diff options
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/powerpc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/elf.h | 5 | ||||
| -rw-r--r-- | arch/s390/mm/mmap.c | 8 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | fs/Kconfig.binfmt | 3 | ||||
| -rw-r--r-- | fs/binfmt_elf.c | 18 |
9 files changed, 6 insertions, 33 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index f85200a..4b62f4c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1,7 +1,6 @@ config ARM bool default y - select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7c1dbeb..34f487d 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,6 +1,5 @@ config ARM64 def_bool y - select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 688ce27..a326c4c 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -23,7 +23,6 @@ config MIPS select HAVE_KRETPROBES select HAVE_DEBUG_KMEMLEAK select HAVE_SYSCALL_TRACEPOINTS - select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ELF_RANDOMIZE select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT select RTC_LIB if !MACH_LOONGSON diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index fc5fffb..e99014a 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -88,7 +88,6 @@ config PPC select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select BINFMT_ELF - select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ELF_RANDOMIZE select OF select OF_EARLY_FLATTREE diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index f8db478..ff66215 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -163,10 +163,9 @@ extern unsigned int vdso_enabled; the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. 64-bit tasks are aligned to 4GB. */ -extern unsigned long randomize_et_dyn(void); -#define ELF_ET_DYN_BASE (randomize_et_dyn() + (is_32bit_task() ? \ +#define ELF_ET_DYN_BASE (is_32bit_task() ? \ (STACK_TOP / 3 * 2) : \ - (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))) + (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1)) /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. */ diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 8c11536..bb3367c 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -177,14 +177,6 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, return addr; } -unsigned long randomize_et_dyn(void) -{ - if (current->flags & PF_RANDOMIZE) - return arch_mmap_rnd(); - - return 0UL; -} - #ifndef CONFIG_64BIT /* diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 782ddbb..1f7f185 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -87,7 +87,6 @@ config X86 select HAVE_ARCH_KMEMCHECK select HAVE_ARCH_KASAN if X86_64 && SPARSEMEM_VMEMMAP select HAVE_USER_RETURN_NOTIFIER - select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ELF_RANDOMIZE select HAVE_ARCH_JUMP_LABEL select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt index 270c481..2d0cbbd 100644 --- a/fs/Kconfig.binfmt +++ b/fs/Kconfig.binfmt @@ -27,9 +27,6 @@ config COMPAT_BINFMT_ELF bool depends on COMPAT && BINFMT_ELF -config ARCH_BINFMT_ELF_RANDOMIZE_PIE - bool - config ARCH_BINFMT_ELF_STATE bool diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index d925f55..b20c054 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -31,6 +31,7 @@ #include <linux/security.h> #include <linux/random.h> #include <linux/elf.h> +#include <linux/elf-randomize.h> #include <linux/utsname.h> #include <linux/coredump.h> #include <linux/sched.h> @@ -910,21 +911,10 @@ static int load_elf_binary(struct linux_binprm *bprm) * default mmap base, as well as whatever program they * might try to exec. This is because the brk will * follow the loader, and is not movable. */ -#ifdef CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE - /* Memory randomization might have been switched off - * in runtime via sysctl or explicit setting of - * personality flags. - * If that is the case, retain the original non-zero - * load_bias value in order to establish proper - * non-randomized mappings. - */ + load_bias = ELF_ET_DYN_BASE - vaddr; if (current->flags & PF_RANDOMIZE) - load_bias = 0; - else - load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr); -#else - load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr); -#endif + load_bias += arch_mmap_rnd(); + load_bias = ELF_PAGESTART(load_bias); total_size = total_mapping_size(elf_phdata, loc->elf_ex.e_phnum); if (!total_size) { |
