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 C5E2DC6FA8B for ; Mon, 5 Sep 2022 22:48:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230347AbiIEWsE (ORCPT ); Mon, 5 Sep 2022 18:48:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232371AbiIEWsC (ORCPT ); Mon, 5 Sep 2022 18:48:02 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC39153002 for ; Mon, 5 Sep 2022 15:48:00 -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 680E5B815D5 for ; Mon, 5 Sep 2022 22:47:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE52CC433D6; Mon, 5 Sep 2022 22:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1662418078; bh=kibvsxboroL2Xw0BygMZ+j0Vh7K5teK/SPBvYU2K5mU=; h=Date:To:From:Subject:From; b=clyHPKALhL+lb3HgUu3D/kJA3EVxMFUB/IiDrgwRufEM/f5rohrixsnKRn0E9O8Hq 2vDNGxpMU6VUEZqM9YM1vcRWSzz02ZCOJ8tuUcjYY1OrvAxh/2ZTWeJ6N5O3rScIat gvDeNPpR20tAs7Bt5vCVkSOotUvz20gZBBrOHghE= Date: Mon, 05 Sep 2022 15:47:57 -0700 To: mm-commits@vger.kernel.org, ryabinin.a.a@gmail.com, pcc@google.com, glider@google.com, eugenis@google.com, elver@google.com, dvyukov@google.com, andreyknvl@google.com, akpm@linux-foundation.org From: Andrew Morton Subject: + kasan-clear-metadata-functions-for-tag-based-modes.patch added to mm-unstable branch Message-Id: <20220905224757.EE52CC433D6@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: kasan: clear metadata functions for tag-based modes has been added to the -mm mm-unstable branch. Its filename is kasan-clear-metadata-functions-for-tag-based-modes.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-clear-metadata-functions-for-tag-based-modes.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: Andrey Konovalov Subject: kasan: clear metadata functions for tag-based modes Date: Mon, 5 Sep 2022 23:05:24 +0200 Remove implementations of the metadata-related functions for the tag-based modes. The following patches in the series will provide alternative implementations. As of this patch, the tag-based modes no longer collect alloc and free stack traces. This functionality will be restored later in the series. Link: https://lkml.kernel.org/r/470fbe5d15e8015092e76e395de354be18ccceab.1662411799.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Reviewed-by: Marco Elver Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Peter Collingbourne Signed-off-by: Andrew Morton --- mm/kasan/tags.c | 33 ++------------------------------- 1 file changed, 2 insertions(+), 31 deletions(-) --- a/mm/kasan/tags.c~kasan-clear-metadata-functions-for-tag-based-modes +++ a/mm/kasan/tags.c @@ -19,54 +19,25 @@ void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - __memset(alloc_meta, 0, sizeof(*alloc_meta)); } void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - kasan_set_track(&alloc_meta->alloc_track, flags); } void kasan_save_free_info(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return; - - kasan_set_track(&alloc_meta->free_track, GFP_NOWAIT); } struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache, void *object) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->alloc_track; + return NULL; } struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->free_track; + return NULL; } _ Patches currently in -mm which might be from andreyknvl@google.com are kasan-check-kasan_no_free_meta-in-__kasan_metadata_size.patch kasan-rename-kasan_set__info-to-kasan_save__info.patch kasan-move-is_kmalloc-check-out-of-save_alloc_info.patch kasan-split-save_alloc_info-implementations.patch kasan-drop-config_kasan_tags_identify.patch kasan-introduce-kasan_print_aux_stacks.patch kasan-introduce-kasan_get_alloc_track.patch kasan-introduce-kasan_init_object_meta.patch kasan-clear-metadata-functions-for-tag-based-modes.patch kasan-move-kasan_get__meta-to-genericc.patch kasan-introduce-kasan_requires_meta.patch kasan-introduce-kasan_init_cache_meta.patch kasan-drop-config_kasan_generic-check-from-kasan_init_cache_meta.patch kasan-only-define-kasan_metadata_size-for-generic-mode.patch kasan-only-define-kasan_never_merge-for-generic-mode.patch kasan-only-define-metadata-offsets-for-generic-mode.patch kasan-only-define-metadata-structs-for-generic-mode.patch kasan-only-define-kasan_cache_create-for-generic-mode.patch kasan-pass-tagged-pointers-to-kasan_save_alloc-free_info.patch kasan-move-kasan_get_alloc-free_track-definitions.patch kasan-cosmetic-changes-in-reportc.patch kasan-use-virt_addr_valid-in-kasan_addr_to_page-slab.patch kasan-use-kasan_addr_to_slab-in-print_address_description.patch kasan-make-kasan_addr_to_page-static.patch kasan-simplify-print_report.patch kasan-introduce-complete_report_info.patch kasan-fill-in-cache-and-object-in-complete_report_info.patch kasan-rework-function-arguments-in-reportc.patch kasan-introduce-kasan_complete_mode_report_info.patch kasan-implement-stack-ring-for-tag-based-modes.patch kasan-support-kasanstacktrace-for-sw_tags.patch kasan-dynamically-allocate-stack-ring-entries.patch kasan-better-identify-bug-types-for-tag-based-modes.patch kasan-add-another-use-after-free-test.patch kasan-move-tests-to-mm-kasan.patch