/Bb0WQXVTsVZCuOENnmWm4r5fxPVRcouJ/ICfqd86c+WoBidKJ1kFCUGrRdHAVTKiE3GrltgOt3WBBkMc238oXv7OzAC9VmDsKZbeltcQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Y9leQ1yD; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Y9leQ1yD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1788360264; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=U+aXXTqCSMT4v6m94l8wWsE7+DIKM+xtaz3ODxXPycs=; b=Y9leQ1yDg2P2qQve7SQRCrOnFQ2IevjZoTyAdlKBO/j1srQWFq+WbdcbAkuRU5VOwISeod W4kmSXwGNp0UotAfGTgTdEpXrmTdJcCHsMsFMHkxn8p+SIakx5vK+y+dpuwceHtdSgfI7+ XThQnwH2rRmZrK3njU+tQgJ5JS6bq+M= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-554-iOdmff8TMlenYO4gBNmrnQ-1; Wed, 02 Sep 2026 10:44:19 -0400 X-MC-Unique: iOdmff8TMlenYO4gBNmrnQ-1 X-Mimecast-MFC-AGG-ID: iOdmff8TMlenYO4gBNmrnQ_1788360253 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9DB891945CB6; Wed, 2 Sep 2026 14:44:09 +0000 (UTC) Received: from wsxc.redhat.com (unknown [10.96.134.11]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 070E21800641; Wed, 2 Sep 2026 14:43:53 +0000 (UTC) From: Ricardo Robaina To: audit@vger.kernel.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, bpf@vger.kernel.org Cc: paul@paul-moore.com, eparis@redhat.com, sgrubb@redhat.com, oleg@redhat.com, richard.henderson@linaro.org, mattst88@gmail.com, linmag7@gmail.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, monstr@monstr.eu, tsbogend@alpha.franken.de, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, ysato@users.sourceforge.jp, dalias@libc.org, glaubitz@physik.fu-berlin.de, davem@davemloft.net, andreas@gaisler.com, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, chris@zankel.net, jcmvbkbc@gmail.com, tglx@kernel.org, peterz@infradead.org, luto@kernel.org, Ricardo Robaina Subject: [PATCH v2 00/13] audit: log all six syscall arguments in the SYSCALL record Date: Wed, 2 Sep 2026 11:43:33 -0300 Message-ID: Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 The SYSCALL record currently logs only four of the six syscall arguments (a0-a3), silently discarding the remaining two. This leads to the need for auxiliary records when audit-relevant data lands in the 5th or 6th argument of a syscall. This series extends the SYSCALL record to log all six arguments, by adding arguments a4 and a5 inline within the existing record. The audit testsuite runs successfully: # make test make -C tests test Running as user root with context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 on system Fedora amcast_joinpart/test ................. ok backlog_wait_time_actual_reset/test .. ok bpf/test ............................. ok coredump/test ........................ ok exec_execve/test ..................... ok exec_name/test ....................... ok fanotify/test ........................ ok field_compare/test ................... ok file_create/test ..................... ok file_delete/test ..................... ok file_permission/test ................. ok file_rename/test ..................... ok filter_device/test ................... ok filter_exclude/test .................. ok filter_exit/test ..................... ok filter_inode/test .................... ok filter_saddr_fam/test ................ ok filter_sessionid/test ................ ok io_uring/test ........................ ok login_tty/test ....................... ok lost_reset/test ...................... ok netfilter_pkt/test ................... ok signal/test .......................... ok syscalls_file/test ................... ok syscall_module/test .................. ok syscall_socketcall/test .............. ok time_change/test ..................... ok user_msg/test ........................ ok All tests successful. Result: PASS Changes in v2: - Rework the core change per Will Deacon's suggestion: instead of plumbing all six arguments through every architecture's syscall entry path, __audit_syscall_entry() now takes a struct pt_regs * and retrieves the arguments itself via syscall_get_arguments(). - Per-arch patches now simply pass regs instead of the individual argument registers. - Fetch the arguments directly into context->argv, dropping the temporary array. Ricardo Robaina (13): audit: log all six syscall arguments in the SYSCALL record alpha: pass pt_regs to audit_syscall_entry() arm: pass pt_regs to audit_syscall_entry() arm64: pass pt_regs to audit_syscall_entry() csky: pass pt_regs to audit_syscall_entry() microblaze: pass pt_regs to audit_syscall_entry() mips: pass pt_regs to audit_syscall_entry() openrisc: pass pt_regs to audit_syscall_entry() parisc: pass pt_regs to audit_syscall_entry() sh: pass pt_regs to audit_syscall_entry() sparc64: pass pt_regs to audit_syscall_entry() um: pass pt_regs to audit_syscall_entry() xtensa: pass pt_regs to audit_syscall_entry() arch/alpha/kernel/ptrace.c | 3 +-- arch/arm/kernel/ptrace.c | 3 +-- arch/arm64/kernel/ptrace.c | 3 +-- arch/csky/kernel/ptrace.c | 2 +- arch/microblaze/kernel/ptrace.c | 2 +- arch/mips/kernel/ptrace.c | 4 +--- arch/openrisc/kernel/ptrace.c | 3 +-- arch/parisc/kernel/ptrace.c | 9 ++------- arch/sh/kernel/ptrace_32.c | 3 +-- arch/sparc/kernel/ptrace_64.c | 4 +--- arch/um/kernel/ptrace.c | 6 +----- arch/xtensa/kernel/ptrace.c | 4 +--- include/linux/audit.h | 13 ++++--------- include/uapi/linux/audit.h | 2 ++ kernel/audit.h | 2 +- kernel/auditfilter.c | 2 ++ kernel/auditsc.c | 19 ++++++++----------- kernel/entry/syscall-common.c | 4 +--- 18 files changed, 31 insertions(+), 57 deletions(-) -- 2.55.0