linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: andrey.konovalov@linux.dev
To: Marco Elver <elver@google.com>,
	Alexander Potapenko <glider@google.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Andrey Konovalov <andreyknvl@gmail.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Andrey Ryabinin <ryabinin.a.a@gmail.com>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	Vincenzo Frascino <vincenzo.frascino@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Peter Collingbourne <pcc@google.com>,
	Evgenii Stepanov <eugenis@google.com>,
	linux-kernel@vger.kernel.org,
	Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH mm v4 37/39] arm64: select KASAN_VMALLOC for SW/HW_TAGS modes
Date: Mon, 20 Dec 2021 23:03:31 +0100	[thread overview]
Message-ID: <88439ce8afa1e794c561a098e7e1bcd735bdcdcf.1640036051.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1640036051.git.andreyknvl@google.com>

From: Andrey Konovalov <andreyknvl@google.com>

Generic KASAN already selects KASAN_VMALLOC to allow VMAP_STACK to be
selected unconditionally, see commit acc3042d62cb9 ("arm64: Kconfig:
select KASAN_VMALLOC if KANSAN_GENERIC is enabled").

The same change is needed for SW_TAGS KASAN.

HW_TAGS KASAN does not require enabling KASAN_VMALLOC for VMAP_STACK,
they already work together as is. Still, selecting KASAN_VMALLOC still
makes sense to make vmalloc() always protected. In case any bugs in
KASAN's vmalloc() support are discovered, the command line kasan.vmalloc
flag can be used to disable vmalloc() checking.

Select KASAN_VMALLOC for all KASAN modes for arm64.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>

---

Changes v2->v3:
- Update patch description.

Changes v1->v2:
- Split out this patch.
---
 arch/arm64/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 508769fe5be5..0833b3e87724 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -205,7 +205,7 @@ config ARM64
 	select IOMMU_DMA if IOMMU_SUPPORT
 	select IRQ_DOMAIN
 	select IRQ_FORCED_THREADING
-	select KASAN_VMALLOC if KASAN_GENERIC
+	select KASAN_VMALLOC if KASAN
 	select MODULES_USE_ELF_RELA
 	select NEED_DMA_MAP_STATE
 	select NEED_SG_DMA_LENGTH
-- 
2.25.1


