From patchwork Thu Mar 7 18:52:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qian Cai X-Patchwork-Id: 10843755 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 431C217E9 for ; Thu, 7 Mar 2019 18:53:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E2012F609 for ; Thu, 7 Mar 2019 18:53:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 220772F649; Thu, 7 Mar 2019 18:53:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B22E02F609 for ; Thu, 7 Mar 2019 18:53:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E5CBC8E0004; Thu, 7 Mar 2019 13:53:14 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id E0C3D8E0002; Thu, 7 Mar 2019 13:53:14 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CFCB18E0004; Thu, 7 Mar 2019 13:53:14 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by kanga.kvack.org (Postfix) with ESMTP id A71928E0002 for ; Thu, 7 Mar 2019 13:53:14 -0500 (EST) Received: by mail-qt1-f197.google.com with SMTP id p5so16226232qtp.3 for ; Thu, 07 Mar 2019 10:53:14 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:date :message-id; bh=p/uycB6wwfQ9mpJ/cDj3nrD1aSO5NRmGJ7t1JhstDM8=; b=VxW4VTbKvQjYJcmj52zeO8txIhcaNQ187MGKya9AWOG6cg6ZYTR1d4GFZGbv1xL1cc s5hK4iNK3TybgKDdCU1RAadQTAr/zI+SvM1u8JA2gY2D9ikW2eK03IVCawwyrrI/xXPB vg8RbDOude5E9pteG4nfcqO+i7nS6JxGwG9G2d+P8rp1axWP30aiVt2Ei5PbkzFhw/HM x8sx8or+VzojvBnPECjk8JRsFdKGng1hWtFteY58pdvVzKM8GMK/zUBuEG60DjIoq1Dq gxLFCG2gyQw4wgDnuJhcZFGhfWCAmjRt7ioQpxfDRmiQCt7XqLy7EnXxoyTeIlCg6RrM 9JZA== X-Gm-Message-State: APjAAAV6Q9URr19XaUk3yZIKONcTexuj98dMjHepcHEChRtts712sktw sdmHWXSZWYgd2ej9HeQu4ihHIB7uIElxfMECaozcvQj/Kba4KxLcIT2WyGorHVJlPw0Ii4kOr3m hW8VsuyQ9Rioec1L1UTNDBBP41BdPjGZ6WNFBrpg2eyDm7GaE0Kqch4bkfg8M5zxiQBwxck2xkm CmOmqU7KOBzQlxhySkFU6CmeTVOgaO5gTBDF+qNrjNmNeInc1VPFlIdbmVMstfrZRKVtEeaNeVn W8VD4jjyofePIO/W5Cr7in/VYdh3LDaIrAIQFqNGbtc+4r986RS2AtxLEVMKbSsIkL6v5lvMajG /B10O5/VLeIZMkTYgNp7zEcQPzwa0wzkHKt54RGXG8+gO81tBqxfdWECA2Wds1+jnj4iWVXvIZG 9 X-Received: by 2002:aed:3eac:: with SMTP id n41mr11014530qtf.362.1551984794401; Thu, 07 Mar 2019 10:53:14 -0800 (PST) X-Received: by 2002:aed:3eac:: with SMTP id n41mr11014478qtf.362.1551984793528; Thu, 07 Mar 2019 10:53:13 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1551984793; cv=none; d=google.com; s=arc-20160816; b=B1H/6m5LV/3OaR9dmJg+tZfEyLUQzvawCiLJZYzuMH02xt03WV1Wgxe0gEF+QX711e bW2+F91MuFljCMeHg0uv5mx71+cxJxb9Yz2Pel9AURLiFAcgwacZSc+h8XpwlWBYGeFJ Uy3JjGAygPgbpEatady8slnHWksyVzzUlCEVTh5tbl1FElUzQN3sn8xjV3S0tncWTDIj 7a0KLT1G5H2PXXxi1FoAL8O+wU4M5BOhq3dmJ19A2N6HQM2pCPAyZZqu/okpcGyycM/p BdycBS6LDU1vdkzsU0K7X+xYqNYMtU6nxkOKT/51hWgNZTribHURpt98IfQqmZediS/u qesA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from:dkim-signature; bh=p/uycB6wwfQ9mpJ/cDj3nrD1aSO5NRmGJ7t1JhstDM8=; b=mOg/wbtBWCX96+23eUrAuu133E6O13u/G8W4mLnMS2SDC17lBOBXN00Z1pAZucsbV9 h1HSqErmWqS9PiEv8K4Xx1jlQ7wHMlNxZgIggdH+ux3tdP0o4LFuFOM5A6KoBn+rnMn/ JI/i6aucDB9JkXVYcYitjZBR6AQo4rfDgfqH5jYaTzj4AfAE03pjUFDKr2hx+4aqOYlD ZR6TDictEI3g7zYsH3apED8Jme+w0b/RTxR8SPTeq4nMuUdqleItSfiQnxqqUVSfW2jv