Commit 2c8b09ac authored by Sidong Yang's avatar Sidong Yang Committed by Alexei Starovoitov
Browse files

libbpf: Change hash_combine parameters from long to unsigned long 



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: default avatarSidong Yang <sidong.yang@furiosa.ai>
Acked-by: default avatarYonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20241116081054.65195-1-sidong.yang@furiosa.ai


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 608e99f7

tools/lib/bpf/btf.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

}