Check there is a next before checking the bounds. Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> --- mm/mmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/mmap.c b/mm/mmap.c index 4279e2acd243..f1fc9c5c068b 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -583,7 +583,7 @@ inline int vma_expand(struct ma_state *mas, struct vm_area_struct *vma, } /* Not merging but overwriting any part of next is not handled. */ - VM_BUG_ON(!remove_next && next != vma && end > next->vm_start); + VM_BUG_ON(next && !remove_next && next != vma && end > next->vm_start); /* Only handles expanding */ VM_BUG_ON(vma->vm_start < start || vma->vm_end > end); -- 2.35.1
