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| author | Jeremy Linton <jeremy.linton@arm.com> | 2016-02-19 20:50:32 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-02-26 18:08:04 +0300 |
| commit | 2f39b5f91eb4bccd786d194e70db1dccad784755 (patch) | |
| tree | 726713a839445a87a77fa05fb369cd0107e60346 /arch/arm64/mm/init.c | |
| parent | b7dc8d16e76c25409d93ff3aceda42fc386efc4e (diff) | |
| download | linux-2f39b5f91eb4bccd786d194e70db1dccad784755.tar.xz | |
arm64: mm: Mark .rodata as RO
Currently the .rodata section is actually still executable when DEBUG_RODATA
is enabled. This changes that so the .rodata is actually read only, no execute.
It also adds the .rodata section to the mem_init banner.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
[catalin.marinas@arm.com: added vm_struct vmlinux_rodata in map_kernel()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 80c8bdeeb41a..b938de23dc77 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -363,6 +363,7 @@ void __init mem_init(void) " vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n" " .init : 0x%p" " - 0x%p" " (%6ld KB)\n" " .text : 0x%p" " - 0x%p" " (%6ld KB)\n" + " .rodata : 0x%p" " - 0x%p" " (%6ld KB)\n" " .data : 0x%p" " - 0x%p" " (%6ld KB)\n" #ifdef CONFIG_SPARSEMEM_VMEMMAP " vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n" @@ -377,7 +378,8 @@ void __init mem_init(void) MLM(MODULES_VADDR, MODULES_END), MLG(VMALLOC_START, VMALLOC_END), MLK_ROUNDUP(__init_begin, __init_end), - MLK_ROUNDUP(_text, _etext), + MLK_ROUNDUP(_text, __start_rodata), + MLK_ROUNDUP(__start_rodata, _etext), MLK_ROUNDUP(_sdata, _edata), #ifdef CONFIG_SPARSEMEM_VMEMMAP MLG((unsigned long)vmemmap, |