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 --- drivers/pinctrl/tegra/Kconfig | 67 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 drivers/pinctrl/tegra/Kconfig (limited to 'drivers/pinctrl/tegra/Kconfig') diff --git a/drivers/pinctrl/tegra/Kconfig b/drivers/pinctrl/tegra/Kconfig new file mode 100644 index 000000000..39a93733e --- /dev/null +++ b/drivers/pinctrl/tegra/Kconfig @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: GPL-2.0-only +config PINCTRL_TEGRA + bool "NVIDIA Tegra pin controllers common" if COMPILE_TEST && !ARCH_TEGRA + select PINMUX + select PINCONF + +config PINCTRL_TEGRA20 + bool "NVIDIA Tegra20 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + depends on COMMON_CLK + +config PINCTRL_TEGRA30 + bool "NVIDIA Tegra30 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA114 + bool "NVIDIA Tegra114 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA124 + bool "NVIDIA Tegra124 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA210 + bool "NVIDIA Tegra210 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA186 + bool "NVIDIA Tegra186 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA194 + bool "NVIDIA Tegra194 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA234 + bool "NVIDIA Tegra234 pin controller" if COMPILE_TEST && !ARCH_TEGRA + select PINCTRL_TEGRA + +config PINCTRL_TEGRA238 + tristate "NVIDIA Tegra238 pinctrl driver" + depends on ARCH_TEGRA || COMPILE_TEST + default m if ARCH_TEGRA_238_SOC + select PINCTRL_TEGRA + help + Say Y or M here to enable support for the pinctrl driver for + NVIDIA Tegra238 SoC. This driver controls the pin multiplexing + and configuration for the MAIN and AON pin controllers found + on Tegra238. + +config PINCTRL_TEGRA264 + tristate "NVIDIA Tegra264 pinctrl driver" + depends on ARCH_TEGRA || COMPILE_TEST + default m if ARCH_TEGRA_264_SOC + select PINCTRL_TEGRA + help + Say Y or M here to enable support for the pinctrl driver for + NVIDIA Tegra264 SoC. This driver controls the pin multiplexing + and configuration for the MAIN, AON and UPHY pin controllers found + on Tegra264. + +config PINCTRL_TEGRA_XUSB + bool "NVIDIA Tegra XUSB pin controller" if COMPILE_TEST && !ARCH_TEGRA + default y if ARCH_TEGRA + select GENERIC_PHY + select PINCONF + select PINMUX -- cgit v1.3.1