diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 3f758c7f4c81..1aed183636d7 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -30,6 +30,7 @@ #include <linux/perf_event.h> #include <linux/audit.h> #include <linux/khugepaged.h> +#include <linux/uprobes.h> #include <asm/uaccess.h> #include <asm/cacheflush.h> @@ -616,6 +617,13 @@ again: remove_next = 1 + (end > next->vm_end); if (mapping) mutex_unlock(&mapping->i_mmap_mutex); + if (root) { + mmap_uprobe(vma); + + if (adjust_next) + mmap_uprobe(next); + } + if (remove_next) { if (file) { fput(file); @@ -637,6 +645,8 @@ again: remove_next = 1 + (end > next->vm_end); goto again; } } + if (insert && file) + mmap_uprobe(insert); validate_mm(mm); @@ -1329,6 +1339,11 @@ out: mm->locked_vm += (len >> PAGE_SHIFT); } else if ((flags & MAP_POPULATE) && !(flags & MAP_NONBLOCK)) make_pages_present(addr, addr + len); + + if (file && mmap_uprobe(vma)) + /* matching probes but cannot insert */ + goto unmap_and_free_vma; + return addr; unmap_and_free_vma: @@ -2285,6 +2300,10 @@ int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma) if ((vma->vm_flags & VM_ACCOUNT) && security_vm_enough_memory_mm(mm, vma_pages(vma))) return -ENOMEM; + + if (vma->vm_file && mmap_uprobe(vma)) + return -EINVAL; + vma_link(mm, vma, prev, rb_link, rb_parent); return 0; } @@ -2354,6 +2373,10 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, new_vma->vm_pgoff = pgoff; if (new_vma->vm_file) { get_file(new_vma->vm_file); + + if (mmap_uprobe(new_vma)) + goto out_free_mempol; + if (vma->vm_flags & VM_EXECUTABLE) added_exe_file_vma(mm); } |