diff options
| author | Daniel T. Lee <danieltimlee@gmail.com> | 2020-08-06 01:33:59 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-08-07 02:47:00 +0300 |
| commit | 932ac54a3e59335a847f7682b5124a788ab3c798 (patch) | |
| tree | 6e3d312032e3716fed044334c235458d93d79bab /tools/lib | |
| parent | 0ac10dc1888cd1a8b994f32b51f0eaeba1e803ef (diff) | |
| download | linux-932ac54a3e59335a847f7682b5124a788ab3c798.tar.xz | |
libbf: Fix uninitialized pointer at btf__parse_raw()
Recently, from commit 94a1fedd63ed ("libbpf: Add btf__parse_raw() and
generic btf__parse() APIs"), new API has been added to libbpf that
allows to parse BTF from raw data file (btf__parse_raw()).
The commit derives build failure of samples/bpf due to improper access
of uninitialized pointer at btf_parse_raw().
btf.c: In function btf__parse_raw:
btf.c:625:28: error: btf may be used uninitialized in this function
625 | return err ? ERR_PTR(err) : btf;
| ~~~~~~~~~~~~~~~~~~~^~~~~
This commit fixes the build failure of samples/bpf by adding code of
initializing btf pointer as NULL.
Fixes: 94a1fedd63ed ("libbpf: Add btf__parse_raw() and generic btf__parse() APIs")
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805223359.32109-1-danieltimlee@gmail.com
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/btf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 856b09a04563..4843e44916f7 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -564,8 +564,8 @@ done: struct btf *btf__parse_raw(const char *path) { + struct btf *btf = NULL; void *data = NULL; - struct btf *btf; FILE *f = NULL; __u16 magic; int err = 0; |