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/gpu/implementation_guidelines.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 Documentation/gpu/implementation_guidelines.rst (limited to 'Documentation/gpu/implementation_guidelines.rst') diff --git a/Documentation/gpu/implementation_guidelines.rst b/Documentation/gpu/implementation_guidelines.rst new file mode 100644 index 000000000..dbccfa72f --- /dev/null +++ b/Documentation/gpu/implementation_guidelines.rst @@ -0,0 +1,10 @@ +.. SPDX-License-Identifier: (GPL-2.0+ OR MIT) + +=========================================================== +Misc DRM driver uAPI- and feature implementation guidelines +=========================================================== + +.. toctree:: + + drm-vm-bind-async + drm-vm-bind-locking -- cgit v1.3.1