  parent reply	other threads:[~2021-12-20 22:03 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-20 21:58 [PATCH mm v4 00/39] kasan, vmalloc, arm64: add vmalloc tagging support for SW/HW_TAGS andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 01/39] kasan, page_alloc: deduplicate should_skip_kasan_poison andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 02/39] kasan, page_alloc: move tag_clear_highpage out of kernel_init_free_pages andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 03/39] kasan, page_alloc: merge kasan_free_pages into free_pages_prepare andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 04/39] kasan, page_alloc: simplify kasan_poison_pages call site andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 05/39] kasan, page_alloc: init memory of skipped pages on free andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 06/39] kasan: drop skip_kasan_poison variable in free_pages_prepare andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 07/39] mm: clarify __GFP_ZEROTAGS comment andrey.konovalov
2021-12-21  9:16   ` Alexander Potapenko
2021-12-30 19:11     ` Andrey Konovalov
2021-12-20 21:58 ` [PATCH mm v4 08/39] kasan: only apply __GFP_ZEROTAGS when memory is zeroed andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 09/39] kasan, page_alloc: refactor init checks in post_alloc_hook andrey.konovalov
2021-12-20 21:58 ` [PATCH mm v4 10/39] kasan, page_alloc: merge kasan_alloc_pages into post_alloc_hook andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 11/39] kasan, page_alloc: combine tag_clear_highpage calls in post_alloc_hook andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 12/39] kasan, page_alloc: move SetPageSkipKASanPoison " andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 13/39] kasan, page_alloc: move kernel_init_free_pages " andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 14/39] kasan, page_alloc: rework kasan_unpoison_pages call site andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 15/39] kasan: clean up metadata byte definitions andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 16/39] kasan: define KASAN_VMALLOC_INVALID for SW_TAGS andrey.konovalov
2021-12-21  9:23   ` Alexander Potapenko
2021-12-20 21:59 ` [PATCH mm v4 17/39] kasan, x86, arm64, s390: rename functions for modules shadow andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 18/39] kasan, vmalloc: drop outdated VM_KASAN comment andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 19/39] kasan: reorder vmalloc hooks andrey.konovalov
2021-12-20 21:59 ` [PATCH mm v4 20/39] kasan: add wrappers for " andrey.konovalov
2021-12-21 14:21   ` Alexander Potapenko
2021-12-20 21:59 ` [PATCH mm v4 21/39] kasan, vmalloc: reset tags in vmalloc functions andrey.konovalov
2021-12-20 22:01 ` [PATCH mm v4 22/39] kasan, fork: reset pointer tags of vmapped stacks andrey.konovalov
2021-12-21 15:11   ` Alexander Potapenko
2021-12-20 22:01 ` [PATCH mm v4 23/39] kasan, arm64: " andrey.konovalov
2021-12-20 22:01 ` [PATCH mm v4 24/39] kasan, vmalloc: add vmalloc tagging for SW_TAGS andrey.konovalov
2021-12-20 22:01 ` [PATCH mm v4 25/39] kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged andrey.konovalov
2021-12-20 22:01 ` [PATCH mm v4 26/39] kasan, vmalloc: unpoison VM_ALLOC pages after mapping andrey.konovalov
2021-12-21 11:50   ` Alexander Potapenko
2021-12-20 22:01 ` [PATCH mm v4 27/39] kasan, mm: only define ___GFP_SKIP_KASAN_POISON with HW_TAGS andrey.konovalov
2021-12-20 22:02 ` [PATCH mm v4 28/39] kasan, page_alloc: allow skipping unpoisoning for HW_TAGS andrey.konovalov
2021-12-21 12:04   ` Marco Elver
2021-12-30 19:11     ` Andrey Konovalov
2021-12-21 12:14   ` Marco Elver
2021-12-21 12:19     ` Marco Elver
2021-12-20 22:02 ` [PATCH mm v4 29/39] kasan, page_alloc: allow skipping memory init " andrey.konovalov
2021-12-21 12:11   ` Marco Elver
2021-12-30 19:11     ` Andrey Konovalov
2021-12-21 12:30   ` Marco Elver
2021-12-30 19:11     ` Andrey Konovalov
2021-12-20 22:02 ` [PATCH mm v4 30/39] kasan, vmalloc: add vmalloc tagging " andrey.konovalov
2021-12-20 22:02 ` [PATCH mm v4 31/39] kasan, vmalloc: only tag normal vmalloc allocations andrey.konovalov
2021-12-20 22:02 ` [PATCH mm v4 32/39] kasan, arm64: don't tag executable " andrey.konovalov
2021-12-20 22:05   ` Andrey Konovalov
2021-12-22 11:11   ` Catalin Marinas
2021-12-20 22:02 ` [PATCH mm v4 33/39] kasan: mark kasan_arg_stacktrace as __initdata andrey.konovalov
2021-12-20 22:02 ` [PATCH mm v4 34/39] kasan: simplify kasan_init_hw_tags andrey.konovalov
2021-12-20 22:02 ` [PATCH mm v4 35/39] kasan: add kasan.vmalloc command line flag andrey.konovalov
2021-12-21 14:43   ` Alexander Potapenko
2021-12-30 19:11     ` Andrey Konovalov
2021-12-20 22:03 ` [PATCH mm v4 36/39] kasan: allow enabling KASAN_VMALLOC and SW/HW_TAGS andrey.konovalov
2021-12-20 22:03 ` andrey.konovalov [this message]
2021-12-20 22:03 ` [PATCH mm v4 38/39] kasan: documentation updates andrey.konovalov
2021-12-20 22:03 ` [PATCH mm v4 39/39] kasan: improve vmalloc tests andrey.konovalov
2021-12-22  7:00 ` [PATCH mm v4 00/39] kasan, vmalloc, arm64: add vmalloc tagging support for SW/HW_TAGS Marco Elver
2021-12-30 19:11   ` Andrey Konovalov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=88439ce8afa1e794c561a098e7e1bcd735bdcdcf.1640036051.git.andreyknvl@google.com \
    --to=andrey.konovalov@linux.dev \
    --cc=akpm@linux-foundation.org \
    --cc=andreyknvl@gmail.com \
    --cc=andreyknvl@google.com \
    --cc=catalin.marinas@arm.com \
    --cc=dvyukov@google.com \
    --cc=elver@google.com \
    --cc=eugenis@google.com \
    --cc=glider@google.com \
    --cc=kasan-dev@googlegroups.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mark.rutland@arm.com \
    --cc=pcc@google.com \
    --cc=ryabinin.a.a@gmail.com \
    --cc=vincenzo.frascino@arm.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).