diff options
| -rw-r--r-- | arch/powerpc/kernel/vdso.c | 4 | ||||
| -rw-r--r-- | fs/exec.c | 6 | ||||
| -rw-r--r-- | include/linux/sched.h | 5 |
3 files changed, 11 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index f0c47dab090..04f7df39ffb 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -182,8 +182,8 @@ static struct page * vdso_vma_nopage(struct vm_area_struct * vma, unsigned long offset = address - vma->vm_start; struct page *pg; #ifdef CONFIG_PPC64 - void *vbase = test_thread_flag(TIF_32BIT) ? - vdso32_kbase : vdso64_kbase; + void *vbase = (vma->vm_mm->task_size > TASK_SIZE_USER32) ? + vdso64_kbase : vdso32_kbase; #else void *vbase = vdso32_kbase; #endif diff --git a/fs/exec.c b/fs/exec.c index 0e1c95074d4..0b515ac5313 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -885,6 +885,12 @@ int flush_old_exec(struct linux_binprm * bprm) current->flags &= ~PF_RANDOMIZE; flush_thread(); + /* Set the new mm task size. We have to do that late because it may + * depend on TIF_32BIT which is only updated in flush_thread() on + * some architectures like powerpc + */ + current->mm->task_size = TASK_SIZE; + if (bprm->e_uid != current->euid || bprm->e_gid != current->egid || file_permission(bprm->file, MAY_READ) || (bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP)) { diff --git a/include/linux/sched.h b/include/linux/sched.h index b6f51e3a38e..ff2e09c953b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -298,8 +298,9 @@ struct mm_struct { unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags); void (*unmap_area) (struct mm_struct *mm, unsigned long addr); - unsigned long mmap_base; /* base of mmap area */ - unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */ + unsigned long mmap_base; /* base of mmap area */ + unsigned long task_size; /* size of task vm space */ + unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */ unsigned long free_area_cache; /* first hole of size cached_hole_size or larger */ pgd_t * pgd; atomic_t mm_users; /* How many users with user space? */ |