lkml.org 
[lkml]   [2011]   [Jun]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [PATCH v4 3.0-rc2-tip 4/22] 4: Uprobes: register/unregister probes.
    From
    Date
    On Tue, 2011-06-07 at 18:29 +0530, Srikar Dronamraju wrote:
    > + vma_prio_tree_foreach(vma, &iter, &mapping->i_mmap, 0, 0) {
    > + loff_t vaddr;
    > + struct task_struct *tsk;
    > +
    > + if (!atomic_inc_not_zero(&vma->vm_mm->mm_users))
    > + continue;
    > +
    > + mm = vma->vm_mm;
    > + if (!valid_vma(vma)) {
    > + mmput(mm);
    > + continue;
    > + }
    > +
    > + vaddr = vma->vm_start + offset;
    > + vaddr -= vma->vm_pgoff << PAGE_SHIFT;
    > + if (vaddr < vma->vm_start || vaddr > vma->vm_end) {
    > + /* Not in this vma */
    > + mmput(mm);
    > + continue;
    > + }
    > + tsk = get_mm_owner(mm);
    > + if (tsk && vaddr > TASK_SIZE_OF(tsk)) {
    > + /*
    > + * We cannot have a virtual address that is
    > + * greater than TASK_SIZE_OF(tsk)
    > + */
    > + put_task_struct(tsk);
    > + mmput(mm);
    > + continue;
    > + }
    > + put_task_struct(tsk);
    > + mm->uprobes_vaddr = (unsigned long) vaddr;
    > + list_add(&mm->uprobes_list, &try_list);
    > + }

    This still falls flat on its face when there's multiple maps of the same
    text in one mm.



    \
     
     \ /
      Last update: 2011-06-10 01:03    [W:0.024 / U:59.076 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site