diff options
| author | Soma Nakata <soma.nakata@somane.sakura.ne.jp> | 2025-01-07 08:15:35 +0900 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-01-08 09:35:33 -0800 |
| commit | b8b1e30016260aba338a65fdcc2bfd50933c6f0a (patch) | |
| tree | 34aedc98590328ee0eb9e9431addf4f4ce81888d /kernel/bpf | |
| parent | bab18c7db44d3aa6c84450095451580922359c7a (diff) | |
bpf: Fix range_tree_set() error handling
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>
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/arena.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/bpf/arena.c b/kernel/bpf/arena.c index 41a76ca56040..4b22a651b5d5 100644 --- a/kernel/bpf/arena.c +++ b/kernel/bpf/arena.c @@ -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; |