[PATCH bpf-next v2 0/2] Allow calling kfuncs from raw_tp programs

[PATCH bpf-next v2 0/2] Allow calling kfuncs from raw_tp programs

[Puranjay Mohan]

V1: https://lore.kernel.org/all/20251218145514.339819-1-puranjay@kernel.org/
Changes in V1->V2:
- Update selftests to allow success for raw_tp programs calling kfuncs.

This set enables calling kfuncs from raw_tp programs.

Puranjay Mohan (2):
  bpf: allow calling kfuncs from raw_tp programs
  selftests: bpf: fix tests with raw_tp calling kfuncs

 kernel/bpf/btf.c                                            | 1 +
 tools/testing/selftests/bpf/progs/dynptr_fail.c             | 2 +-
 .../testing/selftests/bpf/progs/verifier_kfunc_prog_types.c | 6 +++---
 3 files changed, 5 insertions(+), 4 deletions(-)


base-commit: f785a31395d9cafb8b2c42c7358fad72a6463142
-- 
2.47.3

[PATCH bpf-next v2 1/2] bpf: allow calling kfuncs from raw_tp programs

[Puranjay Mohan]

Associate raw tracepoint program type with the kfunc tracing hook. This
allows calling kfuncs from raw_tp programs.

Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
---
 kernel/bpf/btf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 0de8fc8a0e0b..539c9fdea41d 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -8681,6 +8681,7 @@ static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
 		return BTF_KFUNC_HOOK_STRUCT_OPS;
 	case BPF_PROG_TYPE_TRACING:
 	case BPF_PROG_TYPE_TRACEPOINT:
+	case BPF_PROG_TYPE_RAW_TRACEPOINT:
 	case BPF_PROG_TYPE_PERF_EVENT:
 	case BPF_PROG_TYPE_LSM:
 		return BTF_KFUNC_HOOK_TRACING;
-- 
2.47.3

Re: [PATCH bpf-next v2 1/2] bpf: allow calling kfuncs from raw_tp programs

[Yonghong Song]

On 12/22/25 5:32 AM, Puranjay Mohan wrote:
> Associate raw tracepoint program type with the kfunc tracing hook. This
> allows calling kfuncs from raw_tp programs.
>
> Signed-off-by: Puranjay Mohan <puranjay@kernel.org>

Acked-by: Yonghong Song <yonghong.song@linux.dev>

[PATCH bpf-next v2 2/2] selftests: bpf: fix tests with raw_tp calling kfuncs

[Puranjay Mohan]

As the previous commit allowed raw_tp programs to call kfuncs, so of the
selftests that were expected to fail will now succeed.

Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
---
 tools/testing/selftests/bpf/progs/dynptr_fail.c             | 2 +-
 .../testing/selftests/bpf/progs/verifier_kfunc_prog_types.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/dynptr_fail.c b/tools/testing/selftests/bpf/progs/dynptr_fail.c
index dda6a8dada82..8f2ae9640886 100644
--- a/tools/testing/selftests/bpf/progs/dynptr_fail.c
+++ b/tools/testing/selftests/bpf/progs/dynptr_fail.c
@@ -1465,7 +1465,7 @@ int xdp_invalid_data_slice2(struct xdp_md *xdp)
 }
 
 /* Only supported prog type can create skb-type dynptrs */
-SEC("?raw_tp")
+SEC("?xdp")
 __failure __msg("calling kernel function bpf_dynptr_from_skb is not allowed")
 int skb_invalid_ctx(void *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/verifier_kfunc_prog_types.c b/tools/testing/selftests/bpf/progs/verifier_kfunc_prog_types.c
index a509cad97e69..1fce7a7e8d03 100644
--- a/tools/testing/selftests/bpf/progs/verifier_kfunc_prog_types.c
+++ b/tools/testing/selftests/bpf/progs/verifier_kfunc_prog_types.c
@@ -32,7 +32,7 @@ static void task_kfunc_load_test(void)
 }
 
 SEC("raw_tp")
-__failure __msg("calling kernel function")
+__success
 int BPF_PROG(task_kfunc_raw_tp)
 {
 	task_kfunc_load_test();
@@ -86,7 +86,7 @@ static void cgrp_kfunc_load_test(void)
 }
 
 SEC("raw_tp")
-__failure __msg("calling kernel function")
+__success
 int BPF_PROG(cgrp_kfunc_raw_tp)
 {
 	cgrp_kfunc_load_test();
@@ -138,7 +138,7 @@ static void cpumask_kfunc_load_test(void)
 }
 
 SEC("raw_tp")
-__failure __msg("calling kernel function")
+__success
 int BPF_PROG(cpumask_kfunc_raw_tp)
 {
 	cpumask_kfunc_load_test();
-- 
2.47.3

Re: [PATCH bpf-next v2 2/2] selftests: bpf: fix tests with raw_tp calling kfuncs

[Yonghong Song]

On 12/22/25 5:32 AM, Puranjay Mohan wrote:
> As the previous commit allowed raw_tp programs to call kfuncs, so of the
> selftests that were expected to fail will now succeed.
>
> Signed-off-by: Puranjay Mohan <puranjay@kernel.org>

Acked-by: Yonghong Song <yonghong.song@linux.dev>