From 8f7b239ea8cfdc8e64c875ee417fed41431a1f37 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Sun, 7 Nov 2021 08:55:14 -0800 Subject: libbpf: Free up resources used by inner map definition It's not enough to just free(map->inner_map), as inner_map itself can have extra memory allocated, like map name. Fixes: 646f02ffdd49 ("libbpf: Add BTF-defined map-in-map support") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Reviewed-by: Hengqi Chen Link: https://lore.kernel.org/bpf/20211107165521.9240-3-andrii@kernel.org --- tools/lib/bpf/libbpf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools/lib/bpf/libbpf.c') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index dfd15cc60ea7..d869ebee1e27 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -9009,7 +9009,10 @@ int bpf_map__set_inner_map_fd(struct bpf_map *map, int fd) pr_warn("error: inner_map_fd already specified\n"); return libbpf_err(-EINVAL); } - zfree(&map->inner_map); + if (map->inner_map) { + bpf_map__destroy(map->inner_map); + zfree(&map->inner_map); + } map->inner_map_fd = fd; return 0; } -- cgit v1.2.3-59-g8ed1b