From nobody Sun Dec 14 08:04:14 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C892C00140 for ; Mon, 15 Aug 2022 18:27:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241819AbiHOS1v (ORCPT ); Mon, 15 Aug 2022 14:27:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242757AbiHOS00 (ORCPT ); Mon, 15 Aug 2022 14:26:26 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 257A930F46; Mon, 15 Aug 2022 11:19:25 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 164A7B81077; Mon, 15 Aug 2022 18:18:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1DF83C433D7; Mon, 15 Aug 2022 18:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660587530; bh=1sPZN9zAK9b0nXMwsiefYVa2gH9pSAB6Wy3GSLMBpQU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fgTSBiVjqM3IYcQghKckCVYJzYKeM4fxsIcbqTOaamSMIDHCKvtcsxHuRa+6mrnUt umkYMwxF20KrD7vZ5I3jqaHuRJCQdpEpS+PJiJiChmCN/LiwQxKv339X/KEgnRM8PR DnXiygkuiXJXnjCJ0ykpS+JXrTxk4Ev05xPY8gwc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Francis Laniel , Will Deacon , Sasha Levin Subject: [PATCH 5.15 113/779] arm64: Do not forget syscall when starting a new thread. Date: Mon, 15 Aug 2022 19:55:57 +0200 Message-Id: <20220815180342.160664688@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180337.130757997@linuxfoundation.org> References: <20220815180337.130757997@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Francis Laniel [ Upstream commit de6921856f99c11d3986c6702d851e1328d4f7f6 ] Enable tracing of the execve*() system calls with the syscalls:sys_exit_execve tracepoint by removing the call to forget_syscall() when starting a new thread and preserving the value of regs->syscallno across exec. Signed-off-by: Francis Laniel Link: https://lore.kernel.org/r/20220608162447.666494-2-flaniel@linux.micro= soft.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/include/asm/processor.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/pr= ocessor.h index 5e73d7f7d1e7..d9bf3d12a2b8 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -204,8 +204,9 @@ void tls_preserve_current_state(void); =20 static inline void start_thread_common(struct pt_regs *regs, unsigned long= pc) { + s32 previous_syscall =3D regs->syscallno; memset(regs, 0, sizeof(*regs)); - forget_syscall(regs); + regs->syscallno =3D previous_syscall; regs->pc =3D pc; =20 if (system_uses_irq_prio_masking()) --=20 2.35.1