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| author | Tony Lindgren <tony@atomide.com> | 2020-06-08 10:14:49 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2020-06-08 10:14:49 -0700 |
| commit | 4263eb6880df8383fff0efb872278a99eb6142c8 (patch) | |
| tree | 67ab9bf228e4f5f341f9408e055180932b39fe06 /kernel/bpf/arraymap.c | |
| parent | 636338d7968e47c7f2e0b772a2a825ad932883fb (diff) | |
| parent | 8e326a8bdef3fb42b92bf2742e8405d9b9209367 (diff) | |
| download | linux-4263eb6880df8383fff0efb872278a99eb6142c8.tar.bz2 | |
Merge branch 'fixes-v5.7' into fixes
Diffstat (limited to 'kernel/bpf/arraymap.c')
| -rw-r--r-- | kernel/bpf/arraymap.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index 95d77770353c..1d6120fd5ba6 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -486,7 +486,12 @@ static int array_map_mmap(struct bpf_map *map, struct vm_area_struct *vma) if (!(map->map_flags & BPF_F_MMAPABLE)) return -EINVAL; - return remap_vmalloc_range(vma, array_map_vmalloc_addr(array), pgoff); + if (vma->vm_pgoff * PAGE_SIZE + (vma->vm_end - vma->vm_start) > + PAGE_ALIGN((u64)array->map.max_entries * array->elem_size)) + return -EINVAL; + + return remap_vmalloc_range(vma, array_map_vmalloc_addr(array), + vma->vm_pgoff + pgoff); } const struct bpf_map_ops array_map_ops = { |