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authorAndrii Nakryiko <andriin@fb.com>2020-08-13 13:49:42 -0700
committerAlexei Starovoitov <ast@kernel.org>2020-08-13 16:45:41 -0700
commit4c01925f583eaa7d9d003dc87a4b75b8140b4ff6 (patch)
tree86d5cd277a6ebb83aa6dbfb7ab4a950f5cd22a32 /tools/lib/bpf
parenteed7818adf03e874994b966aa33bc00204dd275a (diff)
libbpf: Enforce 64-bitness of BTF for BPF object files
BPF object files are always targeting 64-bit BPF target architecture, so enforce that at BTF level as well. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-7-andriin@fb.com
Diffstat (limited to 'tools/lib/bpf')
-rw-r--r--tools/lib/bpf/libbpf.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 6accddaaedab..5d20b2da4427 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -2434,6 +2434,8 @@ static int bpf_object__init_btf(struct bpf_object *obj,
BTF_ELF_SEC, err);
goto out;
}
+ /* enforce 8-byte pointers for BPF-targeted BTFs */
+ btf__set_pointer_size(obj->btf, 8);
err = 0;
}
if (btf_ext_data) {
@@ -2542,6 +2544,8 @@ static int bpf_object__sanitize_and_load_btf(struct bpf_object *obj)
if (IS_ERR(kern_btf))
return PTR_ERR(kern_btf);
+ /* enforce 8-byte pointers for BPF-targeted BTFs */
+ btf__set_pointer_size(obj->btf, 8);
bpf_object__sanitize_btf(obj, kern_btf);
}