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 v6 3/4] kasan: Add report for async mode Date: Fri, 22 Jan 2021 13:59:54 +0000 [thread overview] Message-ID: <20210122135955.30237-4-vincenzo.frascino@arm.com> (raw) In-Reply-To: <20210122135955.30237-1-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> Reviewed-by: 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 v6 3/4] kasan: Add report for async mode Date: Fri, 22 Jan 2021 13:59:54 +0000 [thread overview] Message-ID: <20210122135955.30237-4-vincenzo.frascino@arm.com> (raw) In-Reply-To: <20210122135955.30237-1-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> Reviewed-by: 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-22 14:01 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-22 13:59 [PATCH v6 0/4] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino 2021-01-22 13:59 ` Vincenzo Frascino 2021-01-22 13:59 ` [PATCH v6 1/4] arm64: mte: Add asynchronous " Vincenzo Frascino 2021-01-22 13:59 ` Vincenzo Frascino 2021-01-22 13:59 ` [PATCH v6 2/4] kasan: Add KASAN mode kernel parameter Vincenzo Frascino 2021-01-22 13:59 ` Vincenzo Frascino 2021-01-22 13:59 ` Vincenzo Frascino [this message] 2021-01-22 13:59 ` [PATCH v6 3/4] kasan: Add report for async mode Vincenzo Frascino 2021-01-22 13:59 ` [PATCH v6 4/4] arm64: mte: Enable async tag check fault Vincenzo Frascino 2021-01-22 13:59 ` Vincenzo Frascino 2021-01-22 14:09 ` [PATCH v6 0/4] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino 2021-01-22 14:09 ` Vincenzo Frascino
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