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bpftool: Fix -Wuninitialized-const-pointer warnings with clang >= 21

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This fixes the build with -Werror -Wall.

btf_dumper.c:71:31: error: variable 'finfo' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer]
   71 |         info.func_info = ptr_to_u64(&finfo);
      |                                      ^~~~~

prog.c:2294:31: error: variable 'func_info' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer]
 2294 |         info.func_info = ptr_to_u64(&func_info);
      |

v2:
  - Initialize instead of using memset.

Signed-off-by: Tom Stellard <tstellar@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Quentin Monnet <qmo@kernel.org>
Link: https://lore.kernel.org/bpf/20250917183847.318163-1-tstellar@redhat.com
This commit is contained in:
Tom Stellard
2025-09-19 15:42:42 -07:00
committed by Andrii Nakryiko
parent 57cb269501
commit 5612ea8b55
2 changed files with 2 additions and 2 deletions
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tools/bpf/bpftool/btf_dumper.c
+1 -1
View File
@@ -38,7 +38,7 @@ static int dump_prog_id_as_func_ptr(const struct btf_dumper *d,
__u32 info_len = sizeof(info);
const char *prog_name = NULL;
struct btf *prog_btf = NULL;
struct bpf_func_info finfo;
struct bpf_func_info finfo = {};
__u32 finfo_rec_size;
char prog_str[1024];
int err;
tools/bpf/bpftool/prog.c
+1 -1
View File
@@ -2262,7 +2262,7 @@ static void profile_print_readings(void)
static char *profile_target_name(int tgt_fd)
{
struct bpf_func_info func_info;
struct bpf_func_info func_info = {};
struct bpf_prog_info info = {};
__u32 info_len = sizeof(info);
const struct btf_type *t;