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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B98AC001DB for ; Sat, 2 Sep 2023 23:05:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232255AbjIBXFj (ORCPT ); Sat, 2 Sep 2023 19:05:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229571AbjIBXFh (ORCPT ); Sat, 2 Sep 2023 19:05:37 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EBDE7CFE for ; Sat, 2 Sep 2023 16:05:33 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 4CBD8CE08BE for ; Sat, 2 Sep 2023 23:05:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B663C433C8; Sat, 2 Sep 2023 23:05:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1693695930; bh=Lp4/XjsPiEnt98+3Gbm4T8TzceNVExA6hQYePF2wCKo=; h=Date:To:From:Subject:From; b=p0tCr6z3rFiKjx90gSSutddFshSAOg70Yyrx7C7eSF8daHszC2/22l6zsC+6ZCjqy MhX3m4jzGFy4Wt8Qg2VOK4W5pbYpWIV427YsM45KXZZrYNLMQhGseagk3/86JdL6vl +ckWdpX9FOiehueB045Xu+NfpXwhtWgLATwCEMGY= Date: Sat, 02 Sep 2023 16:05:29 -0700 To: mm-commits@vger.kernel.org, shuah@kernel.org, keescook@chromium.org, jeffxu@google.com, dverkamp@chromium.org, dtometzki@fedoraproject.org, cyphar@cyphar.com, brauner@kernel.org, akpm@linux-foundation.org, akpm@linux-foundation.org From: Andrew Morton Subject: + revert-memfd-improve-userspace-warnings-for-missing-exec-related-flags.patch added to mm-unstable branch Message-Id: <20230902230530.6B663C433C8@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: revert "memfd: improve userspace warnings for missing exec-related flags". has been added to the -mm mm-unstable branch. Its filename is revert-memfd-improve-userspace-warnings-for-missing-exec-related-flags.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/revert-memfd-improve-userspace-warnings-for-missing-exec-related-flags.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Andrew Morton Subject: revert "memfd: improve userspace warnings for missing exec-related flags". Date: Sat Sep 2 03:59:31 PM PDT 2023 This warning is telling userspace developers to pass MFD_EXEC and MFD_NOEXEC_SEAL to memfd_create(). Commit 434ed3350f57 ("memfd: improve userspace warnings for missing exec-related flags") made the warning more frequent and visible in the hope that this would accelerate the fixing of errant userspace. But the overall effect is to generate far too much dmesg noise. Fixes: 434ed3350f57 memfd: improve userspace warnings for missing exec-related flags Reported-by: Damian Tometzki Closes: https://lkml.kernel.org/r/ZPFzCSIgZ4QuHsSC@fedora.fritz.box Cc: Aleksa Sarai Cc: Christian Brauner Cc: Daniel Verkamp Cc: Jeff Xu Cc: Kees Cook Cc: Shuah Khan Signed-off-by: Andrew Morton --- mm/memfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/memfd.c~revert-memfd-improve-userspace-warnings-for-missing-exec-related-flags +++ a/mm/memfd.c @@ -316,7 +316,7 @@ SYSCALL_DEFINE2(memfd_create, return -EINVAL; if (!(flags & (MFD_EXEC | MFD_NOEXEC_SEAL))) { - pr_info_ratelimited( + pr_warn_once( "%s[%d]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set\n", current->comm, task_pid_nr(current)); } _ Patches currently in -mm which might be from akpm@linux-foundation.org are mm-shmem-fix-race-in-shmem_undo_range-w-thp-fix.patch revert-memfd-improve-userspace-warnings-for-missing-exec-related-flags.patch