From: Alexei Starovoitov <ast@kernel.org>
Date: Wed, 1 Dec 2021 10:10:34 -0800
Subject: libbpf: Clean gen_loader's attach kind.
Patch-mainline: v5.17-rc1
Git-commit: 19250f5fc0c283892a61f3abf9d65e6325f63897
References: jsc#PED-1368

The gen_loader has to clear attach_kind otherwise the programs
without attach_btf_id will fail load if they follow programs
with attach_btf_id.

Fixes: 67234743736a ("libbpf: Generate loader program out of BPF ELF file.")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211201181040.23337-12-alexei.starovoitov@gmail.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
 tools/lib/bpf/gen_loader.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/tools/lib/bpf/gen_loader.c
+++ b/tools/lib/bpf/gen_loader.c
@@ -1018,9 +1018,11 @@ void bpf_gen__prog_load(struct bpf_gen *
 	debug_ret(gen, "prog_load %s insn_cnt %d", attr.prog_name, attr.insn_cnt);
 	/* successful or not, close btf module FDs used in extern ksyms and attach_btf_obj_fd */
 	cleanup_relos(gen, insns_off);
-	if (gen->attach_kind)
+	if (gen->attach_kind) {
 		emit_sys_close_blob(gen,
 				    attr_field(prog_load_attr, attach_btf_obj_fd));
+		gen->attach_kind = 0;
+	}
 	emit_check_err(gen);
 	/* remember prog_fd in the stack, if successful */
 	emit(gen, BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_7,