diff options
| -rw-r--r-- | kernel/events/uprobes.c | 2 | ||||
| -rw-r--r-- | mm/mmap.c | 9 | ||||
| -rw-r--r-- | mm/mremap.c | 4 |
3 files changed, 8 insertions, 7 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index c74761004ee5..ece7e13f6e4a 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1457,7 +1457,7 @@ static int xol_add_vma(struct mm_struct *mm, struct xol_area *area) /* Try to map as high as possible, this is only a hint. */ area->vaddr = get_unmapped_area(NULL, TASK_SIZE - PAGE_SIZE, PAGE_SIZE, 0, 0); - if (area->vaddr & ~PAGE_MASK) { + if (IS_ERR_VALUE(area->vaddr)) { ret = area->vaddr; goto fail; } diff --git a/mm/mmap.c b/mm/mmap.c index 311b08f780ce..b9d0c2f3f6bf 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1417,7 +1417,7 @@ unsigned long do_mmap(struct file *file, unsigned long addr, * that it represents a valid section of the address space. */ addr = get_unmapped_area(file, addr, len, pgoff, flags); - if (offset_in_page(addr)) + if (IS_ERR_VALUE(addr)) return addr; if (flags & MAP_FIXED_NOREPLACE) { @@ -2981,15 +2981,16 @@ static int do_brk_flags(unsigned long addr, unsigned long len, unsigned long fla struct rb_node **rb_link, *rb_parent; pgoff_t pgoff = addr >> PAGE_SHIFT; int error; + unsigned long mapped_addr; /* Until we need other flags, refuse anything except VM_EXEC. */ if ((flags & (~VM_EXEC)) != 0) return -EINVAL; flags |= VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; - error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED); - if (offset_in_page(error)) - return error; + mapped_addr = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED); + if (IS_ERR_VALUE(mapped_addr)) + return mapped_addr; error = mlock_future_check(mm, mm->def_flags, len); if (error) diff --git a/mm/mremap.c b/mm/mremap.c index 1fc8a29fbe3f..122938dcec15 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -558,7 +558,7 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len, ret = get_unmapped_area(vma->vm_file, new_addr, new_len, vma->vm_pgoff + ((addr - vma->vm_start) >> PAGE_SHIFT), map_flags); - if (offset_in_page(ret)) + if (IS_ERR_VALUE(ret)) goto out1; ret = move_vma(vma, addr, old_len, new_len, new_addr, locked, uf, @@ -706,7 +706,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, vma->vm_pgoff + ((addr - vma->vm_start) >> PAGE_SHIFT), map_flags); - if (offset_in_page(new_addr)) { + if (IS_ERR_VALUE(new_addr)) { ret = new_addr; goto out; } |