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/driver-api/coco/index.rst | 10 ++++++++++ Documentation/driver-api/coco/measurement-registers.rst | 12 ++++++++++++ 2 files changed, 22 insertions(+) create mode 100644 Documentation/driver-api/coco/index.rst create mode 100644 Documentation/driver-api/coco/measurement-registers.rst (limited to 'Documentation/driver-api/coco') diff --git a/Documentation/driver-api/coco/index.rst b/Documentation/driver-api/coco/index.rst new file mode 100644 index 000000000..783c8b033 --- /dev/null +++ b/Documentation/driver-api/coco/index.rst @@ -0,0 +1,10 @@ +.. SPDX-License-Identifier: GPL-2.0 + +====================== +Confidential Computing +====================== + +.. toctree:: + :maxdepth: 1 + + measurement-registers diff --git a/Documentation/driver-api/coco/measurement-registers.rst b/Documentation/driver-api/coco/measurement-registers.rst new file mode 100644 index 000000000..962a44efa --- /dev/null +++ b/Documentation/driver-api/coco/measurement-registers.rst @@ -0,0 +1,12 @@ +.. SPDX-License-Identifier: GPL-2.0 +.. include:: + +===================== +Measurement Registers +===================== + +.. kernel-doc:: include/linux/tsm-mr.h + :internal: + +.. kernel-doc:: drivers/virt/coco/guest/tsm-mr.c + :export: -- cgit v1.3.1