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authorAndrey Ryabinin <a.ryabinin@samsung.com>2015-02-13 14:40:07 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-13 21:21:42 -0800
commitcb9e3c292d0115499c660028ad35ac5501d722b5 (patch)
tree5345bc82199c3cd843ea36d34aadaa0894bdd340 /arch
parent71394fe50146202f2c8d92cf50f5ebc761acf254 (diff)
mm: vmalloc: pass additional vm_flags to __vmalloc_node_range()
For instrumenting global variables KASan will shadow memory backing memory for modules. So on module loading we will need to allocate memory for shadow and map it at address in shadow that corresponds to the address allocated in module_alloc(). __vmalloc_node_range() could be used for this purpose, except it puts a guard hole after allocated area. Guard hole in shadow memory should be a problem because at some future point we might need to have a shadow memory at address occupied by guard hole. So we could fail to allocate shadow for module_alloc(). Now we have VM_NO_GUARD flag disabling guard page, so we need to pass into __vmalloc_node_range(). Add new parameter 'vm_flags' to __vmalloc_node_range() function. Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Konstantin Serebryany <kcc@google.com> Cc: Dmitry Chernenkov <dmitryc@google.com> Signed-off-by: Andrey Konovalov <adech.fo@gmail.com> Cc: Yuri Gribov <tetra2005@gmail.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/module.c2
-rw-r--r--arch/arm64/kernel/module.c4
-rw-r--r--arch/mips/kernel/module.c2
-rw-r--r--arch/parisc/kernel/module.c2
-rw-r--r--arch/s390/kernel/module.c2
-rw-r--r--arch/sparc/kernel/module.c2
-rw-r--r--arch/unicore32/kernel/module.c2
-rw-r--r--arch/x86/kernel/module.c2
8 files changed, 9 insertions, 9 deletions
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index bea7db9e5b80..2e11961f65ae 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -41,7 +41,7 @@
void *module_alloc(unsigned long size)
{
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
+ GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
#endif
diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c
index 9b6f71db2709..67bf4107f6ef 100644
--- a/arch/arm64/kernel/module.c
+++ b/arch/arm64/kernel/module.c
@@ -35,8 +35,8 @@
void *module_alloc(unsigned long size)
{
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
- __builtin_return_address(0));
+ GFP_KERNEL, PAGE_KERNEL_EXEC, 0,
+ NUMA_NO_NODE, __builtin_return_address(0));
}
enum aarch64_reloc_op {
diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c
index 2a52568dbcd6..1833f5171ccd 100644
--- a/arch/mips/kernel/module.c
+++ b/arch/mips/kernel/module.c
@@ -47,7 +47,7 @@ static DEFINE_SPINLOCK(dbe_lock);
void *module_alloc(unsigned long size)
{
return __vmalloc_node_range(size, 1, MODULE_START, MODULE_END,
- GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE,
+ GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
#endif
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 5822e8e200e6..3c63a820fcda 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -219,7 +219,7 @@ void *module_alloc(unsigned long size)
* init_data correctly */
return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
GFP_KERNEL | __GFP_HIGHMEM,
- PAGE_KERNEL_RWX, NUMA_NO_NODE,
+ PAGE_KERNEL_RWX, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 409d152585be..36154a2f1814 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -50,7 +50,7 @@ void *module_alloc(unsigned long size)
if (PAGE_ALIGN(size) > MODULES_LEN)
return NULL;
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE,
+ GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
#endif
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 97655e0fd243..192a617a32f3 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -29,7 +29,7 @@ static void *module_map(unsigned long size)
if (PAGE_ALIGN(size) > MODULES_LEN)
return NULL;
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE,
+ GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
#else
diff --git a/arch/unicore32/kernel/module.c b/arch/unicore32/kernel/module.c
index dc41f6dfedb6..e191b3448bd3 100644
--- a/arch/unicore32/kernel/module.c
+++ b/arch/unicore32/kernel/module.c
@@ -25,7 +25,7 @@
void *module_alloc(unsigned long size)
{
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
+ GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index e69f9882bf95..e830e61aae05 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -88,7 +88,7 @@ void *module_alloc(unsigned long size)
return __vmalloc_node_range(size, 1,
MODULES_VADDR + get_module_load_offset(),
MODULES_END, GFP_KERNEL | __GFP_HIGHMEM,
- PAGE_KERNEL_EXEC, NUMA_NO_NODE,
+ PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}