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libbpf: Change hash_combine parameters from long to unsigned long

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The hash_combine() could be trapped when compiled with sanitizer like "zig cc"
or clang with signed-integer-overflow option. This patch parameters and return
type to unsigned long to remove the potential overflow.

Signed-off-by: Sidong Yang <sidong.yang@furiosa.ai>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20241116081054.65195-1-sidong.yang@furiosa.ai
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Sidong Yang 2024-11-16 17:10:52 +09:00 committed by Alexei Starovoitov
parent 608e99f786
commit 2c8b09ac25
1 changed files with 1 additions and 1 deletions
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tools/lib/bpf/btf.c
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@ -3548,7 +3548,7 @@ struct btf_dedup {
struct strset *strs_set;
};
static long hash_combine(long h, long value)
static unsigned long hash_combine(unsigned long h, unsigned long value)
{
return h * 31 + value;
}