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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1BA60C43458 for ; Tue, 7 Jul 2026 19:07:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:Subject:Cc:To: From:Message-ID:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=AUEBAJVF90MlL0/iHAkYoKXWg0xzwUvu+JHEEpN2V7U=; b=KR3W6kZsu6ZNJh 2zyW9ckDC5m9SU/qKIlv3tkG5UwnVjS/BD8Lz9AXhgOEbu2QjHeGVPtMfDwzVzeSj1e0gFohySMga gBMqMacm/qSqD0y4fZrAloEFSBb4WhVW4x8lukDipWM/zom2GEFVChm0vluBPXBO3o4ut5j1V6mGn 46kisS3B9bvZmuCtIIm68TDBj5bczkESnsGo8i2m9/OpP9bRxIqVvl43JxbmEHF5W+byo2ba0uoNT di48jQwW85oHAwMN/eR0mk54BUhlYs+E+bKYkry/I04W8gTAvD0nhjIa4QyzB0KiU6JVr31tJztj5 lxTM5a1+Bh7JVmHn/l6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1whB8r-0000000FiGE-2JUc; Tue, 07 Jul 2026 19:07:37 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1whB8C-0000000FhYj-00m7; Tue, 07 Jul 2026 19:06:56 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id BB45E40166; Tue, 7 Jul 2026 19:06:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF4E71F00A3D; Tue, 7 Jul 2026 19:06:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783451215; bh=M6M79H685AEiWZ8EuGvrBs5I7Y5P9Ee9ippfe5S1H4o=; h=Date:From:To:Cc:Subject:References; b=Z9pGvu6HNUZ1HEZ1iYllaavjjFKOFgTqadPIozXIv9JGgx2jiaihgSbjZ3dmUzUJU hfjd2RhwbRCe4/RE6GxyfPq09ROnl/NCd1HaUQk2oMKLyHrrLWVUfmEQIWNgG4H0yV BATAOIL2AA4szex3DJbzo2snz+LuHQ5mvQ28B8yiZeSewg4gWEoZdYSbZCcErqheQA uNsdYnJB/6z23NzIIqnXgmHg+EkSOB5aumXG9do1DJbSPpj9mBvOvIqZlR1k7iJd+n ifnsuEaoUlbMIslTJD3wtnmpXeWlKWS3cwSDNZNKQCEZLL2h2iYwy4NYNlzBrzTYMO XibetjyLr85WQ== Date: Tue, 07 Jul 2026 21:06:53 +0200 Message-ID: <20260707190254.392010241@kernel.org> User-Agent: quilt/0.69 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Michael Ellerman , Shrikanth Hegde , linuxppc-dev@lists.ozlabs.org, Kees Cook , Huacai Chen , loongarch@lists.linux.dev, Paul Walmsley , Palmer Dabbelt , linux-riscv@lists.infradead.org, Sven Schnelle , linux-s390@vger.kernel.org, x86@kernel.org, Mark Rutland , Jinjie Ruan , Andy Lutomirski , Oleg Nesterov , Richard Henderson , Russell King , Catalin Marinas , Guo Ren , Geert Uytterhoeven , Thomas Bogendoerfer , Helge Deller , Yoshinori Sato , Richard Weinberger , Chris Zankel , linux-arm-kernel@lists.infradead.org, linux-alpha@vger.kernel.org, linux-csky@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, Arnd Bergmann , Vineet Gupta , Will Deacon , Brian Cain , Michal Simek , Dinh Nguyen , "David S. Miller" , Andreas Larsson , linux-snps-arc@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-openrisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, =?UTF-8?q?Michal=20Such=C3=A1nek?= , Jonathan Corbet , linux-doc@vger.kernel.org Subject: [patch 14/18] entry: Make return type of syscall_trace_enter() bool References: <20260707181957.433213175@kernel.org> MIME-Version: 1.0 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This prepares for changing the return types of syscall_enter_from_user_mode[_work]() to bool, which in turn separates the decision of invoking the syscall from the syscall number, which might have been changed in the call by ptrace, seccomp, tracing. Signed-off-by: Thomas Gleixner --- include/linux/entry-common.h | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) --- a/include/linux/entry-common.h +++ b/include/linux/entry-common.h @@ -71,8 +71,8 @@ static inline void syscall_enter_audit(s } } -static __always_inline long syscall_trace_enter(struct pt_regs *regs, unsigned long work, - long syscall) +static __always_inline bool syscall_trace_enter(struct pt_regs *regs, unsigned long work, + long *syscall) { /* * Handle Syscall User Dispatch. This must comes first, since @@ -81,7 +81,7 @@ static __always_inline long syscall_trac */ if (work & SYSCALL_WORK_SYSCALL_USER_DISPATCH) { if (syscall_user_dispatch(regs)) - return -1L; + return false; } /* @@ -90,32 +90,32 @@ static __always_inline long syscall_trac * through hrtimer_interrupt(). */ if (work & SYSCALL_WORK_SYSCALL_RSEQ_SLICE) - rseq_syscall_enter_work(syscall); + rseq_syscall_enter_work(*syscall); /* Handle ptrace */ if (work & (SYSCALL_WORK_SYSCALL_TRACE | SYSCALL_WORK_SYSCALL_EMU)) { if (!arch_ptrace_report_syscall_permit_entry(regs) || (work & SYSCALL_WORK_SYSCALL_EMU)) - return -1L; + return false; } /* Do seccomp after ptrace, to catch any tracer changes. */ if (work & SYSCALL_WORK_SECCOMP) { if (!__seccomp_permit_syscall()) - return -1L; + return false; } /* Either of the above might have changed the syscall number */ - syscall = syscall_get_nr(current, regs); + *syscall = syscall_get_nr(current, regs); if (unlikely(work & SYSCALL_WORK_SYSCALL_TRACEPOINT)) { - if (!trace_syscall_enter(regs, &syscall)) - return -1L; + if (!trace_syscall_enter(regs, syscall)) + return false; } - syscall_enter_audit(regs, syscall); + syscall_enter_audit(regs, *syscall); - return syscall; + return true; } /** @@ -145,8 +145,10 @@ static __always_inline long syscall_ente { unsigned long work = READ_ONCE(current_thread_info()->syscall_work); - if (work & SYSCALL_WORK_ENTER) - syscall = syscall_trace_enter(regs, work, syscall); + if (work & SYSCALL_WORK_ENTER) { + if (!syscall_trace_enter(regs, work, &syscall)) + return -1L; + } return syscall; } _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv