Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing... | netdev

[RFC PATCH bpf-next v2 00/11] Dynptr cleanup and bugfixes · Amery Hung <hidden> · 2026-03-07
[RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Mykyta Yatsenko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Amery Hung <hidden> · 2026-03-12
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Andrii Nakryiko <hidden> · 2026-03-12
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Alexei Starovoitov <hidden> · 2026-03-13
Re: [RFC PATCH bpf-next v2 01/11] bpf: Set kfunc dynptr arg type flag based on prototype · Eduard Zingerman <eddyz87@gmail.com> · 2026-03-16
[RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr · Mykyta Yatsenko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr · Eduard Zingerman <eddyz87@gmail.com> · 2026-03-16
[RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Mykyta Yatsenko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Mykyta Yatsenko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 03/11] bpf: Unify dynptr handling in the verifier · Eduard Zingerman <eddyz87@gmail.com> · 2026-03-16
[RFC PATCH bpf-next v2 04/11] bpf: Assign reg->id when getting referenced kptr from ctx · Amery Hung <hidden> · 2026-03-07
[RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Alexei Starovoitov <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Alexei Starovoitov <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Amery Hung <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 05/11] bpf: Preserve reg->id of pointer objects after null-check · Eduard Zingerman <eddyz87@gmail.com> · 2026-03-17
[RFC PATCH bpf-next v2 06/11] bpf: Refactor object relationship tracking and fix dynptr UAF bug · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 06/11] bpf: Refactor object relationship tracking and fix dynptr UAF bug · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 06/11] bpf: Refactor object relationship tracking and fix dynptr UAF bug · Amery Hung <hidden> · 2026-03-13
Re: [RFC PATCH bpf-next v2 06/11] bpf: Refactor object relationship tracking and fix dynptr UAF bug · Mykyta Yatsenko <hidden> · 2026-03-12
Re: [RFC PATCH bpf-next v2 06/11] bpf: Refactor object relationship tracking and fix dynptr UAF bug · Amery Hung <hidden> · 2026-03-13
[RFC PATCH bpf-next v2 07/11] bpf: Remove redundant dynptr arg check for helper · Amery Hung <hidden> · 2026-03-07
[RFC PATCH bpf-next v2 08/11] selftests/bpf: Test creating dynptr from dynptr data and slice · Amery Hung <hidden> · 2026-03-07
[RFC PATCH bpf-next v2 09/11] selftests/bpf: Test using dynptr after freeing the underlying object · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 09/11] selftests/bpf: Test using dynptr after freeing the underlying object · Eduard Zingerman <eddyz87@gmail.com> · 2026-03-16
[RFC PATCH bpf-next v2 10/11] selftests/bpf: Test using slice after invalidating dynptr clone · Amery Hung <hidden> · 2026-03-07
[RFC PATCH bpf-next v2 11/11] selftests/bpf: Test using file dynptr after the reference on file is dropped · Amery Hung <hidden> · 2026-03-07
Re: [RFC PATCH bpf-next v2 00/11] Dynptr cleanup and bugfixes · Andrii Nakryiko <hidden> · 2026-03-11
Re: [RFC PATCH bpf-next v2 00/11] Dynptr cleanup and bugfixes · Amery Hung <hidden> · 2026-03-13

Re: [RFC PATCH bpf-next v2 02/11] selftests/bpf: Test passing CONST_PTR_TO_DYNPTR to kfunc that may mutate dynptr

From: Eduard Zingerman <eddyz87@gmail.com>
Date: 2026-03-16 21:35:49
Also in: bpf

On Fri, 2026-03-06 at 22:44 -0800, Amery Hung wrote:

Make sure for kfunc that takes mutable dynptr argument, verifier rejects
passing CONST_PTR_TO_DYNPTR to it.

Rename struct sample to test_sample to avoid a conflict with the
definition in vmlinux.h

In test_kfunc_dynptr_param.c, initialize dynptr to 0 to avoid
-Wuninitialized-const-pointer warning.

Signed-off-by: Amery Hung <redacted>
---

Acked-by: Eduard Zingerman <eddyz87@gmail.com>

[...]

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