Commit 5ab8cb89 authored Mar 19, 2024 by Andrii Nakryiko Committed by Alexei Starovoitov Mar 19, 2024

libbpf: fix u64-to-pointer cast on 32-bit arches



It's been reported that (void *)map->map_extra is causing compilation
warnings on 32-bit architectures. It's easy enough to fix this by
casting to long first.

Fixes: 79ff13e9 ("libbpf: Add support for bpf_arena.")
Reported-by: Ryan Eatmon <reatmon@ti.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Message-ID: <20240319215143.1279312-1-andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

parent 7ded842b

tools/lib/bpf/libbpf.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -5352,8 +5352,8 @@ bpf_object__create_maps(struct bpf_object *obj)
		goto err_out;
		}
		if (map->def.type == BPF_MAP_TYPE_ARENA) {
		map->mmaped = mmap((void *)map->map_extra, bpf_map_mmap_sz(map),
		PROT_READ \| PROT_WRITE,
		map->mmaped = mmap((void *)(long)map->map_extra,
		bpf_map_mmap_sz(map), PROT_READ \| PROT_WRITE,
		map->map_extra ? MAP_SHARED \| MAP_FIXED : MAP_SHARED,
		map->fd, 0);
		if (map->mmaped == MAP_FAILED) {