linux-kernel - RE: [PATCH v6 2/5] KUnit: KASAN Integration

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Date:   Mon, 20 Apr 2020 05:43:40 +0000
From:   Walter-ZH Wu (吳祖寰) 
        <Walter-ZH.Wu@...iatek.com>
To:     David Gow <davidgow@...gle.com>,
        "trishalfonso@...gle.com" <trishalfonso@...gle.com>,
        "brendanhiggins@...gle.com" <brendanhiggins@...gle.com>,
        "aryabinin@...tuozzo.com" <aryabinin@...tuozzo.com>,
        "dvyukov@...gle.com" <dvyukov@...gle.com>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "juri.lelli@...hat.com" <juri.lelli@...hat.com>,
        "vincent.guittot@...aro.org" <vincent.guittot@...aro.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kunit-dev@...glegroups.com" <kunit-dev@...glegroups.com>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "Andrey Konovalov" <andreyknvl@...gle.com>
Subject: RE: [PATCH v6 2/5] KUnit: KASAN Integration

Hi David,

	start_report(&flags);
 	pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", (void *)ip);
 	print_tags(tag, object);
@@ -486,6 +513,14 @@ void __kasan_report(unsigned long addr, size_t size, bool is_write, unsigned lon
 	void *untagged_addr;
 	unsigned long flags;
 
+	if (likely(!report_enabled()))
+		return;

kasan_report() already has the test expression, it should not need duplicating if statement.


Walter

+
+#if IS_ENABLED(CONFIG_KUNIT)
+	if (current->kunit_test)
+		kasan_update_kunit_status(current->kunit_test);
+#endif /* IS_ENABLED(CONFIG_KUNIT) */
+
 	disable_trace_on_warning();
 
 	tagged_addr = (void *)addr;
--
2.26.1.301.g55bc3eb7cb9-goog

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