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[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) Received-SPF: pass (google.com: domain of rick.p.edgecombe@intel.com designates 192.55.52.151 as permitted sender) client-ip=192.55.52.151; Authentication-Results: mx.google.com; spf=pass (google.com: domain of rick.p.edgecombe@intel.com designates 192.55.52.151 as permitted sender) smtp.mailfrom=rick.p.edgecombe@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Nov 2018 16:34:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,288,1539673200"; d="scan'208";a="91641481" Received: from rpedgeco-desk5.jf.intel.com ([10.54.75.128]) by fmsmga007.fm.intel.com with ESMTP; 27 Nov 2018 16:34:07 -0800 From: Rick Edgecombe 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 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> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181128000754.18056-1-rick.p.edgecombe@intel.com> References: <20181128000754.18056-1-rick.p.edgecombe@intel.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP 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;