+ x86-uaccess-avoid-check_object_size-in-copy_from_user_nmi-fix.patch added to mm-hotfixes-unstable branch

[Andrew Morton <akpm@linux-foundation.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

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------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
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 <keescook@chromium.org>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Florian Lehner <dev@der-flo.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Florian Lehner <dev@der-flo.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- 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