From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- include/acpi/acpi.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/acpi/acpi.h (limited to 'include/acpi/acpi.h') diff --git a/include/acpi/acpi.h b/include/acpi/acpi.h new file mode 100644 index 000000000..07e3d6e21 --- /dev/null +++ b/include/acpi/acpi.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ +/****************************************************************************** + * + * Name: acpi.h - Master public include file used to interface to ACPICA + * + * Copyright (C) 2000 - 2026, Intel Corp. + * + *****************************************************************************/ + +#ifndef __ACPI_H__ +#define __ACPI_H__ + +/* + * Public include files for use by code that will interface to ACPICA. + * + * Information includes the ACPICA data types, names, exceptions, and + * external interface prototypes. Also included are the definitions for + * all ACPI tables (FADT, MADT, etc.) + * + * Note: The order of these include files is important. + */ +#include /* Environment-specific items */ +#include /* Common ACPI names and strings */ +#include /* ACPICA data types and structures */ +#include /* ACPICA exceptions */ +#include /* ACPI table definitions */ +#include /* Resource Descriptor structs */ +#include /* Extra environment-specific items */ +#include /* Error output and Debug macros */ +#include /* OSL interfaces (ACPICA-to-OS) */ +#include /* ACPI core subsystem external interfaces */ + +#endif /* __ACPI_H__ */ -- cgit v1.3.1