diff options
| -rw-r--r-- | tools/bpf/bpftool/prog.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index e47e8b06cc3d..45ccc254e69f 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -1774,17 +1774,19 @@ static int try_loader(struct gen_loader_opts *gen) sizeof(struct bpf_prog_desc)); int log_buf_sz = (1u << 24) - 1; int err, fds_before, fd_delta; - char *log_buf; + char *log_buf = NULL; ctx = alloca(ctx_sz); memset(ctx, 0, ctx_sz); ctx->sz = ctx_sz; - ctx->log_level = 1; - ctx->log_size = log_buf_sz; - log_buf = malloc(log_buf_sz); - if (!log_buf) - return -ENOMEM; - ctx->log_buf = (long) log_buf; + if (verifier_logs) { + ctx->log_level = 1 + 2 + 4; + ctx->log_size = log_buf_sz; + log_buf = malloc(log_buf_sz); + if (!log_buf) + return -ENOMEM; + ctx->log_buf = (long) log_buf; + } opts.ctx = ctx; opts.data = gen->data; opts.data_sz = gen->data_sz; @@ -1793,9 +1795,9 @@ static int try_loader(struct gen_loader_opts *gen) fds_before = count_open_fds(); err = bpf_load_and_run(&opts); fd_delta = count_open_fds() - fds_before; - if (err < 0) { + if (err < 0 || verifier_logs) { fprintf(stderr, "err %d\n%s\n%s", err, opts.errstr, log_buf); - if (fd_delta) + if (fd_delta && err < 0) fprintf(stderr, "loader prog leaked %d FDs\n", fd_delta); } |