From: Andrey Konovalov <andreyknvl@google.com>
To: Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
kasan-dev@googlegroups.com
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Elena Petrova <lenaptr@google.com>,
Branislav Rankov <Branislav.Rankov@arm.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Will Deacon <will.deacon@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH v4 18/39] kasan: kasan_non_canonical_hook only for software modes
Date: Fri, 2 Oct 2020 01:10:19 +0200 [thread overview]
Message-ID: <32076774a3cb7307410532deb902716411a2dc52.1601593784.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1601593784.git.andreyknvl@google.com>
This is a preparatory commit for the upcoming addition of a new hardware
tag-based (MTE-based) KASAN mode.
kasan_non_canonical_hook() is only applicable to KASAN modes that use
shadow memory, and won't be needed for hardware tag-based KASAN.
No functional changes for software modes.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Marco Elver <elver@google.com>
---
Change-Id: Icc9f5ef100a2e86f3a4214a0c3131a68266181b2
---
mm/kasan/report.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 9e4d539d62f4..67aa30b45805 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -371,7 +371,8 @@ bool kasan_report(unsigned long addr, size_t size, bool is_write,
return ret;
}
-#ifdef CONFIG_KASAN_INLINE
+#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \
+ defined(CONFIG_KASAN_INLINE)
/*
* With CONFIG_KASAN_INLINE, accesses to bogus pointers (outside the high
* canonical half of the address space) cause out-of-bounds shadow memory reads
--
2.28.0.709.gb0816b6eb0-goog
next prev parent reply other threads:[~2020-10-01 23:11 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 23:10 [PATCH v4 00/39] kasan: add hardware tag-based mode for arm64 Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 01/39] kasan: drop unnecessary GPL text from comment headers Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 02/39] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 03/39] kasan: group vmalloc code Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 04/39] kasan: shadow declarations only for software modes Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 05/39] kasan: rename (un)poison_shadow to (un)poison_memory Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 06/39] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 07/39] kasan: only build init.c for software modes Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 08/39] kasan: split out shadow.c from common.c Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 09/39] kasan: define KASAN_GRANULE_PAGE Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 10/39] kasan: rename report and tags files Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 11/39] kasan: don't duplicate config dependencies Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 12/39] kasan: hide invalid free check implementation Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 13/39] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 14/39] kasan, arm64: only init shadow for software modes Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 15/39] kasan, arm64: only use kasan_depth " Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 16/39] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 17/39] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov
2020-10-01 23:10 ` Andrey Konovalov [this message]
2020-10-01 23:10 ` [PATCH v4 19/39] kasan: rename SHADOW layout macros to META Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 20/39] kasan: separate metadata_fetch_row for each mode Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 21/39] kasan, arm64: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 22/39] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 23/39] arm64: Enable armv8.5-a asm-arch option Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 24/39] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov
2020-10-02 13:51 ` Catalin Marinas
2020-10-01 23:10 ` [PATCH v4 25/39] arm64: kasan: Add arch layer for memory tagging helpers Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 26/39] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 27/39] arm64: kasan: Enable in-kernel MTE Andrey Konovalov
2020-10-02 14:00 ` Catalin Marinas
2020-10-01 23:10 ` [PATCH v4 28/39] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 29/39] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov
2020-10-02 14:06 ` Catalin Marinas
2020-10-08 18:24 ` Vincenzo Frascino
2020-10-09 8:11 ` Catalin Marinas
2020-10-09 9:56 ` Vincenzo Frascino
2020-10-09 10:16 ` Catalin Marinas
2020-10-09 10:21 ` Vincenzo Frascino
2020-10-01 23:10 ` [PATCH v4 30/39] arm64: kasan: Enable TBI EL1 Andrey Konovalov
2020-10-02 14:10 ` Catalin Marinas
2020-10-01 23:10 ` [PATCH v4 31/39] arm64: kasan: Align allocations for HW_TAGS Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 32/39] kasan: define KASAN_GRANULE_SIZE " Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 33/39] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 34/39] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 35/39] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 36/39] kasan, arm64: print report from tag fault handler Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 37/39] kasan, mm: reset tags when accessing metadata Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 38/39] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov
2020-10-01 23:10 ` [PATCH v4 39/39] kasan: add documentation for hardware tag-based mode Andrey Konovalov
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