From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3FA6084D11; Tue, 26 Mar 2024 18:08:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711476502; cv=none; b=QoSmAIgS9E1rskW18wV2DVBiQOEWmzuFnJeh00ipYXZxmvb53V1Z0Ahy7XajxS7H6fT16r9DTdEYRgXl6zjA+YjQi9D6zWQvS+DE7zeykFSJ1rgL+baGG/VkKc/tTaiHr7BhFTXjAtciWbw//qE+xy3VvuknWUg1QsOOh8DqQn8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711476502; c=relaxed/simple; bh=2KqROH7vzSI+Bi7pqDiHxES3G3QesV3e/fO4GFCOSsE=; h=Date:To:From:Subject:Message-Id; b=Vu4PSPH9xl8xmxYZR2qCceRa0hy6yjdAQz9KeBadp1msqwrJRIQTkRUeSh2Cr9eV9jc5Qic6HFExAzd6OlBJEybECJLxMduRB34MhgdyCblaTmuOX4MtFO01u3q/ohQpI8dfDcTm9BsBziDoux7OwYn3FGrvWUrOt6mF5RBXp34= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=i7xYEfmc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="i7xYEfmc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF06BC433C7; Tue, 26 Mar 2024 18:08:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1711476501; bh=2KqROH7vzSI+Bi7pqDiHxES3G3QesV3e/fO4GFCOSsE=; h=Date:To:From:Subject:From; b=i7xYEfmcW+IBxXiLhQLUvcGUwtabI7dY2sZjocvv+gOzkyOdlCRY88POxS0XDK+Lo WVmt0XY6kFHI9dERpy7Jt+AT/oMDt3I/1Y5sCgNKgu8LIHbH2uoW5ZHnLPm6GeQ7oT KCg0SRytsr/OExrWIvYHi/tsnUmj6ygctNuEATl0= Date: Tue, 26 Mar 2024 11:08:21 -0700 To: mm-commits@vger.kernel.org,yang@os.amperecomputing.com,stable@vger.kernel.org,shr@devkernel.io,sam@gentoo.org,rppt@kernel.org,rick.p.edgecombe@intel.com,revest@chromium.org,omosnace@redhat.com,oleg@redhat.com,ojeda@kernel.org,linux@armlinux.org.uk,keescook@chromium.org,josh@joshtriplett.org,James.Bottomley@HansenPartnership.com,fengwei.yin@intel.com,deller@gmx.de,david@redhat.com,bp@alien8.de,zev@bewilderbeest.net,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-hotfixes-stable] arm-prctl-reject-pr_set_mdwe-on-pre-armv6.patch removed from -mm tree Message-Id: <20240326180821.BF06BC433C7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: ARM: prctl: reject PR_SET_MDWE on pre-ARMv6 has been removed from the -mm tree. Its filename was arm-prctl-reject-pr_set_mdwe-on-pre-armv6.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Zev Weiss Subject: ARM: prctl: reject PR_SET_MDWE on pre-ARMv6 Date: Mon, 26 Feb 2024 17:35:42 -0800 On v5 and lower CPUs we can't provide MDWE protection, so ensure we fail any attempt to enable it via prctl(PR_SET_MDWE). Previously such an attempt would misleadingly succeed, leading to any subsequent mmap(PROT_READ|PROT_WRITE) or execve() failing unconditionally (the latter somewhat violently via force_fatal_sig(SIGSEGV) due to READ_IMPLIES_EXEC). Link: https://lkml.kernel.org/r/20240227013546.15769-6-zev@bewilderbeest.net Signed-off-by: Zev Weiss Cc: [6.3+] Cc: Borislav Petkov Cc: David Hildenbrand Cc: Florent Revest Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: Josh Triplett Cc: Kees Cook Cc: Miguel Ojeda Cc: Mike Rapoport (IBM) Cc: Oleg Nesterov Cc: Ondrej Mosnacek Cc: Rick Edgecombe Cc: Russell King (Oracle) Cc: Sam James Cc: Stefan Roesch Cc: Yang Shi Cc: Yin Fengwei Signed-off-by: Andrew Morton --- arch/arm/include/asm/mman.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) --- /dev/null +++ a/arch/arm/include/asm/mman.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_MMAN_H__ +#define __ASM_MMAN_H__ + +#include +#include + +static inline bool arch_memory_deny_write_exec_supported(void) +{ + return cpu_architecture() >= CPU_ARCH_ARMv6; +} +#define arch_memory_deny_write_exec_supported arch_memory_deny_write_exec_supported + +#endif /* __ASM_MMAN_H__ */ _ Patches currently in -mm which might be from zev@bewilderbeest.net are