dVZ+Gp8/z+xcgI2TRNiYWorzcEtV36VxZci5fKTvM+Mp0UvgtN+N64U+427kbB2RtzF6 dQnQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@lca.pw header.s=google header.b=npNbQ9ug; spf=pass (google.com: domain of cai@lca.pw designates 209.85.220.65 as permitted sender) smtp.mailfrom=cai@lca.pw Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id 16sor6913208qtr.23.2019.03.07.10.53.13 for (Google Transport Security); Thu, 07 Mar 2019 10:53:13 -0800 (PST) Received-SPF: pass (google.com: domain of cai@lca.pw designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@lca.pw header.s=google header.b=npNbQ9ug; spf=pass (google.com: domain of cai@lca.pw designates 209.85.220.65 as permitted sender) smtp.mailfrom=cai@lca.pw DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lca.pw; s=google; h=from:to:cc:subject:date:message-id; bh=p/uycB6wwfQ9mpJ/cDj3nrD1aSO5NRmGJ7t1JhstDM8=; b=npNbQ9ugg6BqXhBShFoxcI+GsIl/fQL1QQiivFdQuXTzcRUGxcFBOnos1rPrqOcUGZ LpkY8q7OeZ3u/jLDGFI/8r0tIdwcF5zyhjcZWU+ryrwQKbz64WJoswuqcgOs4CUHTFtC dwnK7AXsVkVipwWteXZBUzl6ojcGHfXjpr4nYNV5oBbRYe3jcn+xMH0IaqALsvmJnuCa RvKS76TIqHjNR9CkiOP9V9iNNQXcV4niHNxVQq3vwmCDvpWLMtTat1aI0+ysmKUVfypQ qcBWRpQgKdyhCZRIQ9G2JzzIhI41U5fnxDzBOllsFQ+1lAhsX4OucCWzjXwQmHK607we v4tQ== X-Google-Smtp-Source: APXvYqzGLcM4sdL4fQMyRvzu7ZEKQ3Jrxk7x05or0Uat2bPqh6vF/YVXkc6OhqMJ9BzxmD4BoExgEg== X-Received: by 2002:ac8:22d1:: with SMTP id g17mr11423320qta.30.1551984793227; Thu, 07 Mar 2019 10:53:13 -0800 (PST) Received: from ovpn-121-103.rdu2.redhat.com (pool-71-184-117-43.bstnma.fios.verizon.net. [71.184.117.43]) by smtp.gmail.com with ESMTPSA id x6sm2514892qtr.9.2019.03.07.10.53.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Mar 2019 10:53:12 -0800 (PST) From: Qian Cai To: akpm@linux-foundation.org Cc: aryabinin@virtuozzo.com, glider@google.com, dvyukov@google.com, andreyknvl@google.com, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qian Cai Subject: [PATCH] kasan: fix variable 'tag' set but not used warning Date: Thu, 7 Mar 2019 13:52:44 -0500 Message-Id: <20190307185244.54648-1-cai@lca.pw> X-Mailer: git-send-email 2.17.2 (Apple Git-113) X-Bogosity: Ham, tests=bogofilter, spamicity=0.002319, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP set_tag() compiles away when CONFIG_KASAN_SW_TAGS=n, so make arch_kasan_set_tag() a static inline function to fix warnings below. mm/kasan/common.c: In function '__kasan_kmalloc': mm/kasan/common.c:475:5: warning: variable 'tag' set but not used [-Wunused-but-set-variable] u8 tag; ^~~ Signed-off-by: Qian Cai Reviewed-by: Andrey Konovalov --- mm/kasan/kasan.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 3e0c11f7d7a1..3ce956efa0cb 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -163,7 +163,10 @@ static inline u8 random_tag(void) #endif #ifndef arch_kasan_set_tag -#define arch_kasan_set_tag(addr, tag) ((void *)(addr)) +static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) +{ + return addr; +} #endif #ifndef arch_kasan_reset_tag #define arch_kasan_reset_tag(addr) ((void *)(addr))