Messages in this thread Patch in this message | | | Date | Sun, 15 Dec 2019 15:43:55 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH -mm 1/2] ELF: make BAD_ADDR() unlikely |
| |
If some mapping goes past TASK_SIZE it will be rejected by kernel which means no such userspace binaries exist.
Mark every such check as unlikely.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
fs/binfmt_elf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -97,7 +97,7 @@ static struct linux_binfmt elf_format = { .min_coredump = ELF_EXEC_PAGESIZE, }; -#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE) +#define BAD_ADDR(x) (unlikely((unsigned long)(x) >= TASK_SIZE)) static int set_brk(unsigned long start, unsigned long end, int prot) {
| |