diff options
Diffstat (limited to 'arch/um/kernel/um_arch.c')
| -rw-r--r-- | arch/um/kernel/um_arch.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 0760e24f2eba..e0de60e503b9 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -16,6 +16,7 @@ #include <linux/sched/task.h> #include <linux/kmsg_dump.h> #include <linux/suspend.h> +#include <linux/random.h> #include <asm/processor.h> #include <asm/cpufeature.h> @@ -406,6 +407,8 @@ int __init __weak read_initrd(void) void __init setup_arch(char **cmdline_p) { + u8 rng_seed[32]; + stack_protections((unsigned long) &init_thread_info); setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem); mem_total_pages(physmem_size, iomem_size, highmem); @@ -416,6 +419,11 @@ void __init setup_arch(char **cmdline_p) strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; setup_hostinfo(host_info, sizeof host_info); + + if (os_getrandom(rng_seed, sizeof(rng_seed), 0) == sizeof(rng_seed)) { + add_bootloader_randomness(rng_seed, sizeof(rng_seed)); + memzero_explicit(rng_seed, sizeof(rng_seed)); + } } void __init check_bugs(void) @@ -432,6 +440,10 @@ void apply_retpolines(s32 *start, s32 *end) { } +void apply_returns(s32 *start, s32 *end) +{ +} + void apply_alternatives(struct alt_instr *start, struct alt_instr *end) { } |