diff mbox series

[bpf-next,v2,2/4] bpf: return prog btf_id without capable check

Message ID 20250305194942.123191-3-mykyta.yatsenko5@gmail.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series Support freplace prog from user namespace | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 8 maintainers not CCed: jolsa@kernel.org kpsingh@kernel.org sdf@fomichev.me john.fastabend@gmail.com haoluo@google.com martin.lau@linux.dev song@kernel.org yonghong.song@linux.dev
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 16 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-VM_Test-14 success Logs for s390x-gcc / build / build for s390x with gcc
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bpf/vmtest-bpf-next-VM_Test-34 success Logs for x86_64-llvm-17 / build / build for x86_64 with llvm-17
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bpf/vmtest-bpf-next-VM_Test-28 success Logs for x86_64-gcc / test (test_progs_no_alu32_parallel, true, 30) / test_progs_no_alu32_parallel on x86_64 with gcc
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bpf/vmtest-bpf-next-VM_Test-8 fail Logs for aarch64-gcc / test (test_progs, false, 360) / test_progs on aarch64 with gcc
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bpf/vmtest-bpf-next-PR fail PR summary

Commit Message

Mykyta Yatsenko March 5, 2025, 7:49 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>
---
 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 6975d391bb05..ac8b391fdacb 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);