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| author | Hou Tao <houtao1@huawei.com> | 2023-01-18 16:46:30 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-18 18:36:26 -0800 |
| commit | 36024d023d139a0c8b552dc3b7f4dc7b4c139e8f (patch) | |
| tree | d9b467655efdc282615f11275f5783dea4561c86 /kernel | |
| parent | b9fb10d131b8c84af9bb14e2078d5c63600c7dea (diff) | |
| download | linux-36024d023d139a0c8b552dc3b7f4dc7b4c139e8f.tar.gz linux-36024d023d139a0c8b552dc3b7f4dc7b4c139e8f.tar.bz2 linux-36024d023d139a0c8b552dc3b7f4dc7b4c139e8f.zip | |
bpf: Fix off-by-one error in bpf_mem_cache_idx()
According to the definition of sizes[NUM_CACHES], when the size passed
to bpf_mem_cache_size() is 256, it should return 6 instead 7.
Fixes: 7c8199e24fa0 ("bpf: Introduce any context BPF specific memory allocator.")
Signed-off-by: Hou Tao <houtao1@huawei.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230118084630.3750680-1-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/memalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/memalloc.c b/kernel/bpf/memalloc.c index ebcc3dd0fa19..1db156405b68 100644 --- a/kernel/bpf/memalloc.c +++ b/kernel/bpf/memalloc.c @@ -71,7 +71,7 @@ static int bpf_mem_cache_idx(size_t size) if (size <= 192) return size_index[(size - 1) / 8] - 1; - return fls(size - 1) - 1; + return fls(size - 1) - 2; } #define NUM_CACHES 11 |