From: Hyeonggon Yoo <42.hyeyoo@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Marco Elver <elver@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeelb@google.com>,
Muchun Song <muchun.song@linux.dev>,
Kees Cook <keescook@chromium.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kasan-dev@googlegroups.com, cgroups@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH v2 03/21] KASAN: remove code paths guarded by CONFIG_SLAB
Date: Tue, 21 Nov 2023 17:23:17 +0900 [thread overview]
Message-ID: <CAB=+i9R+307rFa8d6evMFMZwPrrCXmafGrZavMhupBYph6tSAg@mail.gmail.com> (raw)
In-Reply-To: <20231120-slab-remove-slab-v2-3-9c9c70177183@suse.cz>
On Tue, Nov 21, 2023 at 3:34 AM Vlastimil Babka <vbabka@suse.cz> wrote:
>
> With SLAB removed and SLUB the only remaining allocator, we can clean up
> some code that was depending on the choice.
>
> Reviewed-by: Kees Cook <keescook@chromium.org>
> Reviewed-by: Marco Elver <elver@google.com>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> ---
[...]
> diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
> index ca4529156735..138c57b836f2 100644
> --- a/mm/kasan/quarantine.c
> +++ b/mm/kasan/quarantine.c
> @@ -144,10 +144,6 @@ static void qlink_free(struct qlist_node *qlink, struct kmem_cache *cache)
> {
> void *object = qlink_to_object(qlink, cache);
> struct kasan_free_meta *meta = kasan_get_free_meta(cache, object);
> - unsigned long flags;
> -
> - if (IS_ENABLED(CONFIG_SLAB))
> - local_irq_save(flags);
>
> /*
> * If init_on_free is enabled and KASAN's free metadata is stored in
> @@ -166,9 +162,6 @@ static void qlink_free(struct qlist_node *qlink, struct kmem_cache *cache)
> *(u8 *)kasan_mem_to_shadow(object) = KASAN_SLAB_FREE;
>
> ___cache_free(cache, object, _THIS_IP_);
> -
> - if (IS_ENABLED(CONFIG_SLAB))
> - local_irq_restore(flags);
> }
FYI there's a slight conflict (easy to resolve, though) when I tried
to merge this on top of linux-next,
due to a recent change in KASAN:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=0e8b630f3053f0ff84b7c3ab8ff98a7393863824
Thanks,
Hyeonggon
next prev parent reply other threads:[~2023-11-21 8:23 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 18:34 [PATCH v2 00/21] remove the SLAB allocator Vlastimil Babka
2023-11-20 18:34 ` [PATCH v2 01/21] mm/slab, docs: switch mm-api docs generation from slab.c to slub.c Vlastimil Babka
2023-11-24 0:46 ` David Rientjes
2023-12-05 3:53 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 02/21] mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile Vlastimil Babka
2023-12-05 4:15 ` Hyeonggon Yoo
2023-12-05 10:14 ` Vlastimil Babka
2023-12-06 0:08 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 03/21] KASAN: remove code paths guarded by CONFIG_SLAB Vlastimil Babka
2023-11-21 8:23 ` Hyeonggon Yoo [this message]
2023-11-21 16:47 ` Andrey Konovalov
2023-12-05 4:26 ` Hyeonggon Yoo
2023-12-05 4:48 ` Hyeonggon Yoo
2023-12-05 10:16 ` Vlastimil Babka
2023-11-20 18:34 ` [PATCH v2 04/21] KFENCE: cleanup kfence_guarded_alloc() after CONFIG_SLAB removal Vlastimil Babka
2023-12-06 8:01 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 05/21] mm/memcontrol: remove CONFIG_SLAB #ifdef guards Vlastimil Babka
2023-12-06 8:12 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 06/21] cpu/hotplug: remove CPUHP_SLAB_PREPARE hooks Vlastimil Babka
2023-12-01 11:28 ` Thomas Gleixner
2023-12-06 8:28 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 07/21] mm/slab: remove CONFIG_SLAB code from slab common code Vlastimil Babka
2023-12-06 9:05 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 08/21] mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB ifdefs Vlastimil Babka
2023-12-06 9:10 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 09/21] mm/slab: remove mm/slab.c and slab_def.h Vlastimil Babka
2023-11-22 20:07 ` Christoph Lameter
2023-12-06 9:31 ` Hyeonggon Yoo
2023-12-06 9:37 ` Vlastimil Babka
2023-11-20 18:34 ` [PATCH v2 10/21] mm/slab: move struct kmem_cache_cpu declaration to slub.c Vlastimil Babka
2023-12-06 9:35 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 11/21] mm/slab: move the rest of slub_def.h to mm/slab.h Vlastimil Babka
2023-12-06 9:45 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 12/21] mm/slab: consolidate includes in the internal mm/slab.h Vlastimil Babka
2023-12-07 0:30 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 13/21] mm/slab: move pre/post-alloc hooks from slab.h to slub.c Vlastimil Babka
2023-12-07 0:43 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 14/21] mm/slab: move memcg related functions " Vlastimil Babka
2023-12-07 0:59 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 15/21] mm/slab: move struct kmem_cache_node " Vlastimil Babka
2023-12-07 1:11 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 16/21] mm/slab: move kfree() from slab_common.c " Vlastimil Babka
2023-12-05 4:38 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 17/21] mm/slab: move kmalloc_slab() to mm/slab.h Vlastimil Babka
2023-12-07 1:28 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 18/21] mm/slab: move kmalloc() functions from slab_common.c to slub.c Vlastimil Babka
2023-12-07 1:30 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 19/21] mm/slub: remove slab_alloc() and __kmem_cache_alloc_lru() wrappers Vlastimil Babka
2023-12-07 1:35 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 20/21] mm/slub: optimize alloc fastpath code layout Vlastimil Babka
2023-12-07 2:32 ` Hyeonggon Yoo
2023-11-20 18:34 ` [PATCH v2 21/21] mm/slub: optimize free fast path " Vlastimil Babka
2023-12-07 2:40 ` Hyeonggon Yoo
2023-11-24 0:45 ` [PATCH v2 00/21] remove the SLAB allocator David Rientjes
2023-11-24 9:26 ` Vlastimil Babka
2023-12-07 2:45 ` Hyeonggon Yoo
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