linux-kernel - [PATCH v2 1/1] kmemleak: only scan non-zero-size section

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Date:	Wed, 11 Jan 2012 13:51:10 +0800
From:	Tiejun Chen <tiejun.chen@...driver.com>
To:	<catalin.marinas@....com>
CC:	<linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/1] kmemleak: only scan non-zero-size section

We should only scan that invalid section which size is not
zero as well.

Signed-off-by: Tiejun Chen <tiejun.chen@...driver.com>
---
change for v2
 * go a common point, kmemleak_scan_area(), to check size

 mm/kmemleak.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 2c0d032..98d62e3 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -923,7 +923,7 @@ void __ref kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
 {
 	pr_debug("%s(0x%p)\n", __func__, ptr);
 
-	if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
+	if (atomic_read(&kmemleak_enabled) && ptr && size && !IS_ERR(ptr))
 		add_scan_area((unsigned long)ptr, size, gfp);
 	else if (atomic_read(&kmemleak_early_log))
 		log_early(KMEMLEAK_SCAN_AREA, ptr, size, 0);
-- 
1.6.0.4

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