From: Mykyta Yatsenko <yatsenko@xxxxxxxx>
Return prog's btf_id from bpf_prog_get_info_by_fd regardless of capable
check. This patch enables scenario, when freplace program, running
from user namespace, requires to query target prog's btf.
Signed-off-by: Mykyta Yatsenko <yatsenko@xxxxxxxx>
Acked-by: Yonghong Song <yonghong.song@xxxxxxxxx>
---
kernel/bpf/syscall.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 188f7296cf9f..c51193ced383 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -4749,6 +4749,8 @@ static int bpf_prog_get_info_by_fd(struct file *file,
info.recursion_misses = stats.misses;
info.verified_insns = prog->aux->verified_insns;
+ if (prog->aux->btf)
+ info.btf_id = btf_obj_id(prog->aux->btf);
if (!bpf_capable()) {
info.jited_prog_len = 0;
@@ -4895,8 +4897,6 @@ static int bpf_prog_get_info_by_fd(struct file *file,
}
}
- if (prog->aux->btf)
- info.btf_id = btf_obj_id(prog->aux->btf);
info.attach_btf_id = prog->aux->attach_btf_id;
if (attach_btf)
info.attach_btf_obj_id = btf_obj_id(attach_btf);
--
2.48.1
