From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- Documentation/admin-guide/abi.rst | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/admin-guide/abi.rst (limited to 'Documentation/admin-guide/abi.rst') diff --git a/Documentation/admin-guide/abi.rst b/Documentation/admin-guide/abi.rst new file mode 100644 index 000000000..c6039359e --- /dev/null +++ b/Documentation/admin-guide/abi.rst @@ -0,0 +1,29 @@ +.. SPDX-License-Identifier: GPL-2.0 + +===================== +Linux ABI description +===================== + +.. kernel-abi:: README + +ABI symbols +----------- + +.. toctree:: + :maxdepth: 2 + + abi-stable + abi-testing + abi-obsolete + abi-removed + +ABI files +--------- + +.. toctree:: + :maxdepth: 2 + + abi-stable-files + abi-testing-files + abi-obsolete-files + abi-removed-files -- cgit v1.3.1