linux-kernel - [PATCH] kasan: add __asan_report_loadN/storeN

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Message-Id: <891fbd1fe77f46701fb1958e77bdd89651c12643.1516383788.git.andreyknvl@google.com>
Date:   Fri, 19 Jan 2018 18:44:22 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Kostya Serebryany <kcc@...gle.com>,
        Evgeniy Stepanov <eugenis@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: [PATCH] kasan: add __asan_report_loadN/storeN_noabort callbacks

Instead of __asan_report_load_n_noabort and __asan_report_store_n_noabort
callbacks Clang emits differently named __asan_report_loadN_noabort and
__asan_report_storeN_noabort (similar to __asan_loadN/storeN_noabort, whose
names both GCC and Clang agree on).

Add callback implementation for __asan_report_loadN/storeN_noabort.

Signed-off-by: Andrey Konovalov <andreyknvl@...gle.com>
---
 mm/kasan/report.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index eff12e040498..caf4c9e948c6 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -450,3 +450,15 @@ void __asan_report_store_n_noabort(unsigned long addr, size_t size)
 	kasan_report(addr, size, true, _RET_IP_);
 }
 EXPORT_SYMBOL(__asan_report_store_n_noabort);
+
+void __asan_report_loadN_noabort(unsigned long addr, size_t size)
+{
+	kasan_report(addr, size, false, _RET_IP_);
+}
+EXPORT_SYMBOL(__asan_report_loadN_noabort);
+
+void __asan_report_storeN_noabort(unsigned long addr, size_t size)
+{
+	kasan_report(addr, size, true, _RET_IP_);
+}
+EXPORT_SYMBOL(__asan_report_storeN_noabort);
-- 
2.16.0.rc1.238.g530d649a79-goog