diff options
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/arm64ksyms.c | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/head.S | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/image.h | 6 | ||||
| -rw-r--r-- | arch/arm64/kernel/module.c | 16 | ||||
| -rw-r--r-- | arch/arm64/kernel/setup.c | 4 |
6 files changed, 31 insertions, 3 deletions
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 7b17f6245f1e..1b6bda2ff102 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -7,6 +7,8 @@ AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET) CFLAGS_efi-stub.o := -DTEXT_OFFSET=$(TEXT_OFFSET) CFLAGS_armv8_deprecated.o := -I$(src) +KASAN_SANITIZE_efi-stub.o := n + CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_insn.o = -pg CFLAGS_REMOVE_return_address.o = -pg diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c index a85843ddbde8..3b6d8cc9dfe0 100644 --- a/arch/arm64/kernel/arm64ksyms.c +++ b/arch/arm64/kernel/arm64ksyms.c @@ -51,6 +51,9 @@ EXPORT_SYMBOL(strnlen); EXPORT_SYMBOL(memset); EXPORT_SYMBOL(memcpy); EXPORT_SYMBOL(memmove); +EXPORT_SYMBOL(__memset); +EXPORT_SYMBOL(__memcpy); +EXPORT_SYMBOL(__memmove); EXPORT_SYMBOL(memchr); EXPORT_SYMBOL(memcmp); diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 28a81e948df9..2a8c1d5b3fae 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -444,6 +444,9 @@ __mmap_switched: str_l x21, __fdt_pointer, x5 // Save FDT pointer str_l x24, memstart_addr, x6 // Save PHYS_OFFSET mov x29, #0 +#ifdef CONFIG_KASAN + bl kasan_early_init +#endif b start_kernel ENDPROC(__mmap_switched) diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index e083af0dd546..6eb8fee93321 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h @@ -80,6 +80,12 @@ __efistub_strcmp = __pi_strcmp; __efistub_strncmp = __pi_strncmp; __efistub___flush_dcache_area = __pi___flush_dcache_area; +#ifdef CONFIG_KASAN +__efistub___memcpy = __pi_memcpy; +__efistub___memmove = __pi_memmove; +__efistub___memset = __pi_memset; +#endif + __efistub__text = _text; __efistub__end = _end; __efistub__edata = _edata; diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c index 876eb8df50bf..f4bc779e62e8 100644 --- a/arch/arm64/kernel/module.c +++ b/arch/arm64/kernel/module.c @@ -21,6 +21,7 @@ #include <linux/bitops.h> #include <linux/elf.h> #include <linux/gfp.h> +#include <linux/kasan.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/moduleloader.h> @@ -34,9 +35,18 @@ void *module_alloc(unsigned long size) { - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL_EXEC, 0, - NUMA_NO_NODE, __builtin_return_address(0)); + void *p; + + p = __vmalloc_node_range(size, MODULE_ALIGN, MODULES_VADDR, MODULES_END, + GFP_KERNEL, PAGE_KERNEL_EXEC, 0, + NUMA_NO_NODE, __builtin_return_address(0)); + + if (p && (kasan_module_alloc(p, size) < 0)) { + vfree(p); + return NULL; + } + + return p; } enum aarch64_reloc_op { diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 6bab21f84a9f..79df79a2ea61 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -54,6 +54,7 @@ #include <asm/elf.h> #include <asm/cpufeature.h> #include <asm/cpu_ops.h> +#include <asm/kasan.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/smp_plat.h> @@ -434,6 +435,9 @@ void __init setup_arch(char **cmdline_p) paging_init(); relocate_initrd(); + + kasan_init(); + request_standard_resources(); early_ioremap_reset(); |