diff mbox series

[bpf-next,v6,2/4] bpf: return prog btf_id without capable check

Message ID 20250317174039.161275-3-mykyta.yatsenko5@gmail.com (mailing list archive)
State Accepted
Commit 07651ccda9ff10a8ca427670cdd06ce2c8e4269c
Delegated to: BPF
Headers show
Series Support freplace prog from user namespace | expand

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Commit Message

Mykyta Yatsenko March 17, 2025, 5:40 p.m. UTC 
From: Mykyta Yatsenko <yatsenko@meta.com>

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@meta.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
---
 kernel/bpf/syscall.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 419f82c78203..380b445a304c 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -4732,6 +4732,8 @@  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;
@@ -4878,8 +4880,6 @@  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);