| Message ID | 5503d18966583e55158471ebbb2f67374b11bf5e.1677658777.git.vmalik@redhat.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 7832d06bd9f9080d9ceae388bb81bf33adce3850 |
| Delegated to: | BPF |
| Headers | show |
| Series | libbpf: fix several issues reported by static analysers | expand |
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 9181d36118d2..0a2c079244b6 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -1000,8 +1000,6 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf, } } - err = 0; - if (!btf_data) { pr_warn("failed to find '%s' ELF section in %s\n", BTF_ELF_SEC, path); err = -ENODATA; diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 905193d98885..ba9e7e2b7951 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -798,7 +798,6 @@ bpf_object__add_programs(struct bpf_object *obj, Elf_Data *sec_data, progs = obj->programs; nr_progs = obj->nr_programs; nr_syms = symbols->d_size / sizeof(Elf64_Sym); - sec_off = 0; for (i = 0; i < nr_syms; i++) { sym = elf_sym_by_idx(obj, i); diff --git a/tools/lib/bpf/relo_core.c b/tools/lib/bpf/relo_core.c index c4b0e81ae293..a26b2f5fa0fc 100644 --- a/tools/lib/bpf/relo_core.c +++ b/tools/lib/bpf/relo_core.c @@ -1551,9 +1551,6 @@ int __bpf_core_types_match(const struct btf *local_btf, __u32 local_id, const st if (level <= 0) return -EINVAL; - local_t = btf_type_by_id(local_btf, local_id); - targ_t = btf_type_by_id(targ_btf, targ_id); - recur: depth--; if (depth < 0)
Clang Static Analyzer (scan-build) reports several dead assignments in libbpf where the assigned value is unconditionally overridden by another value before it is read. Remove these assignments. Signed-off-by: Viktor Malik <vmalik@redhat.com> --- tools/lib/bpf/btf.c | 2 -- tools/lib/bpf/libbpf.c | 1 - tools/lib/bpf/relo_core.c | 3 --- 3 files changed, 6 deletions(-)