diff options
Diffstat (limited to 'kernel/events/uprobes.c')
| -rw-r--r-- | kernel/events/uprobes.c | 30 |
1 files changed, 3 insertions, 27 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 6f1664d217d..ce59c100d65 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1010,7 +1010,7 @@ int uprobe_mmap(struct vm_area_struct *vma) struct list_head tmp_list; struct uprobe *uprobe, *u; struct inode *inode; - int ret, count; + int ret; if (!atomic_read(&uprobe_events) || !valid_vma(vma, true)) return 0; @@ -1023,8 +1023,6 @@ int uprobe_mmap(struct vm_area_struct *vma) build_probe_list(inode, vma, vma->vm_start, vma->vm_end, &tmp_list); ret = 0; - count = 0; - list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) { if (!ret) { unsigned long vaddr = offset_to_vaddr(vma, uprobe->offset); @@ -1034,19 +1032,11 @@ int uprobe_mmap(struct vm_area_struct *vma) * We can race against uprobe_register(), see the * comment near uprobe_hash(). */ - if (ret == -EEXIST) { + if (ret == -EEXIST) ret = 0; - - if (!is_swbp_at_addr(vma->vm_mm, vaddr)) - continue; - } - - if (!ret) - count++; } put_uprobe(uprobe); } - mutex_unlock(uprobes_mmap_hash(inode)); return ret; @@ -1057,27 +1047,13 @@ int uprobe_mmap(struct vm_area_struct *vma) */ void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end) { - struct list_head tmp_list; - struct uprobe *uprobe, *u; - struct inode *inode; - if (!atomic_read(&uprobe_events) || !valid_vma(vma, false)) return; if (!atomic_read(&vma->vm_mm->mm_users)) /* called by mmput() ? */ return; - inode = vma->vm_file->f_mapping->host; - if (!inode) - return; - - mutex_lock(uprobes_mmap_hash(inode)); - build_probe_list(inode, vma, start, end, &tmp_list); - - list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) { - put_uprobe(uprobe); - } - mutex_unlock(uprobes_mmap_hash(inode)); + /* TODO: unmapping uprobe(s) will need more work */ } /* Slot allocation for XOL */ |