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.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 EFF0BC43458 for ; Wed, 8 Jul 2026 09:16:38 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gwCC93t7mz2xll; Wed, 08 Jul 2026 19:16:37 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2600:3c0a:e001:78e:0:1991:8:25" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783502197; cv=none; b=WVdG7lahR5lh9GDbGeu4dMXvXd6irIx0aY3QeqtzZn8Gp9A7cf2TrKuQYIRqAcSA7UKktqQM/wPGca2boBJ04mJ0ukHOZAzcrHkGKzdz5zJBw6XpO7HDBhwG4H8B9IeBfYBeSKJfo/V/FQ+IcZbWoO1/xg3V7iCYJYgylWxJAVTHs0xDwwwtPA22lh84EZrXHq/K0J7TD9To5GuZQLy31Zp7lajyAlPS0BiR9WGDfkZ5cIQvgfwJ85eoE8SLitptZ1hUg41Z285+IYWlyzAeVeeZmpVTzNVaduz2YCF/FjoGMao4BDapOv8Kwx8jDUri8RxlHyCji0YdBDM2OsqLdw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783502197; c=relaxed/relaxed; bh=mYG6WaG7m68VASwoH/Qbw0bAKXQeJJcttE2MKggz9kU=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=QKoEGA1oC3biiMD6B3WAQJ6hxHUQI0SZ4S6ogMGyqc3Gj92FV5PASVZJuSpOOqG8S5mkx7xSjTtvlPKhVYjr33HvtIm/zIMn+xCjqOPWNkwGCu46CMkbNPg1nOa/g954th2aeKx02nKJxvmxEBM4rk+vcpHNROBPKlierBOaR0Il3LNzixyVfz5aOFHZzSqIpUHRyv3HZb+JVujZSiZnDMaQbhfd1WYLgSert2A85lASHUDl25R+B/DXadR9w1wF/BqDszIypo/+KJ0sweZA4wtpOT71nd79yENV0K8ozXkGo0OCH+TaHRHBQuqKwg3ByKJnvnW7Zv+I/+hSeXVNhQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=N1o7Cy/2; dkim-atps=neutral; spf=pass (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=tglx@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=N1o7Cy/2; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=tglx@kernel.org; receiver=lists.ozlabs.org) Received: from sea.source.kernel.org (sea.source.kernel.org [IPv6:2600:3c0a:e001:78e:0:1991:8:25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4gwCC82l0jz2xWY for ; Wed, 08 Jul 2026 19:16:36 +1000 (AEST) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 5308240128; Wed, 8 Jul 2026 09:16:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33F891F000E9; Wed, 8 Jul 2026 09:16:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783502188; bh=mYG6WaG7m68VASwoH/Qbw0bAKXQeJJcttE2MKggz9kU=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=N1o7Cy/2UAb5pvDnsW2W/2IEWfzlvPb5qh6tUiAem8Gf2M7VhGzhZ/Y2Jx40amSta eRYwR2//CYve1u4uzypgFTemTLGPafIx5fVQioLJD5Sn4hdfvpP5u4eZkeOM833ouq 3G+3Mlh8e7JmA5rStlaPedSdWHh/t+ELsZVQ0VNJ6mieO79DKlgD0lbLcCskpo8frt Ek2lck3KWosiUBwUhmEc4sxs8Xn8DQLyVRoOsZlF1VniYeV+rnE4EXiJUggm2doJ5h E24L6gP0rJ3vUHlKDAV+stjtsRYHo0Hqfr+yfpngxNIhAv4MFlNEU9teLXpTQ3Gqv7 Wt6aASI6cp48A== From: Thomas Gleixner To: Shrikanth Hegde , LKML Cc: Peter Zijlstra , Michal =?utf-8?Q?Such=C3=A1nek?= , Jonathan Corbet , Arnd Bergmann , Mark Rutland , Huacai Chen , Michael Ellerman , Paul Walmsley , Palmer Dabbelt , Sven Schnelle , linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, Kees Cook , x86@kernel.org, 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, 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 Subject: Re: [patch 18/18] entry, treewide: Make syscall_enter_from_user_mode[_work]() indicate syscall execution In-Reply-To: <5c202ab4-33f1-42e9-bef2-81fbd0a9992e@linux.ibm.com> References: <20260707181957.433213175@kernel.org> <20260707190254.603111179@kernel.org> <5c202ab4-33f1-42e9-bef2-81fbd0a9992e@linux.ibm.com> Date: Wed, 08 Jul 2026 11:16:25 +0200 Message-ID: <87y0flrgd2.ffs@fw13> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain On Wed, Jul 08 2026 at 10:51, Shrikanth Hegde wrote: > On 7/8/26 12:37 AM, Thomas Gleixner wrote: >> - r0 = syscall_enter_from_user_mode_randomize_stack(regs, r0); >> + if (unlikely(!syscall_enter_from_user_mode_randomize_stack(regs, &r0)) >> + return syscall_get_error(current, regs); >> > > There is one missing ) Bah.