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From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Dmitry Vyukov <dvyukov@google.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Marco Elver <elver@google.com>,
	Evgenii Stepanov <eugenis@google.com>,
	Branislav Rankov <Branislav.Rankov@arm.com>,
	Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH v5 3/6] kasan: Add report for async mode
Date: Thu, 21 Jan 2021 16:39:40 +0000	[thread overview]
Message-ID: <20210121163943.9889-4-vincenzo.frascino@arm.com> (raw)
In-Reply-To: <20210121163943.9889-1-vincenzo.frascino@arm.com>

KASAN provides an asynchronous mode of execution.

Add reporting functionality for this mode.

Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 include/linux/kasan.h |  2 ++
 mm/kasan/report.c     | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index bb862d1f0e15..b0a1d9dfa85c 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -351,6 +351,8 @@ static inline void *kasan_reset_tag(const void *addr)
 bool kasan_report(unsigned long addr, size_t size,
 		bool is_write, unsigned long ip);
 
+void kasan_report_async(void);
+
 #else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
 
 static inline void *kasan_reset_tag(const void *addr)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 234f35a84f19..2fd6845a95e9 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -358,6 +358,17 @@ void kasan_report_invalid_free(void *object, unsigned long ip)
 	end_report(&flags);
 }
 
+void kasan_report_async(void)
+{
+	unsigned long flags;
+
+	start_report(&flags);
+	pr_err("BUG: KASAN: invalid-access\n");
+	pr_err("Asynchronous mode enabled: no access details available\n");
+	dump_stack();
+	end_report(&flags);
+}
+
 static void __kasan_report(unsigned long addr, size_t size, bool is_write,
 				unsigned long ip)
 {
-- 
2.30.0


WARNING: multiple messages have this Message-ID (diff)
From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com
Cc: Marco Elver <elver@google.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Branislav Rankov <Branislav.Rankov@arm.com>,
	Alexander Potapenko <glider@google.com>,
	Evgenii Stepanov <eugenis@google.com>,
	Andrey Konovalov <andreyknvl@google.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Vincenzo Frascino <vincenzo.frascino@arm.com>,
	Will Deacon <will@kernel.org>, Dmitry Vyukov <dvyukov@google.com>
Subject: [PATCH v5 3/6] kasan: Add report for async mode
Date: Thu, 21 Jan 2021 16:39:40 +0000	[thread overview]
Message-ID: <20210121163943.9889-4-vincenzo.frascino@arm.com> (raw)
In-Reply-To: <20210121163943.9889-1-vincenzo.frascino@arm.com>

KASAN provides an asynchronous mode of execution.

Add reporting functionality for this mode.

Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 include/linux/kasan.h |  2 ++
 mm/kasan/report.c     | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index bb862d1f0e15..b0a1d9dfa85c 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -351,6 +351,8 @@ static inline void *kasan_reset_tag(const void *addr)
 bool kasan_report(unsigned long addr, size_t size,
 		bool is_write, unsigned long ip);
 
+void kasan_report_async(void);
+
 #else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
 
 static inline void *kasan_reset_tag(const void *addr)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 234f35a84f19..2fd6845a95e9 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -358,6 +358,17 @@ void kasan_report_invalid_free(void *object, unsigned long ip)
 	end_report(&flags);
 }
 
+void kasan_report_async(void)
+{
+	unsigned long flags;
+
+	start_report(&flags);
+	pr_err("BUG: KASAN: invalid-access\n");
+	pr_err("Asynchronous mode enabled: no access details available\n");
+	dump_stack();
+	end_report(&flags);
+}
+
 static void __kasan_report(unsigned long addr, size_t size, bool is_write,
 				unsigned long ip)
 {
-- 
2.30.0


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  parent reply	other threads:[~2021-01-21 16:41 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-21 16:39 [PATCH v5 0/6] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-01-21 16:39 ` Vincenzo Frascino
2021-01-21 16:39 ` [PATCH v5 1/6] arm64: mte: Add asynchronous " Vincenzo Frascino
2021-01-21 16:39   ` Vincenzo Frascino
2021-01-21 16:39 ` [PATCH v5 2/6] kasan: Add KASAN mode kernel parameter Vincenzo Frascino
2021-01-21 16:39   ` Vincenzo Frascino
2021-01-21 17:34   ` Andrey Konovalov
2021-01-21 17:34     ` Andrey Konovalov
2021-01-22 11:25     ` Vincenzo Frascino
2021-01-22 11:25       ` Vincenzo Frascino
2021-01-21 16:39 ` Vincenzo Frascino [this message]
2021-01-21 16:39   ` [PATCH v5 3/6] kasan: Add report for async mode Vincenzo Frascino
2021-01-21 17:36   ` Andrey Konovalov
2021-01-21 17:36     ` Andrey Konovalov
2021-01-22  2:45   ` kernel test robot
2021-01-22  2:45     ` kernel test robot
2021-01-22  2:45     ` kernel test robot
2021-01-22  2:46   ` kernel test robot
2021-01-22  2:46     ` kernel test robot
2021-01-22  2:46     ` kernel test robot
2021-01-22 13:19   ` Catalin Marinas
2021-01-22 13:19     ` Catalin Marinas
2021-01-22 13:27     ` Vincenzo Frascino
2021-01-22 13:27       ` Vincenzo Frascino
2021-01-22 13:38       ` Vincenzo Frascino
2021-01-22 13:38         ` Vincenzo Frascino
2021-01-21 16:39 ` [PATCH v5 4/6] arm64: mte: Enable async tag check fault Vincenzo Frascino
2021-01-21 16:39   ` Vincenzo Frascino
2021-01-21 17:38   ` Andrey Konovalov
2021-01-21 17:38     ` Andrey Konovalov
2021-01-22 11:24     ` Vincenzo Frascino
2021-01-22 11:24       ` Vincenzo Frascino
2021-01-22 11:58   ` Catalin Marinas
2021-01-22 11:58     ` Catalin Marinas
2021-01-21 16:39 ` [PATCH v5 5/6] arm64: mte: Expose execution mode Vincenzo Frascino
2021-01-21 16:39   ` Vincenzo Frascino
2021-01-21 17:41   ` Andrey Konovalov
2021-01-21 17:41     ` Andrey Konovalov
2021-01-21 16:39 ` [PATCH v5 6/6] kasan: Forbid kunit tests when async mode is enabled Vincenzo Frascino
2021-01-21 16:39   ` Vincenzo Frascino
2021-01-21 17:40   ` Andrey Konovalov
2021-01-21 17:40     ` Andrey Konovalov
2021-01-22 11:26     ` Vincenzo Frascino
2021-01-22 11:26       ` Vincenzo Frascino
2021-01-22 12:00     ` Catalin Marinas
2021-01-22 12:00       ` Catalin Marinas
2021-01-22  4:04   ` kernel test robot
2021-01-22  4:04     ` kernel test robot
2021-01-22  4:04     ` kernel test robot

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