From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752879AbcEBFxX (ORCPT ); Mon, 2 May 2016 01:53:23 -0400 Received: from out4441.biz.mail.alibaba.com ([47.88.44.41]:3400 "EHLO out4441.biz.mail.alibaba.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750948AbcEBFxP (ORCPT ); Mon, 2 May 2016 01:53:15 -0400 X-Greylist: delayed 991 seconds by postgrey-1.27 at vger.kernel.org; Mon, 02 May 2016 01:53:15 EDT X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07831617|-1;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03303;MF=chengang@emindsoft.com.cn;NM=1;PH=DS;RN=10;RT=9;SR=0;TI=SMTPD_----4l7UEDz_1462167376; From: chengang@emindsoft.com.cn To: akpm@linux-foundation.org, aryabinin@virtuozzo.com, glider@google.com, dvyukov@google.com Cc: kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Chen Gang , Chen Gang Subject: [PATCH] mm/kasan/kasan.h: Fix boolean checking issue for kasan_report_enabled() Date: Mon, 2 May 2016 13:36:14 +0800 Message-Id: <1462167374-6321-1-git-send-email-chengang@emindsoft.com.cn> X-Mailer: git-send-email 1.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chen Gang According to kasan_[dis|en]able_current() comments and the kasan_depth' s initialization, if kasan_depth is zero, it means disable. So need use "!!kasan_depth" instead of "!kasan_depth" for checking enable. Signed-off-by: Chen Gang --- mm/kasan/kasan.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 7da78a6..6464b8f 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -102,7 +102,7 @@ static inline const void *kasan_shadow_to_mem(const void *shadow_addr) static inline bool kasan_report_enabled(void) { - return !current->kasan_depth; + return !!current->kasan_depth; } void kasan_report(unsigned long addr, size_t size, -- 1.9.3