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Message-Id: <20181128000754.18056-3-rick.p.edgecombe@intel.com>
Date: Tue, 27 Nov 2018 16:07:54 -0800
From: Rick Edgecombe <rick.p.edgecombe@...el.com>
To: akpm@...ux-foundation.org,
luto@...nel.org,
will.deacon@....com,
linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
naveen.n.rao@...ux.vnet.ibm.com,
anil.s.keshavamurthy@...el.com,
davem@...emloft.net,
mhiramat@...nel.org,
rostedt@...dmis.org,
mingo@...hat.com,
ast@...nel.org,
daniel@...earbox.net,
jeyu@...nel.org,
netdev@...r.kernel.org,
ard.biesheuvel@...aro.org,
jannh@...gle.com
Cc: kristen@...ux.intel.com,
dave.hansen@...el.com,
deneen.t.dock@...el.com,
Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: [PATCH 2/2] x86/modules: Make x86 allocs to flush when free
Change the module allocations to flush before freeing the pages.
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
---
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
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