Use vma_lookup() to find the VMA at a specific address. As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.
Link: https://lkml.kernel.org/r/20210521174745.2219620-9-Liam.Howlett@Oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* to this process.
*/
mmap_read_lock(current->mm);
* to this process.
*/
mmap_read_lock(current->mm);
- vma = find_vma(current->mm, addr);
- if (!vma || addr < vma->vm_start || addr + len > vma->vm_end)
+ vma = vma_lookup(current->mm, addr);
+ if (!vma || addr + len > vma->vm_end)