From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) by kanga.kvack.org (Postfix) with ESMTP id ECCBD6B467E for ; Tue, 27 Nov 2018 19:34:08 -0500 (EST) Received: by mail-pf1-f198.google.com with SMTP id 75so13171317pfq.8 for ; Tue, 27 Nov 2018 16:34:08 -0800 (PST) Received: from mga17.intel.com (mga17.intel.com. [192.55.52.151]) by mx.google.com with ESMTPS id s5si5346864pfi.134.2018.11.27.16.34.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Nov 2018 16:34:07 -0800 (PST) From: Rick Edgecombe Subject: [PATCH 2/2] x86/modules: Make x86 allocs to flush when free Date: Tue, 27 Nov 2018 16:07:54 -0800 Message-Id: <20181128000754.18056-3-rick.p.edgecombe@intel.com> In-Reply-To: <20181128000754.18056-1-rick.p.edgecombe@intel.com> References: <20181128000754.18056-1-rick.p.edgecombe@intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org, luto@kernel.org, will.deacon@arm.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com, naveen.n.rao@linux.vnet.ibm.com, anil.s.keshavamurthy@intel.com, davem@davemloft.net, mhiramat@kernel.org, rostedt@goodmis.org, mingo@redhat.com, ast@kernel.org, daniel@iogearbox.net, jeyu@kernel.org, netdev@vger.kernel.org, ard.biesheuvel@linaro.org, jannh@google.com Cc: kristen@linux.intel.com, dave.hansen@intel.com, deneen.t.dock@intel.com, Rick Edgecombe Change the module allocations to flush before freeing the pages. Signed-off-by: Rick Edgecombe --- arch/x86/kernel/module.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c index b052e883dd8c..1694daf256b3 100644 --- a/arch/x86/kernel/module.c +++ b/arch/x86/kernel/module.c @@ -87,8 +87,8 @@ void *module_alloc(unsigned long size) p = __vmalloc_node_range(size, MODULE_ALIGN, MODULES_VADDR + get_module_load_offset(), MODULES_END, GFP_KERNEL, - PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, - __builtin_return_address(0)); + PAGE_KERNEL_EXEC, VM_IMMEDIATE_UNMAP, + NUMA_NO_NODE, __builtin_return_address(0)); if (p && (kasan_module_alloc(p, size) < 0)) { vfree(p); return NULL; -- 2.17.1