diff options
| -rw-r--r-- | arch/x86/entry/vdso/vma.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index 8f98c2d7c7a9..e7fd7517370f 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -65,16 +65,12 @@ static vm_fault_t vdso_fault(const struct vm_special_mapping *sm, static void vdso_fix_landing(const struct vdso_image *image, struct vm_area_struct *new_vma) { - if (in_ia32_syscall() && image == &vdso32_image) { - struct pt_regs *regs = current_pt_regs(); - unsigned long vdso_land = image->sym_int80_landing_pad; - unsigned long old_land_addr = vdso_land + - (unsigned long)current->mm->context.vdso; - - /* Fixing userspace landing - look at do_fast_syscall_32 */ - if (regs->ip == old_land_addr) - regs->ip = new_vma->vm_start + vdso_land; - } + struct pt_regs *regs = current_pt_regs(); + unsigned long ipoffset = regs->ip - + (unsigned long)current->mm->context.vdso; + + if (ipoffset < image->size) + regs->ip = new_vma->vm_start + ipoffset; } static int vdso_mremap(const struct vm_special_mapping *sm, |