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: 10637623 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 64AAC112B for ; Thu, 11 Oct 2018 23:41:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 52B3F2C312 for ; Thu, 11 Oct 2018 23:41:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 466A22C31A; Thu, 11 Oct 2018 23:41:09 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.wl.linuxfoundation.org (Postfix) with SMTP id 85A362C312 for ; Thu, 11 Oct 2018 23:41:08 +0000 (UTC) Received: (qmail 17780 invoked by uid 550); 11 Oct 2018 23:40:22 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 17632 invoked from network); 11 Oct 2018 23:40:20 -0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,370,1534834800"; d="scan'208";a="96792944" 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 Cc: kristen@linux.intel.com, dave.hansen@intel.com, arjan@linux.intel.com, deneen.t.dock@intel.com, Rick Edgecombe 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-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