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bpf: Fix range_tree_set() error handling

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range_tree_set() might fail and return -ENOMEM,
causing subsequent `bpf_arena_alloc_pages` to fail.
Add the error handling.

Signed-off-by: Soma Nakata <soma.nakata@somane.sakura.ne.jp>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20250106231536.52856-1-soma.nakata@somane.sakura.ne.jp
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Soma Nakata
2025-01-08 09:35:33 -08:00
committed by Alexei Starovoitov
parent bab18c7db4
commit b8b1e30016
1 changed files with 5 additions and 1 deletions
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kernel/bpf/arena.c
+5 -1
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@@ -138,7 +138,11 @@ static struct bpf_map *arena_map_alloc(union bpf_attr *attr)
INIT_LIST_HEAD(&arena->vma_list);
bpf_map_init_from_attr(&arena->map, attr);
range_tree_init(&arena->rt);
range_tree_set(&arena->rt, 0, attr->max_entries);
err = range_tree_set(&arena->rt, 0, attr->max_entries);
if (err) {
bpf_map_area_free(arena);
goto err;
}
mutex_init(&arena->lock);
return &arena->map;