From patchwork Mon Apr 22 08:47:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13638030 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20E2DC07E8F for ; Mon, 22 Apr 2024 08:47:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=uWa569Spl6eGxd51iOYucP6jjJkdg1FUAKEALKGmaic=; b=KtTaqplGKC+FT1 wQNjOsTeJOJQ2qSLcoJ5gMgLwIbjJedF/NvRmgyWLW9fkttvAV2phiLbRZzttVXyrhwjiz/X4xivk AYOsHNU0omLct6jpWJ5XDZ2uyuEgw908Cs6slkJ6svExeeznP09iN8qofz12RUeZ3ZNfvu2qidTzk 0fpNXpaSP5JBzJmA4D2W63/hm8PIEfrpqMqcSebTYMNR+AlRQr6W8TO7KlSvJCJl/DVA5I3ihLJ5T LNY50aaQCHp9zyjC5fLZmWdUYc8T+z44nuel8rf4b/Wwp4gg3k5Zb48llPApgI2ubeRMK4u0bK1dc 858HQ3WHmqgOFHqwQG3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rypKy-0000000CiXU-3BRa; Mon, 22 Apr 2024 08:47:44 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rypKu-0000000CiTu-2JDk; Mon, 22 Apr 2024 08:47:42 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 6944CCE0987; Mon, 22 Apr 2024 08:47:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACF34C113CC; Mon, 22 Apr 2024 08:47:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713775657; bh=M6QQiy27Yx7cZTOC0617KB9Ln6pKKwikPWIcgenY/bM=; h=From:To:Cc:Subject:Date:From; b=BhbYt1HWBZxGe8p0rpcUIVFFy0qN3mUbgGQa+T/hdJ9oQJ5iN9QXtGO+1X2Qp+kcW q3FAb85uoScj1tMh7VK/q77eXzWKZQh5pt/OPtaDAEK6NzBtA4zbpekQbS/S73OKy+ S6K4J7+Gbcac0zubIdjxBgAfvUcmZPnk8iHEsua7yLLYoNI1nHquFFKokymhz1QsZ6 N2kiYbBilEozrmvprYGyC8M1TxF7Os+zPOSs7cNsuEML9MeP464uktwGfCcjzApu8s tW9zR6AyO4iX4WSS4f0h6ivopKwu9ye/MDbkwrxzhFXFzoptPuD2oe+4U9VpgigchB D5isfO4sruTJQ== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexandre Ghiti , Andrew Morton , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Donald Dutile , Eric Chanudet , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Michael Ellerman , Mike Rapoport , Nadav Amit , Palmer Dabbelt , Peter Zijlstra , Rick Edgecombe , Russell King , Sam Ravnborg , Song Liu , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Will Deacon , bpf@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v5 01/15] arm64: module: remove unneeded call to kasan_alloc_module_shadow() Date: Mon, 22 Apr 2024 11:47:09 +0300 Message-ID: <20240422084717.3602332-1-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240422_014740_801651_64981796 X-CRM114-Status: GOOD ( 11.28 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: "Mike Rapoport (IBM)" Since commit f6f37d9320a1 ("arm64: select KASAN_VMALLOC for SW/HW_TAGS modes") KASAN_VMALLOC is always enabled when KASAN is on. This means that allocations in module_alloc() will be tracked by KASAN protection for vmalloc() and that kasan_alloc_module_shadow() will be always an empty inline and there is no point in calling it. Drop meaningless call to kasan_alloc_module_shadow() from module_alloc(). Signed-off-by: Mike Rapoport (IBM) --- arch/arm64/kernel/module.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c index 47e0be610bb6..e92da4da1b2a 100644 --- a/arch/arm64/kernel/module.c +++ b/arch/arm64/kernel/module.c @@ -141,11 +141,6 @@ void *module_alloc(unsigned long size) __func__); } - if (p && (kasan_alloc_module_shadow(p, size, GFP_KERNEL) < 0)) { - vfree(p); - return NULL; - } - /* Memory is intended to be executable, reset the pointer tag. */ return kasan_reset_tag(p); }