From patchwork Mon Apr 29 12:16:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13646742 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EDB085338F; Mon, 29 Apr 2024 12:16:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714393012; cv=none; b=DJ5RBOqrD5ujbD/0P7RklIPxXeQWFmEef6VxC2cdO/u779uBghA0yQci/rIoPLsmoidOUKVWY+rmDzcmBdnGdEwoQZQ1XuzDBprT7hRLtITHlIUXvPojS5QBdTrB/A8eqE7ohX6mo7meAYDxaVNLtg1/PqMuCrIF2o+T2KFOa7w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714393012; c=relaxed/simple; bh=M6QQiy27Yx7cZTOC0617KB9Ln6pKKwikPWIcgenY/bM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bQ6ePHFX1XGzNRyYYy44TLVTQEgIHp/1s1RtUf9OpmFvbwZKwW+O0JEY7sUynG1sMC9/9m7eLA2qG3fsrSK9ChxEzwscIxhKvU+mgMymyafu0HPq7LdyJbxWp0GOyOs14NFVTqaOVQ5njSWtrhT2HsHjRq31Hje/GCjyQtJkGWo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rrtaQ6ZR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rrtaQ6ZR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CCD6AC116B1; Mon, 29 Apr 2024 12:16:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714393011; bh=M6QQiy27Yx7cZTOC0617KB9Ln6pKKwikPWIcgenY/bM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rrtaQ6ZRauqLf/QhMFAemIwxty5h8uPgHqNHcQHMySQ0MVzSPRXhHPa70sYRHy560 R3ypGaNGmpK25kfwoaLY75bO6SL3PrS5QdWsCTpF3c0uNb2RjHmIMtQehjComNV4PA 7rTOG9sf9Y4cRg2FKyjlc2ZMSHW9W888iUWXrOzZF7gBQ3O6SNysHzMRswOtXovsDJ CSL1YJvy+o21e6T+s2OL2KTljE4I5btQP46OkO1QxwfyupslVupTFPTNAfbQDRv3R/ ArsqZQxMTG8N9Bok5TZcctWTKYXAa/ipZzVziPkgCkS09miRTrC6AopDRPXdDfwsbN pkCNlBgseaK3Q== 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 , =?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 v7 01/16] arm64: module: remove unneeded call to kasan_alloc_module_shadow() Date: Mon, 29 Apr 2024 15:16:05 +0300 Message-ID: <20240429121620.1186447-2-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240429121620.1186447-1-rppt@kernel.org> References: <20240429121620.1186447-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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); }