From patchwork Sun May 5 14:25:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13654384 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 038D3C25B10 for ; Sun, 5 May 2024 14:26:51 +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:References:In-Reply-To: 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: List-Owner; bh=ETA3vspOVT+/VB9v2tjXXqy1IG7cq8BEG03uD8FfWYI=; b=BkFMA18aTazJKa 9uD31llpfpdbWs59p6DFVt9b9gCGr+fEa62liqLZl4bm2IT3kh4MIERzSDRDaV38wZMaOeMaPeGEl YP5QYyLJhnVOYebbNvk0xRmfqa71h8ShgMw+/SKwMBLir7w9anpW0q4gcYgSCrkxa0jyD6C9ryhOq iFGPklUZ8Rn5ud/p0KUE5aLaz8FrwIrx9BlblZMXLrKuI8jsKwqw5MAd12I6ubhEp8tiFs7jvHOsP 9u+PP2cwAiUTQyaiEzgi6piIJZWB8PpoE0QvKqzKnnh/IvB1oumYPFuH0KrN/x2P+Q3a/znOJNu2Z rGhqaYaFyGHpKHGQqZqg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s3cp5-00000004RoH-1zds; Sun, 05 May 2024 14:26:39 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s3cp1-00000004Rkn-3Dvt; Sun, 05 May 2024 14:26:37 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 4B70B60C88; Sun, 5 May 2024 14:26:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC393C4DDE5; Sun, 5 May 2024 14:26:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714919193; bh=M6QQiy27Yx7cZTOC0617KB9Ln6pKKwikPWIcgenY/bM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NSPh68o6mPYr5fxxFtC2V72LTOuvr3yq8hW9zx6j+MQT2QTIBh9u0UYi6U60wKMQ8 4pUcdPzWIOrk786o1LPMCd95D81lUAiJdKTVxj1ZpL+gyGi8qYDPggeL2hw/UDWEMu H8yR71nI/+PlLDzZBqTfTQ1Cie+RG4x5ncIdrHl8Seo9b772nXYthDV76uYlYsxO3e wQYg6gU14o2i3rAa5QG/0f77H7ZldG9qTZa21eZgJY4qTNmIeZTc79JOB4S8iYpY/l 0cYrL/tkLY7wSmRuDhM/ExnpEYA0X6qhsgfUjZwCYRm6wHSDtLs/Jy026Jn90UZc9J yhiYIU+MAPqGA== 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 , Liviu Dudau , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Michael Ellerman , Mike Rapoport , Nadav Amit , Palmer Dabbelt , Peter Zijlstra , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , 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 v8 01/17] arm64: module: remove unneeded call to kasan_alloc_module_shadow() Date: Sun, 5 May 2024 17:25:44 +0300 Message-ID: <20240505142600.2322517-2-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240505142600.2322517-1-rppt@kernel.org> References: <20240505142600.2322517-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240505_072635_921650_E1BAC1B9 X-CRM114-Status: GOOD ( 11.85 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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); }