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    SubjectRe: [PATCH v2 2.6.38-rc8-tip 5/20] 5: Uprobes: register/unregister probes.
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    On Mon, 2011-03-14 at 19:04 +0530, Srikar Dronamraju wrote:
    > +/* Returns 0 if it can install one probe */
    > +int register_uprobe(struct inode *inode, loff_t offset,
    > + struct uprobe_consumer *consumer)
    > +{
    > + struct prio_tree_iter iter;
    > + struct list_head tmp_list;
    > + struct address_space *mapping;
    > + struct mm_struct *mm, *tmpmm;
    > + struct vm_area_struct *vma;
    > + struct uprobe *uprobe;
    > + int ret = -1;
    > +
    > + if (!inode || !consumer || consumer->next)
    > + return -EINVAL;
    > + uprobe = uprobes_add(inode, offset);

    What happens if uprobes_add() returns NULL?

    -- Steve

    > + INIT_LIST_HEAD(&tmp_list);
    > +
    > + mapping = inode->i_mapping;
    > +
    > + mutex_lock(&uprobes_mutex);
    > + if (uprobe->consumers) {
    > + ret = 0;
    > + goto consumers_add;
    > + }



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