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 EA806C32771 for ; Thu, 22 Sep 2022 00:52:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229775AbiIVAwN (ORCPT ); Wed, 21 Sep 2022 20:52:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229641AbiIVAwM (ORCPT ); Wed, 21 Sep 2022 20:52:12 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 244DA8A1C9 for ; Wed, 21 Sep 2022 17:52:11 -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 AAD89B83303 for ; Thu, 22 Sep 2022 00:52:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C17BC433D6; Thu, 22 Sep 2022 00:52:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1663807928; bh=9nyY0rBNquPppTEZQ0riAyFdXWmCBdvGHbIVW9GnISA=; h=Date:To:From:Subject:From; b=F2yTfxy4XPUQUOlgLz56Wv4o5qBnlt06uPN3nYyBp1LkB3AUG0pB15YQmngp+swyo 5IIgbbNPv7oRxhQfCfeY42Q6Wf2DdzaExfIPTDd5x9rSPigqZtOaFuHdi+CJW+zWud TLmozHsp1guQ+KQJgWCS75fs+DOxl4ZAzlYBNb2Y= Date: Wed, 21 Sep 2022 17:52:06 -0700 To: mm-commits@vger.kernel.org, yuzhao@google.com, willy@infradead.org, peterz@infradead.org, keescook@chromium.org, jpoimboe@kernel.org, dev@der-flo.net, dave.hansen@linux.intel.com, akpm@linux-foundation.org, akpm@linux-foundation.org From: Andrew Morton Subject: + x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix.patch added to mm-hotfixes-unstable branch Message-Id: <20220922005208.3C17BC433D6@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: x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix has been added to the -mm mm-hotfixes-unstable branch. Its filename is x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix.patch This patch will later appear in the mm-hotfixes-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: x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix Date: Wed Sep 21 05:50:47 PM PDT 2022 no instrument_copy_from_user() in my tree... Cc: Kees Cook Cc: Yu Zhao Cc: Florian Lehner Cc: Andrew Morton Cc: Peter Zijlstra (Intel) Cc: Florian Lehner Cc: Matthew Wilcox Cc: Josh Poimboeuf Cc: Dave Hansen Signed-off-by: Andrew Morton --- --- a/arch/x86/lib/usercopy.c~x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix +++ a/arch/x86/lib/usercopy.c @@ -44,7 +44,6 @@ copy_from_user_nmi(void *to, const void * called from other contexts. */ pagefault_disable(); - instrument_copy_from_user(to, from, n); ret = raw_copy_from_user(to, from, n); pagefault_enable(); _ Patches currently in -mm which might be from akpm@linux-foundation.org are mmhwpoison-check-mm-when-killing-accessing-process-fix.patch x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix.patch mm-oom_kill-add-trace-logs-in-process_mrelease-system-call-fix.patch mm-demotion-add-support-for-explicit-memory-tiers-fix.patch mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-2.patch mm-drop-oom-code-from-exit_mmap-fix-fix.patch mm-delete-unused-mmf_oom_victim-flag-fix.patch mm-add-merging-after-mremap-resize-checkpatch-fixes.patch mm-reduce-noise-in-show_mem-for-lowmem-allocations-vs-mapletree.patch mm-reduce-noise-in-show_mem-for-lowmem-allocations-vs-mapletree-fix.patch mm-vmscan-fix-a-lot-of-comments-vs-mglru.patch swap-add-swap_cache_get_folio-fix.patch memcg-reduce-size-of-memcg-vmstats-structures-fix.patch mm-damon-vaddr-add-a-comment-for-default-case-in-damon_va_apply_scheme-fix.patch mm-page_allocc-rename-check_free_page-to-free_page_is_bad.patch mm-page_allocc-rename-check_free_page-to-free_page_is_bad-fix.patch mm-page_allocc-document-bulkfree_pcp_prepare-return-value.patch fs-uninline-inode_maybe_inc_iversion.patch ipc-msg-mitigate-the-lock-contention-with-percpu-counter-checkpatch-fixes.patch ipc-msg-mitigate-the-lock-contention-with-percpu-counter-fix-fix.patch