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| author | Hou Tao <houtao@huaweicloud.com> | 2023-09-13 15:56:04 +0800 |
|---|---|---|
| committer | Luis Chamberlain <mcgrof@kernel.org> | 2023-09-20 19:09:39 -0700 |
| commit | e3de6bf25450940515b7065f1fd73b0ee2e0bc12 (patch) | |
| tree | a49f6284c7776207ba49f869ccec64bc4b64826a | |
| parent | d9bd054ca156cd1d37a97c003dbe9b3f1f32de4b (diff) | |
| download | linux-next-large-block-next.tar.gz | |
bpf: Skip unit_size checking for global per-cpu allocatorlarge-block-nextlarge-block-20230915
For global per-cpu allocator, the size of free object in free list
doesn't match with unit_size and now there is no way to get the size of
per-cpu pointer saved in free object, so just skip the checking.
Signed-off-by: Hou Tao <houtao1@huawei.com>
| -rw-r--r-- | kernel/bpf/memalloc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/bpf/memalloc.c b/kernel/bpf/memalloc.c index aad558cdc70f44..0ad175277f8980 100644 --- a/kernel/bpf/memalloc.c +++ b/kernel/bpf/memalloc.c @@ -491,6 +491,13 @@ static int check_obj_size(struct bpf_mem_cache *c, unsigned int idx) struct llist_node *first; unsigned int obj_size; + /* For per-cpu allocator, the size of free objects in free list doesn't + * match with unit_size and now there is no way to get the size of + * per-cpu pointer saved in free object, so just skip the checking. + */ + if (c->percpu_size) + return 0; + first = c->free_llist.first; if (!first) return 0; |