From patchwork Thu Oct 11 23:31:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Edgecombe, Rick P" X-Patchwork-Id: 10637643 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 BB673112B for ; Thu, 11 Oct 2018 23:44:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A588B2C241 for ; Thu, 11 Oct 2018 23:44:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 99DB32C318; Thu, 11 Oct 2018 23:44:38 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 35A292C241 for ; Thu, 11 Oct 2018 23:44:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Fme/5xRqgEbgCWKmfdFbSNWQInAmWPxHT4XrWUj8tLE=; b=JdoxacC/EHdmuW+mVIU03glDZu AMoxU8yRpkyz8blmEZw1YG636dZOiDq3/e7SGkWJcoZXPs2o7QFQYONqQbKG/3N9lNrsLS+aQe/Ar qKqkelRWqGzEPmsua+tsogryMy0hbP+CDfK9NGVAefrku5FdBqoqPjNsbKZuS1hr/CBNw5V4AQ6A/ cIdCpolecLNZjIy6LDh69tUrh5li+JxlpH251VSMMLalsPzkC1VqeZKiH89sBSIPc9yUziwv0RnO+ vW6q6d99Zu/66F5rzzHVt0opH+7vZ0oU5z3QwLtW8pSWIu6o20jwITMWcaQr1B32we3H95zJuKL8V tPMf4cQQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gAkcy-0003ne-Mt; Thu, 11 Oct 2018 23:44:24 +0000 Received: from mga12.intel.com ([192.55.52.136]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gAkZ0-0000vI-Tp for linux-arm-kernel@lists.infradead.org; Thu, 11 Oct 2018 23:40:26 +0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Oct 2018 16:40:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,370,1534834800"; d="scan'208";a="96792944" Received: from rpedgeco-desk5.jf.intel.com ([10.54.75.168]) by fmsmga004.fm.intel.com with ESMTP; 11 Oct 2018 16:40:05 -0700 From: Rick Edgecombe To: kernel-hardening@lists.openwall.com, daniel@iogearbox.net, keescook@chromium.org, catalin.marinas@arm.com, will.deacon@arm.com, davem@davemloft.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, arnd@arndb.de, jeyu@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH v2 5/7] mips/modules: Add rlimit checking for mips modules Date: Thu, 11 Oct 2018 16:31:15 -0700 Message-Id: <20181011233117.7883-6-rick.p.edgecombe@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181011233117.7883-1-rick.p.edgecombe@intel.com> References: <20181011233117.7883-1-rick.p.edgecombe@intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181011_164019_064848_BE470053 X-CRM114-Status: GOOD ( 12.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dave.hansen@intel.com, deneen.t.dock@intel.com, Rick Edgecombe , arjan@linux.intel.com, kristen@linux.intel.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This adds in the rlimit checking for the mips module allocator. This has not been tested. Signed-off-by: Rick Edgecombe --- arch/mips/kernel/module.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index 491605137b03..7a23392512d1 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -47,9 +47,18 @@ static DEFINE_SPINLOCK(dbe_lock); #ifdef MODULE_START void *module_alloc(unsigned long size) { - return __vmalloc_node_range(size, 1, MODULE_START, MODULE_END, + void *p; + + if (check_inc_mod_rlimit(size)) + return NULL; + + p = __vmalloc_node_range(size, 1, MODULE_START, MODULE_END, GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); + + update_mod_rlimit(p, size); + + return p; } #endif