diff options
Diffstat (limited to 'arch/x86/vdso/vma.c')
| -rw-r--r-- | arch/x86/vdso/vma.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 9c98cc6ba97..21e1aeb9f3e 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -8,6 +8,7 @@ #include <linux/sched.h> #include <linux/init.h> #include <linux/random.h> +#include <linux/elf.h> #include <asm/vsyscall.h> #include <asm/vgtod.h> #include <asm/proto.h> @@ -85,8 +86,8 @@ static unsigned long vdso_addr(unsigned long start, unsigned len) unsigned long addr, end; unsigned offset; end = (start + PMD_SIZE - 1) & PMD_MASK; - if (end >= TASK_SIZE64) - end = TASK_SIZE64; + if (end >= TASK_SIZE_MAX) + end = TASK_SIZE_MAX; end -= len; /* This loses some more bits than a modulo, but is cheaper */ offset = get_random_int() & (PTRS_PER_PTE - 1); @@ -115,15 +116,18 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) goto up_fail; } + current->mm->context.vdso = (void *)addr; + ret = install_special_mapping(mm, addr, vdso_size, VM_READ|VM_EXEC| VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| VM_ALWAYSDUMP, vdso_pages); - if (ret) + if (ret) { + current->mm->context.vdso = NULL; goto up_fail; + } - current->mm->context.vdso = (void *)addr; up_fail: up_write(&mm->mmap_sem); return ret; |